title: Polymorphisms of microsomal epoxide hydrolase and glutathione S-transferase P1 in a male Turkish population.
abstract: Polymorphic genes encoding drug-metabolizing enzymes may account for interindividual differences in certain types of diseases especially cancer. In this study, microsomal epoxide hydrolase (EPHX1) and glutathione S-transferase P1 (GSTP1) gene polymorphisms were determined among 133 healthy males of a Turkish population. Frequencies of EPHX1 and GSTP1 gene polymorphisms were determined by using the polymerase chain reaction-restriction fragment length polymorphism (PCR/RFLP) method. The observed genotype frequencies of EPHX1 exon 3 were Tyr113Tyr:50.4%, Tyr113His: 42.1%, His113His: 7.5% and EPHX1 exon 4 were His139His: 69.2%, His139Arg: 28.6%, Arg133Arg: 2.2%. GSTP1 exon 5 genotype frequencies were Ile105Ile: 58.7%, Ile105Val: 35.3%, Val105Val: 6.0% and GSTP1 exon 6 genotype frequencies were Ala114Ala: 85.0%, Ala114Val: 14.3%, Val114Val: 0.7%. These results reveal that the frequencies of EPHX1 and GSTP1gene polymorphisms in a small sampling of males within a Turkish population are similar to European Caucasian populations.
authors: Department of Toxicology, School of Pharmacy, Ankara University, Ankara, Turkey. ada@pharmacy.ankara.edu.tr
authors: Ahmet O
authors: AO
authors: Ada
authors: H Sinan
authors: HS
authors: Suzen
authors: Mumtaz
authors: M
authors: Iscan
mesh_terms: D000328:Adult; D004851:Epoxide Hydrolases / Q000235:genetics*; D005091:Exons / Q000235:genetics; D005838:Genotype; D051549:Glutathione S-Transferase pi / Q000235:genetics*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D014421:Turkey
chemical_list: D051549:Glutathione S-Transferase pi; D004851:Epoxide Hydrolases