The short version of 生长激素释放激素 fits in a sentence. The long version — which is the one that helps — is below.
Reviewed 2025-11-11. Anything still debated is marked as such rather than presented as settled.
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.
Binding of tesamorelin to GHRH receptors on pituitary somatotroph cells triggers cyclic AMP signaling and the release of growth hormone into circulation. Because the peptide acts upstream of the growth hormone axis, its effects are partly mediated by hepatic insulin-like growth factor 1 (IGF-1) production. The pulsatile character of endogenous growth hormone secretion is preserved rather than replaced. Whether amplified signaling produces effects beyond those of native GHRH remains an area of ongoing investigation.
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。
在临床研究之外，特沙莫瑞林常被讨论为生长激素分泌促进剂，但这一说法需要限定。它并不等同于生长激素本身，也不属于普通减重药物。部分研究关注其减少腹部脂肪和改善脂质谱的潜力，另一些研究则关注胰岛素抵抗和 IGF-1 升高等信号。这些效应的临床意义仍在评估中，尚未形成统一结论。
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。
| Property | Value | Notes |
|---|---|---|
| Molecular class | Synthetic peptide | GHRH receptor agonist |
| Residue count | 44 amino acids | N-terminal trans-3-hexenoyl group |
| Approximate mass | About 5.1 kDa | Derived from the peptide sequence |
| Primary target | Pituitary GHRH receptor | Somatotroph cells of the anterior pituitary |
| Downstream marker | IGF-1 | Measured indirectly in circulation |
A Phase 3 program led to regulatory approval in the United States in 2010 for reduction of excess visceral abdominal fat in adults with HIV and lipodystrophy. Subsequent studies examined effects on liver fat, muscle area, and metabolic markers, with mixed findings for some endpoints. Long-term cardiovascular outcomes and effects on mortality remain uncertain because most trials were relatively short and focused on imaging-based fat measurements. Use in populations without HIV has been studied experimentally but is not part of the approved indication.
Tesamorelin is a synthetic analog of growth hormone-releasing hormone, a peptide hormone produced by the hypothalamus. The molecule retains the 44-amino-acid sequence of human GHRH and carries a trans-3-hexenoyl modification at its N-terminus. This modification increases resistance to enzymatic degradation and extends the peptide's functional stability relative to native GHRH. The compound is supplied as a lyophilized powder for reconstitution and subcutaneous administration in clinical settings. Its development code was TH9507, and it belongs to the GHRH analog class. It is not a growth hormone product; instead, it acts upstream to stimulate endogenous growth hormone release.
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.
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.
Tesamorelin is a synthetic peptide of 44 amino acids that reproduces the sequence of human growth hormone-releasing hormone (GHRH) and carries a trans-3-hexenoyl group on its N-terminal tyrosine. That small fatty-acid modification blocks cleavage by dipeptidyl peptidase-4, the enzyme that rapidly degrades native GHRH in plasma. The result is a molecule with a longer circulating half-life than the natural hormone while retaining the same receptor target. It is supplied as a lyophilized powder for reconstitution and belongs to the broader class of GHRH analogs studied for effects on pituitary growth hormone secretion.
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.
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.
Tesamorelin is a synthetic peptide analog of growth hormone-releasing hormone, composed of 44 amino acids. It was designed to retain the biological activity of the native hormone while resisting rapid enzymatic degradation. The compound is classified as a growth hormone secretagogue and belongs to the broader family of hypothalamic releasing factors. In research and clinical settings, it is studied for its ability to stimulate pituitary growth hormone release. Its structure includes a modification at the N-terminus that contributes to an extended half-life relative to native growth hormone-releasing hormone.
She leaves during the first episode of the fourth season, and returns briefly to visit after learning of her mother's breast cancer diagnosis. To prevent her from worrying, Haddie's parents tell her the cancer is benign and send her back to Cornell to live her dream college experience. At the end of season 5, she returns home for a visit with family with her friend Lauren. Max sees Haddie kissing Lauren, and Haddie soon announces that she is in a same-sex relationship with Lauren. Haddie returns for the series finale; no mention is made of her relationship status.
== Occurrence == Obsidian is found near volcanoes in locations which have undergone rhyolitic eruptions. It can be found in Argentina, Armenia, Azerbaijan, Australia, Canada, Chile, Georgia, Ecuador, El Salvador, Greece, Guatemala, Hungary, Iceland, Indonesia, Italy, Japan, Kenya, Mexico, New Zealand, Papua New Guinea, Peru, Russia, Scotland, the Canary Islands, Turkey and the United States. Obsidian flows which are so large that they can be hiked on are found within the calderas of Newberry Volcano (Big Obsidian Flow, 700 acres) and Medicine Lake Volcano in the Cascade Range of western North America, and at Inyo Craters east of the Sierra Nevada in California. Yellowstone National Park has a mountainside containing obsidian located between Mammoth Hot Springs and the Norris Geyser Basin, and deposits can be found in many other western U.S. states including Arizona, Colorado, New Mexico, Texas, Utah, and Washington, Oregon and Idaho.
=== Defining agrifood systems resilience === The resilience of agrifood systems builds on the concept of resilience, which originated in the study of ecosystems and evolved over 50 years into an object of study across an array of disciplines, including engineering, agriculture, economics and psychology. Although there is little agreement today as to a precise definition across disciplines, broadly speaking, resilience can be defined as the dynamic capacity to continue to achieve goals despite disturbances. In a call for cross-sectoral collaboration to prevent, anticipate, absorb, adapt and transform in the face of shocks and stresses across all sectors of society, the United Nations has developed and adopted the UN Common Guidance on Helping Build Resilient Societies. Since there is a wide variety of risks relating to understanding resilience, the UN offers the following definition: "the ability of individuals, households, communities, cities, institutions, systems and societies to prevent, anticipate, absorb, adapt, and transform positively, efficiently and effectively when faced with a wide range of risks, while maintaining an acceptable level of functioning and without compromising long-term prospects for sustainable development, peace and security, human rights and well-being for all." Resilience building is a system-wide multi-risk, multi-actor and multisectoral effort.
==== Transportation of RNP and viral proteins to cellular membrane ==== After translation, SeV nucleocapsids (RNP complex) assemble, and move using microtubules network through intracellular vesicular trafficking pathway. In preparation for the budding process, three viral lipophilic proteins HN, F and M migrate through the secretory pathway to a host cell membrane. It is assumed that the interaction of these three proteins with each other is needed for their migration to cellular budding sites. The binding of lipophilic protein complex to the host membrane facilitates the interaction of this three protein complex with the SeV nucleocapsid. It has been shown that for efficient virion production SeV induces the β-cytoplasmic actin remodeling in its host cell.
Sources: en.wikipedia.org
The Proteograph Product Suite includes the Proteograph ONE Assay: a reagent system that provides for multiplexed nanoparticles for protein enrichment, the SP200 Automation Instrument: a fluid handling robotic system for preparing a large number of biological samples for mass spectrometry analysis, and the Proteograph Analysis Suite (PAS): a cloud-based software solution for large-scale proteomics data analysis.
== Standards == The International Organization for Standardization (ISO) sets international standards to ensure that products and services are safe, reliable, and of good quality. There are a number of ISO standards regarding fruits and vegetables. ISO 1991-1:1982 lists the botanical names of sixty-one species of plants used as vegetables along with the common names of the vegetables in English, French, and Russian. ISO 67.080.20 covers the storage and transport of vegetables and their derived products.
cocovenenans is commonly found in plants and soil, which can be taken up by coconuts and corn, leading to the synthesis of bongkrek acid during the fermentation of such foods. Since 1975, consumption of contaminated tempe bongkrek has caused more than 3000 cases of bongkrek acid poisoning. In Indonesia, the overall reported mortality rate has turned out to be 60%. Due to the severity of the situation, the production of tempe bongkrek has been banned since 1988. Clandestine manufacture continues, however, due to the popular flavor. The problem of contamination is not encountered with bean and grain tempeh, which have a different composition of fatty acids that is not favorable for the growth of B. gladioli, but encourages growth of Rhizopus instead. When bean or grain tempeh has the proper color, texture and smell, it is a very strong indication the product is safe. Yellow tempe bongkrèk is always highly toxic due to toxoflavin, but tempe bongkrèk with a normal coloration may still contain lethal amounts of bongkrek acid.
== 1961–64 == South Africa's isolation increased in 1960–61 when it declared a republic and left the Commonwealth. SAOCGA was renamed SAONGA (the South African Olympic and National Games Association) as it was no longer eligible for the Commonwealth Games; it was later more usually called SANOC (South Africa National Olympic Committee). In 1962, Jan de Klerk announced a ban on South Africans appearing in mixed-race competition inside or outside the country. In 1963, Dennis Brutus founded the South African Non-Racial Olympic Committee (SANROC) which lobbied the IOC to expel SAONGA. Brutus was subjected to travel restrictions and forbidden from attending meetings, so he fled to London. The IOC moved its 1963 conference from Nairobi to Baden-Baden after the Kenyan government refused to grant a visa to the South African delegate. To bypass its own ban on mixed-race competition, SANOC was prepared to stage its Olympic trials abroad, but the events would still be segregated. The IOC voted to revoke SANOC's invitation to the 1964 Summer Olympics unless it declared its opposition to the government's policy. SANOC did not do so and was excluded from the Games, although it remained affiliated to the IOC.
The Census and Statistics Department estimated Hong Kong's population at 7,413,070 in 2021. The overwhelming majority (91.6%) is Chinese, most of whom are Taishanese, Teochew, Hakka, and other Cantonese peoples. The remaining 8.4% are non-ethnic Chinese minorities, primarily Filipinos, Indonesians, and South Asians. However, most Filipinos and Indonesians in Hong Kong are short-term workers. According to a 2021 thematic report by the Hong Kong government, after excluding foreign domestic helpers, the real number of non-Chinese ethnic minorities in the city was 301,344, or 4% of Hong Kong's population. About half the population have some form of British nationality, a legacy of colonial rule; 3.4 million residents have British National (Overseas) status, and 260,000 British citizens live in the territory. The vast majority also hold Chinese nationality, automatically granted to all ethnic Chinese residents at the handover. Headline population density exceeds 7,060 people/km2 It is the fourth-highest in the world.
Sources: en.wikipedia.org
It mirrors the 44-residue form of human growth hormone-releasing hormone. A hexenoyl group on the N-terminal tyrosine distinguishes it from the unmodified hormone. The change is intended to improve resistance to enzymatic breakdown.
The N-terminal modification reduces cleavage by circulating peptidases, so the peptide persists longer than native GHRH. That persistence is the main rationale for the synthetic design. Comparative half-life values in humans are reported in regulatory review documents rather than in general reference literature.
Reductions in visceral adipose tissue have been measured in controlled studies of defined populations. Whether the effect generalizes to other groups and persists after treatment stops is less clear. Longer-term outcome data remain limited.
特沙莫瑞林是国际非专利名称，指一种经过 N 端修饰的生长激素释放激素类似物。它被归类为合成肽，序列与 GHRH(1-44) 密切相关。该名称不指代任何特定品牌或剂型。