This is a working overview of albumin conjugate, written for readers who want more than a one-paragraph summary but less than a textbook.
Reviewed 2026-03-26. Anything still debated is marked as such rather than presented as settled.
Two forms circulate under the CJC-1295 name, and they differ by a single appended group. The version without a drug affinity complex carries four substitutions along the peptide chain, including a D-alanine near the amino terminus and replacements at three other positions. These changes block the enzyme dipeptidyl peptidase IV and remove a methionine residue that is prone to oxidation. The modified fragment is frequently labeled MOD GRF 1-29. Naming conventions are inconsistent across informal sources, which is a common source of confusion.
The second form adds a maleimide-bearing linker to the lysine at the carboxyl end. This group reacts with cysteine-34 on circulating serum albumin, forming a covalent bond that keeps the peptide in the bloodstream for far longer. ConjuChem developed the molecule as a way to extend the action of a peptide without frequent administration. The albumin attachment is the defining structural feature of the drug affinity complex version. Whether continuous exposure produces effects distinct from shorter pulses remains an unresolved research question.
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 |
|---|---|---|
| Target receptor | GHRH receptor (GHRHR) | Expressed on pituitary somatotrophs |
| Primary action | Stimulates growth hormone release | Amplifies pulse size |
| Half-life, albumin-binding form | Several days as reported | Slow release from albumin complex |
| Half-life, unmodified analog | About 30 minutes in animal estimates | Cleared by proteases and filtration |
| Common analytical approach | LC-MS/MS for peptide, immunoassay for hormones | Methods answer different questions |
Clearance profiles diverge sharply between the two versions. The albumin-binding molecule stays in plasma for several days, whereas the unmodified analog is largely gone within about half an hour in reported work. Cleavage by dipeptidyl peptidase IV is a major contributor to the short life of the unmodified sequence. These gaps mean the two versions cannot be substituted for each other in study design or in reading results side by side.
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.
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.
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.
The distinguishing feature of the DAC form is a maleimide-containing group that reacts with the free thiol of cysteine-34 on human serum albumin. This reaction forms a covalent bond without enzymatic assistance, and it takes place after the peptide enters the bloodstream. Because albumin is abundant and long-lived, the attached peptide is carried through circulation far longer than an unmodified fragment would survive. The chemistry is a deliberate pharmacokinetic strategy rather than a change to receptor activity.
Enzymatic protection is a separate mechanism from plasma protein binding. The four substitutions in the backbone reduce recognition by dipeptidyl peptidase IV, which normally cleaves the natural hormone within minutes. Without the reactive group, this resistance still yields only a short window of activity, generally reported in the range of tens of minutes. With it, reported half-lives in early human work extended to several days. The size of that gap is the main practical distinction between the two materials.
Both forms act at the pituitary receptor for growth hormone-releasing hormone and increase growth hormone output, which in turn raises insulin-like growth factor 1. A long-acting analog produces sustained rather than pulsatile stimulation, and the physiological consequences of that pattern are not fully settled. Published human data on the extended form remain limited, and much of what circulates in discussion traces to early company reports rather than independent replication. How sustained exposure affects normal feedback remains an open question.
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 attached maleimide group explains the unusual duration of the DAC version. After injection it reacts with the thiol of cysteine-34 on serum albumin, forming a stable covalent bond. The resulting conjugate is too large for rapid kidney filtration and is shielded from many peptidases. Reported half-lives for this form reach several days, whereas the version without the group is cleared in roughly half an hour. That gap is the main pharmacological difference between the two.
== Council for Scientific and Industrial Research (CSIR) == Immediately following Prime Minister Billy Hughes' 22 December 1915 "National Laboratory Conference" announcement at a Melbourne University luncheon, the British Science Guild sent the Prime Minister a copy of its (hitherto ignored) 1914 Report, with Robertson's (1913) Report on the Scope and Administration of an Institute for Scientific Research in Australia (BR.13) appended to it. The formal gathering was convened in Melbourne on 5 January 1916; and a Commonwealth Advisory Council of Science and Industry was established, "with over twenty members representing a cross-section of scientific, state, and business interests". On 12 December 1916, the Council's Acting Secretary, Gerald Lightfoot, submitted his Memorandum on the Organization of Scientific Research Institutions in the United States of America (GL.1), to the Council to send on to the Prime Minister. On 14 September 1920, an Institute of Science and Industry, with Sir George Knibbs as its Director, was established by the Institute of Science and Industry Act 1920 (CA.1). On 21 June 1926, the Council for Scientific and Industrial Research (CSIR) was created by the Science and Industry Research Act 1926 (CA.2). The Council consisted of eleven members: three Commonwealth nominees, who formed the Executive Committee (and one of whom would be appointed chairman), and, in addition to the six State chairmen, another two co-opted members.
If it is impossible to say the sound without fogging a nasal mirror, there is an air leak, reasonable evidence of poor palatal closure. Speech is often unclear due to the inability to pronounce certain sounds. One of the surgical treatments for velopalatal insufficiency involves tailoring the tissue from the back of the throat and using it to purposefully cause partial obstruction of the opening of the nasopharynx. This may actually cause OSA syndrome in susceptible individuals, particularly in the days following surgery, when swelling occurs (see below: Special Situation: Anesthesia and surgery). Finally, patients with OSA are at an increased risk of many perioperative complications when they are present for surgery, even if the planned procedure is not on the head and neck. Guidelines to reduce the risk of perioperative complications have been published.
The English word "organ" dates back to the twelfth century, referring to any musical instrument. By the late 14th century, the musical term's meaning had narrowed to refer specifically to the keyboard-based instrument. At the same time, a second meaning arose, in reference to a "body part adapted to a certain function". Plant organs are made from tissue composed of different types of tissue. The three tissue types are ground, vascular, and dermal. When three or more organs are present, it is called an organ system. The adjective visceral, also splanchnic, is used for anything pertaining to the internal organs. Historically, viscera of animals were examined by Roman pagan priests like the haruspices or the augurs in order to divine the future by their shape, dimensions or other factors. This practice remains an important ritual in some remote, tribal societies. The term "visceral" is contrasted with the term "parietal", meaning "of or relating to the wall of a body part, organ or cavity" The two terms are often used in describing a membrane or piece of connective tissue, referring to the opposing sides.
Since the introduction of medicines for the management of obesity in the 1930s, many compounds have been tried. Most of them reduce body weight by small amounts, and several of them are no longer marketed for obesity because of their side effects. Out of 25 anti-obesity medications withdrawn from the market between 1964 and 2009, 23 acted by altering the functions of chemical neurotransmitters in the brain. The most common side effects of these drugs that led to withdrawals were mental disturbances, cardiac side effects, and drug abuse or drug dependence. Deaths were reportedly associated with seven products. Six medications for long-term use are: liraglutide, naltrexone/bupropion, orlistat, semaglutide, tirzepatide and phentermine/topiramate. There is no information on how these drugs affect longer-term complications of obesity such as cardiovascular disease or death, although studies on semaglutide have shown cardiovascular benefits. After stopping treatment with GLP-1 agonists such as semaglutide, liraglutide and tirzepatide, people regain on average more than half (50–70%) of the lost weight within 1 year. In 2019 a systematic review compared the effects on weight of various doses of fluoxetine (60 mg/d, 40 mg/d, 20 mg/d, 10 mg/d) in obese adults. When compared to placebo, all dosages of fluoxetine appeared to contribute to weight loss but lead to increased risk of experiencing side effects such as dizziness, drowsiness, fatigue, insomnia and nausea during period of treatment. However, these conclusions were from low certainty evidence.
Flunisolide Fluticasone furoate Fluticasone propionate Triamcinolone acetonide Beclomethasone dipropionate Budesonide Mometasone furoate Ciclesonide There also exist certain combination preparations such as Advair Diskus in the United States, containing fluticasone propionate and salmeterol (a long-acting bronchodilator), and Symbicort, containing budesonide and formoterol fumarate dihydrate (another long-acting bronchodilator). They are both approved for use in children over 12 years old.
Sources: en.wikipedia.org
Nutritive: the pulp keeps the organic components of the surrounding mineralized tissue supplied with moisture and nutrients; Protective/sensory: extremes in temperature, pressure, or trauma to the dentin or pulp are perceived as pain; Defensive/reparative: the formation of reparative or tertiary dentin (by the odontoblasts); Formative: cells of the pulp produce dentin which surrounds and protects the pulpal tissue.
=== (1) Venom collection methods === Venom milking is the most simplistic way of collecting a venom sample. It usually involves a vertebrate animal (Typically a snake) to deliver a venomous bite into a container. Similarly, electrical stimulation can be used for invertebrate animal (Insects and arachnids) subjects. This practice has allowed for the discovery of the basic properties of venom and to understand the biological factors involved in venom production such as venom regeneration periods. Other methods involve post-mortem dissection of the venom glands to collect the required materials (Venom or tissue).
It received some criticism from those who thought it sounded too similar to their first album. With no set band to perform the new material, Fripp and Sinfield brought Mel Collins and Gordon Haskell in as full-time members, with Haskell doubling as lead vocalist and bassist and Collins playing woodwinds and keyboards, while Andy McCulloch joined as the band's new drummer. Fripp and Sinfield wrote the band's third album, Lizard, with Haskell, Collins, and McCulloch having no say in the direction of the material. In addition to the core band, several session musicians contributed to the Lizard recording, including the returning Keith Tippett, who was offered to be a member of the new line-up, but due to other commitments could only work with the band as an occasional guest musician, and two members of Tippett's band, Mark Charig on cornet and Nick Evans on trombone. Oboe and cor anglais player Robin Miller also appeared, while Jon Anderson of Yes was brought in to sing a section of the album's title track, "Prince Rupert Awakes", which Fripp and Sinfield considered to be outside Haskell's natural range and style. Lizard featured stronger jazz and chamber-classical influences than previous albums. The album contains Sinfield's "phantasmagorical" lyrics, including "Happy Family" (an allegory of the break-up of the Beatles), and the title track, a suite which took up the entire second side, describing a medieval battle and its outcome. Released in December 1970, Lizard reached No. 29 in the UK and No. 113 in the US.
Tea bricks or compressed tea are produced for convenience in transport, storage, and ageing. It can usually be stored longer without spoilage than loose leaf tea. Compressed tea is prepared by loosening leaves from the cake using a small knife, and steeping the extracted pieces in water. During the Tang dynasty, as described by Lu Yu, compressed tea was ground into a powder, combined with hot water, and ladled into bowls, resulting in a "frothy" mixture. In the Song dynasty, the tea powder would instead be whisked with hot water in the bowl. Although no longer practiced in China today, the whisking method of preparing powdered tea was transmitted to Japan by Zen Buddhist monks, and is still used to prepare matcha in the Japanese tea ceremony. Chinese pu-erh is often distributed in the form, as other teas may sometimes be. Compressed tea was the most common form of tea in China during the Tang dynasty. By the beginning of the Ming dynasty, it had been displaced by loose-leaf tea. In Mongolia, tea bricks were ubiquitous enough to be used as a form of currency. Among Himalayan peoples, compressed tea is consumed by combining it with yak butter and salt to produce butter tea.
Sources: en.wikipedia.org
=== Reverse transcriptase can copy RNA into DNA === Retroviruses were shown to have a single-stranded RNA genome and to replicate via a DNA intermediate, the reverse of the usual DNA-to-RNA transcription pathway. They encode a RNA-dependent DNA polymerase (reverse transcriptase) that is essential for this process. Some retroviruses can cause diseases, including several that are associated with cancer, and HIV-1 which causes AIDS. Reverse transcriptase has been widely used as an experimental tool for the analysis of RNA molecules in the laboratory, in particular the conversion of RNA molecules into DNA prior to molecular cloning and/or polymerase chain reaction (PCR).
The weathering of limestone, now exposed at the land surface, produces the lime-rich soils that are so prevalent in the fertile farmland of the Valley and Ridge province. During this continental break-up, around 600 million to 560 million years ago, volcanic activity was present along the tectonic margins. There is evidence of this activity in today's Blue Ridge Mountains. Mount Rogers, Whitetop Mountain, and Pine Mountain are all the result of volcanic activity that occurred around this time. Evidence of subsurface activity, dikes and sills intruding into the overlying rock, is present in the Blue Ridge as well. For instance, mafic rocks have been found along the Fries Fault in the central Blue Ridge area of Montgomery County, Virginia. One of the best examples of mafic rocks from the breakup of Rodinia is the Catoctin Formation. Erupted during the final stages of rifting associated with Rodinia (570–550 Ma), these rocks where later metamorphosed into Greenstone.
== Tourism == The World Economic Forum's Travel & Tourism Competitiveness Index 2017 Report, ranked Thailand 34 of 136 nations (1=most competitive, 136=least competitive). Other ASEAN nations ranked were: Singapore, 6; Malaysia, 26; Indonesia, 42; Vietnam, 67; Philippines, 79; Laos, 94; Cambodia, 101. International Tourist Arrivals and Receipts: Thailand ranked number nine in 2016, with 32.5 million arrivals. It ranked third in international tourism receipts, US$49.9 billion. Global Destinations Cities Index 2016: In this seventh annual survey published by MasterCard, Bangkok ranked number one of 100 cities worldwide as the top global destination city as determined by number of visitors. It displaced London, the previous number one. Other ASEAN cities ranked in the survey were Singapore, 6; Ho Chi Minh City, 42; Hanoi, 52; Jakarta, 66; and Manila, 74. Travel and Tourism Competitiveness Report 2015: Thailand ranked 35 of 141 nations. Among ASEAN nations, Singapore was ranked 11; Malaysia, 25: Indonesia, 50; Philippines, 74; Vietnam, 75; Laos, 96; Cambodia, 105; and Myanmar, 134. International Tourist Arrivals: Thailand ranked number ten in 2013, up five places from 2012 with 26.5 million arrivals. International Tourist Receipts: Ranked number seven in the world in 2013, up two places from 2012, with receipts estimated at US$42.1 billion. Total tourism contribution to GDP: Thailand ranked 18 of 184 nations in 2014, with travel and tourism income totalling 2,345 billion baht or 19.3 percent of GDP.
Sources: en.wikipedia.org
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.
Typical endpoints include growth hormone pulse frequency and amplitude, together with insulin-like growth factor 1 concentration. Some protocols add body composition or metabolic markers. Interpretation depends on baseline hormonal status, which varies widely between individuals.
Most human data come from small, early-stage studies, and independent replication is limited. Short-term effects on growth hormone release are documented; longer-term outcomes are not well characterized. Open questions include changes in pituitary responsiveness after repeated exposure.
It acts on the growth hormone-releasing hormone receptor found on pituitary somatotroph cells. Activation of that receptor triggers growth hormone release through a cyclic AMP dependent pathway.