نتایج جستجو برای: null genotype

تعداد نتایج: 136240  

2011
Auta Viviane Rocha Teddy Talbot Thiago Magalhães da Silva Maria Clarinda Almeida Carlos Alberto Menezes Giuliano Di Pietro Fabrício Rios-Santos

PURPOSE To investigate the association of glutathione S-transferase (GST) GSTM1, GSTT1, and GSTP1 genes with the risk of primary open angle glaucoma (POAG) and clinical features of the disease. METHODS We conducted a case-control study that included 87 Brazilian patients with POAG and 85 healthy controls matched for age, ethnicity, and sex, whose blood samples were genotyped for polymorphisms...

Journal: :Asian Pacific journal of cancer prevention : APJCP 2013
Jin-Mei Piao Min-Ho Shin Hee Nam Kim Lian-Hua Cui Hye-Rim Song Sun-Seog Kweon Jin-Su Choi Young-Chul Kim In-Jae Oh Kyu-Sik Kim

PURPOSE The aim of this study was to evaluate any association of GSTM1 and GSTT1 null genotypes with the risk of lung cancer in a South Korean population. METHODS We conducted a large-scale, population-based case-control study including 3,933 lung cancer cases and 1,699 controls. Genotypes of GSTM1 and GSTT1 were determined using real-time polymerase chain reaction. RESULTS In logistic regr...

Journal: :Journal of the Egyptian National Cancer Institute 2006
Ghada I Mossallam Thoraya M Abdel Hamid Mohamed A Samra

BACKGROUND AND PURPOSE Heterogeneity in patient' s response to chemotherapy is consistently observed across populations. Pharmacogenomics, the study of inherited differences in drug disposition and effects, is emerging as a tool to predict efficacy and toxicity of drugs. Glutathione S-transferases (GST) are involved in the metabolism and detoxification of environmental carcinogens and some clas...

Journal: :Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 2001
M T Goodman K McDuffie C Guo K Terada T A Donlon

Introduction Long-term differences in steroid hormone levels between women likely contribute to the interindividual variation in ovarian cancer risk, although the precise biological mechanisms are unclear (1). The P450c17a (CYP17) gene codes for 17ahydroxylase and 17,20 lyase which catalyze the rate-limiting step in androgen biosynthesis, cleaving the C21 steroids to the C19 steroids, androsten...

Journal: :The Journal of biological chemistry 2004
Tami L Thomae Edward Glover Christopher A Bradfield

The aryl hydrocarbon receptor (encoded by the Ahr locus) is a ligand-activated transcription factor that mediates the toxicology and teratology of 2,3,7,8-tetrachlorodibenzo-p-dioxin (dioxin). In an effort to understand the role of the maternal compartment in dioxin teratology, we designed a breeding strategy that allowed us to compare the teratogenic response in embryos from Ahr(-/-) (null) an...

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