Everything below concerns BDNF expression. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2025-12-25. Where a claim depends on a specific study, the study is described rather than over-claimed.
Pharmacokinetic accounts emphasize rapid breakdown. After intravenous dosing the intact peptide disappears from blood within minutes, and nasal delivery produces low but measurable concentrations. Metabolites rather than the parent molecule may account for part of the observed activity, although the relative contribution is unresolved. Dosing in the literature varies widely and no optimal schedule has been agreed. These gaps are regularly cited as a reason the findings have not produced broad clinical adoption beyond the original research setting.
Proposed mechanisms center on neurotrophic signaling rather than on classical melanocortin receptor activation. Rodent experiments have reported shifts in the expression of brain-derived neurotrophic factor and nerve growth factor after administration, together with changes in the associated receptor systems. Several authors argue that the peptide acts largely through its degradation products and their interaction with peptidergic pathways, but this remains a hypothesis rather than a settled finding. No single molecular target has been identified in a way that the field broadly accepts.
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.
| Property | Value | Notes |
|---|---|---|
| Primary research models | Rodent studies | Largest share of published data |
| Reported markers | BDNF and NGF expression | Measured mainly in animal tissue |
| Common administration | Intranasal | Matches the registered formulation |
| Blood residence time | Minutes | Rapid enzymatic degradation |
| Evidence quality | Small trials, limited replication | Noted repeatedly in reviews |
Circulation time for the peptide is short because peptidases cleave it readily. The Pro-Gly-Pro tail is thought to slow breakdown compared with the bare ACTH fragment, but the gain appears modest. Absorption after intranasal dosing is limited, and only a fraction of a dose is expected to reach the central nervous system. Laboratory concentrations therefore sit well above levels achieved systemically, a gap that complicates translation from bench findings to clinical claims.
The mechanisms attributed to semax are inferred from animal and cell studies rather than traced to one confirmed target. The most frequently cited pathway involves increased expression of brain-derived neurotrophic factor and nerve growth factor in hippocampal and cortical tissue. Some work points to engagement of melanocortin receptors, particularly MC4, which the parent ACTH fragment can activate. Effects on dopaminergic and serotonergic signalling have also been reported. No single account explains all observed results, and the relative weight of each pathway remains unsettled.
Published studies examine a fairly narrow set of endpoints. Rodent experiments commonly measure maze learning, infarct volume after induced ischemia, and tissue levels of neurotrophic factors. Clinical reports from Russian centres describe attention, memory and recovery scores in patients after stroke or transient ischemic attack. Most of those human studies are small and few have been repeated by independent groups. Outcome measures differ between studies, which limits direct comparison.
It is common for photographs, notes, cards, and favourite personal items to be placed in the coffin with the deceased. Bulky and expensive items, such as electric guitars, are occasionally interred with a body. In some ways this mirrors the ancient practice of placing grave goods with a person for their use or enjoyment in the afterlife. In traditional Chinese culture, paper substitutes of the goods are buried or cremated with the deceased instead, as well as paper money specifically purchased for the occasion.
=== Body size === IGF-1R has been shown to have a significant effect on body size in small dog breeds. A "nonsynonymous SNP at chr3:44,706,389 that changes a highly conserved arginine at amino acid 204 to histidine" is associated with particularly tiny body size. "This mutation is predicted to prevent formation of several hydrogen bonds within the cysteine-rich domain of the receptor's ligand-binding extracellular subunit. Nine of 13 tiny dog breeds carry the mutation and many dogs are homozygous for it." Smaller individuals within several small and medium-sized breeds were shown to carry this mutation as well. Mice carrying only one functional copy of IGF-1R are normal, but exhibit a ~15% decrease in body mass. IGF-1R has also been shown to regulate body size in dogs. A mutated version of this gene is found in a number of small dog breeds.
==== Androgen receptor ==== Although it functions as an endogenous precursor to more potent androgens such as testosterone and DHT, DHEA has been found to possess some degree of androgenic activity in its own right, acting as a low affinity (Ki = 1 μM), weak partial agonist of the androgen receptor (AR). However, its intrinsic activity at the receptor is quite weak, and on account of that, due to competition for binding with full agonists like testosterone, it can actually behave more like an antagonist depending on circulating testosterone and dihydrotestosterone (DHT) levels, and hence, like an antiandrogen. However, its affinity for the receptor is very low, and for that reason, is unlikely to be of much significance under normal circumstances.
== Research == Zinc pyrithione is believed to have antiviral activity by acting as a zinc ionophore, facilitating the transport of zinc cations across cellular membranes and into the cytoplasm. This increase in intracellular zinc levels has been shown to suppress viral replication within in vitro cell culture models across several viral families (including coronaviruses, coxsackieviruses, and rhinoviruses) by interfering with RNA-dependent RNA polymerase (RdRp) activity, inhibiting RNA synthesis, and disrupting the proteolytic processing of viral nonstructural polyproteins. Beyond these effects, it appears to inhibit the expression of essential genes in certain viruses in vitro, specifically the immediate early gene ICP4 and the late gene glycoprotein D (gD), effectively halting the viral life cycle at multiple stages. Zinc pyrithione also influences the cellular ubiquitin-proteasome system (UPS) to degrade IκBα, which prevents the activation of NF-κB, a signaling pathway that viruses like herpes simplex virus typically exploit to facilitate their own replication within the host cell.
== Recognition == The tavern was chosen as the “BEST place for a Romantic Getaway” and the Santa Barbara Independent called it "pure MAGIC!" They have been noted as one of the few (if not only) restaurants serving bear. In 2019, it was featured in a Santa Barbara episode of the Cooking Channel's Man v. Food.
Sources: en.wikipedia.org
=== History === Black pepper has been known to Indian cooking since at least 2000 BCE. J. Innes Miller notes that pepper was grown in southern Thailand and in Malaysia starting in early 10th to the 11th century, when the South Indian kings began to extend their empire. The crop was brought to East Malaysia in 1840 by Chinese settlers; its most important source was India, particularly the Malabar Coast, in what is now the state of Kerala. The lost ancient port city of Muziris of the Chera Dynasty, famous for exporting black pepper and various other spices, is mentioned in a number of classical historical sources for its trade with the Roman Empire, Egypt, Mesopotamia, Levant, and Yemen. The ancient history of black pepper is often interlinked with (and confused with) that of long pepper, the dried fruit of closely related Piper longum. The Romans knew of both and often referred to either as just piper. In fact, the popularity of long pepper did not entirely decline until the discovery of the New World and of chilli peppers. Chilli peppers—some of which, when dried, are similar in shape and taste to long pepper—were easier to grow in a variety of locations more convenient to Europe. Before the 16th century, pepper was being grown in Java, Sunda, Sumatra, Madagascar, Malaysia, and everywhere in Southeast Asia. These areas traded mainly with China, or used the pepper locally. Ports in the Malabar area also served as a stop-off point for much of the trade in other spices from farther east in the Indian Ocean.
Upon taking office in 2019, Newsom succeeded Brown as co-chair of the United States Climate Alliance. In September 2019, Newsom vetoed SB 1, which would have preserved environmental protections at the state level that were set to roll back nationally under the Trump administration's environmental policy. In February 2020, the Newsom administration sued federal agencies over the rollbacks to protect imperiled fish in the Sacramento–San Joaquin River Delta in 2019. Newsom attended the 2019 UN Climate Action Summit, where he spoke of California as a climate leader due to the actions of governors before him. In August 2020, he addressed the 2020 Democratic National Convention. His speech mentioned climate change and the wildfires prevalent in California at the time. On September 23, 2020, Newsom signed an executive order to phase out sales of gasoline-powered vehicles and require all new passenger vehicles sold in the state to be zero-emission by 2035. Bills he signed in September with an environmental focus included a commission to study lithium extraction around the Salton Sea. During his 2018 campaign, Newsom pledged to tighten state oversight of fracking and oil extraction. Early in his governorship, his administration approved new oil and gas leases on public lands at about twice the rate of the prior year. When asked about this development, Newsom said he was unaware of the rate of approvals, and he later fired the head of the Division of Oil, Gas and Geothermal Resources.
=== Music === The third season includes several original songs, written by the series composer Christopher Lennertz, with two of them being "Rock My Kiss" and "You've Got a License to Drive (Me Crazy)". Both songs are featured respectively in the first ("Payback") and second episodes ("The Only Man in the Sky"), which were performed by Miles Gaston Villanueva. The music video for the latter was released on September 10, 2022. Lennertz delved further for the creation of these new songs by request of Kripke, creating a fictional in-universe musical boyband named Super-Sweet for which Villanueva's character Supersonic is the leader. Wanting to capture the essence of an authentic boyband during the decades of 1990s and 2000s, musical bands like NSYNC, Backstreet Boys, New Kids on the Block and Boyz II Men were researched by Lennertz, intending to understand the vibes that he needed for his tunes and develop a story for the group in the series in order to achieve and develop the fictional band's sound. Given all the profanity the series had, Lennertz needed to ensure that none of the songs had any swearing since "no boyband would ever do that", while also intending to trick the people to make them believe that they already heard and knew about those songs. Lennertz also wrote other two songs being "America's Son" and "Chimps Don't Cry". Both songs are featured in the second episode ("The Only Man in the Sky"), which were performed by Laurie Holden. The latter song got a music video for which it was released on June 17, 2022.
4-Fluoro-7-nitrobenzofurazan (NBD-F) is a fluorogenic, amine labeling dye that is not fluorescent itself, but covalently reacts with secondary or primary amines to form a fluorescently labeled product. It and other fluorogenic benzofurans (i.e. NBD-Cl) are used for derivitization in HPLC applications. After the fluorogenic reaction, it can be detected with an excitation wavelength of 470 nm (blue) and an emission wavelength of 530 nm (green), enabling an HPLC limit of detection of 10 fmol.
=== Diet === Adapting nutritional intake can help to prevent and treat overtraining. Athletes in different fields will emphasize different proportional nutrition factors on the diet mainly including proteins, carbohydrates and fats. The diet includes a calorie intake that at least matches expenditure, ideally forming a suitable macronutrient ratio. During the recovery process, extra calories from diets may help the body speed the recovery. Keeping the body nourished with a balanced diet and hydrated with an adequate supply of water are both important for a successful recovery. Finally, addressing vitamin deficiencies with improved diet and/or nutritional supplements has been proposed as a way to speed up recovery.
Sources: en.wikipedia.org
The main proposal is modulation of neurotrophic factors such as brain-derived neurotrophic factor, supported largely by animal experiments. Receptor-level targets have not been firmly established. Most reviews describe the mechanism as only partially characterized.
The compound is registered as a medicine in Russia, so clinical work has concentrated there. Trials elsewhere are few and generally small. This geographic concentration is a recognized limitation in evidence reviews.
Some fraction may reach the central nervous system through olfactory pathways, and this is often cited as the rationale for the nasal route. The size of that fraction in humans is not well quantified. Blood concentrations after nasal dosing are low, which complicates measurement.
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.