Hormonal and nutritional regulation of postnatal hypothalamic development

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.