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二甲双胍对胰岛素抵抗状态下脂肪细胞的作用
引用本文:吴乃君,金秀平,盛佳曦,沈春瑾,魏剑芬,王颖,陈冬,孟庆玲,焦文叶.二甲双胍对胰岛素抵抗状态下脂肪细胞的作用[J].中国医药,2014(1):66-69.
作者姓名:吴乃君  金秀平  盛佳曦  沈春瑾  魏剑芬  王颖  陈冬  孟庆玲  焦文叶
作者单位:河北联合大学附属医院内分泌科,河北省唐山市063000
基金项目:基金项目:河北省科学技术研究与发展计划(122777104);河北省唐山市科学技术研究与发展计划增补项目(13130266z)
摘    要:目的探讨二甲双胍对胰岛素抵抗状态下3T3-L1脂肪细胞的作用以及可能的作用机制。方法体外培养3T3-L1前脂肪细胞,诱导分化成熟后,将分化成熟的3T3-L1脂肪细胞分为空白组、模型组和不同浓度二甲双胍(0.01、0.10、0.50、1.00mmol/L)组,观察药物处理48h后培养基中葡萄糖含量及腺苷酸活化蛋白激酶(AMPK)mRNA水平。结果①模型组细胞上清培养液的葡萄糖吸光度值(2.5390±0.0024)明显高于空白组(1.4778±0.0033)(P〈0.05),1.00、0.50、0.10、0.01mmol/L浓度的二甲双胍组培养液的葡萄糖吸光度值(分别为1.7400±0.0024、1.7418±0.0028、2.1785±0.0019、2.3693±0.0029)均低于模型组(2.5390±0.0024)(均P〈0.05)。②模型组的AMPKmRNA水平(0.120±0.006)明显低于空白组(1.000±0.000)(P〈0.05)。0.01、0.10、0.50、1.00mmol/L浓度的二甲双胍组AMPKmRNA水平(分别为0.240±0.006、0.530±0.035、0.850±0.020、0.890±0.041)明显高于模型组(均P〈0.05)。结论二甲双胍改善胰岛素抵抗状态下葡萄糖摄取,可能通过上调3T3-L1脂肪细胞AMPK水平增加胰岛素抵抗状态下脂肪细胞葡萄糖摄取。

关 键 词:胰岛素抵抗  二甲双胍  3T3-L1脂肪细胞  腺苷酸活化蛋白激酶

Effect of metformin on insulin resistant adipocyte
Wu Naijun,Jin Xiuping,Sheng Jiaxi,Shen Chunjin,Wei Jianfen,Wang Ying,Chen Dong,Meng Qingling,Jiao Wenye.Effect of metformin on insulin resistant adipocyte[J].China Medicine,2014(1):66-69.
Authors:Wu Naijun  Jin Xiuping  Sheng Jiaxi  Shen Chunjin  Wei Jianfen  Wang Ying  Chen Dong  Meng Qingling  Jiao Wenye
Institution:. Department of Metabolism and Endocrinology, Affiliated Hospital of Hebei United University, Hebei Provinece, Tangshan 063000, China
Abstract:Objective To study the effects of metformin on insulin resistant 3T3-L1 adipocyte. Methods 3T3-L1 adipocyte was chosen as our experimental object. When the resistance model was established, the adipocyte was divided into blank group, model group, 0.01 mmol/L metformin group, 0.10 mmol/L metformin group, 0.50 mmol/L metformin group and 1.00 mmol/L metformin group. After metformin was intervented for 48 hours, the level of glucose in the medium and the mRNA expression of adenosine monophos-phate activated protein kinase (AMPK) were examined. Results The absorbance level of model group (2. 539 0 ± 0. 002 4) was significant higher than that of the blank group ( 1. 477 8 ± 0. 003 3 ) ( P 〈 0.05 ). The absorbance level in 1.00, 0.50, 0.10, 0.01 mmol/L metformin group(1. 740 ±0. 002 4, 1.741 8 ±0.002 8, 2. 178 5 ±0. 001 9, 2. 369 3 ±0. 002 9)were lower than that in the model group (0. 120 ± 0. 006) ( P 〈 0.05 ). The expression of AMPK mRNA in model group (0. 120 ±0. 006) was significant lower than that in the blank group( 1. 000 ±0. 000) ( P 〈 0.05 ). The expression of AMPK mRNA in each metformin group ( 0.24 ± 0. 006, 0.53 ± 0. 035, 0.85 ± 0. 020, 0.89 ± 0. 041 ) was significant higher than that in the model group ( 0. 120 ± 0. 006 ) ( P 〈 0.05 ). Conclusion Metformin can improve the glucose intake in insulin resistant 3T3-L1 adipocyte. Metformin may increase the glucose intake in insulin resistant 3T3-L1 adipocyte by increasing the expression of AMPK mRNA.
Keywords:Insulin resistance  Metformin  3T3-L1 adipocyte  Adenosine monophosphate activated protein-activated protein kinase
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