Swimming impacts on pancreatic inflammatory cytokines, miR-146a and NF-кB expression levels in type- 2 diabetic rats.

Obesity-induced chronic inflammation is a key component in the pathogenesis of insulin resistance
and type-2 diabetes Objective: This study aimed to evaluate the effect of swimming exercise on
pancreatic expression levels of inflammatory cytokines, miR-146a and NF-кB in type-2 diabetic male
rats.
METHOD:
Twenty- eight male Wistar rats were divided into four groups: control (Con), exercise, diabetes and
diabetic exercise (n = 7). Diabetes induction performed by the combination of high-fat diet (HFD, 4
weeks) and streptozotocin (35 mg/kg. ip). After induction of diabetes, the rats swam in the exercise
groups for 12 weeks. Then, blood and tissue samples were collected.
RESULT:
Our results indicated a significant increase in expression levels of miR-146, NF-κB and inflammatory
cytokines (IL-6, TNF-α, and IL-1β) while a significant decrease in pancreatic expression levels of
TRAF6 and IRAK1 in diabetic group as compared to the control group. In contrast, swimming
exercise resulted in a significant decrease in expression levels of miR-146a, NF-кB and inflammatory
cytokines and a significant increase in expression levels of TRAF6 and IRAK1 in the exercise-
diabetic group compared to the diabetic group.
CONCLUSION:
Our results indicated a significant increase in expression levels of miR-146, NF-κB and inflammatory
cytokines (IL-6, TNF-α, and IL-1β) while a significant decrease in pancreatic expression levels of
TRAF6 and IRAK1 in diabetic group as compared to the control group. In contrast, swimming
exercise resulted in a significant decrease in expression levels of miR-146a, NF-кB and inflammatory
cytokines and a significant increase in expression levels of TRAF6 and IRAK1 in the exercise-
diabetic group compared to the diabetic group