Coluracetam

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Coluracetam
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Clinical data
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  • None
Legal status
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Identifiers
  • N-(2,3-Dimethyl-5,6,7,8-tetrahydrofuro[2,3-b]quinolin-4-yl)-2-(2-oxo-1-pyrrolidinyl)acetamide
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Chemical and physical data
FormulaC19H23N3O3
Molar mass341.411 g·mol−1
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  • Cc1c(oc2c1c(c3c(n2)CCCC3)NC(=O)CN4CCCC4=O)C
  • InChI=1S/C19H23N3O3/c1-11-12(2)25-19-17(11)18(13-6-3-4-7-14(13)20-19)21-15(23)10-22-9-5-8-16(22)24/h3-10H2,1-2H3,(H,20,21,23)
  • Key:PSPGQHXMUKWNDI-UHFFFAOYSA-N
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Coluracetam (INN; development code BCI-540; formerly MKC-231) is a purported nootropic agent of the racetam family.[1] It contains a chemical group that is a bioisostere of the 9-amino-tetrahydroacridine family. It was initially developed and tested by the Mitsubishi Tanabe Pharma Corporation for Alzheimer's disease. After the drug failed to reach endpoints in its clinical trials it was in-licensed by BrainCells Inc for investigations into major depressive disorder (MDD), which was preceded by being awarded a "Qualifying Therapeutic Discovery Program Grant" by the state of California.[2] Findings from phase IIa clinical trials have suggested that it would be a potential medication for comorbid MDD with generalized anxiety disorder (GAD).[3] BrainCells Inc is currently[when?] out-licensing the drug for this purpose.[4] It may also have potential use in prevention and treatment of ischemic retinopathy and retinal and optic nerve injury.[medical citation needed]

Coluracetam has been shown to reverse the loss of choline acetyltransferase production in the medial septal nucleus of rats exposed to phencyclidine (PCP), and is considered a potential therapeutic drug for schizophrenia.[5]

The drug has been sold online as a nootropic.[6] It is anecdotally claimed to produce visual effects such as improved color, slight synaesthesia, and an "HD visual effect", analogously to sub-hallucinogenic dose of the serotonergic psychedelic psilocybin.[6] Other purported effects include enhanced mood and reduced anxiety.[6]

Pharmacology

Mechanism of action

Coluracetam enhances high-affinity choline uptake (HACU),[7] which is the rate-limiting step of acetylcholine (ACh) synthesis. Studies have shown coluracetam to improve learning impairment on a single oral dose given to rats which have been exposed to cholinergic neurotoxins. Subsequent studies have shown that it may induce long-lasting procognitive effects in cholinergic neurotoxin-treated rats by changing the choline transporter regulation system.[8]

Society and culture

Australia

Coluracetam is a schedule 4 substance in Australia under the Poisons Standard (February 2020).[9] A schedule 4 substance is classified as "Prescription Only Medicine, or Prescription Animal Remedy – Substances, the use or supply of which should be by or on the order of persons permitted by State or Territory legislation to prescribe and should be available from a pharmacist on prescription."[9]

See also

References

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  1. ^ Page Module:Citation/CS1/styles.css has no content.Bessho T, Takashina K, Tabata R, Ohshima C, Chaki H, Yamabe H, et al. (April 1996). "Effect of the novel high affinity choline uptake enhancer 2-(2-oxopyrrolidin-1-yl)-N-(2,3-dimethyl-5,6,7,8-tetrahydrofuro[2,3-b] quinolin-4-yl)acetoamide on deficits of water maze learning in rats". Arzneimittel-Forschung. 46 (4): 369–73. PMID 8740080.
  2. ^ Qualifying Therapeutic Discovery Project Grants for the State of California, IRS.gov.
  3. ^ BrainCells Inc. Announces Results From Exploratory Phase 2a Trial of BCI-540 Script error: No such module "webarchive".
  4. ^ BCI-540 (coluracetam) | BrainCells Script error: No such module "webarchive".
  5. ^ Page Module:Citation/CS1/styles.css has no content.Shirayama Y, Yamamoto A, Nishimura T, Katayama S, Kawahara R (September 2007). "Subsequent exposure to the choline uptake enhancer MKC-231 antagonizes phencyclidine-induced behavioral deficits and reduction in septal cholinergic neurons in rats". European Neuropsychopharmacology. 17 (9): 616–26. doi:10.1016/j.euroneuro.2007.02.011. PMID 17467960. S2CID 22967684.
  6. ^ a b c Page Module:Citation/CS1/styles.css has no content."Колурацетам (Coluracetam)". АИПСИН (in русский). Retrieved 1 January 2026.
  7. ^ Page Module:Citation/CS1/styles.css has no content.Murai S, Saito H, Abe E, Masuda Y, Odashima J, Itoh T (1994). "MKC-231, a choline uptake enhancer, ameliorates working memory deficits and decreased hippocampal acetylcholine induced by ethylcholine aziridinium ion in mice". Journal of Neural Transmission. General Section. 98 (1): 1–13. doi:10.1007/BF01277590. PMID 7710736. S2CID 23321953.
  8. ^ Page Module:Citation/CS1/styles.css has no content.Bessho T, Takashina K, Eguchi J, Komatsu T, Saito K (July 2008). "MKC-231, a choline-uptake enhancer: (1) long-lasting cognitive improvement after repeated administration in AF64A-treated rats". Journal of Neural Transmission. 115 (7): 1019–25. doi:10.1007/s00702-008-0053-4. PMID 18461272. S2CID 20201642.
  9. ^ a b Poisons Standard February 2020. comlaw.gov.au

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