A Review Nitric oxide(NO) is a biologically active molecule in vivo ,it has been found to play an important role not only as a cytotoxic effector but also an immune regulatory mediator and a signal molecule of message...A Review Nitric oxide(NO) is a biologically active molecule in vivo ,it has been found to play an important role not only as a cytotoxic effector but also an immune regulatory mediator and a signal molecule of message transmission.The inducible NO synthase (iNOS) produces NO after cells were activated and play a rather complicated pathophysiological action in a variety of human diseases or disorders. The molecular biological character of iNOS,its expression in human diseases and probable significance were reviewed.展开更多
文摘目的:研究P38丝裂原活化蛋白激酶(mitogenactivated protein kinase,MAPK)通路在急性重症胰腺炎(severe acute pancreatitis,SAP)大鼠模型海马神经元中对诱导型一氧化氮合酶(inducible nitric oxide synthase,iNOS)和前列腺素E2(prostaglandin E2,PGE2)的作用.方法:将60只SD大鼠随机分为对照组、SAP模型组(模型组)、抑制剂组(P38MAPK通路抑制剂SB203580).Nissl染色、免疫组织化学显色、免疫印迹法检测大鼠海马CA1区iNOS、PGE2和p-P38表达的变化;应用透射电镜观察胰腺组织超微结构的变化.结果:与对照组相比,SAP模型组海马CA1区p-P38(20.4±2.2 vs 2.1±1.3)、i NOS(33.6±4.4 vs 3.7±0.4)、PGE2(34.7±4.0 vs 2.4±1.0)阳性神经元的数量显著增加(P<0.05);给予S B203580后,抑制剂组海马C A1区p-P3 8(1 2.8±0.7)、iNOS(1 4.4±4.9)、P G E2(18.3±0.5)阳性神经元的数量明显减少(P<0.05).模型组胰腺细胞粗面内质网脱颗粒,线粒体水肿扩张,抑制剂组上述改变明显减轻.结论:P38丝裂原活化蛋白激酶通路对SAP大鼠模型海马i NOS和PGE2表达可能起调控作用,抑制该通路对SAP大鼠具有神经保护作用.
文摘A Review Nitric oxide(NO) is a biologically active molecule in vivo ,it has been found to play an important role not only as a cytotoxic effector but also an immune regulatory mediator and a signal molecule of message transmission.The inducible NO synthase (iNOS) produces NO after cells were activated and play a rather complicated pathophysiological action in a variety of human diseases or disorders. The molecular biological character of iNOS,its expression in human diseases and probable significance were reviewed.
