This is a working overview of gastric juice, written for readers who want more than a one-paragraph summary but less than a textbook.
This page was last updated on 2026-08-01 and is reviewed periodically as new material appears.
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.
Within the research literature, the peptide is discussed through several provisional mechanisms, including cytoprotection, modulation of growth factor signaling, and interaction with the nitric oxide system. None of these mechanisms is fully characterized, and no single pathway is universally accepted. Review articles typically note the gap between consistent animal findings and sparse human evidence. The compound is classified as a research chemical rather than an approved pharmaceutical, which shapes how studies are designed, funded, and reported.
BPC-157 is a synthetic pentadecapeptide with the sequence GEPPPGKPADDAGLV, corresponding to a partial fragment of a larger protein detected in human gastric juice. The name derives from the parent protein designation BPC, an abbreviation of body protection compound, with 157 acting as a fraction or batch identifier used by the original investigators. Its molecular weight is approximately 1419 daltons, and the chain contains no unusual residues or disulfide bridges. In the literature it is described as a short, water-soluble fragment rather than a complete natural protein.
| Property | Value | Notes |
|---|---|---|
| Amino acid count | 15 residues | Synthetic pentadecapeptide chain |
| Sequence | GEPPPGKPADDAGLV | Single-letter amino acid code |
| Molecular formula | C62H98N16O22 | Free peptide, without counter-ion |
| Theoretical mass | Approximately 1419.5 daltons | Varies slightly with adducts and counter-ions |
| Origin | Fragment of a human gastric juice protein | Source of the BPC designation |
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.
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.
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.
The Michel I Government was the Federal Government of Belgium formed following the 2014 Belgian government formation and sworn in on 11 October 2014. The administration was a centre-right coalition of the New Flemish Alliance (N-VA), the Christian Democratic and Flemish (CD&V), the Open Flemish Liberals and Democrats (Open Vld) and the Reformist Movement (MR). The prime minister was Charles Michel. The government had an agenda of socio-economic reforms, especially through austerity measures, with its priorities being improving Belgium's economic competitiveness and reducing unemployment. It fell in December 2018 over the Global Compact for Migration. It was followed by the Michel II Government as a centre minority coalition cabinet of Christian Democratic and Flemish (CD&V), the Open Flemish Liberals and Democrats (Open Vld) and the Reformist Movement (MR). On 26 October 2019, it was announced that Sophie Wilmès would take over the role of prime minister from Michel on 1 November 2019, and form a new government as the first ever female prime minister of Belgium.
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=== Eruption of the fighting === 27 December 1918: The uprising starts in the evening with shooting in front of Poznań's police headquarters. Fighting also start in other towns: Szamotuły, Środa Wielkopolska, Pniewy, Opalenica, Buk, Trzemeszno, Września and Gniezno are captured. Poles in Poznań capture the main train station, the main post office and part of city fortifications. 28 December 1918: The Poles in Poznań capture Cytadela (a main stronghold), Fort Grolmann and an armory on ul. Wielkie Garbary The commission of the NRL promotes Captain Stanisław Taczak to temporary commander-in-chief of the uprising (he is also promoted to rank of major). 29 December 1918: The Poles capture Grodzisk Wielkopolski, Kłecko, Kórnik, Wielichowo, Gostyń, Witkowo and other towns. 30 December 1918 Failure of peace talks between the insurgents and the German authorities, the latter refusing to take the responsibility for the hostilities of 27 December. In Poznań, the Poles force the German 6th Regiment of Grenadiers from their barracks. After talks, the regiment leaves the city with their weapons. The Poles capture Wronki, Wągrowiec, Gołańcz. Polish soldiers stop a German offensive against Gniezno near Zdziechowa. 31 December 1918 The Poles capture Kościan, Oborniki Wielkopolskie, Ostrów Wielkopolski. A unit of Poles under command of Paweł Cyms begins offensive on Cuiavia. 1 January 1919 Paderewski leaves Poznań. The capture of Jarocin, Krotoszyn and Mogilno.
== Applications == Poisonous compounds may be useful either for their toxicity, or, more often, because of another chemical property, such as specific chemical reactivity. Poisons are widely used in industry and agriculture, as chemical reagents, solvents or complexing reagents, e.g. carbon monoxide, methanol and sodium cyanide, respectively. They are less common in household use, with occasional exceptions such as ammonia and methanol. For instance, phosgene is a highly reactive nucleophile acceptor, which makes it an excellent reagent for polymerizing diols and diamines to produce polycarbonate and polyurethane plastics. For this use, millions of tons are produced annually. However, the same reactivity makes it also highly reactive towards proteins in human tissue and thus highly toxic. In fact, phosgene has been used as a chemical weapon. It can be contrasted with mustard gas, which has only been produced for chemical weapons uses, as it has no particular industrial use. Biocides need not be poisonous to humans, because they can target metabolic pathways absent in humans, leaving only incidental toxicity. For instance, the herbicide 2,4-dichlorophenoxyacetic acid is a mimic of a plant growth hormone, which causes uncontrollable growth leading to the death of the plant. Humans and animals, lacking this hormone and its receptor, are unaffected by this, and need to ingest relatively large doses before any toxicity appears. Human toxicity is, however, hard to avoid with pesticides targeting mammals, such as rodenticides.
Sources: en.wikipedia.org
The news website Tortoise Media reports that the Conservatives have received a further £5m in donations from Frank Hester that are yet to be declared. 16 March Vaughan Gething is elected to lead Welsh Labour, and will become First Minister of Wales. He will be Wales's first black leader, and the first black person to lead a country in Europe. Sainsbury's apologises to its online customers after a technical error meant that orders could not be fulfilled. 18 March – At Manchester Crown Court, Jacob Graham is sentenced to 13 years in prison together with a further five year extended period on licence for creating a "freedom encyclopaedia" containing details on how to build weapons for the purposes of terrorism. 19 March At Southend Crown Court, 39-year-old Nicholas Hawkes, the first person in England and Wales to be convicted of cyberflashing, is sentenced to 66 weeks in prison. This new offence follows passage of the Online Safety Act, which came into effect on 31 January. HMRC announces that its self-assessment helpline will be closed for six months of the year, with the line scheduled to close from 8 April to 30 September. Customers seeking help during that period will be forced to use an online chatbot. The British Board of Film Classification updates its guidelines, meaning films containing scenes of sex or nudity are more likely to receive a 15 rather than a 12A rating going forward. 20 March Inflation falls from 4% to 3.4%, its lowest rate since September 2021.
== Mechanism of action == Colistin is a polycationic peptide and has both hydrophilic and lipophilic moieties. These cationic regions interact with the bacterial outer membrane by displacing magnesium and calcium bacterial counter ions in the lipopolysaccharide. The hydrophobic and hydrophilic regions interact with the cytoplasmic membrane just like a detergent, solubilizing the membrane in an aqueous environment. This effect is bactericidal even in an isosmolar environment. Colistin binds to lipopolysaccharides and phospholipids in the outer cell membrane of Gram-negative bacteria. It competitively displaces divalent cations (Ca2+ and Mg2+) from the phosphate groups of membrane lipids, which leads to disruption of the outer cell membrane, leakage of intracellular contents and bacterial death. Colistin has also been reported to target tubulin, favorizing its polymerization.
The Parliamentary Commissioner for Standards launches an investigation into Democratic Unionist Party MP Sammy Wilson for an alleged breach of lobbying rules after he failed to declare an interest when tabling a question on the Turkish Republic of Northern Cyprus, and following a visit to the area. 16 November – The SNP's National Executive Committee proposes cutting the number of staff at its headquarters from 26 to 16. Ruth Maguire, MSP for Cunninghame South, announces she will not seek re-election at the 2026 Scottish Parliament election because she is to undergo treatment for cancer. Protesters gather outside Welsh Labour's party conference to oppose changes to inheritance tax for farmers outlined in the October budget as Prime Minister Sir Keir Starmer defends the government's changes. 17 November – Sir Ed Davey, the leader of the Liberal Democrats, says that Jane Dodds, who leads the party in Wales, should reflect on her position after a report found she made a "grave error of judgement" in her handling of a sexual abuse scandal when she worked for the Church of England. 18 November – At the 2024 G20 Rio de Janeiro summit, Starmer holds talks with Chinese president Xi Jimping and emphasises the importance of a "strong UK–China relationship" for both countries. 19 November – Scottish Labour leader Anas Sarwar says his party will expand the eligibility for winter fuel payments in Scotland if they win the 2026 Scottish Parliament election.
=== Overview === Polonium can be hazardous and has no biological role. By mass, polonium-210 is around 250,000 times more toxic than hydrogen cyanide (the median lethal dose for 210Po is less than 1 microgram for an average adult (see below) compared with about 250 milligrams for hydrogen cyanide). The main hazard is its intense radioactivity (as an alpha emitter), which makes it difficult to handle safely. Even in microgram amounts, handling 210Po is extremely dangerous, requiring specialized equipment (a negative pressure alpha glove box equipped with high-performance filters), adequate monitoring, and strict handling procedures to avoid any contamination. Alpha particles emitted by polonium will damage organic tissue easily if polonium is ingested, inhaled, or absorbed, although they do not penetrate the epidermis and hence are not hazardous as long as the alpha particles remain outside the body and do not come near the eyes, which are living tissue. Wearing chemically resistant and intact gloves is a mandatory precaution to avoid transcutaneous diffusion of polonium directly through the skin. Polonium delivered in concentrated nitric acid can easily diffuse through inadequate gloves (e.g., latex gloves) or the acid may damage the gloves. Polonium does not have toxic chemical properties. It has been reported that some microbes can methylate polonium by the action of methylcobalamin. This is similar to the way in which mercury, selenium, and tellurium are methylated in living things to create organometallic compounds.
Sources: en.wikipedia.org
Some suspected that after finishing the conscripted aerodrome work, they might be drafted to fight overseas. Rumours to this effect abounded enough that the chief native commissioner, H H D Simmonds, distributed a circular in November 1940 instructing the commissioners to make clear that the drafted men were required for labour only. Voluntary employment increased sharply during 1940 and 1941, both among indigenous blacks and migrant labourers, but many white farmers still complained about a lack of manpower. A severe drought during the 1941–42 season led to a food shortage in the colony, prompting the passing in June 1942 of the Compulsory Native Labour Act, under which unemployed black males between 18 and 45 years of age could be conscripted for work on white-owned farms. Announcing the act, Tredgold—by now Minister of Native Affairs in addition to Defence and Justice—commented that its "principle ... would be intolerable under ordinary circumstances", but that the war made it necessary. The act required each draftee to work at least three months at 15s/- per month; the pay rose to 17s/6 if he agreed to stay a further three months. This conscription of labour contributed to the rise in the country's overall agricultural yield, but had a negative impact on the localised production of many kraals, either because too many men had been drafted for work elsewhere or because they had fled to avoid it. The scheme continued until the act's repeal in 1946.
=== Factors found not to correlate with fibromyalgia === Studies on personality and fibromyalgia have shown inconsistent results. Although some have suggested that fibromyalgia patients are more likely to have specific personality traits, it appears that, in comparison to other diseases, when anxiety and depression are statistically controlled for, personality has less relevance, and does not differ from healthy controls.
As the surface of the sensor shears through the liquid, energy is lost due to its viscosity. This dissipated energy is then measured and converted into a viscosity reading. A higher viscosity causes a greater loss of energy. Extensional viscosity can be measured with various rheometers that apply extensional stress. Volume viscosity can be measured with an acoustic rheometer. Apparent viscosity is a calculation derived from tests performed on drilling fluid used in oil or gas well development. These calculations and tests help engineers develop and maintain the properties of the drilling fluid to the specifications required. Nanoviscosity (viscosity sensed by nanoprobes) can be measured by fluorescence correlation spectroscopy.
Sources: en.wikipedia.org
The peptide is synthetic, but its sequence matches a segment of a protein present in human gastric juice. It does not occur as a free fifteen-residue peptide in the body.
Rodents account for the large majority of published experiments. Human data are sparse and mostly observational, so cross-species extrapolation remains uncertain.
It is not an approved therapeutic in most jurisdictions. Regulatory status varies by country, and several places restrict it as a research chemical.
The sequence corresponds to a fragment of a protein found in human gastric juice, so related sequences are natural. The isolated fifteen-amino-acid peptide supplied for research is produced synthetically. Whether the free fragment circulates naturally in humans has not been settled.