Exposure to a high-fat diet alters leptin sensitivity and elevates renal sympathetic nerve activity and arterial pressure in rabbits

Larissa J Prior, Nina Eikelis, James Armitage, Pamela J Davern, Sandra L Burke, Jean-Pierre Montani, Benjamin Barzel, Geoffrey A Head

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118 Citations (Scopus)

Abstract

The activation of the sympathetic nervous system through the central actions of the adipokine leptin has been suggested as a major mechanism by which obesity contributes to the development of hypertension. However, direct evidence for elevated sympathetic activity in obesity has been limited to muscle. The present study examined the renal sympathetic nerve activity and cardiovascular effects of a high-fat diet (HFD), as well as the changes in the sensitivity to intracerebroventricular leptin. New Zealand white rabbits fed a 13.5 HFD for 4 weeks showed modest weight gain but a 2- to 3-fold greater accumulation of visceral fat compared with control rabbits. Mean arterial pressure, heart rate, and plasma norepinephrine concentration increased by 8 , 26 , and 87 , respectively (P
Original languageEnglish
Pages (from-to)862 - 868
Number of pages7
JournalHypertension
Volume55
Issue number4
DOIs
Publication statusPublished - 2010

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