Educational, research-use-only content. This article summarizes published scientific literature for informational purposes only and is not medical advice. The compounds discussed are supplied strictly for in-vitro laboratory research and are not approved for human or veterinary use.
What is AOD-9604?
AOD-9604 is a synthetic peptide based on the C-terminal “lipolytic domain” of human growth hormone — the small region thought to be responsible for growth hormone’s fat-related effects, without the full hormone’s actions on growth and blood sugar (Ng et al., 2000).
What the preclinical research examined
In obese Zucker rats, daily oral AOD-9604 over 19 days reduced body-weight gain by more than 50% versus controls and increased lipolytic activity in adipose tissue — and, unlike intact growth hormone, did not impair insulin sensitivity in glucose-clamp testing (Ng et al., 2000). In obese mice, AOD-9604 reduced body weight and fat and raised expression of the β3-adrenergic receptor, a key lipolytic receptor in fat cells; a knockout study indicated its fat-burning actions are not mediated directly through that receptor (Heffernan et al., 2001).
How it is thought to work
The research framing is that AOD-9604 may stimulate fat breakdown (lipolysis) and fat oxidation while sparing the glucose-related effects of full growth hormone — a profile of interest in metabolic research (Ng et al., 2000; Heffernan et al., 2001).
The limits of the current evidence
- The supportive efficacy data are overwhelmingly from rodent models; robust human evidence of weight-loss benefit has not been established, and AOD-9604 is not an approved drug in the United States.
- Promising animal results frequently do not translate to humans; this material is supplied for laboratory research use only.
References
According to PubMed:
- Ng FM, et al. Metabolic studies of a synthetic lipolytic domain (AOD9604) of human growth hormone. Horm Res. 2000. doi:10.1159/000053183
- Heffernan M, et al. The effects of human GH and its lipolytic fragment (AOD9604) on lipid metabolism in obese and beta3-AR knock-out mice. Endocrinology. 2001. doi:10.1210/endo.142.12.8522
