The short version of 胸腺素α1 fits in a sentence. The long version — which is the one that helps — is below.
Reviewed 2025-12-06. Anything still debated is marked as such rather than presented as settled.
Overall evidence quality varies considerably. A large share of published reports come from single centers, rely on surrogate immunological markers, or lack adequate control groups. Systematic reviews have highlighted this heterogeneity as a barrier to pooling results. Open questions include which patients, if any, might benefit, what treatment duration is appropriate, and whether any effect is independent of standard care. The peptide is often described as an immune modulator rather than a therapy for one disease, which complicates confirmatory trial design.
Thymosin alpha 1 was identified in 1977 as a component of thymosin fraction 5, a heterogeneous preparation used in early studies of thymic function. Investigators purified the active material and determined its amino acid sequence, which enabled chemical synthesis. Work in the following decades concentrated on T-cell maturation and immune reconstitution in animals and small human cohorts. Early preparations varied in composition, so results from that period are difficult to compare with studies using defined synthetic peptide.
Laboratory work indicates that the peptide acts on cells of both the innate and adaptive immune systems. Reported effects include signalling through Toll-like receptors on dendritic cells, enhanced T-cell maturation, and increased natural killer cell activity. These actions are described largely from cell-culture and animal experiments, and the precise receptor-level events remain incompletely defined. Studies in humans have generally measured immune markers rather than a single defined molecular target. The resulting picture remains partly descriptive.
Clinical research has examined the peptide in chronic hepatitis B and C, as a vaccine adjuvant, and in sepsis and oncology settings. Results across trials have been mixed, and several studies were small or conducted under differing protocols. Regulatory status varies by country, and the compound is not approved in every jurisdiction where it is studied. Evidence for any single indication should be read with attention to sample size and endpoint choice.
Thymosin alpha-1 is a 28-residue peptide first isolated from thymus tissue in the 1970s. It corresponds to the N-terminal portion of thymosin beta-4, from which it is cleaved in vivo. The peptide carries an acetyl group at its N-terminus, a modification that affects its charge and stability. Synthetic material produced by solid-phase peptide synthesis is chemically identical to the natural fragment and is the form used in research and clinical studies.
| Property | Value | Notes |
|---|---|---|
| First described | 1977 | Reported as a component of thymosin fraction 5 |
| Sequence length | 28 amino acids | N-terminal residue is acetylated |
| Net charge at neutral pH | Negative | Reflects a high proportion of acidic residues |
| Principal studied uses | Chronic hepatitis B and vaccine adjuvant | Research uses outnumber approved indications |
| Regulatory status | Approved in a limited number of countries | Not approved in the United States or most of Europe |
市售的胸腺素α1通常以冻干粉形式提供，溶解后用于注射。其氨基酸组成包括多个酸性残基，因此在中性pH下带负电荷。该肽可溶于水和生理盐水，但在有机溶剂中溶解度有限。储存条件通常为冻干状态下负20摄氏度，溶解后需冷藏并避免反复冻融。常见的同义词包括胸腺肽α1、thymalfasin和Tα1。
胸腺素α1（thymosin alpha 1，Tα1）是一种由28个氨基酸组成的酸性肽，N端被乙酰化，分子量约为3108道尔顿。该肽最早从牛胸腺组织提取物中分离，属于胸腺素组分5的一个成分。其序列在不同哺乳动物中高度保守，提示其具有基本的生物学功能。名称中的“α1”指其在电泳中的迁移位置，并非表示亚型编号。它既存在于胸腺，也存在于脾脏和淋巴结等免疫组织。
Biologically, the peptide is studied mainly in the context of immune cell development and regulation. It is produced in the thymus and in several other tissues, and it appears to influence the maturation and activity of T cells and other immune populations. Laboratory work describes effects on cytokine production, on the balance between T cell subsets, and on the function of dendritic cells. Much of this evidence comes from cell culture and animal models, so the extent to which the same pathways operate in humans remains an open question.
Clinical interest has centered on chronic viral hepatitis, on immune restoration in various conditions, and on use as an adjuvant intended to improve responses to vaccines. Trials have reported mixed results, and regulatory status differs sharply between countries; in some places it is a prescription product, while elsewhere it is sold without an approved therapeutic indication. Because published studies vary widely in design, population, and endpoints, comparisons across them are difficult and no single conclusion covers the whole literature.
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.
== Research == A meta-analysis of short-term randomized controlled trials has shown similar efficacy on glycemic control between empagliflozin 10mg and 25mg in people with type 2 diabetes. While there may be a higher reduction in HbA1c with higher doses, this difference is more clinically significant when the patients' baseline HbA1c is ≥ 8.5%.
== Preparation == Tofu has little flavor or smell of its own. Consequently, tofu can be used in both savory and sweet dishes, acting as a bland background for presenting the flavors of the other ingredients used. In order to flavor the tofu, it is often marinated in soy sauce, chillis, or sesame oil. A common cooking technique in many parts of East and Southeast Asia involves deep frying tofu in vegetable oil like sunflower or canola.
The main application for air filters are combustion air to engines. The filter papers are transformed into filter cartridges, which then is fitted to a holder. The construction of the cartridges mostly requires that the paper is stiff enough to be self-supporting. A paper for air filters needs to be very porous and have a weight of 100–200 g/m2. Normally particularly long fibrous pulp that is mercerised is used to get these properties. The paper is normally impregnated to improve the resistance to moisture. Some heavy duty qualities are made to be rinsed and thereby extend the life of the filter.
The medical anthropologist Charles Leslie writes that Chinese, Greco-Arabic, and Indian traditional medicines were all grounded in systems of correspondence that aligned the organization of society, the universe, and the human body and other forms of life into an "all-embracing order of things". Each of these traditional systems was organized with such qualities as heat and cold, wet and dry, light and darkness, qualities that also align the seasons, compass directions, and the human cycle of birth, growth, and death. They provided, Leslie continued, a "comprehensive way of conceiving patterns that ran through all of nature," and they "served as a classificatory and mnemonic device to observe health problems and to reflect upon, store, and recover empirical knowledge," but they were also "subject to stultifying theoretical elaboration, self-deception, and dogmatism." The doctrines of Chinese medicine are rooted in books such as the Yellow Emperor's Inner Canon and the Treatise on Cold Damage, as well as in cosmological notions such as yin–yang and the five phases. The Compendium of Materia Medica dates back to around 1,100 BCE when only a few dozen drugs were described. By the end of the 16th century, the number of drugs documented had reached close to 1,900. And by the end of the last century, published records of CMM had reached 12,800 drugs." Starting in the 1950s, these precepts were standardized in the People's Republic of China, including attempts to integrate them with modern notions of anatomy and pathology.
Sources: en.wikipedia.org
==== Fungal ==== Oral fungal infections are most commonly caused by different Candida species, such as Candida albicans, Candida glabrata and Candida tropicalis resulting in oral candidiasis. There are several predisposing factors to fungal infections, such as diabetes and recent use of antibiotics or steroid inhalers. Management includes identifying and addressing contributory factors, the use of topical or systemic antifungal agents, and oral hygiene instruction. Different presentations of oral candidiasis include:
As a result, whey protein is now widely used in sports and recovery drinks, meal-replacement beverages, medical nutrition, and other products, completing its transition from a dairy by-product into a major beverage ingredient.
== Further reading == Food and Nutrition Information Center. "Dietary Supplements: General Resources for Consumers" (PDF). National Agricultural Library. Archived from the original (PDF) on 2008-12-16. List of resources that provides an overview of herbal and dietary supplements, including use, regulation, research, and cautionary information. "Questions to Ask Before Taking Vitamin and Mineral Supplements". nutrition.gov. Archived from the original on 2017-06-22. "Dietary Supplement Fact Sheets". NIH Office of Dietary Supplements.
Soybean meal is used in food and animal feeds, principally as a protein supplement, but also as a source of metabolizable energy. Typically 1 bushel (i.e. 60 lbs. or 27.2 kg) of soybeans yields 48 lbs. (21.8 kg) of soybean meal. Most soybean meal is defatted, produced as a co-product of soybean oil extraction. Some, but not all, soybean meal contains ground soybean hulls. Soybean meal is heat-treated during production, to denature the trypsin inhibitors of soybeans, which would otherwise interfere with protein digestion.
Extrapyramidal signs Rhabdomyolysis, acute Ataxia Irregular heart beat Mild hypothyroidism Loss of milestones Delayed speech and language acquisition Delayed walking Abnormal liver enzymes Gastrointestinal dysmotility Generalised brain atrophy High blood ammonia levels Low blood sugar Involuntary muscle contractions Increased lactate in body Prolonged QT interval Seizure Occasional:
Sources: en.wikipedia.org
Trials differ in patient population, dose schedule, background treatment, and the endpoints used to judge success. Many are small and single-center, so random variation can dominate the reported effects.
Authorization is limited to a small number of countries and covers specific indications such as chronic hepatitis B and vaccine adjuvant use. Availability and labelling differ by jurisdiction.
Most reviews describe it as an immunomodulatory agent with an uncertain clinical effect. They generally call for larger, better-controlled trials before firm conclusions are drawn.
It corresponds to the first 28 amino acids of thymosin beta-4, a larger protein found in many tissues. The fragment is acetylated at its N-terminus and is produced synthetically for research and pharmaceutical use. Synthetic and natural forms share the same sequence.