Background The change of glucose transporter 4 （GLUT4） expression could influence glucose uptake in the myocardial cells and then effect myocardial metabolism, which maybe one of the factor for the diabetes cardiova...Background The change of glucose transporter 4 （GLUT4） expression could influence glucose uptake in the myocardial cells and then effect myocardial metabolism, which maybe one of the factor for the diabetes cardiovascular disease. This study aimed to explore the influence of glucose and insulin at different concentrations on H9c2 （2-1） cell proliferation and its GLUT4 expression in vitro, and evaluate the correlation between myocardial cells proliferation and GLUT4 expression. This might be helpful for understanding the relationship between glucose metabolism and cardiovascular disease. Methods According to glucose concentrations in culture medium, cultured H9c2 rat myocardial cells were divided into five groups： control group （NC, glucose concentration 5.0 mmol/L）, low glucose group （LG, glucose concentration 0.1 mmol/L）, high glucose group 1 （HG1, glucose concentration 10 mmol/L）, high glucose group 2 （HG2, glucose concentration 15 mmol/L）, high glucose group 3 （HG3, glucose concentration 20 mmol/L）. Then according to different insulin concentrations in culture medium, each group was further divided into two subgroups： normal insulin subgroup （INSc, insulin concentration 3.8 mU/L）, high insulin subgroup （INSh, insulin concentration 7.6 mU/L）. H9c2 （2-1） cells were cultured for 1, 2, 3 days, the proliferation of cells were assayed by cell counting Kit-8 assay, the expressions of GLUT4 mRNA and protein were detected with RT-PCR and Western Blotting technique, and the relation between myocardial cells proliferation and GLUT4 expression was evaluated.展开更多
文摘Background The change of glucose transporter 4 （GLUT4） expression could influence glucose uptake in the myocardial cells and then effect myocardial metabolism, which maybe one of the factor for the diabetes cardiovascular disease. This study aimed to explore the influence of glucose and insulin at different concentrations on H9c2 （2-1） cell proliferation and its GLUT4 expression in vitro, and evaluate the correlation between myocardial cells proliferation and GLUT4 expression. This might be helpful for understanding the relationship between glucose metabolism and cardiovascular disease. Methods According to glucose concentrations in culture medium, cultured H9c2 rat myocardial cells were divided into five groups： control group （NC, glucose concentration 5.0 mmol/L）, low glucose group （LG, glucose concentration 0.1 mmol/L）, high glucose group 1 （HG1, glucose concentration 10 mmol/L）, high glucose group 2 （HG2, glucose concentration 15 mmol/L）, high glucose group 3 （HG3, glucose concentration 20 mmol/L）. Then according to different insulin concentrations in culture medium, each group was further divided into two subgroups： normal insulin subgroup （INSc, insulin concentration 3.8 mU/L）, high insulin subgroup （INSh, insulin concentration 7.6 mU/L）. H9c2 （2-1） cells were cultured for 1, 2, 3 days, the proliferation of cells were assayed by cell counting Kit-8 assay, the expressions of GLUT4 mRNA and protein were detected with RT-PCR and Western Blotting technique, and the relation between myocardial cells proliferation and GLUT4 expression was evaluated.
