PTGS2 (COX-2) −765G > C Promoter Variant Reduces Risk of Colorectal Adenoma among Nonusers of Nonsteroidal Anti-inflammatory Drugs

PTGS2 (COX-2) −765G > C Promoter Variant Reduces Risk of Colorectal Adenoma among Nonusers of Nonsteroidal Anti-inflammatory Drugs
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PTGS2 (COX-2) −765G > C 启动子变体可降低非甾体类抗炎药非使用者患结直肠腺瘤的风险

DOI:
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发表时间:
2005
期刊:
Cancer Epidemiology, Biomarkers and Prevention
影响因子:
--
通讯作者:
J. Bigler
J. Bigler
中科院分区:
--
文献类型:
--
作者:
C. Ulrich;J. Whitton;Joon;J. Sibert;R. Sparks;J. Potter;J. Bigler

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前列腺素 H 合酶 2 (PTGS2) 或环氧合酶-2 (COX-2) 已被证明在炎症调节中发挥关键作用,其抑制与降低结肠癌风险相关。 PTGS2 (COX-2) -765G > C 启动子变体位于假定的 SP1 结合位点并降低 PTGS2 表达。在明尼苏达州的一项病例对照研究中,研究对象为腺瘤性息肉 (n = 494) 或增生性息肉 (n = 186) 与无息肉对照 (n = 584),我们研究了 PTGS2 -765G > C 启动子多态性的作用。使用多元逻辑回归分析,调整年龄、体重指数、热量摄入、酒精、纤维、性别、激素使用和吸烟。对于结直肠腺瘤,与作为参考的 PTGS2 -765GG 相比,比值比 (OR) 为 GC 1.00 [95% 置信区间 (95% CI),0.74-1.35] 和 CC 0.53 (95% CI,0.22-1.28)。对于增生性息肉,可比较的调整优势比为 GC 0.97(95% CI,0.65-1.46)和 CC 0.24(95% CI,0.05-1.11)。 -765G > C 变异相关的风险因阿司匹林或其他非甾体抗炎药 (NSAID) 的使用而异。在不使用阿司匹林或其他 NSAID 的人中,CC 基因型使腺瘤风险显着降低(OR,0.26;95% CI,0.07-0.89)。使用阿司匹林或其他 NSAID 仅在具有 -765GG(野生型)和可能 -765CG 基因型的患者中降低腺瘤风险(OR,0.66;95% CI,0.48-0.92 和 OR,0.64;95% CI,0.40-1.02)。这些数据表明,PTGS2 -765GG(野生型)个体中的阿司匹林或其他 NSAID 以及非 NSAID 使用者中的 -765 CC 变异基因型可能有益地抑制 COX-2 表达或活性,并降低结直肠息肉的风险。
Prostaglandin H synthase 2 (PTGS2) or cyclooxygenase-2 (COX-2) has been shown to play a key role in the regulation of inflammation, and its inhibition is associated with a reduced risk of colon cancer. The PTGS2 (COX-2) −765G > C promoter variant is located in a putative SP1 binding site and reduces PTGS2 expression. In a Minnesota-based case-control study of cases with adenomatous (n = 494) or hyperplastic polyps (n = 186) versus polyp-free controls (n = 584), we investigated the role of the PTGS2 −765G > C promoter polymorphism. Multiple logistic regression analysis was used, adjusting for age, body mass index, caloric intake, alcohol, fiber, sex, hormone use, and smoking. For colorectal adenoma, odds ratios (OR) compared with PTGS2 −765GG as reference were GC 1.00 [95% confidence interval (95% CI), 0.74-1.35] and CC 0.53 (95% CI, 0.22-1.28). For hyperplastic polyps, the comparable adjusted odds ratios were GC 0.97 (95% CI, 0.65-1.46) and CC 0.24 (95% CI, 0.05-1.11). Risk associated with the −765G > C variant differed by aspirin or other nonsteroidal anti-inflammatory drug (NSAID) use. Among nonusers of aspirin or other NSAIDs, the CC genotype conferred a significant decrease in risk of adenoma (OR, 0.26; 95% CI, 0.07-0.89). Use of aspirin or other NSAIDs reduced risk of adenoma only among those with the −765GG (wild type) and possibly −765CG genotypes (OR, 0.66; 95% CI, 0.48-0.92 and OR, 0.64; 95% CI, 0.40-1.02, respectively). These data suggest that COX-2 expression or activity may be beneficially suppressed, and risk of colorectal polyps reduced, by aspirin or other NSAIDs in PTGS2 −765GG (wild type) individuals and by the −765 CC variant genotype in nonusers of NSAIDs.
DOI: 10.1056/nejmoa021633
发表时间: 2003-03-06
影响因子: 158.5
作者:
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DOI: --
发表时间: 1997-04
期刊: Cell growth & differentiation : the molecular biology journal of the American Association for Cancer Research
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发表时间: 1991-04-01
影响因子: 11.1
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发表时间: 1990-02
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影响因子: 29.4
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