Thyroid hormone action on lipid metabolism in humans: a role for endogenous insulin.

作者: M.J. Müller , K.J. Acheson , E. Jequier , A.G. Burger

DOI: 10.1016/0026-0495(90)90006-X

关键词: Internal medicineLipid metabolismKetone bodiesMetabolismBiologyEndocrinologyInsulinLipolysisFatty acidKetogenesisLipid oxidation

摘要: Abstract The effects of moderate hyperthyroidism on lipid metabolism were investigated in six healthy subjects before and after thyroxine treatment (300 μg/d). T4-treatment increased basal metabolic rate (+8%) glucose oxidation (+87%), without affecting oxidation, plasma free fatty acids, glycerol, β-hydroxybutyrate. During euthyroidism, a hypoinsulinaemic-euglycaemic 150-minute clamp protocol energy expenditure (+3%), (+42%), acids (+254%), glycerol (+232%), β-hydroxybutyrate (+343%), but decreased (−20%). Similar observed T4-treatment, induced disproportionate increases (+7%), (+310%), ketone body levels (+436%). We conclude that enhances hypoinsulinemia-induced lipolysis, acid recycling, ketogenesis oxidation. Thus insulin may camouflage some thyroid hormone action metabolism.

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