Polimorfismos en los genes de desintoxicación CYP1A1, CYP2E1, GSTT1 y GSTM1 en la susceptibilidad al cáncer gástrico / Polymorphisms in detoxification genes CYP1A1, CYP2E1, GSTT1 and GSTM1 in gastric cancer susceptibility
Rev. biol. trop
; 52(3): 591-600, sept. 2004. tab
Artigo
em Espanhol
| LILACS
| ID: lil-501721
Biblioteca responsável:
BR1.1
ABSTRACT
Cytochrome P450 (CYP) and glutathione S-transferase (GST) enzymes are involved in activation and detoxification of many potential carcinogens. Genetic polymorphisms in those enzymes have been found to influence the interindividual susceptibility to cancer. Some polymorphisms of those enzymes have been associated specifically with susceptibility to gastric cancer. We conducted a study in a Costa Rican population, where gastric cancer incidence and mortality rates are among the highest in the world. We investigated whether such variations affected the risk of developing gastric cancer. Subjects included 31 with gastric cancer, 58 controls with gastric injures others than cancer and 51 normal controls confirmed by X-rays (double-contrast) or endoscopic diagnostic. DNA from peripheral white blood cell was obtained from all subjects. Deletion of GSTT1 and GSTM1 was assessed by multiplex PCR and genotyping of CYP2E1 was performed using a PCR-based restriction fragment length polymorphism assay with the restriction enzyme PstI and the gene CYP1A1 using the restriction enzyme MspI The prevalence of CYP1A1 Msp1 polymorphism, GSTT1 and GSTM1 null genotype was similar in the three groups of individuals (p = 0.73, p = 0.88 y p = 0.89 respectively). Our findings suggest that the polymorphism CYP2E1 PstI could be associated with a reduced risk of having gastric cancer (OR = 0.09, IC95%0.01 - 0.83).
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Contexto em Saúde:
ODS3 - Meta 3.4 Reduzir as mortes prematuras devido doenças não transmissíveis
Problema de saúde:
Doenças do Sistema Digestório
/
Neoplasia do Estômago
Base de dados:
LILACS
Assunto principal:
Polimorfismo Genético
/
Neoplasias Gástricas
/
Hidrocarboneto de Aril Hidroxilases
/
Alquil e Aril Transferases
Tipo de estudo:
Estudo de etiologia
/
Estudo observacional
/
Fatores de risco
Limite:
Adolescente
/
Adulto
/
Idoso
/
Idoso, 80 anos ou mais
/
Feminino
/
Humanos
/
Masculino
Idioma:
Espanhol
Revista:
Rev. biol. trop
Assunto da revista:
Biologia
/
Medicina Tropical
Ano de publicação:
2004
Tipo de documento:
Artigo
País de afiliação:
Costa Rica
Instituição/País de afiliação:
Universidad de Costa Rica/CR