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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Dietary Supplementation with a-Amylase Inhibitor Wheat Albumin to High-Fat Diet-Induced Insulin-Resistant Rats Is Associated with Increased Expression of Genes Related to Fatty Acid Synthesis in Adipose Tissue
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Dietary Supplementation with a-Amylase Inhibitor Wheat Albumin to High-Fat Diet-Induced Insulin-Resistant Rats Is Associated with Increased Expression of Genes Related to Fatty Acid Synthesis in Adipose Tissue

机译:饮食向高脂饮食诱导的胰岛素抵抗大鼠补充α-淀粉酶抑制剂小麦白蛋白与脂肪组织中脂肪酸合成相关基因的表达增加有关

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摘要

It is well-known that insulin resistance induces lipid abnormalities by decreasing insulin actions in adipose tissue. This study examined the effects of inhibiting postprandial hyperglycemia/hyperin-sulinemia, using the α-amylase inhibitor wheat albumin (WA), on the expression of genes related to fatty acid metabolism in the adipose tissue of high-fat diet-induced insulin-resistant rats. Postprandial glucose and insulin levels were significantly lower after oral starch loading with WA than with inactivated WA in insulin-resistant rats: In addition, the increases in the plasma triacylglycerol and insulin levels by feeding insulin-resistant rats a control diet were inhibited by WA supplementation. Supplementation with WA increased the mRNA levels of not only fatty acid synthase (FAS) and acyl-CoA carboxylase (ACC) but also their transcriptional factors such as carbohydrate response element-binding protein (ChREBP) and sterol regulatory element binding protein (SREBP)1 in the mesenteric adipose tissue of the insulin-resistant rats. In addition, supplementation with WA tended to increase the protein expression levels of FAS and ACCs. These results suggest that reductions in the plasma triacylglycerol and insulin levels by inhibiting hyperglycemia/hyperinsulinemia with the α-amylase inhibitor WA in high-fat diet-induced Insulin-resistant rats are associated with increased expression of genes related to fatty acid synthesis and their transcriptional factors in adipose tissue.
机译:众所周知,胰岛素抵抗通过减少脂肪组织中的胰岛素作用而引起脂质异常。这项研究探讨了使用α-淀粉酶抑制剂小麦白蛋白(WA)抑制餐后高血糖/高蛋白-胰岛素血症对高脂饮食诱导的胰岛素抵抗脂肪组织中脂肪酸代谢相关基因表达的影响大鼠。胰岛素抵抗的大鼠口服淀粉后,餐后葡萄糖和胰岛素水平显着低于灭活的WA:此外,通过补充WA抑制胰岛素抵抗的大鼠作为对照饮食喂养,血浆三酰甘油和胰岛素水平的升高被抑制。补充WA不仅增加了脂肪酸合酶(FAS)和酰基辅酶A羧化酶(ACC)的mRNA水平,而且还提高了它们的转录因子,例如碳水化合物反应元件结合蛋白(ChREBP)和固醇调节元件结合蛋白(SREBP)1在胰岛素抵抗大鼠的肠系膜脂肪组织中此外,补充WA倾向于增加FAS和ACC的蛋白质表达水平。这些结果表明,在高脂饮食诱导的胰岛素抵抗大鼠中,通过使用α-淀粉酶抑制剂WA抑制高血糖/高胰岛素血症,降低血浆三酰甘油和胰岛素水平与脂肪酸合成及其转录相关基因的表达增加有关。脂肪组织中的因素。

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