內(nèi)質(zhì)網(wǎng)應(yīng)激信號(hào)通路在高脂誘導(dǎo)的心肌細(xì)胞損傷中的作用
[Abstract]:Objective to investigate the role of endoplasmic reticulum stress signaling pathway in hyperlipidemic cardiomyocyte injury. Methods the growth status of cardiomyocytes was evaluated by palmitic acid (0.1 ~ 0.4 mmol L ~ (-1) (0 ~ 48 h), CCK-8), and the expression level of intracellular endoplasmic reticulum stress signal pathway associated protein and apoptotic protein were evaluated by Western blot. Results the proliferation rate of H9C2 cardiomyocytes stimulated by palmitic acid (0.1 ~ 0.4 mmol / L ~ (-1) at 24 h or 0.2 mmol L ~ (-1) was significantly decreased. When palmitic acid (0.2 mmol L ~ (-1) stimulated H9C2 cardiomyocytes, the proliferation rate of H9C2 cells decreased significantly in 24 h group. Palmitic acid (0.2 mmol L ~ (-1) increased the expression of ER stress-related protein and Bax protein (P0.05), while the expression of Bcl-2 decreased significantly (P0.05). The expression of Bcl-2 and Bax returned to normal level in pravastatin,10mol L ~ (-1) preconditioning group compared with pravastatin free palmitic acid (0.2 mmol L ~ (-1) group). Conclusion endoplasmic reticulum stress signaling pathway plays an important role in the pathogenesis and treatment of hyperlipidemic myocardial injury.
【作者單位】: 武漢大學(xué)中南醫(yī)院心血管內(nèi)科;湖北科技學(xué)院糖尿病心腦血管病變湖北省重點(diǎn)實(shí)驗(yàn)室;
【基金】:湖北省教育廳科學(xué)研究計(jì)劃資助項(xiàng)目(No B201696) 湖北科技學(xué)院糖尿病專項(xiàng)基金資助項(xiàng)目(No 2016-18XZ09);湖北科技學(xué)院博士啟動(dòng)基金資助項(xiàng)目(No BK1432)
【分類號(hào)】:R54;R587.2
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