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 2026-06-05. Where a claim depends on a specific study, the study is described rather than over-claimed.
Tirzepatide activates both the glucose-dependent insulinotropic polypeptide receptor and the glucagon-like peptide-1 receptor, making it a dual agonist rather than a selective agent. Engagement of the GLP-1 receptor is linked to glucose-dependent insulin release, slower gastric emptying, and reduced appetite signalling. The relative contribution of the GIP arm remains an active research question; proposed roles include improved insulin sensitivity and altered adipose tissue handling. Receptor occupancy studies suggest the molecule interacts with both targets at circulating concentrations achieved during therapy.
Development began in the 2010s, when researchers modified a GIP-based scaffold to add GLP-1 activity and then attached the fatty diacid to lengthen its half-life. Clinical evaluation proceeded through large phase 3 programmes in type 2 diabetes and in obesity, and regulators in the United States cleared the compound for type 2 diabetes in 2022 and for chronic weight management in 2023. Several cardiovascular and metabolic outcome studies are still reporting, so the picture of long-term benefit and risk is incomplete. Approvals in other regions followed on different timelines.
Tirzepatide is a synthetic peptide of 39 amino acids that carries a C20 fatty diacid side chain attached through a linker. Its molecular formula is C225H348N48O68, and its molecular weight is about 4813 daltons. The compound belongs to the incretin mimetic class and is administered by subcutaneous injection. The fatty acid chain promotes binding to serum albumin, which slows renal clearance and extends the circulation time of the molecule. It was identified during screening of sequences derived from glucose-dependent insulinotropic polypeptide.
In clinical research, tirzepatide has been studied in randomized controlled trials for glycemic control and body weight reduction. These trials typically measure changes in hemoglobin A1c and body weight over periods of several months. The drug is administered by subcutaneous injection, and its pharmacokinetic profile supports once-weekly dosing. Post-marketing surveillance continues to evaluate long-term outcomes and rare adverse events.
Tirzepatide is a synthetic peptide that acts as a dual agonist at the glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptors. The molecule contains 39 amino acids and features a C20 fatty diacid moiety attached via a linker, which promotes albumin binding and extends its circulating half-life. Its sequence incorporates non-natural amino acids and modifications that reduce susceptibility to degradation by dipeptidyl peptidase-4. This dual receptor activity distinguishes it from selective GLP-1 receptor agonists.
| Property | Value | Notes |
|---|---|---|
| Molecular formula | C225H348N48O68 | Peptide backbone with a fatty diacid chain |
| Molecular weight | About 4813 Da | Calculated from the formula |
| Receptor targets | GIP and GLP-1 receptors | Dual agonist activity at both sites |
| Route of administration | Subcutaneous injection | No approved oral form at present |
| Elimination half-life | About 5 days | Supports extended intervals between administrations |
An extended fatty diacid moiety promotes binding to serum albumin, which slows renal clearance and extends the circulating half-life to roughly five days. That property supports once-weekly administration and largely explains the dosing interval described in clinical reports. Published data come mainly from large randomised programmes that evaluated glycaemic control and body weight over periods of many months. Long-term outcomes beyond those trial windows, including what happens after treatment stops, remain an active area of investigation.
Tirzepatide is a synthetic peptide built from thirty-nine amino acids. Its sequence is derived from native glucose-dependent insulinotropic polypeptide, or GIP, with several non-natural residues and a fatty diacid side chain attached through a linker. The molecule behaves as a dual agonist at two incretin receptors, GIP and GLP-1, instead of targeting a single receptor. This dual engagement separates it from earlier single-receptor incretin compounds and underpins most of its reported pharmacological activity.
Receptor activation by tirzepatide raises intracellular cyclic AMP through Gs-coupled signalling at both targets. At the GLP-1 receptor the downstream effect includes glucose-dependent insulin release, suppressed glucagon secretion, delayed gastric emptying, and reduced appetite signalling in the hypothalamus. GIP receptor engagement adds insulinotropic activity and appears to influence lipid handling in adipose tissue. Because both receptors are stimulated at the same time, the pharmacological profile differs from that of selective GLP-1 receptor agonists, and the relative contribution of each arm remains an area of active investigation.
Clinical development proceeded through large phase 3 programmes in type 2 diabetes and in obesity or overweight with at least one weight-related comorbidity. Regulatory approvals followed in several jurisdictions for both indications. Weekly subcutaneous dosing reflects an elimination half-life of roughly five days. Open questions include the durability of metabolic effects after treatment stops, long-term cardiovascular and hepatic outcomes beyond completed trials, and whether the dual mechanism confers benefits independent of total receptor occupancy. Published literature continues to expand on these points. Substantial uncertainty remains about interindividual variability in response.
Tirzepatide is a synthetic linear peptide of 39 amino acids that acts as a dual agonist at the glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptors. Its sequence derives from native GIP but incorporates non-natural residues and a C20 fatty diacid moiety linked to a lysine side chain. The lipophilic chain promotes albumin binding, which slows renal clearance and extends circulation time. The unmodified peptide has a molecular formula of C225H348N48O68 and a molecular mass near 4,813 daltons.
Structural work on the molecule centers on a C20 fatty diacid moiety attached through a linker to the peptide backbone. This side chain promotes reversible binding to serum albumin, which slows renal clearance and supports a prolonged action profile. The peptide backbone incorporates aminoisobutyric acid substitutions that limit recognition by digestive enzymes. Together these modifications produce a molecule that is stable enough for subcutaneous delivery but still dependent on careful manufacturing control. Analytical characterization of the active pharmaceutical ingredient typically follows the conventions used for other synthetic peptides.
Tirzepatide is a synthetic peptide composed of 39 amino acids. It acts as a dual agonist at two incretin receptors, the glucose-dependent insulinotropic polypeptide receptor and the glucagon-like peptide-1 receptor. The molecule was designed by modifying the native sequence of glucose-dependent insulinotropic polypeptide to improve metabolic stability and extend its circulation time. Its structure includes several non-natural amino acid residues and a fatty acid side chain. These features distinguish it from earlier single-receptor incretin analogs studied in the same period.
脂肪酸侧链的存在使该肽与血浆白蛋白结合能力增强，从而延长循环半衰期，支持每周一次给药的用药间隔。白蛋白结合同时改变组织分布特征，减慢肾脏清除速度。该设计思路在多种长效肽类药物中被反复采用，属于既定的药代动力学策略。
该化合物的名称与结构由国际非专利名称体系统一维持，不同文献中出现的同义写法主要在拼写顺序或盐形式描述上不同。研究者通常通过受体结合实验、细胞内环磷酸腺苷积累测定以及动物模型来确认其双激动活性。相当一部分分子层面的细节——例如两条受体通路之间的信号交叉作用——尚处于开放问题状态。
A 1986 study published in the American Journal of Public Health claimed that, citing World Bank data, the Soviet model provided a better quality of life and human development than market economies at the same level of economic development in most cases. Some scholars on the left have posited that the end of the Soviet Union and communism as a global force allowed neoliberal capitalism to become a global system, which has resulted in rising economic inequality. In her 2012 book The Communist Horizon, Jodi Dean argued that there is a double standard among all sides of the political spectrum, including conservatives, liberals, and social democrats, in how communism and capitalism are perceived nearly two decades after the dissolution of the Soviet Union. Dean stated that the worst excesses of capitalism are often minimized, while communism is often equated only with the Soviet Union, and experiments in Eastern Europe, Latin America, Africa, and Asia are often ignored, with an emphasis placed on the Stalin era and its violent excesses including gulags, purges, droughts and famines, and almost no consideration for the industrialization and modernization of the Soviet economy, the successes of Soviet science (such as the Soviet space program), or the rise in the standard of living for the once predominantly agrarian society.
Emus begin to settle down at sunset and sleep during the night. They do not sleep continuously but rouse themselves several times during the night. When falling asleep, emus first squat on their tarsi and enter a drowsy state during which they are alert enough to react to stimuli and quickly return to a fully awakened state if disturbed. As they fall into deeper sleep, their neck droops closer to the body and the eyelids begin to close. If there are no disturbances, they fall into a deeper sleep after about twenty minutes. During this phase, the body is gradually lowered until it is touching the ground with the legs folded underneath. The beak is turned down so that the whole neck becomes S-shaped and folded onto itself. The feathers direct any rain downwards onto the ground. It has been suggested that the sleeping position is a type of camouflage, mimicking a small mound. Emus typically awake from deep sleep once every ninety minutes or so and stand upright to feed briefly or defecate. This period of wakefulness lasts for ten to twenty minutes, after which they return to slumber. Overall, an emu sleeps for around seven hours in each twenty-four-hour period. Young emus usually sleep with their neck flat and stretched forward along the ground surface.
=== History === In January 2009, the U.S. Department of Defense announced the largest RFID award in history, a $429 million contract for DASH7 devices, to four prime contractors, namely Savi Technology, Northrop Grumman Information Technology, Unisys and Systems & Processes Engineering Corporation (SPEC). In March 2009, the DASH7 Alliance, a non-profit industry consortium to promote interoperability among DASH7-compliant devices, was announced, and as of July 2010 has more than 50 participants in 23 countries. It was meant to be similar to what the Wi-Fi Alliance does for IEEE 802.11, for wireless sensor networking. In April 2011, the DASH7 Alliance announced adoption of DASH7 Mode 2, based on the ISO 18000-7 standard that makes better use of modern silicon to achieve faster throughput, multi-hop, lower latency, better security, sensor support, and a built-in query protocol. In March 2012, the DASH7 Alliance announced that it was making the DASH7 Mode 2 specification available to non-members. In July 2013, the DASH7 Alliance announced the DASH7 Alliance Protocol Draft 0.2. In May 2015, the DASH7 Alliance publicly released v1.0 of the DASH7 Alliance Protocol. In January 2017, the DASH7 Alliance publicly released the v1.1 of the DASH7 Alliance Protocol. The version constitutes a major update of v1.0, in particular in the area of security and interoperability.
=== Digital literacy === Despite being commonly known as "digital natives", Generation Z is not necessarily digitally literate. The 2018 International Computer and Information Literacy Study (ICILS), conducted on 42,000 eighth-graders (or equivalents) from 14 countries, found that only two percent were sufficiently proficient with information devices to justify that description, and only 19% could work independently with computers to gather information and manage their work. In the U.S., 90% reached Level 1, 66% Level 2, 25% Level 3, and 2% Level 4. Among American eighth-graders, 72% said they searched for information on the Internet at least once a week or every school day, and 65% reported they were autodidactic information finders on the Internet. The role of Generation Z in the future "digital economy" remains uncertain as they still lack the skills they need to join the workforce. At least initially, they struggle with office items such as printers or scanners. Many are also unfamiliar with touch typing.
IPF is believed to be the result of an aberrant wound healing process including/involving abnormal and excessive deposition of collagen (fibrosis) in the pulmonary interstitium with minimal associated inflammation. Cellular senescence is suspected to be a central contributing cause, a belief which is supported by benefits seen in patients given senolytic therapy. It is hypothesized that the initial or repetitive injury in IPF occurs to the lung alveolar epithelial cells (pneumocytes), the type I and type II cells, which line the majority of the alveolar surface. When type I cells are damaged or lost, it is thought that type II cells undergo proliferation to cover the exposed basement membranes. In normal repair, the hyperplastic type II cells die and the remaining cells spread and undergo a differentiation process to become type I cells. Under pathologic conditions and in the presence of transforming growth factor beta (TGF-β), fibroblasts accumulate in these areas of damage and differentiate into myofibroblasts that secrete collagen and other proteins. In the current classification of the pathogenesis of IPF, it is believed that it occurs by way of the formation of a UIP (usual interstitial pneumonia) lesion, which then undergoes the aforementioned pathological condition characteristic of IPF. Other proposed repeated injury mechanisms indicate that IPF may result not just from a UIP lesion, but also from NSIP and DAD (nonspecific interstitial pneumonia and diffuse alveolar damage) lesions, or a combination of several.
Sources: en.wikipedia.org
In addition, NADPH is used by enzymes including pyrroline-5-carboxylate synthase (P5CS) in proline biosynthesis, alpha-aminoadipic semialdehyde synthase (AASS) in lysine degradation, and 2,4-dienoyl-CoA reductase 1 (DECR) in the auxiliary pathway of mitochondrial beta oxidation of polyunsaturated fatty acids.
During the Ajuran Sultanate period, the city-states and republics of Merca, Mogadishu, Barawa, Hobyo and their respective ports flourished and had a lucrative foreign commerce with ships sailing to and from Arabia, India, Venetia, Persia, Egypt, Portugal, and as far away as China. Vasco da Gama, who passed by Mogadishu in the 15th century, noted that it was a large city with houses several storeys high and large palaces in its centre, in addition to many mosques with cylindrical minarets. The Harla, an early Hamitic group of tall stature who inhabited parts of Somalia, Tchertcher and other areas in the Horn, also erected various tumuli. These masons are believed to have been ancestral to ethnic Somalis. In the 16th century, Duarte Barbosa noted that many ships from the Kingdom of Cambaya in modern-day India sailed to Mogadishu with cloth and spices, for which they in return received gold, wax and ivory. Barbosa also highlighted the abundance of meat, wheat, barley, horses, and fruit on the coastal markets, which generated enormous wealth for the merchants. Mogadishu, the centre of a thriving textile industry known as toob benadir (specialised for the markets in Egypt, among other places), together with Merca and Barawa, also served as a transit stop for Swahili merchants from Mombasa and Malindi and for the gold trade from Kilwa. Jewish merchants from the Hormuz brought their Indian textile and fruit to the Somali coast in exchange for grain and wood.
=== Logo and name === Since the opening of the restaurant chain, many users of the social networks VKontakte and Twitter did not like the name "Tasty, period"; however, other users reported that the variant of the name "Uncle Vanya" was not so bad. Critics of the new logo have noted its similarity to the logo of Marriott International, which also operates in Russia. For example, some said that the logo looks like "the logo of the Marriott hotel combined with the Flag of Bangladesh." On the opening day, a protester held up a banner: "Bring back Big Mac!". He was quickly removed from the scene. According to Nikolai Grigoriev, member of the Board of the Guild of Marketeers, the name of the fast food chain will not take root among consumers, he believes that the network may soon be renamed due to inconvenience of the name:
== Biography == Franciszek Gajowniczek, a Roman Catholic, was born in Strachomin near Mińsk Mazowiecki. After the reconstitution of sovereign Poland, he moved to Warsaw in 1921, married, and had two sons. He was a professional soldier, a Polish army sergeant, who took part in the defense of Wieluń as well as Warsaw in September 1939 during the 1939 invasion of Poland by Nazi Germany. After the Battle of Modlin Gajowniczek was captured by the Gestapo in Zakopane while crossing the border into Slovakia and sentenced to forced labour in Tarnów.
When the apical bud is removed, the lowered IAA concentration allows the lateral buds to grow and produce new shoots, which compete to become the lead growth. Pruning techniques such as coppicing and pollarding make use of this natural response to curtail direct plant growth and produce a desired shape, size, and/or productivity level for the plant. The principle of apical dominance is manipulated for espalier creation, hedge building, or artistic sculptures called topiary. If the SAM is removed, it stimulates growth in the lateral direction. By careful pruning, it is possible to create remarkable designs or patterns. Some fruit trees have strong apical dominance, and young trees can become "leggy", with poor side limb development. Apical dominance can be reduced in this case, or in cases where limbs are broken off by accident, by cutting off the auxin flow above side buds that one wishes to stimulate. This is often done by orchardists for young trees. Occasionally, strong apical dominance is advantageous, as in the "Ballerina" apple trees. These trees are intended to be grown in small gardens, and their strong apical dominance combined with a dwarfing rootstock gives a compact narrow tree with very short fruiting side branches.
Sources: en.wikipedia.org
=== Audio === Todd played the title character in Bleak December Inc.'s 2016 audio drama adaptation of Bram Stoker's Dracula. Todd was the narrator of the spoken word version of Ice Nine Kills' album The Silver Scream, released on June 29, 2023.
where v = 1/ρ is the specific volume of the fluid element. One can think of ∇ ∙ u as a measure of flow compressibility. Sometimes the negative sign is included in the term. The term 1/ρ2∇ρ × ∇p is the baroclinic term. It accounts for the changes in the vorticity due to the intersection of density and pressure surfaces. The term ∇ × (∇ ∙ τ/ρ) accounts for the diffusion of vorticity due to the viscous effects. The term ∇ × B provides for changes due to external body forces. These are forces that are spread over a three-dimensional region of the fluid, such as gravity or electromagnetic forces. (As opposed to forces that act only over a surface (like drag on a wall) or a line (like surface tension around a meniscus).
=== Filesystems === Filesystem dump: A copy of the whole filesystem in block-level can be made. This is also known as a "raw partition backup" and is related to disk imaging. The process usually involves unmounting the filesystem and running a program like dd (Unix). Because the disk is read sequentially and with large buffers, this type of backup can be faster than reading every file normally, especially when the filesystem contains many small files, is highly fragmented, or is nearly full. But because this method also reads the free disk blocks that contain no useful data, this method can also be slower than conventional reading, especially when the filesystem is nearly empty. Some filesystems, such as XFS, provide a "dump" utility that reads the disk sequentially for high performance while skipping unused sections. The corresponding restore utility can selectively restore individual files or the entire volume at the operator's choice. Identification of changes: Some filesystems have an archive bit for each file that says it was recently changed. Some backup software looks at the date of the file and compares it with the last backup to determine whether the file was changed. Versioning file system: A versioning filesystem tracks all changes to a file. The NILFS versioning filesystem for Linux is an example.
==== Biological oxidation and carcinogenic activity ==== One way of understanding the carcinogenic effects of benzene is by examining the products of biological oxidation. Pure benzene, for example, oxidizes in the body to produce an epoxide, benzene oxide, which is not excreted readily and can interact with DNA to produce harmful mutations.
Sources: en.wikipedia.org
It is a synthetic 39-amino-acid peptide that acts on two incretin receptors, the GIP receptor and the GLP-1 receptor. It is given by subcutaneous injection and has a circulating half-life of roughly five days. It is not a small molecule and is not absorbed usefully from the gut in conventional oral form.
Selective agents act on one receptor, while tirzepatide engages both GIP and GLP-1 receptors. The added GIP activity may contribute effects on insulin sensitivity and on fat metabolism. Whether the dual action produces meaningful clinical advantages beyond differences in potency is still being examined.
The downstream consequences of GIP receptor activation are not fully characterised in humans. It is also unclear how much each receptor contributes to appetite reduction and to shifts in body composition. Published work describes associations and proposed pathways rather than settled causal chains.
It activates both GIP and GLP-1 receptors. This dual action differentiates it from selective GLP-1 agonists.