Pineal peptide is one of those subjects where the details matter more than the headlines. This page pulls together the background, the mechanisms, and the practical points readers ask about most.
Last reviewed on 2025-08-24. Where a claim depends on a specific study, the study is described rather than over-claimed.
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.
Epitalon is a synthetic tetrapeptide whose sequence is alanine–glutamate–aspartate–glycine, commonly abbreviated AEDG. It was developed in Russia during the 1980s and 1990s by investigators associated with the St. Petersburg Institute of Bioregulation and Gerontology, who studied short peptides as regulators of gene expression and tissue function. The alternative spelling epithalon appears interchangeably in the literature, and the two names refer to the same molecule. Outside Russia it is encountered chiefly as a research chemical rather than a licensed medicine, and it holds no approval from the United States Food and Drug Administration or the European Medicines Agency.
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.
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.
Epitalon is a synthetic tetrapeptide whose sequence is alanine-glutamate-aspartate-glycine, written in single-letter code as AEDG. The four residues are joined by three peptide bonds, giving a linear backbone with no branching and no disulfide bridges. Its calculated molecular mass for the free form is approximately 390.3 daltons, a figure that rises when the compound is supplied as an acetate or trifluoroacetate salt. Because the chain is short, the molecule is defined entirely by its residue order rather than by any folded three-dimensional structure.
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.
| 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 |
=== Products === PFAS are used to produce fluoropolymers by emulsion polymerization. Because they resist heat, oil, stains, grease, and water, they are ingredients in stain repellents, polishes, paints, and coatings. They came into use with the invention of Teflon in 1938. They have been used in products including waterproof fabric such as nylon, yoga pants, carpets, shampoo, feminine hygiene products, mobile phone screens, wall paint, furniture, adhesives, food packaging, firefighting foam, the insulation of electrical wires, dental floss and sunscreen. PFAS have been used by the cosmetic industry in cosmetics and personal care products, including lipstick, eye liner, mascara, foundation, concealer, lip balm, blush, and nail polish. Pesticides including fluazinam and flufenacet break down to produce trifluoroacetic acid. In 2025, a report by the US FDA stated that in 2021, up to 1.4% of cosmetics sold in Europe contained PFAS and as of 2025, less than 1% of cosmetics sold in the US contained PFAS.
Because PAI-2 is not properly secreted it accumulates in the cell where it remains unglycosylated. The exposed RCL loop on the PAI-2 contains the sequence Arg380-Thr381 which is identical to the cleavage site uPA/tPA identity. When uPA/tPA bind and cleave the bond between Arg-380 and Thr381 the RCL loop inserts itself into a β-sheet A slot in the enzyme(s) and conformationally alters the active site of the enzyme allowing it to no longer function.
is the observed value. An error of a measurement is an inverse measure of accurate measurement (i.e., smaller the error greater the accuracy of the measurement). Errors can be expressed relatively. Given the relative error (
== Research == EMP has been studied in the treatment of other cancers such as glioma and breast cancer. It has been found to slightly improve quality of life in people with glioma during the first 3 months of therapy.
== Similar approaches == Though immunoliposomes serve as a possible advancement, there are other therapies similar to it that trail on the role of targeted drug delivery systems. One example of such therapy is Immune Polymeric nanoparticles, which are similar to liposomes but consist of small particles composed of biodegradable polymers. These nanoparticles similarly encapsulate drugs and can function to enhance specificity towards targeted diseased cells with peptide ligands. Another type is Targeting Antibody Drug Conjugates, which combine monoclonal antibodies with the cytotoxicity of chemotherapy drugs. This specific type is catered towards cancer cells expressing a specific target antigen. They are well-tolerated by the body as they are biodegradable, eliminating many potential toxicity factors, and proving to be a possible new model for therapeutics.
Sources: en.wikipedia.org
Sigma RBI produces specialized products for use in the field of cell signaling and neuroscience. Their offerings range from standard biochemical reagents to specialized research tools, including ligands for receptors and ion channels, enzyme inhibitors, phosphospecific antibodies, key signal transduction enzymes, and assay kits for cell signaling.
=== Availability === Mianserin is not approved for use in the United States, but is available in the United Kingdom and other European countries. A mianserin generic drug received TGATooltip Therapeutic Goods Administration approval in May 1996 and is available in Australia.
Duterte campaigned for decentralization and a shift to a federal government during the 2016 presidential election. In an October 2014 forum organized by Federal Movement for a Better Philippines in Cebu City prior to joining the presidential race, the then-mayor of Davao City called for the creation of two federal states for Moro people as a solution to the problems besetting Mindanao. Mayor Duterte said that Nur Misuari and his Moro National Liberation Front do not see eye-to-eye with the Moro Islamic Liberation Front which the administration of President Benigno Aquino III had inked a peace deal with. He also said that the "template of the Bangsamoro Basic Law is federal", but what is granted to the Bangsamoro should also be granted to other Moro groups and other regions in the country. In a dialogue with the Makati Business Club prior to the elections, Duterte said he is open to "toning down the Constitution" to accommodate more foreign investors to the Philippines. He also said he is open to up to 70 percent foreign ownership of businesses in the country and foreign lease of lands up to 60 years, but will "leave it to Congress to decide".
== Other projects == Hari is listed as a producer and writer on the 2021 film The United States vs. Billie Holiday. As of April 2018, Hari was working on a biography of American linguist and intellectual Noam Chomsky.
Sources: en.wikipedia.org
== Sources == Tityus serrulatus, also known as the Brazilian yellow scorpion, is from the genus Tityus belonging to the family Buthidae. TsPep2 is identified from the venom of Tityus serrulatus by using a cDNA primer sequence based on the C-terminal amino acid sequence of KTx2 from Androctonus australis.
== Anterior vaginal support == Not all agree to the amount of supportive tissue or fascia exists in the anterior vaginal wall. The major point of contention is whether the vaginal fascial layer exists. Some texts do not describe a fascial layer. Other sources state that the fascia is present under the urethra which is embedded in the anterior vaginal wall. Despite disagreement, the urethra is embedded in the anterior vaginal wall.
In an early media report on MDMA published in 1982, a Drug Enforcement Administration (DEA) spokesman stated the agency would ban the drug if enough evidence for abuse could be found. By mid-1984, MDMA use was becoming more noticed. Bill Mandel reported on "Adam" in a 10 June San Francisco Chronicle article, but misidentified the drug as methyloxymethylenedioxyamphetamine (MMDA). In the next month, the World Health Organization identified MDMA as the only substance out of twenty phenethylamines to be seized a significant number of times. After a year of planning and data collection, MDMA was proposed for scheduling by the DEA on 27 July 1984, with a request for comments and objections. The DEA was surprised when a number of psychiatrists, psychotherapists, and researchers objected to the proposed scheduling and requested a hearing. In a Newsweek article published the next year, a DEA pharmacologist stated that the agency had been unaware of its use among psychiatrists. An initial hearing was held on 1 February 1985 at the DEA offices in Washington, D.C., with administrative law judge Francis L. Young presiding. It was decided there to hold three more hearings that year: Los Angeles on 10 June, Kansas City, Missouri on 10–11 July, and Washington, D.C., on 8–11 October. Sensational media attention was given to the proposed criminalization and the reaction of MDMA proponents, effectively advertising the drug.
Several ribosomopathies share features such as inherited bone marrow failure, which is characterized a reduced number of blood cells and by a predisposition to cancer. Other features can include skeletal abnormalities and growth retardation. However, clinically these diseases are distinct, and do not show a consistent set of features.
== Contraindications == The drug is contraindicated in subjects with known hypersensitivity to the active ingredient or to any of the inactive ingredients contained in the pharmaceutical formulation. It is also contraindicated in women who are pregnant and breastfeeding.
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.
The peptide contains four residues in the order alanine, glutamate, aspartate and glycine, abbreviated AEDG. The chain is linear and held together by three peptide bonds. Its calculated mass for the uncharged free form is about 390.3 daltons.