期刊
EUROPEAN JOURNAL OF PHARMACOLOGY
卷 829, 期 -, 页码 112-120出版社
ELSEVIER
DOI: 10.1016/j.ejphar.2018.04.015
关键词
Diabetes mellitus; Streptozotocin; Carbohydrate metabolizing enzymes; Isoquercetin; Insulin signaling pathway
资金
- Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong, China [R201627, R201714]
Among the foremost common flavonoids within the human diet, quercetin glycosides possess neuroprotective, cardioprotective, anti-oxidative, chemopreventive, and anti-allergic properties. Isoquercetin is one such promising candidate with anti-diabetic potential. However, complete studies of its molecular action on insulin signaling pathway and carbohydrate metabolizing enzymes remain unclear. Hence, we have designed this study to accumulate the experimental evidence in support of anti-diabetic effects of isoquercetin. Male albino Wistar rats were divided into seven groups. Rats (Groups 3-7) were administered a single intraperitoneal injection of streptozotocin (STZ; 40 mg/kg b.w) to induce diabetes mellitus. As an extension, STZ rats received isoquercetin at three different doses (20, 40 and 80 mg/kg b.w), and Group 7 rats received glibenclamide (standard drug) (600 mu g/kg b.w). The results showed that STZ exaggerated blood sugar, decreased insulin, altered metabolizing enzymes, and impaired the mRNA expression of insulin signaling genes and carbohydrate metabolizing enzyme genes. Supplementation with isoquercetin significantly normalized blood sugar levels, insulin and regulated the mRNA expression of insulin signaling genes and carbohydrate metabolizing enzyme genes. The results achieved with isoquercetin are similar to that of standard drug glibenclamide. The findings suggest isoquercetin could be a possible therapeutic agent for treating diabetes mellitus in the near future.
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