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Cafestol, a Bioactive Substance in Coffee, Has Antidiabetic Properties in KKAy Mice
Journal of Natural Products ( IF 3.3 ) Pub Date : 2017-08-01 00:00:00 , DOI: 10.1021/acs.jnatprod.7b00395
Fredrik Brustad Mellbye 1 , Per Bendix Jeppesen 1 , Pedram Shokouh 2, 3 , Christoffer Laustsen 4 , Kjeld Hermansen 1 , Søren Gregersen 1
Affiliation  

Daily coffee consumption is inversely associated with risk of type-2 diabetes (T2D). Cafestol, a bioactive substance in coffee, increases glucose-stimulated insulin secretion in vitro and increases glucose uptake in human skeletal muscle cells. We hypothesized that cafestol can postpone development of T2D in KKAy mice. Forty-seven male KKAy mice were randomized to consume chow supplemented daily with either 1.1 (high), 0.4 (low), or 0 (control) mg of cafestol for 10 weeks. We collected blood samples for fasting glucose, glucagon, and insulin as well as liver, muscle, and fat tissues for gene expression analysis. We isolated islets of Langerhans and measured insulin secretory capacity. After 10 weeks of intervention, fasting plasma glucose was 28–30% lower in cafestol groups compared with the control group (p < 0.01). Fasting glucagon was 20% lower and insulin sensitivity improved by 42% in the high-cafestol group (p < 0.05). Cafestol increased insulin secretion from isolated islets by 75–87% compared to the control group (p < 0.001). Our results show that cafestol possesses antidiabetic properties in KKAy mice. Consequently, cafestol may contribute to the reduced risk of developing T2D in coffee consumers and has a potential role as an antidiabetic drug.

中文翻译:

Cafestol是咖啡中的一种生物活性物质,对KKAy小鼠具有抗糖尿病作用

每天喝咖啡与2型糖尿病(T2D)的风险成反比。Cafestol是咖啡中的一种生物活性物质,可在体外增加葡萄糖刺激的胰岛素分泌并增加人体骨骼肌细胞中的葡萄糖摄取。我们假设咖啡因可以延缓KKAy小鼠中T2D的发展。将47只雄性KKAy小鼠随机分为10周,每天补充1.1(高),0.4(低)或0(对照)咖啡因的补充食物。我们收集了空腹血糖,胰高血糖素和胰岛素以及肝脏,肌肉和脂肪组织的血液样本,用于基因表达分析。我们分离了朗格汉斯岛,并测量了胰岛素分泌能力。干预10周后,cafestol组的空腹血糖较对照组降低了28-30%(p <0.01)。高cafestol组的空腹胰高血糖素降低了20%,胰岛素敏感性提高了42%(p <0.05)。与对照组相比,Cafestol使离体胰岛的胰岛素分泌增加75-87%(p <0.001)。我们的结果表明,咖啡甾醇在KKAy小鼠中具有抗糖尿病特性。因此,咖啡甾醇可能有助于降低咖啡消费者中患T2D的风险,并具有作为抗糖尿病药的潜在作用。
更新日期:2017-08-01
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