Associations of Tumor Necrosis Factor–α G-308A (rs1800629) Gene Polymorphisms with Major Depressive Disorder

Abstract

Pro-inflammatory cytokine polymorphisms like Tumor Necrosis Factor- (TNF), has been found associated to severe depressive disorder (MDD). The Pro-inflammatory cytokines tumor necrosis factor (TNF-α) G-308A (rs1800629) have been discovered to have an important role in the pathophysiology of depressive disorders and the mechanism of antidepressant treatment. The present study aims to study TNF-α gene polymorphisms in Major depressive disorder using allele specific PCR. The results show that family history are non- significant different between patients and control group (0.6346) and also there was non- significant different in BMI (0.3417), The genotyping data show tow alleles and three genotyping (AG, GG, AA) the statically analysis show non-significant differences between patients and controls groups (0.095, 0.800) for GG, AA and GA respectively with more frequent of GA in patients than control group, the G allele was less frequent in patient than control while A allele was more frequent in patients than control group in significant differences (0.0001). It can be concluded that TNF genotyping didn’t impact in the Major depressive disorder but the allele distribution may have potential role in MDD patients.