Postnatal development of hypothalamic leptin receptors

Elizabeth C Cottrell, Julian Mercer, Susan E Ozanne

Research output: Chapter in Book/Report/Conference proceedingChapter

24 Citations (Scopus)

Abstract

The hormone, leptin, plays a key role in the regulation of energy balance and neuroendocrine function, as well as modulating a range of other physiological systems from immunity to cognition. In the adult brain, leptin regulates food intake and energy expenditure primarily via the hypothalamus. In addition to these well-defined actions in adult life, there is increasing evidence for a role of leptin during development. Leptin receptors are widely expressed in the developing brain from an early stage, and leptin is known to have profound effects on the proliferation, maintenance, and differentiation of neuronal and glial cells. During the early postnatal period, in both rats and mice, there is a surge in circulating leptin concentrations. Despite this elevation in leptin, neonates maintain a high level of food intake, and both feeding behavior and metabolic responses to exogenous leptin administration are absent until around the time of weaning. However, it is during this period that direct neurotrophic actions of leptin have been demonstrated, with leptin promoting neurite outgrowth and the establishment of hypothalamic circuitry. Exactly how leptin exerts these effects remains unknown, but changes in the distribution of hypothalamic leptin receptors during this period may, at least in part, underlie these age-specific effects of leptin.
Original languageEnglish
Title of host publicationHormones of the Limbic System
EditorsGerald Litwack
PublisherAcademic Press
Pages201-217
Number of pages17
Volume82
ISBN (Print)9780123815156
DOIs
Publication statusPublished - 7 Jul 2010

Publication series

NameVitamins and Hormones
PublisherAcademic Press
Volume82

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Keywords

  • animals
  • animals, newborn
  • energy metabolism
  • humans
  • hypothalamus
  • leptin
  • mice
  • rats
  • receptors, leptin

Cite this

Cottrell, E. C., Mercer, J., & Ozanne, S. E. (2010). Postnatal development of hypothalamic leptin receptors. In G. Litwack (Ed.), Hormones of the Limbic System (Vol. 82, pp. 201-217). (Vitamins and Hormones; Vol. 82). Academic Press. https://doi.org/10.1016/S0083-6729(10)82011-4