Different concentrations of insulin affect the growth and proliferation of in vitro cultured cardiomyocytes from neonatal rats / 中国组织工程研究
Chinese Journal of Tissue Engineering Research
;
(53)2007.
Article
in Chinese
| WPRIM
| ID: wpr-592039
ABSTRACT
BACKGROUND:
Study on mouse models of hyperinsulinemia confirms that hyperinsulinemia can induce the occurrence of myocardial hypertrophy.OBJECTIVE:
To study the effect of insulin on proliferation and hypertrophy of cardiomyocytes in neonatal mice in vitro cultured. DESIGN,TIME ANDSETTING:
The in vitro cytology experiment was performed at the Key Laboratory of Anatomy,Histology and Embryology of Xinxiang Medical University from January 2006 to March 2007. MATERIALSTwenty Wistar neonatal mice aged 1-3 days were used in this study. Insulin was obtained from Sigma,USA.METHODS:
Cardiomyocytes of neonatal mice were in vitro harvested,culture and purified by trypsin digestion and differential attachment technique. Cardiomyocytes were incubated in 10-8,10-7,10-6 mol/L insulin for 48 hours. Blank control group was set up. 10-7 mol/L insulin group was used for cell cycle analysis. MAIN OUTCOMEMEASURES:
Cell diameter,activity and counting were measured under a microscope. The expression of cyclin E in cardiomyocytes was measured using immunocytochemistry.RESULTS:
Cardiomyocyte activity in each group was over 90%. Compared with the blank control group,long diameter and short diameter of cardiomyocytes in the 10-8,10-7,10-6 mol/L insulin groups were significantly increased(t=2.781 5,P 0.05) ,but the number of cardiomyocytes in the 10-6 mol/L insulin group significantly decreased(t=1.976 2,P
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Chinese Journal of Tissue Engineering Research
Year:
2007
Type:
Article
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