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Inicio Psiquiatría Biológica Investigation of the functional vesicular monoamine transporter 1 (VMAT1/SLC18A1...
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Vol. 29. Issue 2.
(May - August 2022)
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Vol. 29. Issue 2.
(May - August 2022)
Revisión
Investigation of the functional vesicular monoamine transporter 1 (VMAT1/SLC18A1) Thr136Ile gene variant in bipolar disorder
Estudio de la variante Thr136Ile del gen transportador 1 vesicular de monoaminas (VMAT1/SLC18A1) en el trastorno bipolar
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Zeynep Yegina,
Corresponding author
zyegin@sinop.edu.tr

Corresponding author.
, Gokhan Sarisoyb, Ayse Erguner Aralb, Haydar Kocc
a Medical Laboratory Techniques Program, Vocational School of Health Services, Sinop University, Sinop, Turkey
b Department of Psychiatry, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
c Department of Statistics, Faculty of Science, Cankiri Karatekin University, Cankiri, Turkey
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Abstract
Background and objectives

Bipolar disorder (BD) is an episodic and recurrent mood disturbance ranging from mania to severe depression. Because of the heterogeneity of psychiatric disorders, enlightening the possible molecular risk drivers is crucial. Vesicular monoamine transporter 1 (VMAT1) is an important candidate gene to study the underlying molecular mechanisms in BD pathogenesis since it has a significant role in the packaging of monoaminergic neurotransmitters into presynaptic storage vesicles. The aim of this study was to ascertain whether functional and evolutionarily important variant of VMAT1 gene (Thr136Ile (rs1390938)) would affect the susceptibility of the individuals to BD in a Turkish population.

Method

One hundred twenty BD patients and one hundred one healthy control individuals were recruited for the study. Samples were genotyped using PCR-RFLP method to detect VMAT1 gene variant (Thr136Ile (rs1390938)).

Results

Contrary to our expectations, VMAT1 Thr136Ile (rs1390938) gene variant was not associated with BD in our population. There was also no relationship between VMAT1 genotypes and some clinically significant parameters in BD patients.

Conclusion

Our data showed no association between VMAT1 Thr136Ile (rs1390938) and BD in Turkish population. We strongly recommend the analysis of this variant in other populations to draw a precise conclusion about the role of this variant in bipolar disorder. Further large-scale research for the other variants of VMAT1 is also required to clarify the strong hypothesis focused on VMAT1 variants in the development of neuropsychiatric disorders.

Keywords:
Bipolar disorder
VMAT1 gene
rs1390938
Molecular psychiatry
Abbreviations:
BD
VMAT1
DSM-V
PCR-RFLP
PDs
PTSD
STAI
CIWA-Ar
Resumen
Antecedentes y Objetivos

El trastorno bipolar (TB) es una alteración del ánimo episódica y recurrente, que fluctúa entre la manía y la depresión severa. Debido a la heterogeneidad de los trastornos psiquiátricos, es esencial esclarecer los posibles impulsores del riesgo molecular. El transportador 1 vesicular de monoaminas (VMAT1) es un importante gen candidato para estudiar los mecanismos moleculares subyacentes en la patogenia del TB, dado que tiene un rol significativo de embalaje de los neurotransmisores monoaminérgicos en las vesículas de almacenaje presinápticas. El objetivo de este estudio fue comprobar si la variante funcional y evolutivamente importante del gen VMAT1 (Thr136Ile (rs1390938)) afectaría a la susceptibilidad de los individuos relativa a TB en una población turca.

Método

Se seleccionaron para el estudio ciento veinte pacientes con TB y ciento un individuos sanos. Se genotipificaron las muestras mediante el método PCR-RFLP, para detectar la variante del gen VMAT1 (Thr136Ile (rs1390938)).

Resultados

Contrariamente a nuestras expectativas, la variante del gen VMAT1 (Thr136Ile (rs1390938)) no estuvo asociada al TB en nuestra población. Tampoco se encontró relación entre los genotipos de VMAT1 y algunos parámetros clínicamente significativos de los pacientes de TB.

Conclusión

Nuestros datos no reflejaron asociación ninguna entre la variante Thr136Ile (rs1390938) de VMAT1 y el TB en la población turca. Recomendamos encarecidamente el análisis de esta variante en otras poblaciones, para obtener una conclusión precisa sobre el rol de la misma en el trastorno bipolar. También son necesarios más estudios a gran escala sobre las demás variantes de VMAT1 para esclarecer la sólida hipótesis centrada en las variantes de VAT1, en cuanto al desarrollo de trastornos neuropsiquiátricos.

Palabras clave:
Trastorno bipolar
Gen VMAT1
rs1390938
Psiquiatría molecular

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