Everything below concerns pentadecapeptide. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2026-03-28. Numbers and descriptions here follow the published literature rather than marketing material.
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.
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 fifteen-amino-acid peptide whose sequence is GEPPPGKPADDAGLV. Its name derives from the phrase body protection compound, a term applied to a protein fraction originally detected in human gastric juice. The short peptide is not that full protein; it corresponds to a stable fragment of the larger molecule. Researchers frequently describe it as a pentadecapeptide because it contains exactly fifteen residues. Its neutral molecular mass is approximately 1419 daltons.
The sequence places several glycine and proline residues near the middle, which may influence how the chain folds in solution. The peptide is linear rather than cyclic, and it carries no disulfide bridges. Commercial material is commonly supplied as the acetate salt, although the free base and other counterion forms also appear. Because the term BPC-157 refers to a specific sequence, samples with slight sequence variants are chemically different substances. Published work generally treats the fifteen-residue sequence as the defining structure.
| Property | Value | Notes |
|---|---|---|
| Class | Synthetic peptide | Linear, fifteen residues |
| Sequence | GEPPPGKPADDAGLV | Single-letter amino acid code |
| Approximate mass | 1419 Da | Value reported for the free peptide |
| Reported origin | Fragment of a gastric juice protein | Used as the design template |
| Common synonyms | Body protection compound 157; PL 14736 | Naming varies across papers and suppliers |
Most published work on BPC-157 consists of preclinical studies, including rodent models of tissue injury, gastrointestinal lesions, and vascular or tendon damage, together with in vitro cell assays. Reviews frequently note that the mechanisms proposed in these papers remain incompletely characterised and that findings have not been confirmed in large randomised human trials. The compound is widely sold as a research chemical rather than a licensed medicine, and labels commonly carry a statement that it is not for human use. Whether any of the reported animal effects translate to humans is an open question rather than an established result.
Terminology in the literature is not fully standardised. Papers and product listings use BPC-157, BPC 157, and the longer phrase stable gastric pentadecapeptide BPC 157 interchangeably, and synonyms such as bepecin or PL 14736 appear in older or company-linked publications. Purity claims and reported masses can also differ between sources because peptide preparations may include counterions, residual solvents, or bound water. This variability complicates direct comparison of results across studies and makes the exact identity and grade of a given sample worth verifying. Discussions of the compound should therefore specify the source, salt form, and stated purity where those are known.
BPC-157 is a synthetic peptide composed of fifteen amino acid residues, with the sequence Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val. Its name derives from body protection compound, a term used for a protein fraction identified in human gastric juice. Researchers in Zagreb first reported the pentadecapeptide in the early 1990s and described it as a stable fragment of that larger protein. The compound is also catalogued as PL 14736 and, in some commercial contexts, as bepecin. Its molecular formula is C62H98N16O22 and its monoisotopic mass is approximately 1419 daltons.
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.
Proposed mechanisms in the literature involve the nitric oxide system, vascular endothelial growth factor signaling, and epidermal growth factor receptor pathways. Some studies report changes in blood vessel formation or in inflammatory mediators, while others describe interactions with nervous tissue. Much of this evidence rests on molecular markers in cultured cells or animal models. Whether the same pathways operate the same way in humans has not been established. Authors therefore tend to describe mechanisms as hypothetical rather than settled.
Direct human evidence is scarce. One trial in ulcerative colitis delivered the compound by enema and produced limited publicly reported results without a clear benefit. The compound is not an approved medicine in most jurisdictions. In many markets it is sold as a research chemical; in others it falls under prescription or controlled categories. Regulators have not confirmed any claimed medical use, and product labels rarely undergo premarket review.
The hypothalamus is commonly known as an integration center of the brain because of its role in integrating inputs from all areas of the brain and producing a specific response. In the neuroendocrine system, the hypothalamus receives electrical signals from different parts of the brain and translates those electrical signals into chemical signals in the form of hormones or releasing factors. These chemicals are then transported to the pituitary gland and from there to the systemic circulation.
Both carboxamides and aldoximes can be dehydrated using aluminum chloride and sodium iodide in acetonitrile. Likewise, both classes can be dehydrated with oxalyl chloride and catalytic dimethyl sulfoxide in a reaction analogous to the Swern oxidation. Conversion to nitriles under catalysis by heptavalent rhenium species (perrhenic acid or trimethylsilyl perrhenate) is effective for both amides and aldoximes; the water formed can be removed by azeotropic distillation. The conversion of aldehydes to nitriles via aldoximes is a popular laboratory route. Aldehydes react readily with hydroxylamine salts, sometimes at temperatures as low as ambient, to give aldoximes. These can be dehydrated to nitriles by simple heating, although a wide range of reagents may assist with this, including triethylamine/sulfur dioxide, zeolites, or sulfuryl chloride. The related hydroxylamine-O-sulfonic acid reacts similarly.
Most proteins can withstand one or two point mutations before their function changes. Non-conservative mutations result in an amino acid change that has different properties than the wild type. The protein may lose its function, which can result in a disease in the organism. For example, sickle-cell disease is caused by a single point mutation (a missense mutation) in the beta-hemoglobin gene that converts a GAG codon into GUG, which encodes the amino acid valine rather than glutamic acid. The protein may also exhibit a "gain of function" or become activated, such is the case with the mutation changing a valine to glutamic acid in the BRAF gene; this leads to an activation of the RAF protein which causes unlimited proliferative signalling in cancer cells. These are both examples of a non-conservative (missense) mutation. Silent mutations code for the same amino acid (a "synonymous substitution"). A silent mutation does not affect the functioning of the protein. A single nucleotide can change, but the new codon specifies the same amino acid, resulting in an unmutated protein. This type of change is called synonymous change since the old and new codon code for the same amino acid. This is possible because 64 codons specify only 20 amino acids. Different codons can lead to differential protein expression levels, however.
Sources: en.wikipedia.org
=== Endogenous production and effects === In the 1950s, the endogenous production of psychoactive agents was considered to be a potential explanation for the hallucinatory symptoms of some psychiatric diseases; this is known as the transmethylation hypothesis. Several speculative and yet untested hypotheses suggest that endogenous DMT is produced in the human brain and is involved in certain psychological and neurological states. DMT is naturally occurring in small amounts in rat brains, human cerebrospinal fluid, and other tissues of humans and other mammals. Further, mRNA for the enzyme necessary for the production of DMT, INMT, are expressed in the human cerebral cortex, choroid plexus, and pineal gland, suggesting an endogenous role in the human brain. In 2011, Nicholas Cozzi of the University of Wisconsin School of Medicine and Public Health, and three other researchers, concluded that INMT, an enzyme that is associated with the biosynthesis of DMT and endogenous hallucinogens is present in the non-human primate (rhesus macaque) pineal gland, retinal ganglion neurons, and spinal cord. Neurobiologist Andrew Gallimore suggested in 2013 that while DMT might not have a modern neural function, it may have been an ancestral neuromodulator once secreted in psychedelic concentrations during REM sleep, a function now lost.
Narrated by Jonathan Cullen, produced by Andy Paterson, directed by Patrick Forbes 22 September Fighting the G-Force, it looked at the Brooks Air Force Base in Texas; F-16 aircraft of the United States Air Force Thunderbirds; a G-force simulator on 30 May 1997, where a pilot experiences G-LOC; Major Mark Arlinghaus of the Thunderbirds; Captain Rick Forster, an F-16 instructor; Luke Air Force Base in Arizona, where F-16 pilots were trained; Major Rob Kesterson, an instructor with the 62nd Fighter Squadron; Lt Toby Brallier of the 62nd Fighter Squadron, who blacked out, but he was in a two-seat F-16 trainer; Holloman Air Force Base in New Mexico, where all USAF pilots learn about G-LOC, and are medically tested; Captain John Condojani and G-suits; a G-force centrifuge, rotating once every two seconds; pilots referred to G-LOC as 'doing the funky chicken'; to fly in an A-10, a pilot had to cope with 7.5G, and there were no exceptions; F-16 pilots had to cope with 9G; Captain Rick Fofi, a physical training officer with the USAF; women had been allowed to fly USAF fighter aircraft since 1993; Dr William Albery, chief of USAF aerospace medical research; Colonel James Dooley of flight motion effects at Brooks AFB in Texas, in the Armstrong Laboratory, named after Harry George Armstrong, known for the Armstrong limit; taller pilots were more susceptible to G-LOC; when the German Air Force inherited East German pilots, it discovered that the East German air force believed that G-LOC could be prevented by ruthless selection of pilots and better fitness preparation; Wing Commander Andreas Valentiner of the Luftwaffe Institute of Aviation Medicine; the German Air Force decided to ruthlessly select pilots by G-LOC in a centrifuge as well, before any training commenced - it was the only NATO air force to do this; Dr Brendan Godfrey, director of the Armstrong Laboratory; Captain Kelly Greene of Wright-Patterson Air Force Base in Ohio; Colonel Ron Hill, head of the Crew Systems Directorate; Finley Barfield, chief engineer of the F-16, and what became the Automatic Ground Collision Avoidance System, to avoid controlled flight into terrain (CFIT); Dr Paul Werchan of Brooks AFB; Dr Gene McCall of the United States Air Force Scientific Advisory Board; the Northrop Grumman RQ-4 Global Hawk, planned to first fly in late 1997. Narrated by Piers Gibbon, produced by Simon Berthon, directed by Mark Rubens, made by 3BM Television with The Learning Channel (TLC) 29 September The Iceberg Cometh, about the dangers of icebergs in the Atlantic Ocean; for every metre above surface, four metres are below; the icebergs are made of snow that fell half a million years ago; Greenland is as large as western Europe; icebergs can travel thirty miles a day; the International Ice Patrol was formed in 1914, and now checks half a million square miles; patrols take place three times a week from March to July in the Atlantic Marine Ecozone; glaciologist Peter Wadhams of the University of Cambridge; the North Greenland Ice Core Project (NGRIP) began in 1995. Produced by David Frank, directed by Cathy Rogers, made by RDF Television with the Discovery Channel 13 October Coma, on 4 June 1996 a 32-year-old woman was beaten unconscious in New York Central Park; she was one of four women beaten by 22-year-old John Royster, with the last, 62-year-old Evelyn Alvarez on Park Avenue, not surviving, and Royster was caught from a fingerprint, and was sentenced to life without parole in 1998; neurosurgeon Jamshid Ghajar; the Jamaica Hospital Medical Center, where a nine year old boy, Alex, had been hit by a car, and had severe head trauma, and had a head CT scan; the 'second accident' in the first week in hospital, where the brain swelled, and blocked the flow of blood; a tube was inserted into the brain, to release fluid from swelling, known as a ventriculostomy; the New York Hospital Pediatric ICU, now the Weill Cornell Medical Center; on day two, the eye pupils began to dilate, which can indicate brain swelling, and the intracranial pressure increased, until day three: by day twenty, Alex began to show greater responses, and by day 39, he was walking, and will make a good recovery; neurosurgeon Randall Chesnut, of Oregon, now at the University of Washington School of Medicine; Nicole Ward had a car accident, with a brain injury, but makes a good recovery, thanks to the ventriculostomy procedure; the International Conference on Recent Advances in Neurotraumatology (ICRAN) in early September 1996 at the University of Bologna in Rimini in north-east Italy, where new guidelines of the American Academy of Neurology would be disseminated, from work by the Colorado Medical Society in 1991. A US production, narrated by Piers Gibbon, produced by Paula Apsell, directed by Linda Garmon, made by Nova and WGBH. Shown on Nova on 7 October 1997 20 October Superhighway Robbery, an updated repeat 27 October Sun Storm, about geomagnetic storms, with Nicola Fox of the Heliophysics Science Division; Mike Lockwood (physicist); the March 1989 geomagnetic storm and Hydro-Québec's electricity transmission system; Telesat of Ottawa, and the High Altitude Observatory; a warning system for geomagnetic storms, the Cluster satellite network, was to be launched on 4 June 1996 on board Ariane flight V88, but the launch was a disaster; historical solar records at the Armagh Observatory showed how weather fluctuated with solar activity over the years, John Butler found a connection with Earth temperature; Brian Tinsley looked at electrical charge in clouds causing rain, found by aircraft of the National Center for Atmospheric Research (NCAR); Ernest Hildner of the Space Weather Prediction Center; North American Aerospace Defense Command (NORAD); Daniel N. Baker of the Laboratory for Atmospheric and Space Physics; the Advanced Composition Explorer, launched in August 1997, would detect the magnetic polarity of any solar winds. Narrated by Robin Ellis, directed by Dan Chambers, produced by Robert Eagle, made by Eagle & Eagle 3 November Natural Born Genius?, about inherited intelligence; the population geneticist Robert Plomin, who came to London in 1994; bioethicist Jonathan Glover; psychologist Camilla Benbow of Iowa State University, and the Study of Mathematically Precocious Youth; statistician Charles Spearman was the first to conduct research into general intelligence in 1904, and found that schoolchildren who were good at one academic subject were also good at other subjects and vice versa, and invented the term g factor (psychometrics), although Francis Galton had briefly looked at the subject; psychologist Ian Deary of the University of Edinburgh, where much research on intelligence has been conducted; Alfred Binet of France invented the intelligence test, so that low-scoring children could be given extra help; cognitive psychologist Michael Howe of the University of Exeter believed that the 11-plus exams in England, for grammar school entrance, could possibly label children; much educational testing took place in the US, as the government believed in it, by the Educational Testing Service (ETS); psychologist Stephen J. Ceci disputed reading cast-iron outcomes of individual intelligence tests, but nonetheless believed that general intelligence could be predicted across a population as a whole; Chris Allander of the Army School of Recruiting; Michael Howe conducted environmental education research of parental support, and if that was as much a factor as genetic or innate ability - environmental educational research largely ignored any genetic component, which Robert Plomin dismissed; psychologist Sandra Scarr had conducted much research on adopted children, which largely and conclusively proved the case for genetically inherited intelligence and abilities - and she believed that you could only teach subjects to children of whom had enough capability; Robert Plomin's wife, psychologist Judith Dunn, and varying intelligence of children within individual families; identical twins raised apart had identical IQ scores; psychologist Thalia C. Eley of the Institute of Psychiatry, Psychology and Neuroscience; from Robert Plomin's exhaustive adoption genetic studies, he finds a genetic link. Narrated by Barbara Flynn, produced by Rosalind Arden, directed by David Cresswell, made by John Gau Productions. John Gau had made Triumph of the Nerds the year before 10 November Losing It, about the persistence of sportspeople in the face of adversity; Steve Backley, javelin thrower gained three world records and was European champion in 1990 at the age of 21, but at the 1991 World Championships in Athletics in Tokyo, he didn't get past the qualifying round, where he had to throw 82m but he could only manage 78m; a fortnight later he threw 91m, gaining the British and Commonwealth records; mental strength is often the difference between success and failure; Doug Sanders, the American golfer, missed a straightforward put at the 1970 British Open; Sally Gunnell at the 1992 Olympics; sports psychologist Dave Collins (a former Royal Marine); footballer Lee Chapman who suffered a loss of confidence in 1982; Sally Gunnell, despite feeling intensely nervous before the final on 19 August of the 1993 World Championships in Athletics in Stuttgart, came first and broke the world record; Scottish golfer Sam Torrance and mental preparation for the zone; cricketer Michael Atherton; tennis player Mark Cox; neuroscientist Susan Greenfield, Baroness Greenfield, and alpha waves or alpha rhythm; banishing negative thoughts; Paul Holmes, sports psychologist of the Great Britain Pistol Squad (run by British Shooting since 2007); total mental absorption, denoted by alpha wave brain activity on an ECG, appeared to strongly help success; psychologist David Milner. Narrated by sports commentator Brian Moore, produced by Geoff Deehan, made by Union Pictures 17 November The Day the Earth Was Hit, the Tunguska event on 30 June 1908; David Morrison (astrophysicist) of NASA Ames; Duncan Steel of The Spaceguard Foundation; physicist Edward Teller; Russian mineralogist Leonid Kulik lead the investigation in 1927; the Tunguska explosion had the strength of a 15 megatonne nuclear explosion; astrophysicist Victor Clube and Bill Napier of Armagh Observatory; scientists from Tomsk State University visit Vanavara (rural locality) in the Siberian summer; the 1945 nuclear explosions had similarities in explosive effect to the Tunguska event; Benny Peiser; the Beta Taurids meteor shower; geochemist Evgeny Kolesnikov of Moscow University; tests at Sandia National Laboratories by Mark Boslough; astronomer Eleanor F. Helin of JPL, who worked on the Near-Earth Asteroid Tracking programme. Narrated by Anthony Hyde, produced by Simon Welfare, directed by Stephen White, made by Granite Productions 24 November When Pigs Ruled the World, about the species that survived the extinction event 250 million years ago, to give rise to mammals; Roger Smith of the South African Museum in the Karroo desert; Scottish paleontologist Mike Benton of the University of Bristol; Peter Ward (paleontologist) of the University of Washington; around 1977 a farmer found a strange footprint, made by a therapsid, the ancestor of mammals, in the Guadalupian part of the middle Permian; biologist Colin Tudge, and how large genetic variety was needed for rapid natural selection to occur, to go from sauropsids to synapsids; animatronics technician Neill Gorton would develop a working moving model; the Moschops plant eater, the more dangerous carnivore Anteosaurus, and the slower Lystrosaurus; paleontologists did not know whether therapsids laid eggs, or have birth to live animals; nasal concha bones; the Permian–Triassic extinction event, 252 million years ago, which scientists did not know the direct cause, and had taken place over 100,000 years; Pangaea was formed 350 million years ago; Tony Hallam of the University of Birmingham, and the events in the Triassic; due the extinction event, Lystrosaurus became much greater in number, as its predators had become extinct; small reptiles evolved into the dinosaurs, and Lystrosaurus evolved into rodents; loss of species was being counted on Madagascar; conservationist Joanna Durbin (now of the Climate, Community & Biodiversity Alliance) and the population of Lemur monkeys on Madagascar; Colin Tudge believed that mass extinctions were integral to evolution; Lystrosaurus lasted for ten million years. Narrated by Roger Allam, produced by Joanne Reay, directed by Howard Reay, made by The Mission, with the Discovery Channel 1 December Mindreaders, about autistic traits; Simon Baron Cohen at Cambridge; Temple Grandin in east Colorado; experimental psychologist Alison Gopnik of the University of California, Berkeley; the Sally–Anne test; Helen Tager-Flusberg, and Williams syndrome; Nancy Etcoff of Harvard Medical School; Phineas Gage; neurologist Robert T. Knight of UC Berkeley; Turner syndrome, where females miss the other X chromosome, and have autistic characteristics; David Skuse of the UCL Great Ormond Street Institute of Child Health found that if this X chromosome originated from the mother, the chances of autistic characteristics were much higher; female brains were typically more attuned to faces than male brains; the book An Anthropologist on Mars. Narrated by British actor Bernard Hill, produced by John Wyver, directed by Jeremy Taylor, made by Illuminations Productions. The female actress was Zoe Margolis, later known for Girl with a One-Track Mind 15 December The Conspiracy of Science, about biotechnology companies in Boston (US); David Kent of Genzyme; the Economic Espionage Act of 1996; the murder of Tsunao Saitoh, and his daughter, in May 1996; Steven Rosenberg of the National Cancer Institute; David Blumenthal of Massachusetts General Hospital; a study by Sandoz (now Novartis) into calcium channel blockers, such as felodipine, by Curt Furberg; full disclosure, or lack of any, of known adverse effects remains a greatly controversial subject. Narrated by Neil Pearson, produced by Geoff Deehan, directed by Tim Shawcross, made by Union Pictures with The Learning Channel (TLC) 22 December Moscow, We Have a Problem, about the Mir EO-23 collision in 1997; Mir had a fire on 24 February 1997; Michael Foale travelled to Mir in May 1997 on Atlantis; the father of Michael Foale was an RAF Meteor pilot; Mir had been in orbit since February 1987, 248 miles above the Earth; the shuttle was docked with Mir for five days; cosmonaut Konstantin Feoktistov, designer of Mir; Mir was only meant to last three years; the oxygen that the cosmonauts breathe originates from the crew's urine; on 24 June 1997, due to saving money on a radar system, a manual docking of the Progress resupply vehicle took place, where the Progress vehicle hit a module, side on; NASA never conducted docking without radar, in such a possibly dangerous way; Vladimir Solovyov (cosmonaut), director of the RKA Mission Control Center; cosmonaut Vasily Tsibliyev accidentally disconnected an important power cable; two more cosmonauts arrived to mend the module on 14 August 1997; the two previous cosmonauts returned to Earth; on 15 September 1997, Mir came close to a NASA satellite; the International Space Station would be launched in June 1998, to cost £20bn; Frank L. Culbertson Jr, director from 1995 of the Shuttle–Mir program; Michael Foale returned to Earth on 27 September 1997 after 142 days, on the Atlantis shuttle; cosmonaut Sergei Krikalev. Narrated by Haydn Gwynne, produced by Julian Ware, directed by Patrick Fleming, made by ITN Factual
This process, referred to as peptide stapling, uses non-natural amino acids to facilitate macrocyclization by ring-closing olefin metathesis. In this case, a stapled BH3 helix was identified which specifically activates the mitochondrial apoptotic pathway by antagonizing the sequestration of BH3-only proteins by anti-apoptotic proteins (e.g. Bcl-2, see also intrinsic and extrinsic inducers of the apoptosis). This molecule suppressed growth of human leukemia in a mouse xenograft model. Also in 2004, Harran and co-workers reported a dimeric small molecule that mimics the proapoptotic protein Smac (see mitochondrial regulation in apoptosis). This molecule mimics the N-terminal linear motif Ala-Val-Pro-Ile. Uniquely, the dimeric structure of this peptidomimetic led to a marked increase in activity over an analogous monomer. This binding cooperativity results from the molecule's ability to also mimic the homodimeric structure of Smac, which is functionally important for reactivating caspases. Smac mimetics of this type can sensitize an array of non-small-cell lung cancer cells to conventional chemotherapeutics (e.g. Gemcitabine, Vinorelbine) both in vitro and in mouse xenograft models. Heterocycles are often used to mimic the amide bond of peptides. Thiazoles, for example, are found in naturally occurring peptides and used by researchers to mimic the amide bond of peptides.
== Veterinary uses == In the US, clomipramine is only licensed to treat separation anxiety in dogs for which it is sold under the brand name Clomicalm. It has proven effective in the treatment of obsessive–compulsive disorders in cats and dogs. In dogs, it has also demonstrated similar efficacy to fluoxetine in treating tail chasing. In dogs some evidence suggests its efficacy in treating noise phobia. Clomipramine has also demonstrated efficacy in treating urine spraying in cats. Various studies have been done on the effects of clomipramine on cats to reduce urine spraying/marking behavior. It has been shown to be able to reduce this behavior by up to 75% in a trial period of four weeks. Clomipramine has the side effect of inhibiting thyroid peroxidase and inhibiting the uptake of iodide.
Sources: en.wikipedia.org
Catalase is used in the food industry for removing hydrogen peroxide from milk prior to cheese production. Another use is in food wrappers, where it prevents food from oxidizing. Catalase is also used in the textile industry, removing hydrogen peroxide from fabrics to make sure the material is peroxide-free. A minor use is in contact lens hygiene – a few lens-cleaning products disinfect the lens using a hydrogen peroxide solution; a solution containing catalase is then used to decompose the hydrogen peroxide before the lens is used again.
government experiment that infected hundreds of Guatemalans with syphilis". A previous suit against the United States government was dismissed in 2011 for the Guatemala syphilis experiments when a judge determined that the U.S. government could not be held liable for actions committed outside of the U.S. An experiment was conducted by Vanderbilt University in the 1940s where they gave 800 pregnant women radioactive iron, 751 of which were pills, without their consent. In a 1969 article published in the American Journal of Epidemiology, it was estimated that three children had died from the experiment.
monoclonal Describing cells, proteins, or molecules descended or derived from a single clone (i.e. from the same genome or genetic lineage) or made in response to a single unique compound. Monoclonal antibodies are raised against only one antigen or can only recognize one unique epitope on the same antigen. Similarly, the cells of some tissues and neoplasms may be described as monoclonal if they are all the asexual progeny of one original parent cell. Contrast polyclonal.
=== Recreational use === Although some studies have reported flupirtine has no addictive properties, there was suggestion that it may possess some miuse potential and liability. There were at least two registered cases of flupirtine misuse. Drug tolerance does not develop in most cases, but has individually occurred. Flupirtine was reported as a novel designer drug in 2025. The effects of flupirtine have been said to be very difficult to describe. They have been reported to include "strong helicopter-like effects at high doses" causing users to have to "walk leaning against a wall", dissociative effects, feelings of euphoria throughout the body, and a very light buzzing sensation. Some have compared it to mephedrone, while others have described the physical bodily sensations as similar to those of MDMA and other entactogens. The drug is said to be able to produce psychosis and mania as adverse effects and to do so more readily than cathinone stimulants. The euphoria produced by flupirtine is said to last 40 to 60 minutes, whereas other effects last all day. The effects are said to convert after 2 hours from stimulant or euphoriant effects into a kind of nootropic effect that affects thinking. The drug is frequently used to enhance the effects of other recreational drugs.
== Compartmentalization and genome integration == Hypercycle theory proposed that hypercycles are not the final state of organization, and further development of more complicated systems is possible by enveloping the hypercycle in some kind of membrane. After evolution of compartments, a genome integration of the hypercycle can proceed by linking its members into a single chain, which forms a precursor of a genome. After that, the whole individualized and compartmentalized hypercycle can behave like a simple self-replicating entity. Compartmentalization provides some advantages for a system that has already established a linkage between units. Without compartments, genome integration would boost competition by limiting space and resources. Moreover, adaptive evolution requires the package of transmissible information for advantageous mutations in order not to aid less-efficient copies of the gene. The first advantage is that it maintains a high local concentration of molecules, which helps to locally increase the rate of synthesis. Secondly, it keeps the effect of mutations local, while at the same time affecting the whole compartment. This favours preservation of beneficial mutations, because it prevents them from spreading away. At the same time, harmful mutations cannot pollute the entire system if they are enclosed by the membrane. Instead, only the contaminated compartment is destroyed, without affecting other compartments. In that way, compartmentalization allows for selection for genotypic mutations.
Sources: en.wikipedia.org
It is a synthetic fifteen-amino-acid peptide whose sequence matches part of a protein found in human gastric juice. It is made by chemical synthesis, not purified from tissue. The name derives from an early fragment label, not from a molecular weight.
The sequence corresponds to a segment of a naturally occurring gastric protein, so related sequence material exists in the body. The peptide itself as sold and studied is a laboratory-synthesized product. Whether an identical free peptide circulates naturally is not established.
No major regulatory agency has approved it as a medicine for any indication. It appears in research supply channels and, in some jurisdictions, in compounded preparations. Clinical use therefore sits outside standard approved-product pathways, and regulatory status varies by country.
The letters BPC stand for body protection compound. The number 157 refers to a specific fragment designation from early work on gastric proteins. The full name is a label for a synthetic fifteen-amino-acid peptide rather than a naturally isolated drug.