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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: OBJECTIVE, METHODS, RESULTS. Meshes: Calcium Channel Blockers, Carcinoma, Squamous Cell, Cell Line, Tumor, Cell Movement, Cyclooxygenase 2, Esophageal Neoplasms, Humans, Matrix Metalloproteinase 2, Neoplasm Invasiveness, Nicotine, Nicotinic Agonists, Smoking, Sulfonamides.
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Does nicotine enhance migration and invasion of human esophageal squamous carcinoma cells which is inhibited by nimesulide? Context: To study the effect of nicotine on the migration and invasion of human esophageal squamous carcinoma cells and to investigate whether nimesulide can inhibit the effect of nicotine. The esophageal squamous carcinoma cell line (TE-13) was treated with different concentrations of nicotine (100 microg/mL and 200 microg/mL) or 200 microg/mL nicotine plus 100 micromol/L nimesulide. Cell migration and invasion were measured using migration and invasion chamber systems. COX-2 expression was determined by Western blotting. Matrix metalloproteinase-2 (MMP-2) was analyzed by zymography and ELISA. Nicotine (100 microg/mL, 200 microg/mL) enhanced TE-13 cells migration and invasion, and increased the protein expression of COX-2 and the activity of MMP-2. Nicotine (200 microg/mL) stimulated TE-13 cells migration and invasion which were partly blocked by nimesulide. This was associated with decreased protein expression of COX-2 and decreased activity and protein expression of MMP-2.
assistant
Nicotine enhances the migration and invasion of the esophageal squamous carcinoma cell line, and nimesulide partly blocks the effect of nicotine-enhanced esophageal squamous carcinoma cell migration and invasion. Final Decision: yes