The short version of epithalamin fits in a sentence. The long version — which is the one that helps — is below.
Reviewed 2026-01-21. Anything still debated is marked as such rather than presented as settled.
Material supplied for laboratory use is normally a lyophilised white to off-white powder that dissolves readily in water and in isotonic saline. Lyophilised cakes are hygroscopic and should be equilibrated to room temperature before opening to limit condensation on the solid. Solutions are typically prepared at milligram-per-millilitre concentrations and divided into single-use aliquots, because repeated freeze–thaw cycles degrade short peptides. Aqueous solutions are far less stable than the dry powder, and identity is usually verified by mass spectrometry alongside purity estimation from reversed-phase high-performance liquid chromatography.
Epitalon is a synthetic linear tetrapeptide with the sequence alanine–glutamate–aspartate–glycine, abbreviated AEDG. Its molecular formula is C14H22N4O9 and the calculated mass is approximately 390.35 g/mol. The compound is made by solid-phase peptide synthesis rather than extracted from tissue, although early work described it as a short fragment of a peptide fraction obtained from bovine pineal extract. In the research literature the spelling epitalon and the variant epithalone both appear, while AEDG is the standard code used in peptide nomenclature.
Published studies on epitalon are dominated by a small number of research groups, and independent replication in other laboratories remains limited. Proposed mechanisms include activation of telomerase and modulation of melatonin rhythms, but the evidence for either rests mainly on cell cultures and animal models. Whether the peptide produces comparable effects in humans is an open question, and the absence of large controlled trials means the literature is best read as exploratory rather than settled.
Epitalon is a synthetic four-amino-acid peptide with the sequence alanine-glutamate-aspartate-glycine, commonly abbreviated AEDG. Its molecular formula is C14H22N4O9, and its calculated molar mass is approximately 390.35 grams per mole. The compound is a short fragment related to a peptide fraction isolated from bovine pineal gland extracts, and it is normally supplied as a lyophilised powder intended for laboratory research. It is not a registered pharmaceutical product in most countries.
The peptide emerged from research carried out in Saint Petersburg from the late 1980s onward, where investigators searched for shorter active fragments of a pineal preparation known as epithalamin. The name epitalon was chosen to reflect that parent extract. Early reports described effects on neuroendocrine markers and on the lifespan of laboratory animals. Much of that work appeared in Russian-language journals, with English translations following later, which affects how readily the original protocols can be assessed by outside groups.
| Property | Value | Notes |
|---|---|---|
| Amino acid sequence | Ala-Glu-Asp-Gly | Linear tetrapeptide, also written AEDG |
| Molecular mass | About 390.35 g/mol | Value calculated from the sequence |
| Appearance | White to off-white powder | Lyophilised material forms a loose cake |
| Solubility | Freely soluble in water | Also dissolves in isotonic saline |
| Storage | -20 °C, desiccated | Aliquot solutions to avoid freeze–thaw cycling |
The parent extract epithalamin was characterised as a low-molecular-weight fraction of pineal tissue rather than a single defined chemical entity. Researchers fractionated it and tested successive fragments for activity, a screening approach typical of peptide discovery work in that era. Epitalon emerged from that process as one of the shorter sequences of interest. Because the original extract was never fully resolved into individual components, claims about which constituent drives a given effect rest on inference. This distinction matters when reading older reports that attribute extract observations to the tetrapeptide itself.
Epitalon is a synthetic tetrapeptide with the residue sequence alanine-glutamate-aspartate-glycine, commonly abbreviated AEDG. Its monoisotopic mass is approximately 390.35 daltons, and it is usually supplied as a lyophilised trifluoroacetate or acetate salt. The compound was derived from a pineal gland extract called epithalamin, a heterogeneous preparation investigated in the former Soviet Union. Researchers associated with the Saint Petersburg Institute of Bioregulation and Gerontology described the tetrapeptide as a constituent fragment of that extract. Commercial material is offered as a laboratory reagent rather than as a finished pharmaceutical product.
Literature searches for this compound must account for several spelling variants. Indexing databases contain epitalon, epithalon, epithalone, and AEDG, and relevant records are scattered across Russian-language and English-language journals that do not consistently cross-cite. Early publications describe the parent extract as a mixture of many peptides, whereas later work addresses the single synthetic tetrapeptide. That shift in nomenclature complicates comparison between studies, because extract data and tetrapeptide data are sometimes cited interchangeably. A search strategy omitting the alternate spellings will return an incomplete set of references.
== Peptide hormones == Kaufmann and Brown 2008 find the An. gambiae adipokinetic hormone (AKH) mobilizes carbohydrates but not lipids. Meanwhile AKH/Corazonin Peptide (ACP) does not mobilize (or inhibit mobilization) of either. Mugumbate et al., 2013 provides in solution and membrane bound structures from a nuclear magnetic resonance investigation.
In as much as the Meiji Restoration had sought to return the Emperor to a preeminent position, efforts were made to establish a Shinto-oriented state much like it was 1,000 years earlier. Since Shinto and Buddhism had molded into a syncretic belief in the prior thousand years and Buddhism had been closely connected with the shogunate, this involved the separation of Shinto and Buddhism (shinbutsu bunri) and the associated destruction of various Buddhist temples and related violence (haibutsu kishaku). Furthermore, a new State Shinto had to be constructed for the purpose. In 1871, the Office of Shinto Worship (ja:神祇省) was established, ranking even above the Council of State in importance. The kokutai ideas of the Mito school were embraced, and the divine ancestry of the Imperial House was emphasized. The government supported Shinto teachers, a small but important move. Although the Office of Shinto Worship was demoted in 1872, by 1877 the Home Ministry controlled all Shinto shrines and certain Shinto sects were given state recognition. Shinto was released from Buddhist administration and its properties restored. Although Buddhism suffered from state sponsorship of Shinto, it had its own resurgence. Christianity also was legalized, and Confucianism remained an important ethical doctrine. Increasingly, however, Japanese thinkers identified with Western ideology and methods.
Females become receptive to courting males about 8–12 hours after emergence. Specific neuron groups in females have been found to affect copulation behavior and mate choice. One such group in the abdominal nerve cord allows the female fly to pause her body movements to copulate. Activation of these neurons induces the female to cease movement and orient herself towards the male to allow for mounting. If the group is inactivated, the female remains in motion and does not copulate. Various chemical signals such as male pheromones often are able to activate the group. Also, females exhibit mate choice copying. When virgin females are shown other females copulating with a certain type of male, they tend to copulate more with this type of male afterwards than naïve females (which have not observed the copulation of others). This behavior is sensitive to environmental conditions, and females copulate less in bad weather conditions.
Both the pharmaceutical supply chain and the illicit supply chain obtain cocaine from coca cultivated in Latin America, but they operate under very different controls and oversight. In Peru, for example, legal coca cultivation is monopolized by the state company National Coca Company (ENACO), yet approximately 90% of coca leaves produced in the country are diverted to illegal actors for cocaine manufacturing. As a result, these illicit coca crops are a primary target of ongoing government-led coca eradication efforts. Cocaine is prohibited in competition for athletes by the World Anti-Doping Agency (WADA), which lists it as a stimulant on its International Standard for the Prohibited List.
=== Cancer === Lung cancer-specific VOCs are 1-propanol, endogenous primary alcohol, and pentane. Pentane's presence in exhaled breath of patients has been hypothesized to originate from the increased peroxidation of fatty acids seen in severe lung disease. Foul-smelling p-cresol was solely found in colorectal and gastric cancer, expected to be caused by cancer's alteration of the microbiome. No singular compound could be exclusively considered a biomarker, but VOCs patterns observed may aid in distinguishing between certain diseases.
Sources: en.wikipedia.org
== Pharmacology == Chlorpromazine is classified as a low-potency typical antipsychotic. Low-potency antipsychotics have more anticholinergic side effects, such as dry mouth, sedation, and constipation, and lower rates of extrapyramidal side effects, while high-potency antipsychotics (such as haloperidol) have the reverse profile.
1 October – A new simulation by NASA finds that the Moon likely formed within a matter of hours, as opposed to earlier theories that proposed a much longer period of months or years. 4 October – Edmonton Police Service reports the use of DNA phenotyping to generate 3D facial images of crime suspects.
The spot capacity (analogous to peak capacity in HPLC) can be increased by developing the plate with two different solvents, using two-dimensional chromatography. The procedure begins with development of a sample loaded plate with first solvent. After removing it, the plate is rotated 90° and developed with a second solvent.
The Armenian-American radiologist Mihran Krikor Kassabian (1870-1910), vice president of the American Roentgen Ray Society (ARRS), was concerned about the irritating effects of X-rays. In a publication, he mentioned his increasing problems with his hands. Although Kassabian recognized X-rays as the cause, he avoided making this reference so as not to hinder the progress of radiology. In 1902, he suffered a severe radiation burn on his hand. Six years later, the hand became necrotic and two fingers of his left hand were amputated. Kassabian kept a diary and photographed his hands as the tissue damage progressed. He died of cancer in 1910.
Sources: en.wikipedia.org
== Investment == The basic elements of an investment are cash inflows, outflows, timing of cash flows, and risk. The ability to analyze these elements is key in providing services to investors in commercial real estate.
=== Camille Braverman === Camille Braverman (Bonnie Bedelia) is the matriarch of the family and Zeek's wife. She is an artist and also shows herself to be very capable domestically, striving to keep her family happy and peaceful. In season one, when Zeek reveals that he made a bad investment that he kept from Camille, she reveals that he was having an affair. Zeek later reveals that they both cheated. Camille confirms to her daughter, Sarah, that she has been having an affair with her art teacher, Matthew, but that she has ended it. In season one, it is stated that she has been married to Zeek for 46 years. She is 63 when the series begins, meaning she was about 17 when she married Zeek. She was 23 when she had Adam, 25 when she had Sarah, 28 when she had Crosby, and 31 when she had Julia. After Zeek's death, she is shown as having traveled to France, to the place where Zeek had planned to take her as a surprise in an earlier episode. As she is shown in other scenes in the finale's final montage, she returns from her trip at some unknown point.
With the increase in commercial alligator farming in countries including Thailand, the United States, Australia, South Africa, and South East Asia, crocodile fat and oil became a commercial product that can be used in a number of ways such as medicine, skin care products, and as a feedstock for biodiesel. Natural oils are extensively used in cosmetics and as treatment for a growing number of conditions. According to Vermaak, the natural products industry is a multibillion-dollar industry and has grew enormously in the years up to 2011. Crocodile oil as an oil mainly containing fatty acids contribute to beneficial properties in cosmetics and personal care products. More specifically, crocodile oil is also used in the tanning industry. The oil can range from about $US4 for a tube of crocodile lip balm to about $US104 for a large jar of pure crocodile oil balm. Businesses consider the capability to convert crocodile fat to a marketable oil. They can capitalise on "first-mover advantage" due to crocodile oil benefits. Golden 8 Skincare is an Australian company, using crocodile oil as the main ingredient of its product. The company's description of the product include "Packed full of Omegas 3,6 7 and 9 to help in the healing of skin conditions due to its Natural Moisturising Factor (NMF) Crocodile Oil helps prevents dermal irritation and regenerates the skin whilst providing the skin its daily dose of Omegas to produce clear, glowing, healthy skin." Crocodile oil lotions and other products derived from crocodile fat can be seen sold online for personal use.
Sources: en.wikipedia.org
It is a synthetic tetrapeptide. Its sequence was derived from research on peptide fractions of bovine pineal extract, and the intact AEDG sequence has not been demonstrated as an abundant free peptide in human tissue.
AEDG is the one-letter code for the four amino acids alanine, glutamate, aspartate and glycine in that order. The same molecule is written in three-letter form as Ala-Glu-Asp-Gly.
Identity is normally confirmed by mass spectrometry against the calculated mass of roughly 390.35 g/mol. Purity is then estimated by reversed-phase high-performance liquid chromatography with ultraviolet detection.
It is a synthetic tetrapeptide built from alanine, glutamate, aspartate and glycine. The four residues are joined by standard peptide bonds, giving a linear chain rather than a branched structure.