| 1 | COX-2 polymorphisms-765G→C and-1195A→G and colorectal cancer risk显示文摘AIM:To determine the possible modulating effect of the COX-2 polymorphisms,-765G→C and-1195A→G, on the risk of colorectal cancer(CRC)in a Dutch population. METHODS:This case-control study includes 326 patients with CRC and 369 age-and gender-matched controls.Genotypes of the COX-2 polymorphisms -765G→C and-1195A→G were determined by polymerase chain reaction-based restriction fragment length polymorphism.COX-2 genotypes and haplotypes were analyzed and odds ratios with 95%confi- dence intervals were estimated by logistic regression. RESULTS:The-765GG genotype was associated with an increased risk of developing CRC(OR,1.45; 95%CI,1.03-2.04).No significant difference was observed in the genotype distribution of the-1195A→ G polymorphism between patients and controls.The GG/AC haplotype was present significantly less often in patients than in controls(OR 0.44;95%CI,0.22-0.85). When the AC,AG and GG haplotypes were investigated separately,the AC haplotype showed a tendency to be less frequent in patients than in controls(OR(AG/AC)0.78; 95%CI,0.57-1.06). CONCLUSION:The-765GG genotype is associatedwith an increased risk of developing CRC and the GG/ AC haplotype seems to protect against CRC.These findings suggest a modulating role for the COX-2 polymorphisms-765G→C and-1195A→G in the development of CRC in a Dutch population. | Juliёt H Hoff Rene HM te Morsche Hennie MJ Roelofs Elise MJ van der Logt Fokko M Nagengast Wilbert HM Peters | 2009 | World Journal of Gastroenterology2009，15，36： | 6 |
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