Abstract
The role of Saxagliptin in diabetes-associated cardiovascular complications is controversial. This study aimed to investigate whether Saxagliptin could prevent Isoproterenol-induced myocardial changes in diabetic rats and to identify the possible mechanism as well. The high-fat diet/low-dose Streptozotocin-induced type 2 diabetic rats were divided into 3 groups: the control group (0.25% CMC for 28 days), the Isoproterenol group (85 mg/kg Isoproterenol for the last 2 days plus 0.25% CMC for 28 days), and the treatment group (10 mg/kg Saxagliptin for 28 days plus 85 mg/kg Isoproterenol for the last 2 days). Hemodynamic measurements were performed, and samples were examined for RAGE and NF-κB expressions, histopathological and ultrastructural changes, AGEs level, myocardial injury markers, oxidative stress, and apoptosis. Saxagliptin significantly recovered cardiac function (p < .001), reverted myocardial injury and oxidative stress levels back to the control value (p < .05 to p < .001). Saxagliptin alleviates Isoproterenol-induced myocardial injury in diabetic rats by suppressing AGE-RAGE pathway.
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