Everything below concerns GHRH analog. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2025-11-11. Numbers and descriptions here follow the published literature rather than marketing material.
CJC-1295 is a synthetic peptide modeled on growth hormone-releasing hormone, the hypothalamic signal that prompts the pituitary to release growth hormone. Its sequence corresponds to the first twenty-nine residues of human GHRH, with four substitutions that slow enzymatic breakdown. Early descriptions placed the compound in research on growth hormone deficiency and related conditions, and later literature groups it with the long-acting GHRH analogs. The name appears in both laboratory and popular fitness writing, where it sometimes labels chemically different peptides.
Two related peptides circulate under the CJC-1295 label, and they differ mainly in how long they persist in circulation. The version carrying a drug affinity complex includes a maleimidopropionic acid linker that forms a covalent bond with serum albumin. The other version, usually written as modified GRF(1-29) or tetrasubstituted GRF(1-29), lacks that linker and is cleared quickly. Mixing the two produces inconsistent readings of published half-life values, because the linker rather than the receptor-facing sequence drives most of the difference.
The core sequence keeps the receptor-binding region of GHRH while replacing four positions that are vulnerable to dipeptidyl peptidase-4 and other proteases. Substitutions at positions 2, 8, 15, and 27 raise metabolic stability relative to the natural hormone. The N-terminal residues remain essential for activity, so changes there generally lower potency. Molecular weight sits near 3368 daltons for the tetrasubstituted analog without the linker, while the albumin-binding form is heavier because of the added maleimide group.
Lyophilized material is generally stable for extended periods when held at minus twenty degrees Celsius or below and protected from moisture and light. In solution the peptide is more labile; bond hydrolysis, aggregation and oxidation of susceptible residues all proceed faster at ambient temperature. Repeated freeze and thaw cycles should be avoided because they promote clumping and loss of soluble material. The conjugated variant adds a further consideration, since the maleimide group can hydrolyze in aqueous buffer and lose its ability to react with albumin.
Laboratory handling centers on minimizing exposure to water, heat and oxygen before use. Working solutions are typically prepared in sterile water or a mild buffer, and any residual particulate matter is removed by filtration. When the powder dissolves slowly, a small proportion of acetonitrile or dilute acetic acid is sometimes added as a co-solvent. Containers are kept sealed and desiccated between uses. Records of lot number, reconstitution date and storage conditions support later comparison of results across experiments.
| Property | Value | Notes |
|---|---|---|
| Class | Synthetic peptide | GHRH receptor agonist |
| Sequence length | 29 amino acids | Derived from human GHRH |
| Molecular weight | About 3368 Da without linker | Albumin-binding form is heavier |
| Appearance | White to off-white lyophilized powder | Common form for research reference material |
| Typical storage | -20 °C or below, desiccated | Protect powder from light and moisture |
Gastrointestinal: constipation, diarrhea, nausea, vomiting Dermatologic: erythema, pain, phlebitis, rash Neurologic: headaches, insomnia Prolonged periods of piperacillin-tazobactam therapy have been associated with the potential development of hematologic adversities such as leukopenia (16.3%), neutropenia (10%), and eosinophilia (10%) in adult patients. The combination of piperacillin-tazobactam with other antibiotics was found to be a major risk factor for leukopenia as well. Additionally, the chances of developing these illnesses increases in younger patients with fewer conditions, prolonging their time to recover. Other cases of adverse effects include instances of renal dysfunction, hepatitis, hyperactivity, anemia, abnormalities in coagulation, and hypokalemia. Allergic reactions can be induced from the side chains of β-lactam antibiotics such as amoxicillin, or antibodies surrounding the nucleus of penicillin.
== Variations and related drinks == Calvados and applejack are strong liquors distilled from cider. They differ in their geographical origin and their method of distillation. Calvados is made throughout Normandy, not just in the Calvados département. It is made from cider by double distillation. In the first pass, the result is a liquid containing 28–30% alcohol. After the second pass, the concentration of alcohol is about 40%. Applejack is a strong alcoholic beverage made in North America by concentrating cider, either by the traditional method of freeze distillation or by true evaporative distillation. In traditional freeze distillation, a barrel of cider is left outside during the winter. When the temperature is low enough, the water in the cider starts to freeze. If the ice is removed, the (now more concentrated) alcoholic solution is left behind in the barrel. If the process is repeated often enough, and the temperature is low enough, the alcohol concentration is raised to 20–30% alcohol by volume. Home production of applejack is popular in Europe. Ice cider (French: cidre de glace), originating in Quebec and inspired by ice wine, has become a Canadian speciality, now also being produced in England. For this product, the apples are frozen either before or after being harvested. Its alcohol concentration is 9–13% ABV. Cidre de glace is considered a local speciality in Quebec and can fetch high prices on the international market. In Canada, ice cider is produced by natural, outdoor freezing.
=== Cost and generics === Bicalutamide is off-patent and available as a generic. Unlike bicalutamide, the newer NSAA enzalutamide is still on-patent, and for this reason, is considerably more expensive in comparison. The patent protection of all three of the first-generation NSAAs has expired and flutamide and bicalutamide are both available as low-cost generics. Nilutamide, on the other hand, has always been a poor third competitor to flutamide and bicalutamide and, in relation to this fact, has not been developed as a generic and is only available as brand name Nilandron, at least in the U.S. Bicalutamide is considerably less costly than GnRH analogues, which, in spite of some having been off-patent many years, have been reported (in 2013) to typically cost US$10,000–$15,000 per year (or about US$1,000 per month) of treatment.
==== Trauma ==== Tranexamic acid has been found to decrease the risk of death due to any cause in people who have significant bleeding due to trauma. It is most effective if taken within the first three hours following major trauma. It also decreases the risk of death if given within the first three hours of brain injury.
Sources: en.wikipedia.org
=== Clinical applications === Thymosin β4 has been tested in multicenter trials sponsored jointly by RegeneRx Biopharmaceuticals Inc (Rockville, MD, USA) and Sigma Tau (Pomezia, Italy) in the United States and Europe in patients with bed sores, ulcers caused by venostasis, and Epidermolysis bullosa simplex and was found to accelerate bed sore and stasis ulcer repair by one month. It has also been tested in patients with chronic neurotrophic corneal epithelial defects and found to promote repair. Thymosin β15 : Levels of human thymosin β15 in urine have shown promise as a diagnostic marker for prostate cancer which is sensitive to potential aggressiveness of the tumour
== Description == It is a perennial, with a typical growth height of 50–120 cm. Like most other members of the carrot family, it produces large umbels of white flowers and has dissected leaves. Angelica keiskei closely resembles Angelica japonica, but can be distinguished by its blooming period, which lasts from May to October, whereas A. japonica's blooming period lasts only between May and July. Another indicator is the characteristic color of its sap.
=== Odor === Kimchi is known for its strong, spicy, flavors and odors, although milder varieties exist. Variations in the fermentation process cause the final product to be highly variable in terms of quality and flavor. The strong odor is especially tied to the sulfur compounds from garlic and ginger of kimchi, which can be less appealing to non-Koreans. Thus, scientists are experimenting with the types of bacteria used in its production to minimize the odor to increase the appeal to international markets. These efforts are not universally appreciated by lovers of kimchi, as the flavor is affected in the process, and some see that "South Korea's narrative about its own culinary staple" is being manipulated to suit the foreigners' tastes.
Sources: en.wikipedia.org
==== Fidelity ==== Unlike the proofreading mechanisms of DNA polymerase those of RNAP have only recently been investigated. Proofreading begins with separation of the mis-incorporated nucleotide from the DNA template. This pauses transcription. The polymerase then backtracks by one position and cleaves the dinucleotide that contains the mismatched nucleotide. In the RNA polymerase this occurs at the same active site used for polymerization and is therefore markedly different from the DNA polymerase where proofreading occurs at a distinct nuclease active site. The overall error rate is around 10−4 to 10−6.
=== Surgery === In severe cases, an endoscopic thoracic sympathectomy procedure can be performed. Here, the nerves that signal the blood vessels of the fingertips to constrict are surgically cut. Microvascular surgery of the affected areas is another possible therapy, but this procedure should be a last resort. A more recent treatment for severe Raynaud's is botulinum toxin. In a 2009 study of 19 patients ranging in age from 15 to 72 years with severe Raynaud's phenomenon, 16 patients (84%) reported pain reduction at rest, 13 patients reported immediate pain relief, and three had gradual pain reduction over 1–2 months. All 13 patients with chronic finger ulcers healed within 60 days. Only 21% of the patients required repeated injections. A 2007 article describes similar improvement in a series of 11 patients. All patients had significant relief of pain.
== Structure == The crystal structure of AGAT was determined by Humm, Fritsche, Steinbacher, and Huber of the Max Planck Institute of Biochemistry in Martinsried, Germany in 1997. X-ray examinations of the structure reveal a novel symmetry with fivefold pseudosymmetry of beta beta alphabeta modules. The overall structure of the molecule resembles a basket with handles. The active site lies at the bottom of a long, narrow channel and includes a Cys-His-Asp catalytic triad. The intermediate structure involves the amidino group temporarily covalently bonding to the Cys residue on the catalytic triad, while the His residue takes part in general acid/base catalysis, meaning it acts as a proton donator/receiver itself.
== See also == Politics of Serbia and Montenegro Prime Minister of Serbia and Montenegro List of heads of state of Yugoslavia President of Montenegro List of presidents of Montenegro President of Serbia List of presidents of Serbia
Sources: en.wikipedia.org
Natural GHRH is degraded quickly by dipeptidyl peptidase-4 and related enzymes, giving it a half-life measured in minutes. CJC-1295 carries substitutions that slow that breakdown, so it stays intact longer. Both act at the same pituitary receptor and produce the same class of signal.
The label was first attached to the albumin-binding form during early development work. A shorter analog without the linker later became known by the same name in informal use. Published papers normally state which version was studied, so the methods section resolves the ambiguity.
It is a synthetic peptide rather than a steroid, and it does not occur naturally in the body. Its sequence is derived from a hypothalamic hormone called growth hormone-releasing hormone. It works as a receptor agonist rather than as a replacement for that hormone.
The mass difference from the linker is large enough for routine detection by mass spectrometry. The unconjugated form gives a single sharp signal at its expected weight. Material that has already reacted with albumin shows a much higher mass and a broadened chromatographic peak.