Journal article

Central Leptin Activates Mitochondrial Function and Increases Heat Production in Skeletal Muscle

Belinda A Henry, Zane B Andrews, Alexandra Rao, Iain J Clarke

ENDOCRINOLOGY | ENDOCRINE SOC | Published : 2011

Abstract

Leptin acts on the brain to increase postprandial heat production in skeletal muscle of sheep. To determine a mechanism for this effect, we examined the role of mitochondrial uncoupling and AMP-activated protein kinase (AMPK). Ovariectomized ewes (n=4/group) received infusion lines into the lateral cerebral ventricle, and leptin (10 μg/h) was infused to increase heat production in skeletal muscle. In animals that were program fed (1100-1600 h), skeletal muscle biopsies were taken after either central infusion of leptin or vehicle to measure the expression of uncoupling protein (UCP) mRNA and the phosphorylation status of AMPK. Respiratory function was also quantified in mitochondria isolated..

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University of Melbourne Researchers