The short version of research chemical fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2025-10-28 and is reviewed periodically as new material appears.
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.
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.
The pharmacological interest in cardarine centers on PPARδ activation and its downstream effects on lipid handling and mitochondrial function. In animal studies, PPARδ agonists have been associated with changes in exercise endurance and fatty acid utilization, though results vary by model and protocol. Human data remain sparse, and the absence of large controlled trials limits conclusions about efficacy. Researchers often describe the compound as a tool for probing PPARδ biology rather than a proven therapeutic agent.
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.
| Property | Value | Notes |
|---|---|---|
| Solubility | Soluble in dimethyl sulfoxide and some organic solvents; practically insoluble in water | Solvent choice affects laboratory handling |
| Typical storage | -20 °C, desiccated, protected from light | Common condition for research samples |
| Analytical method | Liquid chromatography–tandem mass spectrometry (LC-MS/MS) | Used for identification and quantification in biological or product samples |
| Common synonyms | GW501516, GW-501516, GSK-516, Endurobol | Names found in research and anti-doping literature |
| Regulatory status | Unapproved therapeutic; prohibited in competitive sport | Status can vary by country and context |
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.
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.
That nationalist betrayal of socialism was denounced by a small group of socialist leaders who opposed the Great War, including Rosa Luxemburg, Karl Liebknecht and Lenin, who said that the European socialists had failed the working classes for preferring patriotic war to proletarian internationalism. To debunk patriotism and national chauvinism, Lenin explained in the essay Imperialism, the Highest Stage of Capitalism (1917) that capitalist economic expansion leads to colonial imperialism which is then regulated with nationalist wars such as the Great War among the empires of Europe. To relieve strategic pressures from the Western Front (4 August 1914 – 11 November 1918), Imperial Germany impelled the withdrawal of Imperial Russia from the war's Eastern Front (17 August 1914 – 3 March 1918) by sending Lenin and his Bolshevik cohort in a diplomatically sealed train, anticipating them partaking in revolutionary activity.
== Skeletal actin gene expression == Skeletal alpha actin expression is induced by stimuli and conditions known to cause muscle formation. Such conditions result in fusion of committed cells (satellite cells) into myotubes, to form muscle fibers. Skeletal actin itself, when expressed, causes expression of several other "myogenic genes", which are essential to muscle formation. One key transcription factor that activates skeletal actin gene expression is Serum Response Factor ("SRF"), a protein that binds to specific sites on the promoter DNA of the actin gene. SRF may bring a number of other proteins to the promoter of skeletal actin, such as androgen receptor, and thereby contribute to induction of skeletal actin gene expression by androgenic (often termed "anabolic") steroids.
=== Miscellaneous === The US Food and Drug Administration (FDA) advises that donation of blood or plasma be deferred for at least one month after taking the last dose of finasteride. The UK also has a one-month deferral period.
Sanders steadily polled between 15% and 20% on most national surveys between May and September 2019, according to the RealClearPolitics average. This placed him in a decisive second-place behind Joe Biden until Elizabeth Warren and Kamala Harris caught up in July. From mid-February 2020 to the start of March, Sanders polled in first place in the Democratic primary ahead of Joe Biden and was described by the press as the party's presidential front-runner. According to a RealClearPolitics analysis, Sanders received the third-most mentions on CNN, Fox News, and MSNBC between January and August 2019, trailing only Joe Biden and Kamala Harris. Biden, however, received twice as many mentions as Sanders and Harris. Mentions of Sanders on ABC World News Tonight found him in second place, though also trailing Biden by a large margin. Online mentions "reflect a slightly more balanced picture", with both Sanders and Elizabeth Warren running "neck-and-neck" with Biden.
Sources: en.wikipedia.org
District of Columbia – 90.28% Prince George's County, Maryland – 85.90% Petersburg, Virginia – 85.52% Baltimore, Maryland – 84.55% Oglala Lakota County, South Dakota – 83.83% Counties with highest percentage of Republican vote:
The traditional account exaggerates the importance of Fulton and Jacobsen to Moniz's decision to initiate frontal lobe surgery, and omits the fact that a detailed body of neurological research that emerged at this time suggested to Moniz and other neurologists and neurosurgeons that surgery on this part of the brain might yield significant personality changes in the mentally ill. The frontal lobes have been the object of scientific inquiry and speculation since the late 19th century. Fulton's contribution, while it may have functioned as a source of intellectual support, is in itself unnecessary and inadequate as an explanation of Moniz's resolution to operate on this section of the brain. Under an evolutionary and hierarchical model of brain development, it had been hypothesized that those regions associated with the more recent development, such as the mammalian brain and, most especially, the frontal lobes, were responsible for more complex cognitive functions. However, this theoretical formulation found little laboratory support, as 19th-century experimentation found no significant change in animal behaviour following surgical removal or electrical stimulation of the frontal lobes. This picture of the so-called "silent lobe" changed in the period after World War I with the production of clinical reports of ex-servicemen with brain trauma. The refinement of neurosurgical techniques also facilitated increasing attempts to remove brain tumours and treat focal epilepsy in humans, and led to more precise experimental neurosurgery in animal studies.
== Types of cells == Macrophages: Supported by a network of connective tissue. Understood as the Reticuloendothelial System, the RES allows microglial differential in the CNS, pulmonary alveolar macrophages, tissue histiocytes, Kupffler Hepatic macrophages, Glomerular Mesangial Proliferation and unnamed Splenic expression of wandering macrophages. Sharing of iron storage remains an essential mystery. Lymphocytes: These are cells responsible for immune responses that circulate in the blood. Normally, only small numbers are found in the CTs throughout the body. The number increases dramatically at certain sites of tissue inflammation. They are also very numerous in the lamina propria of the respiratory and gastrointestinal tracts, where they are involved in immunosurveillance. The lamina propria is a layer of loose CT lying immediately beneath the epithelium. Plasma cells: Plasma cells are derived from B-lymphocytes and produce antibodies against a specific antigen. They have a limited migratory ability and a short life. Neutrophils: Neutrophils are white blood cells that act as phagocytes in the early stages of acute inflammation. Eosinophils: Eosinophils are white blood cells that are found in the lamina propria of the GI tract, and at sites of allergic reaction and parasitic infection. Basophils: Basophils are white blood cells that are similar to mast cells in having vasoactive agents released in response to an allergen. Monocytes: Monocytes are white blood cells that will give rise to all the phagocytes of the mononuclear phagocytic system (see Ross et al., pg.
Sources: en.wikipedia.org
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.
No. It is not an anabolic-androgenic steroid; it is a synthetic PPARδ agonist. Because it is banned in sport, it is sometimes grouped with doping agents even though its chemical class differs from steroids.
Human data are limited and development was discontinued, so major effects and long-term risks are not well characterized. Some early studies examined metabolic markers, but they do not provide a basis for unsupervised use.
Cardarine is an investigational synthetic compound that acts as a PPARδ agonist. It is also known as GW501516 and has been studied mainly in preclinical research. It is not an approved medicine.