To evaluate whether Shenfu injection （SFI） protects against cardiac myocyte injury induced by Fupian injection （FPI） in vitro. METHODS： H9c2 cells were separately treated with FPI, Renshen injection （RSI） and S...To evaluate whether Shenfu injection （SFI） protects against cardiac myocyte injury induced by Fupian injection （FPI） in vitro. METHODS： H9c2 cells were separately treated with FPI, Renshen injection （RSI） and SFI. Cell viability, lactate dehydrogenase （LDH） release, spontaneous beating rate of primative cardical cells, caspase-3/7 activity, cell apoptosis, and cytochrome P450 2J3 （CYP2J3） mRNA expression were analyzed. RESULTS： The viability of H9c2 cells treated with SFI （37 and 75 mg/mL） was significantly higher than that of H9c2 cells treated with FPI （25 and 50 mg/mL） （P〈0.05, P〈0.01, respectively）. LDH activity of H9c2 cells treated with SFI （75 mg/mL） was significantly decreased （P〈0.01） compared with that of H9c2 cells treated with FPI （50 mg/mL）. SFI （150 mg/mL） significantly attenuated FPI （100 mg/mL）-induced spontaneous beating rate decrease in primary myocardial cells after 4-hour treatment. Compared with FPI （12 and 25 mg/mL）, SFI （18 and 37 mg/mL） treatment could effectively reverse the change of caspase-3/7 activity （P〈0.01 and P〈0.01, respectively）. Compared with FPI （6 and 25 mg/mL）, apoptotic cells decreased significantly （P〈0.05, P〈0.01, respectively） when H9c2 cells were incubated with SFI （9 and 37 mg/mL）. The expression of CYP2J3 mRNA was down-regulated by FPI, while RSI and SFI could up-regulate the expression of CYP2J3 （P〈0.01）, which suggested the potential mechanism of protection of RSI against cardiac myocyte damage induced by FPI treatment. CONCLUSION： These observations indicate that SFI has the potential to exert cardioprotective effects against FPI toxicity. The effect was possibly correlated with the activation of CYP2J3.展开更多
研究麦冬皂苷D对麦冬皂苷D'诱导大鼠心肌细胞凋亡的干预作用及可能机制,为麦冬皂苷类成分的毒效差异深入研究提供参考。CCK-8法检测麦冬皂苷D与麦冬皂苷D'共处理对细胞存活率的影响; Western blot法及RT-PCR法检测麦冬皂苷D及...研究麦冬皂苷D对麦冬皂苷D'诱导大鼠心肌细胞凋亡的干预作用及可能机制,为麦冬皂苷类成分的毒效差异深入研究提供参考。CCK-8法检测麦冬皂苷D与麦冬皂苷D'共处理对细胞存活率的影响; Western blot法及RT-PCR法检测麦冬皂苷D及麦冬皂苷D'对内质网应激相关基因PERK,Bip,ATF-4,p-eIF2α及CHOP表达的影响;流式细胞仪检测细胞凋亡率;通过内质网形态特异性示踪探针检测麦冬皂苷D'造成的内质网形态改变及麦冬皂苷D的逆转效果,探究麦冬皂苷D保护心肌细胞损伤的可能作用机制。细胞实验结果显示,6μmol·L-1的麦冬皂苷D'可显著诱导内质网应激相关蛋白的表达,导致细胞内质网形态发生变化,促进细胞凋亡。不同浓度的麦冬皂苷D可在一定程度上逆转麦冬皂苷D'引起的心肌细胞损伤。结果表明,麦冬皂苷D可降低麦冬皂苷D'触发的内质网应激,进而对心肌细胞产生保护作用。展开更多
基金supported by grants from the National Natural Science Foundation of China(No.81274127,No.81073149)the National Basic Research Program("973 Program")of China(No.2012CB518402,No.2011CB505304)
文摘To evaluate whether Shenfu injection （SFI） protects against cardiac myocyte injury induced by Fupian injection （FPI） in vitro. METHODS： H9c2 cells were separately treated with FPI, Renshen injection （RSI） and SFI. Cell viability, lactate dehydrogenase （LDH） release, spontaneous beating rate of primative cardical cells, caspase-3/7 activity, cell apoptosis, and cytochrome P450 2J3 （CYP2J3） mRNA expression were analyzed. RESULTS： The viability of H9c2 cells treated with SFI （37 and 75 mg/mL） was significantly higher than that of H9c2 cells treated with FPI （25 and 50 mg/mL） （P〈0.05, P〈0.01, respectively）. LDH activity of H9c2 cells treated with SFI （75 mg/mL） was significantly decreased （P〈0.01） compared with that of H9c2 cells treated with FPI （50 mg/mL）. SFI （150 mg/mL） significantly attenuated FPI （100 mg/mL）-induced spontaneous beating rate decrease in primary myocardial cells after 4-hour treatment. Compared with FPI （12 and 25 mg/mL）, SFI （18 and 37 mg/mL） treatment could effectively reverse the change of caspase-3/7 activity （P〈0.01 and P〈0.01, respectively）. Compared with FPI （6 and 25 mg/mL）, apoptotic cells decreased significantly （P〈0.05, P〈0.01, respectively） when H9c2 cells were incubated with SFI （9 and 37 mg/mL）. The expression of CYP2J3 mRNA was down-regulated by FPI, while RSI and SFI could up-regulate the expression of CYP2J3 （P〈0.01）, which suggested the potential mechanism of protection of RSI against cardiac myocyte damage induced by FPI treatment. CONCLUSION： These observations indicate that SFI has the potential to exert cardioprotective effects against FPI toxicity. The effect was possibly correlated with the activation of CYP2J3.
文摘研究麦冬皂苷D对麦冬皂苷D'诱导大鼠心肌细胞凋亡的干预作用及可能机制,为麦冬皂苷类成分的毒效差异深入研究提供参考。CCK-8法检测麦冬皂苷D与麦冬皂苷D'共处理对细胞存活率的影响; Western blot法及RT-PCR法检测麦冬皂苷D及麦冬皂苷D'对内质网应激相关基因PERK,Bip,ATF-4,p-eIF2α及CHOP表达的影响;流式细胞仪检测细胞凋亡率;通过内质网形态特异性示踪探针检测麦冬皂苷D'造成的内质网形态改变及麦冬皂苷D的逆转效果,探究麦冬皂苷D保护心肌细胞损伤的可能作用机制。细胞实验结果显示,6μmol·L-1的麦冬皂苷D'可显著诱导内质网应激相关蛋白的表达,导致细胞内质网形态发生变化,促进细胞凋亡。不同浓度的麦冬皂苷D可在一定程度上逆转麦冬皂苷D'引起的心肌细胞损伤。结果表明,麦冬皂苷D可降低麦冬皂苷D'触发的内质网应激,进而对心肌细胞产生保护作用。
