Cited by 1,253Growth Hormone and Insulin-like Growth FactorsHypothalamic control of reproductive hormonesPituitary Gland Disorders and Treatments

Pathophysiology of the Neuroregulation of Growth Hormone Secretion in Experimental Animals and the Human*

Giustina, Andrea, Veldhuis, Johannes D.·1998·Endocrine Reviews

Abstract

During the last decade, the GH axis has become the compelling focus of remarkably active and broad-ranging basic and clinical research. Molecular and genetic models, the discovery of human GHRH and its receptor, the cloning of the GHRP receptor, and the clinical availability of recombinant GH and IGF-I have allowed surprisingly rapid advances in our knowledge of the neuroregulation of the GH-IGF-I axis in many pathophysiological contexts. The complexity of the GHRH/somatostatin-GH-IGF-I axis thus commends itself to more formalized modeling (154, 155), since the multivalent feedback-control activities are difficult to assimilate fully on an intuitive scale. Understanding the dynamic neuroendocrine mechanisms that direct the pulsatile secretion of this fundamental growth-promoting and metabolic hormone remains a critical goal, the realization of which is challenged by the exponentially accumulating matrix of experimental and clinical data in this arena. To the above end, we review here the pathophysiology of the GHRH somatostatin-GH-IGF-I feedback axis consisting of corresponding key neurotransmitters, neuromodulators, and metabolic effectors, and their cloned receptors and signaling pathways. We propose that this system is best viewed as a multivalent feedback network that is exquisitely sensitive to an array of neuroregulators and environmental stressors and genetic restraints. Feedback and feedforward mechanisms acting within the intact somatotropic axis mediate homeostatic…

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Crossref · 10.1210/edrv.19.6.0353

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Authors
Giustina, A., & Veldhuis, J. D.
Affiliations
  • University of Brescia (IT)
  • University of Virginia (US)
Venue
Endocrine Reviews
Published
1998-12-01
Volume
19
Issue
6
Pages
717-797
ISSN
  • 0163-769X (ISSN-L)
  • 1945-7189
OpenAlex
W2002748611
Cited by
1,253
References
26
Citations by year
2026: 6 · 2025: 16 · 2024: 25 · 2023: 29 · 2022: 29 · 2021: 30 · 2020: 31 · 2019: 35 · 2018: 39 · 2017: 29 · 2016: 30 · 2015: 47 · 2014: 43 · 2013: 43 · 2012: 37
FWCI
9.63
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrine Reviews (publishedVersion)
  • PubMed (publishedVersion)
  • Archivio Istituzionale della Ricerca - Università Vita-Salute San Raffaele (submittedVersion)
Funders
  • National Institutes of Health (1r03ag014873-01)
  • National Institute on Aging (R01 AG 147991, R03-AG148-73)
  • National Center for Research Resources (RR 00847, M01RR000847)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Pituitary Gland Disorders and Treatments
Keywords
growth hormone secretion, neuroendocrine regulation, growth hormone-releasing hormone, somatostatin, insulin-like growth factor I, somatotropic axis, pulsatile hormone secretion, feedback control, growth hormone receptor
MeSH terms
Animals, Disease Models, Animal, Humans, Hypothalamic Diseases, Pituitary Diseases, Growth Hormone, Receptors, Neurotransmitter

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