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Related Experiment Videos

NGF expression in the developing rat brain: effects of maternal separation.

F Cirulli1, E Alleva, A Antonelli

  • 1Section of Behavioural Pathophysiology, Laboratorio di Fisiopatologia di Organo e di Sistema, Istituto Superiore di Sanità, Viale Regina Elena 299, I-00161 Rome, Italy. cirulli@iss.it

Brain Research. Developmental Brain Research
|October 24, 2000
PubMed
Summary

Maternal separation in rats increases Nerve Growth Factor (NGF) levels in the brain. Longer separations and different developmental ages amplify these effects, highlighting environmental impacts on neurotrophic factors and brain plasticity.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Behavioral Science

Background:

  • Mothering style influences adult neuroendocrine, neurochemical, and behavioral outcomes in rodents.
  • Long-term neuronal changes may stem from altered neurotrophin expression, like Nerve Growth Factor (NGF).
  • NGF is crucial for the development of peripheral and central nervous system neurons.

Purpose of the Study:

  • Investigate the mechanisms linking maternal care to adult neurobiological changes.
  • Examine the impact of varying maternal separation durations and ages on NGF expression.
  • Determine if NGF alterations are confined to the hippocampus or present in other brain regions.

Main Methods:

  • Utilized a maternal separation paradigm in neonatal rats.

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  • Separated pups for extended periods (up to 3 hours).
  • Assessed NGF expression at different postnatal ages (9 and 16 days).

    • Main Results:

    • Maternal separation significantly increased NGF expression.
    • Longer separation durations resulted in more pronounced NGF expression changes.
    • NGF alterations were observed in brain areas beyond the hippocampus.
    • Effects varied based on the age of separation.

    Conclusions:

    • External factors, such as maternal presence, modulate neurotrophic factor availability.
    • Nerve Growth Factor (NGF) plays a role in environmentally-mediated brain plasticity during development.
    • These findings contribute to understanding the neurobiological underpinnings of early life experiences.