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投稿时间:2023-04-21
投稿时间:2023-04-21
中文摘要: 以蓝靛果花青素为原料,评价蓝靛果花青素的体内外降血糖作用,从IRS1-PI3K-AKt 信号通路关键酶和细胞因子调控角度探讨蓝靛果花青素的降血糖作用机制。实验结果表明,蓝靛果花青素对α-葡萄糖苷酶和α-淀粉酶的活性产生抑制作用,抑制率分别为76.92%和74.85%。蓝靛果花青素可降低糖尿病小鼠血糖水平(与模型组相比,高剂量组降低26.01%),降低糖耐量值(与模型组相比,高剂量组降低25.98%),提高肝脏糖原的储存能力,提高己糖激酶(hexokinase,HK)活性,抑制葡萄糖-6-磷酸酶(glucose-6-phosphatase,G-6-Pase)和磷酸烯醇丙酮酸羧激酶(phosphoenolpyruvate carboxykinase,PEPCK)活性,下调FoxO1、G6PC、PEPCK 和GSK-3β mRNA 表达量,上调IRS1、PI3K 和AKt mRNA 表达量,通过激活IRS1-PI3K-AKt 信号通路,抑制糖异生过程,调节糖代谢紊乱,发挥降血糖作用。
中文关键词: 蓝靛果 花青素 降血糖 胰岛素抵抗 IRS1-PI3K-AKt 信号通路
Abstract:The hypoglycemic activity of anthocyanins from Lonicera caerulea was investigated in vivo and in vitro. The mechanism of the hypoglycemic activity was investigated from the perspective of the regulation of key enzymes and cytokines in the IRS1-PI3K-AKt signaling pathway. The experimental results showed that anthocyanins from L.caerulea inhibited the activity of α-glucosidase and α-amylase,with inhibition rates of 76.92% and 74.85% respectively. Anthocyanins from L. caerulea could reduce blood glucose levels in diabetic mice(a 26.01% reduction in the high-dose group compared to the model group),decrease glucose tolerance values(a 25.98% reduction in the high-dose group compared to the model group),enhance liver glycogen storage capacity,increase hexokinase(HK)activity,inhibit glucose-6-phosphatase(G-6-Pase)and phosphoenolpyruvate carboxykinase(PEPCK)activity,downregulate the mRNA expression of FoxO1,G6PC,PEPCK,and GSK-3β,and upregulate the mRNA expression of IRS1,PI3K,and AKt. By activating the IRS1-PI3K-AKt signaling pathway,anthocyanins from L. caerulea inhibited gluconeogenesis,regulate glucose metabolism disorders,and exert hypoglycemic effects.
keywords: Lonicera caerulea anthocyanin hypoglycemic activities insulin resistance IRS1-PI3K-AKt signaling pathway
文章编号:202418009 中图分类号: 文献标志码:
基金项目:吉林省科技发展计划项目(20200702052NC)
作者 | 单位 |
曹柏营1,王家利2,侯宇2,杨海蛟3,于佳鑫1,钟雪松1 | 1.吉林工程技术师范学院生物与食品工程学院,吉林 长春 130052;2.吉林省产品质量监督检验院,吉林 长春 130103;3.敦煌市市场监督管理局,甘肃 敦煌 736200 |
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