Polymorphisms of GSTP1 and GSTT1, but not of CYP2A6, CYP2E1 or GSTM1, modify the risk for esophageal cancer in a western population.

Polymorphisms of GSTP1 and GSTT1, but not of CYP2A6, CYP2E1 or GSTM1, modify the risk for esophageal cancer in a western population. Research Abstract Details 

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Polymorphisms of GSTP1 and GSTT1, but not of CYP2A6, CYP2E1 or GSTM1, modify the risk for esophageal cancer in a western population. Abstract Text:

A Rossini,D C M Rapozo,S C Soares Lima,D P ,M A Ferreira,R Teixeira,C D P Kruel,S G S Barros,N A Andreollo,R ,H J Matos,R M Albano,L F Ribeiro Pinto,A Rossini,D C M Rapozo,S C Soares Lima,D P ,M A Ferreira,R Teixeira,C D P Kruel,S G S Barros,N A Andreollo,R ,H J Matos,R M Albano,L F Ribeiro Pinto,

Esophageal cancer is among the most common and fatal tumors in the world. Eighty percent of esophageal tumors are esophageal squamous cell carcinoma (ESCC). Brazil is one of the high incidence areas in the West, where tobacco and alcohol consumption have been associated with ESCC. However, polymorphisms in xenobiotic metabolizing genes may also contribute to the risk. Therefore, in this study, we analyzed the risk of ESCC associated with tobacco and alcohol consumption and with polymorphisms of CYP2A6 (CYP2A6*2), CYP2E1 (CYP2E1*5B, CYP2E1*6), GSTP1 (Ile105Val), GSTM1 and GSTT1 null genotypes in 126 cases and 252 age- and gender-matched controls. Data on the amount, length and type of tobacco and alcohol consumed were collected, and DNA was extracted from blood lymphocytes from all individuals. Polymorphisms were analyzed by polymerase chain reaction (PCR)-multiplex (GSTM1 and T1), PCR-Restriction Fragment Length Polymorphism (CYP2E1*5B and *6 and GSTP1 Ile105Val) or allele-specific PCR amplification (CYP2A6*2). Risks were evaluated by multivariate conditional regression analysis. As expected, tobacco [odds ratio (OR) = 6.71, 95% confidence interval (95% CI) 3.08-14.63] and alcohol (OR = 16.98, CI 7.8-36.98) consumption, independently or together (OR = 26.91, CI 13.39-54.05) were risk factors. GSTP1 Ile105Val polymorphism was an independent risk factor (OR = 2.12, CI 1.37-3.29), whereas GSTT1 wild-type was an independent protective factor for ESCC (OR = 0.37, CI 0.16-0.79). There was approximately 80% statistical power to detect both results. There was no risk associated with CYP2A6, CYP2E1 and GSTM1 polymorphisms. In conclusion, this study suggests an opposite role of GSTP1 and GSTT1 polymorphisms for the risk for ESCC.

Polymorphisms of GSTP1 and GSTT1, but not of CYP2A6, CYP2E1 or GSTM1, modify the risk for esophageal cancer in a western population. Publishing Authors By Initials

A Rossini,DC Rapozo,SC Soares Lima,DP ,MA Ferreira,R Teixeira,CD Kruel,SG Barros,NA Andreollo,R ,HJ Matos,RM Albano,LF Pinto,A Rossini,DC Rapozo,SC Soares Lima,DP ,MA Ferreira,R Teixeira,CD Kruel,SG Barros,NA Andreollo,R ,HJ Matos,RM Albano,LF Pinto,

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Polymorphisms of GSTP1 and GSTT1, but not of CYP2A6, CYP2E1 or GSTM1, modify the risk for esophageal cancer in a western population. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Carcinogenesis

VOLUME: 28

Page Numbers: 2537-42

Journal Abbreviation: Carcinogenesis

ISSN: 1460-2180

DAY: 4

MONTH: 10

YEAR: 2007

Polymorphisms of GSTP1 and GSTT1, but not of CYP2A6, CYP2E1 or GSTM1, modify the risk for esophageal cancer in a western population. Information

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LANGUAGE: eng

NlmUniqueID: 8008055

Polymorphisms of GSTP1 and GSTT1, but not of CYP2A6, CYP2E1 or GSTM1, modify the risk for esophageal cancer in a western population. Keywords Mesh Terms:

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AFFILIATION: Departamento de Bioquímica, IBRAG, Universidade do Estado do Rio de Janeiro, RJ 20551-013, Brasil.

Country: England

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MEDLINETA: Carcinogenesis

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