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The melanocortin system during fasting.

Fabrice Bertile1, Thierry Raclot

  • 1Centre d'Ecologie et Physiologie Energétiques, UPR 9010 CNRS, Associé à l'Université Louis Pasteur, 23 Rue Becquerel, 67087 Strasbourg Cedex 2, France. Fabrice.Bertile@c-strasbourg.fr

Peptides
|November 9, 2005
PubMed
Summary

The melanocortin system regulates feeding behavior and energy balance. This review explores its role during fasting, considering body fat levels and hormonal changes like leptin.

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Area of Science:

  • Neuroendocrinology
  • Metabolic regulation

Background:

  • The melanocortin system is crucial for energy homeostasis.
  • Feeding behavior is influenced by fasting and energy stores.

Purpose of the Study:

  • To review the melanocortin system's role in feeding behavior and energy balance during food deprivation.
  • To examine the impact of body fat status and peripheral hormones on this system.

Main Methods:

  • Literature review of studies on the melanocortin system.
  • Analysis of feeding behavior and energy balance regulation.
  • Examination of hormonal influences, including leptin.

Main Results:

  • Melanocortin signaling is implicated in the drive to refeed during prolonged fasting.
  • Leptin administration affects melanocortin gene expression in response to fat mobilization.

Conclusions:

  • The melanocortin system is a key regulator of feeding and energy balance under fasting conditions.
  • Hormonal signals, particularly leptin, modulate melanocortin system activity based on fat stores.

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