If you have been reading about PPARδ and want a single page that covers the useful parts, this is it: definitions, context, how it is studied, and the questions that come up repeatedly.
Last reviewed on 2026-04-14. Where a claim depends on a specific study, the study is described rather than over-claimed.
Laboratory handling focuses on identity, purity, and stability. Reference standards are typically stored cold and dry, protected from light, because solutions can degrade over time. Analytical checks may use high-performance liquid chromatography with ultraviolet detection or mass spectrometry. Impurities and related substances can be separated chromatographically and compared with a known standard. Because cardarine is not an approved drug, compendial monographs are absent, and laboratories often rely on in-house methods. Reported purity varies among unregulated products and should not be assumed from a label.
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.
Laboratory studies have examined GW501516 in cell cultures and rodents for conditions such as dyslipidemia, insulin resistance, and obesity. Some trials in humans were initiated, but development was discontinued after preclinical findings raised concerns about cancer in certain models. Those findings do not prove that the compound causes cancer in people, but they contributed to regulatory caution. Later reviews often describe the evidence as preliminary and insufficient for assessing long-term safety.
In the fitness and bodybuilding literature, cardarine is frequently discussed as an endurance agent or fat-loss compound, although such claims are not supported by robust clinical evidence. Online descriptions often mix animal data, user anecdotes, and marketing language. Researchers who study PPARδ agonists distinguish between receptor activation in controlled experiments and unsupervised use of unverified products. The latter introduces unknown purity, dose, and interactions, making reported experiences difficult to interpret scientifically.
GW501516 acts as an agonist at peroxisome proliferator-activated receptor delta, a nuclear receptor involved in transcription of genes related to lipid handling and energy use. Activation of PPARδ can shift skeletal muscle toward greater fatty acid oxidation in animal models, which is one reason it drew interest for metabolic disease and exercise research. The exact downstream effects depend on tissue, species, dose, and duration. Human data are sparse, so many proposed benefits remain hypotheses rather than established clinical outcomes.
| Property | Value | Notes |
|---|---|---|
| Appearance | White to off-white solid | Typical form of reference material |
| Solubility | Low in water; soluble in DMSO | Used to prepare stock solutions |
| Typical storage | -20 °C, desiccated, protected from light | Common laboratory practice |
| Analytical method | LC-MS/MS | Detects parent compound and metabolites |
| Common test matrix | Urine or blood | Used in anti-doping analysis |
Safety discussions about cardarine frequently cite rodent carcinogenicity findings reported in the 2000s. In those studies, treated animals developed tumors at multiple sites, leading sponsors to discontinue clinical development. The relevance of these findings to humans has not been resolved, but they are a major reason the compound is not approved. Current literature emphasizes uncertainty about long-term effects and the risks of unregulated use. Regulators and health agencies have not established a safe human exposure level.
Cardarine is a synthetic compound also known as GW501516, GW-501516, and sometimes endurobol. It was developed as a selective agonist of peroxisome proliferator-activated receptor delta, a nuclear receptor involved in fatty acid oxidation and energy metabolism. The compound was studied in preclinical models for metabolic and cardiovascular conditions, but it did not become a marketed human medicine. In regulatory and anti-doping contexts, it is treated as a prohibited substance rather than a licensed medicine.
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.
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.
=== Antifouling material for industry === Some algicidal bacterial species produce bioactive compounds that have potential applications in antifouling coatings for ship hulls and aquaculture facilities. These compounds can inhibit the growth and attachment of algae and other microorganisms on submerged surfaces, reducing biofouling. They are still under investigation and can potentially be an environmentally friendly alternative to the traditional chemical anti-fouling paints.
==== French Polynesia ==== In French Polynesia, glass noodles are known as vermicelle de soja and were introduced to the islands by Hakka agricultural workers during the 19th century. They are most often used in maʻa tinito, a dish made with glass noodles mixed together with pork, beans, and cooked vegetables.
The word Pseudomonas means "false unit", from the Greek pseudēs (Greek: ψευδής, false) and (Latin: monas, from Greek: μονάς, a single unit). The stem word mon was used early in the history of microbiology to refer to microorganisms and germs, e.g., kingdom Monera. The species name aeruginosa is a Latin adjective form derived from the noun aerūgō meaning verdigris ("copper rust"), here applied in reference to the blue-green (verdigris-like) colour seen in laboratory cultures of the species. This blue-green pigment is a combination of two secondary metabolites of P. aeruginosa, pyocyanin (blue) and pyoverdine (green), which impart the blue-green characteristic color of cultures.
siRNAs have been chemically modified to enhance their therapeutic properties. Short interfering RNA (siRNA) must be delivered to the site of action in the cells of target tissues in order for RNAi to fulfill its therapeutic promise. A detailed database of all such chemical modifications is manually curated as siRNAmod in scientific literature. Chemical modification of siRNA can also inadvertently result in loss of single-nucleotide specificity.
Sources: en.wikipedia.org
== Disease cycle == P. expansum infects a fruit via wounds through which the conidia are able to enter. Usually, puncturing, bruising, and limb rubs occur during harvesting, packaging, and processing of the fruit, all of which provide sites through which spores can enter the fruit. Conidia can be found in soil, decaying debris, and tree bark, and can survive cold temperatures. Conidia may be isolated from the air of the orchard and packaging house, on the walls of the packaging houses, and from the water and fungicide solution into which harvested fruits are dunked before packaging or storage. Exposure to conidia at any step of growth, harvesting, processing, shipping, and storage can lead to inoculation and disease. Conidia that have gained access via a wound can germinate to form a germ tube. This germ tube will continue to grow as hyphae, which colonize the fruit, killing fruit cells in an expanding infection. If the fungus has colonized the fruit with mycelium, the formation of conidiophores occurs on the surface or subsurface of the hyphae. The conidiophores are mostly smooth-walled terverticillate penicilli. A terverticillate pencilii has multiple branch points below the phialides, the cells that the conidia are attached to. However, at times, the penicilli may be rough or biverticillate (only two levels of branching). The phialides are packed close together with nearly a cylindrical shape. The conidia are dry, smooth, elliptical, and "dull-green" in color and are often disseminated by wind currents. Sexual reproduction has not been observed in nature for P. expansum.
=== Muscle Media 2000 ("MM2K") === In 1992, Phillips moved out of his mother's home and changed the publication's format and name to Muscle Media 2000 (usually referred to as "MM2K"). The magazine published frank discussion of the underground aspects of bodybuilding such as the use of and how to smuggle steroids, and columns by writers such as The Steroid Guru Dan Duchaine, Editor-in-Chief TC Luoma, Charles Poliquin, Mike Mooney, Nutritionist Keith Klein CN CCN, and Michael Dullnig M.D. aka "Dr. X." Muscle Media 2000 debuted in March 1992 and featured bodybuilder Lee Labrada on the cover.
1993/3156) European Communities (Definition of Treaties) (European Investment Fund) Order 1993 (S.I. 1993/3157) Drug Trafficking Offences Act 1986 (Designated Countries and Territories) (Amendment) (No. 2) Order 1993 (S.I. 1993/3158) Environment and Safety Information (Northern Ireland) Order 1993 (S.I. 1993/3159) Roads (Northern Ireland) Order 1993 (S.I. 1993/3160) Merchant Shipping (Fire Protection) (Non-United Kingdom) (Non-SOLAS Ships) (Amendment) Rules 1993 (S.I. 1993/3161) Merchant Shipping (Fire Appliances) (Amendment) Regulations 1993 (S.I. 1993/3162) Merchant Shipping (Fire Protection) (Amendment) Regulations 1993 (S.I. 1993/3163) Merchant Shipping (Fire Protection) (Ships Built Before 25 May 1980) (Amendment) Regulations 1993 (S.I. 1993/3164) Water and Sewerage Services (Amendment) (Northern Ireland) Order 1993 (S.I. 1993/3165) Ministerial and other Salaries Order 1993 (S.I. 1993/3166) Redundancy Payments (National Health Service) (Modification) Order 1993 (S.I. 1993/3167) Finance Act 1985 (Interest on Tax) (Prescribed Rate) (No. 2) Order 1993 (S.I. 1993/3168) Local Government Act 1992 (Commencement No. 3) Order 1993 (S.I. 1993/3169) Town and Country Planning (Fees for Applications and Deemed Applications) (Amendment) Regulations 1993 (S.I. 1993/3170) Taxes (Interest Rate) (Amendment No. 4) Regulations 1993 (S.I. 1993/3171) National Health Service (General Dental Services) Amendment (No. 2) Regulations 1993 (S.I. 1993/3172) Commercial Agents (Council Directive) (Amendment) Regulations 1993 (S.I.
==== Measles prevention ==== "Vitamin A deficiency (VAD) is a major public health problem in low- and middle-income countries, affecting 190 million children under five years of age and leading to many adverse health consequences, including death." Vitamin A deficiency is rare in the United States. A meta-analysis of clinical trials conducted in countries where VAD is prevalent concluded that when children were supplemented with vitamin A, there was a 50% reduction in incidence of contracting measles. Vitamin A supplementation is not thought to reduce the risk of death from measles. Young children given high doses of vitamin A from supplements or cod liver oil can accumulate to toxic levels and this can lead to hypervitaminosis A and liver damage. In the 2025 Southwest United States measles outbreak, centered in West Texas, some families continued to refuse vaccines and instead opted for giving vitamin A supplements or vitamins A- and D-containing cod liver oil to their children after Robert F. Kennedy Jr., promoted vitamin A as prevention and treatment. Multiple children hospitalized for measles at Covenant Children's Hospital in Lubbock also showed signs of liver damage, a symptom of vitamin A toxicity.
Austria signed the Treaty of Pressburg (26 December 1805) and left the coalition. The treaty required the Austrians to give up Venetia to the French-dominated Kingdom of Italy and the Tyrol to Bavaria. With the withdrawal of Austria from the war, stalemate ensued. Napoleon's army had a record of continuous unbroken victories on land, but the full force of the Russian army had not yet come into play. Napoleon had now consolidated his hold on France, had taken control of Belgium, the Netherlands, Switzerland, and most of Western Germany and northern Italy. His admirers say that Napoleon wanted to stop now, but was forced to continue in order to gain greater security from the countries that refused to accept his conquests. Esdaile rejects that explanation and instead says that it was a good time to stop expansion, for the major powers were ready to accept Napoleon as he was:
Sources: en.wikipedia.org
=== Yolk sac vasculogenesis === Expressed in high levels in the extraembryonic membranes throughout development, HAND1 also plays a functional role in vascular development of the yolk sac. Though not strictly required for vasculogenesis, data has shown that HAND1 contributes to the fine-tuning of the vasculogenic response in the yolk sac, recruiting smooth muscle cells to the endothelial network in order to refine the primitive endothelial plexus to a functional vascular system. This relationship has been demonstrated in the HAND1-null mouse model, where embryos lacking the HAND1 gene had a yolk sac vasculature defect caused by lack of vasculature refinement leading to the accumulation of hematopoietic cells between the yolk sac and the amnion.
Modern drug discovery is thus usually a capital-intensive process that involves large investments by pharmaceutical industry corporations as well as national governments (who provide grants and loan guarantees). Despite advances in technology and understanding of biological systems, drug discovery is still a lengthy, "expensive, difficult, and inefficient process" with low rate of new therapeutic discovery. In 2010, the research and development cost of each new molecular entity was about US$1.8 billion. In the 21st century, basic discovery research is funded primarily by governments and by philanthropic organizations, while late-stage development is funded primarily by pharmaceutical companies or venture capitalists. To be allowed to come to market, drugs must undergo several successful phases of clinical trials, and pass through a new drug approval process, called the New Drug Application in the United States. Discovering drugs that may be a commercial success, or a public health success, involves a complex interaction between investors, industry, academia, patent laws, regulatory exclusivity, marketing, and the need to balance secrecy with communication. Meanwhile, for disorders whose rarity means that no large commercial success or public health effect can be expected, the orphan drug funding process ensures that people who experience those disorders can have some hope of pharmacotherapeutic advances.
which shows that a condition for any charged particle to remain confined in a Penning trap is for the magnetic field to be sufficiently strong, while also having a nonzero voltage differential so that axial confinement is possible.
Keep-it Technologies AS (formerly TimeTemp) is a spin-off technology company from The Norwegian University of Life Sciences (NMBU) in Ås, just outside Oslo in Norway. Keep-it Technologies has offices and manufacturing facilities at Furuset in Oslo. The company is primarily engaged in research and technology development of a shelf-life indicator for temperature-sensitive products, such as food, pharmaceuticals and chemicals. The company's research efforts have received financial support from the Research Council of Norway’s Food Programme, as well as from Innovation Norway’s industrial R&D scheme (IFU).
Sources: en.wikipedia.org
Anti-doping and clinical laboratories commonly use liquid chromatography-tandem mass spectrometry. The method can identify GW501516 and its metabolites in urine or blood. Detection depends on sample timing and the amount present.
PPARδ is a nuclear receptor that regulates genes linked to fatty acid oxidation and energy metabolism. Activation can alter lipid handling and energy use in experimental models. The full range of effects in humans is still under study.
The solid compound is generally stable when kept cold, dry, and protected from light. Solutions may degrade faster, so laboratory protocols often specify fresh preparation or cold storage. Stability can depend on solvent, concentration, and container.
It binds and activates PPARδ, a nuclear receptor that influences gene expression related to fatty acid metabolism and energy balance. This mechanism has been studied mainly in animals and cell models, not established as a safe human therapy.