丙泊酚通过MAPK/ERK信号通路对谷氨酸诱导的神经PC12细胞损伤的抑制作用
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篇名: 丙泊酚通过MAPK/ERK信号通路对谷氨酸诱导的神经PC12细胞损伤的抑制作用
TITLE:
摘要: 目的:研究丙泊酚通过丝裂原激活的蛋白激酶/胞外信号调节的蛋白激酶(MAPK/ERK)信号通路对谷氨酸诱导的神经PC12细胞损伤的抑制作用。方法:取PC12细胞分为正常对照组、模型(10 mmol/L谷氨酸)组和丙泊酚低、中、高浓度(12.5、25、50 μmol/L+10 mmol/L谷氨酸)组,分别加入相应药物,培养48 h后,检测各组细胞的光密度、凋亡情况和细胞中ERK1/2磷酸化水平及c-fos、Bax、B淋巴细胞瘤2(Bcl-2)的表达情况。结果:与正常对照组比较,模型组细胞的细胞光密度、磷酸化ERK1/2、Bcl-2表达均降低(P<0.01),凋亡率、c-fos和Bax表达均升高(P<0.01)。与模型组比较,丙泊酚低、中、高浓度组细胞的光密度、磷酸化ERK1/2、Bcl-2表达均升高(P<0.01),凋亡率、c-fos和Bax表达均降低(P<0.05或P<0.01),且各浓度间差异有统计学意义(P<0.01)。结论:丙泊酚可抑制谷氨酸诱导的PC12细胞凋亡,其可能与上调ERK1/2磷酸化水平有关。
ABSTRACT: OBJECTIVE: To study inhibitory effects of propofol on PC12 cells injury induced by glutamic acid via mitogen-activated protein kinase/extra-cellular regulated kinase (MAPK/ERK) signal pathway. METHODS: PC12 cells were randomized into normal control group, model group (10 mmol/L glutamic acid), propofol low-concentrations, medium-concentrations and high-concentrations groups (12.5, 25, 50 μmol/L+10 mmol/L glutamic acid). The optical density of cells, cell apoptosis, the phosphorylation of ERK1/2 and the expression of c-fos, Bax, Bcl-2 were detected after treated with relevant medicine for 48 h. RESULTS: Compared with normal control group, optical density of cells, the phosphorylation of ERK1/2 and Bcl-2 decreased in model group (P<0.01); apoptotic rate, the expression of c-fos and Bax increased (P<0.01). Compared with model group, optical density of cells, the expression of Bcl-2 and the phosphorylation of ERK1/2 increased in propofol group (P<0.01); apoptosis rate, the expression of c-fos and Bax decreased (P<0.05 or P<0.01). There were statistical significant between the different concentrations (P<0.01). CONCLUSIONS: Propofol can inhibit the apoptosis of PC12 cells induced by glutamic acid, which is associated with the up-regulation of ERK1/2 phosphorylation.
期刊: 2016年第27卷第1期
作者: 李峥,高项羽,刘喆,梁楠,南征
AUTHORS: LI Zheng,GAO Xiangyu,LIU Zhe,LIANG Nan,NAN Zheng
关键字: 丙泊酚;神经PC12细胞;凋亡;丝裂原激活的蛋白激酶/胞外信号调节的蛋白激酶信号通路
KEYWORDS: Propofol; PC12 cells; Apoptosis; Mitogen-activated protein kinase/extra-cellular regulated kinase signal pathway
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