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The C825T Polymorphism of the G-Protein β3 Gene as a Risk Factor for Depression: A Meta-Analysis

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  • Liang Fang
  • Chanjuan Zhou
  • Shunjie Bai
  • Chenglong Huang
  • Junxi Pan
  • Ling Wang
  • Xinfa Wang
  • Qiang Mao
  • Lu Sun
  • Peng Xie

Abstract

Background: TheG-protein β3 gene (GNβ3) has been implicated in psychiatric illness through its effects upon intracellular transduction of several neurotransmitter receptors. Multiple studies have investigated the relationship of the C825T polymorphism of the GNβ3 gene (GNβ3 C825T) to depression and antidepressant response. However, the relationship between GNβ3 C825T and depression remains inconsistent. Therefore, here we performed a meta-analysis to investigate the role of GNβ3 C825Tin depression risk. Methods: Published case-control studies examining the association between GNβ3 C825T and depression were systematically searched for through several electronic databases (PubMed, Scopus, Science Direct, Springer, Embase, psyINFO, and CNKI). The association between GNβ3 C825T and depression risk were assessed by odd ratios (ORs) and their 95% confidence intervals (CIs) for each study. Pooled ORs were constructed for allele contrast (C versus T), homozygote (CC versus TT) model, heterozygote (CC versus CT) model, dominant model (CC + CT versus TT), and recessive (CC versus TT+CT) model. In order to evaluate possible biases, a sensitivity analysis was conducted by sequential deletion of individual studies in an attempt to assess the contribution of each individual dataset to the pooled OR. Results: Nine studies, including 1055 depressed patients and 1325 healthy controls, were included. A significant association between GNβ3 C825Tand depression was found to exist, suggesting that the T-allele of GNβ3 C825Tcan increase susceptibility to depression. After stratification by ethnicity, the same association was found in the Asian subpopulation, but not the Caucasian subpopulation. Conclusions: This is the first meta-analysis to reveal a relationship between GNβ3 C825T and depression. Asian T-allele carriers of GNβ3 C825T appear to be more susceptible to depression.

Suggested Citation

  • Liang Fang & Chanjuan Zhou & Shunjie Bai & Chenglong Huang & Junxi Pan & Ling Wang & Xinfa Wang & Qiang Mao & Lu Sun & Peng Xie, 2015. "The C825T Polymorphism of the G-Protein β3 Gene as a Risk Factor for Depression: A Meta-Analysis," PLOS ONE, Public Library of Science, vol. 10(7), pages 1-11, July.
  • Handle: RePEc:plo:pone00:0132274
    DOI: 10.1371/journal.pone.0132274
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    1. Ka Young Chung & Søren G. F. Rasmussen & Tong Liu & Sheng Li & Brian T. DeVree & Pil Seok Chae & Diane Calinski & Brian K. Kobilka & Virgil L. Woods & Roger K. Sunahara, 2011. "Conformational changes in the G protein Gs induced by the β2 adrenergic receptor," Nature, Nature, vol. 477(7366), pages 611-615, September.
    2. Jason S. Snyder & Amélie Soumier & Michelle Brewer & James Pickel & Heather A. Cameron, 2011. "Adult hippocampal neurogenesis buffers stress responses and depressive behaviour," Nature, Nature, vol. 476(7361), pages 458-461, August.
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