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首页> 外文期刊>Prostaglandins, Leukotrienes, and Essential Fatty Acids >Fish oil reverses the altered glucose transporter, phosphorylation, insulin receptor substrate-1 protein level and lipid contents in the skeletal muscle of sucrose-rich diet fed rats
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Fish oil reverses the altered glucose transporter, phosphorylation, insulin receptor substrate-1 protein level and lipid contents in the skeletal muscle of sucrose-rich diet fed rats

机译:鱼油可逆转富含蔗糖的饮食喂养大鼠骨骼肌中葡萄糖转运蛋白,磷酸化,胰岛素受体底物1蛋白水平和脂质含量的改变

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The role and underlying mechanisms by which n-3 polyunsaturated fatty acids (PUFA) prevent/reverse SRD-induced insulin resistance (IR) in the muscle are not completely understood. Therefore, we examined: triglyceride, diacylglycerol, PKC??, Glut-4, enzymatic hexokinase activity, IRS-1 protein mass level, and fatty acid composition of muscle phospholipids. Rats were fed a SRD during 6 months. Thereafter, half the animals continued with SRD up to 8 months; the other half was fed a SRD in which CO (8%. wt/wt) was replaced by FO (7%+1% CO) for 2 months. Results were compared with those obtained in rats fed a control diet (CD). In SRD-fed rats, FO oil normalized/improved lipid storage and PKC?? protein mass level. Effects of insulin were comparable with those of CD-fed rats. FO reversed impaired glucose phosphorylation, IRS-1, and, under insulin stimulation, Glut-4 protein mass level. FO normalized insulin resistance and increased n-3 PUFAs in muscle phospholipids. ? 2012 Elsevier Ltd.
机译:n-3多不饱和脂肪酸(PUFA)预防/逆转SRD诱导的肌肉中胰岛素抵抗(IR)的作用和潜在机制尚不完全清楚。因此,我们检查了:甘油三酸酯,二酰基甘油,PKCα,Glut-4,酶促己糖激酶活性,IRS-1蛋白质量水平和肌肉磷脂的脂肪酸组成。在6个月内给大鼠喂食SRD。此后,一半的动物继续SRD长达8个月。另一半喂食SRD,其中CO(8%。wt / wt)被FO(7%+ 1%CO)替代2个月。将结果与饲喂对照饮食(CD)的大鼠进行比较。在SRD喂养的大鼠中,FO油可正常化/改善脂质存储和PKC?蛋白质质量水平。胰岛素的作用与CD喂养的大鼠相当。 FO逆转了受损的葡萄糖磷酸化IRS-1,并在胰岛素刺激下逆转了Glut-4蛋白的质量水平。 FO使胰岛素抵抗正常化,肌肉磷脂中n-3 PUFA升高。 ? 2012爱思唯尔有限公司

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