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The peptide literature, summarized and graded.

Every paper distilled to a plain-language summary with an honest evidence grade — from strong human trials to animal-only signals. 2 papers indexed and counting.

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Filtered by #AOD-9604 · clear

Animal only

Effect of Intra-articular Injection of AOD9604 with or without Hyaluronic Acid in Rabbit Osteoarthritis Model.

This study investigated the effects of intra-articular injections of AOD9604 (a synthetic peptide fragment of human growth hormone) alone and in combination with hyaluronic acid (HA) in a collagenase-induced knee osteoarthritis (OA) rabbit model. Thirty-two mature New Zealand white rabbits had OA induced in both knees via collagenase injection, then were divided into four groups receiving weekly intra-articular injections of saline, HA alone, AOD9604 alone, or AOD9604 combined with HA. At eight weeks, outcomes were assessed via gross morphology, histopathology of cartilage, and lameness scoring. The study found that all treatment groups showed significantly less cartilage degeneration than the saline control group. The combination of AOD9604 and HA produced significantly lower cartilage damage scores and shorter lameness periods compared to either treatment alone. While these findings suggest a potential chondroprotective and synergistic effect, the study is limited by its animal-only design, relatively small group sizes, and the use of a chemically induced OA model that may not fully replicate human OA pathology. No human data were collected, so translation of findings to clinical practice remains uncertain.

#AOD-9604

Annals of clinical and laboratory science · Jan 2015Source ↗

Animal only

The effects of human GH and its lipolytic fragment (AOD9604) on lipid metabolism following chronic treatment in obese mice and beta(3)-AR knock-out mice.

This animal study investigated how human growth hormone (hGH) and a synthetic lipolytic fragment derived from its C-terminus, AOD9604, affect fat metabolism and body weight in obese and genetically modified mice. Obese mice received 14 days of chronic intraperitoneal administration of either compound. Both hGH and AOD9604 reduced body weight and body fat in obese mice, and these effects were associated with increased expression of beta-3 adrenergic receptor (β3-AR) RNA — a key receptor involved in fat breakdown — bringing levels in obese mice closer to those seen in lean mice. To test whether β3-AR was essential to these effects, the researchers used β3-AR knock-out mice; in these animals, chronic treatment with either compound failed to produce the body weight reduction or increased lipolysis seen in normal mice. However, in an acute experiment, AOD9604 still increased energy expenditure and fat oxidation in knock-out mice, suggesting additional mechanisms exist. The authors concluded that while neither compound acts directly through β3-AR, both upregulate its expression, which may amplify lipolytic sensitivity over time. Key limitations include the exclusively animal-based design and the use of intraperitoneal administration, limiting direct translation to humans.

#AOD-9604

Endocrinology · Dec 2001DOI ↗