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Preparation and Antidiabetic Effect of Orally Administered Nifedipine‐Loaded Solid Lipid Nanoparticles in Fructose-Induced Diabetic Rats

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Pharmacology & Pharmacy 2018年第10期9卷 457-471页

作者： sabarni sarker Md. Ashraf Ali Ranjan Kumar Barman Shuji Noguchi Yasunori Iwao Shigeru Itai Mir Imam Ibne Wahed Department of Pharmacy Faculty of Life and Earth Sciences Jagannath University Dhaka Bangladesh Department of Pharmacy Mawlana Bhasani University of Science of Technology Tangail Bangladesh Department of Pharmacy Faculty of Science University of Rajshahi Rajshahi Bangladesh Laboratory of Pharmaceutics Faculty of Pharmaceutical Sciences Toho University Tokyo Japan Department of Pharmaceutical Engineering and Drug Delivery Science School of Pharmaceutical Sciences University of Shizuoka Shizuoka Japan

The use of Nifedipine (NI), a dihydropyridine calcium channel blocker, is limited due to its poor aqueous solubility. However, NI loaded solid-lipid nanoparticles (NI-SLN) are known to exhibit suitable pharmacokinetic properties and good biocompatibility. The present investigation was designed to evaluate the effects of NI-SLN on glucose homeostasis, lipid metabolism and liver function in fructose-induced diabetic rats. NI-SLN was prepared by high pressure homogenization technique followed by lyophilization with trehalose as cryoprotectant. Diabetes was induced into rats by the administration of fructose (10%) in drinking water for six weeks. After induction of diabetes, rats were divided into four groups for the oral ingestion of NI, NI-SLN and/or vehicles and their effects on blood glucose levels, oral glucose tolerance test (OGTT), lipid profile, biochemical parameters, electrolytes and histopathology were observed. Single dose administration and treatment with NI-SLN showed significant glucose lowering efficacy in fructose-induced diabetic rats. Although NI and NI-SLN did not alter the fasting blood glucose level in normal rats, diabetic rats treated with NI-SLN resulted in significant reduction in glucose level for 24 hr. In OGTT, NI-SLN exhibited significant antihyperglycemic activity in both normal and diabetic rats. So, NI-SLN has better glucose lowering efficacy than that of pure NI in diabetic rats. The survival rates in rats among the treatment groups were 100%. Treatment with NI-SLN significantly improved lipid profiles than NI alone and the effect was dose-dependent. Administration of NI-SLN significantly reduced uric acid, creatinine levels and maintained a good cationic balance. After two weeks of NI-SLN treatment, hepatocytes regained their normal architecture, and the beneficial effect could be correlated with the reduction of SGOT and total bilirubin levels. Therefore, NI-SLN was found to be useful for the enhancement of bioavailability and exhibit

关键词： Formulation Solid Lipid Nanoparticle Calcium Channel Blocker Nifedipine Fructose Diabetes

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