【摘要】 目的探究甘草黄酮(Gla)对脂多糖(LPS)诱导的BV-2小胶质细胞一氧化碳(NO)生成和诱导型一氧化氮合酶(i NOS)表达影响。方法将BV-2细胞分为对照组、LPS组和Gla处理组,并进行相应处理。采用NO试剂盒检测NO释放量;转录聚合酶链反应(RT-PCR)法检测i NOS m RNA表达量;免疫荧光染色显示i NOS蛋白在BV-2细胞表达情况。结果 LPS刺激可显著增加BV-2小胶质细胞NO释放量和i NOS mRNA生成量(P<0.01),造成大量i-NOS阳性细胞出现,细胞体积增大,突起变粗短。Gla处理则可显著降低BV-2细胞NO释放量和i NOS mRNA生成量(P<0.01),同时i NOS阳性细胞数明显减少,细胞体积缩小,突起变细长。结论 Gla可调节BV-2细胞i-NOS表达,抑制LPS诱导的小胶质细胞神经炎症。更多还原

【Abstract】 Objective To investigate the effects of glabridin(Gla) on NO production and i NOS expression in BV-2 microglial cells. Methods BV-2 cells were divided into the control group, LPS group and Gla treatment group and processed accordingly. The NO release was detected by NO kit, the expression of i NOS mRNA by RT-PCR, and the expression of i NOS protein by immunofluorescence staining. Results LPS stimulation significantly increased NO release and i NOS mRNA production in BV-2 microglial cells(P<0.01), resulting in a large number of i NOS-positive cells, larger cell size, thicker and shorter cell protrusions. Gla treatment significantly reduced NO release and i NOS mRNA production in BV-2 cells(P<0.01), significantly fewer i NOS-positive cells, smaller cell size, and slim cell protrusions. Conclusion Gla may regulate the i NOS expression in BV-2 cells and inhibit the neuroinflammation induced by LPS in microglial cells更多还原