波动性高糖对人视网膜色素上皮细胞氧化应激的影响  被引量:1

The effect of intermittent high glucose on oxidative stress in human retinal pigment epithelial cells

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作  者:李立琴[1] 李志红[1] 张云良[1] 赵玮[2] 郭淑芹[1] 王翯[1] 马文彬[1] 刘莉芳[1] 程晓东[1] 

机构地区:[1]河北省保定市第一中心医院内分泌一科,071000 [2]河北省保定市第一中心医院耳鼻喉科,071000

出  处:《中国综合临床》2014年第2期177-180,共4页Clinical Medicine of China

摘  要:目的 对比研究波动性高糖与恒定高糖对人视网膜色素上皮(HRPE)细胞氧化应激的影响.方法 培养HRPE细胞株,根据培养条件不同分为4组:(1)正常对照组:5.5 mmol/L葡萄糖;(2)恒定高糖组:33.0 mmol/L葡萄糖;(3)波动性高糖组:5.5 mmol/L和33.0 mmol/L葡萄糖波动组,日间每3小时高糖、2小时低糖交替3次,高糖过夜;(4)渗透压控制组:33.0 mmol/L甘露醇.每组均设6个复孔,置于37℃、5% CO2孵箱中,分别于培养24、48、72 h收集细胞培养上清液用于过氧化物歧化酶(SOD)、谷胱甘肽(GSH)、丙二醛检测.结果 (1)培养24 h,波动性高糖组SOD为(12.1 ±3.0) U/ml,GSH为(68.5±3.8) mg/L,丙二醛为(17.5±3.0) μmol/L;恒定高糖组SOD为(21.8±1.6) U/ml,GSH为(90.8±4.8) mg/L,丙二醛为(12.9±1.2) μmol/L;正常对照组SOD为(31.1±4.7) U/ml,GSH为(143.4±8.3) mg/L,丙二醛为(3.1±1.1) μmol/L;渗透压控制组SOD为(32.4±2.8) U/ml,GSH为(143.3±12.8)mg/L,丙二醛为(2.8±1.2) μmol/L.(2)培养48 h,波动性高糖组SOD为(9.6±1.8) U/ml,GSH为(72.5±4.3)mg/L,丙二醛为(19.1 ±1.7) μmol/L;恒定高糖组SOD为(21.0±2.5) U/ml,GSH为(93.4±4.6) mg/L,丙二醛为(11.6±2.2)μmol/L;正常对照组SOD为(31.0±2.5) U/ml,GSH为(145.5±6.6) mg/L,丙二醛为(3.9±1.0) μmol/L;渗透压控制组SOD为(28.4±0.8) U/ml,GSH为(142.0 ±4.9)mg/L,丙二醛为(2.9±0.8)μmol/L.(3)培养72 h,波动性高糖组SOD为(10.9±1.7)U/ml,GSH为(70.9±7.3) mg/L,丙二醛为(19.5±0.5)μmol/L;恒定高糖组SOD为(20.4±1.7)U/ml,GSH为(91.6±7.2) mg/L,丙二醛为(11.2±3.3) μmol/L;正常对照组SOD为(32.4±4.4)U/ml,GSH为(143.0±23.2) mg/L,丙二醛为(3.0±1.0)μmol/L;渗透压控制组SOD为(29.5±2.6)U/ml,GSH为(134.5±11.1) mg/L,丙二醛为(2.8±0.8)μmol/L.(4)培养24、48、72 h波动性高糖组、恒定高糖组与正常对Objective To compare the effects of intermittent and constant high glucose on oxidative stress and inflammatory injury in human retinal pigment epithelial cells (HRPE).Methods HRPE cells were caltured and randomly divided into 4 groups:normal glucose control group (5.5 mmol/L of glucose,NG group),consistent high glucose group (33.0 mmol/L of glucose,HG group),intermittent high glucose group (33.0 mmol/l of glucose for 3 hours,at an interval of two hours of 5.5 mmol/Lof glucose; Such intermittent exposure was repeated 3 times a day and the cells were exposed to 33.0 mmol/L of glucose in the night,IHG group) and high mannitol group (33.0 mmol/L of mannitol,MG group).Each group had 6 duplicate vials.Samples were cultured in incubator of 37℃,5% CO2,and the activity of total superoxide (T-SOD) and the levels of malondialdehyde,and glutathione (GSH) in supernatant were assayed using chromatometry in 24 hours,48 hours,and 72 hours.Results (1) The activity of T-SOD,GSH and malonaldehyde(MDA) in the HG were (12.1 ±3.0) U/ml,(68.5 ±3.8) mg/L and (17.5 ±3.0) μmol/L respectively,in IHG groups were (21.8 ± 1.6) U/ml,(90.8 ±4.8) mg/L and (12.9 ± 1.2) μmol/L respectively,in control group were (31.1 ± ±4.7) U/ml,(143.4 ± 8.3) mg/L and (3.1 ± 1.1) μmol/L respectively,in MG group were (32.4 ± 2.8) U/ml,(143.3 ± 12.8) mg/L and (2.8 ± 1.2) μmol/L respectively.(2) When cells were cultured for 48 hours,the levels of T-SOD,GSH and MDA in the IHG,HG,NG,and MG groups were (9.6 ± 1.8) U/ml,(72.5 ±4.3) mg/L,(19.1 ±1.7) μmol/L;(21.0±2.5) U/ml,(93.4 ±4.6) mg/L,(11.6±2.2) μmol/L;(31.0±2.5) U/ml,(145.5±6.6) mg/L,(3.9±1.0) μmol/L;(28.4±0.8) U/ml,(142.0±4.9) mg/L,and (2.9 ± 0.8) μmol/L respectively.(3) When cells were cultured for 72 hours,the levels of T-SOD,GSH and MDA in the IHG,HG,NG,and MG groups were (10.9 ± 1.7) U/ml,(70.9 ±7.3) mg/L,(19.5 ±0.5)μm

关 键 词:高血糖波动 人视网膜色素上皮细胞 氧化应激 

分 类 号:R587.2[医药卫生—内分泌]

 

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