This is a working overview of BPC-157, written for readers who want more than a one-paragraph summary but less than a textbook.
This page was last updated on 2026-02-09 and is reviewed periodically as new material appears.
Early work on this family of molecules examined fractions of human gastric juice, where a larger protein was reported to protect gastrointestinal tissue in animal models. BPC 157 was designed as a shorter, more stable fragment of that protein and then studied on its own. The peptide itself is not a normal dietary component and is not present in the human body in meaningful quantities. Descriptions of its origin therefore refer to the research lineage of a laboratory molecule rather than to an endogenous or nutritional substance.
The sequence contains an unusually high proportion of proline and glycine, which limits regular secondary structure and contributes to solubility in aqueous media. The compound dissolves readily in water and in normal saline. Because it is a peptide, digestive enzymes are expected to break it down if it is swallowed, a consideration that influences the routes of administration used in animal experiments. Detailed conformational data remain limited, and published structural models are largely computational.
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.
| Property | Value | Notes |
|---|---|---|
| Molecular weight | About 1419.5 Da | Calculated from the fifteen-residue sequence |
| Residue count | 15 amino acids | Single-letter sequence GEPPPGKPADDAGLV |
| Compound class | Synthetic peptide | Produced by solid-phase synthesis |
| Synonyms | BPC 157; pentadecapeptide BPC 157 | Naming varies across suppliers and papers |
| Appearance | White to off-white powder | Typical form of the lyophilized material |
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.
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.
Supplied material is typically a lyophilized white to off-white powder. The peptide is freely soluble in water and in common aqueous buffers, which allows it to be handled as a stock solution. Because the sequence contains no cysteine, disulfide cross-linking is not a route of degradation. The absence of aromatic residues means ultraviolet absorbance at 280 nm is minimal, so quantification usually relies on peptide bond absorbance near 214 nm or on amino acid analysis.
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.
The "inert" or noble gas elements (helium, neon, argon, krypton, xenon and radon) are composed of lone atoms as their smallest discrete unit, but the other isolated chemical elements consist of either molecules or networks of atoms bonded to each other in some way. Identifiable molecules compose familiar substances such as water, air, and many organic compounds like alcohol, sugar, gasoline, and the various pharmaceuticals. However, not all substances or chemical compounds consist of discrete molecules, and indeed most of the solid substances that make up the solid crust, mantle, and core of the Earth are chemical compounds without molecules. These other types of substances, such as ionic compounds and network solids, are organized in such a way as to lack the existence of identifiable molecules per se. Instead, these substances are discussed in terms of formula units or unit cells as the smallest repeating structure within the substance. Examples of such substances are mineral salts (such as table salt), solids like carbon and diamond, metals, and familiar silica and silicate minerals such as quartz and granite. One of the main characteristics of a molecule is its geometry often called its structure. While the structure of diatomic, triatomic or tetra-atomic molecules may be trivial, (linear, angular pyramidal etc.) the structure of polyatomic molecules, that are constituted of more than six atoms (of several elements) can be crucial for its chemical nature.
== Bonding == Some models of bonding for desmosines, created through the study of bovine ligament elastin, suggest a combination of desmosine and secondary cross-linking to bind together peptide chains. This model has desmosine bonding near an alanine on the peptide chain, then to 3 other amino acids on the 2 peptide chains, despite being able to bond to up to 4 chains. It has been suggested that the secondary cross-linking occurs with either desmosine or lysinonorleucine, which maintains an alpha helix conformation in alanine rich sections on peptides. Both isodesmosine and desmosine can have similar bonding sites in elastin, though it rarely shown this way in nature. They more often will appear in close proximity to each other on the peptide chain.
Barry Windsor-Smith, who had come to prominence illustrating Marvel's Conan the Barbarian series, collaborated with Claremont for the "Wounded Wolf" story that was published as Uncanny X-Men #205 (May 1986), focusing entirely on Wolverine. The story introduced a new adversary for Wolverine, Lady Deathstrike. The "Mutant Massacre" story arc of 1986 brought Sabretooth into conflict with the X-Men and particularly Wolverine. Byrne had previously designed Sabretooth as an enemy of the martial artist superhero Iron Fist in Iron Fist #14 (August 1977), written by Claremont. Sabretooth's face was based on a preliminary and unused drawing Byrne had proposed for Wolverine; he became Wolverine's archenemy. Marvel launched an ongoing Wolverine title written by Claremont with art by John Buscema in November 1988. In the late 1980s, Wolverine featured in self-contained crossover stories with two other characters: Spider-Man, in Spider-Man versus Wolverine (1987), by Christopher Priest and M.D. Bright, and Nick Fury, in Wolverine/Nick Fury: The Scorpio Connection (1989), written by Archie Goodwin with art by Howard Chaykin.
Three prime untranslated regions (3′UTRs) of messenger RNAs (mRNAs) often contain regulatory sequences that post-transcriptionally influence gene expression. Such 3′-UTRs often contain both binding sites for microRNAs (miRNAs) as well as for regulatory proteins. By binding to specific sites within the 3′-UTR, miRNAs can decrease gene expression of various mRNAs by either inhibiting translation or directly causing degradation of the transcript. The 3′-UTR also may have silencer regions that bind repressor proteins that inhibit the expression of a mRNA. The 3′-UTR often contains microRNA response elements (MREs). MREs are sequences to which miRNAs bind. These are prevalent motifs within 3′-UTRs. Among all regulatory motifs within the 3′-UTRs (e.g. including silencer regions), MREs make up about half of the motifs. As of 2014, the miRBase web site, an archive of miRNA sequences and annotations, listed 28,645 entries in 233 biologic species. Of these, 1,881 miRNAs were in annotated human miRNA loci. miRNAs were predicted to have an average of about four hundred target mRNAs (affecting expression of several hundred genes). Friedman et al. estimate that >45,000 miRNA target sites within human mRNA 3′UTRs are conserved above background levels, and >60% of human protein-coding genes have been under selective pressure to maintain pairing to miRNAs. Direct experiments show that a single miRNA can reduce the stability of hundreds of unique mRNAs.
== Early life and education == De Duve was born of an estate agent Alphonse de Duve and wife Madeleine Pungs in the village of Thames Ditton, near London. His parents fled Belgium at the outbreak of the First World War. After the war in 1920, at age three, he and his family returned to Belgium. He was a precocious boy, always the best student (primus perpetuus as he recalled) in school, except for one year when he was pronounced "out of competition" to give chance to other students. He was educated by the Jesuits at Onze-Lieve-Vrouwinstituut in Antwerp, before studying at the Catholic University of Louvain in 1934. He wanted to specialize in endocrinology and joined the laboratory of the Belgian physiologist Joseph P. Bouckaert, whose primary interest was one insulin. During his last year at medical school in 1940, the Germans invaded Belgium. He was drafted to the Belgian army, and posted in southern France as medical officer. There, he was almost immediately taken as prisoner of war by Germans. His ability to speak fluent German and Flemish helped him outwit his captors. He escaped back to Belgium in an adventure he later described as "more comical than heroic". He immediately continued his medical course, and obtained his MD in 1941 from Leuven. After graduation, de Duve continued his primary research on insulin and its role in glucose metabolism. He (with Earl Sutherland) made an initial discovery that a commercial preparation of insulin was contaminated with another pancreatic hormone, the insulin antagonist glucagon.
Sources: en.wikipedia.org
MNA Ali Pervaiz was appointed as a Minister of State with the allocated portfolios of Finance & Revenue, with an additional portfolio of the Power Division on 17 May. Foreign Minister Ishaq Dar was appointed Deputy Prime Minister of Pakistan through a notification from the Cabinet Division, this after the post had remained vacant for the past eleven years. Arifa Noor speculated in Dawn this was the result of Nawaz Sharif planning to reassert himself due to Ishaq Dar's "proximity" with Nawaz.
Corals predominantly reproduce sexually. About 25% of hermatypic corals (reef-building stony corals) form single-sex (gonochoristic) colonies, while the rest are hermaphroditic. It is estimated more than 67% of coral are simultaneous hermaphrodites.
Reproductive disorders are thought to be caused by nutritional deficiencies, particularly zinc, iron, folate, and selenium deficiencies in coeliac disease. Coeliac disease often affects the liver, causing increased transaminase levels. This elevation of transaminases seen in coeliac disease is known as coeliac hepatitis. Mildly increased transaminases without symptoms and without other possible factors such as autoimmune or viruses that could cause liver abnormalities, characterise coeliac hepatitis. In patients with persistent symptoms despite treatments for coeliac disease, IgE-mediated allergic diseases, including food allergy, allergic rhinitis, and asthma, should be considered in the differential diagnosis, as they may coexist with celiac disease. Due to the systemic nature of coeliac disease and its potential to affect any organ, there are many rarer presentations of coeliac disease, some of which have an unclear relationship to the disease. Some of these more uncommon manifestations include peripheral neuropathy, epilepsy, psoriasis, recurrent aphthous stomatitis, pericardial effusion, and Lane-Hamilton syndrome.
== History == As initially described by Edel, the treatment objective was to increase the zone of keratinized tissue. Others, including Broome and Taggert and Donn also described the use of SECT grafts for increasing the zone of keratinized tissue. Of the various ways of preparing the graft recipient site, Edel described using two vertical incisions, mesial and distal to the teeth at which the zone of keratinized tissue was intended to be widened.
Chocolate is a food made from roasted and ground cocoa beans. It can be a liquid, solid, or paste. It is eaten on its own and used to flavor other foods. Cocoa beans are the processed seeds of the cacao tree (Theobroma cacao). They are usually fermented to develop the flavor, then dried, cleaned, and roasted. The shell is removed to reveal nibs, which are ground to chocolate liquor (unadulterated chocolate in rough form.) The liquor can be further processed into cocoa butter and cocoa powder, or shaped and sold as unsweetened baking chocolate. By adding sugar, sweetened chocolates are produced, which can be sold simply as dark chocolate, or, with the addition of milk, can be made into milk chocolate. Making chocolate with only cocoa butter and milk produces white chocolate. Chocolate is one of the most popular food types and flavors in the world, and many foodstuffs include chocolate, particularly desserts, including ice creams, cakes, mousse, and cookies. Many candies are filled with or coated with sweetened chocolate. Chocolate bars, either made of solid chocolate or other ingredients coated in chocolate, are eaten as snacks. Gifts of chocolate molded into different shapes (such as eggs, hearts, and coins) are traditional on certain holidays, including Christmas, Easter, Valentine's Day, Hanukkah and Eid al-Fitr. Chocolate is also used in cold and hot beverages, such as chocolate milk, hot chocolate and chocolate liqueur. The cacao tree was first used as a source for food in what is today Ecuador at least 5,300 years ago.
Sources: en.wikipedia.org
During the First World War, by the end of April 1915, six full Territorial divisions had been deployed into the fight. Between the wars the Territorial Army (as it was now called) was re-established to be the sole means of expansion in future wars, but it was smaller than before and poorly resourced. Yet eight TA divisions were deployed before the fall of France. After the Second World War, the TA was reconstituted with ten divisions, but then successively cut until rebuilding began in 1970, with numbers peaking at nearly 73,000. It was then run down again despite a major role in the Iraq and Afghanistan operations, bottoming at an estimated 14,000. From 2011 that trend was reversed and a new target of 30,000 trained manpower set with resourcing for training, equipment and the emphasis restored to roles for formed units and sub-units.
=== China (mainland) === The National Administration of Traditional Chinese Medicine was created in 1949, which then absorbed existing TCM management in 1986 with major changes in 1998. China's National People's Congress Standing Committee passed the country's first law on TCM in 2016, which came into effect on 1 July 2017. The new law standardized TCM certifications by requiring TCM practitioners to (i) pass exams administered by provincial-level TCM authorities, and (ii) obtain recommendations from two certified practitioners. TCM products and services can be advertised only with approval from the local TCM authority. Ready-to-use TCM preparations, also known as Chinese patent medicines, are regulated by the National Medical Products Administration (and its predecessor CFDA) similar to preparations used in modern medicine since 1984. The barrier for entry, however, is much lower than medications based on modern/non-TCM principles; the rules allow for omitting clinical testing in a variety of circumstances. As of 2025, the latest (2020) rules allow a simplified procedure for preparations derived from an approved list of "classic prescriptions". The government-run healthcare system covers a number of TCM procedures and preparations. In 2021, a total of 7114.5 billion yuan went into healthcare, amounting for 6.59% of the year's national GDP. Of these, 1111.5 billion yuan went into covering costs associated with TCM preparations (0.97% of national GDP), with 592.4 billion yuan covering the actual medications.
== Criticisms of the classification == William I. Newman and Carl Sagan believe that the growth of energy consumption alone cannot describe the evolution of civilizations; it is also necessary to consider population growth, and in particular the fact that it can be limited by the transport capacity of interplanetary means of travel. They conclude that there can be no ancient civilizations of galactic dimensions, nor galactic empires, although the possibility of networks of colonized worlds (of about 5 to 10 planets) is strong. The scale theorized by Kardashev was born in the geopolitical context of the Cold War, in which energy had supreme value. According to Guillermo A. Lemarchand, a physicist at the University of Buenos Aires, there are four arguments against Kardashev's classification:
Acquired progressive lymphangioma (benign lymphangioendothelioma) Acral fibrokeratoma (acquired digital fibrokeratoma, acquired periungual fibrokeratoma) Acrochordon (cutaneous papilloma, cutaneous tag, fibroepithelial polyp, fibroma molluscum, fibroma pendulum, papilloma colli, skin tag, soft fibroma, Templeton skin tag) Adenoma sebaceum Adult type of generalized eruption of cutaneous mastocytosis African cutaneous Kaposi sarcoma African lymphadenopathic Kaposi sarcoma Aggressive infantile fibromatosis AIDS-associated Kaposi sarcoma Ainhum (bankokerend, dactylolysis spontanea, sukhapakla) Angiofibroma Angiokeratoma Angiokeratoma of Fordyce (angiokeratoma of the scrotum and vulva) Angiokeratoma of Mibelli (Mibelli's angiokeratoma, telangiectatic warts) Angioleiomyoma (vascular leiomyoma) Angiolipoleiomyoma Angiolipoma Angioma serpiginosum Angiosarcoma Aponeurotic fibroma (calcifying aponeurotic fibroma, juvenile aponeurotic fibroma) Atypical fibroxanthoma Benign lipoblastomatosis (embryonic lipoma) Buschke–Ollendorff syndrome (dermatofibrosis lenticularis disseminata) Capillary aneurysms Carcinoid Cellular angiofibroma Cherry angioma (De Morgan spot, senile angioma) Chondrodermatitis nodularis chronica helicis (chondrodermatitis nodularis helicis) Chondroid lipoma Chordoma Classic Kaposi sarcoma Collagenous fibroma (desmoplastic fibroblastoma) Composite hemangioendothelioma Connective tissue nevus (collagenoma, elastoma, shagreen patch) Cutaneous endometriosis Cutaneous meningioma (heterotopic meningeal tissue, rudimentary meningocele) Cutaneous myelofibrosis Cutaneous myxoma Cutis marmorata telangiectatica congenita (congenital generalized phlebectasia, Van Lohuizen syndrome) Dermal dendrocyte hamartoma Dermatofibroma (benign fibrous histiocytoma, dermal dendrocytoma, fibrous dermatofibroma, fibrous histiocytoma, fibroma simplex, histiocytoma, nodular subepidermal fibrosis, sclerosing hemangioma) Dermatofibrosarcoma protuberans Desmoid tumor Diffuse cutaneous mastocytosis Diffuse infantile fibromatosis Dupuytren's contracture (Dupuytren's diathesis, Dupuytren's disease, palmar fibromatosis) Eccrine angiomatous hamartoma Elastofibroma dorsi Endovascular papillary angioendothelioma (Dabska tumor, Dabska-type hemangioendothelioma, hobnail hemangioendothelioma, malignant endovascular papillary angioendothelioma, papillary intralymphatic angioendothelioma) Epithelioid cell histiocytoma Epithelioid hemangioendothelioma Epithelioid sarcoma Erythrodermic mastocytosis Extraskeletal chondroma (chondroma of soft parts) Familial myxovascular fibromas Fascial hernia Fibroma of tendon sheath Fibromatosis colli (sternomastoid tumor of infancy) Fibrous hamartoma of infancy Fibrous papule of the nose (benign solitary fibrous papule, fibrous papule of the face) Folded skin with scarring (Michelin tire baby syndrome) Fordyce's spot (Fordyce's disease) Ganglion cyst Ganglioneuroma Gardner fibroma Genital leiomyoma (dartoic leiomyoma) Giant cell fibroblastoma Giant cell tumor of the tendon sheath (giant cell synovioma, localized nodular tenosynovitis, pigmented villonodular synovitis) Glomeruloid hemangioma Glomus tumor (glomangioma, solid glomus tumor, solitary glomus tumor) Granular cell tumor (Abrikossoff's tumor, Abrikossov's tumor, granular cell myoblastoma, granular cell nerve sheath tumor, granular cell schwannoma) Hamartoma Hemangiopericytoma Hemangiosarcoma Hibernoma (fetal lipoma, lipoma of embryonic fat, lipoma of immature adipose tissue) Hypertrophic scar Immunosuppression-associated Kaposi sarcoma Infantile digital fibromatosis (inclusion body fibromatosis, infantile digital myofibroblastoma, Reye tumor) Infantile hemangiopericytoma (congenital hemangiopericytoma) Infantile myofibromatosis (congenital generalized fibromatosis, congenital multicentric fibromatosis) Infantile systemic hyalinosis (juvenile systemic hyalinosis) Intradermal spindle cell lipoma Intravascular papillary endothelial hyperplasia (Masson's hemangio-endotheliome vegetant intravasculaire, Masson's lesion, Masson's pseudoangiosarcoma, Masson's tumor, papillary endothelial hyperplasia) Juvenile hyaline fibromatosis (fibromatosis hyalinica multiplex juvenilis, Murray–Puretic–Drescher syndrome) Kaposiform hemangioendothelioma (infantile kaposiform hemangioendothelioma) Kasabach–Merritt syndrome (hemangioma with thrombocytopenia) Keloid (Keloidal scar) Keratinizing metaplasia Keratocyst Klippel–Trenaunay syndrome (angioosteohypertrophy syndrome, hemangiectatic hypertrophy) Knuckle pads (heloderma) Leiomyosarcoma Lipoma Liposarcoma (atypical lipoma, atypical lipomatous tumor) Lymphangiectasis (lymphangioma) Lymphangiomatosis Malignant fibrous histiocytoma Malignant peripheral nerve sheath tumor (malignant schwannoma, neurofibrosarcoma, neurosarcoma) Mast cell sarcoma Meningocele Metastatic carcinoma Microvenular hemangioma (microcapillary hemangioma) Midline nevus flammeus (angel's kiss, salmon patch) Multifocal lymphangioendotheliomatosis (congenital cutaneovisceral angiomatosis with thrombocytopenia, multifocal lymphangioendotheliomatosis with thrombocytopenia) Multinucleate cell angiohistocytoma Multiple cutaneous and uterine leiomyomatosis syndrome (leiomyomatosis cutis et uteri, multiple leiomyomatosis, Reed's syndrome) Multiple cutaneous leiomyoma (pilar leiomyoma) Neural fibrolipoma Neuroblastoma (infantile neuroblastoma, neuroepithelioma) Neuroma cutis Neurothekeoma (bizarre cutaneous neurofibroma, cutaneous lobular neuromyxoma, myxoma of the nerve sheath, myxomatous perineurioma, nerve sheath myxoma) Nevus flammeus (capillary malformation, port-wine stain) Nevus flammeus nuchae (stork bite) Nevus lipomatosus superficialis (nevus lipomatosis of Hoffman and Zurhelle) Nevus oligemicus Nodular fasciitis (nodular pseudosarcomatous fasciits, pseudosarcomatous fasciitis, subcutaneous pseudosarcomatous fibromatosis) Oral submucous fibrosis Pachydermodactyly Palisaded encapsulated neuroma Paraneoplastic syndrome Pearly penile papules (hirsuties coronae glandis, hirsutoid papillomas) Peyronie's disease (induratio penis plastica) Phakomatosis pigmentovascularis Piloleiomyoma Plantar fibromatosis (Ledderhose's disease) Pleomorphic fibroma Pleomorphic lipoma Plexiform fibrohistiocytic tumor Porokeratotic eccrine ostial and dermal duct nevus Progressive nodular histiocytoma Proliferating angioendotheliomatosis Prominent inferior labial artery Pseudo-ainhum
The exact serotonin receptors responsible for MDMA's entactogenic effects are unclear, but may include the serotonin 5-HT1A receptor, 5-HT1B receptor, and 5-HT2A receptor, as well as 5-HT1A receptor-mediated oxytocin release and consequent activation of the oxytocin receptor. The role of oxytocin in the effects of MDMA was demonstrated in people with arginine vasopressin deficiency (central diabetes insipidus), who have oxytocin deficiency and in whom MDMA fails to elevate oxytocin levels and shows greatly blunted entactogenic effects. Induction of dopamine release is thought to be importantly involved in the stimulant and euphoriant effects of MDMA, while induction of norepinephrine release and serotonin 5-HT2A receptor stimulation are believed to mediate its sympathomimetic effects. Activation of serotonin 5-HT1B and 5-HT2A receptors is also thought to be involved in the stimulant and euphoriant effects of MDMA, while serotonin 5-HT2C receptor activation is thought to constrain these effects and limit MDMA's reinforcing potential. Serotonin 5-HT2B receptor signaling appears to be required for MDMA-induced serotonin release and effects. MDMA has been associated with a unique subjective "magic" or euphoria that few or no other known entactogens are said to fully reproduce. The mechanisms underlying this property of MDMA are unknown, but it has been theorized to be due to a specific mixture and balance of pharmacological activities, including combined serotonin, norepinephrine, and dopamine release and direct serotonin receptor agonism.
Sources: en.wikipedia.org
It is a synthetic peptide. Its design was inspired by a fragment of a protein found in human gastric juice, but the fifteen-amino-acid molecule itself is made in a laboratory and is not a normal component of food or of human tissue in appreciable amounts.
The number is an internal laboratory designation from the research group that first described the fragment. It does not encode a molecular weight, a receptor target, or a measured biological effect, and it carries no meaning outside the naming history of the compound.
It contains fifteen amino acid residues and has a calculated mass of roughly 1419.5 daltons. That places it in the short-peptide range, well below the size of small proteins, which affects how it is synthesized, purified, and analyzed.
BPC-157 is a synthetic fifteen-amino-acid peptide whose sequence corresponds to a fragment of a protein found in human gastric juice. It is studied mainly in preclinical research and is not an approved pharmaceutical product in major markets. Materials sold for laboratory use are typically labelled as research chemicals.