If you have been reading about GHRH receptor and want a single page that covers the useful parts, this is it: definitions, context, how it is studied, and the questions that come up repeatedly.
Last reviewed on 2026-01-01. Where a claim depends on a specific study, the study is described rather than over-claimed.
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.
Studies in this area generally track growth hormone pulses, insulin-like growth factor 1 concentrations, and occasionally body composition endpoints. Most published human data come from early, small trials, and questions about long-term effects remain open. Whether repeated exposure alters pituitary responsiveness over time is not settled. Analytical work relies on immunoassays for the hormones and on mass spectrometry for the peptide itself, because the two measurements answer different questions.
Binding of the peptide to the growth hormone-releasing hormone receptor on pituitary somatotrophs triggers a G protein coupled cascade that raises cyclic AMP and opens calcium channels. The result is greater secretion of growth hormone into the bloodstream. Because the peptide acts at the same receptor as the natural hypothalamic hormone, its effect is amplified pulse size rather than an entirely separate release pathway. Receptor binding alone does not determine the response, since somatostatin tone and other inputs modulate the final output.
| 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 |
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.
Downstream of growth hormone, the liver and other tissues increase production of insulin-like growth factor 1, a mediator of many growth-promoting effects. Studies have documented elevated levels of both hormones after dosing, and the rise from the long-acting form persists longer than that produced by shorter-acting analogues. What remains unclear is whether sustained elevation of these markers translates into meaningful clinical benefit, and whether prolonged exposure carries risks that short trials could not detect.
CJC-1295 acts at the growth hormone-releasing hormone receptor, a G-protein-coupled receptor found on somatotroph cells in the anterior pituitary. Binding triggers a rise in cyclic AMP and calcium entry, which promotes release of stored growth hormone. Because the peptide mimics the body's own releasing hormone, it amplifies existing secretory pulses rather than driving continuous output. The size of the response therefore depends partly on the subject's own hormonal rhythm and feedback state.
The hCG present in a woman's urine or blood is used to confirm pregnancy. Urine-based pregnancy tests detect hCG in the urine, while blood-based pregnancy tests measure the level of hCG in the blood. The presence of hCG in a woman's body indicates that a fertilized egg has implanted in the uterus and the placenta has started to form. 10 days after fertilization, significant hCG can be detected from woman's blood sample. The levels of hCG in the body increase rapidly in the first few weeks of pregnancy, doubling every 48–72 hours. The highest level of hCG is reached in week 10 or week 11, later the levels of hCG can be used to estimate the age of the fetus and monitor the progress of the pregnancy.
Blood loss warranting surgery is 1–1.5 L of immediate chest tube drainage or ongoing bleeding of 200-300 mL/hr. Persistent air leak is suggestive of tracheobronchial injury which will not heal without surgical intervention. Depending on the severity of the person's condition and if cardiac arrest is recent or imminent, the person may require surgical intervention in the emergency department, otherwise known as an emergency department thoracotomy (EDT). However, not all gunshot to the chest require surgery. Asymptomatic people with a normal chest X-ray can be observed with a repeat exam and imaging after 6 hours to ensure no delayed development of pneumothorax or hemothorax. If a person only has a pneumothorax or hemothorax, a chest tube is usually sufficient for management unless there is large volume bleeding or persistent air leak as noted above. Additional imaging after initial chest X-ray and ultrasound can be useful in guiding next steps for stable people. Common imaging modalities include chest CT, formal echocardiography, angiography, esophagoscopy, esophagography, and bronchoscopy depending on the signs and symptoms.
== Laboratory methods == Hemoglobin A2 has a crucial role in screening and diagnosis of the beta-thalassemia trait. Various laboratory methods exist, each providing different outcomes of accuracy. The different quantification methods of HbA2 relies on how effective it can be separated from other hemoglobin variants. Various laboratory methods are employed, such as cation exchange high-performance liquid chromatography (HPLC), microcolumn chromatography, and cellulose acetate electrophoresis with elution. At first, cellulose acetate electrophoresis was utilized to measure HbA2, but this process proved to be too time-consuming and labor-intensive, making it impractical for large examinations or samples. Similar efficiency issues were encountered with other methods like IEF and scanning densitometry. These two methods separate proteins based on their isoelectric point. Chromatography, another commonly used method, demonstrated reliability in diagnosing individuals with the beta carrier gene. However, this method was also time-consuming and inefficient when dealing with large sample numbers. Out of the various methods, the one that accurately measures HbA2 is HPLC. It is a reliable technique because it's able to accurately determine HbA2, HbF, and Hb variants. The various different Hb variants include: HbS, HbE, Hb Lepore, HbC, HbD and HbO-Arab. There are several different factors that can contribute to the quantification of HbA2 to be inaccurately measured.
== See also == Aroma compound Criteria air contaminants Fugitive emission Non-methane volatile organic compound Organic compound Trichloroethylene Vapor intrusion VOC contamination of groundwater Volatile Organic Compounds Protocol
Semiconductors, metals, and ceramics are used today to form highly complex systems, such as integrated electronic circuits, optoelectronic devices, and magnetic and optical mass storage media. Semiconductors are a traditional example of these types of materials. They are materials that have properties that are intermediate between conductors and insulators. Their electrical conductivities are very sensitive to the concentration of impurities, which allows the use of doping to achieve desirable electronic properties. Hence, semiconductors form the basis of the traditional computer. This field also includes new areas of research such as superconducting materials, spintronics, metamaterials, etc. The study of these materials involves knowledge of materials science and solid-state physics or condensed matter physics.
Sources: en.wikipedia.org
It is unknown whether intensive or conventional blood glucose control is better for diabetic foot ulcer healing. A 2020 Cochrane systematic review evaluated the effects of nutritional supplements or special diets on healing foot ulcers in people with diabetes. The review authors concluded that it's uncertain whether nutritional interventions have an effect on foot ulcer healing and that more research is needed to answer this question. Skin grafting and tissue replacements can help improve the healing of diabetic foot ulcers. A 2021 systematic review concluded that there was no strong evidence about the effects of psychological therapies on diabetic foot ulcer healing and recurrence.
== Export == Sinokrot holding has expanded their businesses of medjoul dates (Pal Gardens Agriculture Company) to the european markets. Building relationships with big European Dates distributors such as Dadelskopen.
In the 1970s, biscuit manufacturers began using micro-aeration to process chocolate for moulded products. This was a cost-saving measure: with less chocolate, the same volume of coated biscuit could be maintained. In 1981 or 1983, Cadbury released Wispa, an aerated chocolate with a more chunky shape than Aero bars, made using a secret, non-patented process. The launch of Wispa was successful, but it soon encountered manufacturing difficulties and was temporarily withdrawn from the market. While Wispa was off the market, Rowntree's developed and launched a chunky Aero which they successfully launched and was still being sold as of 2008. Wispa was discontinued in the early 2000s so Cadbury could bring in a new aerated chocolate product aligned with the Cadbury Dairy Milk brand: Dairy Milk Bubbly. Following an internet campaign in 2007, Cadbury reintroduced Wispa. Today, Aero is manufactured by Nestlé, the brand having been acquired by Nestlé during a 1988 takeover of Rowntree's. As of 2023, other brands of aerated chocolate includes Mirage and Galaxy.
His season high for strikeouts that year was just seven, achieved in a complete game, four-hit, 4–1 victory over Chicago on September 10. In 30 games (29 starts), he had a 10–14 record, 80 strikeouts, and 91 walks in 189+2⁄3 innings pitched. His 14 losses tied with Bob Friend, Roberts, and Curt Simmons for third in the league (behind Kline's 16 and Johnny Podres's 15), but his 3.42 ERA ranked eighth. Sports Illustrated reported, "Mizell and [Larry] Jackson had impressive ERAs between them but lost more than they won." After working out at the YMCA across from Busch Stadium during the 1958–59 offseason, Mizell showed a stronger fastball in 1959. He did not pitch at the beginning of spring training as he negotiated for a new contract, but he wound up settling for $17,000, his salary each of the previous two seasons. On May 15, he had a season-high 10 strikeouts, allowing just four hits and two unearned runs in an 8–2 victory over the Phillies. He had eight strikeouts in the second game of a doubleheader against Philadelphia on June 7, limiting the Phillies to five hits in a 2–0 shutout victory. In the first half of the season, he enjoyed a 9–3 record and a 3.05 ERA. He was named to both National League All-Star teams in 1959 (in those days, two All-Star games were played in a season). However, he did not appear in either game. The second half of the season saw him post a 4–7 record and a 5.94 ERA. On July 19, 1959, Mizell allowed three runs over seven innings to defeat the Braves, 9–5.
Sources: en.wikipedia.org
All nanotubes are expected to be very good thermal conductors along the tube, exhibiting a property known as "ballistic conduction", but good insulators lateral to the tube axis. Measurements show that an individual SWNT has a room-temperature thermal conductivity along its axis of about 3500 W·m−1·K−1; compare this to copper, a metal well known for its good thermal conductivity, which transmits 385 W·m−1·K−1. An individual SWNT has a room-temperature thermal conductivity lateral to its axis (in the radial direction) of about 1.52 W·m−1·K−1, which is about as thermally conductive as soil. Macroscopic assemblies of nanotubes such as films or fibres have reached up to 1500 W·m−1·K−1 so far. Networks composed of nanotubes demonstrate different values of thermal conductivity, from the level of thermal insulation with the thermal conductivity of 0.1 W·m−1·K−1 to such high values. That is dependent on the amount of contribution to the thermal resistance of the system caused by the presence of impurities, misalignments and other factors. The temperature stability of carbon nanotubes is estimated to be up to 2800 °C in vacuum and about 750 °C in air. Crystallographic defects strongly affect the tube's thermal properties. Such defects lead to phonon scattering, which in turn increases the relaxation rate of the phonons. This reduces the mean free path and reduces the thermal conductivity of nanotube structures. Phonon transport simulations indicate that substitutional defects such as nitrogen or boron will primarily lead to the scattering of high-frequency optical phonons.
==== Companion of the Order of St Michael and St George (CMG) ==== Jennifer Elizabeth Anderson, Director, Consular and Crisis, Foreign, Commonwealth and Development Office. For services to British Foreign Policy and to British Nationals Overseas. Zamir Nicholas Catasaras, Director General for Russia and Ukraine, Cabinet Office. For services to British Foreign Policy. Roger James Coventry, Criminal Justice Adviser. For services to Justice and Stability overseas. Colin Mark Evans, Director General, Foreign, Commonwealth and Development Office. For services to National Security. Dr Fiona Hill, Senior Fellow, Brookings Institution, Washington D.C., United States of America. For services to International Relations. Dr Rurik Miles Marsden, , Development Director, British Embassy Yangon, Myanmar. For services to International Development. Susanna Mary Davies Moorehead, lately Chair, Development Assistance Committee, The Organisation for Economic Co-operation and Development (OECD). For services to International Development and Diplomacy. Jane Anne Nelson, Director, Corporate Responsibility Initiative, Kennedy School of Government, Harvard University, United States of America. For services to Business and to Sustainability. Dr Sara Pantuliano, Chief Executive, ODI. For services to Peacebuilding, to Humanitarian Assistance and to International Development. Simon Penny, lately H.M. Trade Commissioner for the Middle East and Pakistan and H.M. Consul General to Dubai and the Northern Emirates. For services to International Trade and Investment.
==== Quantitative real-time polymerase chain reaction (qRT-PCR) ==== A more sensitive approach to transcript analysis of a gene is quantitative real-time polymerase chain reaction (qRT-PCR), which has also seen action in quantifying protease mRNA levels. Again, total RNA is extracted and used to generate cDNA for PCR amplification. As long as there is a specific primer for a protease, protease inhibitor, or interacting molecule, qRT-PCR can serve as a highly sensitive method to detect minuscule amounts of mRNA copy numbers per cell. A drawback that separates it from microarray analysis is its limited scope: a microarray can handle parallel analysis of multiple genes while qRT-PCR must amplify one mRNA for analysis at a time. It also suffers from the same limitation of microarray analysis regarding the lack of correlation between transcript and protein levels. However, its sensitivity lends it as a useful tool in validating microarray findings and quantifying specific protease transcripts of interest.
== Conferences == Cold fusion researchers were for many years unable to get papers accepted at scientific meetings, prompting the creation of their own conferences. The International Conference on Cold Fusion (ICCF) was first held in 1990 and has met every 12 to 18 months since. Attendees at some of the early conferences were described as offering no criticism to papers and presentations for fear of giving ammunition to external critics, thus allowing the proliferation of crackpots and hampering the conduct of serious science. Critics and skeptics stopped attending these conferences, with the notable exception of Douglas Morrison, who died in 2001. With the founding in 2004 of the International Society for Condensed Matter Nuclear Science (ISCMNS), the conference was renamed the International Conference on Condensed Matter Nuclear Science—for reasons that are detailed in the subsequent research section above—but reverted to the old name in 2008. Cold fusion research is often referenced by proponents as "low-energy nuclear reactions", or LENR, but according to sociologist Bart Simon the "cold fusion" label continues to serve a social function in creating a collective identity for the field. Since 2006, the American Physical Society (APS) has included cold fusion sessions at their semiannual meetings, clarifying that this does not imply a softening of skepticism. Since 2007, the American Chemical Society (ACS) meetings also include "invited symposium(s)" on cold fusion.
DiCaprio's second role in 2010 was in Christopher Nolan's critically acclaimed ensemble science-fiction film Inception. Inspired by the experience of lucid dreaming and dream incubation, the film features Dom Cobb (DiCaprio), an "extractor" who enters the dreams of others to obtain information that is otherwise inaccessible. Cobb is promised a chance to regain his old life in exchange for planting an idea in a corporate target's mind. DiCaprio was fascinated with the idea of a "dream-heist" and the potential for his character to manipulate his dreamworld and impact his real life. Made on a budget of $160 million, the film grossed $836 million worldwide to become DiCaprio's second highest-grossing film. To star in this film, DiCaprio agreed to a pay cut from his $20 million fee and opted for a share in first-dollar gross points, which entitled him to a percentage of the cinema ticket sales. The risk proved fruitful, as DiCaprio earned $50 million from the film, becoming his highest payday yet. DiCaprio starred as J. Edgar Hoover in Clint Eastwood's J. Edgar (2011). A biopic about Hoover, the film focuses on his career as an FBI director, including an examination of his private life as an alleged closeted homosexual. Critics felt that the film lacked coherence overall but commended DiCaprio's performance. Roger Ebert praised DiCaprio's ability to bring depth and nuance to the character, suggesting that his performance conveyed aspects of Hoover's personality that were possibly even unknown to the man himself.
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.
Reported values cluster in the range of several days, reflecting slow release from the albumin complex. Estimates differ across species and assay platforms. The figure describes circulation time in study settings rather than a fixed property.