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Impact of glutathione-S-transferase gene polymorphisms on enzyme activity, lung function and bronchial asthma susceptibility in Egyptian children
Faculty
Medicine
Year:
2012
Type of Publication:
Article
Pages:
314-319
Authors:
El-Shal, Amal S, Karam, Rehab A, Pasha, Heba F, Rahman, Hadeel M. A, Gad, Doaa M
DOI:
10.1016/j.gene.2012.01.059
Journal:
GENE ELSEVIER SCIENCE BV
Volume:
497
Research Area:
Genetics \& Heredity
ISSN
ISI:000302584300026
Keywords :
Asthma, Egyptian children, Enzyme activity, Glutathione-S-transferase, Polymerase chain reaction
Abstract:
Background: Asthma is a complex multifactorial disease with an obvious genetic predisposition. Polymorphisms of the glutathione-S-transferase (GST) genes are known risk factors for some environmentally-related diseases. The aim of the present study was to investigate the role of polymorphisms in the GSTT1, GSTM1 and GSTP1 genes and asthma susceptibility in Egyptian children, and to analyze their effect on GST activity and lung function. Methods: GSTT1 and GSTM1 gene polymorphism was genotyped using the multiplex polymerase chain reaction (PCR) and GSTP1 ILe105Val polymorphism was determined using PCR-restriction fragment length polymorphism (PCR-RFLP) in 168 healthy and 126 asthmatic children (82 atopic and 44 nonatopic). Also GST enzyme activity and lung function were evaluated. Results: Asthmatic children had a significant higher prevalence of the GSTM1 null (P = 0.003) and significant lower prevalence of GSTP1 Val/Val genotypes (P = 0.02) than control group. Lung function was significantly decreased in GSTM1 null genotype and GSTP1 Ile/Ile genotype. GSTP1 Val/Val genotypes and GSTM1 null genotype had a significant decrease in plasma GST activity. Conclusions: GST genes polymorphisms may play an important role in pathogenesis and susceptibility to asthma in children. (C) 2012 Elsevier B.V. All rights reserved.
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