Iranian Journal of

Background: Exercise training is identified as a beneficial component of diabetes treatment plan. Angiogenesis process in diabetics can be affected by exercise activity. The purpose of this study is to determine the effect of aerobic exercise on the expression of mir-126 and capillary density in the cardiac tissue of diabetic rats.

Methods: Twenty diabetic male Wistar rats (mean weight, 191.9±10.85) were divided into two groups of control (n=10) and training (n=10) and the groups were matched based on weight. 48 hours after the last training session, cardiac tissue samples were taken after an overnight fast. Mir-126 expression was used through Real Time PCR. Also, immunohistochemistry (alkaline phosphatase activity) was used to measure the cardiac muscle capillary density.

Results: Independent t-test showed that the 8-week aerobic training significantly increased the expression of mir-126(p=0.001) and capillary density (p=0.018) of cardiac tissue in the exercise group compared to the control group.

Conclusion: The results of this study indicate that the development of angiogenesis by aerobic exercise in diabetic conditions; can be expressed as a non-drug treatments for aerobic exercise and can be used to improve heart perfusion.

Background: Cardiomyopathy is a side effect caused by diabetes. Prolonged hyperglycemia gives rise to an increase in the expression of the receiver gene RAGE subsequently triggering pathogenesis cardiac signaling pathways in the heart of rats with type II diabetes. The present paper aims to examine how a 12 week Resistance training on gene expressions RAGE, ICAM, VCAM in the heart of diabetic rats with STZ.
Methods: 16 male Wistar rats with weight mean ranging from 200 ± 20 g were randomly assigned to two groups of Resistance diabetes (n = 8) and control diabetes (n = 8) and were kept under lab circumstances. A 12 week Resistance training was administered with the experimental group and 48 hours after the end of the last training session the rats were made unconscious and examined. Their hearts were, afterwards, cut out and the extent of gene expressions RAGE, ICAM, VCAM in the left ventricular heart was measured using Real time-PCR method.
Results: The results indicated there was a significant difference between left ventricular heart of the Resistance diabetes and that of control diabetes in terms of gene expression RAGE, yet no significant difference was detected between the two groups in terms of gene expressions ICAM, VCAM.
Conclusion: According to the results, in seems that Resistance trainings effectively reduce gene expressions RAGE and reduction pattern but non-significant in the Gene ICAM, VCAM in left ventricular heart of diabetic rats and therefore can be considered an effective way in reducing pathogenesis cardiac signaling pathways in the heart of rats with type II diabetes.