Everything below concerns Metabolite. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2026-07-14. Numbers and descriptions here follow the published literature rather than marketing material.
Regulatory treatment of cardarine differs by context and jurisdiction. In competitive sport, the World Anti-Doping Agency lists PPARδ agonists, including GW501516, as prohibited at all times. Outside sport, it lacks approval as a prescription medicine in major drug markets, and products sold for human consumption may be treated as unapproved drugs. Some countries also restrict importation or sale through general consumer protection and medicines laws. These classifications affect availability, testing, and legal risk without establishing therapeutic value.
Because cardarine is not an approved medicine, no pharmacopeial monograph defines its identity, purity, or storage requirements. Laboratories typically rely on in-house methods and reference standards when testing materials labeled as GW501516. Certificates of analysis may report purity and identity for a specific batch, but their scope varies and they do not guarantee safety or legal status. Independent verification can include high-performance liquid chromatography, mass spectrometry, nuclear magnetic resonance, and elemental analysis. The distinction between research chemical labeling and human use is significant because quality standards and oversight differ.
Handling and quality assessment of cardarine reference material follow general laboratory practices for poorly characterized compounds. It typically appears as a white to off-white powder and is sparingly soluble in water but soluble in organic solvents such as dimethyl sulfoxide and ethanol. Storage recommendations usually specify a cool, dry, dark place, with long-term storage at low temperature and desiccation. Purity may be checked by high-performance liquid chromatography with ultraviolet detection, while identity is confirmed by mass spectrometry and nuclear magnetic resonance. No pharmacopeial monograph exists, so reported purity and stability depend on the supplier’s methods.
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.
| Property | Value | Notes |
|---|---|---|
| WADA classification | S4 Hormone and Metabolic Modulators | Prohibited at all times in sport. |
| Drug approval status | Not approved in major jurisdictions | No accepted therapeutic indication. |
| Common detection method | LC-MS/MS | Detects parent compound and metabolites. |
| Typical test matrix | Urine or blood | Urine is common in anti-doping testing. |
| Product labeling | Research chemical or supplement | Often not independently verified. |
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.
Cardarine is a common name for GW501516, a synthetic compound studied for its effects on lipid and glucose metabolism. It functions as an agonist at peroxisome proliferator-activated receptor delta, or PPARδ, a nuclear receptor that influences gene expression. The molecule is not a steroid, nor is it a selective androgen receptor modulator. It is also known in research and sports literature as GW-501516 and endurobol. Early laboratory work examined its metabolic activity in cell cultures and animal models.
Products sold as cardarine have been found to contain incorrect compounds, variable amounts, or no active ingredient at all. Independent testing is required to verify identity and purity. Common analytical approaches include high-performance liquid chromatography, mass spectrometry, and nuclear magnetic resonance for structural confirmation. These methods can distinguish GW501516 from related PPAR agonists and from unrelated steroids. For regulators and researchers, such verification is central to interpreting both biological results and adverse event reports.
Cardarine is prohibited in competitive sport under the World Anti-Doping Agency code, where it is classified as a metabolic modulator. It is not approved as a prescription medicine in the United States, European Union, or other major markets. Regulatory action has focused on its presence in sports and in products marketed as research chemicals. Because it has no accepted medical indication, supply is often unregulated. This status creates legal and safety uncertainties for anyone who encounters the substance.
Anti-doping laboratories detect GW501516 and its metabolites using liquid chromatography-tandem mass spectrometry. Urine is the most common matrix, though blood and dried blood spots may also be used in some programs. Detection depends on factors such as dose, timing, metabolism, and the sensitivity of the assay. Published methods describe limits of detection in the low nanogram per milliliter range for related compounds. Exact detection windows are not fixed for all situations and remain an area of ongoing study.
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.
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.
King William I appointed Otto von Bismarck as the Minister President of Prussia in 1862. Bismarck successfully concluded the war with Denmark in 1864; the subsequent decisive Prussian victory in the Austro-Prussian War of 1866 enabled him to create the North German Confederation which excluded Austria. After the defeat of France in the Franco-Prussian War, the German princes proclaimed the founding of the German Empire in 1871. Prussia was the dominant constituent state of the new empire; the King of Prussia ruled as its Emperor (Kaiser), and Berlin became its capital. In the Gründerzeit period following the unification of Germany, Bismarck's foreign policy as chancellor of Germany secured Germany's position as a great nation by forging alliances and avoiding war. However, under Wilhelm II, Germany took an imperialistic course, leading to friction with neighbouring countries. A dual alliance was created with the multinational realm of Austria-Hungary; the Triple Alliance of 1882 included Italy. Britain, France and Russia also concluded alliances to protect against Habsburg interference with Russian interests in the Balkans or German interference against France. At the Berlin Conference in 1884, Germany claimed several colonies including German East Africa, German South West Africa, Togoland, and Kamerun. Germany later expanded its colonial empire to include holdings in the Pacific and China.
=== Imaging === Right upper quadrant abdominal ultrasound is most commonly used to diagnose cholecystitis. Ultrasound findings suggestive of acute cholecystitis include gallstones, pericholecystic fluid (fluid surrounding the gallbladder), gallbladder wall thickening (wall thickness over 3 mm), dilation of the bile duct, and sonographic Murphy's sign. Given its higher sensitivity, hepatic iminodiacetic acid (HIDA) scan can be used if ultrasound is not diagnostic. CT scan may also be used if complications such as perforation or gangrene are suspected.
Polymerase chain reaction (PCR) is the primary gene amplification technique that has revolutionized modern biochemistry. Polymerase chain reaction was developed by Kary Mullis in 1983. There are four steps to a proper polymerase chain reaction: 1) denaturation 2) extension 3) insertion (of gene to be expressed) and finally 4) amplification of the inserted gene. These steps with simple illustrative examples of this process can be seen in the image below and to the right of this section. This technique allows for the copy of a single gene to be amplified into hundreds or even millions of copies and has become a cornerstone in the protocol for any biochemist that wishes to work with bacteria and gene expression. PCR is not only used for gene expression research but is also capable of aiding laboratories in diagnosing certain diseases such a lymphomas, some types of leukemia, and other malignant diseases that can sometimes puzzle doctors. Without polymerase chain reaction development, there are many advancements in the field of bacterial study and protein expression study that would not have come to fruition. The development of the theory and process of polymerase chain reaction is essential but the invention of the thermal cycler is equally as important because the process would not be possible without this instrument. This is yet another testament to the fact that the advancement of technology is just as crucial to sciences such as biochemistry as is the painstaking research that leads to the development of theoretical concepts.
== Medical uses == Sertraline has been approved for major depressive disorder, obsessive–compulsive disorder (OCD), post-traumatic stress disorder (PTSD), premenstrual dysphoric disorder, panic disorder, social anxiety disorder (SAD), and generalized anxiety disorder (GAD). Sertraline is approved for use in children with OCD.
The armed forces of Brazil are the largest in Latin America by active personnel and the largest in terms of military equipment. It consists of the Brazilian Army (including the Army Aviation Command), the Brazilian Navy (including the Marine Corps and Naval Aviation) and the Brazilian Air Force. Brazil's conscription policy gives it one of the world's largest military forces, estimated at more than 1.6 million reservists annually. The Air Force is the largest in Latin America and has about 700 crewed aircraft in service and effective about 67,000 personnel. Numbering close to 236,000 active personnel, the Brazilian Army has the largest number of armored vehicles in South America, including armored transports and tanks. The states' Military Police and the Military Firefighters Corps are designated as auxiliary forces of the army by the constitution, but are under the control of each state's governor. Brazil's navy once operated some of the most powerful warships in the world with the two Minas Geraes-class dreadnoughts, sparking a naval arms race between Argentina, Brazil, and Chile. Today, it is a green water force and has a group of specialized elite in retaking ships and naval facilities, GRUMEC, unit specially trained to protect Brazilian oil platforms along its coast. As of 2022, it is the only navy in Latin America that operates a helicopter carrier, NAM Atlântico and one of twelve navies in the world to operate or have one under construction.
Sources: en.wikipedia.org
== Australian National Dictionary Centre == The Australian National Dictionary Centre has announced a Word of the Year each since 2006. The word is chosen by the editorial staff, and is selected on the basis of having come to some prominence in the Australian social and cultural landscape during the year. The Word of the Year is often reported in the media as being Australia's word of the year, but the word is not always an Australian word.
=== Prevalence === Riboflavin deficiency is uncommon in the US and in other countries with wheat flour or corn meal fortification programs. From data collected in biannual surveys of the US population, for ages 20 and over, 22% of women and 19% of men reported consuming a supplement that contained riboflavin, typically a vitamin-mineral multi-supplement. For the non-supplement users, the dietary intake of adult women averaged 1.74 mg/day and men 2.44 mg/day. These amounts exceed the RDAs for riboflavin of 1.1 and 1.3 mg/day respectively. For all age groups, on average, consumption from food exceeded the RDAs. A 2001-02 US survey reported that less than 3% of the population consumed less than the Estimated Average Requirement of riboflavin.
Formation of a secondary structure is the first step in the folding process that a protein takes to assume its native structure. Characteristic of secondary structure are the structures known as alpha helices and beta sheets that fold rapidly because they are stabilized by intramolecular hydrogen bonds, as was first characterized by Linus Pauling. Formation of intramolecular hydrogen bonds provides another important contribution to protein stability. α-helices are formed by hydrogen bonding of the backbone to form a spiral shape (refer to figure on the right). The β pleated sheet is a structure that forms with the backbone bending over itself to form the hydrogen bonds (as displayed in the figure to the left). The hydrogen bonds are between the amide hydrogen and carbonyl oxygen of the peptide bond. There exists anti-parallel β pleated sheets and parallel β pleated sheets where the stability of the hydrogen bonds is stronger in the anti-parallel β sheet as it hydrogen bonds with the ideal 180 degree angle compared to the slanted hydrogen bonds formed by parallel sheets.
== See also == Delta sleep-inducing peptide – NeuropeptidePages displaying short descriptions of redirect targetsPages displaying short descriptions with no spaces Electroencephalography – Electrophysiological method to record electrical activity of the brain K-complex – Waveform seen during stage 2 NREM sleep Sensorimotor rhythm – Oscillatory idle rhythm of synchronized electric brain activity slow-wave sleep – Period of sleep in humans and other animals Wolff–Parkinson–White syndrome – Abnormal heart rhythm due to faulty electrical connections in the heart
An epitope, () also known as antigenic determinant, is the part of an antigen that is recognized by the immune system, specifically by antibodies, B cells, or T cells. The part of an antibody that binds to the epitope is called a paratope. Although epitopes are usually non-self proteins, sequences derived from the host that can be recognized (as in the case of autoimmune diseases) are also epitopes. The epitopes of protein antigens are divided into two categories, conformational epitopes and linear epitopes, based on their structure and interaction with the paratope. Conformational and linear epitopes interact with the paratope based on the 3-D conformation adopted by the epitope, which is determined by the surface features of the involved epitope residues and the shape or tertiary structure of other segments of the antigen. A conformational epitope is formed by the 3-D conformation adopted by the interaction of discontiguous amino acid residues. In contrast, a linear epitope is formed by the 3-D conformation adopted by the interaction of contiguous amino acid residues. A linear epitope is not determined solely by the primary structure of the involved amino acids. Residues that flank such amino acid residues, as well as more distant amino acid residues of the antigen affect the ability of the primary structure residues to adopt the epitope's 3-D conformation. 90% of epitopes are conformational.
Sources: en.wikipedia.org
In China, consumption of high-fat foods has increased, while consumption of rice and other goods has decreased. Overeating leads to many diseases, such as heart disease and diabetes, that may be fatal.
== Geography == Nad, County Cork, a village in Ireland Nanggroe Aceh Darussalam, a region in Sumatra North American Datum, a series of geographic coordinate systems North Atlantic Drift, an Atlantic Ocean current Hobli, a subdivision of a taluka in southern India
=== Resistance === Resistance to colistin is rare, but has been described. As of 2017, no agreement exists about how to define colistin resistance. The Société Française de Microbiologie uses a MIC cut-off of 2 mg/L, whereas the British Society for Antimicrobial Chemotherapy sets a MIC cutoff of 4 mg/L or less as sensitive, and 8 mg/L or more as resistant. No standards for describing colistin sensitivity are given in the United States. The first known colistin-resistance gene in a plasmid which can be transferred between bacterial strains is mcr-1. It was found in 2011 in China on a pig farm where colistin is routinely used and became publicly known in November 2015. The presence of this plasmid-borne gene was confirmed starting December 2015 in South-East Asia, several European countries, and the United States. It is found in certain strains of the bacteria Paenibacillus polymyxa. India reported the first detailed colistin-resistance study, which mapped 13 colistin-resistant infections recorded over 18 months. It concluded that pan-drug-resistant infections, particularly those in the bloodstream, have a higher mortality. Multiple other cases were reported from other Indian hospitals. Although resistance to polymyxins is generally less than 10%, it is more frequent in the Mediterranean and South-East Asia (Korea and Singapore), where colistin resistance rates are increasing. Colistin-resistant E. coli was identified in the United States in May 2016. Multiple mobile colistin resistance (mcr) genes have been identified since the discovery of mcr-1.
=== Position of Tantulocarida === According to Petrunina A.S. and Kolbasov G.A., the sixth subclass of Maxillopoda Tantulocarida may lie within Thecostraca, forming a clade with thecostracan infraclass Cirripedia (if so, Thecostraca excluding Tantulocarida is paraphyletic):
Josh Allen became the first player to score a rushing touchdown, a receiving touchdown and multiple passing touchdowns in a single game. Bobby Wagner extended his streak of recording 100 tackles in a season to 13 years. He is the second player to record the feat, joining London Fletcher. Jayden Daniels became the first rookie to complete 80 percent of his passes, throw three touchdowns, and run for a touchdown in a single game. Jameis Winston became the first player in the Super Bowl era to have at least 400 passing yards, four passing touchdowns and two interceptions returned for touchdowns in a game. Justin Herbert became the third player to have at least 10 consecutive games without interception (minimum 15 attempts per game), joining Tom Brady and Derek Carr. The Pittsburgh Steelers tied the record for most consecutive seasons finishing with a winning percentage of .500 or better, with 21. They share the record with the Dallas Cowboys, who did so from 1965 to 1985. The Cincinnati Bengals tied the single-season record for most games lost while scoring at least 30 points, with four. They share the record with the 2002 Kansas City Chiefs. Week 14
Sources: en.wikipedia.org
Anti-doping laboratories typically use LC-MS/MS to detect GW501516 and its metabolites in urine. The method is sensitive and can identify the compound at low concentrations. Detection depends on sample timing, metabolism, and the specific assay.
Legality varies by country and context. It lacks marketing approval as a medicine in major countries. Sports organizations prohibit its use at all times.
A certificate of analysis may report identity, purity, and testing methods for a specific batch. It does not guarantee safety or legal status. Independent verification can confirm whether the material matches the label.
Cardarine targets PPARδ, a nuclear receptor involved in lipid and energy metabolism. It does not bind the androgen receptor in the way SARMs do.