thymalfasin 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.
Updated 2026-04-13. Numbers and descriptions here follow the published literature rather than marketing material.
The compound has been investigated as an adjunct in chronic viral hepatitis and as a vaccine adjuvant, with results that vary by study design and population. Regulators in some countries have approved a synthetic form for specific indications, while other agencies have not. Whether the peptide produces consistent clinical benefit across diverse patient groups is still an open question, and many trials have been small. Its status is therefore best described as investigational in many contexts and established only narrowly.
The name itself causes confusion, because several unrelated thymic peptides share the thymosin label. Thymosin beta-4, for example, is a different molecule with different functions. Naming conventions in the literature also mix descriptive research terms with assigned nonproprietary names, so a reader should confirm which entity a given paper addresses. Clarifying that point is usually the first step in interpreting any claim about this peptide.
Immunological studies connect the peptide to multiple parts of the immune response. It has been reported to engage Toll-like receptor signaling, to promote dendritic cell maturation, and to influence the balance of T helper cell subsets. Changes in natural killer cell activity and in cytokine release appear in cell culture and animal models. These observations describe broad immunomodulatory behavior rather than a single defined receptor target, and the primary molecular interaction has not been settled.
Thymosin alpha-1 is a synthetic 28-amino-acid peptide whose sequence was first identified in extracts of bovine thymus tissue during the 1970s. The chain carries an acetyl group on its N-terminal serine. Its acidic residue content is high, which produces strong water solubility and an isoelectric point well below neutrality. Material supplied for laboratory and clinical use is manufactured by solid-phase peptide synthesis rather than purified from animal tissue. Different salt forms, such as the acetate, alter the counter-ion content without changing the peptide backbone.
Whether the free 28-residue peptide circulates in human tissue remains debated. The best-documented human source is prothymosin alpha, a larger acidic protein that carries the sequence at its N-terminus. Reports of measurable peptide levels in serum and lymphoid tissue exist, yet some of that signal may come from cross-reacting fragments or from the parent protein. Most reviews therefore treat prothymosin alpha as the established human molecule and describe independent circulation of the small peptide as an unresolved question.
| Property | Value | Notes |
|---|---|---|
| Residue count | 28 amino acids | Acetyl group on the first residue |
| Approximate molecular mass | 3108 daltons | Calculated from the consensus sequence |
| Origin | Cleavage product of prothymosin alpha | Not encoded as a separate gene product |
| Primary research focus | Immune modulation | Studied in viral hepatitis and as a vaccine adjuvant |
| Common synonyms | Thymalfasin, Tα1, thymosin alpha 1 | Thymalfasin is the assigned nonproprietary name |
In 2011 the committee concluded that the presence of numerous uncertainties and knowledge gaps regarding the effects of heroin treatment meant that it could not recommend the introduction of heroin maintenance treatment in Norway. Critics of heroin maintenance programmes object to the high costs of providing heroin to people who use it. The British heroin study cost the British government £15,000 per participant per year, roughly equivalent to average person who uses heroin's expense of £15,600 per year. Drug Free Australia contrast these ongoing maintenance costs with Sweden's investment in, and commitment to, a drug-free society where a policy of compulsory rehabilitation of people who are experiencing drug addiction is integral, which has yielded to one of the lowest reported illicit drug use levels in the developed world, a model in which successfully rehabilitated people who use substances present no further maintenance costs to their community, as well as reduced ongoing health care costs. King's Health Partners notes that the cost of providing free heroin for a year is about one-third of the cost of placing the person in prison for a year.
== Potential uses == Mecasermin rinfabate was developed by INSMED corporation for the treatment of growth failure in children with severe primary IGF-I deficiency (primary IGFD) or with growth hormone (GH) gene deletion who have developed neutralizing antibodies to GH. Due to a patent settlement, Iplex is being taken off the market for short stature related indications. However, Iplex is being studied as a treatment for other several serious medical conditions. On March 11, 2009 the FDA announced that mecasermin rinfabate would be made available to Americans with amyotrophic lateral sclerosis (ALS), more commonly known as Lou Gehrig's disease, as a part of a clinical trial. The drug is currently available in Italy for this condition.
=== Role in Major Depression Disorder === The cGMP signaling pathway plays a role in the regulation of neuroplasticity, an area of interest in understanding the pathophysiology of major depressive disorder (MDD). The cGMP signaling pathway in the brain operates as a second messenger system, amplifying neurotransmitter signals, influencing gene expression and neuronal function. Within neurons, cGMP levels are modulated by guanylate cyclase enzymes, which synthesize cGMP, and by PDEs, which degrade cGMP. Enhancing cGMP levels, either by stimulating guanylate cyclase or inhibiting PDEs, promotes neurogenesis and synaptic plasticity, particularly in brain regions implicated in MDD, such as the hippocampus and prefrontal cortex. Animal studies also demonstrate that chronic antidepressant treatment can elevate cGMP levels in these areas. Genetic research has further highlighted specific polymorphisms in PDE genes associated with MDD susceptibility and treatment response.
== Phytochemicals == Polyphenol research on maqui berries showed anthocyanin content to include eight glucoside pigments of delphinidin and cyanidin, with the principal anthocyanin being delphinidin 3-sambubioside-5-glucoside (34% of total anthocyanins). The average total anthocyanin content was 138 milligrams (2.13 gr) per 100 grams (3.5 oz) of fresh fruit, or 212 milligrams (3.27 gr) per 100 grams (3.5 oz) of dry fruit, ranking maqui berries low among darkly pigmented fruits for anthocyanin content (see table at anthocyanins). One study found that anthocyanins are also present in maqui leaves. Other phytochemicals extracted from the leaves were the alkaloids aristoteline, aristoquinoline, and aristone.
== Further reading == Morrison, G. C.; Nazaroff, W. W. (2002). "Ozone interactions with carpet: secondary emissions of aldehydes". Environmental Science & Technology. 36 (10): 2185–92. Bibcode:2002EnST...36.2185M. doi:10.1021/es0113089. PMID 12038828.
Sources: en.wikipedia.org
Carbonyl sulfide is the chemical compound with the linear formula O=C=S. It is a colorless flammable gas with an unpleasant odor. It is a linear molecule consisting of a carbonyl double bonded to a sulfur atom. Carbonyl sulfide can be considered to be intermediate between carbon dioxide and carbon disulfide, both of which are valence isoelectronic with it.
Two years later the Madras and Bombay armies lost their posts of Commander-in-Chief. In 1895, the Presidency Armies were abolished and the Indian Army created thereby was grouped into four commands: Bengal, Madras (including Burma), Bombay (including Sind, Quetta, and Aden), and the Punjab (including the North-West Frontier and the Punjab Frontier Force). Each was under the command of a lieutenant general, who answered directly to the C-in-C, India. The Presidency armies were abolished with effect from 1 April 1895 by a notification of the Government of India through Army Department Order Number 981 dated 26 October 1894, unifying the three Presidency armies into a single Indian Army. The armies were amalgamated into four commands, Northern, Southern, Eastern, and Western. The Indian Army, like the Presidency armies, continued to provide armed support to the civil authorities, both in combating banditry and in case of riots and rebellion. One of the first external operations the new unified army faced was the 1899 to 1901 Boxer Rebellion in China. The 1st, 4th, and 14th Sikhs; 3rd Madras Native Infantry, 4th Goorkas, 22nd and 30th Bombay Native Infantry, 24th Punjab Infantry, 1st Madras Pioneers, No. 2 Company Bombay Sappers, No. 3 Company Madras Sappers, No. 4 Company Bengal Sappers, and the 1st Bengal Lancers, among other Indian units, all served during the Rebellion. Numerous Indian soldiers earned the China War Medal 1900 with the "Relief of Pekin" clasp for contributing to the relief of Peking and the International Legations from 10 June to 14 August 1900.
==== Effect of size, shape, composition and environment ==== As a general rule, the wavelength of light absorbed increases as a function of increasing nanoparticle size. Both the surface plasmon resonance frequency and scattering intensity depend on the size, shape composition and environment of the nanoparticles. This phenomenon may be quantified by use of the Mie scattering theory for spherical nanoparticles. Nanoparticles with diameters of 30–100 nm may be detected easily by a microscope, and particles with a size of 40 nm may even be detected by the naked eye when the concentration of the particles is 10−4 M or greater. The scattering from a 60 nm nanoparticle is about 105 times stronger than the emission from a fluorescein molecule.
==== Declined ==== Jasmine Crockett, incumbent U.S. representative (ran for U.S. Senate) Domingo García, former president of the League of United Latin American Citizens (2018–2024) and candidate for this district in 2012 Marc Veasey, incumbent U.S. representative from the 25th district (ran for Tarrant County judge)
== Composition == The basic composition of a sausage roll is sheets of puff pastry formed into tubes around sausage meat and glazed with egg or milk before being baked. They can be served either hot or cold. In the 19th century, they were made using shortcrust pastry instead of puff pastry. A vegetarian or vegan approximation of a sausage roll can be made in the same manner, using a meat substitute.
Sources: en.wikipedia.org
== The conserved gene and its alleles == Thy-1 has been conserved throughout vertebrate evolution and even in some invertebrates, with homologs described in many species like squid, frogs, chickens, mice, rats, dogs, and humans. The Thy-1 gene is located at human chromosome 11q22.3 (mouse chromosome 9qA5.1). In AceView, it covers 6.82 kb, from 119294854 to 119288036 (NCBI 37, August 2010), on the reverse strand. This locus is very close to CD3 & CD56/NCAM genes. Some believe that there may be a functional significance of both this gene and CD3 delta subunit (T3D) mapping to chromosome 11q in man and chromosome 9 in mouse, though there is no homology (in fact this speculation led to its localization in chromosome 11q - the human chromosome region syntenic to mouse chromosome 9 which harbored T3D). In mice, there are two alleles: Thy-1.1 (Thy-1a, CD90.1) and Thy-1.2 (Thy-1b, CD90.2). They differ by only one amino acid at position 108; an arginine in Thy-1.1 and a glutamine in Thy-1.2. Thy-1.2 is expressed by most strains of mice, whereas Thy-1.1 is expressed by others such as AKR/J and PL mouse strains.
The neptunium antimonide compound NpSb was produced in 1971 by placing equal quantities of both elements in a vacuum tube, heating them to the melting point of antimony, and then heating it further to 1000 °C for sixteen days. This procedure also produced trace amounts of an additional antimonide compound Np3Sb4. One neptunium-bismuth compound, NpBi, has also been reported. The neptunium carbides NpC, Np2C3, and NpC2 (tentative) have been reported, but have not characterized in detail despite the high importance and utility of actinide carbides as advanced nuclear reactor fuel. NpC is a non-stoichiometric compound, and could be better labelled as NpCx (0.82 ≤ x ≤ 0.96). It may be obtained from the reaction of neptunium hydride with graphite at 1400 °C or by heating the constituent elements together in an electric arc furnace using a tungsten electrode. It reacts with excess carbon to form pure Np2C3. NpC2 is formed from heating NpO2 in a graphite crucible at 2660–2800 °C.
== Society and culture == As of 2018, there is a lack of compelling evidence to conclude superiority of insulin aspart over human insulin in type 2 diabetes. It is thus unclear why the shifting of people from human insulin to insulin aspart has occurred. In type 1 diabetes it appears to result in slightly better blood sugar control.
On 10 September 2008, Matthew Bryza said before the Commission on Security and Cooperation in Europe, "But there's much more to the story than that. The conflict certainly did not begin on August 7th. [...] Already we saw that the Russian peacekeepers were playing a role in providing a shield, we believe, to the South Ossetians who were shooting at the Georgian positions." After the war, Irakli Okruashvili, who served as Minister of Defence of Georgia, claimed that he and President Saakashvili had prepared plans to retake South Ossetia and Abkhazia in 2005. The alleged original plans intended a two-pronged offensive into South Ossetia. Saakashvili believed that a Russian response would be checked by the United States through diplomacy, so he did not order the taking of the Roki Tunnel. Georgian forces raced to contain the Russian forces, but were "outmaneuvered by the Russians." Okruashvili said that Russian response would be "inevitable" as after 2006, Russians "repositioned and improved their military infrastructure in the North Caucasus, Abkhazia, and South Ossetia." The Georgian Army could have defended a few major towns from the Russians, but President Saakashvili "let the Russians in to avoid criticism and appear more of a victim". In September 2008, Matthew Bryza said there was no disagreement between the intercepted phone conversations (which were presented as evidence of Russian invasion on 7 August) and August 7 statements of Georgian officials made during the phone calls between Bryza and Georgians.
Sources: en.wikipedia.org
It is usually classified as an immunomodulatory peptide rather than a classical hormone. It derives from the larger protein prothymosin alpha and acts mainly on immune cells. The thymosin label covers a group of distinct peptides, so the naming can be misleading.
The two share a family name but have different sequences, sizes, and functions. Thymosin beta-4 is a 43-residue peptide associated with actin binding and cell migration. Thymosin alpha-1 is a 28-residue peptide linked mainly to immune signaling.
Thymalfasin is the assigned international nonproprietary name for the synthetic 28-residue peptide. Thymosin alpha-1 is the descriptive research name for the same molecule. Which term appears depends on the context and the regulatory document.
It is usually described as an immunomodulatory peptide rather than a classic circulating hormone. No endocrine gland is known to release it as a primary secretory product, and its measured presence in blood is not firmly established.