Objective:To study the mechanism of Shengmai Injection(SMI)on anti-sepsis and protective activities of intestinal mucosal barrier.Methods:The contents of 11 active components of SMI including ginsenoside Rb1,Rb2,Rb3,R...Objective:To study the mechanism of Shengmai Injection(SMI)on anti-sepsis and protective activities of intestinal mucosal barrier.Methods:The contents of 11 active components of SMI including ginsenoside Rb1,Rb2,Rb3,Rd,Re,Rf,Rg1,Rg2,ophioposide D,schisandrol A and schisantherin A were determined using ultra-performance liquid chromatography.Fifty mice were randomly divided into the blank,the model,the low-,medium-and high-dose SMI groups(0.375,0.75,1.5 mL/kg,respectively)by random number table,10 mice in each group.On SMI group,SMI was administrated to mice daily via tail vein injection for 3 consecutive days,while the mice in the blank and model groups were given 0.1 mL of normal saline.One hour after the last SMI administration,except the blank group,the mice in other groups were intraperitoneally injected with lipopolysaccharide(LPS)saline solution(2 mL/kg)at a dosage of 5 mL/kg for development of endotoxemia mice model.The mice in the blank group were given the same volume of normal saline.Inflammatory factors including interferon-γ(INF-γ),tumor necrosis factor-α(TNF-α),interleukin(IL)-2 and IL-10 were measured by flow cytometry.Myosin light-chain kinase(MLCK),nuclear factorκB(NF-κB)levels,and change of Occludin proteins in jejunum samples were analyzed by Western blot.Results:The decreasing trends of INF-γ,TNF-α and IL-2 were found in serum of SMI treatment groups.In SMI-treated mice,the content of Occludin increased and MLCK protein decreased compared with the model group(P<0.05 or P<0.01).The content of cellular and nuclear NF-κB did not change significantly(P>0.05).Conclusion:SMI may exert its anti-sepsis activity mainly through NF-κB-pro-inflammatory factor-MLCK-TJ cascade.展开更多
基金Supported by National Natural Science Foundation of China(No.81673667)Chinese Academy of Medical Science(Peking Union Medical College)Innovation Fund for Medical Science(CIFMS,No.2016-I2M-3-015 and No.2017-I2M-B&R-09)。
文摘Objective:To study the mechanism of Shengmai Injection(SMI)on anti-sepsis and protective activities of intestinal mucosal barrier.Methods:The contents of 11 active components of SMI including ginsenoside Rb1,Rb2,Rb3,Rd,Re,Rf,Rg1,Rg2,ophioposide D,schisandrol A and schisantherin A were determined using ultra-performance liquid chromatography.Fifty mice were randomly divided into the blank,the model,the low-,medium-and high-dose SMI groups(0.375,0.75,1.5 mL/kg,respectively)by random number table,10 mice in each group.On SMI group,SMI was administrated to mice daily via tail vein injection for 3 consecutive days,while the mice in the blank and model groups were given 0.1 mL of normal saline.One hour after the last SMI administration,except the blank group,the mice in other groups were intraperitoneally injected with lipopolysaccharide(LPS)saline solution(2 mL/kg)at a dosage of 5 mL/kg for development of endotoxemia mice model.The mice in the blank group were given the same volume of normal saline.Inflammatory factors including interferon-γ(INF-γ),tumor necrosis factor-α(TNF-α),interleukin(IL)-2 and IL-10 were measured by flow cytometry.Myosin light-chain kinase(MLCK),nuclear factorκB(NF-κB)levels,and change of Occludin proteins in jejunum samples were analyzed by Western blot.Results:The decreasing trends of INF-γ,TNF-α and IL-2 were found in serum of SMI treatment groups.In SMI-treated mice,the content of Occludin increased and MLCK protein decreased compared with the model group(P<0.05 or P<0.01).The content of cellular and nuclear NF-κB did not change significantly(P>0.05).Conclusion:SMI may exert its anti-sepsis activity mainly through NF-κB-pro-inflammatory factor-MLCK-TJ cascade.
