AJP - Endo AJP: Renal Physiology
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Am J Physiol Endocrinol Metab 266: E57-E61, 1994;
0193-1849/94 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Giustina, A.
Right arrow Articles by Negro-Vilar, A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Giustina, A.
Right arrow Articles by Negro-Vilar, A.

AJP - Endocrinology and Metabolism, Vol 266, Issue 1 E57-E61, Copyright © 1994 by American Physiological Society

ARTICLES

Physiological role of galanin in the regulation of anterior pituitary function in humans

A. Giustina, M. Licini, M. Schettino, M. Doga, G. Pizzocolo and A. Negro-Vilar
Cattedra di Clinica Medica and Chimica, University of Brescia, Italy.

The aim of our study was to elucidate the physiological role of the neuropeptide galanin in the regulation of anterior pituitary function in human subjects. Six healthy men (age range 26-35 yr, body mass index range 20-24 kg/m2) underwent in random order 1) an intravenous bolus injection of growth hormone-releasing hormone (GHRH)-(1-29)-NH2 (100 micrograms) + thyrotropin-releasing hormone (TRH, 200 micrograms) + luteinizing hormone-releasing hormone (LHRH, 100 micrograms) + corticotropin-releasing hormone (CRH, 100 micrograms), and 2) intravenous saline (100 ml) at time 0 plus either human galanin (500 micrograms) in saline (100 ml) or saline (100 ml) from -15 to +30 min. Human galanin determined a significant increase in serum GH (GH peak: 11.3 +/- 2.2 micrograms/l) from both baseline and placebo levels. No significant differences were observed between GH values after galanin and those after GHRH alone (24.3 +/- 5.2 micrograms/l). Human galanin significantly enhanced the GH response to GHRH (peak 49.5 +/- 10 micrograms/l) with respect to either GHRH or galanin alone. Human galanin caused a slight decrease in baseline serum adrenocorticotropic hormone (ACTH; 16.3 +/- 2.4 pg/ml) and cortisol levels (8 +/- 1.5 micrograms/dl). Galanin also determined a slight reduction in both the ACTH (peak 27 +/- 8 pg/ml) and cortisol (peak 13.8 +/- 1.3 micrograms/dl) responses to CRH. Baseline and releasing hormone-stimulated secretions of prolactin, thyroid-stimulating hormone, LH, and follicle-stimulating hormone were not altered by galanin. Our data suggest a physiological role for the neuropeptide galanin in the regulation of GH secretion in humans.(ABSTRACT TRUNCATED AT 250 WORDS)


This article has been cited by other articles:


Home page
 Physiol. Rev.Home page
M. E. Freeman, B. Kanyicska, A. Lerant, and G. Nagy
Prolactin: Structure, Function, and Regulation of Secretion
Physiol Rev, October 1, 2000; 80(4): 1523 - 1631.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Endocrinol. Metab.Home page
J. F. Todd, C. M. B. Edwards, M. A. Ghatei, and S. R. Bloom
The differential effects of galanin-(1---30) and -(3---30) on anterior pituitary hormone secretion in vivo in humans
Am J Physiol Endocrinol Metab, June 1, 2000; 278(6): E1060 - E1066.
[Abstract] [Full Text] [PDF]

Home page
 Physiol. Rev.Home page
E. E. Muller, V. Locatelli, and D. Cocchi
Neuroendocrine Control of Growth Hormone Secretion
Physiol Rev, April 1, 1999; 79(2): 511 - 607.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online