胰升血糖素樣肽1對(duì)晚期氧化蛋白產(chǎn)物誘導(dǎo)的心肌細(xì)胞凋亡保護(hù)作用的研究
[Abstract]:Objective to investigate the protective effect and mechanism of glucagon like peptide 1 (GLP-1) on cardiomyocyte apoptosis induced by late oxidative protein product (AOPPs). Methods H9C2 cardiomyocytes were treated with AOPPs1 GLP-1AOPPs GLP-1 and AOPPs GLP-1 LY294002 for 24 h. Cck-8 assay was used to detect the proliferation activity of cells. DCFH-DA fluorescence probe was used to detect the production of reactive oxygen species (Ros) in cells. Annexin V-FITC/PI double staining method was used to detect apoptosis. Western blot was used to detect the expression of p-Aktna-p-Bad-Bcl-2Bax-active-caspase-3 protein. Results GLP-1 decreased the cell proliferation activity induced by AOPPs [(1.409 鹵0.099) vs (0.929 鹵0.083) P0.01], decreased the production of reactive oxygen species induced by AOPPs [(47.817 鹵0.878) vs (25.413 鹵2.597) P 0.01] and apoptosis [(15.773 鹵3.130) vs (9.715 鹵0.757)] GLP-1 could restore the phosphorylation of Akt and Bad inhibited by AOPPs. The expression of pro-apoptotic protein Bax and apoptotic executor active-caspase-3 was decreased by increasing the expression of anti-apoptotic protein Bcl-2,. Conclusion GLP-1 changes the balance between pro-apoptosis and anti-apoptotic proteins through PI3K/Akt/Bad signaling pathway and protects H9C2 cardiomyocytes from apoptosis induced by AOPPs.
【作者單位】: 廣東省韶關(guān)市粵北人民醫(yī)院內(nèi)分泌科;
【分類(lèi)號(hào)】:R542.2;R587.2
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