Abstract
Background: Type 2 diabetes mellitus (T2DM) is an increasingly common disorder characterized by chronic hyperglycemia and marked dyslipidemia. This study evaluates the effect of vitamin D supplementation alone and in combination with glimepiride in streptozotocin-induced T2DM in rats. Materials and methods: A total of 30 Wistar albino rats of either sex weighing 150-200 g were included in the study. The effect of oral administration of vitamin D was evaluated in streptozotocin-induced T2DM in rats. Blood glucose, serum insulin, serum HbA1c, and serum vitamin D were evaluated. Results: D treatment has significantly improved hyperglycemia, hyperinsulinemia, and insulin sensitivity compared with the non-treated diabetic rats. Oral administration of vitamin D in streptozotocin-induced T2DM reduced blood sugar levels, increased insulin levels (more prominently when administered along with glimepiride) and decreased HbA1c levels (p<0.005). Conclusions: Administration of vitamin D can improve hyperglycemia and hyperinsulinemia in streptozotocin-induced T2DM in rats. Thus, it could be considered as an add on therapy along with other antidiabetic drugs.
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