Everything below concerns synthetic peptide. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2026-05-13. Where a claim depends on a specific study, the study is described rather than over-claimed.
AOD-9604 is a synthetic peptide that corresponds to a short section of human growth hormone. It is commonly identified as hGH fragment 176-191 because its sequence matches residues at the C-terminal end of the hormone. The molecule contains sixteen amino acids and is made by solid-phase peptide synthesis. Researchers study it for metabolic effects rather than for the growth-promoting actions associated with full human growth hormone. Its small size distinguishes it from the complete 191-amino-acid hormone.
Several names appear in scientific and commercial settings. AOD9604 and AOD-9604 are development codes used interchangeably, while hGH fragment 176-191 describes the same region. The peptide includes a disulfide bond between two cysteine residues, which helps shape its three-dimensional structure. Different suppliers may provide acetate or other salt forms, and purity can vary. These differences matter because analytical tests and biological assays can respond to the specific form being studied.
Proposed mechanism focuses on lipolysis, the breakdown of stored triglycerides into free fatty acids and glycerol. AOD-9604 is thought to act on adipose tissue without stimulating appetite or affecting blood sugar in the same way as growth hormone. Laboratory studies report increased fat oxidation in some models. The precise receptor interactions and signaling pathways remain incompletely characterized. Researchers have proposed that the peptide may influence fat mobilization through pathways distinct from the full hormone.
Research has examined whether the peptide affects fat mass independently of growth hormone's other actions. Early animal studies suggested reductions in body fat, but species differences and small sample sizes limit interpretation. Human studies have generally been short and have not consistently shown large effects. Some trials measured body composition, lipid profiles, and safety parameters, but the overall picture is one of suggestive yet inconclusive metabolic activity. Findings vary across study populations and protocols.
| Property | Value | Notes |
|---|---|---|
| Common name | AOD-9604 | Development code used in scientific literature. |
| Chemical class | Synthetic peptide | Fragment of human growth hormone. |
| Amino acid length | 16 residues | Matches hGH region 176-191. |
| Appearance | White to off-white powder | Typical lyophilized peptide solid. |
| Solubility | Soluble in water | Dissolves in aqueous media; exact behavior depends on salt form. |
Regulatory bodies have taken different approaches to AOD-9604. It is not approved as a prescription medicine by major agencies such as the U.S. Food and Drug Administration or the European Medicines Agency. In sport, the World Anti-Doping Agency prohibits peptide hormones, growth factors, and related substances, and AOD-9604 has been treated as a prohibited substance. These regulatory decisions reflect concerns about safety, efficacy, and potential misuse rather than proof of benefit.
Research on AOD-9604 also examines how the peptide is measured in biological samples. Analytical methods may include liquid chromatography coupled with mass spectrometry, immunoassays, or both. Detection can be challenging because the peptide is small and may be present at low concentrations. Published methods vary in sensitivity and specificity, so comparative interpretation requires attention to validation details. The presence of related hGH fragments can complicate identification in some matrices.
AOD-9604 has been investigated primarily as a potential treatment for obesity and related metabolic conditions. Early laboratory work examined its effects on fat cells, and later studies moved into animal models and human clinical trials. Some trials reportedly reached Phase II, but the program did not lead to an approved medicine. Published summaries often note that weight-loss results were modest or inconsistent. The full trial data are not all publicly available in detail.
Regulatory treatment of AOD-9604 has varied. In sports anti-doping, the peptide became widely discussed during a 2013 investigation into an Australian professional sports club. Authorities at the time debated whether it fell under prohibitions on growth hormone and related substances. Later clarifications and updated lists have addressed the compound in different ways. Anyone seeking current status should consult the latest applicable rules, and commercial supply for human use is not authorized in major markets.
Research interest in AOD-9604 often focuses on whether it can influence lipid metabolism without the growth-promoting or glucose-related effects of full-length hGH. This question remains unresolved, and findings depend on model, dose, and measurement method. Some reviews treat the peptide as a historical obesity candidate rather than an active therapeutic. Others cite it in discussions of peptide fragments, metabolic signaling, and performance-enhancing substances. Clear conclusions are limited by the small number of rigorous, independent human studies.
In June 2021, the US Senate approved the U.S. Innovation and Competition Act providing around 250 billion US dollars public money support to the US technological and manufacturing industry. The alleged Chinese threat in the area of technology helped secure a strong bipartisan support for the new legislation, amounting to the largest industrial policy move by the US in decades. Chinese authorities reproached to the US that the bill was “full of cold war zero-sum thinking”.
Observatories, astronomical – Andean and Mesoamerican astronomers constructed towers to observe the movements of the planets and other astronomical features and events. Although culture groups throughout the world have observed the planets and stars and recorded their movements, the stone structures of the Mesoamerican and Andean culture groups are significant because they show the emphasis these early astronomers placed on making clear and accurate observations. In the U.S., the Anasazi built structures with windows aligned for the observation of celestial events. The most notable example of Maya astronomical observatories is Caracol, in Chichén Itzá. In 1975, archaeoastronomers Anthony F. Aveni and Horst Hartung surveyed the site and suggested that ancient Maya astronomers used the structure to observe the planet Venus. The Maya, as well as other Mesoamerican culture groups, used Venus to set times for ceremonies and as a divination tool.
=== EC 2.8.4: Transferring alkylthio groups === EC 2.8.4.1: coenzyme-B sulfoethylthiotransferase EC 2.8.4.2: arsenate-mycothiol transferase EC 2.8.4.3: tRNA-2-methylthio-N6-dimethylallyladenosine synthase EC 2.8.4.4: [ribosomal protein S12] (aspartate89-C3)-methylthiotransferase EC 2.8.4.5: tRNA (N6-L-threonylcarbamoyladenosine37-C2)-methylthiotransferase
Sources: en.wikipedia.org
== Diagnosis == Initially, the diagnosis was commonly made based on suggestive symptoms and odor, the odor coming from the compound sotolon (sometimes spelled sotolone). These days, affected individuals are now often identified by characteristic elevations on plasma amino acid which do not have the characteristic odor.
== Development == The pulp has a background similar to that of dentin because both are derived from the dental papilla of the tooth germ. During odontogenesis, when the dentin forms around the dental papilla, the innermost tissue is considered pulp.
=== July === 2 July – Georgie David, the Reform UK candidate for West Ham and Beckton becomes the party's second candidate to suspend their campaign and defect to the Conservatives, and says the "vast majority" of her fellow Reform candidates are "racist, misogynistic and bigoted". The Welsh Government says it plans to bring in a ban on Welsh politicians telling lies before the 2026 Senedd election. 3 July – The Sun endorses the Labour Party ahead of the general election. Essex Police announce that no offences were committed by the Reform UK campaigners recorded making racist comments by Channel 4 News. An investigation concludes that former Conservative government minister Owen Paterson acted as a lobbyist for a healthcare company without being registered to do so. Mick Antoniw, the Counsel General for Wales, apologises after being formally reprimanded by the Senedd for tweeting "Tories so happy to see people and particularly children killed and injured on our roads". A hearing at Newry Magistrates Court rules there is sufficient evidence for former DUP leader Sir Jeffrey Donaldson to stand trial on charges of historical sexual abuse. 4 July – The 2024 United Kingdom general election takes place.
== Production == Brilliant blue FCF is a synthetic dye produced by the condensation of 2-formylbenzenesulfonic acid and the appropriate aniline followed by oxidation. It can be combined with tartrazine (E102) to produce various shades of green. It is usually a disodium salt. The diammonium salt has CAS number 2650-18-2. Calcium and potassium salts are also permitted. It can also appear as an aluminium lake. The chemical formula is C37H34N2Na2O9S3. Related dyes are C.I. acid green 3 (CAS#4680-78-8) and acid green 9 (CAS#4857-81-2). In these dyes, the 2-sulfonic acid group is replaced by H and Cl, respectively. Many attempts have been made to find similarly colored natural dyes that are as stable as brilliant blue FCF. Blue pigments must possess many chemical traits, including pi-bond conjugation, aromatic rings, heteroatoms and heteroatom groups, and ionic charges in order to absorb low energy red light. Most natural blue dyes are either unstable, blue only in alkaline conditions, or toxic; good candidates for further research into use as natural dyes include anthocyanin, trichotomine, and phycocyanin derivatives.
Sources: en.wikipedia.org
Chromatin remodelers in the INO80 subfamily are made of multiple subunit complexes with split ATPase domains. The INO80 subfamily's protein domains are an N-terminus, two RuvB-like proteins (Rvb1 and Rvb2), and a C-terminus. The ATPase domain of the N-terminus functions in the identification of DNA damage and aids in the stability of telomeres. A long insertion in the ATPase domain is what recruits the Rvb1 and Rvb2 helicases. These helicases contribute to genome maintenance and are unique to the INO80 subfamily of chromatin remodeling complexes. This subfamily also contains an Arp4-actin complex that aids in stability of genes. The Arp5 subunit is required for ATPase function, binding to the DNA, and relocation of nucleosomes.
It has been shown that endoglin expression and TGF-beta secretion are attenuated in bone marrow stromal cells when they are cocultured with prostate cancer cells. Also, the downstream TGF-beta/bone morphogenic protein (BMP) signaling pathway, which includes Smad1 and Smad2/3, were attenuated along with Smad-dependent gene transcription. Another result in this study was that both Smad1/5/8-dependent inhibitor of DNA binding 1 expression and Smad2/3-dependent plasminogen activator inhibitor I had a reduction in expression and cell proliferation. Ultimately, the cocultured prostate cancer cells altered the TGF-beta signaling in the bone stromal cells, which suggests this modulation is a mechanism of prostate cancer metastases facilitating their growth and survival in the reactive bone stroma. This study emphasizes the importance of endoglin in TGF-beta signaling pathways in other cell types other than endothelial cells. TRC105 is an experimental antibody targeted at endoglin as an anti-angiogenesis treatment for soft-tissue sarcoma. Cluster of differentiation
== Distribution == The labeled [18F]FDG compound has a relatively short shelf life which is determined largely by the physical decay of fluorine-18 with a half-life of 109.8 minutes, or slightly less than two hours. Still, this half-life is sufficiently long to allow shipping the compound to remote PET scanning facilities, in contrast to other medical radioisotopes like carbon-11 with a half-life of ~20 minutes. Due to transport regulations for radioactive compounds, delivery is normally done by specially licensed road transport, but means of transport may also include dedicated small commercial jet services. Transport by air allows expanding the distribution area around a [18F]FDG production site to deliver the compound to PET scanning centres within a 1–3-hour flight time. Recently, on-site cyclotrons with integral shielding and portable chemistry stations for making [18F]FDG have accompanied PET scanners to remote hospitals. This technology holds some promise in the future, for replacing some of the scramble to transport [18F]FDG from site of manufacture to site of use.
Sources: en.wikipedia.org
AOD-9604 is a synthetic peptide fragment of human growth hormone. It corresponds to the C-terminal region known as hGH 176-191 and is studied for metabolic effects. It is not an approved therapeutic drug.
No. It contains only a small portion of the human growth hormone sequence. The full hormone has 191 amino acids and many additional actions that the fragment does not share.
The name refers to the amino acid positions in the human growth hormone chain. The fragment spans residues 176 through 191 at the C-terminal end. This naming convention helps distinguish it from full-length hGH.
It is proposed to promote lipolysis in fat tissue, the breakdown of stored fat into fatty acids and glycerol. The detailed receptor and signaling mechanisms are not fully established.