特异性环氧合酶-2抑制剂西乐葆胃黏膜安全性实验研究

被引:6
作者
李军婷
李兆申
湛先保
崔忠敏
聂时南
机构
[1] 第二军医大学长海医院消化内科
关键词
非甾体抗炎药; 西乐葆; 胃黏膜损伤; 环氧合酶-1; 环氧合酶-2;
D O I
暂无
中图分类号
R965 [实验药理学];
学科分类号
摘要
目的 比较特异性环氧合酶 2 (COX 2 )抑制剂西乐葆与传统非甾体抗炎药 (NSAIDs)对胃黏膜的损害。方法 分别以西乐葆、吲哚美辛复制大鼠NSAIDs性胃黏膜损伤模型 (n =8) ;以无水乙醇复制胃黏膜急性损伤模型 ,再以西乐葆灌胃 (n =8)。观察各组胃黏膜 6 酮 前列腺素F1α(6 keto PGF1α)、血栓素B2 (TXB2 )水平、损伤指数 (LI)及光镜、扫描电镜下的变化。结果 吲哚美辛组胃黏膜损害明显 (LI :13.38± 2 .0 6 ) ,6 keto PGF1α、TXB2 明显下降 (P <0 .0 1) ,抑制率分别为 81.6 %,81.8%,LI与 6 keto PGF1α、TXB2 水平呈负相关。西乐葆组 6 keto PGF1α、TXB2 无明显抑制 (P >0 .0 5 ) ,对健康胃黏膜无损害 (LI :0 ) ,但可加重乙醇诱导的胃损伤 (LI :37.19± 3.34比 19.90± 2 .2 8,P <0 .0 1)。结论 COX 1活性抑制是NSAIDs胃病的主要机制 ;特异性COX 2抑制剂西乐葆不造成健康鼠胃黏膜损伤 ,有较高的胃肠道安全性 ,但可加重原有胃损伤。
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页码:28 / 30
页数:3
相关论文
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