The short version of PPARδ agonist fits in a sentence. The long version — which is the one that helps — is below.
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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, 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.
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.
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.
| Property | Value | Notes |
|---|---|---|
| Common synonyms | GW501516; GW-1516; endurobol | GW501516 is the research code |
| Drug class | PPARδ agonist | Not a selective androgen receptor modulator |
| Molecular formula | C21H18F3NO3S2 | Established chemical formula |
| Molar mass | 453.5 g/mol | Calculated from the formula |
| Regulatory status | Prohibited in sport; not approved as medicine | Status varies by country |
Published literature on cardarine includes in vitro assays, rodent experiments, and a small number of human studies. Reports describe effects on exercise capacity and lipid metabolism in animals, while human evidence is sparse. Many online descriptions present the compound as a proven endurance aid, a claim not supported by regulatory approval or large clinical trials. Analytical studies focus on identifying the parent compound and its metabolites in biological samples. Important uncertainties include species differences, dose-response relationships, and the relevance of rodent tumor findings to humans.
Cardarine is the common name for GW501516, a synthetic compound studied as a peroxisome proliferator-activated receptor delta agonist. Researchers developed it to explore treatments for lipid disorders and metabolic conditions. It is not an approved medicine in any country. Early clinical work examined changes in HDL cholesterol and triglycerides, but development was discontinued after animal studies raised concerns about cancer. The compound remains available as a research chemical and appears in discussions of performance enhancement.
At the molecular level, GW501516 binds and activates PPARδ, a nuclear receptor that regulates transcription. Activation shifts expression of genes involved in fatty acid oxidation, energy expenditure, and lipid transport in skeletal muscle and liver. Animal studies report increased endurance and altered lipid profiles after exposure. Human data are limited to small trials and do not establish long-term safety or efficacy. PPARδ also has roles in cell proliferation, so the relationship between activation and cancer risk remains an open question.
Published studies have examined GW501516 in animal models of obesity, insulin resistance, and exercise endurance. Early human trials reportedly ended, and development was discontinued after preclinical findings raised concerns about cancer in some rodent studies. Regulatory agencies have not approved cardarine for any medical use. Its availability through non-pharmaceutical channels raises questions about identity, purity, and legal status that are separate from its laboratory pharmacology. Those questions are often addressed through analytical testing rather than assumptions about product labels.
Cardarine is a common name for GW501516, also GW-1516, a synthetic compound developed as a peroxisome proliferator-activated receptor delta (PPARδ) agonist. It belongs to a class of agents that modulate gene transcription related to lipid and energy metabolism. The compound was studied in preclinical and early clinical research for metabolic and cardiovascular conditions, but it did not progress to approved therapeutic use. Its name appears in fitness and sports contexts despite not being approved as a drug.
PPARδ is a nuclear receptor that influences transcription of genes involved in fatty acid oxidation, lipid transport, and energy homeostasis. GW501516 binds and activates this receptor with high selectivity relative to PPARα and PPARγ in laboratory assays. Activation alters expression of target genes in skeletal muscle, liver, and adipose tissue in animal models. The exact clinical consequences of these changes in humans remain incompletely characterized, and observed effects in animals do not establish therapeutic benefit or safety.
Primary familial brain calcification (PFBC), also known as familial idiopathic basal ganglia calcification (FIBGC) and Fahr's disease, is a rare, genetically dominant or recessive, inherited neurological disorder characterized by abnormal deposits of calcium in areas of the brain that control movement. Through the use of CT scans, calcifications are seen primarily in the basal ganglia and in other areas such as the cerebral cortex.
=== Restaurants === Stands and trucks sell boiled hot dogs at street and highway locations. Wandering hot dog vendors sell their product in baseball parks. At convenience stores, hot dogs are kept heated on rotating grills. Hot dogs are also common on restaurants' children's menus. Costco, a big-box retail chain, sells a yearly average of 135 million hot dogs at its food courts, at a notably low price. Fast-food restaurant chains typically do not carry hot dogs because of its shorter shelf-life, more complex toppings and cooking, and mismatched consumer expectations. There are also restaurants where hot dogs are a specialty.
All the alkali metals are highly reactive and are never found in elemental forms in nature. Because of this, they are usually stored in mineral oil or kerosene (paraffin oil). They react aggressively with the halogens to form the alkali metal halides, which are white ionic crystalline compounds that are all soluble in water except lithium fluoride (LiF). The alkali metals also react with water to form strongly alkaline hydroxides and thus should be handled with great care. The heavier alkali metals react more vigorously than the lighter ones; for example, when dropped into water, caesium produces a larger explosion than potassium if the same number of moles of each metal is used. The alkali metals have the lowest first ionisation energies in their respective periods of the periodic table because of their low effective nuclear charge and the ability to attain a noble gas configuration by losing just one electron. Not only do the alkali metals react with water, but also with proton donors like alcohols and phenols, gaseous ammonia, and alkynes, the last demonstrating the phenomenal degree of their reactivity. Their great power as reducing agents makes them very useful in liberating other metals from their oxides or halides. The second ionisation energy of all of the alkali metals is very high as it is in a full shell that is also closer to the nucleus; thus, they almost always lose a single electron, forming cations.
=== On bone formation === Due to myostatin's ability to inhibit muscle growth, it can indirectly inhibit bone formation by decreasing the load on the bone. It has a direct signalling effect on bone formation as well as degradation. Knockdown of myostatin has been shown to reduce formation of osteoclasts (multinucleated cells responsible for the breakdown of bone tissue) in mice modeling rheumatoid arthritis. Rheumatoid arthritis is an autoimmune disorder that, among other effects, leads to the degradation of the bone tissue in affected joints. Myostatin has not, however, been shown to be solely sufficient for the formation of mature osteoclasts from macrophages, only an enhancer. Myostatin expression is increased around the site of a fracture. Suppression of myostatin at the fracture site leads to increased callus and overall bone size, further supporting the inhibitory effect of myostatin on bone formation. One study by Berno Dankbar et al., 2015 found that myostatin deficiency leads to a notable reduction in inflammation around a fracture site. Myostatin affects osteoclastogenesis by binding to receptors on osteoclastic macrophages and causing a signalling cascade. The downstream signalling cascade enhances the expression of RANKL-dependent integrin αvβ3, DC-STAMP, calcitonin receptors, and NFATc1 (which is part of the initial intracellular complex that starts the signaling cascade, along with R-Smad2 and ALK4 or ALK5).
== Further reading == Tirelli, F.; Giraudo, C.; Soliani, M.; Calabrese, F.; Martini, G.; Gisondi, P.; Meneghel, A.; Zulian, Francesco (2023-10-17). "Connective tissue nevus misdiagnosed as juvenile localized scleroderma". Pediatric Rheumatology. 21 (1) 125. Springer Science and Business Media LLC. doi:10.1186/s12969-023-00913-9. ISSN 1546-0096. PMC 10583392. PMID 37848914. Pierard, Gerald E.; Lapiere, Charles M. (1985). "Nevi of connective tissue A reappraisal of their classification". The American Journal of Dermatopathology. 7 (4). Ovid Technologies (Wolters Kluwer Health): 325–334. doi:10.1097/00000372-198508000-00003. ISSN 0193-1091. PMID 3842789.
Sources: en.wikipedia.org
CB2 receptors are predominantly found in the immune system or immune-derived cells, with varying expression patterns. A subpopulation of microglia in the human cerebellum expresses CB2. CB2 receptors are linked to immunomodulatory effects and potential therapeutic benefits in animal models.
=== Multicolour Labelling === Since EosFP can be used in fusion constructs while maintaining functionality of the protein of interest, it is a popular choice for multi-colour labelling studies. In a dual-colour labelling experiment to map the stages of mitosis, HEK293 cells were first stably transfected with tubulin-binding protein cDNA fused to EGFP for visualization of the spindle apparatus. Then, transient transfection of recombination signal-binding protein (RBP) fused to d2EosFP was used to visualize the beginning of mitosis. Photoconversion was completed by fluorescent microscopy and highlighted the separation between two sets of chromosomes during anaphase, telophase and cytokinesis.
=== Papillitis/hypertrophy === Papillitis refers to inflammation of the papillae, and sometimes the term hypertrophy is used interchangeably. In foliate papillitis the foliate papillae appear swollen. This may occur due to mechanical irritation, or as a reaction to an upper respiratory tract infection. Other sources state that foliate papilitis refers to inflammation of the lingual tonsil, which is lymphoid tissue.
Some scientists say loxapine is a "mid-potency" typical antipsychotic. However, unlike most other typical antipsychotics, it has significant potency at the 5-HT2A receptor (6.6 nM), which is similar to atypical antipsychotics like clozapine (5.35 nM). The higher likelihood of EPS with loxapine, compared to clozapine, may be due to its higher affinity for the dopamine D2 receptor (11 nM) compared to clozapine, which has one of the lowest binding affinities at the D2 receptor of any antipsychotic. Nevertheless, its higher affinity for 5-HT2A receptors over any of the dopamine receptors (54 nM for D1, 11 nM for D2, 19 nM for D3, 8.4 nM for D4 and 75 nM) makes it belong to atypical antipsychotic. On top of being an atypical antipsychotic, Amoxapine, one of the major metabolites of Loxapine, is a tricyclic antidepressant on its own right (though sometimes classified as tetracyclic antidepressant). It acts as Serotonin–norepinephrine reuptake inhibitor, and acts as moderate and strong reuptake inhibitor for Serotonin and Norepinephrine respectively. It also share with Loxapine an high affinity for 5-HT2 receptors, (0.5 nM, and 2.0 nM for 5-HT2A and 5-HT2C receptors respectively), while having lower affinity for D2 receptors (3.6 nm), retaining Loxapine's atypical antipsychotic properties. It has also significant binding affinity for 5-HT6 and 5-HT7 receptors, and Alpha-1 adrenergic receptor.
Pan-Slavism in the south, largely advocated by Serbs, would often turn to Russia for support. The Southern Slavic movement advocated the independence of the Slavic peoples in the Austro-Hungarian Empire, Republic of Venice and the Ottoman Empire. Most Serbian intellectuals sought to unite all of the Southern, Balkan Slavs, whether Catholic (Croats, Slovenes), Muslim (Bosniaks, Pomaks), or Orthodox (Montenegrins, Serbs, Macedonians, Bulgarians) as a "Southern-Slavic nation of three faiths". Austria feared that Pan-Slavists would endanger the empire. In Austria-Hungary Southern Slavs were distributed among several entities: Slovenes in the Austrian part (Carniola, Styria, Carinthia, Gorizia and Gradisca, Trieste, Istria), Croats and Serbs in the Hungarian part within the autonomous Kingdom of Croatia-Slavonia and in the Austrian part within the autonomous Kingdom of Dalmatia, and in Bosnia and Herzegovina, under direct control from Vienna. Owing to a different position within Austria-Hungary, several different goals were prominent among the Southern Slavs of Austria-Hungary. A strong alternative to Pan-Slavism was Austroslavism, especially among the Croats and Slovenes. Because the Serbs were dispersed among several regions, and the fact that they had ties to the independent nation state of Kingdom of Serbia, they were among the strongest supporters of independence of South-Slavs from Austria-Hungary and uniting into a common state under Serbian monarchy.
Sources: en.wikipedia.org
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.
No. It has no approved medical indication in any country. Regulatory agencies have not cleared it for treatment or prevention of any condition.
Early clinical work stopped after rodent carcinogenicity findings. Those animal results raised concerns about long-term human risk, although direct human evidence is lacking. The human relevance of the tumors remains an open scientific question.
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.