Abstract
Oxidative stress is the main player in the development of diabetic vascular complications. Co-Q10 is a natural antioxidant present in the body and in many foods. This study was designed to evaluate the effect of Co-Q10 administration to improve vascular complications and increase insulin sensitivity in diabetic rats. Fifty male rats were divided into five groups: control, diabetic untreated, diabetic insulin-treated, diabetic Co-Q10-treated, and diabetic combined-treated groups. After 8 weeks, blood pressure and vascular reactivity to NE and ACh, fasting glucose, insulin, C-peptide, MDA, TAC, HbA1c, and the HOMA-IR were measured. Diabetes increased fasting glucose, HbA1c, HOMA-IR, MDA, blood pressure, and decreased TAC and vascular reactivity. Ttreatment with insulin or Co-Q10 improved glycemic parameters and increasing antioxidant levels compared to diabetic group. Combined Co-Q10 with insulin was found to increase insulin sensitivity and decrease its resistance, which helps to decrease insulin doses in diabetic patients and reduce its side effects.
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