Amelioration of hyperglycemia, hyperlipidemia, oxidative stress and inflammation in steptozotocin-induced diabetic rats fed a high fat diet by riceberry supplement

Journal of Functional Foods

Vijittra Leardkamolkarn¹  Surat Komindr²  Rin Charoensiri³  Ratchanee Kongkachuichai³  Pattaneeya Prangthip³  Uruwan Yamborisut³  Reuthaithip Surasiang³  Apichart Vanavichit⁴ 

[1] Department of Anatomy, Faculty of Science, Mahidol University, Bangkok 10400, Thailand;Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand;Institute of Nutrition, Mahidol University, Salaya, Phutthamonthon 4, Nakhon Pathom 73170, Thailand;Rice Research Center, Kasetsart University, Kamphaeng Saen, Nakhon Pathom 73140, Thailand;

关键词: Rice bran;    Type 2 diabetic mellitus;    Antioxidants;    Inflammation;    Bioactive compounds;    GLUT4;   

DOI  :  

来源: DOAJ

【 摘 要 】

Dark purple riceberry bran contains a higher dietary fiber and antioxidant compounds than unpigmented rice bran. Riceberry supplement (RB) was used to evaluate the effects on biochemical parameters, skeletal muscle glucose transporter 4 (GLUT4), oxidative stress and inflammation in a streptozotocin (STZ)-induced diabetes rat. To elucidate the effects were due to dietary fiber supplementation and/or bioactive components, equivalent amounts of dietary fiber present in RB were also fed to STZ-induced diabetic rats. Diabetes Sprague–Dawley rats (non-FBG ⩾ 16.65 mM) were randomly divided into five groups: DM fed a high fat (HF) diet, DM-RB1 fed 5% RB, DM-RB2 fed 41% RB, DM-F1 fed 0.6% fiber and DM-F2 fed 5% fiber. After 12 weeks, significant improvement of BG, insulin, HbA1C, IPGTT and GLUT4 levels were observed in DM-RB1 and DM-RB2 groups. Hyperlipidemia was significantly improved in DM-RB2 and DM-F2 groups. Oxidative stress (TBARS), antioxidant enzymes (SOD, CAT, and GPx), antioxidant capacity (ORAC), pro-inflammation cytokine (TNF-α and IL-6) were improved in DM-RB1 and DM-RB2 groups. Improvement of pancreas and spleen histology was found in DM-RB1 and DM-RB2 groups. These indicate the potential of RB to improve hyperglycemia and hyperlipidemia conditions as well as alleviate oxidative stress and inflammation.

【 授权许可】

Unknown