Everything below concerns 反相色谱. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2025-11-18. Where a claim depends on a specific study, the study is described rather than over-claimed.
Semax binds to melanocortin receptors and is thought to influence neuronal survival and plasticity rather than to act through the adrenal axis. Laboratory work has shown increased expression of brain-derived neurotrophic factor and nerve growth factor in treated tissue. Changes in c-Fos, a marker of neuronal activation, have also been reported. Because the peptide is rapidly degraded by peptidases, its effects are generally attributed to downstream signaling cascades rather than to sustained receptor occupancy.
Published studies are dominated by animal models of stroke, ischemia, and cognitive impairment, with a smaller number of human trials conducted in Russia. Many of the human reports are small, single-center, and published in Russian-language journals, which limits independent scrutiny. Outcome measures vary between studies and often rely on clinician-rated scales rather than objective biomarkers. Systematic reviews have noted the methodological weaknesses and called for larger, preregistered trials before firm conclusions can be drawn.
Claims about enhanced focus, memory, or mood in healthy people rest mostly on anecdotal reports and community discussion rather than on controlled data. It remains unclear whether any cognitive benefit observed in patients recovering from brain injury would extend to uninjured users. Dose-response relationships, long-term safety, and interactions with other drugs are not well characterized in the peer-reviewed literature. Questions about optimal route of administration and treatment duration likewise remain open.
The peptide is prone to several degradation pathways. Oxidation of the methionine residue produces a sulfoxide that elutes close to the parent peak in many chromatographic systems. Hydrolysis of peptide bonds and deamidation of susceptible residues in related sequences also reduce purity over time. Lyophilised material kept dry at minus twenty degrees Celsius and shielded from light is the most stable form commonly described in laboratory practice.
Material sold for laboratory use varies widely in stated purity and documentation. A certificate of analysis should list the analytical method, the column and detector used, and the observed purity value. Independent verification by an outside laboratory is the practical way to confirm identity when documentation is absent or internally inconsistent. Regulatory status differs by country, and a product legal in one jurisdiction may be unapproved or controlled in another.
Identity and purity of semax are established with reversed-phase high-performance liquid chromatography coupled to ultraviolet detection, usually at 214 nanometres. Mass spectrometry, most often electrospray ionisation in positive mode, confirms the molecular mass and reveals truncated sequences. Amino acid analysis and peptide mapping after enzymatic digestion provide additional structural confirmation. Laboratories typically report purity as the percentage area of the main peak, a figure that does not capture isomeric or oxidised variants unless the method resolves them.
| Property | Value | Notes |
|---|---|---|
| Appearance | White lyophilized powder | Typical for synthetic peptides |
| Solubility | Freely soluble in water | Also soluble in saline |
| Storage temperature | -20 C or below | Protect from repeated freeze-thaw |
| Analytical method | Reverse-phase HPLC | Confirms purity and identity |
| Common synonym | ACTH(4-10) analog | Reflects structural origin |
Lyophilised powder is normally kept at -20 °C in a desiccated container, with some suppliers recommending -80 °C for long-term archival storage. Repeated freeze-thaw cycles are the most common cause of avoidable loss, so aliquoting before freezing reduces variability between working sessions. Dissolved peptide is far less stable than the dry solid and is usually prepared fresh or held briefly at 4 °C. Aqueous solutions support both hydrolysis of the backbone and oxidation of the N-terminal methionine, and these two routes dominate degradation under ordinary laboratory conditions.
Identity and purity are confirmed with reversed-phase high-performance liquid chromatography, typically monitored at 214 nanometres where the peptide bond absorbs. Mass spectrometry, either electrospray or MALDI-TOF, verifies molecular mass against the theoretical value and detects truncation or adduct formation. Amino acid analysis and peptide mapping provide additional confirmation when required. The most frequently reported impurities are deletion sequences from incomplete coupling, methionine sulfoxide from oxidation, and dimeric species formed through non-covalent aggregation. Impurity profiles depend strongly on the synthesis and purification route chosen by the producer.
Published research has focused mainly on neurological and cognitive endpoints in animal models, with proposed mechanisms involving brain-derived neurotrophic factor and related signalling pathways. A substantial share of the human data originates from a limited number of research groups, and independent replication in other countries remains sparse. Regulatory status reflects that distribution: the peptide is registered as a medicine in Russia and appears in some neighbouring markets, while elsewhere it is handled as a research chemical without approved therapeutic labelling. Questions about dose-response relationships, long-term effects, and comparability across studies are still open.
稳定性主要由水解与氧化两条路径支配。肽键在中性或弱酸性条件下相对稳定，遇到强碱或长时间高温则明显断裂；甲硫氨酸侧链容易被氧化成亚砜，使主峰前移并拉低实际含量。金属离子、光照和反复冻融会进一步促进降解或聚集。冻干粉在低温避光条件下可存放较长时间，配制后的水溶液通常需要冷藏并尽快用完。
纯度评估以反相高效液相色谱为主，通过主峰面积百分比给出粗略结果，再配合电喷雾质谱核对分子量。氨基酸分析可验证组成比例，手性色谱或毛细管电泳用于检查残基构型。常见杂质包括缺失序列的短肽、氧化产物与二聚体。由于多数市售品不附带完整检验报告，独立第三方检测常被用来核实标称值。
从分子层面看，Semax 是线性七肽，没有二硫键、糖基或脂链修饰，N 端为游离氨基，C 端为游离羧基。分子含组氨酸与谷氨酸侧链，因此在水和甲醇等极性溶剂中溶解良好，在非极性溶剂中溶解有限。计算分子量约为 814 Da，与其质子化离子的质荷比吻合，可用于质谱确认。
== Manufacturing Process == Sudden Coffee used single-origin coffee beans, sourced from specialty roasters, including Equator Coffee & Intelligentsia Coffee. Next, the beans are fully brewed into liquid coffee. Sudden Coffee has developed a unique brewing process to brew at a lower temperature (85-90 C) than regular instant coffee, to prevent over-extraction, retaining natural sweetness, fruitiness, and acidity. The coffee is then freeze dried in small batches to give more control over quality. It is then packed by hand in recyclable containers for freshness.
Apomorphine, sold under the brand name Apokyn among others, is a type of aporphine that functions as a non-selective dopamine agonist which activates both D2-like and, to a much lesser extent, D1-like receptors. It also acts as an antagonist of 5-HT2 and α-adrenergic receptors with high affinity. The compound is an alkaloid belonging to Nymphaea caerulea (blue lotus), but is also historically known as a morphine decomposition product made by boiling morphine with concentrated acid, hence the -morphine suffix. Contrary to its name, apomorphine does not actually contain morphine or its skeleton, nor does it bind to opioid receptors. The apo- prefix relates to it being a morphine derivative ("[comes] from morphine"). Historically, apomorphine has been tried for a variety of uses, including as a way to relieve anxiety and craving in alcoholics, an emetic (to induce vomiting), for treating stereotypies (repeated behaviour) in farmyard animals, and more recently in treating erectile dysfunction. Currently, apomorphine is used in the treatment of Parkinson's disease. It is a potent emetic and should not be administered without an antiemetic such as domperidone. The emetic properties of apomorphine are exploited in veterinary medicine to induce therapeutic emesis in canines that have recently ingested toxic or foreign substances. Apomorphine was also used as a private treatment of heroin addiction, a purpose for which it was championed by the author William S. Burroughs.
Vance describes his upbringing and family background while growing up in Middletown, Ohio, where his mother and her family had moved after World War II from Breathitt County, Kentucky. Vance states that their Appalachian culture valued traits such as loyalty and love of country despite family violence and verbal abuse. Vance recounts his grandparents' alcoholism as well as his mother's history of drug addictions and failed relationships. Vance's grandparents reconciled and became his guardians. His strict but loving grandmother pushed Vance, who went on to complete undergraduate studies at Ohio State University and earned a Juris Doctor degree from Yale Law School. Vance raises questions about the responsibility of his family and local people for their misfortunes. Vance suggests that hillbilly culture fosters social disintegration and economic insecurity in Appalachia. He cites a personal experience where, while working as a grocery store cashier, he saw welfare recipients with cell phones when he could not afford one. Vance's antipathy toward those who seemed to profit from poor behavior while he struggled is presented as a rationale for Appalachia's political swing from voting Democratic to a strong Republican affiliation. Vance tells stories highlighting the lack of work ethic of the local people, including the story of a man who quit his job after expressing dislike over his work hours, and a co-worker with a pregnant girlfriend who skipped work unexcused.
These early experiments with animal blood provoked a heated controversy in Britain and France. Finally, in 1668, the Royal Society and the French government both banned the procedure. The Vatican condemned these experiments in 1670. Blood transfusions fell into obscurity for the next 150 years.
Sources: en.wikipedia.org
==== Elsewhere ==== In Australia, the labourist and socialist movements were gaining traction and the Australian Labor Party (ALP) was formed in Barcaldine, Queensland in 1891 by striking pastoral workers. In 1889, a minority government led by the party was formed in Queensland, with Anderson Dawson as the Premier of Queensland, where it was founded and was in power for one week, becoming the world's first government led by democratic socialists. The ALP has been the main driving force for workers' rights and the welfare state in Australia, backed by Australian trade unions, in particular the Australian Workers' Union. Brazil’s First Socialist Congress occurred in Rio de Janeiro in 1902. Later that year, in São Paulo, another Socialist Congress took place and the Workers' Socialist Party (Partido Operário Socialista) was founded, considered to be the first socialist party in Brazil. In 1895, the Socialist Workers Party (Partido Socialista Operário) was founded. That same year, Silvério Fontes, considered the first Brazilian Marxist, launched the Socialist Center of Santos, which soon published the socialist magazine A Questão Social (The Social Question) and newspaper O Socialista (The Socialist).
=== Biopolymer and nanotechnology applications === Aramwit coedited Nanotechnology in Drug Delivery with Glen S. Kwon and Melgardt M. de Villiers, exploring nanotechnology-based drug delivery systems and their application for the delivery of small molecules, proteins, peptides, oligonucleotides, and genes. Her research highlighted that alginate/chitosan beads enhance the stability and bioavailability of mulberry-extracted anthocyanin, with 0.05% chitosan solution proving most effective for encapsulation and gastric resistance, while Eugenol-embedded calcium citrate nanoparticles (Eu-CaCit NPs) show potential as a biocompatible topical delivery system, improving dermal penetration and reducing skin irritation.
Clothing, sportswear and accessories: polyester and PVC clothing, spandex, sport shoes, wetsuits, footballs and billiard balls, skis and snowboards, rackets, parachutes, sails, tents and shelters. Electronic and photonic technologies: organic field effect transistors (OFET), light emitting diodes (OLED) and solar cells, television components, compact discs (CD), photoresists, holography. Packaging and containers: films, bottles, food packaging, barrels. Insulation: electrical and thermal insulation, spray foams. Construction and structural applications: garden furniture, PVC windows, flooring, sealing, pipes. Paints, glues and lubricants: varnish, adhesives, dispersants, anti-graffiti coatings, antifouling coatings, non-stick surfaces, lubricants. Car parts: tires, bumpers, windshields, windscreen wipers, fuel tanks, car seats. Household items: buckets, kitchenware, toys (e.g., construction sets and Rubik's Cube). Medical applications: blood bag, syringes, rubber gloves, surgical suture, contact lenses, prosthesis, controlled drug delivery and release, matrices for cell growth. Personal hygiene and healthcare: diapers using superabsorbent polymers, toothbrushes, cosmetics, shampoo, condoms. Security: personal protective equipment, bulletproof vests, space suits, ropes. Separation technologies: synthetic membranes, fuel cell membranes, filtration, ion-exchange resins. Money: polymer banknotes and payment cards. 3D printing.
Sources: en.wikipedia.org
== Creationism == A Methodist from age ten, and later a fundamentalist Baptist, Gish believed that the Genesis creation narrative was historical fact. After reading the booklet Evolution, "Science Falsely So-called" in the late 1950s, Gish became persuaded that science had produced falsifiable evidence against evolutionary theory, particularly the origin of life, and that various fields of science offered corroborating evidence in support of the Genesis creation narrative. He joined the American Scientific Affiliation (ASA), an association of Christian scientists, mistakenly assuming the group supported creationism. Through his affiliation at the ASA, Gish met geneticist and creationist William J. Tinkle, who in 1961 invited Gish to join a newly formed anti-evolution caucus within the ASA. In 1971, Gish became a member of the faculty at San Diego Christian College, working in its research division before accepting a position at the Institute for Creation Research (independent since 1981). He was the author of several books and articles espousing creationism. His best-known work, Evolution: The Fossils Say No!, published in 1972, has been widely accepted by creationists as an authoritative reference. Gish initially "assigned low priority to the question of [the] age [of the Earth]". At his death on March 5, 2013, Gish held the position of Senior Vice-President Emeritus at the ICR.
Additionally, patients have not substituted other drugs as a method of overdose. The decision to withdraw co-proxamol has met with some controversy; it has been brought up in the House of Commons on two occasions, 13 July 2005 and on 17 January 2007. Patients have found alternatives to co-proxamol either too strong, too weak, or with intolerable side effects. During the House of Commons debates, it is quoted that originally some 1,700,000 patients in the UK were prescribed co-proxamol. Following the phased withdrawal, this has eventually been reduced to 70,000. However, this apparently is the residual pool of patients who cannot find alternate analgesia to co-proxamol. The safety net of prescribing co-proxamol after license withdrawal from 31 December 2007, on a "named patient" basis where doctors agree a clinical need exists, has been rejected by most UK doctors because the wording that "responsibility will fall on the prescriber" is unacceptable to most doctors. Some patients intend to take the case to the European Court of Human Rights. However, the European Medicines Agency has recently backed the agency's decision, and recommended in June 2009 that propoxyphene preparations be withdrawn across the European Union. On 28 March 2017, NHS Clinical Commissioners announced that co-proxamol will be no longer available under NHS England as part of £400m of spending cuts for prescriptions that are believed to have little or no clinical value.
Treosulfan, sold under the brand name Trecondi among others, is an alkylating medication given to people before they have a bone marrow transplant from a donor known as allogeneic hematopoietic stem cell transplantation. It is used as a 'conditioning' treatment to clear the bone marrow and make room for the transplanted bone marrow cells, which can then produce healthy blood cells. It is used together with another medicine called fludarabine in adults and children from one month of age with blood cancers as well as in adults with other severe disorders requiring a bone marrow transplant. It belongs to the family of drugs called alkylating agents. In the body, treosulfan is converted into other compounds called epoxides which kill cells, especially cells that develop rapidly such as bone marrow cells, by attaching to their DNA while they are dividing. DNA cross-linking is considered a primary mechanism underlying the pharmacological action of treosulfan, and epoxides formed from treosulfan may cross-link DNA via at least two chemical pathways. Preclinical studies in animal models have shown that treosulfan is widely distributed to the liver, lungs, bone marrow, and skeletal muscle, with tissue-to-plasma ratios of 0.96, 0.82, 0.82, and 0.77, respectively. Lower biodistribution was observed in the brain and the aqueous humor of the eye (both 0.10). In juvenile rats with an immature blood–brain barrier, brain exposure was higher (0.15) than in young adult rats.
When allowed to react with superacids, sulfuric acid can act as a base and can be protonated, forming the [H3SO4]+ ion. Salts of [H3SO4]+ have been prepared (e.g. trihydroxyoxosulfonium hexafluoroantimonate(V) [H3SO4]+[SbF6]−) using the following reaction in liquid HF:
Sources: en.wikipedia.org
It is associated with the melanocortin receptor family, particularly subtypes found in the central nervous system. This interaction is separate from the adrenal pathway activated by full-length ACTH.
Peptidases degrade the compound within minutes in circulation. This short half-life is one reason nasal delivery is used, placing the substance close to the olfactory and trigeminal pathways.
No large multicenter trials have been published in English-language journals. The existing human evidence consists mainly of smaller studies conducted in Russia, which limits generalization.
Reversed-phase high-performance liquid chromatography is the standard method, with detection in the ultraviolet range. Peak area percentage yields a purity figure for the main component. Mass spectrometry is normally run alongside to confirm molecular identity.