枸杞多糖对高糖所致视网膜神经节细胞凋亡、基因表达及延迟整流钾电流的影响

被引：18

作者：

马小飞

机构：

[1] 湖北省松滋市人民医院眼科

来源：

海南医学院学报 | 2017年 / 23卷 / 05期

关键词：

糖尿病视网膜病变; 枸杞多糖; 凋亡; 氧化应激; 钾电流;

D O I：

10.13210/j.cnki.jhmu.20161221.005

中图分类号：

R587.2 [糖尿病性昏迷及其他并发症]; R774.1 [视网膜疾病];

学科分类号：

100201 [内科学]; 100212 [眼科学];

摘要：

目的:研究枸杞多糖(LBP)对高糖所致视网膜神经节细胞凋亡、基因表达及延迟整流钾电流的影响。方法:培养RGC-5视网膜神经节细胞株并分为对照组、高糖组、LBP组,分别用普通DMEM培养基、高糖DMEM培养基以及含有500ng/mL LBP的高糖DMEM培养基处理。处理后,采用Annexin V-FITC/PI试剂盒测定凋亡细胞数目,采用荧光定量PCR试剂盒测定凋亡基因及抗氧化基因的表达量,采用膜片钳检测延迟整流钾电流。结果:干预后12h、24h、36h、48h时,高糖组的细胞凋亡数目显著高于对照组,LBP组的细胞凋亡数目显著低于高糖组;干预后24h、48h时,高糖组细胞中c-fos、c-jun、caspase-3、caspase-9、Nrf-2、NQO1、HO-1的mRNA表达量以及IK、Gmax均显著高于对照组,V1/2显著低于对照组;LBP组细胞中c-fos、c-jun、caspase-3、caspase-9的mRNA表达量以及IK、Gmax均显著低于高糖组,LBP组细胞中Nrf-2、NQO1、HO-1的mRNA表达量以及V1/2均显著高于高糖组。结论:枸杞多糖能够减轻高糖所致视网膜神经节细胞凋亡并抑制延迟整流钾电流的幅度。

引用

页码：581 / 584

页数：4

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