A practical reference on fatty acid oxidation: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
This page was last updated on 2026-05-23 and is reviewed periodically as new material appears.
PPARδ is a nuclear receptor that regulates gene expression related to fatty acid oxidation, glucose homeostasis, and mitochondrial function. GW501516 binds to this receptor with high affinity and activates downstream signaling in skeletal muscle and other tissues. Animal studies reported increased endurance and altered fuel preference, but human data remain limited and inconsistent. The precise relationship between receptor activation and observed physiological changes is still an area of active investigation. Researchers have also examined whether the compound affects inflammation or cell proliferation. No approved therapeutic indication exists for cardarine.
In laboratory settings, cardarine is studied as a tool compound for probing PPARδ biology. Published experiments often use cell cultures, rodent models, or isolated tissues. Some investigations focus on metabolic effects, while others assess potential risks such as carcinogenicity observed in long-term animal studies. Because human trials are sparse, most knowledge comes from preclinical work and adverse event reports. Scientific literature frequently notes the gap between animal findings and human outcomes. The compound is not a dietary supplement and is not intended for human consumption.
Cardarine is a common name for GW501516, a synthetic compound developed in the 1990s through research collaborations involving GlaxoSmithKline. It belongs to a class of molecules known as peroxisome proliferator-activated receptor delta agonists. Early studies explored its effects on lipid metabolism and energy expenditure in animal models. The compound was never approved as a human medicine, and clinical development was discontinued. In the years since, it has appeared in fitness and bodybuilding communities as a performance-enhancing substance. Regulatory agencies classify it as an unapproved drug.
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.
| Property | Value | Notes |
|---|---|---|
| CAS Registry Number | 317318-70-0 | Unique identifier for the compound. |
| Chemical class | PPARδ agonist | Synthetic ligand for peroxisome proliferator-activated receptor delta. |
| Appearance | White to off-white solid | Typical form of research-grade material. |
| Solubility | Soluble in DMSO and ethanol | Poorly soluble in water. |
| Typical storage | -20°C | Recommended for long-term storage of stock solutions. |
Cardarine is a common name for GW501516, a synthetic compound first described in the 1990s as a selective agonist of the peroxisome proliferator-activated receptor delta. It was studied in preclinical models for metabolic and cardiovascular conditions, but it has not been approved as a medicine in the United States, Europe, or other major jurisdictions. Retail products labeled as cardarine are generally research chemicals or supplements, not pharmaceutical formulations. Because human safety and efficacy data remain limited, regulatory agencies treat it as an unapproved substance rather than a therapeutic product.
Sporting authorities added GW501516 to prohibited lists after it appeared in athlete samples and online markets. The World Anti-Doping Agency classifies it as a hormone and metabolic modulator, and its use can lead to an anti-doping rule violation. Some early laboratory work suggested effects on fatty acid oxidation and endurance-related metabolism in animals, but those findings do not establish safe or effective use in people. Reports of adverse events in humans are scarce and often anecdotal, which complicates risk assessment.
Legal status varies by country. In some places, cardarine is controlled under medicines or psychoactive substances laws; in others, it may be sold with minimal oversight as a research chemical. Customs agencies have intercepted shipments, and several national health agencies have issued warnings about products marketed for bodybuilding or performance enhancement. The lack of a standardized pharmaceutical supply means identity, purity, and contamination levels can differ widely between samples. These factors make cardarine a regulatory and public health concern rather than a conventional prescription drug.
GW501516 acts as a selective agonist at PPARδ, a nuclear receptor that regulates transcription of genes involved in lipid handling and energy metabolism. Activation of PPARδ in preclinical models increases fatty acid oxidation, mitochondrial biogenesis, and exercise endurance in rodents. These effects have made the compound a subject of metabolic research and also a target for sport anti-doping rules. In humans, however, controlled studies are limited, and whether similar endurance or metabolic changes occur at tolerated exposures remains an open question. The receptor’s broad tissue distribution also means downstream effects may vary by organ and condition.
Detection of GW501516 in biological samples generally relies on liquid chromatography coupled with tandem mass spectrometry. Urine is a common matrix in anti-doping analysis, while blood or plasma may be used in research settings. Sample preparation can involve enzymatic hydrolysis, protein precipitation, or solid-phase extraction before instrumental analysis. Because the compound undergoes metabolism, assays may target the parent molecule, one or more metabolites, or both. Detection windows are not fixed; they depend on factors such as dose, route, individual metabolism, and assay sensitivity. Reference standards are required for accurate identification and quantification.
GW501516 binds and activates PPARδ, a nuclear receptor that influences transcription of genes involved in fatty acid oxidation and energy use. Activation shifts some metabolic pathways in preclinical models, which is why the compound has been studied for lipid disorders and exercise-related endpoints. The exact downstream effects in humans are incompletely mapped. PPARδ is expressed in many tissues, including skeletal muscle, liver, and adipose tissue, so broad activation may have varied consequences. Researchers continue to examine how selective or partial activation might alter the balance between benefits and risks.
Published human data are sparse and mostly come from early-phase trials. Those studies examined short-term changes in lipids, glucose, and exercise capacity, but they were not large enough to establish efficacy or long-term safety. Some animal experiments reported increased running endurance, yet such findings do not prove a performance benefit in people. Anti-doping laboratories detect GW501516 and its metabolites in urine or blood using liquid chromatography-tandem mass spectrometry. Detection windows depend on dose, sample type, and individual metabolism. The method is sensitive enough to identify trace residues in tested samples.
== In politics and government == Afghan National Police Agência Nacional do Petróleo, Gás Natural e Biocombustíveis or National Agency of Petroleum, Natural Gas and Biofuels (Brazil), a regulatory agency in Brazil American Nazi Party, an American neo-Nazi political party Arakan National Party, political party in Myanmar Assembleia Nacional Popular, the legislature in Guinea-Bissau Awami National Party, a left-wing Pakistani political party
=== Endocrine === Insulin Resistance, hyperinsulinemia, type II Diabetes, hypertriglyceridemia - Sodium-glucose transport protein 2 inhibitors, metformin, sulfonylureas, DPP-4 inhibitors, short and long-acting insulin
=== Non-denaturing-condition electrophoresis === A non-denaturing electrophoretic procedure for isolating bioactive metalloproteins in complex protein mixtures is preparative native PAGE. The intactness or the structural integrity of the isolated protein must be confirmed by an independent method.
Sources: en.wikipedia.org
Fränzi Mägert-Kohli (born 1982), Swiss snowboarder. Kabir Kohli (born 2000), Indian footballer. Palak Kohli (born 2002), Indian professional Para-badminton player. Parth Kohli (born 1996), Indian cricketer. Nikhil Kohli (born 1996), Indian cricketer. Shah Kohli (born 1976), Indian Judo player. Shashwat Kohli (born 1997), Indian cricketer. Sushil Kohli (born 1953), Indian swimmer and water polo player, Asian Games bronze medalist. Taruwar Kohli (born 1988), Indian cricketer.
=== Studying cold traps on airless bodies === As these shadows receive no insolation, most of the heat they receive comes from scattered and emitted radiation from the surrounding topography. Usually, horizontal heat conduction from adjacent warmer areas can be neglected because of the high porosity and therefore low thermal conductivity of the uppermost layers of airless bodies. Consequently, the temperatures of these permanent shadows can be modeled using ray-casting or ray-tracing algorithms coupled with 1D vertical heat conduction models. In some cases, such as bowl-shaped craters, it is possible to obtain an expression for the equilibrium temperature of these shadows. Additionally, the temperatures (and therefore the stability) of cold traps can be remotely sensed by an orbiter. The temperatures of lunar cold traps have been extensively studied by the Lunar Reconnaissance Orbiter's Diviner radiometer. On Mercury, evidence for ice deposits inside cold traps has been obtained through radar, reflectance, and visible imagery. On Ceres, cold traps have been detected by the Dawn spacecraft.
1961 Discovery by Leonard Hayflick of the limit of divisions for somatic cells, named the Hayflick limit. Hayflick found that normal human cells, extracted from fetus, are able to divide only about 50 times, after that they enter a senescence phase. 1969 Immunological theory of aging proposed by Roy Walford. 1974 Formation of the National Institute on Aging (NIA) – the aging of the population began to be perceived as a problem deserving state attention (and not as a problem of separate scientific societies). Since 1984, the NIA has begun to contribute in every way to the work of the National Archive of Computerized Data on Aging (NACDA). 1977 To explain aging, Thomas Kirkwood proposed the disposable soma theory. According to the theory, the organism has only a limited amount of resources that it has to allocate between different purposes (such as growth, reproduction, repair of damage). Aging occurs due to the limitation of resources that the body can afford to spend on repair. 1985 The discovery of telomerase, a ribonucleoprotein that is able to restore shortened telomeres. The discovery was made by Elizabeth Blackburn and Carol Greider. This research is based on the theoretical works of Alexey Olovnikov. The study of telomeres and telomerase required many more years and the work of many scientists around the world. For this work, in 2009, Elizabeth Blackburn, Carol Greider and Jack Szostak received the Nobel prize, in the same year Alexey Olovnikov was awarded the Demidov Prize.
Sources: en.wikipedia.org
Half-Life is a 2008 American science fiction drama film directed by Jennifer Phang, starring Sanoe Lake, Julia Nickson-Soul, Leonardo Nam, Ben Redgrave, Lee Marks, James Eckhouse, Susan Ruttan and Alexander Agate. The film premiered in the 2008 Sundance Film Festival and subsequently toured the American and international film festivals circuits. It premiered internationally in the Tokyo International Film Festival in competition, and then in Europe at the Mannheim-Heidelberg International Film Festival, also in competition. Half-Life was the opening night film for the International Women's Film Festival in Seoul, Korea. The film made a theatrical debut on December 1, 2009 in selected cities.
Feminizing hormone therapy is typically used by transgender women, who desire the development of feminine secondary sex characteristics. Individuals who identify as non-binary may also opt-in for feminizing hormone treatment to better align their body with their desired gender expression. Feminizing hormone therapy usually includes medication to suppress testosterone production and induce feminization. Types of medications include estrogens, antiandrogens (testosterone blockers), and progestogens. Most commonly, an estrogen is combined with an antiandrogen to suppress and block testosterone. This allows for demasculinization and promotion of feminization and breast development. Estrogens are administered in various modalities including injection, transdermal patch, and oral tablets. The desired effects of feminizing hormone therapy focus on the development of feminine secondary sex characteristics. These desired effects include: breast tissue development, redistribution of body fat, decreased body hair, reduction of muscle mass, and more. The table below summarizes some of the effects of feminizing hormone therapy in transgender women:
=== Bibliography === Cowsill, Alan (2021). The Way of the Warrior: Marvel's Mightiest Martial Artists. DK. ISBN 978-0-7440-2719-8. Deman, J. Andrew (2023). The Claremont Run: Subverting Gender in the X-Men. University of Texas Press. ISBN 978-1-4773-3075-3.
Sources: en.wikipedia.org
Cardarine is a common name for GW501516, a synthetic PPARδ agonist developed for research. It has not been approved as a medication in any country. It is classified as an unapproved drug and a prohibited substance in sport.
No. Cardarine is not an anabolic steroid; it belongs to a different chemical class that targets PPARδ. Steroids act primarily through androgen receptors, while cardarine acts through a nuclear receptor involved in metabolism.
Some rodent studies reported increased endurance and changes in fat metabolism after cardarine exposure. Long-term studies in animals also raised concerns about cancer in certain tissues. Human trial data are limited, so these findings cannot be directly translated to people.
It binds to and activates PPAR delta, a nuclear receptor that controls expression of genes related to fatty acid oxidation. This mechanism can alter energy metabolism in animal models. It is not a direct stimulant or fat-burning enzyme.