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Related Experiment Videos

Nerve growth factor receptor-immunoreactive neurons within the developing human cortex.

J H Kordower1, E J Mufson

  • 1Department of Neurological Sciences, Rush Presbyterian/St. Lukes Medical Center, Chicago, Illinois 60612.

The Journal of Comparative Neurology
|September 1, 1992
PubMed
Summary

Nerve Growth Factor (NGF) receptors are transiently expressed in developing human cortical neurons, particularly in the subplate zone. This suggests neurotrophins like NGF are crucial for neuronal viability and guiding brain connections.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Neuroanatomy

Background:

  • The developing human brain relies on complex signaling pathways for neuronal development and organization.
  • Nerve Growth Factor (NGF) and its receptors are implicated in neuronal survival and differentiation.
  • The role of NGF receptors in specific neuronal populations during human cortical development requires detailed investigation.

Purpose of the Study:

  • To investigate the spatiotemporal expression pattern of NGF receptors in the developing human cerebral cortex and hippocampal complex.
  • To elucidate the potential role of NGF signaling in the transient neuronal populations of the developing cortex.

Main Methods:

  • Immunohistochemistry using a monoclonal antibody against the p75 receptor for NGF.
  • Analysis of human embryonic and pediatric brain specimens (16 weeks to 5 years).

Related Experiment Videos

  • Microscopic examination of NGF receptor expression in neocortical, limbic, paralimbic, and hippocampal regions.

    • Main Results:

    • Transient expression of NGF receptors was observed in subplate neurons of the neo-, limbic, and paralimbic cortices between embryonic weeks 16-26.
    • NGF receptor-immunoreactive neurons showed specific topographic distribution, with higher concentrations in limbic/paralimbic areas and association neocortex.
    • Neurons in the germinal zone and cortical plate remained immunonegative for NGF receptors throughout development.

    Conclusions:

    • The transient expression of NGF receptors in subplate neurons suggests a critical role for neurotrophins in their survival.
    • NGF signaling may be involved in guiding the topographic organization of afferent inputs to the developing cerebral cortex.
    • These findings highlight the importance of NGF in the intricate processes of human brain development.