【摘要】 目的 观察不同浓度葡萄糖对混合培养视网膜细胞的影响。方法 混合培养视网膜细胞中加入终浓度分别为30、60、120mmol/L的葡萄糖,10%FBS DMEM培养24、72、96h后,采用MTT法测定细胞增殖,用Griess反应法检测细胞上清液中NO浓度。结果 60mmol/L葡萄糖培养24h,120mmol/L葡萄糖作用于视网膜混合培养细胞72、96h其吸光度增加。60、120mmol/L葡萄糖培养72h,其上清液中NO浓度较正常显著降低(P<0.01)。结论 高浓度葡萄糖可使视网膜混合培养细胞增殖,其机制可能部分与NO产生量减少有关。
关键词 视网膜细胞 高浓度葡萄糖 细胞增殖
Effect on different concentration of glucose on retina cells Han Bing,Zhu Quan.
School of Life Science,Nanjin University,Jiangsu210093.
【Abstract】 Objective To observe the influence of different concentration of glucose on retina cells.Methods Retina cells were incubated in10%FBS DMEM culture medium containing30,60,120mmol/L glucose for24,72,96hours.The proliferation of retina cells assessed by MTT method.Production of NO was determined with Griess reaction technique.Results The proliferation of retina cells were increased in60mmol/L glucose cultured for24h and120mmol/L glucose cultured for72,96h compared with normal.60,120mmol/L glucose cultured for72h could decrease the amount of NO.Conclusion High glucose can stimulate the proliferation of retina cells,the mechanism maybe lies in decreasing the concentration of NO.
Key words retina cells high concertration of glucose hyperplasia 增殖型糖尿病视网膜病变(PDR)以视网膜新生血管和纤维化为特征,最终可导致视网膜脱离,患者视力丧失。DR发生、发展的确切机制目前尚不十分清楚,但与多元醇通路的激活,蛋白质非酶糖基化,自由基活性增强,PKC活化,生长因子失衡,氨基己糖通路活性提高及血流动力学改变等均密切相关,而最终表现为细胞增殖调控失常 [1] 。本实验以混合培养视网膜细胞作为受试对象,观察不同浓度葡萄糖对其的影响。
1 材料与方法
1.1 实验试剂 D-Hanks(pH=7.4),DMEM培养基,新生小牛血清(GIBCO USA),0.25%胰蛋白酶(MERCK USA),MTT(FLUKA)。
1.2 实验仪器 BIO-RAD酶联免疫检测仪(JAPAN)。
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