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COX-2 mRNA expression in esophageal squamous cell carcinoma before and after treated with non-steroidal anti-inflammatory drugs
Xuan Liu, Peng Li, Shu-Tian Zhang, Ji-Dong Jia, Zhong-Lin Yu
Xuan Liu, Peng Li, Shu-Tian Zhang, Ji-Dong Jia, Zhong-Lin Yu, Beijing Center for Digestive Diseases, Beijing Friendship Hospital, Capital University of Medical Sciences, Beijing 100050, China
Correspondence to: Shu-Tian Zhang, Beijing Center for Digestive Diseases, Beijing Friendship Hospital, Capital University of Medical Sciences, Beijing 100050, China. zhangst@bddc_bfh.com.cn
Received: September 10, 2004 Revised: September 13, 2004 Accepted: September 15, 2004 Published online: November 15, 2004
AIM: To investigate the potential relationship between COX-2 mRNA expression and human esophageal squamous cell carcinoma (ESCC) and to explore the effect of non-steroidal anti-inflammatory drugs (NSAID) on ESCC.
METHODS: Frozen specimens of human esophageal squamous cell carcinoma (n = 22) and adjacent normal esophageal squamous epithelium were examined for COX-2 mRNA expression by reverse-transcription polymerase chain reaction (RT-PCR). After incubated with aspirin or nimesulide, proliferation of human esophageal squamous cancer cells (EC-9706 and EC-109) was quantified by MTT assay, and COX-2 mRNA expression in these cells was detected by RT-PCR.
RESULTS: Of 22 cancer specimens, COX-2 mRNA was expressed in 12 cases(54.5%). However, in all the samples of adjacent normal esophageal squamous epithelium, COX-2 mRNA expression were not detected. Both aspirin and nimesulide inhibited EC-9706 cell proliferation and COX-2 mRNA expression. However, aspirin also inhibited EC-109 cell proliferation and COX-2 mRNA expression while nimesulide did not.
CONCLUSION: COX-2 mRNA is frequently expressed in human ESCC and COX-2 may play an important role in carcinogenesis of ESCC. NSAID may be helpful in prevention and treatment of this cancer.
Key Words: N/A
Citation: Liu X, Li P, Zhang ST, Jia JD, Yu ZL. COX-2 mRNA expression in esophageal squamous cell carcinoma before and after treated with non-steroidal anti-inflammatory drugs. Shijie Huaren Xiaohua Zazhi 2004; 12(11): 2527-2530
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