The short version of GHRH analog fits in a sentence. The long version — which is the one that helps — is below.
Reviewed 2025-08-30. Anything still debated is marked as such rather than presented as settled.
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.
Metabolic interest in this compound centers on fat distribution rather than on hormone levels alone. Imaging trials in adults with excess abdominal fat report reductions in visceral adipose tissue, while subcutaneous depots change comparatively little. Growth hormone and IGF-1 are presumed to carry the effect, but the separate contribution of each is not firmly established. Whether these changes persist after treatment stops, and whether they alter longer-term health outcomes, remain open questions that published work does not answer consistently.
Tesamorelin is a synthetic peptide of forty-four amino acids whose sequence reproduces human growth hormone-releasing hormone. Its distinguishing feature sits at the amino terminus, where a trans-3-hexenoyl group replaces the free amine. That acylation slows cleavage by dipeptidyl peptidase IV, an enzyme that otherwise removes the first two residues and inactivates the natural hormone quickly. The modified peptide therefore persists longer in circulation while keeping the same receptor target. It is handled as a lyophilized solid and dissolved shortly before use.
| 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 |
作用位置在垂体前叶。tesamorelin 与 GHRH 受体结合后激活腺苷酸环化酶，升高细胞内 cAMP，再经蛋白激酶 A 通路促进生长激素的合成与释放。由于它作用于内源调控节点，生长激素仍以脉冲方式分泌，而不是被持续抬升到固定水平。生长激素随后在肝脏等组织诱导胰岛素样生长因子 1 产生，构成完整的生长激素轴响应。
研究背景集中在特定人群的体成分改变，尤其是与脂肪分布异常相关的内脏脂肪堆积。不同地区对它的监管状态与获批适应症并不一致，部分市场仅限特定诊断人群使用。在一般人群中的长期效应、与其他激素的相互作用以及停药后的维持情况仍属开放问题，现有数据不足以给出普遍结论。
特沙莫瑞林是一种合成肽，其序列与人生长激素释放激素的 44 个氨基酸形式相关。它在 N 端带有反式-3-己烯酰基修饰，这一改动可减缓二肽基肽酶 IV 的降解。该化合物属于生长激素释放激素受体激动剂，可刺激垂体释放生长激素。研究文献通常将其归入合成肽类药物，而非小分子化合物。
监管记录显示，特沙莫瑞林于 2010 年在美国首次获得批准，用于人类免疫缺陷病毒感染相关的脂肪营养不良患者。批准依据来自降低内脏脂肪的临床试验，而非体重或瘦体重的普遍改善。后续出现了不同制剂版本，但其核心适应症保持一致。关于长期心血管结局和死亡率影响，现有证据仍不充分。
Zapomeran, sold under the brand name Kostaive is a self-amplifying mRNA-based COVID-19 vaccine. It contains a self-amplifying mRNA that encodes the SARS-CoV-2 spike protein. Self-amplifying means that the mRNA also carries instructions to make a protein called replicase. It was developed under the name ARCT-154, also known as VBC-COV19-154 in Vietnam, by Arcturus Therapeutics. For its development, Arcturus collaborated with Vinbiocare, a Vietnamese company, for support with clinical trials and manufacturing. Zapomeran was approved for medical use in Japan in November 2023, and it is the first self-amplifying mRNA-based COVID-19 vaccine to be approved. Zapomeran was authorized for medical use in the European Union in February 2025, and in the UK in January 2026.
Timber can be dried to any desired low moisture content by conventional or solar kiln drying, but in air drying, moisture contents of less than 18% are difficult to attain for most locations. The drying times are considerably less in conventional kiln drying than in solar kiln drying, followed by air drying. This means that if capital outlay is involved, this capital sits for a longer time when air drying is used. On the other hand, installing, operating and maintaining an industrial kiln is expensive. In addition, wood that is being air dried takes up space, which could also cost money. In air drying, there is little control over the drying conditions, so drying rates cannot be controlled. The temperatures employed in kiln drying typically kill all the fungi and insects in the wood if a maximum dry-bulb temperature of above 60°C is used for the drying schedule. This is not guaranteed in air drying. If air drying is done improperly (exposed to the sun), the rate of drying may be overly rapid in the dry summer months, causing cracking and splitting, and too slow during the cold winter months. Significant advantages of conventional kiln drying include higher throughput and better control of the final moisture content. Conventional kilns and solar drying both enable wood to be dried to any moisture content regardless of weather conditions. For most large-scale drying operations solar and conventional kiln drying are more efficient than air drying. Compartment-type kilns are most commonly used in timber companies.
organizing international conferences and workshops in mass spectrometry improving mass spectrometry education standardizing terminology in the field aiding in the dissemination of mass spectrometry through publications
== Awards == In 1986, Novotny was given the Award in Chromatography from the American Chemical Society. Novotny received the ANACHEM award in 1992. This award is given to outstanding analytical chemists for teaching, research, administration or other activities which have advanced of the field. Novotny was also selected as the LCGC Lifetime Achievement award recipient in 2019.
=== Pharmacokinetics === Hydroxylated metabolites can be detected in urine for up to 10 days after consumption. Mesocarb had erroneously been referred to as a prodrug of amphetamine. However, this was based on older literature that relied on gas chromatography as an analytical method. Subsequently, with the advent of mass spectroscopy, it has been shown that presence of amphetamine in prior studies was an artifact of the gas chromatography method. More recent studies using mass spectroscopy show that negligible levels of amphetamine are released from mesocarb metabolism.
Sources: en.wikipedia.org
=== United States === In May 2025, the national survey Rasmussen Reports reported that 57% of Americans supported an attack on Iran. Former chief negotiator and Secretary of State John Kerry commended Trump's effort and compared the negotiations to "Khomeini poisoned chalice". White House Press Secretary Karoline Leavitt has stated that should Iran develop nukes, there will be "all hell to pay". On April 18, Secretary of State Marco Rubio urged European countries to quickly decide on reimposing sanctions against Iran, warning that Iran is violating the existing agreement and nearing the capability to develop a nuclear weapon. Rubio later also said Iran can have a civilian nuclear energy program instead of a military WMD atomic weapons program. Secretary of Defense Pete Hegseth and national security advisor Mike Waltz were reportedly divided on whether US military should attack Iran. Trump told reporters he was in no rush to attack Iran and it still has a chance to "live happily without death". He also said the US would lead the pack in possibly attacking Iran and that there are only two alternatives, bombing them viciously or nicely, and that he was still undecided. Former special representative for Iran Elliott Abrams argued that Trump did not seek war. However, should the talks fail, Iran's nuclear program should be destroyed by Israel and/or the US Political commentator Tucker Carlson argued this was the worst time for US military intervention in Iran.
A few long-lived actinide isotopes, such as 244Pu and 250Cm, cannot be produced in reactors because neutron capture does not happen quickly enough to bypass the short-lived beta-decaying nuclides 243Pu and 249Cm; they can however be generated in nuclear explosions, which have much higher neutron fluxes.
==== Paid leave while on Family and Medical Leave Act leave ==== The temporary tax credit for employers who give paid leave to an employee while they are on Family and Medical Leave Act leave has been made permanent. In order to qualify for the tax credit, the employer must pay the employee at least 50% of the employee's usual wages. The amount of the tax credit used to be equal to 12.5% of eligible wages paid to an eligible employee, but it now increases by 0.25% for each percentage point paid above the 50% threshold, up to a maximum credit of 25%. In order to be eligible for the tax credit, the employee must have worked at least six months for the employer, which is up from 12 months previously. Paid family and medical leave that is required under state or local law is now eligible for the tax credit, as are employer-paid amounts for qualifying paid leave insurance policies.
== Nutritional sources == Myo-inositol is naturally present in a variety of foods, although tables of food composition do not always distinguish between lecithin, the relatively bioavailable lipid form and the biounavailable phytate/phosphate form. Foods containing the highest concentrations of myo-inositol and its compounds include fruits, beans, grains, and nuts. Fruits in particular, especially oranges and cantaloupe, contain the highest amounts of myo-inositol. It is also present in beans, nuts, and grains, however, these contain large amounts of myo-inositol in the phytate form, which is not bioavailable without transformation by phytase enzymes. Bacillus subtilis, the microorganism which produces the fermented food natto, produces phytase enzymes that may convert phytic acid to a more bioavailable form of inositol polyphosphate in the gut. Additionally, Bacteroides species in the gut secrete vesicles containing an active enzyme which converts the phytate molecule into bioavailable phosphorus and inositol polyphosphate, which is an important signaling molecule in the human body. Myo-inositol can also be found as an ingredient in energy drinks, either in conjunction with or as a substitute for glucose. In humans, myo-inositol is naturally made from glucose-6-phosphate through enzymatic dephosphorylation.
Sources: en.wikipedia.org
Regular lorazepam use during late pregnancy (the third trimester), carries a definite risk of benzodiazepine withdrawal syndrome in the neonate. Neonatal benzodiazepine withdrawal may include hypotonia, reluctance to suck, apneic spells, cyanosis, and impaired metabolic responses to cold stress. Symptoms of floppy infant syndrome and neonatal benzodiazepine withdrawal syndrome have been reported to persist from hours to months after birth. Lorazepam may also inhibit fetal liver bilirubin glucuronidation, leading to neonatal jaundice. Lorazepam is present in breast milk, so caution is exercised about lorazepam usage for breastfeeding patients.
==== Juan Alberto Kessel Linares elected as Grand Master ==== Late in the day on March 24, Juan Alberto Kessel Linares was elected as the new Grand Master of the Grand Lodge of Cuba to replace Urquía Carreño. On March 30, a week after his appointment as Grand Master, Kessel Linares accused Urquía Carreño of having stolen an additional $2,360 in August 2023. The money, according to Kessel Linares, had been given to him by the serving Grand Treasurer at the time, Salvador Orestes Arango Troncoso. When Urquía Carreño was eventually asked about the money by Grand Secretary Misiel Hernández Peraza, Urquía Carreño allegedly informed him that the money was in the possession of the recently elected Grand Treasurer, Airam Cervera. Kessel Linares then revealed that the Grand Lodge had filed an official complaint with the National Revolutionary Police at the Zapata Police Station in Havana.
=== Desolvation/coacervation and precipitation === In desolvation or coacervation, a non-solvent is added to a homogeneous polymer solution to produce individual, nanosized polymer complexes dispersed in the same solution. These complexes then undergo crosslinking to form nanogels with surface functionalization an optional next step. In precipitation, initiators and crosslinking agents are added to a homogenous monomer solution to induce a polymerization reaction. When the polymer chain reaches the desired length, the reaction is halted and a polymer colloidal suspension is formed. Surfactants are the final addition to produce nanosized polymers.
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.
The amino acid sequence matches human growth hormone-releasing hormone, but the amino terminus carries a trans-3-hexenoyl group instead of a free amine. That single structural change chiefly affects enzymatic stability rather than receptor selectivity.