Differential Actions of Neurotrophins in the Locus Coeruleus and Basal Forebrain

W. J. Friedman, C. F. Ibáňez, F. Hallböök, H. Persson, L. D. Cain, C. F. Dreyfus, I. B. Black

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    Abstract

    The neurotrophin gene family, including nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), neurotrophin-3 (NT-3), and NT-4/NT-5, supports the survival of distinct peripheral neurons, however, actions upon central neurons are relatively undefined. In this study we have compared different neurotrophins in the regulation of neuronal survival and function using dissociated embryonic cell cultures from two brain regions, the basal forebrain (BF) and locus coeruleus (LC). In the BF, NGF increased choline acetyl transferase (ChAT) activity, but did not influence cholinergic cell survival. In contrast to NGF, BDNF, NT-3, and the novel neurotrophin, NT-4, all increased ChAT activity and cholinergic cell survival. We also examined embryonic LC neurons in culture. LC neurons are unresponsive to NGF. In contrast, NT-3 and NT-4 elicited significant increases in survival of noradrenergic LC neurons, the first demonstration of trophic effects in this critical brain region. Identification of factors supporting coerulcal and basal forebrain neuronal survival may provide insight into mechanisms mediating degeneration of these disparate structures in clinical disorders.

    Original languageEnglish (US)
    Pages (from-to)72-78
    Number of pages7
    JournalExperimental Neurology
    Volume119
    Issue number1
    DOIs
    StatePublished - Jan 1993

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    ASJC Scopus subject areas

    • Neurology
    • Developmental Neuroscience

    Cite this

    Friedman, W. J., Ibáňez, C. F., Hallböök, F., Persson, H., Cain, L. D., Dreyfus, C. F., & Black, I. B. (1993). Differential Actions of Neurotrophins in the Locus Coeruleus and Basal Forebrain. Experimental Neurology, 119(1), 72-78. https://doi.org/10.1006/exnr.1993.1007