Everything below concerns incretin. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2026-08-01. Where a claim depends on a specific study, the study is described rather than over-claimed.
开发进程从早期单次和多次给药研究推进至大规模后期试验。公开报告显示，参与者在体重和相关代谢指标上出现变化，但完整数据需经同行评审并接受独立复核。试验设计通常包括随机、双盲和对照设置，以区分药物效应与行为干预。监管提交和标签范围尚未确定；长期维持效果与心血管结局仍是开放问题。
与仅靶向单一受体的同类药物相比，瑞他鲁肽增加胰高血糖素受体成分，理论上可提高能量消耗并改变脂肪分布。临床中观察到的体重变化是否主要来自该额外机制，目前尚无定论。胃肠道反应是该类药物常见不良事件，试验中通过剂量递增和监测进行管理。停药后体重反弹、个体差异和长期耐受性仍需更多数据。
瑞他鲁肽是一种在研合成肽，同时作用于胰高血糖素样肽-1、葡萄糖依赖性促胰岛素多肽和胰高血糖素受体。该分子属于多受体激动剂类别，尚未获得任何监管机构的上市批准。当前临床开发主要针对肥胖和2型糖尿病，研究代号为LY3437943。已确立的信息包括受体靶点和部分中期试验结果；最终疗效、长期安全性和适用人群仍属开放问题。
Retatrutide is an investigational peptide developed by a pharmaceutical company as a multi-receptor agonist for treating obesity and type 2 diabetes. The compound emerged from research into gut-hormone analogues that act on several receptors simultaneously rather than on a single target. Early preclinical work examined how combined activity at three distinct receptors might produce greater metabolic effects than single-receptor compounds. Published phase 2 results have described substantial reductions in body weight among participants, although the compound remains unapproved in most jurisdictions as of the mid-2020s.
Pharmacologically, retatrutide acts as a triple agonist at the glucagon-like peptide-1 receptor, the glucose-dependent insulinotropic polypeptide receptor, and the glucagon receptor. Activation of the first two receptors is associated with improved insulin secretion and reduced appetite. The glucagon receptor component is thought to increase energy expenditure, a mechanism that distinguishes this molecule from dual-agonist compounds. Researchers continue to investigate how the three activities interact and whether the combined profile offers advantages that justify additional clinical testing.
Several questions about the compound remain unresolved. The durability of weight reduction after treatment stops, the frequency of gastrointestinal side effects, and the long-term cardiovascular profile are topics of ongoing study. Regulatory submissions and phase 3 trial outcomes have not been fully reported in the public literature. Because most available data come from controlled trials rather than general-population use, conclusions about effectiveness outside study settings are provisional. The distinction between established findings and open questions matters when interpreting early coverage of the drug.
| Property | Value | Notes |
|---|---|---|
| 研究代号 | LY3437943 | 文献中常用的实验标识 |
| 药物类别 | 三重受体激动剂 | 靶向GLP-1、GIP与胰高血糖素受体 |
| 开发状态 | 后期临床研究 | 尚未获批上市 |
| 主要研究人群 | 肥胖与2型糖尿病 | 入组条件依试验方案而定 |
| 常见同义词 | 瑞他鲁肽；LY3437943 | 名称拼写可能因语言和出版物而异 |
Retatrutide is an investigational synthetic peptide that acts as an agonist at three distinct G protein-coupled receptors. It combines activity at the glucagon-like peptide-1 receptor, the glucose-dependent insulinotropic polypeptide receptor, and the glucagon receptor within a single molecule. This multi-receptor profile distinguishes it from earlier incretin-based compounds that engage one or two of these pathways. Researchers designed the molecule to test whether simultaneous activation produces greater metabolic effects than single or dual agonism alone.
The peptide backbone is chemically modified to resist rapid enzymatic breakdown in the body. A fatty acid side chain promotes binding to serum albumin, which slows renal clearance and supports an extended circulation time. These modifications allow less frequent administration than would be possible with an unmodified peptide. The precise contribution of glucagon receptor activation to the overall metabolic effect remains an area of active investigation, because glucagon raises glucose while also increasing energy expenditure.
Development has progressed through early- and mid-stage human studies in adults with obesity and with type 2 diabetes. Published phase 2 data reported reductions in body weight and improvements in glycemic markers over the treatment period. No regulatory agency has approved the compound for any indication, and it remains available only within controlled research settings. Whether benefits observed in trials translate into durable outcomes after treatment stops is not yet established.
Acting as a triple agonist, the molecule binds the GLP-1, GIP, and glucagon receptors. GLP-1 activity slows gastric emptying and dampens appetite, while GIP signaling contributes to insulin sensitivity and fat metabolism. Glucagon receptor engagement raises energy expenditure and encourages fat breakdown, although it can also elevate blood glucose. Combining three pathways is intended to yield larger weight reduction than single or dual agonists, and researchers continue to examine how the balance among them shapes tolerability.
Clinical studies have reported notable reductions in body weight among participants. Early trials measured safety and explored several dose levels, and later studies tracked body-weight change over months of treatment. Investigators also monitor effects on glycemic markers, liver fat, and blood lipids. Because the compound is still in development, questions about long-term safety, cardiovascular outcomes, and durability after treatment ends remain open.
Peptides in this class degrade mainly through hydrolysis, oxidation, and aggregation. The lipid modification improves plasma residence time but can also promote self-association in aqueous solution at higher concentrations. Oxidation of methionine and deamidation of asparagine residues are common chemical liabilities that accumulate during storage. Stability studies therefore track purity loss, aggregate formation, and changes in receptor-binding potency over time under defined temperature and humidity conditions.
Solid peptide is generally held as a lyophilised powder at low temperature to slow degradation, with desiccant to limit moisture uptake. Reconstituted solutions are less stable and are usually kept refrigerated and protected from light for short periods. Repeated freeze-thaw cycles are avoided because they encourage aggregation. Laboratory handling includes work in a fume hood or laminar flow cabinet to limit inhalation and contamination. Weighing and transfer steps are performed with antistatic tools to reduce static-driven loss of fine powder.
=== Magnetic droplets === The micro-magnetofluidic method is the control of magnetic fluids by an applied magnetic field on a microfluidic platform, offering wireless and programmable control of the magnetic droplets. Hence, the magnetic force can also be used to perform various logical operations, in addition to the hydrodynamic force and the surface tension force. The magnetic field strength, type of the magnetic field (gradient, uniform or rotating), magnetic susceptibility, interfacial tension, flow rates, and flow rate ratios determine the control of the droplets on a micro-magnetofluidic platform. Magnetic droplets, in the context of droplet-based microfluidics, are microliter size droplets that are either composed of ferrofluids or contain some magnetic component that allows for manipulation via an applied magnetic field. Ferrofluids are homogenous mixtures of colloidal solutions of magnetic nanoparticles in a liquid carrier. Two applications of magnetic droplets are the control and manipulation of microfluidic droplets in a microenvironment and the fabrication, transport, and utilization of nanomaterial constructs in the microdroplets. Manipulating magnetic droplets can be used to perform tasks such as arranging droplets into an ordered array for applications in cell culture studies, while the use of magnetic droplets for nanostructure fabrication can be used in drug delivery applications.
=== Bulb blackening === In a conventional lamp, the evaporated tungsten condenses on the inner surface of the glass envelope, darkening it. For bulbs that contain a vacuum, the darkening is uniform across the entire surface of the envelope. When a filling of inert gas is used, the evaporated tungsten is carried in the thermal convection currents of the gas, and is deposited preferentially on the uppermost part of the envelope, blackening just that portion of the envelope. Study of the problem of bulb blackening led to the discovery of thermionic emission, the invention of the vacuum tube, and evaporation deposition used to make mirrors and other optical coatings. A very small amount of water vapor inside a light bulb can significantly increase lamp darkening. Water vapor dissociates into hydrogen and oxygen at the hot filament. The oxygen attacks the tungsten metal, and the resulting tungsten oxide particles travel to cooler parts of the lamp. Hydrogen from water vapor reduces the oxide, reforming water vapor and continuing this water cycle. The equivalent of a drop of water distributed over 500,000 lamps will significantly increase darkening. Small amounts of substances such as zirconium are placed within the lamp as a getter to react with any oxygen that may bake out of the lamp components during operation. Some old, high-powered lamps used in theater, projection, searchlight, and lighthouse service with heavy, sturdy filaments contained loose tungsten powder within the envelope.
==== Urquía Carreño resigns ==== On August 18, 2024, a special session of more than a hundred Freemasons was called by Urquía Carreño to gather at the theatre hall of the Grand Lodge of Cuba, on the 3rd floor of the building. One Cuban Freemason told reporters that: "...he had manipulated a circus to stay in office. He's shameless, they were lies after lies; all the brothers were standing asking him to hand over the keys to his office." The people in the theatre started chanting: "Hand over and leave!" After tensions had escalated, Urquía Carreño left the theatre to go back to his office. However, the Freemasons followed him up to the eleventh floor. Urquía Carreño agreed to meet with representatives of the delegation in his office, so three men were chosen to represent them. The three men sat with three of Urquía Carreño's men, and discussed terms of negotiation, while the rest of the delegation waited in the hallway. On August 18, 2024, after two hours of negotiation, Urquía Carreño finally relented and agreed to tender his resignation. In his resignation, he said that it was: "for the good of the institution." Mayker Filema Duarte assumed the role of Acting Grand Master until an election could be held, and immediately launched a financial audit of the entire Grand Lodge. At the beginning of September, Filema Duarte accused Urquía Carreño of the theft of yet another $MN2,116,555.33, stolen sometime between January and August 2024.
Sources: en.wikipedia.org
=== Atherosclerosis === Rapamycin can accelerate degradation of oxidized LDL cholesterol in endothelial cells, thereby lowering the risk of atherosclerosis. Oxidized LDL cholesterol is a major contributor to atherosclerosis.
Take white (Yemeni) alum, dissolve it and purify it by filtration. Then distil (green?) vitriol with copper-green (the acetate), and mix (the distillate) with the filtered solution of the purified alum, afterwards let it solidify (or crystallise) in the glass beaker. You will get the best qalqadis (white alum) that may be had. In an anonymous Latin work variously attributed to Aristotle (under the title Liber Aristotilis, 'Book of Aristotle'), to al-Razi (under the title Lumen luminum magnum, 'Great Light of Lights'), or to Ibn Sina, the author speaks of an 'oil' (oleum) obtained through the distillation of iron(II) sulfate (green vitriol), which was likely 'oil of vitriol' or sulfuric acid. The work refers multiple times to Jabir ibn Hayyan's Seventy Books (Liber de septuaginta), one of the few Arabic Jabir works that were translated into Latin. The author of the version attributed to al-Razi also refers to the Liber de septuaginta as his own work, showing that he erroneously believed the Liber de septuaginta to be a work by al-Razi. There are several indications that the anonymous work was an original composition in Latin, although according to one manuscript it was translated by a certain Raymond of Marseilles, meaning that it may also have been a translation from the Arabic. According to Ahmad Y. al-Hassan, three recipes for sulfuric acid occur in an anonymous Garshuni manuscript containing a compilation taken from several authors and dating from before c. 1100 AD. One of them runs as follows:
The algae are a heterogeneous group of mostly photosynthetic organisms that produce oxygen and lack the reproductive features and structural complexity of land plants. This concept includes the cyanobacteria, which are prokaryotes, and all photosynthetic protists, which are eukaryotes. They contain chlorophyll a as their primary photosynthetic pigment, and generally inhabit aquatic environments. However, there are many exceptions to this definition. Many non-photosynthetic protists are included in the study of algae, such as the heterotrophic relatives of euglenophytes or the numerous species of colorless algae that have lost their chlorophyll during evolution (e.g., Prototheca). Some exceptional species of algae tolerate dry terrestrial habitats, such as soil, rocks, or caves hidden from light sources, although they still need enough moisture to become active.
Sources: en.wikipedia.org
== Patient Blood Management == Patient blood management is a patient-centered, systematic, evidence-based approach to improve patient outcomes by managing and preserving a patient's own blood, while promoting patient safety and empowerment.” TP's can play an active role in helping to establish and embed PBM practices to improve patient and safety outcomes. Some PBM practices activities that TPs could undertake include:
=== Graphene quantum dots === A graphene quantum dot (GQD) is a graphene fragment with a size less than 100 nm. The properties of GQDs are different from bulk graphene due to the quantum confinement effects which only become apparent when the size is smaller than 100 nm.
The birch is New Hampshire's state tree and the national tree of Finland and Russia. The yellow birch is the official tree of the province of Quebec (Canada). The birch is a very important element in Russian culture and represents the grace, strength, tenderness and natural beauty of Russian women as well as the closeness to nature of the Russians. It's associated with marriage and love. There are numerous folkloric Russian songs in which the birch tree occurs. The Ornäs birch is the national tree of Sweden. The Czech word for the month of March, Březen, is derived from the Czech word bříza meaning birch, as birch trees flower in March under local conditions. The silver birch tree is of special importance to the Swedish city of Umeå. In 1888, the Umeå city fire spread all over the city and nearly burnt it down to the ground, but some birches, supposedly, halted the spread of the fire. To protect the city against future fires, wide avenues were created, and these were lined with silver birch trees all over the city. Umeå later adopted the unofficial name of "City of the Birches (Björkarnas stad)". Also, the ice hockey team of Umeå is called Björklöven, translated to English "The Birch Leaves". "Swinging" birch trees was a common game for American children in the nineteenth century. American poet Lucy Larcom's "Swinging on a Birch Tree" celebrates the game. The poem inspired Robert Frost, who pays homage to the act of climbing birch trees in his more famous poem, "Birches".
Sources: en.wikipedia.org
尚未。它仍处于临床研究阶段，任何监管批准都取决于正在进行的试验结果和提交审评。可公开获取的信息以试验注册和会议摘要为主。
司美格鲁肽主要靶向GLP-1受体，而瑞他鲁肽同时作用于GLP-1、GIP和胰高血糖素受体。这种三重机制旨在产生不同的代谢效应，但临床差异仍需头对头研究确认。
长期心血管结局、停药后维持效果、罕见不良事件和不同人群中的获益风险比尚未完全确定。完整三期数据和监管审评将影响结论。
It is designed as a triple agonist acting on the GLP-1, GIP, and glucagon receptors. This combination is intended to influence appetite, insulin secretion, and energy expenditure. Single-receptor and dual-receptor compounds act on a narrower set of targets.