Stimulatory effect of apigenin-6-C-β-l-fucopyranoside on insulin secretion and glycogen synthesis

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• 作者：Luisa Helena Cazarolli ; Poliane Folador ; Henrique Hunger Moresco ; Inê ; s Maria Costa Brighente ; Moacir Geraldo Pizzolatti ; Fá ; tima Regina M. Barreto Silva
• 关键词：Flavonoid ; Insulin ; Diabetes ; Glycogen synthesis
• 刊名：European Journal of Medicinal Chemistry
• 出版年：2009
• 出版时间：November 2009
• 年：2009
• 卷：44
• 期：11
• 页码：4668-4673
• 全文大小：254 K

文摘

In vivo and in vitro treatments were carried out to investigate the effects of apigenin-6-C-β-l-fucopyranoside (1), isolated from Averrhoa carambola L. (Oxalidaceae), on serum glucose and insulin levels in hyperglycemic rats as well as its effect on glycogen synthesis in normal rat soleus muscle. Apigenin-6-C-β-l-fucopyranoside showed an acute effect on blood glucose lowering in hyperglycemic rats and stimulated glucose-induced insulin secretion. A stimulatory effect of 1 on glycogen synthesis was observed when muscles were incubated with this flavonoid and also its effect was completely nullified by pre-treatment with insulin signal transduction inhibitors. Taking this into account, the MAPK–PP1 and PI3K–GSK3 pathways are involved in the apigenin-6-C-β-l-fucopyranoside-induced increase in glycogen synthesis in muscle. This study provides evidence for dual effects of apigenin-6-C-β-l-fucopyranoside as an antihyperglycemic (insulin secretion) as well as an insulinomimetic (glycogen synthesis) agent.