Peptable

Comparison

AOD-9604 vs Hexarelin

Function

While AOD-9604 is studied as an anti-obesity peptide that can reduce weight gain and increase fat oxidation in obese animal models with generally neutral effects on IGF-1 and glucose metabolism in early human trials71111115, Hexarelin is investigated for effects on GH secretion, cardiac protection, and muscle metabolism, with higher GH secretory potency than earlier GHRPs1929.

Mechanism

While AOD-9604 works as a synthetic fragment of human growth hormone corresponding to residues 176–191 with an added N-terminal tyrosine, retaining lipolytic but not growth-promoting actions; proposed to stimulate lipolysis and inhibit lipogenesis in adipose tissue, partly via β3-adrenergic pathways without significantly activating the full GH receptor–IGF-1 axis6171111, Hexarelin is a potent synthetic hexapeptide (examorelin) that agonizes GHSR-1a to stimulate GH release and also binds CD36, influencing cardiovascular and metabolic pathways19212996.

Receptor

AOD-9604

Acts indirectly on adipocytes, with mechanistic work implicating β3-adrenergic receptor–linked signaling in fat metabolism rather than direct GH receptor activation71111

Hexarelin

Primary: GHSR-1a (ghrelin receptor); also binds the scavenger receptor CD36 in vascular and macrophage tissues192129

Organism or Origin

AOD-9604

Synthetic peptide fragment derived from human pituitary growth hormone (GH1 protein) 111107114

Hexarelin

Fully synthetic growth hormone secretagogue29

Gene

AOD-9604

GH1

Hexarelin

GHSR

Summary

Both peptides fall into a similar broad context as Hormone peptides, although the details of how they are used and discussed still diverge. Both are often discussed in Metabolic and endocrine contexts, while AOD-9604 is more of a metabolic peptide and Hexarelin is better described as a hormone peptide. Their biological logic is quite different: AOD-9604 is a hormone analog, whereas Hexarelin is a receptor agonist. AOD-9604 has a more synthetic analog origin, while Hexarelin is closer to synthetic design background and both are still best understood as being in Preclinical development. Hexarelin incorporates d-amino acid substitution and amidation features that are not part of AOD-9604, while their sequence patterns also diverge, with AOD-9604 showing hydrophobic domain features and Hexarelin showing protein-mimetic sequence features.

Related articles

No related articles are linked to these peptides yet.

Sources

61AOD-9604 – hGH 176–191 Analog Research Peptide ..., https://www.polybiotech.co/products/aod-9604-5mg
71Body-Fat Metabolism: AOD-9604 & GH Fragment 176–191 - Tide Labs, https://tidelabs.co.uk/blogs/articles/aod-9604-gh-frag-176-191-research-on-body-fat-metabolism
107Growth hormone 1 - Wikipedia, https://en.wikipedia.org/wiki/Growth_hormone_1
111Effects of Human GH and Its Lipolytic Fragment (AOD9604) on Lipid ..., https://academic.oup.com/endo/article/142/12/5182/2988749
114GH1 growth hormone 1 GH GH-N GHN IGHD1B hGH-N, https://www.sigmaaldrich.com/US/en/genes/gh1
115Peptide Spotlight: AOD 9604 - The Wellness Lounge, https://www.akwellnesslounge.com/blog/peptide-spotlight-aod-9604
19Identification of the growth hormone-releasing peptide binding site ..., https://pmc.ncbi.nlm.nih.gov/articles/PMC1133797/
21Hexarelin Peptide | Strength & Recovery - Paragon Sports Medicine, https://www.paragonsportsmedicine.com/peptides/hexarelin
29Examorelin - Wikipedia, https://en.wikipedia.org/wiki/Examorelin
96Growth Hormone Secretagogue Receptor - ScienceDirect.com, https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/growth-hormone-secretagogue-receptor