尼美舒利对胃溃疡模型大鼠的保护作用研究

目的:研究环氧化酶-2选择性抑制剂尼美舒利对药物诱导胃溃疡的保护作用。方法:采用吲哚美辛灌胃给药制备大鼠胃溃疡模型,5min后按组别给予高、中、低(200、100、50mg·kg-1)不同剂量尼美舒利,6h后处死大鼠,观察胃溃疡面积和胃黏膜的损伤程度,检测血清及胃黏膜中超氧化物歧化酶(SOD)、丙二醛(MDA)和谷胱甘肽(GSH)值的变化。结果:与模型组比较,尼美舒利组大鼠胃溃疡面积明显减小,MDA水平降低,SOD和GSH活性升高(P<0.05或P<0.01)。结论:尼美舒利对吲哚美辛所致大鼠胃溃疡具有明显的保护作用。

Protective Effect of Nimesulide on Experimental Gastric Ulcer in Rats

OBJECTIVE: To study the protective effects of nimesulide, a COX- 2 selective inhibitor on experimental gastric ulcer in rats. METHODS: The gastric ulcer model was established in rats by intragastric administration them with indometacin, 5 min later, which were assigned to receive nimesulide at different dosages ( 200, 100, and 50mg· kg- 1) , 6h later, all the rats were sacrificed. The primary outcome measures were the area of ulcer, levels of SOD, MDA, and GSH in sera and gastric mucosa. RESULTS: As compared with model group, in nimesulide ( at different dosage) groups, the area of ulcer was markedly decreased, level of MDA was decreased while activities of SOD and GSH were increased ( P<0. 05 or P<0. 01) . CONCLUSION: Nimesulide has a good protective effect on indometacin- induced gastric ulcer in rats.