Everything below concerns TP-7. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2026-01-13. Where a claim depends on a specific study, the study is described rather than over-claimed.
Clinical evidence comes mainly from small studies conducted in Russia, several of which were open-label or lacked robust blinding. Reported outcomes include lower anxiety scores, changes in attention measures, and effects on asthenic states following illness. Sample sizes are typically in the tens of participants, and independent replication outside the region is scarce. Reviews published in English generally note the limited methodological quality of the underlying trials. Whether the compound produces clinically meaningful effects under rigorous conditions remains unresolved.
Proposed mechanisms center on modulation of the GABA system, but no single molecular target has been confirmed. Rodent studies report changes in GABA-A receptor expression and in the turnover of serotonin, dopamine, and norepinephrine in several brain regions. Increases in brain-derived neurotrophic factor and its receptor have also been described after repeated administration. These findings come largely from animal models, and the degree to which they describe human neurochemistry remains an open question. The mechanism is best characterized as multi-system and not fully resolved.
Pharmacokinetic data are limited. Like most short peptides, Selank is vulnerable to plasma and tissue peptidases, and its measured half-life in circulation is short, on a minutes scale. The Pro-Gly-Pro tail slows this degradation but does not eliminate it. Intranasal administration is the route described in most reports, with absorption through the nasal mucosa and a hypothesized path into the central nervous system that avoids the blood-brain barrier. Direct measurements of human brain exposure are unavailable, so distribution claims rest on inference from animal work.
Lyophilized Selank, the dry powder form, is generally stored frozen at minus 20 degrees Celsius or colder for long-term keeping. The solid is hygroscopic and should stay sealed, dry, and protected from light. Once dissolved, the peptide is less stable and is usually held refrigerated at 2 to 8 degrees Celsius for short periods. Repeated freezing and thawing is avoided because it can promote aggregation and loss of activity. Buffers and pH choice also affect how long a solution remains usable.
Solubility behavior is a practical concern for handling. Selank dissolves readily in water and in common aqueous buffers, which simplifies preparation of working solutions. The choice of solvent, ionic strength, and pH can influence aggregation over time, particularly at higher concentrations. Aqueous solutions are typically sterile-filtered before use. Because stability depends on several variables, storage and handling notes should be treated as general guidance rather than fixed rules, and specific values are best confirmed against a certificate of analysis for each batch.
Characterization of Selank in a laboratory setting relies on standard peptide methods. Reverse-phase high-performance liquid chromatography separates the target from related impurities and provides a purity figure, commonly reported as 95 percent or higher. Mass spectrometry, typically electrospray ionization or matrix-assisted laser desorption, confirms the molecular mass and helps detect truncation or modification. Amino acid analysis can verify composition when a sequence-level check is needed. These techniques together establish identity and purity for a given lot.
| Property | Value | Notes |
|---|---|---|
| Route studied | Intranasal | Predominant route in published reports |
| Circulation stability | Short, minutes scale | Peptidases cleave it; the tail slows the process |
| Analytical method | RP-HPLC with mass spectrometry | Used for identity and purity assessment |
| Reported outcome domains | Anxiety and cognitive measures | Derived from small, mostly regional trials |
| Regulatory status | Marketed in Russia | Availability outside that market is limited |
Published clinical work is concentrated in Russian-language journals and generally involves small samples without independent replication. Systematic reviews in English note the shortage of randomised, placebo-controlled trials and the difficulty of verifying methods from translated reports. Outcome measures vary between studies, which complicates pooling of results. Interest in the compound as a cognitive or anxiolytic agent therefore rests on a thinner evidence base than the volume of citations suggests. Replication in well-powered trials with preregistered endpoints would be needed before firm conclusions about efficacy can be drawn.
Proposed mechanisms centre on the GABAergic system. Animal and tissue studies report changes in GABA-A receptor expression and reduced activity of GABA transaminase, the enzyme that degrades GABA. Effects on monoamine turnover, including serotonin and dopamine pathways, are also described, and a separate line of work links the peptide to increased expression of brain-derived neurotrophic factor in hippocampal tissue. Most of these findings come from rodent models and cell preparations. How the individual observations combine into a single coherent mode of action is not settled.
The compound has a calculated molecular weight near 751.9 daltons and carries a net positive charge at physiological pH because of its arginine residue. It dissolves freely in water and in common aqueous buffers, and typically appears as a white or off-white lyophilized powder. The amide backbone makes the molecule susceptible to peptidases, which limits oral use and favors intranasal or parenteral routes. Nomenclature in the literature varies: the substance is also described by the sequence abbreviation TP-7 and by a Russian trade designation.
Regulatory status differs sharply by region. Selank holds a Russian marketing authorization, where it is supplied mainly as nasal drops, while authorities elsewhere have not approved it for medical use. Material sold internationally is therefore usually labeled as a research chemical rather than a medicine. Peer-reviewed publications come predominantly from Russian laboratories, and sample sizes are generally small. Whether the compound produces comparable effects under independent, well-controlled replication remains an open question that the broader literature has not settled.
Identity and purity of selank are established with reversed-phase high-performance liquid chromatography coupled to mass spectrometry. The peptide elutes from C18 columns with acetonitrile gradients in water containing trifluoroacetic acid or formic acid, and detection is usually performed by ultraviolet absorbance near 214 nm. Electrospray ionization in positive mode gives a doubly protonated ion near m/z 377, consistent with a mass of about 752 Da. Amino acid analysis or tandem mass spectrometry of fragment ions confirms the sequence. Because the molecule has no aromatic residues, it lacks a usable 280 nm chromophore, so low-wavelength detection or mass spectrometry is required.
Peptide bonds in selank are susceptible to hydrolysis under strongly acidic or basic conditions, and the terminal proline residues are vulnerable to exopeptidase activity in biological samples. Lyophilized powder stored dry at -20 °C typically remains stable for extended periods, whereas aqueous solutions degrade faster and may lose measurable purity within days to weeks depending on pH, temperature, and microbial load. Repeated freeze-thaw cycles promote aggregation and adsorption to container surfaces. For analytical work, solutions are usually prepared fresh, kept cold, and used within a single working day.
Reverse-phase high-performance liquid chromatography with ultraviolet detection near 214 nanometres is the standard purity method. Mass spectrometry, typically electrospray ionisation, confirms identity through the expected mass-to-charge pattern. Amino acid analysis can verify composition independently. Chiral purity requires separate techniques such as derivatisation followed by chromatographic separation, and such data are rarely reported for research-grade material.
Quantification in biological matrices relies on liquid chromatography coupled to tandem mass spectrometry with stable-isotope internal standards. Low plasma concentrations and adsorption to container surfaces both complicate measurement. Solid-phase extraction is often needed to reduce matrix interference before injection. Reported limits of quantification differ widely between laboratories, which makes direct comparison of pharmacokinetic results difficult and limits meta-analysis.
Peptide bonds are vulnerable to protease attack, and Selank is no exception. Measured half-life in serum is short, on the order of minutes in several reports, which explains why intranasal administration is the common route described in the literature. Absorption across the nasal mucosa partially bypasses first-pass hepatic metabolism. Quantitative data on human bioavailability remain limited and are difficult to compare across studies.
After the riots, the controversial New Economic Policy was launched by Prime Minister Tun Abdul Razak, trying to increase the share of the economy held by the bumiputera. Under Prime Minister Mahathir Mohamad there was a period of rapid economic growth and urbanisation beginning in the 1980s. The economy shifted from being agriculturally based to one based on manufacturing and industry. Numerous mega-projects were completed, such as the Petronas Towers, the North–South Expressway, the Multimedia Super Corridor, and the new federal administrative capital of Putrajaya. In the late 1990s, the Asian financial crisis impacted the country, nearly causing their currency, stock, and property markets to crash; however, they later recovered. The 1MDB scandal was a major global corruption scandal that implicated then-Prime Minister Najib Razak in 2015. The scandal contributed to the first change in the ruling political party since independence in the 2018 general election. In the 2020s, the country was gripped by a political crisis that coincided with health and economic crises caused by the COVID-19 pandemic. This was then followed by an earlier general election in November 2022, which resulted in the first hung parliament in the nation's history. On 24 November 2022, Anwar Ibrahim was sworn in as the 10th Prime Minister of Malaysia, leading a grand coalition government.
It is known also as simpler's joy or holy herb, or more ambiguously as mosquito plant or wild hyssop. The common name blue vervain is also sometimes used, but also refers to V. hastata. Being the only member of its genus in much of its range, it is also simply known as vervain locally. The common names of V. officinalis in many Central and Eastern European languages often associate it with iron, for example:
centriole A cylindrical organelle composed of microtubules, present only in certain eukaryotes. A pair of centrioles migrate to and define the two opposite poles of a dividing cell where, as part of a centrosome, they initiate the growth of the spindle apparatus.
Within the Communist Party of Great Britain, dissent that began with the repudiation of Stalin by John Saville and E. P. Thompson, influential historians and members of the Communist Party Historians Group, culminated in a loss of thousands of party members as events unfolded in Hungary. Peter Fryer, correspondent for the party newspaper The Daily Worker, reported on the violent suppression of the uprising, but his dispatches were heavily censored. Fryer resigned from the paper upon his return and was later expelled from the party. In France, moderates such as historian Emmanuel Le Roy Ladurie resigned, questioning the policy of supporting Soviet actions by the French Communist Party. The French anarchist philosopher and writer Albert Camus wrote an open letter titled The Blood of the Hungarians, criticising the West's lack of action. Jean-Paul Sartre, still a determined party member, criticised the Soviets. In the post-war years, socialism became increasingly influential throughout the so-called Third World after decolonisation. During India's freedom movement and fight for independence, many figures in the leftist faction of the Indian National Congress organised themselves as the Congress Socialist Party. Their politics and those of the early and intermediate periods of Jayaprakash Narayan's career combined a commitment to the socialist transformation of society with a principled opposition to the one-party authoritarianism they perceived in the Stalinist model. In Africa, many independence movements (e.g.
Sources: en.wikipedia.org
== Overview == Several copper(II)-peptide complexes occur naturally. In human plasma, the level of GHK-Cu is about 200 ng/ml at age 20. By the age of 60, the level drops to 80 ng/ml. In humans, GHK-Cu is proposed to promote wound healing, attraction of immune cells, antioxidant and anti-inflammatory effects, stimulation of collagen and glycosaminoglycan synthesis in skin fibroblasts and promotion of blood vessels growth. Recent studies revealed its ability to modulate expression of a large number of human genes. Synthetic GHK-Cu is used in cosmetics as a reparative and anti-aging ingredient.
Some minor opium alkaloids and various substances with opioid action are also found elsewhere, including molecules present in kratom, Corydalis, and Salvia divinorum plants and some species of poppy aside from Papaver somniferum. There are also strains which produce copious amounts of thebaine, an important raw material for making many semi-synthetic and synthetic opioids. Of all of the more than 120 poppy species, only two produce morphine. Amongst analgesics there are a small number of agents which act on the central nervous system but not on the opioid receptor system and therefore have none of the other (narcotic) qualities of opioids although they may produce euphoria by relieving pain—a euphoria that, because of the way it is produced, does not form the basis of habituation, physical dependence, or addiction. Foremost amongst these are nefopam, orphenadrine, and perhaps phenyltoloxamine or some other antihistamines. Tricyclic antidepressants have painkilling effect as well, but they're thought to do so by indirectly activating the endogenous opioid system. Paracetamol is predominantly a centrally acting analgesic (non-narcotic) which mediates its effect by action on descending serotonergic pathways, to increase 5-HT release (which inhibits release of pain mediators). It also decreases cyclo-oxygenase activity. It has recently been discovered that most or all of the therapeutic efficacy of paracetamol is due to a metabolite, AM404, which enhances the release of serotonin and inhibits the uptake of anandamide.
== Animal toxicity == κ-Bungarotoxin can selectively bind to neuronal nAChRs, by which it inhibits or blocks neurotransmission. The toxin shows different effects in diverse animals. For instance, in insects, κ-bungarotoxin blocks transmission at the cholinergic synapse between mechanosensory neurons and an interneuron in the terminal abdominal ganglion. It also blocks nAChRs on a motor neuron in the metathoracic ganglion of a cockroach. Muscle nAChRs in nematodes show a higher sensitivity to κ-bungarotoxin than the alpha-version of the bungarotoxin. Compared to another toxin, only a concentration of 10 nM was needed to block the muscle receptor instead of 100 nM. This also means that there is a difference in effects of the toxin on different animals, because it appears that nematodes are more sensitive to κ-bungarotoxin than insects. In chicks, the κ-bungarotoxin seems to bind with a low affinity to skeletal muscle nicotinic receptors[12]. Although the effects on the chicks have not been described, following the mechanism it is expected that there will be either none or a small amount of muscle paralysis at a low concentration of κ-bungarotoxin. However, the toxin does bind with high affinity to the neuronal nicotinic receptors in the autonomic ganglia, which can block the synaptic transmission already at a low concentration. This would cause effects like respiratory failure.
=== Kazuko's family === Yasuko Tomita as Mine Hosoki, Kazuko's mother. Gaku Hosokawa as Hisao Hosoki, Kazuko's younger brother and later business associate. Erika Shumoto as Akiko Hosoki, Kazuko's sister. Miho Kanazawa as Sachiko Hosoki, Kazuko's sister.
==== Estrogens (estrogen receptor agonists) ==== Conjugated estrogens (conjugated equine estrogens; CEEs; Premarin) – estrogen (estrogen receptor agonist) – atrophic vaginitis, dyspareunia [132] Conjugated estrogens oral (Enjuvia; synthetic conjugated estrogens) – estrogen (estrogen receptor agonists) – atrophic vaginitis [133] Conjugated estrogens/bazedoxifene (Aprela; bazedoxifene acetate/conjugated estrogens; bazedoxifene/conjugated estrogens; bazedoxifene/Premarin; BZA/CE; CE/BZA; conjugated estrogens/bazedoxifene acetate; Duavee; Duavive; Premarin/bazedoxifene; SERM + Premarin) – combination of conjugated estrogens (estrogen) and bazedoxifene (selective estrogen receptor modulator (SERM)) – atrophic vaginitis [134] Estradiol (Estrofem; Innofem; oral estradiol; Vagifem; vaginal estradiol) – estrogen (estrogen receptor agonist) – atrophic vaginitis [135] Estradiol transdermal micro patch (Estradot; Minivelle; Vivelle-Dot) – estrogen (estrogen receptor agonist) – atrophic vaginitis [136] Estradiol vaginal (E2; 17β-estradiol; Estradiol VagiCap; Imvexxy; Joyesta; TX-12-004-HR; TX-004HR; VagiCap; Yuvvexy) – estrogen (estrogen receptor agonist) – atrophic vaginitis [137] Estradiol acetate (Estrace; estradiol acetate intravaginal ring; estradiol acetate IVR; Femring; Menoring) – estrogen (estrogen receptor agonist) – atrophic vaginitis [138] Estriol succinate vaginal gel (6α-hydroxyestradiol; Blissel; Gelistrol) – estrogen (estrogen receptor agonist) – atrophic vaginitis [139] Estriol/lactobacillus (estriol-Lactobcillus acidophilus mixt.; estriol/lyophilised lactobacilli; Gynoflor; ultra-low dose estrogen/lactobacillus) – combination of estriol (estrogen) and lactobacillus (probiotic) – atrophic vaginitis [140] Ospemifene (FC-1271a; Ophena; Osphena; Senshio) – selective estrogen receptor modulator (SERM) – atrophic vaginitis, dyspareunia [141]
Sources: en.wikipedia.org
Distributed renewable energy (DRE) technologies, inclusive of solar-powered walk-in cold rooms, water pumps, TVs and cooking appliances, help small businesses generate jobs and income. They also strengthen agricultural value chains by improving irrigation, cold storage, and food processing and improve essential services in humanitarian settings such as lighting, medical cooling, clean cooking, and water access. CLASP programs unlock and increase financing for innovators and consumers, provide consumer protection and repairability services and advice, and guide government investment decisions. Climate Change Adaptation: Increasingly frequent and severe climate hazards are putting billions of people at risk. From fans and refrigerators that protect health and food, to agricultural and cold chain equipment that support farming and small businesses, efficient appliances help people maintain safety, livelihoods, and stability in the face of increasing climate shocks. CLASP’s research and programs help expand access to efficient appliances and support enabling policies.
== Personal life == Riff Raff has a large number of tattoos, including the logos for WorldStarHipHop, NBA, and MTV, which he had acquired during auditions for the 2009 reality TV show From G's to Gents. Previously, he had a BET tattoo on the front of his right shoulder, which was later covered up with a tattoo of his dog, "Jody Husky". He is a fan of The Simpsons, with a tattoo of Bart holding test tubes that reads "The Freestyle Scientist" on his chest. He also has a large gothic cross below his left shoulder, framed by a prayer that reads, "Dear Jesus, Please Let Me In. Your Child, Horst Simco."
Triple-stranded DNA (also known as H-DNA or Triplex-DNA) is a DNA structure in which three oligonucleotides wind around each other and form a triple helix. In triple-stranded DNA, the third strand binds to a B-form DNA (via Watson–Crick base-pairing) double helix by forming Hoogsteen base pairs or reversed Hoogsteen hydrogen bonds.
Money serves three purposes: a store of value, a medium of exchange, and a unit of account. According to The Economist in 2014, bitcoin functions best as a medium of exchange. In 2015, The Economist noted that bitcoins had three qualities useful in a currency: they are "hard to earn, limited in supply and easy to verify". However, a 2018 assessment by The Economist stated that cryptocurrencies met none of these three criteria. Per some researchers, as of 2015, bitcoin functions more as a payment system than as a currency. In 2014, economist Robert J. Shiller wrote that bitcoin has potential as a unit of account for measuring the relative value of goods, as with Chile's Unidad de Fomento, but that "Bitcoin in its present form... doesn't really solve any sensible economic problem". In 2017, François Velde, senior economist at the Chicago Fed, described bitcoin as "unlikely by itself to replace monies in well-functioning monetary systems." The legal status of bitcoin varies substantially from one jurisdiction to another. Because of its decentralized nature and its global presence, regulating bitcoin is difficult. However, the use of bitcoin can be criminalized, and shutting down exchanges and the peer-to-peer economy in a given country would constitute a de facto ban. The use of bitcoin by criminals has attracted the attention of financial regulators, legislative bodies, and law enforcement. Nobel-prize winning economist Joseph Stiglitz says that bitcoin's anonymity encourages money laundering and other crimes. This is the main justification behind bitcoin bans.
Sources: en.wikipedia.org
Reports describe effects on GABA-A receptor expression, monoamine turnover, and neurotrophic factor levels. These are proposed mechanisms drawn mainly from animal models. No single molecular target has been established.
Intranasal delivery is the route described in most published work. It is used because the peptide is degraded quickly once it reaches circulation. Direct evidence of brain penetration in humans is lacking.
Most trials are small, regionally concentrated, and often lack rigorous blinding or placebo control. Independent replication is limited. Reviews in English generally rate the evidence as preliminary.
Reverse-phase HPLC is the usual method and gives a percentage purity value. Mass spectrometry then confirms the molecular mass. Together they provide a basic identity and purity profile for a lot.