GHRH analogue comes up often in conversation and rarely with the context attached. Here we lay out the basics in order, then work through the practical considerations.
Updated 2026-04-02. Numbers and descriptions here follow the published literature rather than marketing material.
The peptide backbone includes a D-alanine at position two, which resists cleavage by dipeptidyl peptidase IV, and several other substitutions that reduce degradation. Its molecular weight is roughly 3.4 kDa without the linker and about 3.6 kDa with it. The molecule is water soluble and is normally supplied as a lyophilized powder. Precise sequence and mass values depend on which variant is described, so technical documents usually state the exact form being referenced.
CJC-1295 is a synthetic peptide designed as a long-acting analogue of growth hormone-releasing hormone (GHRH). Its structure derives from the first 29 amino acids of native GHRH, a fragment often called GRF(1-29). Four substitutions were introduced to slow enzymatic breakdown and extend activity relative to the natural sequence. The compound was developed by ConjuChem as part of a broader effort to improve the pharmacokinetic profile of peptide hormones. It is studied in laboratory and clinical research settings rather than appearing as a naturally occurring substance.
Two related forms circulate in technical discussion under the same family name. The original version carries a drug affinity complex (DAC) that binds covalently to serum albumin after administration, and this linkage substantially extends circulation time. A second form, frequently written as modified GRF(1-29) or CJC-1295 without DAC, lacks that linker and clears much faster. The naming is a frequent source of confusion because the shorthand CJC-1295 can refer to either form depending on the source. Reports sometimes fail to specify which variant was studied.
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.
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.
| Property | Value | Notes |
|---|---|---|
| Molecular weight (no linker) | ~3.37 kDa | Calculated from peptide sequence |
| Molecular weight (with linker) | ~3.65 kDa | Includes albumin-binding moiety |
| Appearance | White to off-white powder | Typically lyophilized |
| Solubility | Soluble in water | Also dissolves in aqueous buffers |
| Common synonyms | Modified GRF(1-29), DAC:GRF | Usage varies by source |
Reports on this compound commonly follow serum growth hormone and insulin-like growth factor 1 across defined time windows. Protocols differ in sampling frequency, assay platform, and participant characteristics, which makes direct comparison between publications difficult. Some work focuses on pulsatile release patterns instead of average concentrations. Whether repeated exposure alters endogenous hormone rhythms over long periods remains an open question, and the formal literature is thinner than the volume of informal commentary implies.
Once in circulation, the peptide binds the growth hormone-releasing hormone receptor displayed on pituitary somatotroph cells. Receptor activation couples to Gs proteins, elevates intracellular cyclic AMP, and drives protein kinase A signaling inside the cell. That cascade increases discharge of growth hormone into the bloodstream. The analog therefore operates through a receptor pathway that already exists for the body's own releasing hormone, rather than through an engineered artificial target.
The compound emerged from work at a Canadian biotechnology firm in the early 2000s. Early human studies examined its effect on growth hormone and insulin-like growth factor 1 in healthy volunteers and in people with HIV-associated fat redistribution. Reports described sustained increases in both markers after a single injection. Development did not advance to regulatory approval, and the clinical programme was later discontinued. The molecule is now encountered mainly as a research chemical rather than a marketed medicine.
Two forms circulate in research settings and are frequently confused. One carries the drug affinity complex and is often written as CJC-1295 with DAC; the other lacks that group and is usually called modified GRF(1-29). The two share the same core sequence but differ sharply in how long they persist in blood. Products labelled only as CJC-1295 normally refer to the version carrying the complex. Documentation that omits the distinction leaves the intended molecule ambiguous.
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There will probably never be another Test match like this. The tension generated by the closeness and importance of the game, combined with the efforts of the protestors inside, outside and above the ground, made for an exhilarating and yet terrifying afternoon. The role of the NZ police also became more controversial as a result of the tour. The NZRFU constitution contained much high-minded wording about promoting the image of rugby and New Zealand, and generally being a benefit to society. In 1985 the NZRFU proposed an All Black tour of South Africa that remobilised New Zealand protesters. Two lawyers successfully sued it, claiming such a tour would breach its constitution. The High Court stopped the tour.
A few examples of character strength according to Character Strength and Virtues: A Handbook and Classification by Seligman and Peterson (2004) are bravery, integrity, citizenship, humility, prudence, gratitude, and hope, all of which are shown in the rise to recovery. Thirdly, the Meaningful Life is service and membership to positive organizations. Examples of positive organizations include family, workplace, social groups, and society in general. Membership of these groups fosters positive affect, while also promoting character strengths, which as seen in the Engaged Life, can aid in beating addiction.
Intravascular hemolysis describes hemolysis that happens mainly inside the vasculature. As a result, the contents of the red blood cell are released into the general circulation, leading to hemoglobinemia and increasing the risk of ensuing hyperbilirubinemia. Intravascular hemolysis may occur when red blood cells are targeted by autoantibodies, leading to complement fixation, or by damage by parasites such as Babesia. Additionally, thrombotic microangiopathy (TMA) can result in hemolysis of red blood cells. TMA is frequently observed in aHUS patients where clots form in the small vessels of the kidney resulting in damaged red blood cells as they attempt to pass through the restricted vessels.
Sources: en.wikipedia.org
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Sources: en.wikipedia.org
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Paraneoplastic pemphigus (PNP) is an autoimmune disorder stemming from an underlying tumor. It is hypothesized that antigens associated with the tumor trigger an immune response resulting in blistering of the skin and mucous membranes. While patients with malignant and benign tumors are both at risk, malignancy is associated with high mortality rates (near 90%). Current treatment focuses on general wound healing and administering corticosteroids, which has not demonstrated a high success rate. Recent research developments aim to treat the underlying tumor in order to alleviate the symptoms of PNP.
In March 2002, Yorkshire merged with Tricon Global Restaurants to form Yum! Brands. A few weeks later, Malaysian company KUB took over the franchises in Southeast Asia, aiming to restore its prestige in Malaysia alone and increasing its market share. Subsequently, in January 2003, Yum! announced that A&W and Long John Silver's would move their operational base from Lexington to Louisville, as operating the chains from Lexington was considered "impractical and cost-inefficient", preferring to operate all of its chains from Louisville. Under Yum's management, A&W added franchises with a nostalgic look and modern technology. They have a carhop design with drive-thrus, and some have picnic tables. The chain didn't seek to compete against McDonald's, instead preferring to carve up its own niche. 2004 saw the return of the Papa Burger brand at a restaurant in Dayton - the Burger Family brand originally retired in the United States in the 1980s, being replaced by the Deluxe Burgers - and was the only name of the old line that was reinstated, with the other burgers having new names. In September 2001 the Singapore branch was taken over by KUB, who also oversaw the restaurants in Malaysia. At the time of takeover, it had twelve restaurants, but by November 2002, the number had dwindled to eight. Its restaurants had already been downgraded: the Ang Mo Kio restaurant shut down, the Tampines restaurant refused to repair its air conditioning systems, and cable TV was switched off in all outlets. Food sales had decreased by about 5-12%.
Sources: en.wikipedia.org
No. It is a synthetic analogue modeled on the first 29 residues of human GHRH. The substitutions and any linker are laboratory modifications rather than features of the endogenous peptide.
Early development used the albumin-binding form, and a shorter variant was later discussed under the same label. Because the two differ in half-life and handling, ambiguity arises whenever a source omits the variant designation.
The compound derives from that fragment but is not identical to it. The parent fragment lacks the stabilizing substitutions, so its degradation rate and duration of action differ noticeably.
No. It is a laboratory-synthesized analog built on a fragment of the natural hormone. The natural peptide is shorter-lived and lacks the stabilizing substitutions found in the synthetic version.