Everything below concerns nasal drops. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2026-05-13. Where a claim depends on a specific study, the study is described rather than over-claimed.
Quality documentation for research-grade peptide usually includes a certificate of analysis stating purity, identity, and residual counterion content. Batch-to-batch variation in purity and salt form is a recognized issue, and comparisons across suppliers require attention to the exact counterion, for example acetate versus trifluoroacetate. Sequence verification by tandem mass spectrometry provides stronger evidence than a single mass measurement. For any study reporting biological results, the analytical method and the measured purity should be stated explicitly. Independent verification of supplier claims is considered good practice.
Semax is supplied as a lyophilized powder that appears white to off-white. It dissolves readily in water, phosphate-buffered saline, and other aqueous media, which simplifies preparation of working solutions for laboratory use. The nasal products registered in Russia are dilute aqueous solutions, typically around 0.1 percent peptide by weight. Organic solvents are rarely necessary and can complicate handling. Because the peptide is hygroscopic, weighing should be performed quickly and with minimal exposure to ambient humidity.
各国监管态度分化明显。俄罗斯按处方药管理，部分东欧国家留有使用记录；欧盟与美国未批准其作为药物上市，市面流通品通常标注为研究用化学品。身份差异意味着标示含量、纯度与无菌性缺少统一核查。体育领域还牵涉反兴奋剂名录，跨境携带则受目的地药品法规约束。
Semax 是人工设计的七肽，序列为 Met-Glu-His-Phe-Pro-Gly-Pro，骨架取自促肾上腺皮质激素片段 ACTH(4-10)。它于二十世纪八十年代在苏联的分子遗传学研究机构内合成。设计目标是保留该片段与注意力和记忆相关的活性，同时剔除促皮质激素释放等内分泌作用。此后俄罗斯将其登记为药品并进入临床使用。
当时的短肽研究普遍关注能否穿越血脑屏障、在低剂量下产生中枢效应，Semax 属于这一路线。鼻内给药是其主要使用方式，俄语文献报道的适应症涵盖缺血性卒中、短暂性脑缺血发作、认知功能减退以及视神经病变。这些研究大多发表在当地期刊上，样本规模与终点设置同西方试验惯例存在差异，国际同行对其临床证据的强度看法不一。
| Property | Value | Notes |
|---|---|---|
| Typical purity | ≥95% by HPLC | Research-grade material |
| Detection wavelength | 214 nm | Peptide bond absorbance |
| Reconstitution medium | Sterile water or saline | Prepare fresh or aliquot immediately |
| Storage (solution) | -80 °C, single-use aliquots | Avoid repeated freeze-thaw cycles |
| Common salt form | Acetate or trifluoroacetate | Affects mass and solubility |
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.
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.
The parent fragment ACTH(4-10) carries the sequence Met-Glu-His-Phe-Arg-Trp-Gly. Semax replaces the arginine and tryptophan positions with a proline-glycine-proline tail, giving Met-Glu-His-Phe-Pro-Gly-Pro. That change removes residues associated with adrenal stimulation, so the peptide does not drive cortisol release the way full ACTH does. This distinction shapes how the compound is grouped in the literature, where it sits with neuropeptides and peptide neuromodulators rather than with corticosteroids.
Regulatory status varies sharply by country. Semax is registered for medical use in Russia, where it appears in formularies as a nasal solution, and it also holds registration in a small number of neighbouring states. It has no approval from the United States Food and Drug Administration or the European Medicines Agency, and it is not a scheduled controlled substance in most jurisdictions. Elsewhere it circulates mainly as laboratory material, so purity documentation comes from suppliers rather than from a national pharmacopoeia.
Semax is a synthetic peptide created in the Soviet Union during the early 1980s by researchers working in Moscow. It was built from the short adrenocorticotropic hormone fragment known as ACTH(4-10), and the chain was then extended with three additional amino acids. The resulting molecule was named semax and entered clinical use in Russia in 1994. It is generally described as a nootropic and neuroprotective agent rather than as a hormone analogue.
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.
{\displaystyle \sigma _{11}=\left(\lambda ^{2}-{\cfrac {1}{\lambda ^{2}}}\right)\left({\cfrac {\mu J_{m}}{J_{m}-I_{1}+3}}\right)~;~~\sigma _{22}=0~;~~\sigma _{33}=\left(1-{\cfrac {1}{\lambda ^{2}}}\right)\left({\cfrac {\mu J_{m}}{J_{m}-I_{1}+3}}\right)~.}
Come to Dust is a post trip hop album by UK band Second Person. This is the third and final album from the band, and their first full-length studio release since their debut Chromatography. It was produced by Mark Maclaine (a.k.a. The Silence) at The Silence Corporation Studios, London. Some of the songs on the album were mixed by the Tony Platt.
== Side effects and overdose == Side effects from intra-articular administration can include joint pain, swelling, lameness, and, rarely, infection of the joint. Intramuscular injection can cause dose-dependent inflammation and bleeding, since PSGAG is an analogue of the anticoagulant heparin. In dogs, this may manifest as bleeding from the nose or as bloody stools. The increased risk of bleeding has some advising not to give PSGAG to animals with bleeding disorders, though its only absolute contraindication is hypersensitivity to PSAGs when it is being given intra-articularily. Overdose on PSGAG is quite rare, as the LD50 is over 1000 mg/kg when given intravenously to dogs. Signs of overdose include exacerbated side effects such as joint pain, swelling, and lameness. When dogs received three times the normal dose intramuscularly twice a week for 13 weeks, they had increased liver and kidney weight, as well as microscopic lesions on the liver, kidneys, and lymph nodes. At 11 times the normal dose, they also had increased alanine transferase, cholesterol, and prothrombin time (i.e. coagulation via the extrinsic pathway took longer), and fewer platelets.
Half-Life 2: Episode One continues from the events of Half-Life 2. Building on the original, Episode One added cooperative play with friendly non-player characters such as Alyx Vance, whose new abilities complement Freeman's abilities and allow her to comprehend and respond to the player's actions by lending help. It is set immediately after the end of Half-Life 2 in the war-torn City 17 and nearby areas. Episode One follows scientist Gordon Freeman and his companion Alyx Vance as they continue to cope with the events chronicled in Half-Life 2 and humanity's continuing struggle against the Combine. The game was originally released in 2006 for Windows as a standalone game and was generally well received.
=== Erections === Erections during sleep or when waking up are medically known as nocturnal penile tumescence and colloquially referred to as morning wood. The penis can regularly get erect during sleep and men or males often wake up with an erection. Once a male reaches his teenage years, erections occur much more frequently due to puberty. Erections can occur spontaneously at any time of day, and if clothed may cause a bulge or "hump". This can be disguised or hidden by wearing close-fitting underwear, a long shirt and baggier clothes. Erections are common for male prepubescent children and infants, and can even occur before birth. Spontaneous erections, also known as involuntary or unwanted erections, are normal. Such erections can be embarrassing if they happen in public, such as a classroom or living room.
Sources: en.wikipedia.org
Colonel Kingoro Hashimoto was a member of the Black Dragon Society. He was the cofounder of the Sakurakai ('Cherry Blossom Society'), was responsible for the sinking of the USS Panay and HMS Cricket during the Battle of Nanking, and was involved with two coup attempts against the Japanese government in 1931. The Kokuryūkai was officially disbanded by order of the American Occupation authorities in 1946. According to Brian Daizen Victoria's book, Zen War Stories, the Black Dragon Society was reconstituted in 1961 by Ōmori Sōgen as the Black Dragon Club (Kokuryū-Kurabu) with the aim to "succeed to the spirit of the [prewar] Black Dragon Society and promote the [Shōwa] restoration." According to Victoria, the Kokuryū-Kurabu never attracted more than 150 members.
Antidiabetic effects of naproxen and cromolyn: In normal animal models, both drugs have shown dose-dependent reduction in blood glucose levels and rise in glycogen levels. In chronic type II diabetic model, glucose levels were also reduced, and glycogen level and insulin levels were elevated in a dose-dependent manner with a reduction in plasma glucose. Anti-obesity effects of naproxen and cromolyn: Both drugs showed significant anti-obesity effects as they reduce body weight, resistin, and glucose levels in a dose-dependent manner. They were also found to elevate adiponectin, insulin, and C-peptide levels in a dose-dependent manner.
The War of the Fifth Coalition ended with the Treaty of Schönbrunn (14 October 1809). In the east, only the Tyrolese rebels led by Andreas Hofer continued to fight the French-Bavarian army until finally defeated in November 1809. In the west, the Peninsular War continued. Economic warfare between Britain and France continued: The British continued a naval blockade of French-controlled territory. Due to military shortages and lack of organisation in French territory, many breaches of the Continental System occurred and the French Continental System was largely ineffective and did little economic damage to Great Britain. Both sides entered further conflicts in attempts to enforce their blockade. As Napoleon realised that extensive trade was going through Spain and Russia, he invaded those two countries; the British fought the United States in the War of 1812 (1812–1815). In 1810, the French Empire reached its greatest extent. Napoleon married Marie-Louise, an Austrian Archduchess, with the aim of ensuring a more stable alliance with Austria and of providing the Emperor with an heir (something his first wife, Joséphine, had failed to do). As well as the French Empire, Napoleon controlled the Swiss Confederation, the Confederation of the Rhine, the Duchy of Warsaw and the Kingdom of Italy. Territories allied with the French included:
Long-term informal caregiving is associated with wide-ranging impacts on physical and mental health and on financial circumstances, collectively described as caregiver burden. A range of interventions can help alleviate burden and improve caregiver wellbeing. Effective measures include complementary formal services, training and psychoeducation, psychological therapies such as cognitive behavioural therapy, and support groups.
Another phenotype, Muscle-eye-brain disease (MEB) is the dystroglycanopathy most prevalent in Finland, and is caused by mutations in the POMGnT1, FKRP, FKTN, ISPD, and TMEM5 genes. The POMGnT1 gene is expressed in the same tissues as FKTN, and MEB appears to have a similar severity as FCMD. However, symptoms unique to MEB include glaucoma, atrophy of the optic nerves, and retinal generation. The least severe phenotype of dystroglycanopathies is CMD type 1c (MDC1C), caused by mutations in the FKRP and the LARGE gene, with a phenotype similar to MEB and WWS. MDC1C also includes Limb-Girdle muscular dystrophy.
Sources: en.wikipedia.org
Ganglion tissue is composed of cell bodies, dendrites, and satellite glial cells. Nerves are composed of myelinated and unmyelinated axons, Schwann cells surrounded by connective tissue. The three layers of connective tissue surrounding each nerve are:
=== LGBTQ rights === In June 2019, Pritzker signed an executive order requiring schools across the state to be "affirming and inclusive" of transgender and non-binary students. He also asked the State Board of Education to take a lead on LGBTQ rights by making relevant resources easily accessible.
== Causes == While the exact cause is unclear, it is believed to involve a combination of genetics and an environmental trigger such as exposure to a virus or bacterium, as is the case with many other autoimmune disorders. Around 20 autoantibodies could be involved. It can occur independently of other health problems or as a result of another connective tissue disorder. Sjögren's disease may be associated with other autoimmune diseases, including rheumatoid arthritis (RA), systemic lupus erythematosus (SLE) or systemic sclerosis. The inflammation that results progressively damages the glands. Diagnosis is by biopsy of moisture-producing glands and blood tests for specific antibodies. On biopsy there are typically lymphocytes within the glands.
=== Telangiectasias === Marked telangiectasias (dilated capillaries) occur on the skin of the face, the palmar surface of the hands, and the mucous membranes. Telangiectasias tend to be more numerous in people with other scleroderma related vascular disease (i.e., pulmonary arterial hypertension). The number of telangiectasias and the sites involved tend to increase over time.
Sources: en.wikipedia.org
Solid peptide is best kept frozen at about minus 20 degrees Celsius in a sealed container with desiccant. It should be allowed to reach room temperature before opening to prevent condensation. Repeated warming and cooling of the same vial is discouraged.
Reversed-phase liquid chromatography establishes purity, while mass spectrometry confirms molecular mass. The two techniques are normally used together. Retention time alone is not sufficient evidence of identity.
Different counterions change the mass per unit of peptide and can shift chromatographic behavior. Two samples of equal stated purity may therefore not be directly comparable. Reports should specify the counterion whenever quantitative comparisons are made.
不存在。它是依据 ACTH 的一段序列人工设计的分子，天然蛋白质中找不到与之完全相同的七肽。名称属于研究代号，而非天然物质名。