Everything below concerns pentadecapeptide. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2026-08-01. Where a claim depends on a specific study, the study is described rather than over-claimed.
Human data are far more limited than animal data. A small number of clinical reports exist, generally with few participants and without the randomization or blinding expected in later-phase trials. No large, independently replicated human trial has appeared in the indexed peer-reviewed literature. Statements about effects in people therefore rest on extrapolation from animal work rather than on direct evidence, and the strength of that extrapolation remains an open question rather than a settled matter.
Proposed mechanisms include interaction with the nitric oxide system, modulation of growth factor signaling, and effects on blood vessel formation. None of these has been established as the primary mode of action, and some proposed pathways rest on indirect measurements. Whether the reported effects depend on a specific receptor has not been determined. Stability in gastric acid, unusual for a peptide of this size, is also reported in animal work, but the reason for it is not firmly established.
Several mechanisms have been proposed to explain the activity observed in animal models. The most frequently cited involve signaling through vascular endothelial growth factor receptor 2 and modulation of the nitric oxide system. Researchers have also described interactions with protective pathways in the gut lining. These proposed mechanisms appear in the literature as hypotheses supported by preclinical observations, not as confirmed pathways in humans. The precise way the peptide produces its reported effects, and whether those effects carry across species, remain areas of active and unresolved investigation.
BPC-157 is a synthetic pentadecapeptide, meaning it consists of fifteen amino acids joined in a single chain. Its sequence is Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val, a fragment corresponding to part of a larger protein found in human gastric juice. The peptide was first described in the 1990s by researchers in Zagreb who were studying gastric protective factors. It is not a naturally circulating hormone; it is a laboratory-made fragment derived from a stomach protein. The name is an abbreviation of body protection compound, with the number referring to the fragment's position in the source protein.
| Property | Value | Notes |
|---|---|---|
| Study species | Rodents, mainly rats | Most reports use surgically induced injury models |
| Typical administration route | Subcutaneous or intraperitoneal injection | Routes differ between reports, which complicates comparison |
| Human trial evidence | Limited, small-scale reports | No large randomized trial in indexed journals |
| Reported outcome categories | Mucosal healing, tendon repair, vascular recovery | Endpoints are not standardized across studies |
| Mechanism status | Not established | Proposed pathways lack direct confirmation |
Identity and purity are usually assessed by reversed-phase high-performance liquid chromatography with ultraviolet detection near 214 nanometers, a wavelength that captures the peptide backbone. The main peak area is reported as a percentage of total peak area, which serves as a conventional purity figure. Mass spectrometry provides an independent check on molecular mass and helps confirm the expected sequence. Additional tests may include amino acid analysis and water content determination. Results are only comparable when the same column, gradient, and detection settings are used.
Peptides are susceptible to hydrolysis, oxidation, and aggregation, and BPC-157 is no exception. The lyophilized powder form is generally more stable than a solution because residual moisture is low and molecular mobility is reduced. Once dissolved, the peptide is exposed to water, oxygen, and trace metal ions that accelerate degradation. Light exposure and repeated freeze-thaw cycles are also commonly cited as sources of loss. These general principles guide most handling recommendations found in supplier documentation.
Most published findings come from rodent experiments using induced injury or surgical models. Human reports remain scarce and are largely observational, which limits how much can be stated with confidence. Questions about absorption, distribution, metabolism, and clearance in people are still open. Dose translation between species is likewise unresolved. Researchers tend to read the animal literature as a starting point rather than a settled account.
BPC-157 is a synthetic peptide composed of fifteen amino acids. Its sequence corresponds to part of a protein found in human gastric juice, which is the origin of the "body protection compound" label. In laboratory work the material is treated as a defined research chemical rather than a finished product. Published research has centered on animal models, and the peptide is not an approved medicine in most countries.
The peptide was first described in the early 1990s by a group studying gastric secretions and tissue repair. Its fifteen-residue chain is usually written as GEPPPGKPADDAGLV in single-letter code. The free peptide has the formula C62H98N16O22 and a theoretical mass near 1419.5 daltons. These identifiers are established chemical facts that can be checked against standard peptide databases. There is no ambiguity about the primary structure.
Evidence in humans is limited. Small clinical studies have examined the peptide in contexts such as ulcerative colitis and wound healing, but participant numbers are small and independent replication is scarce. It is not approved as a medicine by major regulatory agencies and is distributed mainly as a research material or compounded preparation. Long-term human safety data are not established, and questions about absorption through non-injected routes remain open rather than resolved. Claims about its effects are best read against these gaps.
BPC-157 is a synthetic peptide of fifteen amino acids, written in single-letter code as GEPPPGKPADDAGLV. The sequence corresponds to a partial fragment of a protein isolated from human gastric juice, described in early reports as body protection compound. The number 157 refers to a fragment designation in that work rather than to molecular mass. Initial descriptions appeared in the early 1990s, when the fragment was reported to protect gastrointestinal tissue in animal models. Commercial material is produced by solid-phase peptide synthesis rather than extracted from biological sources.
Laboratory research on this peptide has examined a wide and heterogeneous set of endpoints, including gastric ulcer models, tendon and ligament injury, wound closure, and intestinal inflammation. Most published findings come from rodent studies, and reported effect sizes are often large relative to controls. Because the compound has been tested across many unrelated injury models, the literature is frequently described as unusually broad for a single peptide. A substantial share of this work originates from a small number of research groups, which matters when assessing how widely results have been reproduced.
== Early life, education, and career == Wittman was born in Washington, D.C., the son of adoptive parents Regina C. (née Wood) and Frank Joseph Wittman. His father was of German descent and his mother's ancestors included immigrants from Ireland and Canada. He grew up in Henrico County, Virginia. He attended the Virginia Polytechnic Institute and State University (Virginia Tech) as a member of the Corps of Cadets and Army ROTC and studied biology. While at Virginia Tech, he spent the summers working at a tomato cannery and on a fishing vessel. Also while in college, Wittman was a member of the Delta Tau Delta fraternity. He earned a master's degree in public health from the University of North Carolina at Chapel Hill in 1990 and a Ph.D. from Virginia Commonwealth University in 2002. Wittman worked for 20 years with the Virginia Department of Health. He served as an environmental health specialist and was field director for the Division of Shellfish Sanitation. Wittman served on the Montross Town Council from 1986 to 1996 and as mayor of the Town of Montross from 1992 to 1996. Two of his major initiatives in this office were the overhaul of the sewage system and the development of a computerized system for tax billing. From 1996 to 2005, Wittman served on the Westmoreland County Board of Supervisors, the last two years as chair. He helped create new libraries and pushed for raises in teacher salaries.
=== Flavoprotein-related diseases === Due to the importance of flavoproteins, it is unsurprising that approximately 60% of human flavoproteins cause human disease when mutated. In some cases, this is due to a decreased affinity for FAD or FMN and so excess riboflavin intake may lessen disease symptoms, such as for multiple acyl-CoA dehydrogenase deficiency. In addition, riboflavin deficiency itself (and the resulting lack of FAD and FMN) can cause health issues. For example, in ALS patients, there are decreased levels of FAD synthesis. Both of these paths can result in a variety of symptoms, including developmental or gastrointestinal abnormalities, faulty fat break-down, anemia, neurological problems, cancer or heart disease, migraine, worsened vision and skin lesions. The pharmaceutical industry therefore produces riboflavin to supplement diet in certain cases. In 2008, the global need for riboflavin was 6,000 tons per year, with production capacity of 10,000 tons. This $150 to 500 million market is not only for medical applications, but is also used as a supplement to animal food in the agricultural industry and as a food colorant.
Hydrogen bonds arise from a combination of electrostatics (multipole-multipole and multipole-induced multipole interactions), covalency (charge transfer by orbital overlap), and dispersion (London forces). In weaker hydrogen bonds, hydrogen atoms tend to bond to elements such as sulfur (S) or chlorine (Cl); even carbon (C) can serve as a donor, particularly when the carbon or one of its neighbors is electronegative (e.g., in chloroform, aldehydes and terminal acetylenes). Gradually, it was recognized that there are many examples of weaker hydrogen bonding involving donor other than N, O, or F and/or acceptor Ac with electronegativity approaching that of hydrogen (rather than being much more electronegative). Although weak (about 4.2 kJ/mol (1 kcal/mol)), "non-traditional" hydrogen bonding interactions are ubiquitous and influence structures of many kinds of materials. The definition of hydrogen bonding has gradually broadened over time to include these weaker attractive interactions. In 2011, an IUPAC Task Group recommended a modern evidence-based definition of hydrogen bonding, which was published in the IUPAC journal Pure and Applied Chemistry. This definition specifies:
== Common themes == Architect Richard Buday has contended that architectural works have been used to justify loyalty to an area's rulers, or to religious and spiritual figures. Buday suggests that "the Sphinx and the pyramids were outsized visual demands for respect and obedience to Pharaoh. The Parthenon was constructed for societal manipulation, as well as to honor a goddess (the temple's ornamentation reminded Athenians that their beating back of a Persian invasion was an act of divine intervention). Roman triumphal arches were self-aggrandizing demonstrations of rulers' might and superiority". Later in history, Buday writes that various leaders have invoked particular architectural styles to invoke connections with previous historical states and ideas which are associated with them, such as using ancient Greek and Roman imagery to convey the idea of democracy, or invoking similar classical architecture to denote imperial ambitions. In modern times, architecture is used to attract tourism.
== Development == Though development of the Quake version began in 1998, the Half-Life version of the mod was first publicly released in April, 2000. Version 2.1 was released on July 7, 2000. The final build is Release Candidate (RC) 3.0 which was released on April 18, 2005. FA was originally created by Caspar Milan Nielsen, Christian Øelund, and Brian Fuller. Versions 2.0 through (RC) 2.5 were developed under the leadership and lead programming of Eric Smith (Zerk). Firearms 2.4 was included in the Counter-Strike retail package and was later awarded PC Gamer's Mod of the Year award and PC Gamer's Best Multiplayer Game of the Year Runner-up in the year 2000. Firearms was at one time the #3 most popular mod based on the Half-Life engine, after Counter-Strike and Team Fortress Classic. Later versions, (RC) 2.6 through (RC) 3.0, were developed under the direction of Ben Irwin and Alex Jordan.
Sources: en.wikipedia.org
=== Fossil record === The earliest widely accepted animal fossils are rather modern-looking cnidarians, possibly from around 580 million years ago, although fossils from the Doushantuo Formation can only be dated approximately. The identification of some of these as embryos of animals has been contested, but other fossils from these rocks strongly resemble tubes and other mineralized structures made by corals. Their presence implies that the cnidarian and bilaterian lineages had already diverged. Although the Ediacaran fossil Charnia used to be classified as a jellyfish or sea pen, more recent study of growth patterns in Charnia and modern cnidarians has cast doubt on this hypothesis, leaving the Canadian polyp Haootia and the British Auroralumina as the only recognized cnidarian body fossils from the Ediacaran. Auroralumina is the earliest known animal predator. Few fossils of cnidarians without mineralized skeletons are known from more recent rocks, except in Lagerstätten that preserved soft-bodied animals. A few mineralized fossils that resemble corals have been found in rocks from the Cambrian period, and corals diversified in the Early Ordovician. These corals, which were wiped out in the Permian–Triassic extinction event about 252 million years ago, did not dominate reef construction since sponges and algae also played a major part. During the Mesozoic era, rudist bivalves were the main reef-builders, but they were wiped out in the Cretaceous–Paleogene extinction event 66 million years ago, and since then the main reef-builders have been scleractinian corals.
Acanthosis nigricans A brown to black, poorly defined, velvety hyperpigmentation of the skin, usually present in the posterior and lateral folds of the neck, the axilla, groin, umbilicus, and other areas. This occurs due to insulin spillover (from excessive production due to obesity or insulin resistance) into the skin which results in abnormal growth being observed. The most common cause would be insulin resistance, usually from type 2 diabetes mellitus. ACE inhibitor Angiotensin conversion enzyme. A class of drugs used to decrease hypertension, mainly by interfering with the renin kidney—blood pressure control cycle. An example is Ramparil. (See ARB). Adult-onset diabetes One of the former terms for Type 2 diabetes. See: Type 2 diabetes mellitus. Acetohexamide A pill taken to lower the level of glucose (sugar) in the blood. People with Type 2 diabetes may take these pills. See also: Oral hypoglycemic agents. One of the sulfonylurea drugs. (Dymelor Dimelor) Acetone A byproduct of fat metabolism. One of three ketone body substances. Produced in high levels during periods of stress, infection, etc possibly leading to diabetic ketoacidosis, a very serious condition. It can sometimes be smelled on the breath of those in, or about to enter diabetic ketoacidosis as a fruity (nail polish remover, or lacquer thinner) sort of smell. It is very rapidly released into via the lungs into the breath, unlike the other ketone bodies. It is chemically a ketone. Acidosis An acidic condition in body fluids, chiefly blood.
=== Legal status in weapons === In 1996, the International Court of Justice (ICJ) gave an advisory opinion on the "legality of the threat or use of nuclear weapons". This made it clear, in paragraphs 54–56, that international law on poisonous weapons—the Second Hague Declaration of 29 July 1899, Hague Convention IV of 18 October 1907 and the Geneva Protocol of 17 June 1925—did not cover nuclear weapons, because their prime or exclusive use was not to poison or asphyxiate. This ICJ opinion was about nuclear weapons, but the sentence "The terms have been understood, in the practice of States, in their ordinary sense as covering weapons whose prime, or even exclusive, effect is to poison or asphyxiate," also removes depleted uranium weaponry from coverage by the same treaties as their primary use is not to poison or asphyxiate, but to destroy materiel and kill soldiers through kinetic energy. The Sub-Commission on Prevention of Discrimination and Protection of Minorities of the United Nations Human Rights Commission, passed two motions—the first in 1996 and the second in 1997. They listed weapons of mass destruction, or weapons with indiscriminate effect, or of a nature to cause superfluous injury or unnecessary suffering and urged all states to curb the production and the spread of such weapons. Included in the list was weaponry containing depleted uranium. The committee authorized a working paper, in the context of human rights and humanitarian norms, of the weapons. The requested UN working paper was delivered in 2002 by Y. K. J.
== Medical uses == Canagliflozin is indicated to be used with diet and exercise to lower blood sugar in adults with type 2 diabetes; to reduce the risk of major heart-related events such as heart attack, stroke, or death in people with type 2 diabetes who have known heart disease; and to reduce the risk of end-stage kidney disease, worsening of kidney function, heart-related death, and being hospitalized for heart failure in certain people with type 2 diabetes and diabetic kidney disease. Canagliflozin is an anti-diabetic medication used to improve blood sugar control in people with type 2 diabetes. It is a third-line medication to metformin. Per the British National Formulary it is also less preferred than a sulfonylurea as of 2019, while the American Diabetes Association and European Association for the Study of Diabetes consider either a SGLT2 inhibitor or GLP-1 receptor agonist a reasonable second line medication in those with heart disease. Canagliflozin decreases HbA1c levels by 0.77% to 1.16% when given by itself, in combination with metformin, in combination with metformin and a sulfonylurea, in combination with metformin and pioglitazone, or in combination with insulin, from initial HbA1c levels of 7.8% to 8.1%. When added to metformin, canagliflozin does not appear worse than sitagliptin or glimepiride in reducing HbA1c levels, while canagliflozin maybe better than sitagliptin and glimiperide in decreasing HbA1c. It is unclear whether or not it has any unique cardiovascular benefits beyond lowering blood sugar.
==== August 2008 ==== Nezavisimaya Gazeta reported in June 2008 that when Chechen peacekeepers from Vostok Battalion began serving in South Ossetia in the autumn of 2007, they began arresting armed people with fake peacekeeping IDs. However, the Chechens were soon ordered to cease the arrest of the impostors and armed people with unknown affiliations were now freely roaming South Ossetia. On 4 August 2008, Life.ru reported that after the end of the "Kavkaz 2008" exercises, the paratroopers from Pskov remained to occupy the key positions on the Roki and Mamison passes on the border. Several battalions of 58th Army were deployed close to the border and the South Ossetian sources told the newspaper that the deployment of troops began on the night of 2–3 August 2008. Life.ru reported, "The deployment of the Russian military hardware near the Roki Tunnel will allow as soon as possible to move troops to help the peacemaking forces." On 6 August 2008, OsRadio reported that the volunteers were also arriving in Tskhinvali from Moscow. On 26 September 2008, Trud reported on the special battalion Vostok. One member of the battalion Khamzat said, "See what the "Red Star" wrote about us: Volunteers from neighboring republics arrive in South Ossetia. So we are volunteers?!" Khamzat added, "We are the regular subunit of 291-th Regiment of 42nd Guards Motor Rifle Division of the North Caucasus Military District. And we only act on orders." On 8 August 2008, Nezavisimaya Gazeta published an article by journalist who had spent previous three days in Chechnya.
Sources: en.wikipedia.org
College of Allied Health Sciences College of Medicine College of Nursing James L. Winkle College of Pharmacy Hoxworth Blood Center Metabolic Diseases Institute Cincinnati Diabetes and Obesity Center UC Cancer Institute UC Neuroscience Institute UC Heart, Lung and Vascular Institute
where the M over the arrow denotes that to conserve energy and momentum a third body is required (the molecularity of the reaction is three). Electron capture can be used in conjunction with chemical ionization. An electron capture detector is used in some gas chromatography systems.
Commission B1: Thermodynamics and Transfer Processes The objectives of Commission B1 on Thermodynamics and Transfer Processes are to provide academic and industrial information and data, and to propose any solutions on thermodynamics and transfer processes. The Commission B1 has been extremely active in IIR Working Groups, sub-commissions, IIR conferences, co-sponsored conferences, and commission business meetings. As well as being involved in IIR Working Groups on the mitigation of direct emissions of greenhouse gases in refrigeration, the commission is equally involved in the Working Group on Life Cycle Climate Performance (LCCP) Evaluation. Active in IIR conferences and congresses, Commission B1 similarly organises workshops in various fields such as refrigerant charge reduction in refrigerating systems. Initiatives and opportunities, such as the phase-down of high-GWP refrigerants, energy-efficient buildings and cars, transport refrigeration, food preservation, the economic importance of the refrigeration sector, the involvement of the younger generation and identifying industrial needs are all at the heart of Commission B1.
Their first son Prince Aegon was born in 120 AC, while their second son was born in 122 AC and named after Viserys. In 126 AC, Rhaenyra requested that Luke be recognized as the heir to Driftmark, which several members of House Velaryon protested under the accusation that he was not Laenor's son. As Viserys angrily ordered their tongues to be cut out, he slipped and cut his hand on the Iron Throne, a severe injury that gave him a fever from infection. Some maesters feared that he would die, but Viserys lived after two of his fingers were removed by Maester Gerardys, and he would never sit on the Iron Throne again. Gerardys was recommended by Rhaenyra as a replacement for the dead Grand Maester Mellos, while Alicent recommended Maester Alfador, her family's maester. Viserys decided to appoint neither man as Grand Maester and deferred to the Citadel to fill the office, who chose Maester Orwyle. As Viserys' health gradually weakened, Otto filled the small council with members loyal to the greens, including Lord Larys Strong, Ser Tyland Lannister, and Ser Jasper Wylde. Lord Commander of the Kingsguard Criston Cole was also an ardent supporter of Alicent, with Orwyle being politically neutral and Lord Lyman Beesbury opposing the greens. Viserys passed away in his sleep in 129 AC, having been discovered by a servant who informed Alicent of his status. In the interim, Alicent did not disclose Viserys' death to the public and summoned the small council to a secret meeting.
When archaic spiders moved from the water to the land in the Early Devonian period, they started making silk to protect their bodies and their eggs. Most spiders have appendages called spinnerets. These are organs that produce silk with which the spiders spin webs (although some use the silk to catch their prey in other ways). Spiders gradually started using silk for hunting purposes, first as guide lines and signal lines, then as ground or bush webs, and eventually as the aerial webs that are currently familiar. Spiders produce silk from their spinneret glands located at the tip of their abdomen. Each gland produces a thread for a special purpose – for example a trailed safety line, sticky silk for trapping prey or fine silk for wrapping it. Spiders use different gland types to produce different silks, and some spiders are capable of producing up to eight different silks during their lifetime. Most spiders have three pairs of spinnerets, each having its own function – there are also spiders with just one pair and others with as many as four pairs. Webs allow a spider to catch prey without having to expend energy by running it down, making it an efficient method of gathering food. The hair and claws on spiders' legs allow them to cling to their webs. The oils on their bodies keep them from sticking to their own webs. However these energy savings are somewhat offset by the fact that constructing the web is in itself energetically costly, due to the large amount of protein required in the form of silk.
Sources: en.wikipedia.org
It is not authorized as a medicine in the United States or the European Union. Regulatory treatment varies by jurisdiction, and in several places it is handled as a research chemical. Therapeutic claims are not supported by large human trials.
Human evidence is sparse and comes from small reports rather than large trials. Sample sizes are generally too small to support firm conclusions. The published record does not contain an independently replicated randomized trial.
Several pathways have been proposed, including effects on nitric oxide signaling and vessel formation. Direct confirmation of a primary molecular target is lacking. Some findings rest on indirect measurements, which leaves the mechanism an open question.
It is a chain of fifteen amino acids, referred to as a pentadecapeptide. The sequence is Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val. It corresponds to a fragment of a protein found in human gastric juice.