Journal
GENETICS AND MOLECULAR RESEARCH
Volume 9, Issue 1, Pages 539-544Publisher
FUNPEC-EDITORA
DOI: 10.4238/vol9-1gmr753
Keywords
Glioma; Gluthatione S-transferase; Genetic polymorphisms
Funding
- Fundacao Oswaldo Cruz (FIOCRUZ - Rio de Janeiro)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq - Brasilia)
- Instituto Nacional do Cancer (INCA - Rio de Janeiro)
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The glutathione S-transferases (GSTs), a family of phase II isozymes, detoxify several carcinogens. Genetic variations in GSTs have been associated with increased risk for cancer due to a heritable deficiency in detoxification pathways for environmental carcinogens. Conflicting findings have been reported about the association between constitutive GST polymorphisms and gliomas in different populations. The present case-control study examined 78 patients with primary glioma and 347 controls from Rio de Janeiro. DNA was isolated from whole blood, and four genetic polymorphisms (GSTM1, GSTM3, GSTT1, and GSTP1) were determined by PCR-RFLP. The distributions of the genotypic frequencies of these polymorphisms did not differ significantly between cases and controls and were as expected by Hardy-Weinberg equilibrium (P > 0.05). Risk analysis did not show an association between GSTs and primary glioma, suggesting that these polymorphisms do not influence the risk of primary glioma, at least in this population in Rio de Janeiro, Brazil.
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