Everything below concerns Tesamorelin. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2026-01-23. Numbers and descriptions here follow the published literature rather than marketing material.
Tesamorelin occupies a narrow position among agents that act on the growth hormone axis. Unlike growth hormone itself, which is given as replacement, it stimulates the pituitary to release the hormone in pulses, so the downstream increase in insulin-like growth factor 1 depends on intact somatotroph function. Other peptides in the same family include shorter GHRH fragments and synthetic secretagogues with different stability profiles. Several points remain unresolved, including whether the reduction in visceral fat translates into fewer cardiovascular events, what happens to metabolic markers after long-term use, and how the drug compares with lifestyle or surgical approaches.
Tesamorelin is a synthetic peptide that belongs to the growth hormone-releasing hormone family and contains the same forty-four amino acid sequence as endogenous GHRH, extended at the amino terminus by a trans-3-hexenoyl group. That small fatty acid modification protects the peptide from rapid cleavage by dipeptidyl peptidase-4, the enzyme that shortens the half-life of native GHRH to only a few minutes. Chemically the compound is produced by solid-phase peptide synthesis, purified by chromatography, and supplied as a sterile lyophilized powder for reconstitution.
Regulatory approval in the United States came in 2010, when the Food and Drug Administration cleared the peptide for the reduction of excess abdominal fat in adults with HIV infection and associated lipodystrophy. The decision rested mainly on two randomized phase 3 trials that enrolled roughly eight hundred patients and ran for twenty-six weeks. Participants receiving active drug showed substantially greater declines in visceral adipose tissue than those receiving placebo, while total body weight changed comparatively little. A reformulated presentation was later approved, and the product has remained a niche therapy rather than a general weight-loss agent.
Stability testing examines how the molecule changes under controlled stress. Thermal stress, light exposure, and extremes of pH are applied separately so that each degradation route can be attributed to a specific cause. The main observed changes are oxidation, deamidation, and aggregation into dimers or higher-order species. Accelerated studies at elevated temperature are used to estimate behavior over longer periods, though such extrapolation carries uncertainty. For a lyophilized powder, residual moisture and the choice of bulking agent strongly influence how quickly these changes appear.
Practical handling centers on limiting moisture, oxygen, and temperature excursions. Lyophilized material is generally held at or below minus twenty degrees Celsius, protected from light and kept sealed until use. Once reconstituted, solutions are typically kept cold and used within a short window because hydrolysis and microbial growth both accelerate in liquid form. Repeated freeze-thaw cycles are avoided, since they promote aggregation. Vial contents should be inspected for particulates and clarity before analysis, and working aliquots are prepared to reduce the number of times the stock is opened.
| Property | Value | Notes |
|---|---|---|
| Peptide class | Synthetic GHRH analogue | 44 residues; N-terminal trans-3-hexenoyl group |
| First approval year | 2010 | United States; HIV-associated abdominal fat accumulation |
| Administration route | Subcutaneous injection | Abdominal site; clinician-administered or self-injected |
| Common synonyms | TH9507; tesamorelin acetate | Development code and acetate salt form |
| Originator | Canadian biotechnology firm | Original developer and regulatory sponsor |
A documented effect of tesamorelin is a reduction in visceral adipose tissue in some study populations. Researchers have reported decreases in trunk fat measured by computed tomography alongside changes in lipid markers. The mechanism is thought to involve growth hormone-mediated lipolysis, though the precise contribution of direct versus indirect pathways is not fully resolved. Studies have generally examined defined groups over finite periods, so long-term outcomes are less well characterized. Findings have not been uniform across all trials.
Tesamorelin is a synthetic peptide analog of growth hormone-releasing hormone (GHRH). Its sequence corresponds to the 44-amino-acid form of human GHRH with a trans-3-hexenoyl group attached to the N-terminal tyrosine. This modification slows enzymatic cleavage and extends the peptide's activity relative to the native hormone. The compound is produced by solid-phase peptide synthesis and supplied as a lyophilized powder. Researchers classify it as a GHRH receptor agonist. Its structure places it in the same family as other growth hormone secretagogues that act on the pituitary.
Once reconstituted, the peptide is handled as a solution and is less stable than the lyophilized powder. Aqueous solutions are commonly kept cold and used within a defined period. Buffer composition and pH influence degradation rates, with extremes of acidity or alkalinity accelerating hydrolysis. Preservatives may be added in multi-dose formats to limit microbial growth. Freezing and thawing of solutions is generally avoided because it can cause precipitation or loss of activity.
Identity and purity are assessed by reversed-phase high-performance liquid chromatography, which separates the peptide from related impurities. Mass spectrometry, often coupled to liquid chromatography, confirms molecular mass and detects chemical modifications. Peptide mapping and amino acid analysis can verify sequence integrity. Water content is measured by Karl Fischer titration, and residual solvents may be checked by gas chromatography. These methods together support batch-to-batch consistency and routine quality control.
A total of 100 cities across six continents were part of the 100 Resilient Cities program funded by the Rockefeller Foundation. In January 2016, the United States Department of Housing and Urban Development announced winners of its National Disaster Resilience Competition (NDRC), awarding three 100RC member cities – New York City; Norfolk, VA; and New Orleans, LA – with more than $437 million in disaster resilience funding. The grant was the largest ever received by the city of Norfolk. In April 2019, it was announced that the foundation would no longer be funding the 100 Resilient Cities program as a whole. Some elements of the initiative's work, most prominently the funding of several cities' Chief Resilience Officer roles, continues to be managed and funded by the Rockefeller Foundation, while other aspects of the program continue in the form of two independent organizations, Resilient Cities Catalyst (RCC) and the Global Resilient Cities Network (GRCN), founded by former 100RC leadership and staff.
medical genetics The branch of medicine and medical science that involves the study, diagnosis, and management of hereditary disorders, and more broadly the application of knowledge about human genetics to medical care.
=== Fluorochemical manufacturing workers === People who work at fluorochemical production plants and in manufacturing industries that use PFAS in the industrial process can be exposed to PFAS in the workplace. Much of what we know about PFAS exposure and health effects began with medical surveillance studies of workers exposed to PFAS at fluorochemical production facilities. These studies began in the 1940s and were conducted primarily at U.S. and European manufacturing sites. Between the 1940s and 2000s, thousands of workers exposed to PFAS participated in research studies that advanced scientific understanding of exposure pathways, toxicokinetic properties, and adverse health effects associated with exposure. The first research study to report elevated organic fluorine levels in the blood of fluorochemical workers was published in 1980. It established inhalation as a potential route of occupational PFAS exposure by reporting measurable levels of organic fluorine in air samples at the facility. Workers at fluorochemical production facilities have higher levels of PFOA and PFOS in their blood than the general population. Serum PFOA levels in fluorochemical workers are generally below 20,000 ng/mL but have been reported as high as 100,000 ng/mL, whereas the mean PFOA concentration among non-occupationally exposed cohorts in the same time frame was 4.9 ng/mL. Among fluorochemical workers, those with direct contact with PFAS have higher PFAS concentrations in their blood than those with intermittent contact or no direct PFAS contact.
== R == random primed synthesis - reading frame - recessive - recognition sequence - recombinant DNA - recombination - recombination-repair - relaxed DNA - repetitive DNA - replica plating - reporter gene - repression - repressor - residue - response element - restriction - restriction endonuclease - restriction enzyme - restriction fragment - restriction fragment length polymorphism (RFLP) - restriction fragments - restriction map - restriction site - reticulocyte lysate - retrovirus - reverse transcriptase - reverse transcription - revertant - ribonuclease - ribonuclease - ribonucleic acid - riboprobe - ribose-seq - ribosomal-protein-alanine N-acetyltransferase - ribosomal binding sequence - ribosome - ribosyldihydronicotinamide dehydrogenase (quinone) - ribozyme - risk communication - RNA polymerase - RNA splicing - RNAi - RNase - RNase protection assay - rRNA - rRNA (guanine-N2-)-methyltransferase - RT-PCR - Run-on - runoff transcript
Sources: en.wikipedia.org
Oral treatment: (brand names Daktarin in UK, Fungimin Oral Gel in Bangladesh): In 2010, the US Food and Drug Administration approved Oravig (miconazole) buccal tablets for the local treatment of oropharyngeal candidiasis, more commonly known as thrush, in adults and children age 16 and older. External skin treatment (brand names Desenex and Zeasorb in US and Canada; Micatin, Monistat-Derm, Daktarin in India, UK, Australia, Belgium and the Philippines; Kalpanax in Indonesia; Daktar in Norway; Fungidal in Bangladesh; Decocort in Malaysia) (Note that Desenex originally contained not miconazole, but rather the fungistatic agents, undecylenic acid and zinc undecylenate, which were in the foot powder developed by the US government for troops during WWII.) Vaginal treatment (brand names Miconazex, Monistat, Femizol or Gyno-Daktarin in UK):
While ethical approaches to the excavation and analysis of physical human remains have received considerable attention, professional and academic dialogue regarding how to appropriately record, share, and display human remains in the digital realm is less developed. While digital technologies for recording and analysing human remains are increasingly accessible, justification for such recording and analysis is essential e.g. 3D scanning performed simply because it is possible is inappropriate and disrespectful to the deceased.
Late-20th-century DNA sequencing changed lichen systematics, as it did the rest of biology. By the 1990s gene-specific sequencing (e.g., nuclear ribosomal DNA) was accessible, and lichenologists used it to probe deep relationships and test classical schemes. Initial studies centred on nuclear small-subunit rDNA (nuSSU), a slowly evolving gene found in all fungi. Andrea Gargas and co-workers (1995) compared nuSSU sequences from many fungi, including several lichens. Their data supplied the first clear evidence that lichenization arose independently multiple times. Lichen-forming fungi in the sample occupied at least five separate branches of the fungal tree. Three origins lay in the Basidiomycota—for example Omphalina and Multiclavula (mushroom-forming, algal partners) and Dictyonema (cyanobacterial partner). Two further origins occurred in the Ascomycota: one in the large ascolichen clade now placed in Lecanoromycetes, the other in Arthoniomycetes (e.g., some crustose Arthonia species). The pattern contradicted the view that lichens form a single natural group. Instead, 'lichen' is best seen as a functional category—an ecological strategy adopted by disparate fungal lineages. The study suggested that lichen-forming fungi evolved from saprotrophic or parasitic ancestors, not from a single ancestral lichen; some lineages later lost the symbiosis. In other words, the ability to form a lichen could evolve from a non-lichen state multiple times, and perhaps even be lost (as some primarily lichen-forming groups also include non-lichenized fungi).
Argon is used in the poultry industry to asphyxiate birds, either for mass culling following disease outbreaks, or as a means of slaughter more humane than electric stunning. Argon is denser than air and displaces oxygen close to the ground during inert gas asphyxiation. Its non-reactive nature makes it suitable in a food product, and since it replaces oxygen within the dead bird, argon also enhances shelf life. Argon is sometimes used for extinguishing fires where valuable equipment may be damaged by water or foam.
== External links == HFE+protein,+human at the U.S. National Library of Medicine Medical Subject Headings (MeSH) Overview of all the structural information available in the PDB for UniProt: Q30201 (Hereditary hemochromatosis protein) at the PDBe-KB.
Sources: en.wikipedia.org
It is a laboratory-made peptide of forty-four amino acids whose sequence matches human growth hormone-releasing hormone, with a modified amino terminus. The modification is a short unsaturated fatty acid chain attached to the first residue. This change slows enzymatic breakdown and lengthens the time the peptide stays active in circulation.
The clinical program was designed around HIV-associated lipodystrophy, a condition in which fat accumulates abnormally around the internal organs. Trials enrolled that specific population, so the evidence base covers it rather than the general population. Regulators approved the drug for the studied indication only, and promotion outside it is not permitted.
Growth hormone therapy supplies the finished hormone directly, while this peptide acts upstream and asks the pituitary to secrete its own. That difference means the response depends on a functioning pituitary and on the body's normal feedback loops. It also means the circulating hormone profile is pulsatile rather than a flat, injected level.
Reversed-phase high-performance liquid chromatography with ultraviolet detection is the standard technique for purity and content. Mass spectrometry provides orthogonal confirmation of identity. The two are normally used together rather than in isolation.