PPARδ agonist comes up often in conversation and rarely with the context attached. Here we lay out the basics in order, then work through the practical considerations.
Last reviewed on 2026-05-02. Where a claim depends on a specific study, the study is described rather than over-claimed.
Anti-doping laboratories identify GW501516 and related metabolites using liquid chromatography coupled with tandem mass spectrometry. Urine is the most common matrix, though blood and dried blood spots may also be analyzed. The method targets the parent compound and phase I and phase II metabolites, which extend the detection window. Because the substance is prohibited at all times, athletes can be tested outside competition. Detection limits and windows depend on the assay, sample type, and individual metabolism.
Cardarine is frequently described as a fat-burning or endurance-enhancing supplement, but these claims exceed the available evidence. The compound is not a hormone, steroid, or selective androgen receptor modulator. Research articles discuss it as a tool compound for studying PPARδ biology, while anti-doping literature focuses on its abuse and detection. Quality of unapproved products is uncertain, and independent analyses have found impurities or incorrect labeling. Open questions include whether human cancer risk resembles that seen in rodents and how often non-athletes use the substance.
Cardarine is a common name for GW501516, an investigational compound developed in the 1990s for metabolic conditions. It acts as an agonist at peroxisome proliferator-activated receptor delta, a nuclear receptor involved in lipid and energy metabolism. The compound is frequently mislabeled as a selective androgen receptor modulator, or SARM, but its molecular target is different. GW501516 reached early clinical testing before development was discontinued. It has no approved therapeutic use in any country. The name cardarine is not a formal international nonproprietary name.
Regulatory treatment varies, but cardarine is not approved as a medicine. Sports authorities list GW501516 as a prohibited substance, and it is banned at all times under the World Anti-Doping Agency code. Many countries restrict sales for human consumption, while online vendors market it as a research chemical. Such products may lack purity data, and their actual contents can differ from the label. Purchasing or possessing cardarine may carry legal consequences depending on jurisdiction. The compound is not a dietary supplement ingredient in regulated markets.
Clinical development stopped after rodent studies showed tumors at multiple sites. Whether those findings predict human cancer risk remains an open question, but they led sponsors to discontinue programs. Human safety data are limited to small, short-term studies that were not designed to assess cancer risk. Reported effects in those studies included changes in blood lipids, but the evidence is insufficient for medical use. Long-term consequences of nonmedical use are not well characterized. Questions about dose, duration, and individual susceptibility remain unresolved.
| Property | Value | Notes |
|---|---|---|
| Regulatory status | Prohibited in sport; not approved as medicine | Listed by WADA at all times. |
| Common synonyms | GW501516, GW-501516, endurobol | Cardarine is a colloquial name. |
| Typical analytical method | LC-MS/MS | Detects parent compound and metabolites. |
| Common test matrix | Urine | Blood and dried blood spots also possible. |
| Legal classification | Varies by country | Often treated as unapproved drug or research chemical. |
GW501516 acts as a ligand for PPAR delta, a nuclear receptor that regulates transcription of genes involved in fatty acid oxidation and energy use. Activation of this receptor in skeletal muscle shifts metabolism toward fat burning in animal models. The compound does not burn fat directly; it changes gene expression over hours to days. Researchers study it to understand metabolic flexibility and exercise adaptation. Effects observed in rodents are not automatically expected in humans.
Preclinical research reported that GW501516 increased running endurance in mice and improved lipid profiles in some animal species. Early human trials explored effects on high-density lipoprotein cholesterol, triglycerides, and glucose handling, but the program was discontinued. Published human data are sparse and do not establish efficacy for any condition. Studies also examined PPAR delta in cancer biology, with conflicting findings across models. The relationship between receptor activation, tissue context, and disease risk remains an active area of investigation.
Anti-doping laboratories identify GW501516 and its metabolites using liquid chromatography-tandem mass spectrometry. Urine is the usual matrix, and detection can occur after the parent compound has cleared from blood. The exact detection window depends on dose, formulation, individual metabolism, and assay sensitivity. Because the compound is prohibited at all times, athletes are subject to testing in and out of competition. Analytical methods continue to improve as new metabolites and designer analogs are characterized.
Activation of PPARδ changes transcription of genes involved in fatty acid transport, mitochondrial function, and skeletal muscle fuel preference. In rodent studies, pharmacological PPARδ activation was associated with increased endurance and altered body composition. These findings generated interest in performance enhancement, but species differences and study designs limit direct extrapolation to humans. Small human trials were conducted in the 2000s and later discontinued. The extent to which cardarine produces similar metabolic or performance effects in people remains an open question.
The compound is typically described as a laboratory compound rather than a therapeutic product. Published reports have explored its role in lipid disorders, insulin sensitivity, and exercise metabolism, yet no major drug regulator has approved it for medical use. Commercial samples sold under the cardarine name may vary in purity and identity. Analytical confirmation is therefore necessary when the material is discussed in scientific or regulatory contexts. Its classification as a prohibited substance in sport further shapes how it is studied and reported.
1-hydroxy-2-naphthoate hydroxylase (EC 1.14.13.135, 1-hydroxy-2-naphthoic acid hydroxylase) is an enzyme with systematic name 1-hydroxy-2-naphthoate,NAD(P)H:oxygen oxidoreductase (2-hydroxylating, decarboxylating). This enzyme catalyses the following chemical reaction
Patients who have suffered aortic dissection are at risk of aortic aneurysm formation at the site of the dissection, thought to be due to weakening of the aortic wall. The risk of this aneurysm degeneration is 10 times higher in individuals who have uncontrolled hypertension, compared to individuals with a systolic pressure below 130 mmHg. Regarding long term mortality after aortic dissection, the risk of death is highest in the first two years after the acute event. About 29% of late deaths following surgery are due to rupture of either a dissecting aneurysm or another aneurysm. The rate of aortic aneurysm formation after dissection in the affected section of aorta is 25-40%. Other studies estimate a 17% to 25% incidence of new aneurysm formation, typically due to dilatation of the residual false lumen. These new aneurysms are more likely to rupture, due to their thinner walls. Serial imaging of the aorta is recommended after dissection to assess for progression of the dissection, durability of the repair, screen for aneurysm formation, and assess aortic remodeling. Repeat imaging of the aorta after type B dissections is recommended at 1, 6, 12 months after diagnosis and then yearly.
This all-or-nothing property of the action potential sets it apart from graded potentials such as receptor potentials, electrotonic potentials, subthreshold membrane potential oscillations, and synaptic potentials, which scale with the magnitude of the stimulus. A variety of action potential types exist in many cell types and cell compartments as determined by the types of voltage-gated channels, leak channels, channel distributions, ionic concentrations, membrane capacitance, temperature, and other factors. The principal ions involved in an action potential are sodium and potassium cations; sodium ions enter the cell, and potassium ions leave, restoring equilibrium. Relatively few ions need to cross the membrane for the membrane voltage to change drastically. The ions exchanged during an action potential, therefore, make a negligible change in the interior and exterior ionic concentrations. The few ions that do cross are pumped out again by the continuous action of the sodium–potassium pump, which, with other ion transporters, maintains the normal ratio of ion concentrations across the membrane. Calcium cations and chloride anions are involved in a few types of action potentials, such as the cardiac action potential and the action potential in the single-cell alga Acetabularia, respectively. Although action potentials are generated locally on patches of excitable membrane, the resulting currents can trigger action potentials on neighboring stretches of membrane, precipitating a domino-like propagation.
Sources: en.wikipedia.org
== History == Oveporexton was developed by Takeda. As of July 2025, it has completed phase III clinical trials for treatment of narcolepsy. Oveporexton was approved in China for narcolepsy type 1 in July 2026, its first global approval. Oveporexton was approved in the United States for narcolepsy type 1 in August 2026.
== Mechanism of action == Juvéderm works well for cosmetic and plastic surgery applications because hyaluronic acid can absorb up to 1,000 times its own weight in water, thereby adding new volume under the surface of sagging skin. Older faces take on more youthful aspects because hyaluronic acid is known to bind with collagen—the material that supports human facial skin—and elastin to move more basic nutrients into the skin. Juvederm hydrates the skin and increases the capacity of skin to hold water therefore skin holds more moisture and looks fresher than before.
== Ownership and finance == Marks and Hazan initially supported GYG with their own money. In 2009, they sold a minority stake to Peter Ritchie, Guy Russo and Steve Jermyn, who had previously been involved with McDonald's Australia. Russo was subsequently appointed chairman of the board. The board also includes co-founder Robert Hazan, Tom Cowan of TDM Growth Partners, Rokt CEO Bruce Buchanan, and three former McDonalds executives. Investment firm TDM Growth Partners bought a stake in the company for $44 million in August 2018. In December 2020, the publicly listed Magellan Financial Group bought 10% of the company for $86.8 million. In May 2022, Magellan sold its 11.6% stake in the company to an entity owned by investment bank Barrenjoey Capital Partners for $140 million. Marks stated in 2019 that his goal was to list GYG on the Australian Securities Exchange. In 2020, he stated that he was also ambitious to expand the company's presence in the United States, citing Australia's "antiquated" labour laws, high rents, and expensive fresh produce. Marks resigned as CEO due to a health scare in May 2023, but he changed his mind and remained. Hilton Brett was appointed co-CEO in October 2023. GYG was listed on the Australian Securities Exchange on 20 June 2024.
Sources: en.wikipedia.org
"National" organizations operating outside their original homelands. WOSM's conference admitted and recognised the exile Russian Scouts as the "Representatives of Russian Scouting in Foreign Countries" on 30 August 1922 and the Armenian Scouts in France were recognized as a "National Movement on Foreign Soil" on 30 April 1929. Small, non-voting associations. The International Boy Scouts of the Canal Zone, a group in Panama with Scouts that claimed British and not Panamanian nationality was originally placed under the Boy Scouts of America's Canal Zone Council but, in 1947, was transferred under WOSM's bureau. The group had over 900 members in 1957 and existed as a directly registered group until the late 60s. The Boy Scouts of the United Nations began in 1945 and for years there was an active Boy Scouts of the United Nations with several troops at Parkway Village in New York City but only 14 members in 1959. Both the International Boy Scouts of the Canal Zone and the Boy Scouts of United Nations have long since disbanded. Directly registered "mixed-nationality Troops" were registered after discussions concerning such troops took place at WOSM's 3rd conference in 1924 at which WOSM's bureau was authorized to directly register such groups. It seems that the discussion at WOSM's 1924 conference was, at least in part, prompted by a letter to Baden-Powell from the Scoutmaster of one such troop in Yokohama, Japan. Janning's troop became the first troop directly registered by WOSM's bureau.
In the 20th century, the safety and efficacy of general anesthetics were further improved with the routine use of tracheal intubation and advanced airway management techniques, monitoring, and new anesthetic agents with improved characteristics. Standardized training programs for anesthesiologists and nurse anesthetists emerged during this period. Moreover, the application of economic and business administration principles to healthcare in the late 20th and early 21st centuries led to the introduction of management practices, such as transfer pricing, to improve the efficiency of anesthetists.
=== Classification === The crosslinks which bond the polymers of a hydrogel fall under two general categories: physical hydrogels and chemical hydrogels. Chemical hydrogels have covalent cross-linking bonds, whereas physical hydrogels have non-covalent bonds. Chemical hydrogels can result in strong reversible or irreversible gels due to the covalent bonding. Chemical hydrogels that contain reversible covalent cross-linking bonds, such as hydrogels of thiomers being cross-linked via disulfide bonds, are non-toxic and are used in numerous medicinal products. Physical hydrogels usually have high biocompatibility, are not toxic, and are also easily reversible by simply changing an external stimulus such as pH, ion concentration (alginate) or temperature (gelatine); they are also used for medical applications. Physical crosslinks consist of hydrogen bonds, hydrophobic interactions, and chain entanglements (among others). A hydrogel generated through the use of physical crosslinks is sometimes called a 'reversible' hydrogel. Chemical crosslinks consist of covalent bonds between polymer strands. Hydrogels generated in this manner are sometimes called 'permanent' hydrogels. Hydrogels are prepared using a variety of polymeric materials, which can be divided broadly into two categories according to their origin: natural or synthetic polymers. Natural polymers for hydrogel preparation include hyaluronic acid, chitosan, heparin, alginate, gelatin and fibrin.
3-D Viewer of a male American mastodon skeleton, with bones labelled, at the University of Michigan Mammutidae digital fossil repository Interactive views of various primate skeletons at eSkeletons.org (associated with the University of Texas at Austin)
Sources: en.wikipedia.org
Legal status varies by country. It is not approved as a medicine, and it is prohibited in sport. Some jurisdictions restrict import, sale, or possession.
Laboratories use liquid chromatography-tandem mass spectrometry to detect GW501516 and its metabolites. Urine is commonly tested, and testing can occur in and out of competition.
No, cardarine is not a SARM. It is a PPARδ agonist, which acts on a different receptor. The two classes are often confused in online discussions.
No. Cardarine is GW501516, a PPARδ agonist, while SARMs act on androgen receptors. The two classes are often grouped in informal discussions despite different mechanisms.