GH Secretagogues Act as Both Ghrelin Agonists and Allosteric Receptor Modulators
Different GH secretagogues (peptide and non-peptide) showed both direct ghrelin receptor agonism AND allosteric modulation (positive or negative) of ghrelin binding, revealing complex receptor pharmacology beyond simple agonism.
Quick Facts
What This Study Found
MK-677, hexarelin, and other GH secretagogues demonstrated both direct GHS-R agonism and allosteric modulation of ghrelin binding — some enhancing (positive) and others reducing (negative) ghrelin's own receptor interaction, revealing complex biased pharmacology.
Key Numbers
How They Did This
in-vitro study on ghrp, mk-677.
Why This Research Matters
Relevant for ghrp, mk-677, receptor-signaling, peptide-design.
The Bigger Picture
Advances peptide research with clinical implications.
What This Study Doesn't Tell Us
See abstract.
Questions This Raises
- ?Further research needed.
- ?Clinical translation to evaluate.
Trust & Context
- Key Stat:
- Key finding MK-677, hexarelin, and other GH secretagogues demonstrated both direct GHS-R agonism and allosteric modulation of ghrelin binding — some enhancing (po
- Evidence Grade:
- moderate evidence.
- Study Age:
- Published in 2005.
- Original Title:
- Nonpeptide and peptide growth hormone secretagogues act both as ghrelin receptor agonist and as positive or negative allosteric modulators of ghrelin signaling.
- Published In:
- Molecular endocrinology (Baltimore, Md.), 19(9), 2400-11 (2005)
- Authors:
- Holst, Birgitte(6), Brandt, Erik, Bach, Anders, Heding, Anders, Schwartz, Thue W
- Database ID:
- RPEP-01047
Evidence Hierarchy
Frequently Asked Questions
What was studied?
GH Secretagogues Act as Both Ghrelin Agonists and Allosteric Receptor Modulators
What was found?
Different GH secretagogues (peptide and non-peptide) showed both direct ghrelin receptor agonism AND allosteric modulation (positive or negative) of ghrelin binding, revealing complex receptor pharmacology beyond simple agonism.
Read More on RethinkPeptides
Cite This Study
https://rethinkpeptides.com/research/RPEP-01047APA
Holst, Birgitte; Brandt, Erik; Bach, Anders; Heding, Anders; Schwartz, Thue W. (2005). Nonpeptide and peptide growth hormone secretagogues act both as ghrelin receptor agonist and as positive or negative allosteric modulators of ghrelin signaling.. Molecular endocrinology (Baltimore, Md.), 19(9), 2400-11.
MLA
Holst, Birgitte, et al. "Nonpeptide and peptide growth hormone secretagogues act both as ghrelin receptor agonist and as positive or negative allosteric modulators of ghrelin signaling.." Molecular endocrinology (Baltimore, 2005.
RethinkPeptides
RethinkPeptides Research Database. "Nonpeptide and peptide growth hormone secretagogues act both..." RPEP-01047. Retrieved from https://rethinkpeptides.com/research/holst-2005-nonpeptide-and-peptide-growth
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.