epitalon 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.
Last reviewed on 2026-03-12. Where a claim depends on a specific study, the study is described rather than over-claimed.
The peptide is a synthetic analogue of epithalamin, a preparation extracted from bovine pineal glands. Investigators sought a short, chemically defined molecule that would reproduce some of the endocrine and gerontological observations attributed to the glandular extract. Proposed mechanisms centre on induction of telomerase activity, an effect reported in cultured human somatic cells in the early 2000s, together with influences on melatonin secretion and neuroendocrine regulation. Those mechanisms remain incompletely characterised, and the reported telomerase response has not been consistently reproduced by independent groups working in comparable systems.
Published work on this compound consists mainly of in vitro experiments, animal studies, and small clinical investigations, a substantial share of which appeared in Russian-language journals. Sample sizes are generally small, control conditions differ between studies, and several endpoints rely on markers whose clinical meaning is itself debated. Reviews of the longevity field treat the peptide as an early example of telomerase-directed research rather than an established intervention. Regulatory treatment varies by country: some jurisdictions place it under prescription controls, others treat it as a laboratory material, and importation may be restricted regardless of local status.
Residue composition is the property that most cleanly separates verified material from mislabelled samples. Alanine, glutamate, aspartate and glycine appear in that order from the N-terminus, and the two acidic residues sit in the middle of the chain. Because the peptide is short, it can be produced by solid-phase synthesis and characterised by mass spectrometry without ambiguity. Any reported sample whose measured mass departs substantially from 390 daltons is a different compound or a degraded mixture rather than epitalon.
Epitalon is a synthetic tetrapeptide whose four residues are alanine, glutamate, aspartate and glycine, commonly abbreviated AEDG. Its molecular formula is C14H22N4O9 and its monoisotopic mass is near 390.35 daltons. The peptide carries two acidic side chains, so it is neutral to negatively charged in most aqueous buffers. Published reference summaries usually list it under both spellings, epitalon and epithalon, and treat the two names as the same material.
| Property | Value | Notes |
|---|---|---|
| Peptide sequence | Ala-Glu-Asp-Gly | Often abbreviated AEDG in research literature |
| Common synonyms | Epithalon, epitalon, AEDG | Spelling variants refer to the same tetrapeptide |
| Molecular formula | C14H22N4O9 | Theoretical monoisotopic mass near 390.35 Da |
| Appearance | White to off-white powder | Typically supplied as a lyophilised solid |
| Solubility class | Freely soluble in water | Hydrophilic peptide; dissolves in aqueous buffer |
The compound is described in the literature as a derivative of epithalamin, a preparation obtained from bovine pineal tissue. Work on this peptide family was carried out mainly by a research group in Saint Petersburg beginning in the 1980s, and the substance was later registered for clinical use in Russia under the name Epitalon. Outside that region it is generally treated as a research chemical rather than an approved medicine. Statements about its biological activity rest on a relatively small number of studies, and independent replication remains limited.
In its supplied form epitalon is a white to off-white powder, usually lyophilized and often hygroscopic. It dissolves readily in water and in aqueous buffers, and it is commonly handled as the acetate or trifluoroacetate salt to improve stability during purification and drying. The amide backbone is labile in aqueous media, so solutions are less durable than the dry solid. Handling notes in the chemical literature therefore emphasize keeping the powder dry, cool and shielded from light until it is dissolved.
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.
Liakhov, a vigorous, able, and reactionary officer firmly committed to upholding absolute monarchies whatever in Russia or Iran, transformed the Persian Cossack Brigade into a mounted para-military police force rather than as a combat force. Liakhov was close to the new Shah, Mohammed Ali, who ascended to the Peacock Throne in January 1907, and it was due to the shah's patronage that Liakhov transformed the Persian Cossack Brigade into the main bulwark of the Iranian state. In June 1908, Liakhov led the Cossack Brigade in bombarding the Majlis (Parliament) while being appointed military governor of Tehran as the shah attempted to do away with the constitution his father had been forced to grant in 1906 Reza Khan, who became the first Iranian to command the Cossack Brigade led the coup d'état in 1921 and in 1925 deposed the Qajars to found a new dynasty. After the outbreak of World War I in August 1914, Cossacks became a key component in the cavalry of the Imperial Russian Army. The mounted Cossacks made up 38 regiments, plus some infantry battalions and 52 horse artillery batteries. Initially, each Russian cavalry division included a regiment of Cossacks in addition to regular units of hussars, lancers, and dragoons. By 1916, the Cossacks' wartime strength had expanded to 160 regiments, plus 176 independent sotnias (squadrons) employed as detached units. The importance of cavalry in the frontlines faded after the opening phase of the war settled into a stalemate.
==== Estrogen ==== Estrogens act through ERα to stimulate prolactin gene transcription directly and to promote lactotroph proliferation. ERα-knockout mice show a 10–20-fold reduction in prolactin mRNA. During pregnancy, rising estrogen levels contribute to the physiological expansion of the lactotroph population.
=== Nutritional value === Milk powders contain all 21 standard amino acids, the building blocks of proteins, and are high in soluble vitamins and minerals. According to USAID, the typical average amounts of major nutrients in the unreconstituted nonfat dry milk are (by weight) 36% protein, 52% carbohydrates (predominantly lactose), calcium 1.3%, potassium 1.8%. Whole milk powder, on the other hand, contains on average 25–27% protein, 36–38% carbohydrates, 26–40% fat, and 5–7% ash (minerals). In Canada, powdered milk must contain added vitamin D in an amount such that a reasonable daily intake of the milk will provide between 300 and 400 International units (IU) of vitamin D. However, inappropriate storage conditions, such as high relative humidity and high ambient temperature, can significantly degrade the nutritive value of milk powder. Commercial milk powders are reported to contain oxysterols (oxidized cholesterol) in higher amounts than in fresh milk (up to 30 μg/g, versus trace amounts in fresh milk). Oxysterols are derivatives of cholesterol that are produced either by free radicals or by enzymes. Some free radicals-derived oxysterols have been suspected of being initiators of atherosclerotic plaques. For comparison, powdered eggs contain even more oxysterols, up to 200 μg/g.
[xanthine oxidase] + 2 glutathione Thus, the two substrates of this enzyme are xanthine dehydrogenase and glutathione disulfide, whereas its two products are xanthine oxidase and glutathione. This enzyme belongs to the family of oxidoreductases, specifically those acting on a sulfur group of donors with a disulfide as acceptor. The systematic name of this enzyme class is [xanthine-dehydrogenase]:glutathione-disulfide S-oxidoreductase. Other names in common use include [xanthine-dehydrogenase]:oxidized-glutathione S-oxidoreductase, enzyme-thiol transhydrogenase (oxidized-glutathione), glutathione-dependent thiol:disulfide oxidoreductase, and thiol:disulfide oxidoreductase. This enzyme participates in glutathione metabolism.
==== MeSH E05.478.588 – immunohistochemistry ==== MeSH E05.478.588.375 – fluorescent antibody technique MeSH E05.478.588.375.050 – antibody-coated bacteria test, urinary MeSH E05.478.588.375.300 – fluorescent antibody technique, direct MeSH E05.478.588.375.310 – fluorescent antibody technique, indirect MeSH E05.478.588.375.341 – fluoroimmunoassay MeSH E05.478.588.375.341.350 – fluorescence polarization immunoassay MeSH E05.478.588.400 – immunoenzyme techniques MeSH E05.478.588.400.170 – enzyme-linked immunosorbent assay MeSH E05.478.588.400.180 – enzyme multiplied immunoassay technique
Sources: en.wikipedia.org
== Role in cancer metastasis == Cancer metastasis is the process by which a tumor spreads from its place of origin in the body to distant tissues. Cancer cells and tumors have been known to produce and respond to electrical currents within the body. Cancer cells isolated from brain, prostate, and lung tumors have all been observed to have electrotaxis responses, and there is evidence suggesting that electrotaxis may play a role in cancer cell metastasis.
=== Shelby's Legendary Shawarma === Shelby's Legendary Shawarma is a shawarma fast food chain that has 42 locations, primarily in Ontario owned by Shelby's Franchise Holdings, Inc. headquartered in Oakville, Ontario. It was founded in 2015 when two Arab men from London, Ontario, Yazan El-Shalabi and Yasser Ali (also known by his public persona of "Shawarma Man") opened a food truck replacing a food trailer in nearby Lambeth originally catering to University of Western Ontario students. After opening its permanent brick-and-mortar location in 2018, Shelby's now operates over 40 locations across Ontario located in the Greater Toronto Area, Ottawa, and southwestern Ontario with plans to expand outside of Ontario, particularly in Western Canada, and internationally, in the United States and United Kingdom in the future. This restaurant serves shawarma wraps, rice bowls, poutines, maneesh and churros. It has a social media presence on YouTube, TikTok, Instagram, X (Twitter) and Facebook.
Belize's rugged geography has also made the country's coastline and jungle attractive to drug smugglers, who use the country as a gateway into Mexico. In 2011, the United States added Belize to the list of nations considered major drug producers or transit countries for narcotics.
=== Magnesium deficiency === Injected magnesium sulfate is used as a replacement therapy for magnesium deficiency. Orally administered magnesium sulfate is laxative and thus the magnesium is not well absorbed
Sources: en.wikipedia.org
Epitalon is a synthetic four-amino-acid peptide with the sequence alanine–glutamate–aspartate–glycine, also written AEDG. It was developed in Russian gerontology research and is studied for proposed effects on telomerase, melatonin regulation, and neuroendocrine function. It is not an approved pharmaceutical in the United States or the European Union.
No. Epithalamin is a peptide-rich extract prepared from bovine pineal glands, while epitalon is a short synthetic peptide designed as a defined analogue of it. The synthetic version was intended to provide a reproducible molecule with some of the same proposed biological activity.
Telomere elongation and telomerase activation have been reported in cultured human somatic cells, but evidence from living human subjects is limited and has not been independently confirmed at scale. Reported findings come largely from small studies with differing designs, so the question remains open rather than settled.
It is a four-amino-acid peptide built from alanine, glutamate, aspartate and glycine in that order. Its formula is C14H22N4O9, and it is made by chemical synthesis rather than extracted from tissue. The synthetic peptide is a single defined molecule, unlike the pineal extracts it is often compared with.