The short version of GHRH analog fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2026-05-06 and is reviewed periodically as new material appears.
Development work on the compound, originally designated TH9507, focused on conditions in which reduced growth hormone signaling is thought to contribute to altered body composition. The United States Food and Drug Administration approved it in 2010 for the treatment of excess visceral abdominal fat in adults with human immunodeficiency virus infection and lipodystrophy. Later research examined other populations, including adults with mild cognitive impairment, where a large trial did not meet its primary endpoints. This mixed record illustrates how a single mechanism can produce clear effects in one setting and inconclusive results in another.
Several related peptides act on the same receptor, including sermorelin, a shorter GHRH fragment, and modified analogs such as CJC-1295 and modified GRF(1-29) that are common in research settings rather than approved products. Tesamorelin differs from growth hormone itself in that it acts upstream, prompting the pituitary to release the hormone through physiological signaling rather than supplying it directly. Terminology in the literature distinguishes GHRH analogs, growth hormone secretagogues, and recombinant growth hormone, although popular discussion often blurs these categories together. Precise naming matters when comparing study results.
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.
Lyophilized tesamorelin is generally stored refrigerated at temperatures between 2 and 8 degrees Celsius. The solid form is comparatively stable when kept dry and protected from light. Moisture uptake can promote aggregation and degradation, so sealed containers with desiccant are common. Researchers typically avoid repeated temperature cycling, which may stress the peptide. Documentation accompanying reference materials usually specifies a shelf life under these conditions.
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.
| Property | Value | Notes |
|---|---|---|
| Molecular class | Synthetic 44-residue GHRH analog | Sequence matches human GHRH(1-44); differs only at the N-terminus |
| Nominal molecular mass | Approximately 5,136 Da (free base) | Small variation arises from counterion and salt form |
| Appearance | White to off-white lyophilized powder | Supplied in single-use vials intended for reconstitution |
| Solubility class | Freely soluble in water | Practically insoluble in nonpolar organic solvents |
| Typical storage | 2 to 8 degrees Celsius, protected from light | Reconstituted material is handled according to label instructions |
Tesamorelin binds to growth hormone-releasing hormone receptors on the surface of pituitary somatotroph cells. This binding activates adenylate cyclase, raising intracellular cyclic AMP levels and triggering the release of growth hormone into circulation. The elevated growth hormone then stimulates hepatic production of insulin-like growth factor 1. Because the effect is mediated through the endogenous axis, secretion remains subject to feedback regulation. This distinguishes it from direct growth hormone administration, which bypasses pituitary control entirely.
Clinical investigation has focused on HIV-associated lipodystrophy, a condition in which antiretroviral therapy contributes to abnormal fat distribution. Excess visceral adipose tissue accumulates in the abdomen while peripheral fat may be lost. Tesamorelin was evaluated for reducing this visceral fat depot, with trials measuring changes in abdominal fat by imaging rather than by body weight alone. The rationale rests on the known lipolytic effects of growth hormone. Effects on visceral fat are documented, while long-term outcomes regarding cardiovascular risk remain less clearly established.
The peptide is supplied as a lyophilized powder in single-use vials and is normally kept refrigerated between two and eight degrees Celsius, protected from light. Once dissolved, the solution is handled carefully because peptide bonds and the acyl modification can degrade under warm or alkaline conditions. Vials are inspected for cracks, and the powder is checked for color and uniformity before handling. Temperature excursions during shipping are a frequent reason for quality questions.
Identity and purity are assessed with reversed-phase high-performance liquid chromatography, which separates the peptide from truncated or oxidized forms. Mass spectrometry confirms the expected molecular weight, and peptide mapping after enzymatic digestion verifies the amino acid sequence. Water content is measured because residual moisture affects stability, and tests for aggregates or particulates are standard for injectable peptides. Circular dichroism can indicate whether the molecule has adopted an unexpected secondary structure in solution.
frameshift mutation A type of mutation in a nucleic acid sequence caused by the insertion or deletion of a number of nucleotides that is not divisible by three. Because of the triplet nature by which nucleotides code for amino acids, a mutation of this sort causes a shift in the reading frame of the nucleotide sequence, resulting in the sequence of codons downstream of the mutation site being completely different from the original.
Normally, cytokine production in and around the wounded area increases to fight infection and control healing (and, possibly, to control pain), but pre-incisional morphine administration (0.1 mg/kg to 10.0 mg/kg) reduced the number of cytokines found around the wound in a dose-dependent manner. The authors suggest that morphine administration in the acute post-injury period may reduce resistance to infection and may impair the healing of the wound.
In China, archaeological evidence of medicine in Chinese dates back to the Bronze Age Shang dynasty, based on seeds for herbalism and tools presumed to have been used for surgery. The Huangdi Neijing, the progenitor of Chinese medicine, is a medical text written beginning in the 2nd century BCE and compiled in the 3rd century. In India, the oldest known surgical text, the Sushruta Samhita written by the surgeon Sushruta, described numerous surgical operations, including the earliest forms of plastic surgery as well as methods of sterilization for surgical instruments. The earliest records of dedicated hospitals come from Mihintale in Sri Lanka where evidence of dedicated medicinal treatment facilities for patients are found.
== Clinical applications == In 2013, Aileron Therapeutics, which was co-founded by Verdine, Walensky and Taylor, completed the first stapled peptide clinical trial with their growth-hormone-releasing hormone agonist ALRN-5281. As of 2019, Aileron Therapeutics is developing another candidate, sulanemadlin (ALRN-6924), in a Phase 2a trial that assesses the combination of sulanemadlin and Pfizer's palbociclib for the treatment of patients with MDM2-amplified cancers, and a Phase 1b/2 clinical trial to evaluate sulanemadlin as a myelopreservative agent to protect against chemotherapy-induced toxicities.
While psychiatrists continue to prescribe diazepam for the short-term relief of anxiety, neurology has taken the lead in prescribing diazepam for the palliative treatment of certain types of epilepsy and spastic activity, for example, forms of paresis. It is also the first line of defense for a rare disorder called stiff-person syndrome.
Sources: en.wikipedia.org
In a simultaneous publication, The New York Times and the Washington Post broke the story by Post reporter Alma Guillermoprieto and Times reporter Raymond Bonner about the El Mozote massacre where the army of El Salvador had carried out the mass execution of at least 811 civilians. Dr. Roberto Suazo Cordova was installed as President of Honduras, becoming the first civilian president of the Central American nation since the 1979 military coup that had brought down the previous civilian government. Died: Tran Van Huong, 79, the last President of South Vietnam for seven days (April 21–28, 1975) before the fall of Saigon, and Prime Minister 1964-1965 and 1968–1969, died at his home in Ho Chi Minh City
=== Other nonspecific signs === Some signs that may be present include changes in the nails (such as Muehrcke's lines, Terry's nails, and nail clubbing). Additional changes may be seen in the hands (Dupuytren's contracture) as well as the skin/bones (hypertrophic osteoarthropathy).
== Characteristics == As a food ingredient, thaumatin is considered to be safe for consumption. In a chewing gum production plant, thaumatin has been identified as an allergen. Switching from using powdered thaumatin to liquid thaumatin reduced symptoms among affected workers. Additionally, eliminating contact with powdered gum arabic (a known allergen) resulted in the disappearance of symptoms in all affected workers. Thaumatin interacts with human TAS1R3 receptor to produce a sweet taste. The interacting residues are specific to old world monkeys and apes (including humans); only these animals can perceive it as sweet.
When bacterial cells run out of nutrients, they enter stationary phase and downregulate protein synthesis. Several processes mediate this transition. For instance, in E. coli, 70S ribosomes form 90S dimers upon binding with a small 6.5 kDa protein, ribosome modulation factor RMF. These intermediate ribosome dimers can subsequently bind a hibernation promotion factor (the 10.8 kDa protein, HPF) molecule to form a mature 100S ribosomal particle, in which the dimerization interface is made by the two 30S subunits of the two participating ribosomes. The ribosome dimers represent a hibernation state and are translationally inactive. A third protein that can bind to ribosomes when E. coli cells enter the stationary phase is YfiA (previously known as RaiA). HPF and YfiA are structurally similar, and both proteins can bind to the catalytic A- and P-sites of the ribosome. RMF blocks ribosome binding to mRNA by preventing interaction of the messenger with 16S rRNA. When bound to the ribosomes the C-terminal tail of E. coli YfiA interferes with the binding of RMF, thus preventing dimerization and resulting in the formation of translationally inactive monomeric 70S ribosomes.
Sources: en.wikipedia.org
Under Lenin, the state made explicit commitments to promote the equality of men and women. Many early Russian feminists and ordinary Russian working women actively participated in the Revolution, and many more were affected by the events of that period and the new policies. Beginning in October 1918, Lenin's government liberalized divorce and abortion laws, decriminalized homosexuality (re-criminalized in 1932), permitted cohabitation, and ushered in a host of reforms. However, without birth control, the new system produced many broken marriages, as well as countless out-of-wedlock children. The epidemic of divorces and extramarital affairs created social hardships when Soviet leaders wanted people to concentrate their efforts on growing the economy. Giving women control over their fertility also led to a precipitous decline in the birth rate, perceived as a threat to their country's military power. By 1936, Stalin reversed most of the liberal laws, ushering in a pronatalist era that lasted for decades. By 1917, Russia became the first great power to grant women the right to vote. After heavy casualties in World Wars I and II, women outnumbered men in Russia by a 4:3 ratio; this contributed to the larger role women played in Russian society compared to other great powers at the time.
== Treatment == Although research is ongoing, currently there is no genetic-level cure for the myriad of mutations that cause the various presentations of hereditary spherocytosis. Common current management focuses on interventions prevent the body from inappropriately destroying the functional spherocytes produced by erythrocyte progenitor cells within the bone marrow. Typical treatment options include:
=== Protein cages === The term protein cage delineates a diverse range of protein structures that are formed by the self-assembly of protein subunits into hollow macromolecular nanoparticles. These protein cages are nanoparticles that have one or more cavities present in their structure. The size of the cavity contributes to the size of the particle that the cavity can enclose, for example inorganic nanoparticles, nucleic acids, and even other proteins. The interior or chamber portion of the protein cage is usually accessible through a pore which is located in between protein subunits. The RNA exosome has nuclease active sites that are present in a cavity where 3' RNA degradation takes place; access to this cavity is controlled by a pore and this serves to prevent uncontrollable RNA decay. Some protein cages are dynamic structures that assemble and disassemble in response to external stimuli. Other examples of protein cages are clathrin cages, viral envelopes, chaperonins, and the iron storage protein ferritin.
Sources: en.wikipedia.org
It is a synthetic peptide built from 44 amino acids arranged in the same order as human growth hormone-releasing hormone. A short fatty-acid chain, described as a trans-3-hexenoyl group, is attached to the first amino acid. The finished molecule is formulated as a sterile powder that is dissolved before use.
No. It is a releasing-factor analog that signals the pituitary gland to secrete growth hormone, whereas recombinant growth hormone is the hormone itself administered directly. The two are chemically distinct and act at different points in the same endocrine pathway. This distinction is often lost in informal discussion.
Native growth hormone-releasing hormone is broken down within minutes by dipeptidyl peptidase-4 in the bloodstream. Adding the hexenoyl group at the N-terminus shields the peptide from that enzyme. The modification does not change the receptor it targets, only how long the peptide survives in circulation.
Refrigeration between 2 and 8 degrees Celsius is typical, with protection from moisture and light. Dry, sealed containers help maintain stability over the labeled shelf life. Temperature cycling is usually minimized.