title: Role of glucocorticoids in the neuroregulation of growth hormone secretion.
abstract: Elevated glucocorticoid (GC) levels produce a marked impairment in somatic growth in both rodents and primates. In addition, GC play an important role in the regulation of growth hormone (GH) synthesis and secretion. Blunted GH response to stimulation tests in conditions of chronic exposure to excessive cortisol secretion or administration are well documented. In contrast, acute administration of GC to normal human subjects induces a transient increase in plasma GH levels. This dual action of GC on GH secretion is probably due to the fact that they act at different loci; i.e. in the regulation of GH transcription and GHRH and somatostatin receptors at the pituitary level as well as GHRH, somatostatin and GH receptor gene expression at the hypothalamic level.
authors.affiliation: Department of Physiology, Faculty of Medicine, Complejo Hospitalario Universitario, University of Santiago, Santiago de Compostela, Spain.
authors.forename: C
authors.initials: C
authors.lastname: Dieguez
authors.forename: F
authors.initials: F
authors.lastname: Mallo
authors.forename: R
authors.initials: R
authors.lastname: Señaris
authors.forename: J
authors.initials: J
authors.lastname: Pineda
authors.forename: P
authors.initials: P
authors.lastname: Martul
authors.forename: A
authors.initials: A
authors.lastname: Leal-Cerro
authors.forename: M
authors.initials: M
authors.lastname: Pombo
authors.forename: F F
authors.initials: FF
authors.lastname: Casanueva
mesh_terms: D000818:Animals; D005938:Glucocorticoids / Q000494:pharmacology / Q000502:physiology*; D013006:Growth Hormone / Q000096:biosynthesis / Q000378:metabolism*; D006801:Humans; D009424:Nervous System Physiological Phenomena
chemical_list: D005938:Glucocorticoids; D013006:Growth Hormone