title: Nerium oleander Distillate Improves Fat and Glucose Metabolism in High-Fat Diet-Fed Streptozotocin-Induced Diabetic Rats.
abstract: Diabetes was induced by intraperitoneal injection of streptozotocin (35 mg/kg bw) in all rats of five groups after being fed for 2 weeks high-fat diet. Type 2 diabetic Nerium-oleander- (NO-) administered groups received the NO distillate at a dose of 3.75, 37.5, and 375 μg/0.5 mL of distilled water (NO-0.1, NO-1, NO-10, resp.); positive control group had 0.6 mg glibenclamide/kg bw/d by gavage daily for 12 weeks. Type 2 diabetic negative control group had no treatment. NO distillate administration reduced fasting blood glucose, HbA1c, insulin resistance, total cholesterol, low density lipoprotein, atherogenic index, triglyceride-HDL ratio, insulin, and leptin levels. Improved beta cell function and HDL concentration were observed by NO usage. HDL percentage in total cholesterol of all NO groups was similar to healthy control. NO-10 distillate enhanced mRNA expressions of peroxisome proliferator-activated-receptor- (PPAR-) α, β, and γ in adipose tissue and PPAR-α-γ in liver. The findings from both in vivo and in vitro studies suggest that the considerable beneficial effect of NO distillate administration at a dose of 375 μg/0.5 mL of distilled water may offer new approaches to treatment strategies that target both fat and glucose metabolism in type 2 diabetes.
authors.affiliation: Pharmacology and Toxicology Department, Faculty of Veterinary Medicine, Selcuk University, 42070 Konya, Turkey.
authors.forename: Ahmet Levent
authors.initials: AL
authors.lastname: Bas
authors.forename: Sule
authors.initials: S
authors.lastname: Demirci
authors.forename: Nuray
authors.initials: N
authors.lastname: Yazihan
authors.forename: Kamil
authors.initials: K
authors.lastname: Uney
authors.forename: Ezgi
authors.initials: E
authors.lastname: Ermis Kaya