医学临床研究
醫學臨床研究
의학림상연구
Journal of Clinical Research
2015年
7期
1373-1375
,共3页
血红素氧化酶(脱环)%KATP通道%缺血预处理,心肌%心肌再灌注损伤/预防和控制%吗啡
血紅素氧化酶(脫環)%KATP通道%缺血預處理,心肌%心肌再灌註損傷/預防和控製%嗎啡
혈홍소양화매(탈배)%KATP통도%결혈예처리,심기%심기재관주손상/예방화공제%마배
Heme Oxygenase (Decyclizing)%KATP Channels%Ischemic Preconditioning,Myocardial%Myocardial Reperfusion Injury/PC%Morphine
【目的】研究血红素氧合酶‐1(HO‐1)和线粒体ATP敏感性钾(Mitochondrial KATP ,mitoKATP )通道与吗啡预处理的延迟性心肌保护作用的关系。【方法】雄性Wistar大鼠随机分为5组。IR组(A组),腹腔注射生理盐水5 mL ,24 h后行心肌缺血再灌注(IR);Mor组(B组),腹腔注射吗啡3 mg/kg(用生理盐水稀释至5 mL),24 h后行心肌IR;HO‐1阻滞剂(ZnPP‐IX)+ Mor组(C组),腹腔注射ZnPP‐IX 20μg/kg ,30 min后腹腔注射吗啡3 mg/kg ,24 h后行心肌IR;mitoKATP通道阻滞剂(5‐HD)+Mor组(D组),腹腔注射5‐HD 5 mg/kg ,20 min后腹腔注射吗啡3 mg/kg ,24 h后行心肌IR;Mor+5‐HD组(E组),腹腔注射吗啡3 mg/kg ,24 h后行IR ,但在缺血前10 min腹腔注射5‐HD 5 mg/kg。各组于缺血前、缺血25 min、再灌注30、60、120 min记录大鼠心率(HR )、平均动脉压(MAP)。心肌缺血再灌注结束即刻采用 EB /TTC双重染色,称重法测定心肌梗死面积,比较各组心肌梗死面积发生情况。【结果】和A组相比,B组心肌梗死面积明显减小,且差异有显著性( P<0.05);C组、D组和E组心肌梗死面积无明显差异( P >0.05)。【结论】HO‐1和mitoKATP通道参与了吗啡预处理的延迟性心肌保护作用;mitoKATP通道既是启动因子又是效应器。
【目的】研究血紅素氧閤酶‐1(HO‐1)和線粒體ATP敏感性鉀(Mitochondrial KATP ,mitoKATP )通道與嗎啡預處理的延遲性心肌保護作用的關繫。【方法】雄性Wistar大鼠隨機分為5組。IR組(A組),腹腔註射生理鹽水5 mL ,24 h後行心肌缺血再灌註(IR);Mor組(B組),腹腔註射嗎啡3 mg/kg(用生理鹽水稀釋至5 mL),24 h後行心肌IR;HO‐1阻滯劑(ZnPP‐IX)+ Mor組(C組),腹腔註射ZnPP‐IX 20μg/kg ,30 min後腹腔註射嗎啡3 mg/kg ,24 h後行心肌IR;mitoKATP通道阻滯劑(5‐HD)+Mor組(D組),腹腔註射5‐HD 5 mg/kg ,20 min後腹腔註射嗎啡3 mg/kg ,24 h後行心肌IR;Mor+5‐HD組(E組),腹腔註射嗎啡3 mg/kg ,24 h後行IR ,但在缺血前10 min腹腔註射5‐HD 5 mg/kg。各組于缺血前、缺血25 min、再灌註30、60、120 min記錄大鼠心率(HR )、平均動脈壓(MAP)。心肌缺血再灌註結束即刻採用 EB /TTC雙重染色,稱重法測定心肌梗死麵積,比較各組心肌梗死麵積髮生情況。【結果】和A組相比,B組心肌梗死麵積明顯減小,且差異有顯著性( P<0.05);C組、D組和E組心肌梗死麵積無明顯差異( P >0.05)。【結論】HO‐1和mitoKATP通道參與瞭嗎啡預處理的延遲性心肌保護作用;mitoKATP通道既是啟動因子又是效應器。
【목적】연구혈홍소양합매‐1(HO‐1)화선립체ATP민감성갑(Mitochondrial KATP ,mitoKATP )통도여마배예처리적연지성심기보호작용적관계。【방법】웅성Wistar대서수궤분위5조。IR조(A조),복강주사생리염수5 mL ,24 h후행심기결혈재관주(IR);Mor조(B조),복강주사마배3 mg/kg(용생리염수희석지5 mL),24 h후행심기IR;HO‐1조체제(ZnPP‐IX)+ Mor조(C조),복강주사ZnPP‐IX 20μg/kg ,30 min후복강주사마배3 mg/kg ,24 h후행심기IR;mitoKATP통도조체제(5‐HD)+Mor조(D조),복강주사5‐HD 5 mg/kg ,20 min후복강주사마배3 mg/kg ,24 h후행심기IR;Mor+5‐HD조(E조),복강주사마배3 mg/kg ,24 h후행IR ,단재결혈전10 min복강주사5‐HD 5 mg/kg。각조우결혈전、결혈25 min、재관주30、60、120 min기록대서심솔(HR )、평균동맥압(MAP)。심기결혈재관주결속즉각채용 EB /TTC쌍중염색,칭중법측정심기경사면적,비교각조심기경사면적발생정황。【결과】화A조상비,B조심기경사면적명현감소,차차이유현저성( P<0.05);C조、D조화E조심기경사면적무명현차이( P >0.05)。【결론】HO‐1화mitoKATP통도삼여료마배예처리적연지성심기보호작용;mitoKATP통도기시계동인자우시효응기。
[Objective] To explore whether heme oxygenase‐1 (HO‐1) and mitochondrial ATP sensitive potas‐sium (mitoKATP ) channel are involved in morphine‐induced delayed cardioprotection .[Methods] Wistar rats were randomly divided into 5 groups .And 25 min regional ischemia plus 2 h reperfusion (IR) at 24 h post‐treatment of 0 .9% sodium chloride 5 mL in group IR;morphine 3mg/kg in group Mor ;HO‐1inhibitor ZnPP‐IX 20μg/kg plus morphine 3 mg/kg in group ZnPP+ Mor;mitoKATP channel antagonist 5‐hydroxydecanoic acid (5‐HD) 5 mg/kg plus morphine 3 mg/kg in group 5‐HD+Mor .In group Mor+5‐HD ,IR 24 h after morphine 3mg/kg and 10 min after 5‐HD 5 mg/kg .Heart rate (HR) and mean arterial blood pressure (MAP) were recorded at pre‐ischemia , 30 ,60 ,120 min post‐reperfusion .Infarct size (percentage area at risk) was assessed at the end of reperfusion .[Results] No statistical differences in HR or MAP existed among five groups .Infarct size was 60 .0% ± 10 .5% in group IR .Pretreatment with morphine reduced infarct size to 27 .4% ± 8 .2% after 24 h in group Mor .The reduc‐tion of infarct size by morphine was abolished by 5‐HD given either before morphine application or before ischemia . And cardioprotection was abolished by ZnPP‐IX given before morphine in group ZnPP+Mor .[Conclusion]Both HO‐1 and mitoKATP are probably involved in delayed cardioprotection evoked by morphine .And mitoKATP channel may serve as both a trigger and a effector in cardioprotection .