摘要
目的:探讨人参四逆汤及其有效成分对戊巴比妥钠所致心肌细胞损伤的保护作用及其机制。方法:H9C2细胞经传代培养后,分别给予人参皂苷Rb20. 01,0. 1,1μmol·L~(-1),Re 0. 01,0. 1,1μmol·L~(-1),异甘草素(isoliquiritigenin,ISL) 20,40,80μmol·L~(-1),甘草次酸(glycyrrhetinic acid,GA) 10,20,40μmol·L~(-1),人参四逆汤10,100,400 mg·L~(-1),作用4 h,经0. 1%的戊巴比妥钠作用30 min后,检测细胞存活率,乳酸脱氢酶(lactate dehydrogenase,LDH),脂质过氧化物丙二醛(malondialdehyde,MDA),Na+-K+-三磷酸腺苷(ATP)酶,Ca~(2+)-ATP酶活性,同时采用实时荧光定量聚合酶链式反应(Real-time PCR)检测过氧化物酶体增殖活化受体共激活因子~(-1)α(peroxisome proliferative activated receptor,PGC~(-1)α),B淋巴细胞瘤-2相关X蛋白(Bax),半胱氨酸蛋白酶-3(Caspase-3) mRNA的表达情况。结果:人参四逆汤及其有效成分对心衰细胞模型有保护作用,与正常组比较,模型组细胞存活率显著下降,LDH,MDA含量显著升高,Na+-K+-ATP酶活性升高,Ca~(2+)-ATP酶活性显著降低,PGC~(-1)αmRNA表达下调,Bax,Caspase-3 mRNA表达(P <0. 01),证明模型成立。与模型组比较,各给药组显著升高细胞存活率,降低LDH,MDA含量,抑制Na+-K+-ATP酶活性,提高Ca~(2+)-ATP酶活性,上调PGC~(-1)αmRNA表达,抑制Bax,Caspase-3 mRNA表达(P <0. 05,P <0. 01)。结论:人参四逆汤及其有效成分对心衰细胞模型有显著保护作用,且其作用机制与抗氧化,改善线粒体能量代谢,抑制线粒体凋亡途径有关。
Objective: To explore the protective effect and mechanisms of Renshen Sinitang and its active ingredients on cardiomyocyte injury induced by pentobarbital sodium. Method: H9 C2 cells were sub-cultured with ginsenoside Rb20. 01,0. 1,1 μmol·L~(-1),Re 0. 01,0. 1,1 μmol·L~(-1),isoliquiritigenin 20,40,80 μmol·L~(-1),glycyrrhetinic acid 10,20,40 μmol·L~(-1),Renshen Sinitang,10,100,400 mg·L~(-1),for 4 h. After treatment with0. 1% of sodium pentobarbital for 30 min, cell viability, lactate dehydrogenase(LDH), lipid peroxide malondialdehyde(MDA),Na+-K+-adenosine triphosphate(ATP) ase,Ca~(2+) -ATPase activity,and real-time fluorescence quantitative polymerase chain reaction(Real-time PCR) were used to detect the expressions of peroxisome proliferative activated receptor~(-1)α(PGC~(-1)α),B-cell lymphoma-2 associated X protein(Bax) and cysteine aspartate-specific protease-3(Caspase-3) mRNA. Result: Renshen Sinitang and its active ingredients have a protective effect on heart failure cell model. Compared with the normal group,the cell survival rate of the model group decreased significantly,while the LDH and MDA contents increased significantly,and the Na+-K+-ATPase activity increased. Ca~(2+) -ATPase activity was significantly decreased,PGC~(-1)α mRNA expression was downregulated,Bax and Caspase-3 mRNA expressions indicates the modeling(P < 0. 01). Compared with the model group,each administration group showed a significantly increased cell viability,decreased LDH,MDA content,inhibited Na+-K+-ATPase activity,increased Ca~(2+) -ATPase activity,up-regulated PGC~(-1)α mRNA expression,and inhibited Bax and Caspase-3 mRNA expression(P < 0. 05,P < 0. 01). Conclusion: Renshen Sinitang and its active ingredients have a significant protective effect on heart failure cell model,and its mechanisms of action are related to anti-oxidation,improvement of mitochondrial energy metabolism and inhibition of mitochondrial apoptosis pathway.
引文
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