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Polymorphism in Cytochrome P450 2D6, Glutathione S-Transferases Pi 1 Genes, and Organochlorine Pesticides in Alzheimer Disease: A Case-Control Study in North Indian Population.

Authors: Singh, NK  Banerjee, BD  Bala, K  Basu, M  Chhillar, N 
Citation: Singh NK, etal., J Geriatr Psychiatry Neurol. 2014 Feb 28;27(2):119-127.
Pubmed: (View Article at PubMed) PMID:24584466
DOI: Full-text: DOI:10.1177/0891988714522698

OBJECTIVES: It has been assumed that the association between Alzheimer disease (AD) and pesticides may be stronger among genetically susceptible individuals. The aim of the study was to examine the genetic polymorphism in cytochrome P450 2D6 (CYP2D6) and glutathione S-transferases pi 1 (GSTP1) with respect to organochlorine pesticides (OCPs) and metals in AD. METHODS: This study included 100 patients with AD and 100 age-matched controls. The genetic polymorphisms were analyzed by restriction fragment length polymorphism. The OCPs and serum metal levels were determined using gas chromatography and an autoanalyzer, respectively. RESULTS: We found a statistically significant association between AD and high levels of beta-hexachlorocyclohexane (beta-HCH; odds ratio [OR] = 2.064, 95% confidence intervals [95% CIs] = 1.373-3.102, dieldrin [OR = 2.086, 95% CI = 1.224-3.555], and copper [OR = 1.038, 95% CI = 1.012-1.064). The significant low level of magnesium (OR = 0.151, 95% CI = 0.047-0.489) even appears to have a protective role against AD. The GSTP1*B (P = .009) and GSTP1*C (P = .011) allelic variants were associated with increase in AD risk. CONCLUSION: This study demonstrates that the GSTP1*B and *C allelic variants may be considered a candidate gene for AD. It can be suggested that although CYP2D6*4 polymorphism is not a risk of AD, the CYP2D6*4 and GSTP1 polymorphism may interact with beta-HCH, dieldrin, and copper to influence the risk of AD.

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CRRD Object Information
CRRD ID: 10401912
Created: 2015-10-09
Species: All species
Last Modified: 2015-10-09
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.