Hemmingsen, A, Fryer, AA, Hepple, M, Strange, RC and Spiteri, MA (2001) Simultaneous identification of GSTP1 Ile105-->Val105 and Ala114-->Val114 substitutions using an amplification refractory mutation system polymerase chain reaction assay: studies in patients with asthma. Respiratory Research, 2 (4). 255 -260. ISSN 1465-993X

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Simultaneous identification of GSTP1 Ile105-->Val105 and Ala114-->Val114 substitutions using an amplification refractory mutation system polymerase chain reaction assay: studies in patients with asthma.pdf - Published Version
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Abstract

BACKGROUND
The glutathione S-transferase (GST) enzyme GSTP1 utilizes byproducts of oxidative stress. We previously showed that alleles of GSTP1 that encode the Ile105-->Val105 substitution are associated with the asthma phenotypes of atopy and bronchial hyperresponsiveness (BHR). However, a further polymorphic site (Ala114-->Val114) has been identified that results in the following alleles: GSTP1*A (wild-type Ile105-->Ala114), GSTP1*B (Val105-->Ala114), GSTP1*C (Val105-->Val114) and GSTP1*D (Ile105-->Val114).

METHODS
Because full identification of GSTP1 alleles may identify stronger links with asthma phenotypes, we describe an amplification refractory mutation system (ARMS) assay that allows identification of all genotypes. We explored whether the GSTP1 substitutions influence susceptibility to asthma, atopy and BHR.

RESULTS
Among 191 atopic nonasthmatic, atopic asthmatic and nonatopic nonasthmatic individuals, none had the BD, CD, or DD genotypes. GSTP1 BC was significantly associated with reduced risk for atopy (P = 0.031). Compared with AA, trend test analysis identified a significant decrease in the frequency of GSTP1 BC with increasing severity of BHR (P = 0.031). Similarly, the frequency of GSTP1 AA increased with increasing BHR.

CONCLUSION: These data suggest that GSTP1*B and possibly GSTP1*C are protective against asthma and related phenotypes.

Item Type: Article
Additional Information: This is the final published version of the article (version of record). It first appeared online via BioMed Central at http://doi.org/10.1186/rr64 - please refer to any applicable terms of use of the publisher.
Uncontrolled Keywords: Adult, Asthma, Female, Genotype, Glutathione S-Transferase pi, Glutathione Transferase, Humans, Immunoglobulin E, Isoenzymes, Male, Middle Aged, Point Mutation, Polymerase Chain Reaction
Subjects: R Medicine > R Medicine (General)
Divisions: Faculty of Medicine and Health Sciences > Institute for Science and Technology in Medicine
Related URLs:
Depositing User: Symplectic
Date Deposited: 12 Feb 2019 15:20
Last Modified: 12 Feb 2019 15:23
URI: http://eprints.keele.ac.uk/id/eprint/5824

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