The short version of CJC-1295 fits in a sentence. The long version — which is the one that helps — is below.
Reviewed 2026-06-20. Anything still debated is marked as such rather than presented as settled.
CJC-1295 is the name used for a synthetic peptide modeled on growth hormone-releasing hormone, the hypothalamic signal that prompts the pituitary to release growth hormone. The compound was described by a Canadian drug discovery company in the mid-2000s as a long-acting research tool. Two closely related molecules share the name in practice: one carries a drug affinity complex, or DAC, group, and one does not. The distinction matters because the two behave differently in circulation.
The peptide backbone corresponds to GRF(1-29), the first 29 residues of native growth hormone-releasing hormone, which retains most of the receptor-activating activity of the full-length molecule. Four substitutions distinguish the analog from the natural sequence: D-alanine at position 2, glutamine at position 8, alanine at position 15, and leucine at position 27. These changes slow cleavage by dipeptidyl peptidase IV, the enzyme that degrades native hormone in plasma within minutes. The outcome is improved enzymatic stability combined with a still brief residence time when no additional modification is present.
Naming in this area is inconsistent, and readers should treat product labels with care. In much of the literature and in vendor catalogs, the unqualified term refers to the albumin-binding version, while the version lacking the DAC group appears as modified GRF(1-29), mod GRF(1-29), or the same name with a without-DAC qualifier. Because one abbreviation has been applied to both materials, the only reliable way to identify a sample is to check the stated sequence and the presence of the linker.
Reconstitution is typically performed with sterile water or bacteriostatic water, added slowly against the vial wall. The resulting solution should be clear and colorless; cloudiness or visible particles suggest a problem with the material or the diluent. Once in solution, the peptide is less stable than the dry powder. Refrigerated storage at two to eight degrees Celsius is common for short-term holding, while freezing aliquots is described for longer periods.
Purity is most often assessed by reversed-phase high-performance liquid chromatography, reported as a percentage of total peak area. Identity is confirmed by mass spectrometry, which yields a molecular ion consistent with the expected sequence. Amino acid analysis and peptide mapping provide additional characterization. Reported purity values are method-dependent, so figures from different laboratories are not always directly comparable without details of column, gradient, and detection wavelength.
| Property | Value | Notes |
|---|---|---|
| Molecular class | Synthetic peptide | GHRH analog, not a steroid |
| Backbone length | 29 amino acids | Based on GRF(1-29) |
| Substitutions | Four positions | D-Ala2, Gln8, Ala15, Leu27 |
| Appearance | White to off-white powder | Typical lyophilized research material |
| Common synonyms | Modified GRF(1-29) | Usage varies between sources |
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.
Four amino acid substitutions separate the modified backbone from the parent GRF(1-29) sequence. These changes reduce recognition by dipeptidyl peptidase IV and related proteases, extending the interval before degradation. Development work in this area sought longer-acting GHRH analogs for endocrine investigation. Published descriptions treat the substitution set as a defining property of the core sequence, while the albumin-binding linker is described separately as an optional addition to that same backbone.
CJC-1295 is a synthetic peptide analog of growth hormone-releasing hormone, constructed on the 29-amino-acid fragment designated GRF(1-29). The name began as an internal development code during the 1990s and later spread through research supply catalogs and discussion forums. The molecule does not occur in nature; its sequence is engineered rather than isolated from tissue. Two related compounds are sold under this single label, and they differ by one appended chemical group that strongly influences how long the peptide remains in circulation.
The dividing feature between the two forms is a maleimide-based drug affinity complex, abbreviated DAC. In the DAC-bearing version, a linker attaches the peptide to serum albumin after administration, and that association slows removal from plasma. The version lacking DAC appears in catalogs as MOD GRF(1-29) or tetrasubstituted GRF(1-29). Because informal writing treats both as one item, comparisons drawn from such sources routinely blend measurements taken from two molecules with substantially different behavior.
Stability depends heavily on physical state. A lyophilized powder kept dry, desiccated, and shielded from light typically holds its integrity for months to years at minus twenty degrees Celsius, and longer at minus eighty. Once dissolved, the peptide becomes far more vulnerable, since peptide bond hydrolysis, oxidation of susceptible residues, and aggregation all proceed faster in solution. Buffers near neutral pH are generally gentler than strongly acidic or alkaline conditions. Repeated freeze-thaw cycles and exposure to air-liquid interfaces during vigorous mixing cause losses that are easy to overlook.
Verification matters because research peptides vary widely in quality. A certificate of analysis is only as reliable as the method behind it, and a single chromatographic trace reveals little about counter-ions, residual solvents, or water content. Independent laboratories commonly pair mass confirmation with chromatographic purity and, where relevant, quantify water along with acetate or trifluoroacetate content. Reported purity figures are not standardized across suppliers, so a stated value such as ninety-eight percent is not directly comparable unless the analytical method, column, and detection wavelength accompany it.
plastid Any of a class of membrane-bound organelles found in the cells of some eukaryotes such as plants and algae which are hypothesized to have evolved from endosymbiotic cyanobacteria; examples include chloroplasts, chromoplasts, and leucoplasts. Plastids retain their own circular chromosomes which replicate independently of the host cell's genome. Many contain photosynthetic pigments which allow them to perform photosynthesis, while others have been retained for their ability to synthesize unique chemical compounds.
=== Analogues === Retigabine is a bioisostere of flupirtine in which the pyridine ring has been replaced with a phenyl ring. Azetukalner (encukalner), pynegabine, and fluoxakalner are also analogues of flupirtine and retigabine.
Russian officials claimed that one person was killed in a Ukrainian drone strike in Belgorod Oblast. Canada imposed new sanctions on Russian individuals and entities for facilitating the illegal transfer of North Korean weapons, including ballistic missiles, for use in the invasion of Ukraine. The EU agreed to allow Ukraine to use the interest earned from seized Russian assets, totalling approximately 2.5 billion to 3 billion euros ($2.7 billion to $3.3 billion) annually, disbursed twice per year. Institutions will keep all interest earned between February 2022 and February 2024, possibly for reconstruction purposes, according to European Commission sources. More than 3,000 Ukrainian prisoners have applied to join the Ukrainian military.
Sources: en.wikipedia.org
== Screening == The United States Preventive Services Task Force stated, as of 2013, that there was insufficient evidence to recommend for or against screening for glaucoma. Therefore, there is no national screening program in the US. Screening, however, is recommended starting at age 40 by the American Academy of Ophthalmology. There is no screening program in the UK; however, opportunistic testing is recommended for at-risk groups, including free eye tests.
methylarsonite + glutathione disulfide + H2O Thus, the two substrates of this enzyme are methylarsonate and glutathione, whereas its 3 products are methylarsonite, glutathione disulfide, and H2O. This enzyme belongs to the family of oxidoreductases, specifically those acting on phosphorus or arsenic in donor with disulfide as acceptor. The systematic name of this enzyme class is gluthathione:methylarsonate oxidoreductase. This enzyme is also called MMA(V) reductase.
These increases in coagulation factors may contribute to the development of stroke (see under § Side effects), but a precise association cannot be made at this stage. In a variety of clinical studies upon which FDA approval is based, Neumega showed effectivity in reducing thrombocytopenia in oncologic patients treated with myelosuppressant chemotherapeutic drugs as measured by significantly decreased need of platelet transfusions. Neumega is manufactured and sold by Wyeth. The drug is formulated in single-use vials containing 5 mg of oprelvekin (specific activity approximately 8 million units/mg) as a sterile, lyophilized powder. The FDA approved the drug in 1997.
In July 2012, the government made a review of the mandatory death penalty applied to certain drug trafficking or murder offences. In the midst of this review, a moratorium was imposed on all the 35 pending executions in Singapore at that time (7 for murder and 28 for drug trafficking). During that period of the review of the mandatory death penalty, one convicted murderer, Pathip Selvan s/o Sugumaran, who made headlines for the violent murder of his girlfriend in 2008, won his appeal in October 2012 and was re-sentenced to 20 years' imprisonment for culpable homicide. Wang Zhijian, a Chinese national who committed the 2008 Yishun triple murders, was sentenced to death for a conviction of murder under Section 300(a) of the Penal Code in November 2012, and another unnamed death row convict died of natural causes while in prison. In November 2012, capital punishment laws in Singapore were revised such that the mandatory death penalty for those convicted of drug trafficking or murder was lifted under certain specific conditions. Judges were empowered with the discretion to sentence such offenders to life imprisonment with the possibility of parole after 20 years. These changes were approved by Parliament and set to take effect in January of the following year. In January 2013, the law was again amended to make the death penalty no longer mandatory for certain capital offences.
Sources: en.wikipedia.org
Tim Hortons Inc., known colloquially as Tim's, Timmies or Timmy's, is a Canadian multinational coffeehouse and restaurant chain with headquarters in Toronto, serving coffee, donuts, sandwiches, breakfast egg muffins and other fast-food items. It is Canada's largest quick-service restaurant chain, with 6,043 restaurants across 14 countries. The company was founded in 1964 in Hamilton, Ontario, by Canadian ice hockey player Tim Horton (1930–1974) and Jim Charade (1934–2009), after an initial venture in hamburger restaurants. In 1967, Horton partnered with investor Ron Joyce, who assumed control over operations after Horton died in 1974. Joyce expanded the chain into a multi-billion dollar franchise. Charade left the organization in 1966 and briefly returned in 1970 and 1993 through 1996. The Wendy's Company merged with Tim Hortons in 1995 and operated it under their flagship subsidiary until 2006. On August 26, 2014, Burger King agreed to merge with Tim Hortons for US$11.4 billion. The two chains became subsidiaries of Toronto-based holding company Restaurant Brands International on December 15, 2014.
Trump began a push for peace negotiations to end the Russia–Ukraine war. Trump's first foreign visit as president-elect was to Paris for the reopening of the Notre-Dame de Paris, during which he met with French president Emmanuel Macron and Ukrainian president Volodymyr Zelenskyy to discuss the war, and met with other European officials. In February 2025, Trump held phone calls with Russian president Vladimir Putin and with Zelenskyy that he said marked the beginning of negotiations. He threatened Ukraine with a suspension of U.S. military aid and Russia with sanctions and tariffs if he decided they were not negotiating in good faith. The U.S. sought a mineral resources agreement with Ukraine though was unwilling to offer postwar security guarantees for Ukraine in exchange. Negotiators reached a deal on the agreement but the agreement fell through after a contentious meeting between Trump and Zelenskyy in the Oval Office that ended when the Ukrainian delegation was abruptly asked to leave. Afterwards, the U.K. and France developed a proposal in which a "coalition of the willing" would provide security guarantees to Ukraine. The U.S. and Russia held a summit in Saudi Arabia for peace talks in February and U.S. held a summit with Ukraine the next month, during which Ukraine accepted a U.S.-proposed 30-day ceasefire. Putin did not accept the ceasefire, though on March 18 Russia agreed to a 30-day ceasefire only for strikes on energy infrastructure and in the Black Sea, which Ukraine agreed to.
=== Tumors === Th22 cells are involved in tumorigenesis in cases of hepatocellular carcinoma, liposarcoma or colon cancer, and affect tumor tissue in two different pathways. Overexpression of interleukin-22 (IL-22) or Th22 cells may result in the progression of cancer growth and cause malignant epithelial cell proliferation. However, physiological functions of Th22 cells are tissue repair and wound healing. Some studies have shown a possible anti-tumor effect of these cells, and normal interleukin-22 (IL-22) secretion leads to tissue repair.
=== Shock === Methylene blue increases blood pressure in people with vasoplegic syndrome (redistributive shock). It does not improve delivery of oxygen to tissues or decrease mortality. Methylene blue has been used in calcium channel blocker toxicity as a possible rescue therapy for distributive shock unresponsive to first-line agents. Limited to case reports, a 2024 review found low-quality evidence that methylene blue may reduce short-term mortality, duration of the need for vasopressors, and length of hospital stay.
However, the Polish government headed by the Law and Justice party maintained that the reforms were necessary due to the prevalence of corruption within the Polish judiciary and the continued presence of holdover Communist era judges. In October 2019, Poland's governing Law and Justice party (PiS) won parliamentary election, keeping its majority in the lower house. The second was centrist Civic Coalition (KO). The government of Prime Minister Mateusz Morawiecki continued. However, PiS leader Jarosław Kaczyński was considered the most powerful political figure in Poland although not a member of government. In July 2020, President Andrzej Duda, supported by PiS, was re-elected. Poland was one of neighbouring Ukraine's most ardent supporters after the 2022 Russian invasion of Ukraine. As of November 2022, Poland had received more than 1.5 million Ukrainian refugees since the beginning of the war. In September 2023, however, Poland said that it would stop supplying arms to Ukraine and instead focus on its own defense. Poland's decision to ban importing Ukrainian grain, in order to protect its own farmers, had caused tension between the two countries. In October 2023, the ruling Law and Justice (PiS) party won the largest share of the vote in the election, but lost its majority in parliament. In December 2023, Donald Tusk became the new Prime Minister to succeed Morawiecki, leading a coalition of three parliamentary groups made up of Civic Coalition, Third Way, and The Left. Law and Justice became the leading opposition party.
Sources: en.wikipedia.org
No. It is a laboratory-made analog of growth hormone-releasing hormone. The natural hormone is a 44-residue peptide, while the analog is built on a shorter 29-residue fragment.
The original material included a linker that binds serum albumin. A later variant removed that linker to reduce the duration of action. Catalogs and papers did not consistently adopt separate names, so both remain widely labeled with the same term.
The amino acid sequence and the presence or absence of the linker group. Mass measured by spectrometry gives an independent check that separates the two forms.
Cool, dark, and dry conditions are standard, with storage at minus twenty degrees Celsius or below. Desiccant and sealed vials limit moisture uptake. Repeated warming and cooling of the container is generally avoided.