Estudiar la prevalencia de anticuerpos antifosfolipidicos y analizar su relacion con laprogresion de la hepatitis cronica por virus C.
MetodosSe incluyen 128 pacientes con hepatopatia cronica por VHC (edad 46 [14] anos, 70 varones),no tratados con interferon y un grupo control sano de 93 personas. Analizamos los factores deriesgo, la duracion de la enfermedad, el consumo de alcohol, la cifra de plaquetas, ALT, ARN delVHC en suero e higado y anticuerpos antinucleares, el grado de inflamacion y el estadio de fibrosisen la biopsia hepatica, el estadio de Child-Pugh, la existencia de hipertension portal y descompensacionesprevias. Estudiamos la presencia de anticoagulante lupico y anticuerpos anticardiolipina(ACA) IgG e IgM. En los pacientes con anticuerpos anticardiolipina positivos se detecto la presenciade anti-β2 glucoproteina I mediante ELISA.
ResultadosPresentaron anticuerpos antifosfolipidicos positivos 31/128 (25%; intervalo de confianza[IC] del 95%: 17,8–33,4). La prevalencia de anticuerpos anticardiolipina IgG fue significativamentemayor en pacientes (22%) que en controles 3/93 (3,2%), p < 0,05; en cambio, no encontramosdiferencias en la prevalencia de anticuerpos anticardiolipina IgM ni de anticoagulante lupico.No encontramos diferencias en las cifras de ALT, viremia, carga viral en higado, plaquetas o ANA enlos pacientes con anticuerpos anticardiolipina IgG o sin ellos, tampoco apreciamos relacion con laedad, la duracion de la infeccion, el consumo de alcohol ni los factores de riesgo. En 4 de 44 pacientes(9%, IC del 95%: 2,5–21,7) con fibrosis F1, en 7 de 39 (18%; IC del 95%: 7,5–33,5) conF2 y en 17 de 45 (38%; IC del 95%: 23,8–53,5) con cirrosis encontramos anticuerpos anticardiolipinaIgG positivo (p < 0,005). La presencia de ACA IgG se relaciono de forma significativa con laexistencia de hipertension portal, de disfuncion hepatica y antecedentes de descompensacion. En10 de 23 pacientes (43,5%; IC del 95%: 23,2–65,5) con ACA positivo se detectaron anticuerposanti-β2 glucoproteina I.
ConclusionesLa cuarta parte de los pacientes con hepatitis cronica por VHC presentan anticuerposantifosfolipidicos. Estos anticuerpos podrian estar implicados en la progresion de la enfermedad.
BackgroundTo know the prevalence of antiphospholipid antibodies in chronic hepatitis C and theirrelationship with disease progression.
MethodsOne hundred and twenty-eight patients with chronic hepatitis C and 93 healthy controlswere enrolled up. We determined platelets, ALT, γGT, RNAHCV in serum and liver and non-organspecific antibodies, grade and stage in liver biopsy, risk factors, duration of disease and alcohol intakewere also included. Portal hypertension and liver function parameters were studied. Antiphospholipidantibodies (APA): lupus anticoagulant (LA) and anticardiolipin antibodies (ACA) (IgGand IgM) were measured by EIA. Anti-β2 glycoprotein I antibodies were also detected by EIA inACA positive patients.
ResultsThirty one out of 128 (25%; 95%CI: 17.8%–33.4%) showed positive antiphospholipid antibodies.Positive ACA-IgG was higher in patients than controls (22% vs 3.2%; p < 0.05), whereas,ACA-IgM was similar (5% vs 3.2%; p = NS), and LA was absent in both groups. ALT levels, viraemia,viral load in liver, platelets, or ANA titre were similar in patients with and without positiveACA-IgG. Risk factors, duration of disease or alcohol intake were not related yet. Patients with stagingF1 showed positive ACA-IgG 4 of 44 (9%; 95%CI: 2.5%–21.7%), in staging F2 7 of 39 (18%;95%CI: 7.5%–33.5%) and in staging F4 17 of 45 (38%; 95%CI: 23.8%–53.5%; p < 0.005).ACA-IgG was significantly related to portal hypertension, Child-Pugh stage and presence of cirrhosiscomplications. Anti-β2 glycoprotein I antibodies were detected in ten (43.5%; CI95%: 23.2%–65.5%) out of 23 ACA positive patients.
ConclusionsACA-IgG seems to be associated with chronic hepatitis C, and could play a potentialrole in fibrosis progression and liver disease in these patients.