Department of Clinical Biochemistry, Medical School, Hamadan University of Medical Sciences, Hamadan, Iran.
Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
Turk J Med Sci. 2016 Nov 17;46(5):1561-1567. doi: 10.3906/sag-1505-6.
BACKGROUND/AIM: Adipose tissue plays a major role in glucose homeostasis. Dietary antioxidants such as resveratrol (RSV) may offer some protection against the early stage of diabetes mellitus and the development of complications. The present study investigated the effects of RSV on biochemical parameters and resistin and apelin gene expressions in adipose tissue of rats with type 2 diabetes.
Diabetes was induced using a single dose of streptozotocin + nicotinamide. Three groups of diabetic rats were treated with different doses of RSV (1, 5, and 10 mg/kg body weight per day). Oxidative status, serum biochemical parameters, insulin, and HOMA index were measured. Finally, resistin and apelin gene expressions were determined in rats' adipose tissue using RT- PCR (qRT-PCR).
A significant reduction in serum glucose level was observed in rats treated with 5 and 10 mg/kg per day RSV compared with the diabetic control. Resistin expression in adipose tissue was reduced in RSV-treated groups, while no significant changes were observed in apelin expression.
The results showed that RSV improves insulin sensitivity due to a simultaneous decrease in blood glucose and an increase in insulin. We concluded that RSV has potential hypoglycemic effect, probably by increasing insulin levels and changing the expression of resistin.
背景/目的:脂肪组织在葡萄糖稳态中起着重要作用。膳食抗氧化剂,如白藜芦醇(RSV),可能对糖尿病早期和并发症的发展提供一定的保护。本研究旨在探讨 RSV 对 2 型糖尿病大鼠生化参数和脂肪组织抵抗素和 Apelin 基因表达的影响。
通过单次给予链脲佐菌素+烟酰胺诱导糖尿病。三组糖尿病大鼠分别用不同剂量 RSV(1、5 和 10mg/kg 体重/天)治疗。测定氧化状态、血清生化参数、胰岛素和 HOMA 指数。最后,用 RT-PCR(qRT-PCR)测定大鼠脂肪组织中抵抗素和 Apelin 基因的表达。
与糖尿病对照组相比,每天用 5 和 10mg/kg RSV 治疗的大鼠血清葡萄糖水平显著降低。脂肪组织中抵抗素的表达在 RSV 治疗组中降低,而 Apelin 的表达没有明显变化。
结果表明,RSV 通过降低血糖和增加胰岛素同时提高胰岛素敏感性。我们得出结论,RSV 具有潜在的降血糖作用,可能是通过增加胰岛素水平和改变抵抗素的表达。