Hormonal and nutritional regulation of postnatal hypothalamic development

Luba Sominsky1, Christine L Jasoni2, Hannah R Twigg2

  • 1School of Health and Biomedical SciencesRMIT University, Melbourne, Victoria, Australia.

Insights

The hypothalamus, crucial for appetite, stress, and reproduction, develops significantly after birth. Environmental factors during this perinatal period can alter its function, but adult brain plasticity offers hope for recovery.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Endocrinology

Background:

  • The hypothalamus regulates essential functions like appetite, stress, and reproduction.
  • Hypothalamic development starts prenatally and continues postnatally, with critical fine-tuning occurring during the perinatal period.
  • The perinatal environment can significantly impact hypothalamic development and adult function.

Purpose of the Study:

  • To review recent findings on postnatal development of hypothalamic metabolic, stress, and reproductive circuits in rodents.
  • To focus on perinatal programming of these circuits by hormonal and nutritional factors.
  • To explore evidence for continuous hypothalamic development in adult brains.

Main Methods:

  • Literature review of recent scientific knowledge.
  • Focus on rodent models for hypothalamic development.
  • Analysis of hormonal and nutritional influences during the perinatal period.

Main Results:

  • Postnatal milestones in hypothalamic circuit development are detailed.
  • Perinatal programming by hormones and nutrition significantly impacts hypothalamic function.
  • Adult neurogenesis, synaptogenesis, and epigenetic modifications indicate ongoing hypothalamic development.

Conclusions:

  • The hypothalamus undergoes significant postnatal development and is susceptible to perinatal environmental influences.
  • Adult hypothalamic plasticity, including neurogenesis and epigenetics, may allow for partial reversal of perinatal mal-programming.

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