Correlation of serum Klotho, fetuin-A, and MGP levels with coronary artery calcification in maintenance hemodialysis patients

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For MELD < 15, no area under the curve for consideration." ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Augusto Mantovani, Larisse Longo, Rutiane Ullmann Thoen, Pabulo Henrique Rampelotto, Raul Salinas, Gabriel Tayguara Silveira Guerreiro, Mário Reis Álvares-da-Silva" "autores" => array:7 [ 0 => array:2 [ "nombre" => "Augusto" "apellidos" => "Mantovani" ] 1 => array:2 [ "nombre" => "Larisse" "apellidos" => "Longo" ] 2 => array:2 [ "nombre" => "Rutiane Ullmann" "apellidos" => "Thoen" ] 3 => array:2 [ "nombre" => "Pabulo Henrique" "apellidos" => "Rampelotto" ] 4 => array:2 [ "nombre" => "Raul" "apellidos" => "Salinas" ] 5 => array:2 [ "nombre" => "Gabriel Tayguara Silveira" "apellidos" => "Guerreiro" ] 6 => array:2 [ "nombre" => "Mário Reis" "apellidos" => "Álvares-da-Silva" ] ] ] ] "resumen" => array:1 [ 0 => array:3 [ "titulo" => "Highlights" "clase" => "author-highlights" "resumen" => "<ul class="elsevierStyleList" id="celist0001"><li class="elsevierStyleListItem" id="celistitem0001">•Gut Microbiota (GM) has an important role in liver diseases progression.</li><li class="elsevierStyleListItem" id="celistitem0002">•Notable differences in GM and diversity exist between healthy individuals and cirrhosis patients.</li><li class="elsevierStyleListItem" id="celistitem0003">•Changes in GM are associated with an increased risk of mortality within 90 days.</li><li class="elsevierStyleListItem" id="celistitem0004">•Firmicutes/Bacteroidetes and Firmicutes/Proteobacteria predict hepatic decompensation and mortality.</li></ul>" ] ] ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S1807593224001480?idApp=UINPBA00004N" "url" => "/18075932/000000790000000C/v123_202411010523/S1807593224001480/v123_202411010523/en/main.assets" ] "itemAnterior" => array:17 [ "pii" => "S1807593224001352" "issn" => "18075932" "doi" => "10.1016/j.clinsp.2024.100458" "estado" => "S250" "fechaPublicacion" => "2024-01-01" "aid" => "100458" "copyright" => "HCFMUSP" "documento" => "article" "crossmark" => 1 "subdocumento" => "fla" "abierto" => array:3 [ "ES" => false "ES2" => false "LATM" => false ] "gratuito" => false "lecturas" => array:1 [ "total" => 0 ] "en" => array:12 [ "idiomaDefecto" => true "cabecera" => "Original articles" "titulo" => "Oxycodone enhances antitumor effect of paclitaxel on human breast cancer SKBR3 cells in vitro" "tienePdf" => "en" "tieneTextoCompleto" => "en" "tieneResumen" => array:2 [ 0 => "en" 1 => "en" ] "contieneResumen" => array:1 [ "en" => true ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:8 [ "identificador" => "fig0003" "etiqueta" => "Figure 3" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr3.jpeg" "Alto" => 2211 "Ancho" => 3500 "Tamanyo" => 653583 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "alt0003" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "OXY enhanced PTX-induced apoptosis in SKBR3 cells. (A) Cells were treated with OXY (0.25, 0.5, 1 mM) for 48h, and with OXY plus PTX (8 μM) for 24h. Apoptotic cells were detected after Annexin V and PI double staining. The apoptotic rate was calculated. * p < 0.05 vs. group C and P. (B) The expression of apoptosis-related proteins (Bcl-2 and Bax) was detected by Western blotting. * p < 0.05 vs. group C and P. # p < 0.05, O 0.25 group and O 1 group vs. O 0.5 group, P+ O 0.25 group and P+ O 1 group vs. P+ O 0.25 group. At least three independent experiments in each group. Abbreviation: P, Paclitaxel; C, Control; O, Oxycodone." ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Fangfang Liu, Hongmei Yuan, Chenyang Xu, Mingjie Mao, Shanwu Feng" "autores" => array:5 [ 0 => array:2 [ "nombre" => "Fangfang" "apellidos" => "Liu" ] 1 => array:2 [ "nombre" => "Hongmei" "apellidos" => "Yuan" ] 2 => array:2 [ "nombre" => "Chenyang" "apellidos" => "Xu" ] 3 => array:2 [ "nombre" => "Mingjie" "apellidos" => "Mao" ] 4 => array:2 [ "nombre" => "Shanwu" "apellidos" => "Feng" ] ] ] ] "resumen" => array:1 [ 0 => array:3 [ "titulo" => "Highlights" "clase" => "author-highlights" "resumen" => "<ul class="elsevierStyleList" id="celist0001"><li class="elsevierStyleListItem" id="celistitem0001">•Oxycodone markedly induced the apoptosis of SKBR3 cells.</li><li class="elsevierStyleListItem" id="celistitem0002">•Oxycodone distinguished enhanced antitumor effect of PTX on SKBR3 cells.</li><li class="elsevierStyleListItem" id="celistitem0003">•OXY can enhance antitumor effect of PTX on breast cancer in vitro.</li></ul>" ] ] ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S1807593224001352?idApp=UINPBA00004N" "url" => "/18075932/000000790000000C/v123_202411010523/S1807593224001352/v123_202411010523/en/main.assets" ] "en" => array:20 [ "idiomaDefecto" => true "cabecera" => "Original articles" "titulo" => "Correlation of serum Klotho, fetuin-A, and MGP levels with coronary artery calcification in maintenance hemodialysis patients" "tieneTextoCompleto" => true "autores" => array:1 [ 0 => array:4 [ "autoresLista" => "Dan Wang, XiuLin Chu, JuHua Cao, YunHua Peng" "autores" => array:4 [ 0 => array:3 [ "nombre" => "Dan" "apellidos" => "Wang" "referencia" => array:2 [ 0 => array:2 [ "etiqueta" => "a" "identificador" => "aff0001" ] 1 => array:2 [ "etiqueta" => "1" "identificador" => "fn1" ] ] ] 1 => array:3 [ "nombre" => "XiuLin" "apellidos" => "Chu" "referencia" => array:2 [ 0 => array:2 [ "etiqueta" => "b" "identificador" => "aff0002" ] 1 => array:2 [ "etiqueta" => "1" "identificador" => "fn1" ] ] ] 2 => array:3 [ "nombre" => "JuHua" "apellidos" => "Cao" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "c" "identificador" => "aff0003" ] ] ] 3 => array:4 [ "nombre" => "YunHua" "apellidos" => "Peng" "email" => array:1 [ 0 => "wanglei_1346_gphc@hotmail.com" ] "referencia" => array:2 [ 0 => array:2 [ "etiqueta" => "d" "identificador" => "aff0004" ] 1 => array:2 [ "etiqueta" => "*" "identificador" => "cor0001" ] ] ] ] "afiliaciones" => array:4 [ 0 => array:3 [ "entidad" => "Department of East Hospital Nephrology, Yantaishan Hospital, Yantai City, Shandong Province, China" "etiqueta" => "a" "identificador" => "aff0001" ] 1 => array:3 [ "entidad" => "Department of Nephrology, The People's Hospital of Xushui, Baoding City, Hebei Province, China" "etiqueta" => "b" "identificador" => "aff0002" ] 2 => array:3 [ "entidad" => "Department of Outpatient, The General Hospital of Western Theater Command of Chinese people's liberation army, Chengdu City, Sichuan Province, China" "etiqueta" => "c" "identificador" => "aff0003" ] 3 => array:3 [ "entidad" => "Department of Nephrology, Dafeng People's Hospital, Yancheng City, JiangSu Province, China" "etiqueta" => "d" "identificador" => "aff0004" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0001" "etiqueta" => "⁎" "correspondencia" => "Corresponding author." ] ] ] ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:8 [ "identificador" => "fig0001" "etiqueta" => "Fig. 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 959 "Ancho" => 2167 "Tamanyo" => 111596 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "alt0001" "detalle" => "Fig " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "Klotho, fetuin-A, and MGP proteins in three defined groups of CAC scores. (A‒B) Protein expressions of Klotho, fetuin-A, and MGP in three defined groups of CAC scores were detected by Western blot." ] ] ] "textoCompleto" => "IntroductionChronic Kidney Disease (CKD) is a growing health problem worldwide, affecting approximately 10%‒16% of the adult population worldwide.<a class="elsevierStyleCrossRef" href="#bib0001">1</a> The prevalence of CKD in China has reached 10.8%,<a class="elsevierStyleCrossRef" href="#bib0002">2</a> and the number of Maintenance Hemodialysis (MHD) patients is also gradually increasing. MHD patients are more likely to have vascular calcifications<a class="elsevierStyleCrossRef" href="#bib0003">3</a> and Coronary Artery Calcification (CAC).<a class="elsevierStyleCrossRefs" href="#bib0004">4-6</a> In light of this, evaluating and preventing CAC is becoming increasingly important.CAC is not a simple precipitation of calcium and phosphorus, but an active and constantly changing process,<a class="elsevierStyleCrossRef" href="#bib0007">7</a> which is currently thought to be the deposition of an organized extracellular matrix caused by osteoblast-like cells. It is formed when Vascular Smooth Muscle Cells (VSMCs) undergo transdifferentiation as a result of factors such as hyperphosphatemia. VSMCs produce a matrix composed of collagen and non-collagen proteins. If pro-mineralization factors exceed inhibitory factors, the lesion will be mineralized,<a class="elsevierStyleCrossRef" href="#bib0008">8</a> and the imbalance between pro-mineralization factors (hyperphosphatemia, inflammation) and the inhibitory factors (fetuin-A and others) ultimately leads to vascular calcification even in early CKD.An aging suppressor gene named Klotho was first reported in 1997.<a class="elsevierStyleCrossRef" href="#bib0009">9</a> As an FGF-23 co-receptor, Klotho is primarily expressed in the choroid plexus, distal convoluted tubules, and parathyroid glands.<a class="elsevierStyleCrossRef" href="#bib0010">10</a>,<a class="elsevierStyleCrossRef" href="#bib0011">11</a> Various aging-related disorders have been linked to Klotho, including organ atrophy, premature atherosclerosis, calcified vascular and soft tissues, and cancer.<a class="elsevierStyleCrossRef" href="#bib0012">12</a>The 62-kilodalton glycoprotein, feluin-A, is a cystatin-family member. As secreted from the liver, the 349-amino acid protein consists of a heavy and light chain that is joined and linked.<a class="elsevierStyleCrossRef" href="#bib0013">13</a> Two cystatin domains exist at the N-terminus of the heavy chain, D1 and D2. Acidic amino acids in the D1 domain are believed to be responsible for the ability of fetuin to inhibit calcium and phosphorus precipitation.<a class="elsevierStyleCrossRef" href="#bib0013">13</a> It is mainly due to fetuin-A that serum prevents calcium and phosphorus precipitation in vitro. Currently, fetuin-A is recognized as an active regulator of osteogenesis within the vessels. Fetuin-A binds to annexin II and I on cell surfaces in the presence of calcium.<a class="elsevierStyleCrossRef" href="#bib0014">14</a> As a result of this binding, fetuin-A can enter the endosomes within VSMCs.<a class="elsevierStyleCrossRef" href="#bib0015">15</a> Fetuin-A inhibits VMSC apoptosis intracellularly.<a class="elsevierStyleCrossRef" href="#bib0016">16</a> Furthermore, it inhibits mineralization and suppresses calcium phosphate nucleation.<a class="elsevierStyleCrossRef" href="#bib0016">16</a> In addition, fetuin-A inhibits bone morphogenetic protein-2, a key osteogenic protein that triggers the transdifferentiation of calcifying vascular cells.<a class="elsevierStyleCrossRef" href="#bib0013">13</a>A vascular calcification inhibitor, Matrix Gla Protein (MGP), depends on vitamin K for its activation. A higher plasma level of desphospho-uncarboxylated MGP (indicative of poor vascular vitamin K status) is linked with an increased cardiovascular risk.<a class="elsevierStyleCrossRef" href="#bib0017">17</a> MGP levels have been demonstrated to be high in Maintenance Hemodialysis (MHD) patients.<a class="elsevierStyleCrossRef" href="#bib0018">18</a>However, the effects of serum Klotho, fetuin-A, and MGP levels on CAC and the predictive value of these biomarkers in MHD patients are unclear. This study investigated Klotho, fetuin-A, and MGP in CAC in MHD patients.Materials and methodsResearch objects100 patients receiving MHD in Yantaishan Hospital were selected. MHD was performed with bicarbonate dialysate containing 1.5 mmoL/L Ca2+ on a polysulfone membrane dialyzer. Blood flow was 200‒250 mL/min, dialysate flow rate was 500 mL/min, and dialysate temperature was 37°C. The anticoagulant treatment was conventional heparin or low molecular-weight heparin. MHD was generally performed 4‒5h per time, 2‒3 times a week. An autologous arteriovenous fistula was established as vascular access. Patients with hypoproteinemia, active hectic diseases, hepatobiliary disease, severe infection, gastrointestinal bleeding, retinal bleeding, or other active bleeding conditions were excluded. Patients were divided into 3 groups according to CAC scores (0‒100, 100‒400, and > 400). Basic clinical data were recorded. This study was an observational clinical study following the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) guidelines.Biochemical analysisFasting venous blood was collected to detect hemoglobin, Albumin (Alb), blood calcium, and blood phosphorus levels. Totalcalcium(mgdL)=totalcalcium+0.8×[4−Alb(mgdL)]. The corrected total calcium is used to calculate the calcium-phosphorus product. Dialysis adequacy was evaluated by calculating the ratio of urea clearance to Volume (Kt/V).Serum Klotho, fetuin-A, and MGP levelsFasting venous blood was centrifuged and cryopreserved for follow-up testing. Serum Klotho, fetuin-A and MGP levels were detected by ELISA, and then the correlation between serum Klotho, fetuin-A and MGP levels and CAC in MHD patients was analyzed. Specifically, serum Klotho levels were detected using an ELISA kit (IBL-International, Japan). Klotho in all samples exceeded the detection limit of 6 pg/mL. Intra-assay and inter-assay variations were 3.6% and 3.2% for the Klotho standard and 2.8% and 3.6% for the human sample, respectively. Serum fetuin-A levels were detected using an ELISA kit (Bio-Swamp, USA). The mean intra-assay and inter-assay variations were 5.6% and 6.2%, respectively. The reference range for healthy adults is 0.5‒1.0 g/L, with a minimum sensitivity of 2.5 ng/mL. Serum MGP levels were detected using an ELISA kit (Bio-Swamp). Intra-assay and inter-assay variations were 5.4% and 7.2%, respectively. The lower limit is 5 pg/mL.Isolation of peripheral blood mononuclear cells (PBMCs)Venous blood (1.5 mL) was diluted with phosphate buffer at 1:1 and transferred into a centrifuge tube containing 3 mL Ficoll Paque (GE Healthcare, Uppsala, Sweden). PBMCs were collected after centrifugation at 400× g at room temperature for 20 min and rinsed twice in 10 mL PBS. PBMCs were re-suspended in a lysis buffer for protein extraction.Western blotThe protein expression levels of Klotho, fetuin-A and MGP in PBMCs of MHD patients were detected by Western blot, which in turn increased the reliability of the results of serum Klotho, fetuin-A and MGP levels. The cell lysate was prepared, and the protein concentration was detected by the BCA protein detection reagent. Protein (10‒30 μg) was electrophoresed on an 8% or 12% SDS-polyacrylamide gel, transferred to a PVDF membrane, and sealed at room temperature for 2h in 5% skim milk containing PBST. Subsequently, the membrane was incubated with the primary antibody at 4°C overnight and then re-detected with HRP-bound secondary antibody (1:3000) for 2h. Protein expression was finally shown using the ECL kit.CAC scoreCT scans were performed using 64-slice spiral technology (Lightspeed VCT, USA). Continuous images were acquired by plain axial scan combined with retrospective electrocardio gram gating during diastole of the cardiac cycle from the carina to the apex. At 60%‒80% R-R interval, the images were obtained during a single breath-hold. Plain 3.0-mm images were reconstructed at a 40% R-R interval in the diastolic phase. CAC scores were calculated using SmartScore software (GE Healthcare, USA). Attenuation values over 130 hounsfield units were considered to be the cut-off point for calcification lesions. Areas greater than 0.5 mm2 were considered calcified. Left main, Left Anterior Descending (LAD), Left Circumflex (LCX), and right coronary artery were marked for calcification. LAD calcification refers to the calcification of diagonal branches, while LCX calcification refers to obtuse marginal branches. Total CAC scores were calculated automatically. CT scan (512×512 matrix; 25‒28 cm filed of view): peak voltage at 120 KV, tube current at 450 mA, collimator width of 1.5 mm, pitch of 0.24, scanning time for 5‒8s, gantry rotation time for 0.35s, slice thickness of 2.5 mm, and reconstruction interval of 2.5 mm.Carotid intima-media thickness (IMT) measurementCommon Carotid Artery (CCA) was examined from both longitudinal and transverse angles using a color Doppler ultrasound system (LOGIC 9, General Electric). During the left ventricular diastolic period, CCA images at 1.5‒2 cm below the carotid sinus were obtained. Measurements were repeated for 3 cardiac cycles on each side. There are two parallel bright lines in the posterior wall of CCA, and the echo intensity was relatively low. IMT was calculated based on the vertical distance between the two lines, which is the average of six carotid artery measurements. It was the same sonographer who performed each scan.Statistical analysisAnalyses were performed with SPSS 16.0 software. Two-sided tests were used for all statistical inferences; p < 0.05 was considered statistically significant. If the data fit the homogeneity of variance and the normal distribution, the comparison was done with an independent sample t-test; if not, the Wilcoxon rank sum test was used. One-way analysis of variance was used for comparison among groups, and the least significant difference method was for that between two means. Variance heterogeneity data were assessed by the Wilcoxon rank sum test. Continuous variables were analyzed by Principal Component Analysis (PCA), and categorical variables were analyzed by Multiple Correspondence Analysis (MCA) to build a random forest model to assess the importance of each variable. Then, multiple stepwise regression analysis was performed with CAC score as the dependent variable and gender (female = 0, male = 1), age, BMI, dialysis vintage, Kt/V, IMT, blood calcium level, blood phosphorus level, calcium-phosphorus product, iPTH, Klotho, fetuin-A, and MGP as independent variables. Partial regression coefficient and 95% CI were calculated. The Receiver Operating Characteristic (ROC) curve was plotted and Area Under the Curve (AUC) was analyzed.ResultsPatient baseline characteristicsAmong the 100 patients, 46 (46.00%) were males and 54 (54.00%) were females. The mean age was 60.40±11.50 years, and the mean dialysis vintage was 6.79±2.85 years. The top 3 underlying diseases were chronic glomerulonephritis (26 cases, 26.00%), diabetes (18 cases, 18.00%), and hypertensive nephropathy (14 cases, 14.00%) (<a class="elsevierStyleCrossRef" href="#tbl0001">Table 1</a>).<elsevierMultimedia ident="tbl0001"></elsevierMultimedia>CAC scores<a class="elsevierStyleCrossRef" href="#tbl0002">Table 2</a> summarizes the characteristics of patients in the three defined groups of CAC scores 0‒100, 100‒400, and > 400. There were significant differences in BMI, dialysis vintage, Kt/V, IMT, blood phosphorus, calcium-phosphorus product, Klotho, fetuin-A, and MGP. With the increase of CAC score, MHD patients had increased dialysis vintage, higher BMI, IMT, blood phosphorus levels, calcium-phosphorus product, and lower Kt/V. The serum levels of Klotho, fetuin-A and MGP in MHD patients were measured by ELISA. With the increase in CAC score, serum MGP showed an increasing trend, and serum Klotho and fetuin-A showed a decreasing trend.<elsevierMultimedia ident="tbl0002"></elsevierMultimedia>Klotho, fetuin-A, and MGP proteins in three defined groups of CAC scoresKlotho, fetuin-A, and MGP protein expression levels in PBMCs of MHD patients in different CAC score groups were detected by Western blot. With the increase of CAC score, Klotho and fetuin-A proteins gradually decreased, while MGP proteins gradually increased (<a class="elsevierStyleCrossRef" href="#fig0001">Fig. 1</a> A‒B).<elsevierMultimedia ident="fig0001"></elsevierMultimedia>Analysis of influencing factors of CAC in MHD patientsMultiple stepwise regression analysis with CAC score as the dependent variable and gender (female = 0, male = 1), age, BMI, dialysis vintage, Kt/V, IMT, blood calcium level, blood phosphorus level, calcium-phosphorus product, iPTH, Klotho, fetuin-A, and MGP as independent variables showed that after controlling gender and age, dialysis vintage, blood phosphorus, serum Klotho, fetuin-A, and MGP were independent risk factors for CAC in MHD patients (<a class="elsevierStyleCrossRef" href="#tbl0003">Table 3</a>).<elsevierMultimedia ident="tbl0003"></elsevierMultimedia>Diagnostic value of serum Klotho, fetuin-A, and MGP for CAC in patients with MHDROC curves were drawn to analyze the value of serum Klotho, fetuin-A, and MGP levels in predicting CAC in MHD patients. The AUC of serum Klotho, fetuin-A, and MGP was 0.777, 0.744, and 0.815, respectively (<a class="elsevierStyleCrossRef" href="#fig0002">Fig. 2</a> A‒C).<elsevierMultimedia ident="fig0002"></elsevierMultimedia>DiscussionVascular calcification is common in patients with MHD. Data showed that 27% of patients receiving dialysis for 1 year found vascular calcification, and the incidence increased to 83% of patients receiving dialysis for more than 8 years.<a class="elsevierStyleCrossRef" href="#bib0019">19</a>,<a class="elsevierStyleCrossRef" href="#bib0020">20</a> One hundred MHD patients with dialysis vintage of 6.79 ± 2.85 years were included in this study, of which 20 (20.00%), 25 (25.00%) and 55 (55.00%) had CAC scores of 0‒100, 100‒400 and > 400, respectively.MHD patients often have renal phosphorus metabolism disorder, and intake of phosphorus-rich foods results in phosphorus retention and stimulate iPTH secretion. Calcium and phosphorus can be released from bones into the extracellular space due to excess iPTH, aggravating hyperphosphatemia, which is associated with vascular calcification. Hyperphosphatemia, calcium-phosphorus accumulation, and high calcium intake are associated with CAC.<a class="elsevierStyleCrossRef" href="#bib0003">3</a> Vascular calcification can be alleviated by applying sevelamer hydrochloride actively to correct hyperphosphatemia.<a class="elsevierStyleCrossRef" href="#bib0021">21</a> It has been indicated that inorganic phosphorus not only induces the transformation of VSMCs to osteoblast-like cells but stimulates osteoblast proliferation.<a class="elsevierStyleCrossRef" href="#bib0022">22</a> It would seem that hyperphosphatemia may cause vascular walls to thicken, resulting in vascular calcification in patients with MHD. MHD and serum calcium and phosphorus levels are independent risk factors for CAC.<a class="elsevierStyleCrossRef" href="#bib0023">23</a> For every 0.322 mmoL/L increase in blood phosphorus levels, the risk of developing CAC is comparable to that of 2.5 years of hemodialysis. According to a systematic review, dialysis duration and age are the most significant risk factors for CAC.<a class="elsevierStyleCrossRef" href="#bib0024">24</a> In this study, the authors found that dialysis vintage and blood phosphorus levels were risk factors for the development of CAC.The renal protective mechanism of Klotho against CKD has been reported previously. Klotho gene manipulation can improve renal function in mice with progressive kidney injury.<a class="elsevierStyleCrossRef" href="#bib0025">25</a> Renal fibrosis is associated with Klotho deficiency, and Klotho treatment could prevent fibrotic kidney changes in mice.<a class="elsevierStyleCrossRef" href="#bib0026">26</a> Klotho deletion results in increased renal inflammation through RelA (Serine)536 phosphorylation.<a class="elsevierStyleCrossRef" href="#bib0027">27</a> In addition, Klotho can improve vascular calcification.<a class="elsevierStyleCrossRef" href="#bib0028">28</a> In this study, serum fetuin-A levels were inversely associated with the severity of CAC. In addition, Klotho protein expression in PBMCs from MHD patients gradually decreased with increasing CAC score.During arterial calcification, fetuin-A acts as a calcification inhibitor. It has been reported that serum fetuin-A level is negatively associated with CAC in 30 MHD patients.<a class="elsevierStyleCrossRef" href="#bib0029">29</a> Moreover, serum fetuin-A levels are reduced in patients with calcification scores > 5, and serum fetuin-A < 0.29 g/L is associated with the risk of cardiovascular calcification progression.<a class="elsevierStyleCrossRef" href="#bib0030">30</a> Moreover, the volume of coronary plaque in MHD patients is significantly larger.<a class="elsevierStyleCrossRef" href="#bib0031">31</a> Similar to studies in MHD patients, serum fetuin-A i also significantly correlated with CAC score in non-dialysis ESRD patients.<a class="elsevierStyleCrossRef" href="#bib0032">32</a> This study found that serum fetuin-A level was negatively correlated with the severity of CAC, which was consistent with the above studies. In addition, fetuin-A protein expression in PBMCs from MHD patients gradually decreased with increasing CAC score.MGP can regulate intrachondral bone formation and vascular calcification and is associated with the downregulation of calcium deposition in the extracellular matrix of soft tissues. It has been suggested that elevated serum uncarboxylated MGP (ucMGP) is associated with aortic calcification.<a class="elsevierStyleCrossRef" href="#bib0033">33</a> A negative correlation exists between ucMGP level and CAC in patients with CKD. UcMGP can be used as a proxy for the presence of vascular calcification. Another study<a class="elsevierStyleCrossRef" href="#bib0034">34</a> has shown that baseline ucMGP levels are higher in MHD patients than normal. This study found that serum MGP level was positively correlated with the severity of CAC. In addition, MGP protein expression in PBMCs from MHD patients gradually increased with increasing CAC score.In addition, the authors found that serum Klotho, fetuin-A, and MGP were biomarkers for the recognition of CAC in MHD patients with high sensitivity and specificity, indicating values for clinically predicting CAC.ConclusionIn conclusion, serum Klotho, fetuin-A, and MGP were closely associated with the severity of CAC in MHD patients and were expected to be promising diagnostic markers for CAC in MHD patients.Ethics approvalThe present study was approved by the Ethics Committee of Yantaishan Hospital and written informed consent was provided by all patients prior to the study start. All procedures were performed in accordance with the ethical standards of the Institutional Review Board and The Declaration of Helsinki, and its later amendments or comparable ethical standards (201906GZ4).Data availableData is available from the corresponding author on request.Authors' contributionsDan Wang and XiuLin Chu the initiator of the study conducted the main experimental part, described the results, and wrote the article. JuHua Cao performed the statistical calculations, and participated in drafting of the manuscript. Dan Wang and YunHua Peng participated in collecting the research material. Lei Wang supervised the work." "textoCompletoSecciones" => array:1 [ "secciones" => array:12 [ 0 => array:3 [ "identificador" => "xres2291029" "titulo" => "Highlights" "secciones" => array:1 [ 0 => array:1 [ "identificador" => "abss0001" ] ] ] 1 => array:3 [ "identificador" => "xres2291028" "titulo" => "Abstract" "secciones" => array:4 [ 0 => array:2 [ "identificador" => "abss0002" "titulo" => "Objective" ] 1 => array:2 [ "identificador" => "abss0003" "titulo" => "Methods" ] 2 => array:2 [ "identificador" => "abss0004" "titulo" => "Results" ] 3 => array:2 [ "identificador" => "abss0005" "titulo" => "Conclusion" ] ] ] 2 => array:2 [ "identificador" => "xpalclavsec1903370" "titulo" => "Keywords" ] 3 => array:2 [ "identificador" => "sec0001" "titulo" => "Introduction" ] 4 => array:3 [ "identificador" => "sec0002" "titulo" => "Materials and methods" "secciones" => array:8 [ 0 => array:2 [ "identificador" => "sec0003" "titulo" => "Research objects" ] 1 => array:2 [ "identificador" => "sec0004" "titulo" => "Biochemical analysis" ] 2 => array:2 [ "identificador" => "sec0005" "titulo" => "Serum Klotho, fetuin-A, and MGP levels" ] 3 => array:2 [ "identificador" => "sec0006" "titulo" => "Isolation of peripheral blood mononuclear cells (PBMCs)" ] 4 => array:2 [ "identificador" => "sec0007" "titulo" => "Western blot" ] 5 => array:2 [ "identificador" => "sec0008" "titulo" => "CAC score" ] 6 => array:2 [ "identificador" => "sec0009" "titulo" => "Carotid intima-media thickness (IMT) measurement" ] 7 => array:2 [ "identificador" => "sec0010" "titulo" => "Statistical analysis" ] ] ] 5 => array:3 [ "identificador" => "sec0011" "titulo" => "Results" "secciones" => array:5 [ 0 => array:2 [ "identificador" => "sec0012" "titulo" => "Patient baseline characteristics" ] 1 => array:2 [ "identificador" => "sec0013" "titulo" => "CAC scores" ] 2 => array:2 [ "identificador" => "sec0014" "titulo" => "Klotho, fetuin-A, and MGP proteins in three defined groups of CAC scores" ] 3 => array:2 [ "identificador" => "sec0015" "titulo" => "Analysis of influencing factors of CAC in MHD patients" ] 4 => array:2 [ "identificador" => "sec0016" "titulo" => "Diagnostic value of serum Klotho, fetuin-A, and MGP for CAC in patients with MHD" ] ] ] 6 => array:2 [ "identificador" => "sec0017" "titulo" => "Discussion" ] 7 => array:2 [ "identificador" => "sec0018" "titulo" => "Conclusion" ] 8 => array:2 [ "identificador" => "sec0019" "titulo" => "Ethics approval" ] 9 => array:2 [ "identificador" => "sec0020" "titulo" => "Data available" ] 10 => array:2 [ "identificador" => "sec0021" "titulo" => "Authors' contributions" ] 11 => array:1 [ "titulo" => "References" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "fechaRecibido" => "2023-10-18" "fechaAceptado" => "2024-06-11" "PalabrasClave" => array:1 [ "en" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Keywords" "identificador" => "xpalclavsec1903370" "palabras" => array:5 [ 0 => "Maintenance hemodialysis patients" 1 => "Klotho" 2 => "Fetuin-A" 3 => "MGP" 4 => "Coronary artery calcification" ] ] ] ] "tieneResumen" => true "highlights" => array:2 [ "titulo" => "Highlights" "resumen" => "<ul class="elsevierStyleList" id="celist0001"><li class="elsevierStyleListItem" id="celistitem0001">•Serum Klotho, fetuin-A, and MGP were independent risk factors for CAC.</li><li class="elsevierStyleListItem" id="celistitem0002">•Serum Klotho, fetuin-A, and MGP were valuable in the diagnosis of CAC in MHD patients.</li><li class="elsevierStyleListItem" id="celistitem0003">•There is a close relationship between Klotho, fetuin-A, and MGP levels in MHD patients and CAC.</li></ul>" ] "resumen" => array:1 [ "en" => array:3 [ "titulo" => "Abstract" "resumen" => "ObjectiveThis study was to investigate the role of serum Klotho, fetuin-A, and Matrix Gla Protein (MGP) in Coronary Artery Calcification (CAC) in patients with Maintenance Hemodialysis (MHD) and their predictive value for CAC. Methods100 patients receiving MHD were selected. Serum Klotho, fetuin-A, and MGP levels were detected by ELISA. CAC scores were assessed by coronary CT scan. Multifactor analysis was used to evaluate the risk factors affecting CAC. The ability of serum Klotho, fetuin-A, and MGP levels to diagnose CAC was evaluated by receiver operating characteristic curves. ResultsSerum Klotho, fetuin-A, and MGP were independent risk factors for CAC. Serum Klotho, fetuin-A, and MGP were valuable in the diagnosis of CAC in MHD patients. ConclusionThere is a close relationship between Klotho, fetuin-A, and MGP levels in MHD patients and CAC." "secciones" => array:4 [ 0 => array:2 [ "identificador" => "abss0002" "titulo" => "Objective" ] 1 => array:2 [ "identificador" => "abss0003" "titulo" => "Methods" ] 2 => array:2 [ "identificador" => "abss0004" "titulo" => "Results" ] 3 => array:2 [ "identificador" => "abss0005" "titulo" => "Conclusion" ] ] ] ] "NotaPie" => array:1 [ 0 => array:3 [ "etiqueta" => "1" "nota" => "Equal contributions to this study." "identificador" => "fn1" ] ] "multimedia" => array:5 [ 0 => array:8 [ "identificador" => "fig0001" "etiqueta" => "Fig. 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 959 "Ancho" => 2167 "Tamanyo" => 111596 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "alt0001" "detalle" => "Fig " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "Klotho, fetuin-A, and MGP proteins in three defined groups of CAC scores. (A‒B) Protein expressions of Klotho, fetuin-A, and MGP in three defined groups of CAC scores were detected by Western blot." ] ] 1 => array:8 [ "identificador" => "fig0002" "etiqueta" => "Fig. 2" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr2.jpeg" "Alto" => 773 "Ancho" => 3250 "Tamanyo" => 144524 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "alt0002" "detalle" => "Fig " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "Diagnostic value of serum Klotho, fetuin-A, and MGP in CAC in MHD patients. (A‒C) ROC curve analysis of serum Klotho, fetuin-A, and MGP levels to predict CAC in MHD patients." ] ] 2 => array:8 [ "identificador" => "tbl0001" "etiqueta" => "Table 1" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "detalles" => array:1 [ 0 => array:3 [ "identificador" => "alt0003" "detalle" => "Table " "rol" => "short" ] ] "tabla" => array:1 [ "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><a name="en0001"></a><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="top" scope="col" style="border-bottom: 2px solid black">Parameters \t\t\t\t\t\t\n \t\t\t\t\t\t</th><a name="en0002"></a><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="top" scope="col" style="border-bottom: 2px solid black">MHD (n = 100) \t\t\t\t\t\t\n \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><a name="en0003"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Gender (male/female) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0004"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">46/54 (46.00%/54.00%) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0005"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Age (years) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0006"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">60.4 ± 11.5 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0007"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Body mass index (kg/m2) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0008"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">22.64 ± 0.57 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0009"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Dialysis vintage (years) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0010"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">6.79 ± 2.85 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0011"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Chronic glomerulonephritis \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0012"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">26 (26.00%) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0013"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Diabetic nephropathy \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0014"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">18 (18.00%) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0015"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Hypertensive nephropathy \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0016"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">14 (14.00%) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0017"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Polycystic kidney \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0018"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">7 (7.00%) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0019"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Chronic interstitial nephritis \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0020"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">6 (6.00%) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0021"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Uric acid nephropathy \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0022"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">5 (5.00%) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0023"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Obstructive nephropathy \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0024"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">4 (4.00%) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0025"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Unknown etiology \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0026"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">20 (20.00%) \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab3711727.png" ] ] ] ] "descripcion" => array:1 [ "en" => "General data and medical history of patients." ] ] 3 => array:8 [ "identificador" => "tbl0002" "etiqueta" => "Table 2" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "detalles" => array:1 [ 0 => array:3 [ "identificador" => "alt0004" "detalle" => "Table " "rol" => "short" ] ] "tabla" => array:1 [ "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><a name="en0027"></a><th class="td-with-role" title="\n \t\t\t\t\ttable-head\n \t\t\t\t ; entry_with_role_rowgroup " rowspan="1" align="left" valign="top" scope="col"></th><a name="en0028"></a><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="top" scope="col">CAC score \t\t\t\t\t\t\n \t\t\t\t\t\t</th><a name="en0029"></a><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="top" scope="col">CAC score \t\t\t\t\t\t\n \t\t\t\t\t\t</th><a name="en0030"></a><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="top" scope="col">CAC score \t\t\t\t\t\t\n \t\t\t\t\t\t</th><a name="en0031"></a><th class="td-with-role" title="\n \t\t\t\t\ttable-head\n \t\t\t\t ; entry_with_role_rowgroup " rowspan="1" align="left" valign="top" scope="col"></th></tr><tr title="table-row"><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col"> \t\t\t\t\t\t\n \t\t\t\t\t\t</th><a name="en0033"></a><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="top" scope="col">0‒100 \t\t\t\t\t\t\n \t\t\t\t\t\t</th><a name="en0034"></a><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="top" scope="col">100‒400 \t\t\t\t\t\t\n \t\t\t\t\t\t</th><a name="en0035"></a><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="top" scope="col">> 400 \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col"> \t\t\t\t\t\t\n \t\t\t\t\t\t</th></tr><tr title="table-row"><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Parameters \t\t\t\t\t\t\n \t\t\t\t\t\t</th><a name="en0038"></a><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="top" scope="col" style="border-bottom: 2px solid black">(n = 20) \t\t\t\t\t\t\n \t\t\t\t\t\t</th><a name="en0039"></a><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="top" scope="col" style="border-bottom: 2px solid black">(n = 25) \t\t\t\t\t\t\n \t\t\t\t\t\t</th><a name="en0040"></a><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="top" scope="col" style="border-bottom: 2px solid black">(n = 55) \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col" style="border-bottom: 2px solid black">p-value \t\t\t\t\t\t\n \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><a name="en0042"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">CAC score \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0043"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">48.32 ± 18.65 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0044"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">238.77 ± 85.03 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0045"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">1076.84 ± 340.59 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0046"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0047"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Gender (male/female) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0048"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">11/9 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0049"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">10/15 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0050"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">25/30 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0051"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.600 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0052"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Age (years) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0053"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">59.85 ± 7.20 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0054"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">60.24 ± 6.56 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0055"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">60.67 ± 6.98 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0056"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.895 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0057"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">BMI (kg/m2) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0058"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">21.45 ± 0.21 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0059"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">22.30 ± 0.16 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0060"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">23.23 ± 0.19 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0061"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0062"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Dialysis vintage (years) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0063"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">4.20 ± 0.22 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0064"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">5.10 ± 0.27 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0065"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">8.50 ± 0.25 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0066"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0067"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Kt/V \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0068"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">1.28 ± 0.04 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0069"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">1.24 ± 0.02 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0070"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">1.20 ± 0.03 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0071"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0072"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">IMT (mm) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0073"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.76 ± 0.06 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0074"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.82 ± 0.04 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0075"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.95 ± 0.10 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0076"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0077"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Hb (g/L) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0078"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">112.16 ± 8.48 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0079"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">109.94 ± 9.17 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0080"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">107.36 ± 9.85 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0081"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.131 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0082"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Alb (g/L) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0083"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">39.34 ± 3.57 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0084"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">38.51 ± 4.35 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0085"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">39.08 ± 4.74 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0086"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.803 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0087"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Calcium (mmoL/L) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0088"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">2.12 ± 0.10 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0089"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">2.09 ± 0.11 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0090"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">2.06 ± 0.12 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0091"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.119 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0092"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Phosphorus (mmoL/L) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0093"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">1.72 ± 0.34 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0094"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">1.95 ± 0.46 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0095"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">2.24 ± 0.25 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0096"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0097"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Calcium-phosphorus product (mmoL2/L2) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0098"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">3.64 ± 0.45 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0099"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">4.08 ± 0.38 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0100"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">4.61 ± 0.22 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0101"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0102"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Klotho (pg/mL) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0103"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">545.18 ± 64.25 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0104"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">526.34 ± 52.68 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0105"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">501.75 ± 46.93 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0106"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.005 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0107"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Fetuin-A (mg/mL) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0108"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">94.18 ± 6.15 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0109"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">87.49 ± 4.87 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0110"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">69.54 ± 3.16 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0111"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0112"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">MGP (pg/mL) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0113"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">170.07 ± 17.94 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0114"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">204.15 ± 13.16 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0115"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">309.51 ± 10.82 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0116"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab3711725.png" ] ] ] ] "descripcion" => array:1 [ "en" => "Comparison of coronary artery calcification parameters in different groups." ] ] 4 => array:8 [ "identificador" => "tbl0003" "etiqueta" => "Table 3" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "detalles" => array:1 [ 0 => array:3 [ "identificador" => "alt0005" "detalle" => "Table " "rol" => "short" ] ] "tabla" => array:1 [ "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><a name="en0117"></a><th class="td-with-role" title="\n \t\t\t\t\ttable-head\n \t\t\t\t ; entry_with_role_rowgroup " rowspan="2" align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Variable</th><a name="en0118"></a><th class="td-with-role" title="\n \t\t\t\t\ttable-head\n \t\t\t\t ; entry_with_role_rowgroup " rowspan="2" align="left" valign="top" scope="col" style="border-bottom: 2px solid black">B</th><a name="en0119"></a><th class="td-with-role" title="\n \t\t\t\t\ttable-head\n \t\t\t\t ; entry_with_role_colgroup " colspan="2" align="center" valign="top" scope="col" style="border-bottom: 2px solid black">95%CI</th><a name="en0120"></a><th class="td-with-role" title="\n \t\t\t\t\ttable-head\n \t\t\t\t ; entry_with_role_rowgroup " rowspan="2" align="left" valign="top" scope="col" style="border-bottom: 2px solid black">p-value</th></tr><tr title="table-row"><a name="en0123"></a><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="top" scope="col" style="border-bottom: 2px solid black">Lower \t\t\t\t\t\t\n \t\t\t\t\t\t</th><a name="en0124"></a><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="top" scope="col" style="border-bottom: 2px solid black">Upper \t\t\t\t\t\t\n \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><a name="en0126"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Dialysis vintage (years) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0127"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">6.4 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0128"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">4.16 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0129"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">19.35 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0130"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.024 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0131"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Phosphorus (mmoL/L) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0132"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">15.05 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0133"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">9.96 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0134"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">30.67 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0135"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.03 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0136"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Klotho (pg/mL) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0137"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">-0.56 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0138"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">-0.95 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0139"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">-0.31 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0140"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.027 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0141"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">Fetuin-A (mg/mL) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0142"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">-9.69 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0143"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">-21.34 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0144"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">-5.05 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0145"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.039 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><a name="en0146"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">MGP (pg/mL) \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0147"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">7.54 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0148"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">4.36 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0149"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">17.21 \t\t\t\t\t\t\n \t\t\t\t</td><a name="en0150"></a><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="top">0.013 \t\t\t\t\t\t\n 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Dan Wanga,1, XiuLin Chub,1, JuHua Caoc, YunHua Pengd,

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wanglei_1346_gphc@hotmail.com

Corresponding author.

a Department of East Hospital Nephrology, Yantaishan Hospital, Yantai City, Shandong Province, China

b Department of Nephrology, The People's Hospital of Xushui, Baoding City, Hebei Province, China

c Department of Outpatient, The General Hospital of Western Theater Command of Chinese people's liberation army, Chengdu City, Sichuan Province, China

d Department of Nephrology, Dafeng People's Hospital, Yancheng City, JiangSu Province, China

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            "en" => "<p id="spara003" class="elsevierStyleSimplePara elsevierViewall">OXY enhanced PTX-induced apoptosis in SKBR3 cells&#46; &#40;A&#41; Cells were treated with OXY &#40;0&#46;25&#44; 0&#46;5&#44; 1 mM&#41; for 48h&#44; and with OXY plus PTX &#40;8 &#956;M&#41; for 24h&#46; Apoptotic cells were detected after Annexin V and PI double staining&#46; The apoptotic rate was calculated&#46; &#42; p &#60; 0&#46;05 vs&#46; group C and P&#46; &#40;B&#41; The expression of apoptosis-related proteins &#40;Bcl-2 and Bax&#41; was detected by Western blotting&#46; &#42; p &#60; 0&#46;05 vs&#46; group C and P&#46; &#35; p &#60; 0&#46;05&#44; O 0&#46;25 group and O 1 group vs&#46; O 0&#46;5 group&#44; P&#43; O 0&#46;25 group and P&#43; O 1 group vs&#46; P&#43; O 0&#46;25 group&#46; At least three independent experiments in each group&#46; Abbreviation&#58; P&#44; Paclitaxel&#59; C&#44; Control&#59; O&#44; Oxycodone&#46;</p>"
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          "resumen" => "<span id="abss0001" class="elsevierStyleSection elsevierViewall"><p id="spara007" class="elsevierStyleSimplePara elsevierViewall"><ul class="elsevierStyleList" id="celist0001"><li class="elsevierStyleListItem" id="celistitem0001"><span class="elsevierStyleLabel">&#8226;</span><p id="para0001" class="elsevierStylePara elsevierViewall">Oxycodone markedly induced the apoptosis of SKBR3 cells&#46;</p></li><li class="elsevierStyleListItem" id="celistitem0002"><span class="elsevierStyleLabel">&#8226;</span><p id="para0002" class="elsevierStylePara elsevierViewall">Oxycodone distinguished enhanced antitumor effect of PTX on SKBR3 cells&#46;</p></li><li class="elsevierStyleListItem" id="celistitem0003"><span class="elsevierStyleLabel">&#8226;</span><p id="para0003" class="elsevierStylePara elsevierViewall">OXY can enhance antitumor effect of PTX on breast cancer <span class="elsevierStyleItalic">in vitro</span>&#46;</p></li></ul></p></span>"
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    "titulo" => "Correlation of serum Klotho&#44; fetuin-A&#44; and MGP levels with coronary artery calcification in maintenance hemodialysis patients"
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        "autoresLista" => "Dan Wang, XiuLin Chu, JuHua Cao, YunHua Peng"
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          "en" => "<p id="spara001" class="elsevierStyleSimplePara elsevierViewall">Klotho&#44; fetuin-A&#44; and MGP proteins in three defined groups of CAC scores&#46; &#40;A&#8210;B&#41; Protein expressions of Klotho&#44; fetuin-A&#44; and MGP in three defined groups of CAC scores were detected by Western blot&#46;</p>"
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    "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0001" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0008">Introduction</span><p id="para0009" class="elsevierStylePara elsevierViewall">Chronic Kidney Disease &#40;CKD&#41; is a growing health problem worldwide&#44; affecting approximately 10&#37;&#8210;16&#37; of the adult population worldwide&#46;<a class="elsevierStyleCrossRef" href="#bib0001"><span class="elsevierStyleSup">1</span></a> The prevalence of CKD in China has reached 10&#46;8&#37;&#44;<a class="elsevierStyleCrossRef" href="#bib0002"><span class="elsevierStyleSup">2</span></a> and the number of Maintenance Hemodialysis &#40;MHD&#41; patients is also gradually increasing&#46; MHD patients are more likely to have vascular calcifications<a class="elsevierStyleCrossRef" href="#bib0003"><span class="elsevierStyleSup">3</span></a> and Coronary Artery Calcification &#40;CAC&#41;&#46;<a class="elsevierStyleCrossRefs" href="#bib0004"><span class="elsevierStyleSup">4-6</span></a> In light of this&#44; evaluating and preventing CAC is becoming increasingly important&#46;</p><p id="para0010" class="elsevierStylePara elsevierViewall">CAC is not a simple precipitation of calcium and phosphorus&#44; but an active and constantly changing process&#44;<a class="elsevierStyleCrossRef" href="#bib0007"><span class="elsevierStyleSup">7</span></a> which is currently thought to be the deposition of an organized extracellular matrix caused by osteoblast-like cells&#46; It is formed when Vascular Smooth Muscle Cells &#40;VSMCs&#41; undergo transdifferentiation as a result of factors such as hyperphosphatemia&#46; VSMCs produce a matrix composed of collagen and non-collagen proteins&#46; If pro-mineralization factors exceed inhibitory factors&#44; the lesion will be mineralized&#44;<a class="elsevierStyleCrossRef" href="#bib0008"><span class="elsevierStyleSup">8</span></a> and the imbalance between pro-mineralization factors &#40;hyperphosphatemia&#44; inflammation&#41; and the inhibitory factors &#40;fetuin-A and others&#41; ultimately leads to vascular calcification even in early CKD&#46;</p><p id="para0011" class="elsevierStylePara elsevierViewall">An aging suppressor gene named Klotho was first reported in 1997&#46;<a class="elsevierStyleCrossRef" href="#bib0009"><span class="elsevierStyleSup">9</span></a> As an FGF-23 co-receptor&#44; Klotho is primarily expressed in the choroid plexus&#44; distal convoluted tubules&#44; and parathyroid glands&#46;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">10</span></a><span class="elsevierStyleSup">&#44;</span><a class="elsevierStyleCrossRef" href="#bib0011"><span class="elsevierStyleSup">11</span></a> Various aging-related disorders have been linked to Klotho&#44; including organ atrophy&#44; premature atherosclerosis&#44; calcified vascular and soft tissues&#44; and cancer&#46;<a class="elsevierStyleCrossRef" href="#bib0012"><span class="elsevierStyleSup">12</span></a></p><p id="para0012" class="elsevierStylePara elsevierViewall">The 62-kilodalton glycoprotein&#44; feluin-A&#44; is a cystatin-family member&#46; As secreted from the liver&#44; the 349-amino acid protein consists of a heavy and light chain that is joined and linked&#46;<a class="elsevierStyleCrossRef" href="#bib0013"><span class="elsevierStyleSup">13</span></a> Two cystatin domains exist at the N-terminus of the heavy chain&#44; D1 and D2&#46; Acidic amino acids in the D1 domain are believed to be responsible for the ability of fetuin to inhibit calcium and phosphorus precipitation&#46;<a class="elsevierStyleCrossRef" href="#bib0013"><span class="elsevierStyleSup">13</span></a> It is mainly due to fetuin-A that serum prevents calcium and phosphorus precipitation <span class="elsevierStyleItalic">in vitro</span>&#46; Currently&#44; fetuin-A is recognized as an active regulator of osteogenesis within the vessels&#46; Fetuin-A binds to annexin II and I on cell surfaces in the presence of calcium&#46;<a class="elsevierStyleCrossRef" href="#bib0014"><span class="elsevierStyleSup">14</span></a> As a result of this binding&#44; fetuin-A can enter the endosomes within VSMCs&#46;<a class="elsevierStyleCrossRef" href="#bib0015"><span class="elsevierStyleSup">15</span></a> Fetuin-A inhibits VMSC apoptosis intracellularly&#46;<a class="elsevierStyleCrossRef" href="#bib0016"><span class="elsevierStyleSup">16</span></a> Furthermore&#44; it inhibits mineralization and suppresses calcium phosphate nucleation&#46;<a class="elsevierStyleCrossRef" href="#bib0016"><span class="elsevierStyleSup">16</span></a> In addition&#44; fetuin-A inhibits bone morphogenetic protein-2&#44; a key osteogenic protein that triggers the transdifferentiation of calcifying vascular cells&#46;<a class="elsevierStyleCrossRef" href="#bib0013"><span class="elsevierStyleSup">13</span></a></p><p id="para0013" class="elsevierStylePara elsevierViewall">A vascular calcification inhibitor&#44; Matrix Gla Protein &#40;MGP&#41;&#44; depends on vitamin K for its activation&#46; A higher plasma level of desphospho-uncarboxylated MGP &#40;indicative of poor vascular vitamin K status&#41; is linked with an increased cardiovascular risk&#46;<a class="elsevierStyleCrossRef" href="#bib0017"><span class="elsevierStyleSup">17</span></a> MGP levels have been demonstrated to be high in Maintenance Hemodialysis &#40;MHD&#41; patients&#46;<a class="elsevierStyleCrossRef" href="#bib0018"><span class="elsevierStyleSup">18</span></a></p><p id="para0014" class="elsevierStylePara elsevierViewall">However&#44; the effects of serum Klotho&#44; fetuin-A&#44; and MGP levels on CAC and the predictive value of these biomarkers in MHD patients are unclear&#46; This study investigated Klotho&#44; fetuin-A&#44; and MGP in CAC in MHD patients&#46;</p></span><span id="sec0002" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0009">Materials and methods</span><span id="sec0003" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0010">Research objects</span><p id="para0015" class="elsevierStylePara elsevierViewall">100 patients receiving MHD in Yantaishan Hospital were selected&#46; MHD was performed with bicarbonate dialysate containing 1&#46;5 mmoL&#47;L Ca<span class="elsevierStyleSup">2&#43;</span> on a polysulfone membrane dialyzer&#46; Blood flow was 200&#8210;250 mL&#47;min&#44; dialysate flow rate was 500 mL&#47;min&#44; and dialysate temperature was 37&#176;C&#46; The anticoagulant treatment was conventional heparin or low molecular-weight heparin&#46; MHD was generally performed 4&#8210;5h per time&#44; 2&#8210;3 times a week&#46; An autologous arteriovenous fistula was established as vascular access&#46; Patients with hypoproteinemia&#44; active hectic diseases&#44; hepatobiliary disease&#44; severe infection&#44; gastrointestinal bleeding&#44; retinal bleeding&#44; or other active bleeding conditions were excluded&#46; Patients were divided into 3 groups according to CAC scores &#40;0&#8210;100&#44; 100&#8210;400&#44; and &#62; 400&#41;&#46; Basic clinical data were recorded&#46; This study was an observational clinical study following the Strengthening the Reporting of Observational Studies in Epidemiology &#40;STROBE&#41; guidelines&#46;</p></span><span id="sec0004" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0011">Biochemical analysis</span><p id="para0016" class="elsevierStylePara elsevierViewall">Fasting venous blood was collected to detect hemoglobin&#44; Albumin &#40;Alb&#41;&#44; blood calcium&#44; and blood phosphorus levels&#46; Totalcalcium&#40;mgdL&#41;&#61;totalcalcium&#43;0&#46;8&#215;&#91;4&#8722;Alb&#40;mgdL&#41;&#93;&#46; The corrected total calcium is used to calculate the calcium-phosphorus product&#46; Dialysis adequacy was evaluated by calculating the ratio of urea clearance to Volume &#40;Kt&#47;V&#41;&#46;</p></span><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0012">Serum Klotho&#44; fetuin-A&#44; and MGP levels</span><p id="para0017" class="elsevierStylePara elsevierViewall">Fasting venous blood was centrifuged and cryopreserved for follow-up testing&#46; Serum Klotho&#44; fetuin-A and MGP levels were detected by ELISA&#44; and then the correlation between serum Klotho&#44; fetuin-A and MGP levels and CAC in MHD patients was analyzed&#46; Specifically&#44; serum Klotho levels were detected using an ELISA kit &#40;IBL-International&#44; Japan&#41;&#46; Klotho in all samples exceeded the detection limit of 6 pg&#47;mL&#46; Intra-assay and inter-assay variations were 3&#46;6&#37; and 3&#46;2&#37; for the Klotho standard and 2&#46;8&#37; and 3&#46;6&#37; for the human sample&#44; respectively&#46; Serum fetuin-A levels were detected using an ELISA kit &#40;Bio-Swamp&#44; USA&#41;&#46; The mean intra-assay and inter-assay variations were 5&#46;6&#37; and 6&#46;2&#37;&#44; respectively&#46; The reference range for healthy adults is 0&#46;5&#8210;1&#46;0 g&#47;L&#44; with a minimum sensitivity of 2&#46;5 ng&#47;mL&#46; Serum MGP levels were detected using an ELISA kit &#40;Bio-Swamp&#41;&#46; Intra-assay and inter-assay variations were 5&#46;4&#37; and 7&#46;2&#37;&#44; respectively&#46; The lower limit is 5 pg&#47;mL&#46;</p></span><span id="sec0006" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0013">Isolation of peripheral blood mononuclear cells &#40;PBMCs&#41;</span><p id="para0018" class="elsevierStylePara elsevierViewall">Venous blood &#40;1&#46;5 mL&#41; was diluted with phosphate buffer at 1&#58;1 and transferred into a centrifuge tube containing 3 mL Ficoll Paque &#40;GE Healthcare&#44; Uppsala&#44; Sweden&#41;&#46; PBMCs were collected after centrifugation at 400&#215; g at room temperature for 20 min and rinsed twice in 10 mL PBS&#46; PBMCs were re-suspended in a lysis buffer for protein extraction&#46;</p></span><span id="sec0007" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0014">Western blot</span><p id="para0019" class="elsevierStylePara elsevierViewall">The protein expression levels of Klotho&#44; fetuin-A and MGP in PBMCs of MHD patients were detected by Western blot&#44; which in turn increased the reliability of the results of serum Klotho&#44; fetuin-A and MGP levels&#46; The cell lysate was prepared&#44; and the protein concentration was detected by the BCA protein detection reagent&#46; Protein &#40;10&#8210;30 &#956;g&#41; was electrophoresed on an 8&#37; or 12&#37; SDS-polyacrylamide gel&#44; transferred to a PVDF membrane&#44; and sealed at room temperature for 2h in 5&#37; skim milk containing PBST&#46; Subsequently&#44; the membrane was incubated with the primary antibody at 4&#176;C overnight and then re-detected with HRP-bound secondary antibody &#40;1&#58;3000&#41; for 2h&#46; Protein expression was finally shown using the ECL kit&#46;</p></span><span id="sec0008" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0015">CAC score</span><p id="para0020" class="elsevierStylePara elsevierViewall">CT scans were performed using 64-slice spiral technology &#40;Lightspeed VCT&#44; USA&#41;&#46; Continuous images were acquired by plain axial scan combined with retrospective electrocardio gram gating during diastole of the cardiac cycle from the carina to the apex&#46; At 60&#37;&#8210;80&#37; R-R interval&#44; the images were obtained during a single breath-hold&#46; Plain 3&#46;0-mm images were reconstructed at a 40&#37; R-R interval in the diastolic phase&#46; CAC scores were calculated using SmartScore software &#40;GE Healthcare&#44; USA&#41;&#46; Attenuation values over 130 hounsfield units were considered to be the cut-off point for calcification lesions&#46; Areas greater than 0&#46;5 mm<span class="elsevierStyleSup">2</span> were considered calcified&#46; Left main&#44; Left Anterior Descending &#40;LAD&#41;&#44; Left Circumflex &#40;LCX&#41;&#44; and right coronary artery were marked for calcification&#46; LAD calcification refers to the calcification of diagonal branches&#44; while LCX calcification refers to obtuse marginal branches&#46; Total CAC scores were calculated automatically&#46; CT scan &#40;512&#215;512 matrix&#59; 25&#8210;28 cm filed of view&#41;&#58; peak voltage at 120 KV&#44; tube current at 450 mA&#44; collimator width of 1&#46;5 mm&#44; pitch of 0&#46;24&#44; scanning time for 5&#8210;8s&#44; gantry rotation time for 0&#46;35s&#44; slice thickness of 2&#46;5 mm&#44; and reconstruction interval of 2&#46;5 mm&#46;</p></span><span id="sec0009" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0016">Carotid intima-media thickness &#40;IMT&#41; measurement</span><p id="para0021" class="elsevierStylePara elsevierViewall">Common Carotid Artery &#40;CCA&#41; was examined from both longitudinal and transverse angles using a color Doppler ultrasound system &#40;LOGIC 9&#44; General Electric&#41;&#46; During the left ventricular diastolic period&#44; CCA images at 1&#46;5&#8210;2 cm below the carotid sinus were obtained&#46; Measurements were repeated for 3 cardiac cycles on each side&#46; There are two parallel bright lines in the posterior wall of CCA&#44; and the echo intensity was relatively low&#46; IMT was calculated based on the vertical distance between the two lines&#44; which is the average of six carotid artery measurements&#46; It was the same sonographer who performed each scan&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0017">Statistical analysis</span><p id="para0022" class="elsevierStylePara elsevierViewall">Analyses were performed with SPSS 16&#46;0 software&#46; Two-sided tests were used for all statistical inferences&#59; p &#60; 0&#46;05 was considered statistically significant&#46; If the data fit the homogeneity of variance and the normal distribution&#44; the comparison was done with an independent sample <span class="elsevierStyleItalic">t</span>-test&#59; if not&#44; the Wilcoxon rank sum test was used&#46; One-way analysis of variance was used for comparison among groups&#44; and the least significant difference method was for that between two means&#46; Variance heterogeneity data were assessed by the Wilcoxon rank sum test&#46; Continuous variables were analyzed by Principal Component Analysis &#40;PCA&#41;&#44; and categorical variables were analyzed by Multiple Correspondence Analysis &#40;MCA&#41; to build a random forest model to assess the importance of each variable&#46; Then&#44; multiple stepwise regression analysis was performed with CAC score as the dependent variable and gender &#40;female &#61; 0&#44; male &#61; 1&#41;&#44; age&#44; BMI&#44; dialysis vintage&#44; Kt&#47;V&#44; IMT&#44; blood calcium level&#44; blood phosphorus level&#44; calcium-phosphorus product&#44; iPTH&#44; Klotho&#44; fetuin-A&#44; and MGP as independent variables&#46; Partial regression coefficient and 95&#37; CI were calculated&#46; The Receiver Operating Characteristic &#40;ROC&#41; curve was plotted and Area Under the Curve &#40;AUC&#41; was analyzed&#46;</p></span></span><span id="sec0011" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0018">Results</span><span id="sec0012" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0019">Patient baseline characteristics</span><p id="para0023" class="elsevierStylePara elsevierViewall">Among the 100 patients&#44; 46 &#40;46&#46;00&#37;&#41; were males and 54 &#40;54&#46;00&#37;&#41; were females&#46; The mean age was 60&#46;40&#177;11&#46;50 years&#44; and the mean dialysis vintage was 6&#46;79&#177;2&#46;85 years&#46; The top 3 underlying diseases were chronic glomerulonephritis &#40;26 cases&#44; 26&#46;00&#37;&#41;&#44; diabetes &#40;18 cases&#44; 18&#46;00&#37;&#41;&#44; and hypertensive nephropathy &#40;14 cases&#44; 14&#46;00&#37;&#41; &#40;<a class="elsevierStyleCrossRef" href="#tbl0001">Table 1</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0001"></elsevierMultimedia></span><span id="sec0013" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0020">CAC scores</span><p id="para0024" class="elsevierStylePara elsevierViewall"><a class="elsevierStyleCrossRef" href="#tbl0002">Table 2</a> summarizes the characteristics of patients in the three defined groups of CAC scores 0&#8210;100&#44; 100&#8210;400&#44; and &#62; 400&#46; There were significant differences in BMI&#44; dialysis vintage&#44; Kt&#47;V&#44; IMT&#44; blood phosphorus&#44; calcium-phosphorus product&#44; Klotho&#44; fetuin-A&#44; and MGP&#46; With the increase of CAC score&#44; MHD patients had increased dialysis vintage&#44; higher BMI&#44; IMT&#44; blood phosphorus levels&#44; calcium-phosphorus product&#44; and lower Kt&#47;V&#46; The serum levels of Klotho&#44; fetuin-A and MGP in MHD patients were measured by ELISA&#46; With the increase in CAC score&#44; serum MGP showed an increasing trend&#44; and serum Klotho and fetuin-A showed a decreasing trend&#46;</p><elsevierMultimedia ident="tbl0002"></elsevierMultimedia></span><span id="sec0014" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0021">Klotho&#44; fetuin-A&#44; and MGP proteins in three defined groups of CAC scores</span><p id="para0025" class="elsevierStylePara elsevierViewall">Klotho&#44; fetuin-A&#44; and MGP protein expression levels in PBMCs of MHD patients in different CAC score groups were detected by Western blot&#46; With the increase of CAC score&#44; Klotho and fetuin-A proteins gradually decreased&#44; while MGP proteins gradually increased &#40;<a class="elsevierStyleCrossRef" href="#fig0001">Fig&#46; 1</a> A&#8210;B&#41;&#46;</p><elsevierMultimedia ident="fig0001"></elsevierMultimedia></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0022">Analysis of influencing factors of CAC in MHD patients</span><p id="para0026" class="elsevierStylePara elsevierViewall">Multiple stepwise regression analysis with CAC score as the dependent variable and gender &#40;female &#61; 0&#44; male &#61; 1&#41;&#44; age&#44; BMI&#44; dialysis vintage&#44; Kt&#47;V&#44; IMT&#44; blood calcium level&#44; blood phosphorus level&#44; calcium-phosphorus product&#44; iPTH&#44; Klotho&#44; fetuin-A&#44; and MGP as independent variables showed that after controlling gender and age&#44; dialysis vintage&#44; blood phosphorus&#44; serum Klotho&#44; fetuin-A&#44; and MGP were independent risk factors for CAC in MHD patients &#40;<a class="elsevierStyleCrossRef" href="#tbl0003">Table 3</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0003"></elsevierMultimedia></span><span id="sec0016" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0023">Diagnostic value of serum Klotho&#44; fetuin-A&#44; and MGP for CAC in patients with MHD</span><p id="para0027" class="elsevierStylePara elsevierViewall">ROC curves were drawn to analyze the value of serum Klotho&#44; fetuin-A&#44; and MGP levels in predicting CAC in MHD patients&#46; The AUC of serum Klotho&#44; fetuin-A&#44; and MGP was 0&#46;777&#44; 0&#46;744&#44; and 0&#46;815&#44; respectively &#40;<a class="elsevierStyleCrossRef" href="#fig0002">Fig&#46; 2</a> A&#8210;C&#41;&#46;</p><elsevierMultimedia ident="fig0002"></elsevierMultimedia></span></span><span id="sec0017" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0024">Discussion</span><p id="para0028" class="elsevierStylePara elsevierViewall">Vascular calcification is common in patients with MHD&#46; Data showed that 27&#37; of patients receiving dialysis for 1 year found vascular calcification&#44; and the incidence increased to 83&#37; of patients receiving dialysis for more than 8 years&#46;<a class="elsevierStyleCrossRef" href="#bib0019"><span class="elsevierStyleSup">19</span></a><span class="elsevierStyleSup">&#44;</span><a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">20</span></a> One hundred MHD patients with dialysis vintage of 6&#46;79 &#177; 2&#46;85 years were included in this study&#44; of which 20 &#40;20&#46;00&#37;&#41;&#44; 25 &#40;25&#46;00&#37;&#41; and 55 &#40;55&#46;00&#37;&#41; had CAC scores of 0&#8210;100&#44; 100&#8210;400 and &#62; 400&#44; respectively&#46;</p><p id="para0029" class="elsevierStylePara elsevierViewall">MHD patients often have renal phosphorus metabolism disorder&#44; and intake of phosphorus-rich foods results in phosphorus retention and stimulate iPTH secretion&#46; Calcium and phosphorus can be released from bones into the extracellular space due to excess iPTH&#44; aggravating hyperphosphatemia&#44; which is associated with vascular calcification&#46; Hyperphosphatemia&#44; calcium-phosphorus accumulation&#44; and high calcium intake are associated with CAC&#46;<a class="elsevierStyleCrossRef" href="#bib0003"><span class="elsevierStyleSup">3</span></a> Vascular calcification can be alleviated by applying sevelamer hydrochloride actively to correct hyperphosphatemia&#46;<a class="elsevierStyleCrossRef" href="#bib0021"><span class="elsevierStyleSup">21</span></a> It has been indicated that inorganic phosphorus not only induces the transformation of VSMCs to osteoblast-like cells but stimulates osteoblast proliferation&#46;<a class="elsevierStyleCrossRef" href="#bib0022"><span class="elsevierStyleSup">22</span></a> It would seem that hyperphosphatemia may cause vascular walls to thicken&#44; resulting in vascular calcification in patients with MHD&#46; MHD and serum calcium and phosphorus levels are independent risk factors for CAC&#46;<a class="elsevierStyleCrossRef" href="#bib0023"><span class="elsevierStyleSup">23</span></a> For every 0&#46;322 mmoL&#47;L increase in blood phosphorus levels&#44; the risk of developing CAC is comparable to that of 2&#46;5 years of hemodialysis&#46; According to a systematic review&#44; dialysis duration and age are the most significant risk factors for CAC&#46;<a class="elsevierStyleCrossRef" href="#bib0024"><span class="elsevierStyleSup">24</span></a> In this study&#44; the authors found that dialysis vintage and blood phosphorus levels were risk factors for the development of CAC&#46;</p><p id="para0030" class="elsevierStylePara elsevierViewall">The renal protective mechanism of Klotho against CKD has been reported previously&#46; Klotho gene manipulation can improve renal function in mice with progressive kidney injury&#46;<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">25</span></a> Renal fibrosis is associated with Klotho deficiency&#44; and Klotho treatment could prevent fibrotic kidney changes in mice&#46;<a class="elsevierStyleCrossRef" href="#bib0026"><span class="elsevierStyleSup">26</span></a> Klotho deletion results in increased renal inflammation through RelA &#40;Serine&#41;<span class="elsevierStyleSup">536</span> phosphorylation&#46;<a class="elsevierStyleCrossRef" href="#bib0027"><span class="elsevierStyleSup">27</span></a> In addition&#44; Klotho can improve vascular calcification&#46;<a class="elsevierStyleCrossRef" href="#bib0028"><span class="elsevierStyleSup">28</span></a> In this study&#44; serum fetuin-A levels were inversely associated with the severity of CAC&#46; In addition&#44; Klotho protein expression in PBMCs from MHD patients gradually decreased with increasing CAC score&#46;</p><p id="para0031" class="elsevierStylePara elsevierViewall">During arterial calcification&#44; fetuin-A acts as a calcification inhibitor&#46; It has been reported that serum fetuin-A level is negatively associated with CAC in 30 MHD patients&#46;<a class="elsevierStyleCrossRef" href="#bib0029"><span class="elsevierStyleSup">29</span></a> Moreover&#44; serum fetuin-A levels are reduced in patients with calcification scores &#62; 5&#44; and serum fetuin-A &#60; 0&#46;29 g&#47;L is associated with the risk of cardiovascular calcification progression&#46;<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">30</span></a> Moreover&#44; the volume of coronary plaque in MHD patients is significantly larger&#46;<a class="elsevierStyleCrossRef" href="#bib0031"><span class="elsevierStyleSup">31</span></a> Similar to studies in MHD patients&#44; serum fetuin-A i also significantly correlated with CAC score in non-dialysis ESRD patients&#46;<a class="elsevierStyleCrossRef" href="#bib0032"><span class="elsevierStyleSup">32</span></a> This study found that serum fetuin-A level was negatively correlated with the severity of CAC&#44; which was consistent with the above studies&#46; In addition&#44; fetuin-A protein expression in PBMCs from MHD patients gradually decreased with increasing CAC score&#46;</p><p id="para0032" class="elsevierStylePara elsevierViewall">MGP can regulate intrachondral bone formation and vascular calcification and is associated with the downregulation of calcium deposition in the extracellular matrix of soft tissues&#46; It has been suggested that elevated serum uncarboxylated MGP &#40;ucMGP&#41; is associated with aortic calcification&#46;<a class="elsevierStyleCrossRef" href="#bib0033"><span class="elsevierStyleSup">33</span></a> A negative correlation exists between ucMGP level and CAC in patients with CKD&#46; UcMGP can be used as a proxy for the presence of vascular calcification&#46; Another study<a class="elsevierStyleCrossRef" href="#bib0034"><span class="elsevierStyleSup">34</span></a> has shown that baseline ucMGP levels are higher in MHD patients than normal&#46; This study found that serum MGP level was positively correlated with the severity of CAC&#46; In addition&#44; MGP protein expression in PBMCs from MHD patients gradually increased with increasing CAC score&#46;</p><p id="para0033" class="elsevierStylePara elsevierViewall">In addition&#44; the authors found that serum Klotho&#44; fetuin-A&#44; and MGP were biomarkers for the recognition of CAC in MHD patients with high sensitivity and specificity&#44; indicating values for clinically predicting CAC&#46;</p></span><span id="sec0018" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0025">Conclusion</span><p id="para0034" class="elsevierStylePara elsevierViewall">In conclusion&#44; serum Klotho&#44; fetuin-A&#44; and MGP were closely associated with the severity of CAC in MHD patients and were expected to be promising diagnostic markers for CAC in MHD patients&#46;</p></span><span id="sec0019" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0026">Ethics approval</span><p id="para0035" class="elsevierStylePara elsevierViewall">The present study was approved by the Ethics Committee of Yantaishan Hospital and written informed consent was provided by all patients prior to the study start&#46; All procedures were performed in accordance with the ethical standards of the Institutional Review Board and The Declaration of Helsinki&#44; and its later amendments or comparable ethical standards &#40;201906GZ4&#41;&#46;</p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0027">Data available</span><p id="para0036" class="elsevierStylePara elsevierViewall">Data is available from the corresponding author on request&#46;</p></span><span id="sec0021" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0028">Authors&#39; contributions</span><p id="para0037" class="elsevierStylePara elsevierViewall">Dan Wang and XiuLin Chu the initiator of the study conducted the main experimental part&#44; described the results&#44; and wrote the article&#46; JuHua Cao performed the statistical calculations&#44; and participated in drafting of the manuscript&#46; Dan Wang and YunHua Peng participated in collecting the research material&#46; Lei Wang supervised the work&#46;</p></span></span>"
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          "titulo" => "Introduction"
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          "titulo" => "Materials and methods"
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              "titulo" => "Serum Klotho&#44; fetuin-A&#44; and MGP levels"
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            3 => array:2 [
              "identificador" => "sec0006"
              "titulo" => "Isolation of peripheral blood mononuclear cells &#40;PBMCs&#41;"
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              "titulo" => "Western blot"
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              "titulo" => "Carotid intima-media thickness &#40;IMT&#41; measurement"
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              "titulo" => "Patient baseline characteristics"
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              "titulo" => "CAC scores"
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            2 => array:2 [
              "identificador" => "sec0014"
              "titulo" => "Klotho&#44; fetuin-A&#44; and MGP proteins in three defined groups of CAC scores"
            ]
            3 => array:2 [
              "identificador" => "sec0015"
              "titulo" => "Analysis of influencing factors of CAC in MHD patients"
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            4 => array:2 [
              "identificador" => "sec0016"
              "titulo" => "Diagnostic value of serum Klotho&#44; fetuin-A&#44; and MGP for CAC in patients with MHD"
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    "tienePdf" => true
    "fechaRecibido" => "2023-10-18"
    "fechaAceptado" => "2024-06-11"
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            0 => "Maintenance hemodialysis patients"
            1 => "Klotho"
            2 => "Fetuin-A"
            3 => "MGP"
            4 => "Coronary artery calcification"
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    "highlights" => array:2 [
      "titulo" => "Highlights"
      "resumen" => "<span id="abss0001" class="elsevierStyleSection elsevierViewall"><p id="spara006" class="elsevierStyleSimplePara elsevierViewall"><ul class="elsevierStyleList" id="celist0001"><li class="elsevierStyleListItem" id="celistitem0001"><span class="elsevierStyleLabel">&#8226;</span><p id="para0002" class="elsevierStylePara elsevierViewall">Serum Klotho&#44; fetuin-A&#44; and MGP were independent risk factors for CAC&#46;</p></li><li class="elsevierStyleListItem" id="celistitem0002"><span class="elsevierStyleLabel">&#8226;</span><p id="para0003" class="elsevierStylePara elsevierViewall">Serum Klotho&#44; fetuin-A&#44; and MGP were valuable in the diagnosis of CAC in MHD patients&#46;</p></li><li class="elsevierStyleListItem" id="celistitem0003"><span class="elsevierStyleLabel">&#8226;</span><p id="para0004" class="elsevierStylePara elsevierViewall">There is a close relationship between Klotho&#44; fetuin-A&#44; and MGP levels in MHD patients and CAC&#46;</p></li></ul></p></span>"
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    "resumen" => array:1 [
      "en" => array:3 [
        "titulo" => "Abstract"
        "resumen" => "<span id="abss0002" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0003">Objective</span><p id="spara007" class="elsevierStyleSimplePara elsevierViewall">This study was to investigate the role of serum Klotho&#44; fetuin-A&#44; and Matrix Gla Protein &#40;MGP&#41; in Coronary Artery Calcification &#40;CAC&#41; in patients with Maintenance Hemodialysis &#40;MHD&#41; and their predictive value for CAC&#46;</p></span> <span id="abss0003" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0004">Methods</span><p id="spara008" class="elsevierStyleSimplePara elsevierViewall">100 patients receiving MHD were selected&#46; Serum Klotho&#44; fetuin-A&#44; and MGP levels were detected by ELISA&#46; CAC scores were assessed by coronary CT scan&#46; Multifactor analysis was used to evaluate the risk factors affecting CAC&#46; The ability of serum Klotho&#44; fetuin-A&#44; and MGP levels to diagnose CAC was evaluated by receiver operating characteristic curves&#46;</p></span> <span id="abss0004" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0005">Results</span><p id="spara009" class="elsevierStyleSimplePara elsevierViewall">Serum Klotho&#44; fetuin-A&#44; and MGP were independent risk factors for CAC&#46; Serum Klotho&#44; fetuin-A&#44; and MGP were valuable in the diagnosis of CAC in MHD patients&#46;</p></span> <span id="abss0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cesectitle0006">Conclusion</span><p id="spara010" class="elsevierStyleSimplePara elsevierViewall">There is a close relationship between Klotho&#44; fetuin-A&#44; and MGP levels in MHD patients and CAC&#46;</p></span>"
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                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><a name="en0001"></a><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">Parameters&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><a name="en0002"></a><th class="td" title="\n
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                  \t\t\t\t  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">MHD &#40;n &#61; 100&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><a name="en0003"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Gender &#40;male&#47;female&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0004"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">46&#47;54 &#40;46&#46;00&#37;&#47;54&#46;00&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0005"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Age &#40;years&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0006"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">60&#46;4 &#177; 11&#46;5&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0007"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Body mass index &#40;kg&#47;m2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0008"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">22&#46;64 &#177; 0&#46;57&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0009"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Dialysis vintage &#40;years&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0010"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">6&#46;79 &#177; 2&#46;85&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0011"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Chronic glomerulonephritis&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0012"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">26 &#40;26&#46;00&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0013"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Diabetic nephropathy&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0014"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">18 &#40;18&#46;00&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0015"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Hypertensive nephropathy&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0016"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">14 &#40;14&#46;00&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0017"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Polycystic kidney&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0018"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">7 &#40;7&#46;00&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0019"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Chronic interstitial nephritis&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0020"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">6 &#40;6&#46;00&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0021"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Uric acid nephropathy&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0022"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">5 &#40;5&#46;00&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0023"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Obstructive nephropathy&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0024"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">4 &#40;4&#46;00&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0025"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Unknown etiology&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0026"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">20 &#40;20&#46;00&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
              "imagenFichero" => array:1 [
                0 => "xTab3711727.png"
              ]
            ]
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spara003" class="elsevierStyleSimplePara elsevierViewall">General data and medical history of patients&#46;</p>"
        ]
      ]
      3 => array:8 [
        "identificador" => "tbl0002"
        "etiqueta" => "Table 2"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "detalles" => array:1 [
          0 => array:3 [
            "identificador" => "alt0004"
            "detalle" => "Table "
            "rol" => "short"
          ]
        ]
        "tabla" => array:1 [
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><a name="en0027"></a><th class="td-with-role" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t ; entry_with_role_rowgroup " rowspan="1" align="left" valign="top" scope="col"></th><a name="en0028"></a><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="top" scope="col">CAC score&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><a name="en0029"></a><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="top" scope="col">CAC score&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><a name="en0030"></a><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="top" scope="col">CAC score&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><a name="en0031"></a><th class="td-with-role" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t ; entry_with_role_rowgroup " rowspan="1" align="left" valign="top" scope="col"></th></tr><tr title="table-row"><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><a name="en0033"></a><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="top" scope="col">0&#8210;100&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><a name="en0034"></a><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="top" scope="col">100&#8210;400&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><a name="en0035"></a><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="top" scope="col">&#62; 400&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th></tr><tr title="table-row"><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Parameters&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><a name="en0038"></a><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">&#40;n &#61; 20&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><a name="en0039"></a><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">&#40;n &#61; 25&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><a name="en0040"></a><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">&#40;n &#61; 55&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">p-value&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><a name="en0042"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">CAC score&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0043"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">48&#46;32 &#177; 18&#46;65&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0044"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">238&#46;77 &#177; 85&#46;03&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0045"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">1076&#46;84 &#177; 340&#46;59&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0046"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">&#60;0&#46;001&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0047"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Gender &#40;male&#47;female&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0048"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">11&#47;9&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0049"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">10&#47;15&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0050"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">25&#47;30&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0051"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">0&#46;600&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0052"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Age &#40;years&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0053"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">59&#46;85 &#177; 7&#46;20&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0054"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">60&#46;24 &#177; 6&#46;56&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0055"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">60&#46;67 &#177; 6&#46;98&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0056"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">0&#46;895&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0057"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">BMI &#40;kg&#47;m2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0058"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">21&#46;45 &#177; 0&#46;21&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0059"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">22&#46;30 &#177; 0&#46;16&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0060"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">23&#46;23 &#177; 0&#46;19&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0061"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">&#60;0&#46;001&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0062"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Dialysis vintage &#40;years&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0063"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">4&#46;20 &#177; 0&#46;22&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0064"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">5&#46;10 &#177; 0&#46;27&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0065"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">8&#46;50 &#177; 0&#46;25&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0066"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">&#60;0&#46;001&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0067"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Kt&#47;V&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0068"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">1&#46;28 &#177; 0&#46;04&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0069"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">1&#46;24 &#177; 0&#46;02&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0070"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">1&#46;20 &#177; 0&#46;03&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0071"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">&#60;0&#46;001&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0072"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">IMT &#40;mm&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0073"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">0&#46;76 &#177; 0&#46;06&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0074"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">0&#46;82 &#177; 0&#46;04&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0075"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">0&#46;95 &#177; 0&#46;10&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0076"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">&#60;0&#46;001&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0077"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Hb &#40;g&#47;L&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0078"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">112&#46;16 &#177; 8&#46;48&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0079"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">109&#46;94 &#177; 9&#46;17&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0080"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">107&#46;36 &#177; 9&#46;85&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0081"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">0&#46;131&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0082"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Alb &#40;g&#47;L&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0083"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">39&#46;34 &#177; 3&#46;57&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0084"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">38&#46;51 &#177; 4&#46;35&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0085"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">39&#46;08 &#177; 4&#46;74&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0086"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">0&#46;803&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><a name="en0087"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">Calcium &#40;mmoL&#47;L&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0088"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">2&#46;12 &#177; 0&#46;10&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0089"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">2&#46;09 &#177; 0&#46;11&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0090"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="" valign="top">2&#46;06 &#177; 0&#46;12&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><a name="en0091"></a><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
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                  \t\t\t\t  " align="" valign="top">Klotho &#40;pg&#47;mL&#41;&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t  " align="" valign="top">526&#46;34 &#177; 52&#46;68&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t  " align="" valign="top">Fetuin-A &#40;mg&#47;mL&#41;&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t  " align="" valign="top">MGP &#40;pg&#47;mL&#41;&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t  " align="" valign="top">170&#46;07 &#177; 17&#46;94&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t  " align="" valign="top">Klotho &#40;pg&#47;mL&#41;&nbsp;\t\t\t\t\t\t\n
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                          "autores" => array:5 [
                            0 => "YH Khan"
                            1 => "TH Mallhi"
                            2 => "A Sarriff"
                            3 => "AH Khan"
                            4 => "N&#46; Tanveer"
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                        "tituloSerie" => "J Coll Physicians Surg Pak"
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                        "volumen" => "28"
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                        "paginaFinal" => "966"
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                          "etal" => true
                          "autores" => array:6 [
                            0 => "L Zhang"
                            1 => "F Wang"
                            2 => "L Wang"
                            3 => "W Wang"
                            4 => "B Liu"
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                      "doi" => "10.1016/S0140-6736(12)60033-6"
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                        "tituloSerie" => "Lancet"
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                          "autores" => array:6 [
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                            3 => "C Yoon"
                            4 => "B Gales"
                            5 => "D Sider"
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                        "tituloSerie" => "Circulation"
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                        "numero" => "20"
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                0 => array:2 [
                  "contribucion" => array:1 [
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                      "titulo" => "Impact of high coronary artery calcification score &#40;CACS&#41; on survival in patients on chronic hemodialysis"
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                          "autores" => array:6 [
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                            2 => "M Tamashiro"
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                            4 => "N Higa"
                            5 => "T Touma"
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                      "doi" => "10.1007/s10157-003-0260-0"
                      "Revista" => array:7 [
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                        "fecha" => "2004"
                        "volumen" => "8"
                        "numero" => "1"
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Article information

ISSN: 18075932
Original language: English

DOI:10.1016/j.clinsp.2024.100417

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