The short version of gastric juice fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2026-03-06 and is reviewed periodically as new material appears.
Most published studies examine BPC-157 in animal models rather than in humans. Common subjects include rats and mice, and researchers often use models of tissue injury, surgery, or induced inflammation. Reported endpoints include healing rates, blood vessel formation, and markers of tissue repair. These designs provide controlled comparisons, but findings in animals do not automatically transfer to people. Human clinical data remain limited and are frequently described as preliminary.
Doses in the literature are usually expressed in micrograms or nanograms per kilogram of body weight. Investigators have administered the peptide by several routes, including injection and oral delivery, depending on the question asked. Route and dose vary widely across studies, which complicates direct comparison of results. Many papers report effects at low doses, but the absence of a standardized protocol limits generalization. Reporting practice differs between research groups.
Identity and purity are established using reversed-phase high-performance liquid chromatography, which separates the peptide from related impurities and yields a percentage purity. Mass spectrometry, typically with electrospray ionization, confirms the molecular mass against the expected value. Amino acid analysis or peptide mapping provides additional sequence confirmation. These methods are complementary, since chromatography measures how much material is present while mass spectrometry verifies what that material is. A certificate of analysis normally reports both.
Analytical results depend on the column, gradient, and detector wavelength chosen by the laboratory, so purity values from different sources are not always directly comparable. Water content, counterion form, and residual trifluoroacetate affect both mass and purity calculations. Microbiological and endotoxin testing are separate from chemical purity and are not covered by a standard chromatographic run. Buyers evaluating a material typically request the full method description rather than a single purity figure.
Lyophilized peptide powder is generally stored at minus twenty degrees Celsius or lower and kept away from light and moisture. Under these conditions degradation is slow, and sealed vials remain stable for extended periods. Once dissolved, the material is less stable, particularly in aqueous buffers near neutral pH, where hydrolysis and oxidation proceed faster. Solutions are usually kept cold and used within days to weeks. Repeated freeze-thaw cycles are avoided because they encourage aggregation.
| Property | Value | Notes |
|---|---|---|
| Typical subjects | Rats and mice | Animal models |
| Common routes | Injection and oral | Route varies by study |
| Reported dose range | Microgram to milligram per kg | Not standardized across work |
| Frequent endpoints | Tissue repair, angiogenesis | Marker-dependent |
| Human evidence | Limited | Mostly small or preliminary studies |
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 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.
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.
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.
Identity and purity are established with complementary methods rather than one test. Reverse-phase high-performance liquid chromatography separates the main peak from deletion sequences and oxidized variants, and its area percentage is the usual purity figure. Mass spectrometry confirms the expected molecular mass and can flag truncations or modifications that chromatography alone might miss. Amino acid analysis and peptide mapping add sequence-level confirmation, while residual counter-ion and water content are measured separately.
A freeze-dried sample is generally the most stable form and is commonly held at minus twenty degrees Celsius or lower for long-term keeping, with brief transfers at room temperature. The solid is hygroscopic, so vials are warmed to ambient temperature before opening to prevent condensation from degrading the contents. Light exposure and repeated temperature cycling are both avoided in routine handling. Storage over a desiccant is a common laboratory practice that limits moisture uptake during repeated access.
Identity and purity are usually assessed with reversed-phase high-performance liquid chromatography, often paired with mass spectrometry using electrospray or MALDI ionisation. Amino acid analysis and peptide mapping by enzymatic digestion provide additional sequence-level confirmation. Purity is commonly reported as an area percentage from a chromatographic trace, and water content can be measured by Karl Fischer titration. Reported masses may differ by tens of daltons between sources because preparations can contain acetate or trifluoroacetate counterions, and such differences are not by themselves evidence of a different peptide.
BPC-157 is normally distributed as a lyophilised powder that ranges from white to off-white in appearance. The peptide dissolves readily in water, normal saline, and common aqueous buffers, and it is poorly soluble in nonpolar solvents such as hexane or vegetable oils. Lyophilised vials take up moisture if left open, which changes the mass of powder in the container and complicates any later weighing. Because the material is handled in small quantities, static and adhesion to glass or plastic can also cause noticeable losses during transfer.
Blood is a specialized form of connective tissue and body fluid in the circulatory system of humans and other vertebrates that delivers necessary substances such as nutrients and oxygen to the cells of the body, and transports metabolic waste products away from those same cells. Blood is composed of blood cells suspended in plasma. Plasma, which constitutes 55% of blood fluid, is mostly water (92% by volume), and contains proteins, glucose, mineral ions, and hormones. The blood cells are mainly red blood cells (erythrocytes), white blood cells (leukocytes), and (in mammals) platelets (thrombocytes). The most abundant cells are red blood cells. These contain hemoglobin, which facilitates oxygen transport by reversibly binding to it, increasing its solubility. Jawed vertebrates have an adaptive immune system, based largely on white blood cells. White blood cells help to resist infections and parasites. Platelets are important in the clotting of blood. Blood is circulated around the body through blood vessels by the pumping action of the heart. In animals with lungs, arterial blood carries oxygen from inhaled air to the tissues of the body, and venous blood carries carbon dioxide, a waste product of metabolism produced by cells, from the tissues to the lungs to be exhaled. Blood is bright red when its hemoglobin is oxygenated and dark red when it is deoxygenated. Medical terms related to blood often begin with hemo-, hemato-, haemo- or haemato- from the Greek word αἷμα (haima) for "blood".
== Epidemiology == BPD has a point prevalence of 1.6% and a lifetime prevalence of 5.9% of the global population. Within clinical settings, the occurrence of BPD is 6.4% among urban primary care patients, 9.3% among psychiatric outpatients, and approximately 20% among psychiatric inpatients. Utilization of healthcare resources by individuals with BPD is high. Up to half may show significant improvement in their condition, resulting in ineligibility for diagnosis of BPD, following a ten-year period with appropriate treatment. Regarding gender distribution, women are diagnosed with BPD three times more frequently than men in clinical environments. Nonetheless, epidemiological research in the United States indicates no significant gender difference in the lifetime prevalence of BPD within the general population. Feminist scholars argue that the diagnosis is disproportionately applied to women, particularly survivors of childhood sexual abuse, and that it pathologizes the understandable emotional and relational responses to gendered violence. The relationship between BPD and ethnicity continues to be ambiguous, with divergent findings reported in the United States. The overall prevalence of BPD in the U.S. prison population is thought to be 17%. Sexual minorities (i.e., lesbian, gay, bisexual) are up to 3.82 times more likely to be diagnosed with BPD and gender minorities (i.e., transgender and gender diverse) are up to 4.05 times more likely to be diagnosed.
285: 483-488, 2001) Molecular Pathomechanisms and New Trends in Drug Research (editor and co-author CRC Press Taylor and Frances Group, 2003) Drug discovery in the kinase inhibitory field using the Nested Chemical Library (TM) technology (co-author, ASSAY AND DRUG DEVELOPMENT TECHNOLOGIES 3: 543-551, 2005) Nuclear translocation of the tumor marker pyruvate kinase M2 induces programmed cell death (co-author, CANCER RESEARCH 67:1602-1608, 2007) AXL is a potential target for therapeutic intervention in breast cancer progression (co-author, CANCER RESEARCH 68:1905-1915, 2008) Kinase-selective enrichment enables quantitative phosphoproteomics of the kinome across the cell cycle (co-author, MOLECULAR CELL 31:438-448, 2008) Proteomics strategy for quantitative protein interaction profiling in cell extracts (co-author, NATURE METHODS 6: 741-744, 2009) Integrating molecular diagnostics into anticancer drug discovery (co-author NATURE REVIEWS DRUG DISCOVERY 9:(523-535, 2010) Development of a Cell Selective and Intrinsically Active Multikinase Inhibitor Bioconjugate (co-author, BIOCONJUGATE CHEMISTRY 22:540-545,2011) Interaction of the EGFR inhibitors gefitinib, vandetanib, pelitinib and neratinib with the ABCG2 multidrug transporter: Implications for the emergence and reversal of cancer drug resistance BIOCHEMICAL PHARMACOLOGY 84: 260-267, 2012 Developing FGFR4 inhibitors as potential anticancer agents via in silico design, supported by in vitro and cellbased (co-author CURRENT MEDICINAL CHEMISTRY 20:1203-1217, 2013
Stratum corneum Stratum lucidum Stratum granulosum Stratum spinosum Stratum basale (also called "stratum germinativum") Blood capillaries are found beneath the epidermis and are linked to an arteriole and a venule. Arterial shunt vessels may bypass the network in ears, the nose and fingertips.
Sources: en.wikipedia.org
16 April The Hoa Dai refugee center in Bình Định Province was invaded by a VC armed propaganda team. The refugees were urged to return to their former (VC dominated) village, but refused; the VC burned 146 houses. After receiving a letter from Nixon affirming U.S. respect for the territory and sovereignty of Cambodia, Prince Norodom Sihanouk announced that he was ready to resume diplomatic relations with the U.S.
== Clinicians == Physician Bachelor of Medicine, Bachelor of Surgery (MBBS) Doctor of Medicine (M.D.) Doctor of Osteopathic Medicine (D.O.) Dentist Bachelor of Dental Surgery (BDS) Doctor of Dental Medicine (DMD) Doctor of Dental Surgery (DDS) Optometrist Doctor of Optometry (OD) Podiatrist Doctor of Podiatry (DPM) Chiropractor Doctor of Chiropractic (DC) Physician Assistant (PA) Doctor of Medical Science (D.Med.Sc.), (D.M.Sc.) Master of Medical Science (M.Med.Sc), (M.M.Sc.) Master of Physician Assistant Studies (M.P.A.S.) Professional (Second-entry) Bachelor of Science in Physician Assistant (B.Sc.PA.), (B.H.Sc.PA) Pharmacist (R.Ph.) Doctor of Pharmacy (PharmD) Master of Pharmacy (MPharm) Bachelor of Pharmacy (B.Pharm)
== Effectiveness == While methadone clinics are generally considered to be effective treatment options for patients addicted to opioids, especially when other interventions have failed, there is controversy surrounding the placement of methadone clinics. There is a perception that the presence of the clinics attracts crime to surrounding areas. However, one study by the University of Maryland School of Medicine found that crime rates do not increase when a methadone clinic is opened. Another study by University of Pennsylvania found within a 200 m radius, the presence of a methadone clinic causes a significant decrease in property and total crime but a significant increase in drug and violent crime. A 2004 GAO study notes that placement of clinics can impede recovery and exacerbate relapse: "Although these clinics are intended to help those in need of rehabilitation, patients who seek treatment must navigate their way to and from the clinics in an environment in which illegal sales of narcotics are daily occurrences. The efforts of patients who are seeking rehabilitation, and clinic professionals who serve them, are significantly undermined by this criminal activity that surrounds them." Between 70 and 90% of patients who discontinue methadone maintenance will relapse. The high relapse rate may be partially due to the severity of cases seen at methadone clinics, as well as the long-term effects of opioid use. Some patients stay on methadone for the rest of their lives, which generates criticism regarding the effectiveness of the clinics.
In May 2016, a study published in the journal Nature determined that HNK, specifically (2S,6S;2R,6R)-HNK, is responsible for the antidepressant-like effects of ketamine in mice; administration of (2R,6R)-HNK demonstrated ketamine-type antidepressant-like effects, and preventing the metabolic conversion of ketamine into HNK blocked the antidepressant-like effects of the parent compound. As (2R,6R)-HNK, unlike ketamine, does not antagonize the NMDA receptor to a clinically relevant degree, and produces no dissociative or euphoric effects, it has consequently been concluded that the antidepressant effects of ketamine may in fact not be mediated via the NMDA receptor. This is tentative, as confirmation that the findings translate to humans is still needed, but it is notable that published human data show a positive association between the antidepressant responses of ketamine and plasma (2S,6S;2R,6R)-HNK levels. In accordance with the notion that the NMDA receptor is not responsible for the antidepressant effects of ketamine, dizocilpine (MK-801), which binds to and blocks the same site on the NMDA receptor that ketamine does, lacks antidepressant-like effects. Moreover, the findings would explain why other NMDA receptor antagonists such as memantine, lanicemine, and traxoprodil have thus far failed to demonstrate ketamine-like antidepressant effects in human clinical trials. Instead of acting via blockade of the NMDA receptor, (2R,6R)-HNK increases activation of the AMPA receptor via a currently unknown/uncertain mechanism.
The effects of liposuction on obesity are less well determined. Some small studies show benefits while others show none. A treatment involving the placement of an intragastric balloon via gastroscopy has shown promise. One type of balloon led to a weight loss of 5.7 BMI units over 6 months or 14.7 kg (32 lb). Regaining lost weight is common after removal, however, and 4.2% of people were intolerant of the device. An implantable nerve simulator which improves the feeling of fullness was approved by the FDA in 2015. In 2016 the FDA approved an aspiration therapy device that siphons food from the stomach to the outside and decreases caloric intake. As of 2015 one trial shows promising results.
Sources: en.wikipedia.org
Huáng bǎi (黃栢 or 黃柏, literally "yellow cypress"), huáng bó (黃柏) or huáng bò (黃檗) is one of the fifty fundamental herbs of traditional Chinese medicine. Known also as Cortex Phellodendri, it is the bark of one of two species of Phellodendron tree: Phellodendron amurense or Phellodendron chinense.
Although all anabolic steroids have androgenic effects, some of them paradoxically results in feminization, such as breast tissue in males, a condition called gynecomastia. These side effects are caused by the natural conversion of testosterone into estrogen and estradiol by the action of aromatase enzyme, encoded by the CYP19A1 gene. Prolonged use of androgenic-anabolic steroids by men results in temporary shut down of their natural testosterone production due to an inhibition of the hypothalamic–pituitary–gonadal axis. This manifests in testicular atrophy, inhibition of the production of sperm, sexual function and infertility. A short (1–2 months) use of androgenic-anabolic steroids by men followed by a course of testosterone-boosting therapy (e.g. clomifene and human chorionic gonadotropin) usually results in return to normal testosterone production.)
== Selected publications == Robinson, Arthur B.; McKerrow, James H.; Cary, Paul (1970). "Controlled Deamidation of Peptides and Proteins: An Experimental Hazard and a Possible Biological Timer". PNAS. 66 (3): 753–757. Bibcode:1970PNAS...66..753R. doi:10.1073/pnas.66.3.753. PMC 283114. PMID 5269237. Pauling, Linus; Robinson, Arthur B.; Teranishi, Roy; Cary, Paul (1971). "Quantitative Analysis of Urine Vapor and Breath by Gas-Liquid Partition Chromatography". PNAS. 68 (10): 2374–2376. Bibcode:1971PNAS...68.2374P. doi:10.1073/pnas.68.10.2374. PMC 426616. PMID 5289873. Robinson, Arthur B.; Robinson, Laurelee R. (1991). "Distribution of glutamine and asparagine residues and their near neighbors in peptides and proteins". PNAS. 88 (20): 8880–8884. Bibcode:1991PNAS...88.8880R. doi:10.1073/pnas.88.20.8880. PMC 52614. PMID 1924347. Soon, Willie H.; Baliunas, Sallie L.; Robinson, Arthur B.; Robinson, Zachary W. (1999). "Environmental effects of increased atmospheric carbon dioxide". Climate Research. 13 (2): 149–164. Bibcode:1999ClRes..13..149S. doi:10.3354/cr013149. Robinson, Noah E.; Robinson, Arthur B. (2001). "Molecular clocks". PNAS. 98 (3): 944–949. Bibcode:2001PNAS...98..944R. doi:10.1073/pnas.98.3.944. PMC 14689. PMID 11158575. Robinson, Arthur B.; Robinson, Noah E. (2008). "Use of Merrifield solid phase peptide synthesis in investigations of biological deamidation of peptides and proteins". Peptide Science. 90 (3): 297–306. doi:10.1002/bip.20852. PMID 17896348. S2CID 35618789.
== Mechanism == Biochemical and structural analyses of aminopeptidase (APPro), methionine aminopeptidase (MetAP), and prolidase, all members of the "pita-bread" metalloenzymes, suggest that they share a common mechanism scheme. The main difference arises in the location of the carbonyl oxygen atom of the scissile peptide bond.
Sources: en.wikipedia.org
Human data are limited. Most evidence comes from animal experiments and from small or uncontrolled reports. The absence of large trials means clinical effects and safety are not firmly established.
Frequently measured outcomes include wound healing, blood vessel growth, and tissue repair markers. Some work examines gastrointestinal protection. The choice of endpoint depends on the model used.
Different routes of administration and different animal models require different amounts. Studies also use varied timelines and measurement methods. This variation makes it difficult to combine results into a single standardized figure.
Bacteriostatic water or sterile saline is commonly used to dissolve the powder. The choice of solvent affects stability and preservation. Aqueous solutions are kept refrigerated and are not intended for long-term storage.