Pflügers Archiv - European Journal of Physiology

, Volume 465, Issue 12, pp 1687–1699

The central administration of C75, a fatty acid synthase inhibitor, activates sympathetic outflow and thermogenesis in interscapular brown adipose tissue

  • Priscila Cassolla
  • Ernane Torres Uchoa
  • Frederico Sander Mansur Machado
  • Juliana Bohnen Guimarães
  • Maria Antonieta Rissato Garófalo
  • Nilton de Almeida Brito
  • Lucila Leico Kagohara Elias
  • Cândido Celso Coimbra
  • Isis do Carmo Kettelhut
  • Luiz Carlos Carvalho Navegantes
Integrative physiology

DOI: 10.1007/s00424-013-1301-5

Cite this article as:
Cassolla, P., Uchoa, E.T., Mansur Machado, F.S. et al. Pflugers Arch - Eur J Physiol (2013) 465: 1687. doi:10.1007/s00424-013-1301-5

Abstract

The present work investigated the participation of interscapular brown adipose tissue (IBAT), which is an important site for thermogenesis, in the anti-obesity effects of C75, a synthetic inhibitor of fatty acid synthase (FAS). We report that a single intracerebroventricular (i.c.v.) injection of C75 induced hypophagia and weight loss in fasted male Wistar rats. Furthermore, C75 induced a rapid increase in core body temperature and an increase in heat dissipation. In parallel, C75 stimulated IBAT thermogenesis, which was evidenced by a marked increase in the IBAT temperature that preceded the rise in the core body temperature and an increase in the mRNA levels of uncoupling protein-1. As with C75, an i.c.v. injection of cerulenin, a natural FAS inhibitor, increased the core body and IBAT temperatures. The sympathetic IBAT denervation attenuated all of the thermoregulatory effects of FAS inhibitors as well as the C75 effect on weight loss and hypophagia. C75 induced the expression of Fos in the paraventricular nucleus, preoptic area, dorsomedial nucleus, ventromedial nucleus, and raphé pallidus, all of which support a central role of FAS in regulating IBAT thermogenesis. These data indicate a role for IBAT in the increase in body temperature and hypophagia that is induced by FAS inhibitors and suggest new mechanisms explaining the weight loss induced by these compounds.

Keywords

Brown adipose tissueFatty acid synthase inhibitorsThermogenesisSympathetic activation

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Priscila Cassolla
    • 1
  • Ernane Torres Uchoa
    • 1
  • Frederico Sander Mansur Machado
    • 2
  • Juliana Bohnen Guimarães
    • 2
  • Maria Antonieta Rissato Garófalo
    • 1
  • Nilton de Almeida Brito
    • 3
  • Lucila Leico Kagohara Elias
    • 1
  • Cândido Celso Coimbra
    • 2
  • Isis do Carmo Kettelhut
    • 4
  • Luiz Carlos Carvalho Navegantes
    • 1
  1. 1.Department of Physiology, School of Medicine of Ribeirão PretoUniversity of São PauloRibeirão PretoBrazil
  2. 2.Department of Physiology and Biophysics, Institute of Biological SciencesFederal University of Minas GeraisBelo HorizonteBrazil
  3. 3.Department of Physiological Sciences, Biological Sciences CenterState University of MaringáParanáBrazil
  4. 4.Department of Biochemistry and Immunology, School of Medicine of Ribeirão PretoUniversity of São PauloRibeirão PretoBrazil