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Genetic variation in S-nitrosoglutathione reductase (GSNOR) and childhood asthma.

Authors: Wu, H  Romieu, I  Sienra-Monge, JJ  Estela Del Rio-Navarro, B  Anderson, DM  Jenchura, CA  Li, H  Ramirez-Aguilar, M  Del Carmen Lara-Sanchez, I  London, SJ 
Citation: Wu H, etal., J Allergy Clin Immunol. 2007 Aug;120(2):322-8. Epub 2007 Jun 1.
Pubmed: (View Article at PubMed) PMID:17543375
DOI: Full-text: DOI:10.1016/j.jaci.2007.04.022

BACKGROUND: S-nitrosothiols are potent endogenous bronchodilators depleted in asthmatic airway lining fluid. S-nitrosoglutathione reductase (GSNOR; also known as alcohol dehydrogenase 5 or formaldehyde dehydrogenase) catalyzes the metabolism of S-nitrosoglutathione (GSNO) and controls intracellular levels of S-nitrosothiols. GSNOR knockout mice have increased lung S-nitrosothiol levels and are therefore protected from airway hyperresponsiveness after methacholine or allergen challenge. OBJECTIVE: We sought to investigate whether genetic variation in GSNOR is associated with childhood asthma and atopy. METHODS: We genotyped 5 tagging and 2 additional single nucleotide polymorphisms (SNPs) in GSNOR in 532 nuclear families consisting of asthmatic children aged 4 to 17 years and both parents in Mexico City. Atopy was determined by means of skin prick testing. RESULTS: Carrying 1 or 2 copies of the minor allele of SNP rs1,154,404 was associated with decreased risk of asthma (relative risk [RR], 0.77; 95% CI, 0.61-0.97; P = .028 for 1 copy and RR, 0.66; 95% CI, 0.44-0.99; P = .046 for 2 copies). Homozygosity for the minor allele of SNP rs28,730,619 was associated with increased risk of asthma (RR, 1.60; 95% CI, 1.13-2.26; P = .0077). Haplotype analyses supported the single SNP findings. GSNOR SNPs were not associated with the degree of atopy. CONCLUSION: This is the first study of genetic polymorphisms in GSNOR and asthma. These data suggest that genetic variation in GSNOR might play a role in asthma susceptibility. CLINICAL IMPLICATIONS: The association of GSNOR polymorphisms with asthma suggests a potential therapeutic target.

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CRRD Object Information
CRRD ID: 5128882
Created: 2011-03-22
Species: All species
Last Modified: 2011-03-22
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.