• Thumbnail for Sigma-1 receptor
    The sigma-1 receptor (σ1R), one of two sigma receptor subtypes, is a chaperone protein at the endoplasmic reticulum (ER) that modulates calcium signaling...
    34 KB (3,858 words) - 22:23, 14 June 2025
  • Sigma receptors (σ-receptors) are protein receptors that bind ligands such as 4-PPBP (4-phenyl-1-(4-phenylbutyl) piperidine), SA 4503 (cutamesine), ditolylguanidine...
    17 KB (1,832 words) - 12:09, 22 May 2025
  • Thumbnail for Sigma-2 receptor
    The sigma-2 receptor (σ2R) is a sigma receptor subtype that has attracted attention due to its involvement in diseases such as neurological diseases, neurodegenerative...
    22 KB (2,332 words) - 10:28, 9 June 2025
  • protein, the sigma-2 receptor, found in cell membranes. It is highly selective for this over the related sigma-1 receptor. The sigma-2 receptor is significant...
    2 KB (216 words) - 21:23, 21 February 2025
  • derivative of phenylpiracetam, is a positive allosteric modulator of the sigma σ1 receptor. It is currently the only racetam known to possess this action. In...
    17 KB (1,705 words) - 02:38, 22 April 2025
  • Thumbnail for Methylphenylpiracetam
    Methylphenylpiracetam (category Receptor modulators)
    derivative of piracetam and a positive allosteric modulator of the sigma-1 receptor. It differs from phenylpiracetam by having a methyl group. E1R is the...
    7 KB (536 words) - 18:47, 24 May 2025
  • Thumbnail for List of neurosteroids
    pregn-5-en-3β-ol-20-one 3β-sulfate – GABAA receptor negative allosteric modulator, NMDA receptor positive allosteric modulator, sigma-1 receptor agonist, TRPM3 agonist,...
    19 KB (2,002 words) - 02:02, 18 May 2025
  • Thumbnail for Neurosteroid
    perspective on the new mechanism of antidepressants: neuritogenesis through sigma-1 receptors". Pharmacopsychiatry. 37 (Suppl 3): S208–13. doi:10.1055/s-2004-832679...
    42 KB (4,402 words) - 13:14, 30 March 2025
  • MS-377 (category Sigma receptor modulators)
    selective antagonist of the sigma-1 receptor. It possesses anti-psychotic properties. MS-377 acts selectively at the sigma-1 receptor as an antagonist. It does...
    4 KB (327 words) - 21:27, 30 March 2025
  • Cutamesine (category Sigma agonists)
    Cutamesine (SA 4503) is a synthetic sigma receptor agonist which is selective for the σ1 receptor, a chaperone protein mainly found in the endoplasmic...
    14 KB (1,447 words) - 10:39, 8 June 2025
  • Thumbnail for Diproqualone
    Diproqualone (category GABAA receptor positive allosteric modulators)
    possibly its agonist activity at both the sigma-1 receptor and sigma-2 receptor (the function of these receptors and their clinical relevance has not yet...
    4 KB (236 words) - 09:07, 21 January 2025
  • Thumbnail for Pridopidine
    Pridopidine (category Sigma agonists)
    molecule investigational drug. Pridopidine is a selective and potent Sigma-1 Receptor agonist. It is being developed by Prilenia Therapeutics and is currently...
    15 KB (1,571 words) - 03:24, 23 December 2024
  • Thumbnail for Cloroqualone
    Cloroqualone (category GABAA receptor positive allosteric modulators)
    resulting from its agonist activity at the β subtype of the GABAa receptor and sigma-1 receptor, and was sold either alone or in combination with other ingredients...
    3 KB (166 words) - 15:42, 4 March 2024
  • as the absolute mean value. In biology, the sigma receptor (σ–receptors) is a type of cell surface receptor. In biochemistry, the σ factor (or specificity...
    18 KB (2,191 words) - 13:06, 3 June 2025
  • Thumbnail for Levopropoxyphene
    as an antitussive. Unlike many antitussives, it binds poorly to the sigma-1 receptor. Friedel-Crafts acylation of benzene with propionyl chloride and aluminium...
    5 KB (318 words) - 05:04, 10 March 2025
  • Thumbnail for Dimethyltryptamine
    Dimethyltryptamine (category Sigma agonists)
    demonstrated the immunomodulatory potential of DMT and 5-MeO-DMT through the Sigma-1 receptor of human immune cells. This immunomodulatory activity may contribute...
    175 KB (16,876 words) - 11:49, 11 June 2025
  • Thumbnail for Sertraline
    Sertraline (redirect from CP 51,974-1)
    Hashimoto K (2017). "Sigma-1 Receptor Agonists and Their Clinical Implications in Neuropsychiatric Disorders". Sigma Receptors: Their Role in Disease...
    105 KB (10,802 words) - 18:22, 11 June 2025
  • Thumbnail for Cycloclavine
    diethylamide), psilocin, and DMT. Differential 5-HT receptor affinities, as well as novel sigma-1 receptor properties, suggest potential future medicinal uses...
    5 KB (376 words) - 00:30, 29 May 2025
  • Thumbnail for Dextromethorphan
    reuptake inhibitor and a sigma-1 receptor agonist. Dextromethorphan and its major metabolite, dextrorphan, also block the NMDA receptor at high doses, which...
    49 KB (4,480 words) - 10:28, 8 June 2025
  • Thumbnail for BD1018
    BD1018 (category Sigma receptor modulators)
    2-a]pyrazine is a selective sigma receptor ligand, with a reported binding affinity of Ki = 5 ± 0.7 nM for the sigma-1 receptor and approximately 10 times...
    2 KB (125 words) - 21:26, 30 March 2025
  • Thumbnail for Psychoactive drug
    their primary neurotransmitter, receptor or method of action. Many drugs act on more than one transmitter or receptor in the brain. Psychoactive drugs...
    83 KB (8,221 words) - 08:39, 24 May 2025
  • Thumbnail for AC927
    or 1-(2-phenylethyl)piperidine is a selective sigma receptor antagonist, with reported binding affinity of Ki = 30 ± 2 nM for the sigma-1 receptor and...
    2 KB (113 words) - 21:26, 30 March 2025
  • Memantine/donepezil (category NMDA receptor antagonists)
    an NMDA receptor antagonist, among various other types of targets like 5-HT3 receptor, Nicotinic acetylcholine receptor, and Sigma-1 receptor) and donepezil...
    5 KB (203 words) - 21:28, 29 May 2025
  • Thumbnail for BD1008
    BD1008 (category 1-Pyrrolidinyl compounds)
    1-pyrrolidineethanamine is a selective sigma receptor antagonist, with a reported binding affinity of Ki = 2 ± 1 nM for the sigma-1 receptor and 4...
    4 KB (281 words) - 08:26, 13 August 2023
  • Thumbnail for PRE-084
    PRE-084 (category Sigma agonists)
    PRE-084 is a sigma receptor agonist, selective for the σ1 subtype. It has nootropic and antidepressant actions in animal studies, as well as antitussive...
    4 KB (302 words) - 15:28, 17 January 2025
  • alpha-1 (α1) adrenergic are G protein-coupled receptors (GPCRs) associated with the Gq heterotrimeric G protein. α1-adrenergic receptors are subdivided...
    16 KB (1,527 words) - 14:51, 25 May 2025
  • Thumbnail for Cannabinoid receptor 1
    Cannabinoid receptor 1 (CB1), is a G protein-coupled cannabinoid receptor that in humans is encoded by the CNR1 gene. And discovered, by determination...
    42 KB (4,355 words) - 16:39, 9 June 2025
  • Thumbnail for Selective serotonin reuptake inhibitor
    Selective serotonin reuptake inhibitor (category Sigma receptor modulators)
    gradual changes in brain signaling and receptor regulation, with some also interacting with sigma-1 receptors, particularly fluvoxamine, which may contribute...
    155 KB (16,564 words) - 21:12, 9 June 2025
  • Thumbnail for Fluspidine
    emission tomography (PET) scans to image σ1 (sigma-1) receptors in the brain and other tissues. Sigma-1 receptors are proteins involved in many neurological...
    6 KB (215 words) - 04:34, 23 May 2025
  • Thumbnail for Dextrallorphan
    Dextrallorphan (category Sigma agonists)
    σ1 receptor sites so that σ2 receptor sites (which have not been cloned yet [when?]) can be studied. It was hypothesized that both of these sigma (σ)...
    10 KB (988 words) - 15:55, 11 January 2025