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;
12:2527-2530. [DOI:
10.11569/wcjd.v12.i11.2527]
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Abstract
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.
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