摘要
目的:观察二氢石蒜碱对大鼠离体海马脑片脑缺氧/复氧损伤的保护作用以及与NO的关系。方法:采用大鼠离体海马脑片缺氧/复氧(H/R)损伤模型,记录群峰电位(PS)恢复幅度和恢复率及检测乳酸脱氢酶(LDH)的活性和NO含量变化。结果:与H/R模型组比较,二氢石蒜碱1×10^-6和1×10^-5mol·L^-1浓度显著增加H/R损伤后PS恢复幅度[(94.3±49.1)%,(71.0±41.4)%vs(14.2±34.7)%,P〈0.05]和恢复率(P〈0.05);降低孵育液中LDH的活性[(250.57±12.57),(200.74±23.71)vs(300.57±16.08)U·L^-1,P〈0.05-0.01]和NO量[(0.64±0.04),(0.02±0.06)vs(4.62±0.29)mmol·L^-1,P〈0.01]。结论:二氢石蒜碱对大鼠离体海马脑片脑缺氧/复氧损伤有保护作用,与降低NO产生有关。
Objective: To investigate the effects of dihydrolycorine(DL) on hypoxia/reoxygenation(H/R) injury in rat hippocampal slices,and the role of NO in these effects.Methods: After H/R injury in rat hippocampal slices,amplitude of population spikes(PS) was recorded in the pyramidal cell body layer of CA1 area.The activity of lactate dehydrogenase(LDH) and contend of nitric oxide(NO) in incubation medium were determined by biochemical methods.Results: Compared with H/R control,DL(1×10^-6 and 1×10^-5 mol·L^-1) significantly increased the PS recovery amplitude [(94.3±49.1)% and(71.0±41.4)% vs(14.2±34.7)%,P〈0.05] and PS recovery rate(P〈0.05).It significantly reduced the activity of LDH [(250.57±12.57) and(200.74±23.71) vs(300.57±16.08) U·L^-1,P〈0.05-0.01] and the contend of NO [(0.64±0.04) and(0.02±0.06) vs(4.62±0.29) mmol·L^-1,P〈0.01].Conclusion: DL can attenuate H/R injury in rat hippocampal slices,which might relate to reduction of NO production.
出处
《中国新药杂志》
CAS
CSCD
北大核心
2008年第22期1931-1933,共3页
Chinese Journal of New Drugs
基金
湖北省自然科学基金资助(2000J166)
郧阳医学院研究生启动项目(2005QDJ06)
关键词
二氢石蒜碱
海马脑片
缺氧/复氧
dihydrolycorine
hippocampal slices
hypoxia/reoxygenation