莫诺苷抑制过氧化氢诱导的SH-SY5Y神经细胞钙超载和细胞毒

Morroniside Inhibits Hydrogen Peroxide-induced Calcium Overload and Cytotoxicity in SH-SY5Y Neuroblastoma Cells

目的研究莫诺苷抑制过氧化氢诱导的SH-SY5Y神经细胞钙超载和细胞毒作用。方法体外培养的人神经母细胞瘤细胞系SH-SY5Y细胞分别加入莫诺苷1μmol/L、10μmol/L、100μmol/L预孵育24h,加入H2O2300～500μmol/L,作用18h,检测细胞内游离钙离子浓度、乳酸脱氢酶(LDH)释放率。结果与未加莫诺苷预孵育的细胞相比,莫诺苷10μmol/L、100μmol/L能抑制神经细胞内游离钙离子浓度增加,莫诺苷1μmol/L、10μmol/L、100μmol/L能降低LDH的释放率。结论莫诺苷能够抑制H2O2诱导的SH-SY5Y神经细胞钙超载和细胞毒,有神经保护作用。

Objective To investigate the effects of morroniside on hydrogen peroxide （H2O2 ）-induced calcium overload and cyto- toxicity in SH-SY5Y neuroblastoma cells. Methods SH-SY5Y cells were pre-incubated with morroniside 1, 10, or 100 μmol/L for 24 h prior to exposure to H2O2 300-500 μmol/L for 18 h. The cytosolic free calcium coacentration and LDH release were determined. Results The H2O2-induced cytosolic free calcium concentration decreased in the cells pre-incubated with morroniside 10 or 100 μmol/L, while the LDH release level decreased in the cells pre-incubated with morroniside 1, 10 or 100 μmol/L, comparison with the cells exposed H2O2 along. Conclusion Morroniside effects neuroprotection against H2O2-induced calcium overload and cyto- toxicity in SH-SY5Y cell.