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Glucocorticoid receptor polymorphism is associated with major depression and predominance of depression in the course of bipolar disorder.

Abstract：

BACKGROUND:A strong association has been found between dysregulation of hypothalamic-pituitary-adrenal (HPA) axis and depression and bipolar disorder. Glucocorticoid receptor is one of the involved receptors and its gene has been recognized as a candidate gene for major depressive disorder and bipolar disorder. Therefore, we investigated if polymorphism of the glucocorticoid receptor gene (NR3C1), involved in the regulation of HPA axis, may alter susceptibility as well as the course of major depressive disorder and bipolar disorder. METHODS:In the study we included 514 patients with bipolar disorder and 193 patients with major depressive disorder. Consensus diagnosis by at least two psychiatrists was made, according to DSM-IV (Diagnostic and Statistical Manual of Mental Disorders) criteria, using SCID (Structured Clinical Interview for DSM Disorders). Control group consisted of 732 healthy subjects. Genotyping for eight NR3C1 polymorphisms was done with use of TaqMan SNP (single nucleotide polymorphism) Genotyping Assays. Linkage disequilibrium analysis was done in Haploview. RESULTS:We have found three polymorphisms (rs6198, rs6191 and rs33388) to be associated with major depressive disorder (MDD) and the same polymorphisms were associated with the predominance of depressive symptoms in the course of bipolar disorder. In linkage disequilibrium analysis we observed two haplotype blocks, however, none of those shows involvement in susceptibility to MDD or bipolar disorder. LIMITATIONS:The main limitation of this study is relatively small sample size of MDD patients group. CONCLUSIONS:Polymorphisms of NR3C1 gene analyzed in this study may modify susceptibility to major depressive disorder and seem to influence the course of bipolar disorder.

journal_name

J Affect Disord

journal_title

Journal of affective disorders

authors

Szczepankiewicz A,Leszczyńska-Rodziewicz A,Pawlak J,Rajewska-Rager A,Dmitrzak-Weglarz M,Wilkosc M,Skibinska M,Hauser J

doi

10.1016/j.jad.2011.06.020

subject

Has Abstract

pub_date

2011-11-01 00:00:00

pages

138-44

issue

1-3

eissn

0165-0327

issn

1573-2517

pii

S0165-0327(11)00339-9

journal_volume

134

pub_type

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Glucocorticoid receptor polymorphism is associated with major depression and predominance of depression in the course of bipolar disorder.