Neuropeptides as positive or negative neuronal growth regulatory factors: Effects of ACTH and Leu-enkephalin on cultured serotonergic neurons

M. I. Davila-Garcia, E. C. Azmitia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In summary, we have presented evidence that neuropeptides can function as either positive or negative growth regulatory factors during development. The ACTH family of peptides appear to act predominantly as a positive growth regulatory factor - enhancing neurite outgrowth, cell survival, biochemical maturation and behavioral expression. These effects of ACTH are most pronounced prior to the time the afferent cell has reached its target. Thus, ACTH may act as a low level general neurotrophic growth regulatory factor. The opioids have the opposite effect. These neuropeptides inhibit neurite extension, cell survival, and biochemical maturation. The effects of these negative growth regulatory factors are observed when the afferents have reached their targets. The action of the opioids is thought to occur through specific receptors and known second messenger systems. Thus, CNS neuropeptide levels can have important actions in regulating the development of a variety of CNS systems, and permanently influencing the structure and function of the brain.

Original languageEnglish (US)
Title of host publicationAdvances in Experimental Medicine and Biology
Pages75-92
Number of pages18
DOIs
StatePublished - 1990

Publication series

NameAdvances in Experimental Medicine and Biology
Volume265

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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    Davila-Garcia, M. I., & Azmitia, E. C. (1990). Neuropeptides as positive or negative neuronal growth regulatory factors: Effects of ACTH and Leu-enkephalin on cultured serotonergic neurons. In Advances in Experimental Medicine and Biology (pp. 75-92). (Advances in Experimental Medicine and Biology; Vol. 265). https://doi.org/10.1007/978-1-4757-5876-4_7