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Neurotrophic factor in the central nervous system. Shinichi KOHSAKA 1 , Kazunari YOSHIDA 1 , Yukio IBATA 2 , Shigeo TOYA 2 , Yasuzo TSUKADA 1 1Department of Physiology, School of Medicine, Keio University 2Department of Neurosurgery, School of Medicine, Keio University pp.839-850
Published Date 1988/10/10
DOI https://doi.org/10.11477/mf.1431906232
  • Abstract
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Neurotrophic factors have been defined in terms of their effects on the development of neurons such as neuronal survival and neurite extension. Among a number of neurotrophic factors, the most exten-sively studied factor is Nerve Growth Factor (NGF). Accumulating evidence clearly indicates that NGF plays important roles in the development of cho-linergic neurons in the central nervous system (CNS) as well as the neural crest derived neurons in the peripheral nervous system. It is likely that many kinds of neurotrophic factors are involved in the regulation of neuronal development in the CNS. For example, basic Fibroblast Growth Factor (FGF) is recently reported to enhance the survival of CNS neurons both in vitro and in vivo studies. Our previous studies demonstrated that hippocampal extract from adult rat brain enhances the surviva-bility of cultured neurons from embryonic rat cerebral cortex. The neurotrophic factors in the hippocampus were found to be different from NGF and FGF, and one of the target cell is GABAergic neuron. Recent studies from our laboratory also indicated that astrocytes enhance the neuronal survival and the neurite outgrowth. The enhanced neurite outgrowth by astrocytes were revealed to be mediated by cell-cell contact.


Copyright © 1988, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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