黄芪和当归注射液对兔肾缺血再灌注损伤时腺苷三磷酸酶的影响

黄芪和当归注射液对兔肾缺血再灌注损伤时腺苷三磷酸酶的影
响
李达兵;赵春玲;林海英;李先华;邬于川
【期刊名称】《中国组织工程研究》
【年(卷),期】2005(009)015
【摘要】背景:近年研究表明,黄芪和当归具有抗自由基的作用,对肾缺血再灌注损伤具有保护作用.目的:观察黄芪、当归注射液在肾缺血再灌注损伤中对腺苷三磷酸酶(ATP酶)的保护作用及机制.设计:以实验动物为研究对象的观察对比实验.单位:一所医学院的生理教研室及肾功能保护研究室.材料:本实验于2001-01/2001-03在泸州医学院生理实验室完成.选择健康成年日本大耳白兔33只,由泸州医学院实验动物中心提供,雌雄不拘,体质量(1.63±0.22)kg.按随机数字表法分为假手术对照组8只、单纯缺血再灌注组8只、黄芪注射液+缺血再灌注组(黄芪组)8只、当归注射液+缺血再灌注组(当归组)9只.方法:术前1 d、手术当天、术后1 d,黄芪组、当归组每天分别静脉注射药物(黄芪1.25 g/kg、当归12.5 g/kg),对照组和单纯缺血再灌注组每天注射生理盐水5 mL/kg.肾缺血1 h再灌注48 h后,下腔静脉采血,取右肾上极组织置入30 mL/L戊二醛固定,下极组织制成组织匀浆.电镜检查肾组织超微结构,测血清肌酐含量及肾组织中ATP酶活性.主要观察指标:肾组织超微结构、血清肌酐含量及肾组织中ATP酶活性.结果:单纯缺血再灌注组肾组织变性显著,黄芪组、当归组病变较单纯缺血再灌注组明显减轻.单纯缺血再灌注组血清肌酐含量明显高于假手术对照组(P＜0.05);黄芪组、当归组血清肌酐含量较单纯缺血再灌注组降低(P＜0.05).单纯缺血再灌注组Mg2+-ATP酶、Na+-K+-ATP酶、Ca2+-ATP酶含量分别为(0.155±0.020),(0.179±0.018),(0.150±0.022)nkat/g,与假手术
对照组[(0.174±0.012),(0.198±0.012),(0.181±0.017)nkat/g]相比明显降低
(t=2.344,2.438,3.014,P＜0.05);黄芪组及当归组的Mg2+-ATP酶、Na+-K+-ATP酶、Ca2+-ATP酶活性分别为
(0.172±0.023),(0.196±0.077)(0.175±0.016)(0.177±0.015)(0.200±0.011)和(0.181±0.025)nkat/g,除黄芪组Mg2+-ATP酶活性较单纯缺血再灌注组差异无显著性外,余均较单纯缺血再灌注组高(t=2.372～2.786,P＜0.05).结论:黄芪、当归具有抑制ATP酶下降和改善肾局部血流调节紊乱的作用,为其通过保护ATP酶而减轻肾缺血再灌注损伤提供实验学基础.%BACKGROUND: It is indicated in researches of recent years that both astragalus and angelica act on anti-free radical and protect renal injury due to ischemia /
reperfusion.OBJECTIVE: To observe the protection and its mechanism of astragalus and angelica injections on adenosine triphosphate-ase (ATPase) in renal injury due to ischemia/reperfusion.DESIGN: The observing controlled experiment based on experimental animals .SETTING: Physiological teaching & research room and teaching & research room of renal functional protection in a medical college. MATERIALS: The experiment was performed in Physiological Experimental Room of Luzhou Medical College from January 2001 to March 2001. Totally 33 Japanese big-ear white healthy adult rabbits of either sex were employed,provided by Experimental Animal Center of Luzhou Medical College, in the mass
of(1.63 + 0. 22) kg. According to random number table, they were divided in sham-operation control(8 rabbits), simple ischemia/reperfusion group (8 rabbits), astragalus injection + ischemia/reperfusion group (astragalus group) (8 rabbits) and angelica injection + ischemia/reperfusion
group(angelica group) (9 rabbits).METHODS: One day before operation, on the day of operation and 1 day after operation, successively, intravenous medical injections (astragalus 1.25 g/kg,angelica 12.5 g/kg) were administrated in astragalus and angelica groups everyday respectively, and injection with physiological saline 5 mL/kg was applied in the control and simple ischemia/reperfusion group. In 48 hours reperfusion after 1 hour ischemia in kidney, blood sample was collected from inferior vena cava. The upper tissue of the right kidney was collected and fixed by placed in 30 mL/L glutaraldehyde and the lower tissue was prepared into homogenate. Ultrastructure of renal tissue was examined with electron microscope; serum creatinine level and ATPase activity in renal tissue were assayed.MAIN OUTCOME MEASURES: Ultrastructure of renal tissue, serum creatinine level and ATPase activity in renal tissue.RESULTS: In simple ischemia/reperfusion group, renal tissue was degenerated significantly, and the disorders in astragalus and angelica groups were reduced markedly compared with simple ischemia/reperfusion group. Serum creatinine level in simple ischemia/reperfusion group was higher remarkably than the sham-operation control ( P ＜ 0. 05 ), and that in astragalus and angelica groups was reduced than simple
ischemia/reperfusion group (P ＜ 0. 05) . In simple ischemia/reperfusion group, the levels of Mg2+-ATPaes, Na+-K+-ATPase and Ca2+-ATPase were(0. 155 ±0. 020),(0.179±0.018), (0.150±0.022) nkat/g respectively, which was markedly reduced compared with sham-operation control [ (0. 174 + 0. 012),(0. 198 + 0. 012), (0. 181 + 0. 017) nkat/g], ( t = 2. 344, 2. 438,
3. 014,P ＜ 0.05 ). In astragalus and angelica groups, respectively, the activities of Mg2+-ATPaes, Na+-K+-ATPase and Ca2+-ATPase were(0. 172 ± 0. 023),(0. 196 ±0. 077), (0. 175 ±0. 016) and (0. 177 ±0. 015), (0. 200
±0.011 )and (0.181 ± 0. 025) nkat/g successively. Except that Mg2+-ATPaes activity in astragalus group was not different significantly from that in simple ischemia/reperfusion group, all the rest were higher than simple ischemia/reperfusion group(t =2. 372 -2. 786, P ＜0.05).CONCLUSION: Both astragalus and angelica inhibit the decrease of ATPase and improve the disturbed local blood-flow adjustment in kidney, which has provided experimental basis of astragalus and angelica on reducing renal injury induced by ischemia/reperfusion through protecting ATPase.
【总页数】3页(P222-224)
【作者】李达兵;赵春玲;林海英;李先华;邬于川
【作者单位】泸州医学院生理教研室、肾功能保护研究室,四川省,泸州市,646000;泸州医学院生理教研室、肾功能保护研究室,四川省,泸州市,646000;泸州医学院生理教研室、肾功能保护研究室,四川省,泸州市,646000;泸州医学院生理教研室、肾功能保护研究室,四川省,泸州市,646000;泸州医学院微生物与免疫学教研室,四川省,泸州市,646000
【正文语种】中文
【中图分类】R54
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