首页> 外文期刊>The Journal of Nutritional Biochemistry >Both low- and regular-fat cheeses mediate improved insulin sensitivity and modulate serum phospholipid profiles in insulin-resistant rats
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Both low- and regular-fat cheeses mediate improved insulin sensitivity and modulate serum phospholipid profiles in insulin-resistant rats

机译:低常规脂肪乳酪均介导改善的胰岛素敏感性和调节胰岛素抗性大鼠的血清磷脂曲线

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Dietary recommendations for cheese usually promote low (LOW)- over regular (REG)-fat versions due to the saturated fat. Conversely, epidemiological evidence shows that cheese consumption associates with reduced risk of type 2 diabetes. To investigate how cheese influences diabetes-related outcomes, a feeding trial comparing LOW and REG cheese was conducted in high-fat, lard-based diet (HFD)-fed insulin-resistant rats followed by evaluation of potential mechanisms. After 4 weeks of HFD, LOW or REG was added at 7 and 10 g/100 g diet, respectively, for another 8 weeks. Following either an oral glucose or insulin tolerance test to assess glucoregulation, rats were euthanized and serum was collected for metabolomic and lipid analyses. Hepatic tissue was used to measure glucoregulatory enzymes and lipid content. Both LOW and REG improved insulin sensitivity without effect on oral glucose tolerance, insulin secretion or body weight. Serum metabolomics identified 33 metabolites of interest, with 21 being phosphatidylcholines (PCs) or lysophosphatidylcholines (LPC5). HFD rats had significantly reduced LPC C16:1, C17:0, C18:1, C20:3 and C24:0, and these effects were normalized by LOW or REG cheese. Fourteen PC species were lowest in the HFD group and normalized by cheese feeding. Serum choline was elevated sevenfold in HFD-but not cheese-fed rats compared with rats fed low-fat diet. Liver triglyceride was elevated by LOW feeding. In conclusion, inclusion of both LOW and REG cheeses in the diet of insulin-resistant rats improves in vivo glucoregulation. This is associated with altered phospholipid metabolism, including cheese-mediated normalization of species that are decreased by high-fat feeding. (C) 2018 Elsevier Inc. All rights reserved.
机译:奶酪的膳食建议通常会促进由于饱和脂肪饱和的常规(REG) - 过度(reg)-fat版本。相反,流行病学证据表明奶酪消费伙伴患者减少2型糖尿病的风险。为了研究乳酪如何影响糖尿病相关结果,比较低牛奶干酪的喂养试验,以高脂肪,猪油的饮食(HFD)-FED胰岛素抗性大鼠进行,然后评估潜在机制。在HFD 4周后,分别在7和10g / 100g饮食中加入低或雷,另外8周。在口腔葡萄糖或胰岛素耐受性测试之后,评估葡糖调节,大鼠被安乐死,收集血清以进行代谢组和脂质分析。使用肝组织来测量葡糖性酶和脂质含量。低且雷高,胰岛素敏感性改善了口腔葡萄糖耐量,胰岛素分泌或体重的影响。血清代谢组学确定了33个感兴趣的代谢物,21例是磷脂酰胆碱(PCS)或溶血磷脂酰胆碱(LPC5)。 HFD大鼠显着降低了LPC C16:1,C17:0,C18:1,C20:3和C24:0,并且这些效应由低或REG奶酪标准化。 HFD组中有十四种PC物种最低,并由奶酪喂养标准化。与喂养低脂饮食的大鼠相比,血清胆碱在HFD - 但不是奶酪喂养的大鼠中升高了七倍。肝甘油三酯通过低喂养升高。总之,在胰岛素抗性大鼠饮食中纳入低和REG奶酪可改善体内葡萄糖。这与改变的磷脂代谢有关,包括通过高脂肪饲料减少的奶酪介导的物种的归一化。 (c)2018年Elsevier Inc.保留所有权利。

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