A practical reference on circadian clock: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
This page was last updated on 2025-09-26 and is reviewed periodically as new material appears.
REV-ERB proteins help regulate daily cycles in gene expression, including genes tied to lipid and glucose metabolism. SR9009 binds these receptors and alters their activity in cell and animal experiments. Consequences observed in rodents include changes in skeletal muscle oxidative capacity, blood lipid levels, and exercise performance. The precise chain from receptor occupancy to whole-body effects is still an active area of study. Human responses cannot be assumed from rodent data.
Most published work on SR9009 consists of preclinical studies. It is widely sold as a research chemical, a category that does not imply safety, efficacy, or pharmaceutical-grade quality. Sports anti-doping organizations have listed SR9009 as a prohibited substance, and its presence in an athlete sample can lead to sanctions. Legal status differs by country; in several jurisdictions it is not approved for human consumption and may be treated as an unapproved new drug.
Several misconceptions surround SR9009. It is often described as a SARM, a steroid, or an exercise pill, but its known target is the REV-ERB receptor family. Rodent studies have examined exercise capacity and metabolic markers, yet human outcomes remain unproven. Oral bioavailability appears low in animals, and human pharmacokinetics are not well characterized. Online products may contain impurities or different compounds, so identity and purity testing are important for research use.
Analytical chemists detect SR9009 with liquid chromatography-tandem mass spectrometry, commonly abbreviated LC-MS/MS. Sample preparation may involve protein precipitation, liquid-liquid extraction, or solid-phase extraction before analysis. Laboratories can target the parent compound or its metabolites, depending on the matrix and the purpose of testing. Anti-doping methods require sensitive and specific assays because concentrations in biological samples can be low. Reference standards and validated methods are essential for reliable identification and quantification.
Regulatory agencies have not approved SR9009 for human therapeutic use. It is typically sold as a research chemical with labels stating that it is not for human consumption. The World Anti-Doping Agency prohibits the substance in sport, generally under the category of non-approved substances. Customs and national laws may restrict importation, sale, or possession. Product quality and legal status can vary by country and vendor, and therapeutic claims are not permitted in regulated advertising because the compound lacks approval.
| Property | Value | Notes |
|---|---|---|
| Common name | SR9009 | Also referred to as Stenabolic in non-scientific contexts. |
| Chemical class | Synthetic small molecule | Not a steroid or peptide hormone. |
| Receptor target | REV-ERBα and REV-ERBβ | Nuclear receptor agonist in preclinical studies. |
| Development status | Investigational | No approved human therapeutic indication. |
| Regulatory attention | Prohibited in sport | Listed by anti-doping authorities. |
The mechanism of action involves binding to REV-ERB receptors and recruiting corepressor complexes, which represses target gene transcription. This contrasts with many nuclear receptor agonists that activate transcription. Downstream effects may include changes in autophagy, mitochondrial biogenesis, and lipid handling, but the precise pathways remain an active area of study. Whether these molecular events translate into meaningful physiological effects in humans is unresolved. Most evidence comes from cultured cells and rodent models rather than human participants.
SR9009 is a synthetic small molecule developed as an agonist of the nuclear receptors REV-ERBα (NR1D1) and REV-ERBβ (NR1D2). These receptors help regulate circadian rhythms and metabolic gene expression. In cell and animal studies, SR9009 alters transcription of genes involved in lipid metabolism, inflammation, and mitochondrial function. It is not an approved medicine, and its pharmacological profile in humans remains largely uncharacterized. The compound is frequently discussed in the context of circadian biology and metabolic research rather than clinical use.
Watson then made a successful return to football with a dominant game against Hawthorn in a 25-point win. On 9 August 2017, with three rounds left in the home-and-away season, Watson announced that he would retire at the end of the season. Watson then played in three of Essendon's last four matches, with his final game coming in the 65-point elimination final loss to Sydney at the Sydney Cricket Ground. Watson played 20 games in his final season, which is the most he had played in a season since 2012, to finish on 220 games for Essendon.
As one example, in the 1950s, the Wonder Bread company sponsored the Howdy Doody television show, with host Buffalo Bob Smith telling the audience, "Wonder Bread builds strong bodies 8 ways", referring to the number of added nutrients.
Also, he claimed a brief dispute with The Rock was resolved quickly upon his return, and that none of his disputes with the talent roster continued or played the major part in his departure. In February, Austin returned at No Way Out on February 23 by defeating Eric Bischoff. Austin would wrestle only one match between then and WrestleMania, in another short match against Bischoff on Raw. He entered a feud with The Rock, who returned around the same time as a smug, Hollywood sell-out heel. The Rock was offended that the WWE fans voted for Austin in a WWE Magazine poll to determine the 'Superstar of the Decade'. He expressed his frustration at having never defeated Austin at WrestleMania, and challenged Austin to a match at WrestleMania XIX on March 30. Austin was then defeated by The Rock at WrestleMania XIX, in what would be Austin's final match for 19 years.
Social disorganization theory is intended to be applied to neighborhood level street crime, thus the context of gang activity, loosely formed criminal associations or networks, socioeconomic demographic impacts, legitimate access to public resources, employment or education, and mobility give it relevance to organized crime. Where the upper- and lower-classes live in close proximity this can result in feelings of anger, hostility, social injustice and frustration. Criminals experience poverty; and witness affluence they are deprived of and which is virtually impossible for them to attain through conventional means. The concept of neighborhood is central to this theory, as it defines the social learning, locus of control, cultural influences and access to social opportunity experienced by criminals and the groups they form. Fear of or lack of trust in mainstream authority may also be a key contributor to social disorganization; organized crime groups replicate such figures and thus ensure control over the counter-culture. This theory has tended to view violent or antisocial behavior by gangs as reflective of their social disorganization rather than as a product or tool of their organization.
Wood pulp made from birch gives relatively long and slender fibres for a hardwood. The thin walls cause the fibre to collapse upon drying, giving a paper with low bulk and low opacity. The birch fibres are, however, easily fibrillated and give about 75% of the tensile strength of softwood. The low opacity makes it suitable for making glassine. In India, the birch (Sanskrit: भुर्ज, bhurja) holds great historical significance in the culture of North India, where the thin bark coming off in winter was extensively used as writing paper. Birch paper (Sanskrit: भुर्ज पत्र, bhurja patra) is exceptionally durable and was the material used for many ancient Indian texts. The Roman period Vindolanda tablets also use birch as a material on which to write and birch bark was used widely in ancient Russia as notepaper (beresta) and for decorative purposes and even making footwear (lapti) and baskets.
Sources: en.wikipedia.org
=== Anti-atherosclerotic and anti-inflammatory effects === 1-MNA exhibits anti-atherosclerotic and anti-inflammatory properties by improving the prostacyclin- and NO-dependent secretory function of the vascular endothelium, inhibiting platelet activation, reducing inflammation within atherosclerotic plaques, and lowering systemic inflammation and TNF-α levels. The anti-inflammatory effects of 1-MNA are linked to its ability to stimulate endogenous PGI2 secretion and reduce IL-4 and TNF-α levels. These effects are mediated by endothelial mechanisms rather than a direct impact on immune cell function, ensuring that the body's immune response is not weakened.
The reign of Sigismund II ended the Jagiellonian period, but gave rise to the Union of Lublin (1569), an ultimate fulfillment of the union with Lithuania. This agreement transferred Ukraine from the Grand Duchy of Lithuania to Poland and transformed the Polish–Lithuanian polity into a real union, preserving it beyond the death of the childless Sigismund II, whose active involvement made the completion of this process possible. Livonia in the far northeast was incorporated by Poland in 1561 and Poland entered the Livonian War against Russia. The executionist movement, which attempted to check the progressing domination of the state by the magnate families of Poland and Lithuania, peaked at the Sejm in Piotrków in 1562–63. On the religious front, the Polish Brethren split from the Calvinists, and the Protestant Brest Bible was published in 1563. The Jesuits, who arrived in 1564, were destined to make a major impact on Poland's history.
Tequila is made from the blue agave plant, primarily in the area surrounding the town of Tequila 65 km (40 mi) northwest of Guadalajara, and in the Jaliscan Highlands (Los Altos de Jalisco) of the central western Mexican state of Jalisco. Aside from its geographical distinction, tequila is differentiated from other varieties of mezcal in that all of the agave used in tequila is blue agave, and the methods of production are different. The red volcanic soils in the region of Tequila are well suited for growing the blue agave, and more than 300 million plants are harvested there each year. Agave grows differently depending on the region. Blue agaves grown in the highland Los Altos region are larger and sweeter in aroma and taste. Agaves harvested in the valley region have a more herbaceous fragrance and flavor. Due to its historical and cultural importance, the region near Tequila was declared a UNESCO World Heritage Site in 2006, the Agave Landscape and Ancient Industrial Facilities of Tequila. Planting, tending, and harvesting the agave plant remains a manual effort, largely unchanged by modern farm machinery and relying on centuries-old expertise. The people who harvest it, the jimadores [ximaˈðoɾes], passed down the knowledge of how the plants should be cultivated from generation to generation. By regularly trimming any quiotes [ˈkjotes] (a stalk at the center of the plant that could grow several meters high if not cut back), the jimadores prevent the agave from flowering and dying early, allowing it to fully ripen.
where SCr is serum creatinine (mg/dL), k is 0.7 for females and 0.9 for males, a is −0.241 for females and −0.302 for males, min indicates the minimum of SCr/k or 1, and max indicates the maximum of SCr/k or 1. As separate equations for different populations: For creatinine (IDMS calibrated) in mg/dL:
Robert Blake, Assistant Secretary of State for South and Central Asian Affairs, dismissed any concerns over a rift with India regarding American Af-Pak policy. Calling India and the United States "natural allies", Blake said that the United States cannot afford to meet the strategic priorities in Pakistan and Afghanistan at "the expense of India". India criticized the Obama administration's decision to limit H-1B (temporary) visas, and India's then External Affairs Minister Pranab Mukherjee (later, the president of India until 2017) said that India would oppose US "protectionism" at various international forums. India's Commerce Minister Kamal Nath said that India may move against Obama's outsourcing policies at the World Trade Organization. In May 2009, Obama reiterated his anti-outsourcing views and criticized the current US tax policy "that says you should pay lower taxes if you create a job in Bangalore, India, than if you create one in Buffalo, New York." However, during the US India Business Council meeting in June 2009, U.S. Secretary of State Hillary Clinton advocated for stronger economic ties between India and the United States. She also rebuked protectionist policies, saying that the U.S will not use the 2008 financial crisis as an excuse to implement protectionism. In June 2010, the United States and India formally re-engaged the US-India Strategic Dialogue initiated under President Bush when a large delegation of high-ranking Indian officials, led by External Affairs Minister S. M. Krishna, visited Washington, D.C.
Sources: en.wikipedia.org
In anatomy and osteology, a foramen (; pl.: foramina, or foramens ; from Latin 'an opening produced by boring') is an opening or enclosed gap within the dense connective tissue (bones and deep fasciae) of extant and extinct amniote animals, typically to allow passage of nerves, arteries, veins or other soft tissue structures (e.g. muscle tendon) from one body compartment to another.
=== Identification / Quantification === The detection of herbal toxins has generally caused a diagnostic problem due to wide variety of plants and limited standard screening. For a long time, the identification of ATR poisoning was limited to postmortem analysis of one's kidneys or liver. Subsequent developments made to identify the presence of ATR in bodily fluids (blood or urine) only worked with high concentrations of ATR. Now, more recent research has established the necessary sensitivity and specificity to be applied to forensic toxicology. The development of the below procedure relied on findings from unsuccessful methods of identification, primarily traced to the following literature in which the specificity and sensitivity was improved over time. Due to the limited research on the subject of ATR identification, this literature represents the primary sources to review:
Jean-Louis Sebagh is an Algerian-born French cosmetic surgeon and doctor who is known for his anti-aging surgeries, and use of botox, collagen and vitamin injections specifically on the face and neck. Sebagh's high profile clients including numerous celebrities, models and socialites include Cindy Crawford, Elle McPherson and Kylie Minogue. and he has offices in Paris and London.
The friction factor fD is not a constant: it depends on such things as the characteristics of the pipe (diameter D and roughness height ε), the characteristics of the fluid (its kinematic viscosity ν [nu]), and the velocity of the fluid flow ⟨v⟩. It has been measured to high accuracy within certain flow regimes and may be evaluated by the use of various empirical relations, or it may be read from published charts. These charts are often referred to as Moody diagrams, after L. F. Moody, and hence the factor itself is sometimes erroneously called the Moody friction factor. It is also sometimes called the Blasius friction factor, after the approximate formula he proposed. Figure 1 shows the value of fD as measured by experimenters for many different fluids, over a wide range of Reynolds numbers, and for pipes of various roughness heights. There are three broad regimes of fluid flow encountered in these data: laminar, critical, and turbulent.
Sources: en.wikipedia.org
It is a synthetic compound studied as an agonist of REV-ERB nuclear receptors. It is not an approved medicine and has mainly been examined in laboratory and animal research.
No. It is a small molecule that binds nuclear receptors involved in circadian regulation. Its classification differs from anabolic steroids or peptide hormones.
Published human clinical trial data are lacking. Most safety and activity information comes from preclinical models, so effects in people remain uncertain.
Legality depends on the country and the intended use. In many places it is not approved as a medicine and may be sold only as a research chemical. Importation or possession can be restricted, and sports organizations prohibit it.