Everything below concerns gastric juice protein. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2025-11-28. Numbers and descriptions here follow the published literature rather than marketing material.
Outside laboratory supply channels, the peptide is sold as a research chemical, a category that carries no requirement to demonstrate purity, identity, or freedom from contamination. Because it is not an approved medicine, products labeled BPC-157 sit in a regulatory gap in many countries, and actual content may differ from the label. Sports organizations list it among prohibited substances, so its presence in an athlete's sample can produce a doping finding regardless of how the material was obtained.
BPC-157 is a synthetic peptide of fifteen amino acids, written as GEPPPGKPADDAGLV, whose sequence matches part of a larger protein identified in human gastric juice. That parent protein was described in stomach-secretion research, and the fifteen-residue fragment was named body protection compound, which gives the peptide its common label. Material used in experiments is produced by solid-phase peptide synthesis rather than extracted from tissue. The reported molecular weight is about 1419 daltons, and the chain contains several proline residues, a feature that appears in discussions of its resistance to enzymatic breakdown.
Most published findings come from rodent models, where the peptide has been examined in wound-healing, gastrointestinal-lesion, tendon, and vascular-injury preparations. A smaller number of early human studies have been reported, chiefly in inflammatory bowel conditions, but the public record is short and has not led to marketing approval in the United States or the European Union. Reviewers therefore classify the compound as investigational, and whether animal results carry over to people remains an open question rather than a settled one.
Dry powder is generally stored at low temperature, with minus twenty degrees Celsius or colder advised for extended retention. Reconstituted solutions are less stable than the solid form and are normally kept cold and shielded from repeated freeze-thaw cycles. Light exposure is avoided because some peptides degrade under ultraviolet radiation. The exact rate of degradation depends on concentration, pH, and the presence of salts, so a single shelf life does not apply to every preparation. Reported stability figures should be read as indicative of typical handling rather than as universal constants.
Confirmation of identity and purity relies on standard peptide analysis techniques. Reverse-phase high-performance liquid chromatography separates the peptide from related impurities and serves as the most common purity assay. Mass spectrometry, often coupled to that chromatography step, provides an accurate molecular mass that can be matched against the expected value. Amino acid analysis or sequencing can be added for further confirmation. Because short peptides can be produced by different synthetic routes, laboratories usually report both a chromatographic purity percentage and a mass confirmation rather than a single figure.
| Property | Value | Notes |
|---|---|---|
| Origin | Fragment of a protein found in human gastric juice | Sequence corresponds to a fifteen-residue portion of the parent protein |
| Sequence | GEPPPGKPADDAGLV | Single linear chain, fifteen amino acids |
| Reported molecular weight | About 1419 daltons | Value quoted consistently in supplier and review literature |
| Regulatory status | Not an approved human medicine in the US or EU | Handled and sold as a research chemical |
| Sports status | Listed as prohibited | Falls under non-approved-substance categories in anti-doping codes |
Common synonyms in catalogs include pentadecapeptide BPC 157, BPC157, and the full sequence name. A CAS registry number in the 137525-51-0 range is frequently listed, though the assignment should be verified against the supplier certificate of analysis. The name itself is not a pharmacopoeial designation, and there is no standardized international nonproprietary name. Distinguishing genuine material from related fragments generally requires mass spectrometry, since several truncated sequences share similar chromatographic behavior.
BPC-157 is a synthetic pentadecapeptide whose sequence is commonly given as Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val. It is described in the literature as a fragment of a larger protein found in human gastric juice, referred to as body protection compound. The peptide was first characterized in the early 1990s by a research group in Zagreb, Croatia. Its molecular formula is C62H98N16O22 and its monoisotopic mass is approximately 1419 daltons.
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.
Most published reports describe experiments in rodents rather than in people. These studies examine outcomes in tendons, ligaments, bone, stomach lining, and intestinal tissue. In rat and mouse models, a frequently reported effect is faster healing or reduced damage. Sample sizes are usually small, and a substantial share of the work originates from a small number of research groups. Independent replication is limited, so how far the findings extend to humans remains an open question.
==== Taiwan ==== In Taiwanese cuisine, they are called dōngfěn (Chinese: 冬粉; lit. 'winter flour'). They are a versatile ingredient used in soups, stir-fries, hot pots, and street food. A popular Taiwanese dish featuring glass noodles is bah-oân (肉圓), a translucent, doughy snack filled with meat and vegetables, often including glass noodles in the filling for added texture. Glass noodles are also a staple in Taiwanese-style lu wei (滷味), a braised food stall dish where various ingredients, including glass noodles, are simmered in a spiced soy-based broth and served hot or cold. In Hakka cuisine, a traditional preparation called kè jīa fěn sī (客家粉絲) involves stir-frying glass noodles with dried shrimp, mushrooms, pork, and preserved vegetables. Glass noodles are also often included in festive banquet dishes, such as steamed seafood casseroles and Buddha Jumps Over the Wall (佛跳牆), where they absorb rich flavours from broths and other ingredients. Taiwanese hot pots (火鍋) frequently include glass noodles as an essential add-in that soaks up the broth while maintaining a chewy texture, especially in spicy or medicinal broths popular in winter.
== Diagnosis == Kwashiorkor, or edematous malnutrition, like many other malnutrition diseases, is indirectly assessed using anthropometry. Kwashiorkor is a subtype of severe acute malnutrition (SAM) characterized by bilateral peripheral pitting edema. According to the World Health Organization, the SAM diagnosis parameters are a "mid-upper arm circumference (MUAC) of < 115 mm, weight-for-height/length Z-score (WHZ) of < -3Z and nutritional edema or any combination of these parameters." Additional clinical findings on physical exam include marked muscle atrophy, abdominal distension, dermatitis, and hepatomegaly. WHO criteria for clinical assessment of malnutrition are based on the degree of wasting (MUAC), stunting (weight-for-height Z-score), and the presence of edema (mild to severe). In addition to anthropometric measures, laboratory tests can be critical for diagnosing kwashiorkor. Low serum albumin levels (hypoalbuminemia) are a hallmark of protein deficiency, and elevated liver enzymes may indicate liver dysfunction. Electrolyte imbalances and blood tests may also be used to assess the degree of organ involvement and complications. Specifically in children, severe malnutrition, such as kwashiorkor, can lead to notable changes in brain function and behavior. Children with kwashiorkor tend to be irritable and may develop cerebral atrophy, whereas those with severe wasting frequently show apathy, reduced movement, and speech delays. These neurological and behavioral changes are key factors in the clinical assessment of malnutrition.
TGFK-09SD, or TGFK09SD, is a serotonin 5-HT1A receptor agonist which is or was under development for the treatment of female sexual dysfunction but was never marketed. It is taken orally. The drug was developed by Fabre-Kramer Pharmaceuticals. As of January 2016, it is in phase 2 clinical trials. There have been no further updates on the development of the drug since then. The chemical structure of TGFK-09SD does not yet appear to have been disclosed.
The letter was seized on by the Committee, who immediately released £4,000 to begin development. They petitioned Hugh Dowding, the Air Member for Supply and Research, to ask the Treasury for another £10,000. Dowding was extremely impressed with the concept, but demanded a practical demonstration before further funding was released. Wilkins suggested using the new 10 kW, 49.8 m BBC Borough Hill shortwave station in Daventry, Northamptonshire as a suitable ad hoc transmitter. The receiver and an oscilloscope were placed in a delivery van the RRS used for measuring radio reception around the countryside. On 26 February 1935, they parked the van in a field near Upper Stowe and connected it to wire antennas stretched across the field on top of wooden poles. A Handley Page Heyford made four passes over the area, producing clearly notable effects on the CRT display on three of the passes. A memorial stone was placed at the site of the test. Observing the test were Watt, Wilkins, and several other members of the RRS team, along with Rowe representing the Tizard Committee. Watt was so impressed he later claimed to have exclaimed: "Britain has become an island again!" Rowe and Dowding were equally impressed. It was at this point that Watt's previous agitation over development became important; NPL management remained uninterested in practical development of the concept, and was happy to allow the Air Ministry to take over the team.
Sources: en.wikipedia.org
== Markers == Myoepithelial cells are true epithelial cells positive for keratins, not to be confused with myofibroblasts which are true mesenchymal cells positive for vimentin. These cells are generally positive for alpha smooth muscle actin (αSMA), cytokeratin 5/6 and other high molecular weight cytokeratins, p63 and caldesmon. Myoepithelial cells are stellate in shape and are also known as basket cells. They lie between the basement membrane and glandular epithelium. Each cell consists of a cell body from which 4-8 processes radiate and embrace the secretory unit. Myoepithelial cells have contractile functions. They help in expelling secretions from the lumen of secretory units and facilitate the movement of saliva in salivary ducts.
The enzyme characterised from liver converts the riboside, nicotinamide riboside, to the ribonucleotide, nicotinamide mononucleotide, by transferring a phosphate group from the cofactor, adenosine triphosphate (ATP), which is converted to adenosine diphosphate (ADP). This reaction is part of one of the biosynthesis pathways for the coenzyme, nicotinamide adenine dinucleotide. The other major one instead involves the enzyme nicotinamide phosphoribosyltransferase. This enzyme is a transferase, specifically one transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor. The systematic name of this enzyme class is ATP:N-ribosylnicotinamide 5'-phosphotransferase. This enzyme is also called ribosylnicotinamide kinase (phosphorylating).
(ASAXAA/ ASAp)(Ttc) where ASAp refers to the area of the entire fused protein that is available to the solvent that is being used, ASAXAA refers to the area of the guest residue on the ELP that is available to the solvent, and Ttc is the transition temperature that is unique to the amino acid. Summing up the contribution of each potential guest residue (XAA) will yield an SI index that is directly proportional to ΔTt,fusion. It was found that the amino acids that are charged under a physiological pH of 7.4 have the greatest impact on the overall SI of a fused protein. This is due to the fact that they are more accessible to water-containing solvents, thereby increasing the ASAXAA and also have high Ttc values. Hence, knowledge of the transition temperature of a fused protein is highly dependent on the presence of these charged residues.
Many different amphibians are neotenic, evolved to retain larval traits (such as external gills) as part of an aquatic lifestyle. For example, Ambystoma mexicanum, an extant salamander, is difficult to tell apart from the Permian temnospondyl Branchiosaurus.
=== Ber–Bla === Paul Berg (1926–2023), American biochemist known for research on nucleic acids, especially recombinant DNA, 1980 Nobel Prize in Chemistry Friedrich Bergius (1884–1949), German chemist known for known for production of synthetic fuel from coal, 1931 Nobel Prize in Chemistry Helen M. Berman (born 1943), American chemist who worked on structural analysis of protein-nucleic acid complexes Marcellin Berthelot (1827–1907), French chemist, a prominent anti-vitalist who synthesized many organic compounds from inorganic substances, and developed thermochemistry Claude Louis Berthollet (1748–1822), French chemist who developed the theory of chemical equilibria Carolyn R. Bertozzi (born 1966) American chemist who studies chemical reactions compatible with living systems ("bioorthogonal chemistry"), 2022 Nobel Prize in Chemistry Guy Bertrand (born 1952) French chemist working on carbenes, nitrenes, phosphinidenes, radicals and biradicals Jöns Jakob Berzelius (1779–1848), Swedish chemist who discovered several elements Johannes Martin Bijvoet (1892–1980), Dutch chemist and crystallographer who determined the absolute configuration of sodium rubidium tartrate Leonora Bilger (1893–1975), American chemist who studied nitrogenous compounds Katherine Bitting (1869–1937), Canadian and American food chemist for the United States Department of Agriculture and the National Canners Association Joseph Black (1728–1799), British chemist known for discoveries of magnesium, latent heat, specific heat, and carbon dioxide
Sources: en.wikipedia.org
It is not approved for human use in the United States or the European Union. Clinical material has been studied in a small number of early trials, mainly for inflammatory bowel conditions, and the compound remains investigational. Regulators treat marketed products as unapproved rather than as authorized drugs.
The peptide was named after a protein fraction found in human gastric juice, and the shorter form was called body protection compound. That phrase was shortened to the abbreviation BPC. The number 157 refers to a laboratory designation used in the original isolation work.
Its sequence corresponds to a segment of a protein present in gastric secretions, but the material supplied for research is made synthetically. No commercial product is purified from human or animal tissue. The synthetic route is used because it gives a defined chain length and a reproducible sequence.
The lyophilized powder is normally kept at minus twenty degrees Celsius or colder. Solutions are held at refrigerator temperature or below and protected from light. Repeated freezing and thawing is avoided because it can promote aggregation or loss of activity.