Document Detail

Association between the functional polymorphism (C3435T) of the gene encoding P-glycoprotein (ABCB1) and major depressive disorder in the Japanese population.
MedLine Citation:
PMID:  22306099     Owner:  NLM     Status:  Publisher    
Human P-glycoprotein (P-gp), which is encoded by ABCB1 (ATP-binding cassette, sub-family B member 1), is expressed in the blood brain barrier and protects the brain from many kinds of drugs and toxins including glucocorticoids by acting as an efflux pump. We examined whether functional polymorphisms of ABCB1 give susceptibility to major depressive disorder (MDD). The five functional single nucleotide polymorphisms (SNPs), A-41G (rs2188524), T-129C (rs3213619), C1236T (Gly412Gly: rs1128503), G2677A/T (Ala893Ser/Thr: rs2032582), and C3435T (Ile1145Ile: rs1045642) were genotyped in 631 MDD patients and 1100 controls in the Japanese population. A tri-allelic SNP, G2677A/T, was genotyped by pyrosequencing and the remaining SNPs were genotyped by the TaqMan 5'-exonuclease allelic discrimination assay. The minor T3435 allele was significantly increased in MDD patients than in the controls (χ(2) = 4.5, df = 1, p = 0.034, odds ratio [OR] 1.16, 95% confidential interval [CI] 1.01-1.34). Homozygotes for the T3435 allele was significantly more common in patients than in the controls (χ(2) = 7.5, df = 1, p = 0.0062, OR 1.43, 95%CI 1.11-1.85). With respect to the other 4 SNPs, there was no significant difference in genotype or allele distribution. In the haplotype-based analysis, the proportion of individuals with the TT1236-TT3435 haploid genotype was significantly increased in patients than in controls (χ(2) = 8.5, df = 1, p = 0.0037, OR 1.50, 95%CI 1.14-1.98). Our results suggest that the T3435 allele or carrying two copies of this allele confers susceptibility to MDD in the Japanese population.
Takashi Fujii; Miho Ota; Hiroaki Hori; Daimei Sasayama; Kotaro Hattori; Toshiya Teraishi; Noriko Yamamoto; Miyako Hashikura; Masahiko Tatsumi; Teruhiko Higuchi; Hiroshi Kunugi
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-2-3
Journal Detail:
Title:  Journal of psychiatric research     Volume:  -     ISSN:  1879-1379     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-2-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376331     Medline TA:  J Psychiatr Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1, Ogawahigashi, Kodaira, Tokyo 187 8502, Japan.
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