Endocrinology, Vol 126, 3016-3021, Copyright © 1990 by Endocrine Society

ARTICLES

Second messengers involved in the regulation of corticotropin-releasing hormone mRNA and peptide in cultured rat fetal hypothalamic primary cultures

RL Emanuel, DM Girard, DL Thull and JA Majzoub
Department of Medicine, Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115.

Using primary cultures of dispersed rat fetal hypothalami, we studied the effect of forskolin and the phorbol ester 12-o-tetradecanoyl phorbol 13-acetate, activators of protein kinase A and C, respectively, on corticotropin-releasing hormone (CRH) regulation. CRH mRNA accumulation and peptide release were stimulated by both agents, indicating that the protein kinase A and protein kinase C messenger systems are involved in the regulation of CRH gene expression and are functional in hypothalamic neurons isolated from fetal brain.

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