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Mechanisms Preserving Insulin Action during High Dietary Fat Intake

机译:在高膳食脂肪摄入期间保持胰岛素作用的机制

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摘要

Prolonged intervention studies investigating molecular metabolism are necessary for a deeper understanding of dietary effects on health. Here we provide mechanistic information about metabolic adaptation to fat-rich diets. Healthy, slightly overweight men ingested saturated or polyunsaturated fat-rich diets for 6 weeks during weight maintenance. Hyperinsulinemic clamps combined with leg balance technique revealed unchanged peripheral insulin sensitivity, independent of fatty acid type. Both diets increased fat oxidation potential in muscle. Hepatic insulin clearance increased, while glucose production, de novo lipogenesis, and plasma triacylglycerol decreased. High fat intake changed the plasma proteome in the immune-supporting direction and the gut microbiome displayed changes at taxonomical and functional level with polyunsaturated fatty acid (PUFA). In mice, eucaloric feeding of human PUFA and saturated fatty acid diets lowered hepatic triacylglycerol content compared with low-fat-fed control mice, and induced adaptations in the liver supportive of decreased gluconeogenesis and lipogenesis. Intake of fat-rich diets thus induces extensive metabolic adaptations enabling disposition of dietary fat without metabolic complications.
机译:调查分子代谢的延长干预研究对于更深入地了解对健康的饮食影响是必要的。在这里,我们提供有关富含脂肪饮食的代谢适应机制信息。健康,略微超重的男性在重量维护期间摄取饱和或多不饱和脂肪的饮食6周。高胰岛素纤维素夹与腿部平衡技术结合揭示了不变的外周胰岛素敏感性,与脂肪酸类型无关。两种饮食增加了肌肉中的脂肪氧化潜力。肝脏胰岛素清除增加,而葡萄糖生产,DE Novo脂肪生成和血浆三酰基甘油的降低。高脂摄入量在免疫支撑方向上改变了血浆蛋白质,肠道微生物组在分类和功能水平下显示出与多不饱和脂肪酸(PUFA)的变化。在小鼠中,与低脂肪喂养的对照小鼠相比,人PUFA和饱和脂肪酸饮食的eucalic饲养降低了肝三酰基甘油含量,并在肝脏和脂肪发生降低的肝脏诱导适应性。因此摄入富含脂肪的饮食,因此诱导广泛的代谢适应,从不具有代谢并发症的膳食脂肪。

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  • 来源
    《Cell metabolism》 |2019年第1期|共18页
  • 作者单位

    Univ Copenhagen Fac Sci Dept Nutr Exercise &

    Sports Sect Mol Physiol Univ Pk 13 DK-2100;

    Univ Copenhagen Dept Biol Lab Genom &

    Mol Biomed Copenhagen Denmark;

    Univ Copenhagen Fac Sci Dept Nutr Exercise &

    Sports Sect Mol Physiol Univ Pk 13 DK-2100;

    Hvidovre Univ Hosp Dept Endocrinol Hvidovre Denmark;

    Inst Marine Res Bergen Norway;

    Inst Marine Res Bergen Norway;

    Univ Copenhagen Dept Biol Lab Genom &

    Mol Biomed Copenhagen Denmark;

    Univ Copenhagen Fac Sci Dept Nutr Exercise &

    Sports Sect Mol Physiol Univ Pk 13 DK-2100;

    Univ Copenhagen Fac Sci Dept Nutr Exercise &

    Sports Sect Mol Physiol Univ Pk 13 DK-2100;

    Univ Copenhagen Fac Sci Dept Nutr Exercise &

    Sports Sect Mol Physiol Univ Pk 13 DK-2100;

    Max Planck Inst Biochem Dept Prote &

    Signal Transduct Munich Germany;

    Max Planck Inst Biochem Dept Prote &

    Signal Transduct Munich Germany;

    Univ Copenhagen Fac Hlth &

    Med Sci Ctr Prot Res Novo Nordisk Fdn Clin Prote Copenhagen Denmark;

    Univ Copenhagen Ctr Basic Metab Res Novo Nordisk Fdn Fac Hlth &

    Med Sci Copenhagen Denmark;

    Univ Copenhagen Dept Biol Lab Genom &

    Mol Biomed Copenhagen Denmark;

    Univ Copenhagen Dept Biol Lab Genom &

    Mol Biomed Copenhagen Denmark;

    Univ Copenhagen Fac Sci Dept Nutr Exercise &

    Sports Sect Mol Physiol Univ Pk 13 DK-2100;

    Univ Copenhagen Fac Sci Dept Nutr Exercise &

    Sports Sect Mol Physiol Univ Pk 13 DK-2100;

    Univ Copenhagen Fac Sci Dept Nutr Exercise &

    Sports Sect Mol Physiol Univ Pk 13 DK-2100;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 内分泌腺疾病及代谢病;
  • 关键词

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