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The Effect of the CYP1A1*2A Allele on Colorectal Cancer Susceptibility in a British Population
被引:4
|作者:
Oztas, Ezgi
[1
]
Ozhan, Gul
[1
]
Daly, Ann K.
[2
]
机构:
[1] Istanbul Univ, Fac Pharm, Dept Pharmaceut Toxicol, TR-34116 Istanbul, Turkey
[2] Newcastle Univ, Inst Cellular Med, Newcastle Upon Tyne, Tyne & Wear, England
关键词:
GENETIC POLYMORPHISMS;
CIGARETTE-SMOKING;
RISK-FACTORS;
CYP1A1;
METABOLISM;
ENZYMES;
DIETARY;
COLON;
GSTM1;
D O I:
10.1089/gtmb.2016.0099
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
Aim: Colorectal cancer (CRC) is a major health problem despite recent improvements in overall survival rates. Genetic polymorphisms affecting carcinogen biotransformation or DNA repair play pivotal roles in the carcinogenesis process. CYP1A1*2A (6235 T/C, rs4646903, Mspl) is thought to be associated with an increased risk of CRC because of its role in metabolic activation of polycyclic aromatic hydrocarbons; however, the results of previous studies are conflicting. In this study, a possible association between the CYP1A1*2A allele and CRC and the effect of cigarette smoking on this risk were examined in a British population. Material and Methods: A prospective case control study including 200 cases and 254 age-and-sex-matched controls was conducted with British participants from the north-east of England. Genotyping of the CYP1A1*2A allele was performed using the polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) method. Results: CYP1A1*2A was not associated with CRC development (OR = 1.566; 95% confidence interval [CI] = 0.90-2.73; p = 0.12). However, it was observed that C allele-carrying individuals who had smoked within the past 5 years had a significant risk of CRC (OR = 2.28; 95% CI = 1.07-4.86; p = 0.043). Conclusion: These data are of interest in understanding CRC etiology and identifying an individual's risk of developing CRC. However, a full evaluation of an association between CYP1A1*2A and cancer susceptibility in Europeans is difficult and will require a larger number of participants.
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页码:475 / 477
页数:3
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