This is a working overview of CJC-1295, written for readers who want more than a one-paragraph summary but less than a textbook.
Reviewed 2026-05-30. Anything still debated is marked as such rather than presented as settled.
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.
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.
At the pituitary, the peptide binds the growth hormone-releasing hormone receptor on somatotroph cells. Receptor activation raises intracellular cyclic AMP and triggers release of stored growth hormone. Somatostatin and other hypothalamic signals modulate this response. Negative feedback from insulin-like growth factor 1 also influences output. The same regulatory architecture operates with the native hormone. Whether the synthetic analog alters feedback dynamics over repeated exposure remains an open question. Most published receptor work uses cell models rather than intact human systems.
CJC-1295 is a synthetic peptide belonging to the growth hormone-releasing hormone analog family. It comprises twenty-nine amino acid residues derived from the N-terminal region of natural GHRH. The molecule incorporates several non-natural substitutions that increase resistance to enzymatic degradation. These modifications extend its activity compared with the native hormone fragment. Researchers use it to study pituitary growth hormone secretion in laboratory and clinical settings. This compound is distinct from native GHRH in its stability profile.
| 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 |
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.
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.
Two related forms appear under the CJC-1295 name. The simpler analogue, commonly written as modified GRF(1-29), carries the four substitutions but no additional conjugation. The second form attaches a maleimidopropionic acid linker to a lysine residue, a modification frequently called the drug affinity complex. That linker reacts with the free thiol on serum albumin to form a covalent bond. Because albumin has a long residence time in blood, the conjugated peptide stays in circulation far longer than the unconjugated analogue.
Receptor level activity follows the canonical GHRH pathway. The peptide binds the GHRH receptor, a class B G protein coupled receptor on somatotroph cells of the anterior pituitary. Binding raises intracellular cyclic AMP, which promotes calcium entry and the release of growth hormone into the bloodstream. Because the molecule acts at the same receptor as the endogenous hormone, its effect is superimposed on the natural pulsatile rhythm rather than replacing it. Whether sustained receptor occupation leads to desensitization is not fully settled.
CJC-1295 belongs to a class of synthetic peptides modeled on growth hormone releasing hormone, a forty-four amino acid signal produced by the hypothalamus. The compound is built from the first twenty-nine residues of the natural sequence, with four substitutions introduced at positions 2, 8, 15 and 27. These changes were designed to slow enzymatic breakdown while preserving receptor activation. The result is a peptide that is shorter than native GHRH and considerably more resistant to ordinary clearance pathways in circulation.
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.
Characterization of this peptide relies on a small set of routine techniques. Reversed-phase high-performance liquid chromatography separates the target from truncated or oxidized by-products and yields a purity estimate when paired with ultraviolet detection near 214 nanometers. Mass spectrometry, either electrospray coupled to liquid chromatography or matrix-assisted laser desorption, confirms that the observed mass matches the value calculated for the expected sequence. Amino acid analysis, and enzymatic digestion followed by fragment mapping, are used when the sequence itself rather than the mass requires verification.
CJC-1295 belongs to a family of synthetic peptides modeled on growth hormone-releasing hormone, the hypothalamic signal that prompts the pituitary to release growth hormone. The compound is built from the first twenty-nine amino acids of the natural human sequence, a fragment that retains full receptor binding capacity. Native growth hormone-releasing hormone is degraded quickly in circulation, so the fragment alone has limited practical value. Early work therefore focused on chemical modifications that preserve receptor binding while slowing enzymatic breakdown. The result is a molecule described in the literature as a long-acting analog of the natural hormone.
Clinical misuse by healthcare professionals is another contributor to increased antimicrobial resistance. Studies done in the US show that the indication for treatment of antibiotics, choice of the agent used, and the duration of therapy was incorrect in up to 50% of the cases studied. In 2010 and 2011 about a third of antibiotic prescriptions in outpatient settings in the United States were not necessary. Another study in an intensive care unit in a major hospital in France has shown that 30% to 60% of prescribed antibiotics were unnecessary. These inappropriate uses of antimicrobial agents promote the evolution of antimicrobial resistance by supporting the bacteria in developing genetic alterations that lead to resistance. According to research conducted in the US that aimed to evaluate physicians' attitudes and knowledge on antimicrobial resistance in ambulatory settings, only 63% of those surveyed reported antibiotic resistance as a problem in their local practices, while 23% reported the aggressive prescription of antibiotics as necessary to avoid failing to provide adequate care. This demonstrates that many doctors underestimate the impact that their own prescribing habits have on antimicrobial resistance as a whole. It also confirms that some physicians may be overly cautious and prescribe antibiotics for both medical or legal reasons, even when clinical indications for use of these medications are not always confirmed. This can lead to unnecessary antimicrobial use, a pattern which may have worsened during the COVID-19 pandemic.
The 550-metre (1,804 ft) Crystal Palace pneumatic railway was exhibited at the Crystal Palace in 1864. This was a prototype for a proposed Waterloo and Whitehall Railway that would have run under the River Thames linking Waterloo and Charing Cross. Digging commenced in 1865 but was halted in 1868 due to financial problems. In 1867 at the American Institute Fair in New York, Alfred Ely Beach demonstrated a 100-foot (30 m) long, 6-foot (1.8 m) diameter pipe that was capable of moving 12 passengers plus a conductor. One year after New York City's first-ever elevated rail line went into service; in 1869, the Beach Pneumatic Transit Company of New York secretly constructed a 312-foot (95 m) long, 8.9-foot (2.7 m) diameter pneumatic subway line under Broadway, to demonstrate the possibilities of the new transport mode. The line only operated for a few months, closing after Beach was unsuccessful in getting permission to extend it – Boss Tweed, a corrupt influential politician, did not want it to go ahead as he was intending to personally invest into competing schemes for an elevated rail line.
=== Cocaine === Carlezon et al. performed several experiments to validate this model. They found that, when mice were injected with cocaine, they preferred to be in the place where they were injected (showed stronger place preference) significantly more than control mice (injected with saline) did. However, in mice overexpressing CREB under a constitutive promoter, place aversion was observed. This indicates that increasing CREB reverses the positive effects of cocaine. Northern blot analysis several days after CREB overexpression showed a marked increase in dynorphin mRNA in the nucleus accumbens. Blocking KORs with an antagonist (nor-BNI) blocked the aversive effects caused by CREB overexpression. Thus, cocaine use ultimately appears to lead to an increase in the transcription of prodynorphin mRNA. Dynorphin inhibits dopamine release, which could account the reinforcing properties of cocaine. There is also evidence suggesting that increased amounts of dynorphin can protect humans from cocaine addiction. According to research at Rockefeller University, the gene for dynorphin is present in two versions: a “high output” and a “low output” functional variation. The high output functional variation of the gene contains polymorphisms in the promoter regions that are speculated to cause it to produce more copies of dynorphin mRNA, which would give people carrying this variation a “built-in defense system” against drug addiction.
Gateway Distriparks Limited is an Indian logistics company based in Mumbai with three business verticals: container freight stations (CFS), inland container depots (ICD) with rail movement and cold chain storage and logistics. The company was founded in April 1994 and originally promoted by Newsprint Trading & Sales Corporation (NTSC), CWT Distribution Limited, NUR Investment and Trading Pvt. Ltd., and Intercontinental Forest Products Pte. Ltd. (IFP) as a joint venture company to conduct the business of warehousing, container freight stations and all related activities. As of November 2015, Prism International Private Limited (same group as NTSC) is the sole promoter of the company.
Typically, the higher the temperature the kiln operates at, the larger amount of emissions are produced (per pound of water removed). This is especially true in the drying of thin veneers and high-temperature drying of softwoods.
Sources: en.wikipedia.org
== Biological function == In 1962, J.C. Watkins reported synthesizing NMDA, an isomer of the previously known N-Methyl-DL-aspartic-acid. NMDA is a water-soluble D-alpha-amino acid — an aspartic acid derivative with an N-methyl substituent and D-configuration — found across Chordates from lancelets to mammals. At homeostatic levels NMDA plays an essential role as a neurotransmitter and neuroendocrine regulator. At increased but sub–toxic levels NMDA becomes neuroprotective. In excessive amounts NMDA is an excitotoxin. Behavioral neuroscience research utilizes NMDA excitotoxicity to induce lesions in specific regions of an animal subject's brain or spinal cord to study behavioral changes. The mechanism of action for the NMDA receptor is a specific agonist binding to its NR2 subunits, and then a non-specific cation channel is opened, which can allow the passage of Ca2+ and Na+ into the cell and K+ out of the cell. Therefore, NMDA receptors will only open if glutamate is in the synapse and concurrently the postsynaptic membrane is already depolarized - acting as coincidence detectors at the neuronal level. The excitatory postsynaptic potential (EPSP) produced by activation of an NMDA receptor also increases the concentration of Ca2+ in the cell. The Ca2+ can in turn function as a second messenger in various signaling pathways. This process is modulated by a number of endogenous and exogenous compounds and plays a key role in a wide range of physiological (such as memory) and pathological processes (such as excitotoxicity).
=== Emotional responses === Every emotional response has a behavioral, an autonomic, and a hormonal component. The hormonal component includes the release of adrenaline, an adrenomedullary response to stress controlled by the sympathetic nervous system. The major emotion studied in relation to adrenaline is fear. In an experiment, subjects who were injected with adrenaline expressed more negative and fewer positive facial expressions to fear films compared to a control group. These subjects also reported a more intense fear from the films and greater mean intensity of negative memories than control subjects. The findings from this study demonstrate that there are learned associations between negative feelings and levels of adrenaline. Overall, the greater amount of adrenaline is positively correlated with an aroused state of negative emotions. These findings can be an effect in part that adrenaline elicits physiological sympathetic responses, including an increased heart rate and knee shaking, which can be attributed to the feeling of fear regardless of the actual level of fear elicited from the video. Although studies have found a definite relation between adrenaline and fear, other emotions have not had such results. In the same study, subjects did not express a greater amusement to an amusement film nor greater anger to an anger film. Similar findings were also supported in a study that involved rodent subjects that either were able or unable to produce adrenaline.
=== Economic considerations === The cost-effectiveness of circumcision has been studied to determine whether a policy of circumcising all newborns or a policy of promoting and providing inexpensive or free access to circumcision for all adult men who choose it would result in lower overall societal healthcare costs. As HIV/AIDS is an incurable disease that is expensive to manage, significant effort has been spent studying the cost-effectiveness of circumcision to reduce its spread in parts of Africa that have a relatively high infection rate and low circumcision prevalence. Several analyses have concluded that circumcision programs for adult men in Africa are cost-effective and in some cases cost-saving. In Rwanda, circumcision has been found to be cost-effective across a wide range of age groups from newborn to adult, with the greatest savings achieved when it is performed in the newborn period due to the lower cost per procedure and greater timeframe for HIV infection protection. Circumcision to prevent HIV transmission in adults has also been found to be cost-effective in South Africa, Kenya, and Uganda, with cost savings estimated in the billions of US dollars over 20 years. Hankins et al. (2011) estimated that a $1.5 billion investment in circumcision for adults in 13 high-priority African countries would yield $16.5 billion in savings.
== Name == Cold noodles in Chinese cuisine are referred to as liángmiàn (凉面, "chilled noodles"). The term lěngmiàn (冷面, "cold noodles") is mainly associated with Korean-style cold noodles (naengmyeon), which are popular in Northeast China, especially the Yanji-style cold noodles (延吉冷面), a dish of the ethnic Korean communities of the region. Although kǎolěngmiàn contains the word lěngmiàn, the dish is not directly derived from Korean cold noodles. Rather, it developed in Northeast China from starch noodle sheets used in the production of Korean-style cold noodles in the region. As these sheets began to be mass-produced and sold cheaply, street vendors used them to create a grilled snack cooked on charcoal stoves or iron griddles. Vendors commonly market the dish under names such as "Northeast grilled cold noodles" (东北烤冷面), "Heilongjiang grilled cold noodles" (黑龙江烤冷面), and sometimes "Harbin grilled cold noodles" (哈尔滨烤冷面), despite the dish not having originated in Harbin. It is also sometimes marketed as "Korean grilled cold noodles" (朝鲜烤冷面 / 韩国烤冷面) because of its association with Korean-style cold noodles (lěngmiàn) in the name, even though grilled cold noodles themselves did not originate in Korea.
=== Storage === Dependent on the storage conditions, garlic powder generally lasts in good condition up to 4 years. Manufactured garlic powders have a 'best before' date printed on them to provide an estimate for how long the powder will be in peak condition for in respect to flavor and texture. Garlic powder must be stored in a cool, dry place, to avoid clumping of the powder. If powder is exposed to moisture or heat, it could cause the product to harden or clump.
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.
It is a synthetic peptide modeled on growth hormone-releasing hormone. The molecule is used in research on pituitary growth hormone secretion. It differs from the natural hormone through several stabilizing substitutions.