頁籤選單縮合
題 名 | Association of Cyclooxygenase 2 Single-Nucleotide Polymorphisms and Hepatocellular Carcinoma in Taiwan |
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作 者 | Chang, Wen-shin; Yang, Mei-due; Tsai, Chia-wen; Cheng, Li-hao; Jeng, Long-bin; Lo, Woei-chung; Lin, Chih-hsueh; Huang, Chih-yang; Bau, Da-tian; | 書刊名 | 中國生理學雜誌 |
卷 期 | 55:1 2012.02[民101.02] |
頁 次 | 頁1-7 |
分類號 | 415.5362 |
關鍵詞 | COX-2; Polymorphism; Hepatocellular carcinoma; |
語 文 | 英文(English) |
英文摘要 | Hepatocellular carcinoma (HCC) is a worldwide neoplasm for which early diagnosis is difficult and the prognosis is usually poor. Overexpression of cyclooxygenase 2 (COX-2) has been suggested to be associated with hepatocarcinogenesis. Although several COX-2 inhibitors have been used in hepatoma therapy, the genetic background between COX-2 and HCC remains largely unknown. In this study, the association of genotypic polymorphisms in COX-2 with HCC was investigated. 298 patients with HCC and 298 healthy controls recruited from the China Medical Hospital in Taiwan were genotyped by a PCR-RFLP method. We have investigated six polymorphic variants of COX-2, including A-1195G, G-765C, T+8473C, and variants in introns 1, 5 and 6, and analyzed the association of specific genotype(s) with susceptibility to HCC. The results showed that, for each of the six genotypes, no differences in distribution between the HCC and control groups were found. There was neither obvious joint effect of COX-2 G-765C/intron 6 haplotype nor genotypes with smoking or alcohol consumption on HCC risk. Environmental factors, other than smoking and alcohol drinking, may affect the postnatal expression of COX-2 in the etiology of HCC, which is an outcome of complex genetic and environmental interactions. Moreover, our immunohistochemistrical results indicated that the COX-2 protein was significantly over-expressed in well-differentiated HCC, but not significantly increased in expression in poorlydifferentiated HCC. We suggest that COX-2 may be a determinant of the differentiation grade of HCC. |
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