Ghrelin's Endocrine and Non-Endocrine Actions: GH Release, Appetite, Adiposity, and Cardioprotection
Ghrelin's effects extend far beyond GH release to include potent appetite stimulation, adipogenic activity, and direct cardiovascular protection — making it a multi-system metabolic hormone.
Quick Facts
What This Study Found
Ghrelin displays endocrine (GH release) and non-endocrine (appetite stimulation, adipogenesis, cardioprotection) activities, with cardiovascular protection mediated by both acyl and des-acyl forms — a multi-system metabolic hormone.
Key Numbers
How They Did This
Review of ghrelin biology covering GH-releasing, orexigenic, adipogenic, and cardiovascular protective effects in animal and human studies.
Why This Research Matters
Clinical use of GH secretagogues must account for ghrelin's diverse effects. The cardiovascular protection from even des-acyl ghrelin opens unexpected therapeutic opportunities.
The Bigger Picture
Ghrelin exemplifies how single peptide hormones evolved to coordinate multiple body systems — linking nutritional status (appetite) with growth (GH) and cardiovascular function (cardioprotection).
What This Study Doesn't Tell Us
Review from 2002 when some ghrelin functions were still being characterized. Therapeutic applications were largely conceptual.
Questions This Raises
- ?Can ghrelin's beneficial effects be separated from harmful ones?
- ?Could des-acyl ghrelin be a pure cardioprotective without metabolic effects?
- ?How does the body balance ghrelin's appetite-increasing with cardioprotective effects?
Trust & Context
- Key Stat:
- 4 major effects One peptide does four things: releases GH, stimulates appetite, promotes fat storage, and protects the heart — coordinating metabolism across the body
- Evidence Grade:
- Moderate evidence from a comprehensive review synthesizing diverse ghrelin biology data.
- Study Age:
- Published in 2002. All four major ghrelin functions described have been extensively validated in the subsequent two decades.
- Original Title:
- Ghrelin: endocrine and non-endocrine actions.
- Published In:
- Journal of pediatric endocrinology & metabolism : JPEM, 15 Suppl 5, 1219-27 (2002)
- Authors:
- Broglio, Fabio(8), Arvat, Emanuela(5), Benso, Andrea(4), Papotti, Mauro, Muccioli, Giampiero, Deghenghi, Romano, Ghigo, Ezio
- Database ID:
- RPEP-00717
Evidence Hierarchy
Summarizes existing research on a topic.
What do these levels mean? →Frequently Asked Questions
Is ghrelin good or bad for you?
Both. Ghrelin's appetite stimulation and fat promotion can be harmful in obesity, but its GH release and heart protection are beneficial. Whether ghrelin is 'good' depends on the context and which effect is relevant.
Can we get only the good effects?
That's the drug development challenge. Researchers are trying to create compounds that activate ghrelin's beneficial effects (GH, cardioprotection) without the unwanted ones (excess appetite, fat gain).
Read More on RethinkPeptides
Cite This Study
https://rethinkpeptides.com/research/RPEP-00717APA
Broglio, Fabio; Arvat, Emanuela; Benso, Andrea; Papotti, Mauro; Muccioli, Giampiero; Deghenghi, Romano; Ghigo, Ezio. (2002). Ghrelin: endocrine and non-endocrine actions.. Journal of pediatric endocrinology & metabolism : JPEM, 15 Suppl 5, 1219-27.
MLA
Broglio, Fabio, et al. "Ghrelin: endocrine and non-endocrine actions.." Journal of pediatric endocrinology & metabolism : JPEM, 2002.
RethinkPeptides
RethinkPeptides Research Database. "Ghrelin: endocrine and non-endocrine actions." RPEP-00717. Retrieved from https://rethinkpeptides.com/research/broglio-2002-ghrelin-endocrine-and-nonendocrine
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkPeptides research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.