词条 | Lofepramine | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
释义 |
| Verifiedfields = changed | verifiedrevid = 462093258 | IUPAC_name = N-(4-chlorobenzoylmethyl)-3-(10,11-dihydro-5H-dibenzo[b,f]azepin-5-yl)-N-methylpropan-1-amine | image = Lofepramin.svg | width = 250px | image2 = Lofepramine-from-xtal-1987-ball-and-stick.png | width2 = 250px | tradename = Gamanil, Lomont, Tymelyt, others | Drugs.com = {{drugs.com|international|lofepramine}} | pregnancy_category = | legal_UK = POM | routes_of_administration = Oral | bioavailability = 7%[1] | protein_bound = 99%[2] | metabolism = Hepatic (via cytochrome P450, including CYP2D6)[3] | metabolites = Desipramine (major) | elimination_half-life = Up to 5 hours;[4] 12–24 hours (active metabolites) | excretion = Urine, feces (mostly as metabolites) | IUPHAR_ligand = 7551 | CAS_number_Ref = {{cascite|changed|??}} | CAS_number = 23047-25-8 | CAS_supplemental = 26786-32-3 (hydrochloride) | ATC_prefix = N06 | ATC_suffix = AA07 | PubChem = 3947 | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 3810 | UNII_Ref = {{fdacite|correct|FDA}} | UNII = OCA4JT7PAW | KEGG_Ref = {{keggcite|correct|kegg}} | KEGG = D08140 | ChEBI_Ref = {{ebicite|correct|EBI}} | ChEBI = 47782 | ChEMBL_Ref = {{ebicite|correct|EBI}} | ChEMBL = 87708 | synonyms = Lopramine; DB-2182; Leo-460; WHR-2908A[4][6][7][8] | C=26 | H=27 | Cl=1 | N=2 | O=1 | molecular_weight = 418.958 g/mol | SMILES = Clc1ccc(cc1)C(=O)CN(C)CCCN4c2ccccc2CCc3c4cccc3 | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = 1S/C26H27ClN2O/c1-28(19-26(30)22-13-15-23(27)16-14-22)17-6-18-29-24-9-4-2-7-20(24)11-12-21-8-3-5-10-25(21)29/h2-5,7-10,13-16H,6,11-12,17-19H2,1H3 | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = SAPNXPWPAUFAJU-UHFFFAOYSA-N }}Lofepramine, sold under the brand names Gamanil, Lomont, and Tymelyt among others, is a tricyclic antidepressant (TCA) which is used to treat depression.[3][3][4] The TCAs are so named as they share the common property of having three rings in their chemical structure. Like most TCAs lofepramine is believed to work in relieving depression by increasing concentrations of the neurotransmitters norepinephrine and serotonin in the synapse, by inhibiting their reuptake.[3] It is usually considered a third-generation TCA, as unlike the first- and second-generation TCAs it is relatively safe in overdose and has milder and less frequent side effects.[5] Lofepramine is not available in the United States, Canada, Australia or New Zealand, although it is available in Ireland, Japan, South Africa and the United Kingdom, among other countries.[6] Medical usesIn the United Kingdom, lofepramine is licensed for the treatment of depression which is its primary use in medicine.[2][7] ContraindicationsTo be used with caution, or not at all, for people with the following conditions:[3]
And in those being treated with amiodarone or terfenadine.[3] Pregnancy and lactationLofepramine use during pregnancy is advised against unless the benefits clearly outweigh the risks.[3] This is because its safety during pregnancy has not been established and animal studies have shown some potential for harm if used during pregnancy.[3] If used during the third trimester of pregnancy it can cause insufficient breathing to meet oxygen requirements, agitation and withdrawal symptoms in the infant.[3] Likewise its use by breastfeeding women is advised against, except when the benefits clearly outweigh the risks, due to the fact it is excreted in the breast milk and may therefore adversely affect the infant.[3] Although the amount secreted in breast milk is likely too small to be harmful.[24] Side effectsThe most common adverse effects (occurring in at least 1% of those taking the drug) include agitation, anxiety, confusion, dizziness, irritability, abnormal sensations, like pins and needles, without a physical cause, sleep disturbances (e.g. sleeplessness) and a drop in blood pressure upon standing up.[9] Less frequent side effects include movement disorders (like tremors), precipitation of angle closure glaucoma and the potentially fatal side effects paralytic ileus and neuroleptic malignant syndrome.[9] Side effects with unknown frequency include (but are not limited to):[9]
WithdrawalIf abruptly stopped after regular use it can cause withdrawal effects such as sleeplessness, irritability and excessive sweating.[3] Overdose{{Main|Tricyclic antidepressant overdose}}Compared to other TCAs, lofepramine is considered to be less toxic in overdose.[9] Its treatment is mostly a matter of trying to reduce absorption of the drug, if possible, using gastric lavage and monitoring for adverse effects on the heart.[3] InteractionsLofepramine is known to interact with:[9][3]
PharmacologyPharmacodynamics{{See also|Pharmacology of antidepressants|Tricyclic antidepressant#Binding profiles}}
Lofepramine is a strong inhibitor of norepinephrine reuptake and a moderate inhibitor of serotonin reuptake.[10] It is a weak-intermediate level antagonist of the muscarinic acetylcholine receptors.[10] Lofepramine has been said to be a prodrug of desipramine,[25] although there is also evidence against this notion.[4] PharmacokineticsLofepramine is extensively metabolized, via cleavage of the p-chlorophenacyl group, to the TCA, desipramine, in humans.[26][4][6] However, it is unlikely this property plays a substantial role in its overall effects as lofepramine exhibits lower toxicity and anticholinergic side effects relative to desipramine while retaining equivalent antidepressant efficacy.[4] The p-chlorophenacyl group is metabolized to p-chlorobenzoic acid which is then conjugated with glycine and excreted in the urine.[26] The desipramine metabolite is partly secreted in the faeces.[26] Other routes of metabolism include hydroxylation, glucuronidation, N-dealkylation and N-oxidation.[26][6] ChemistryLofepramine is a tricyclic compound, specifically a dibenzazepine, and possesses three rings fused together with a side chain attached in its chemical structure.[27] Other dibenzazepine TCAs include imipramine, desipramine, clomipramine, and trimipramine.[27][28] Lofepramine is a tertiary amine TCA, with its side chain-demethylated metabolite desipramine being a secondary amine.[29][25] Unlike other tertiary amine TCAs, lofepramine has a bulky 4-chlorobenzoylmethyl substituent on its amine instead of a methyl group.[28] Although lofepramine is technically a tertiary amine, it acts in large part as a prodrug of desipramine, and is more similar to secondary amine TCAs in its effects.[92] Other secondary amine TCAs besides desipramine include nortriptyline and protriptyline.[30][31] The chemical name of lofepramine is N-(4-chlorobenzoylmethyl)-3-(10,11-dihydro-5H-dibenzo[b,f]azepin-5-yl)-N-methylpropan-1-amine and its free base form has a chemical formula of C26H27ClN2O with a molecular weight of 418.958 g/mol.[6] The drug is used commercially mostly as the hydrochloride salt; the free base form is not used.[6][3] The CAS Registry Number of the free base is 23047-25-8 and of the hydrochloride is 26786-32-3.[6][3] HistoryLofepramine was developed by Leo Läkemedel AB.[32] It first appeared in the literature in 1969 and was patented in 1970.[32] The drug was first introduced for the treatment of depression in either 1980 or 1983.[32][33] Society and cultureGeneric namesLofepramine is the generic name of the drug and its {{abbrlink|INN|International Nonproprietary Name}} and {{abbrlink|BAN|British Approved Name}}, while lofepramine hydrochloride is its {{abbrlink|USAN|United States Adopted Name}}, {{abbrlink|BANM|British Approved Name}}, and {{abbrlink|JAN|Japanese Accepted Name}}.[34][3][35][36] Its generic name in French and its {{abbrlink|DCF|Dénomination Commune Française}} are lofépramine, in Spanish and Italian and its {{abbrlink|DCIT|Denominazione Comune Italiana}} are lofepramina, in German is lofepramin, and in Latin is lofepraminum.[3][36]Brand namesBrand names of lofepramine include Amplit, Deftan, Deprimil, Emdalen, Gamanil, Gamonil, Lomont, Tymelet, and Tymelyt.[6][34][3][36] AvailabilityIn the United Kingdom, lofepramine is marketed (as the hydrochloride salt) in the form of 70 mg tablets [8] and 70 mg/5 mL oral suspension.[37] ResearchFatigueA formulation containing lofepramine and the amino acid phenylalanine is under investigation as a treatment for fatigue as of 2015.[38] References1. ^{{cite journal|title=Lofepramine: a review of its pharmacodynamic and pharmacokinetic properties, and therapeutic efficacy in depressive illness|date=February 1989|volume=37|issue=2|pages=123–140|pmid=2649353|doi=10.2165/00003495-198937020-00003|author1=Lancaster, SG |author2=Gonzalez, JP |journal=Drugs}} {{Antidepressants}}{{Navboxes2. ^1 {{cite web|title=Lofepramine 70mg tablets - Summary of Product Characteristics (SPC)|work=electronic Medicines Compendium|publisher=Merck Serono|date=18 November 2010|accessdate=21 November 2013|url=http://www.medicines.org.uk/emc/medicine/20961/SPC/Lofepramine+70mg+tablets/}} 3. ^1 2 3 4 5 6 {{cite book|title=Index Nominum 2000: International Drug Directory|url=https://books.google.com/books?id=5GpcTQD_L2oC&pg=PA614|year=2000|publisher=Taylor & Francis|isbn=978-3-88763-075-1|pages=614–}} 4. ^1 2 3 {{cite journal | author = Leonard BE | title = A comparison of the pharmacological properties of the novel tricyclic antidepressant lofepramine with its major metabolite, desipramine: a review | journal = International Clinical Psychopharmacology | volume = 2 | issue = 4 | pages = 281–97 |date=October 1987 | pmid = 2891742 | doi = 10.1097/00004850-198710000-00001| url = }} 5. ^{{cite web|url=http://www.safcglobal.com/safc-pharma/en-us/home/small-molecule-api/services-overview/generic-products/lofepramine-hydrochloride.html |title=SAFC Commercial Life Science Products & Services | Sigma-Aldrich |publisher=Safcglobal.com |date=2015-05-12 |accessdate=2016-02-24}} 6. ^1 2 3 4 5 {{cite web|title=Lofepramine Hydrochloride: Martindale: The Complete Drug Reference|url=https://www.medicinescomplete.com/mc/martindale/current/2522-w.htm|website=MedicinesComplete|publisher=The Pharmaceutical Press|accessdate=3 August 2017|language=en}} 7. ^{{cite book | isbn = 978-0-85711-084-8 | title = British National Formulary (BNF) | last1 = Joint Formulary Committee | year = 2013 | publisher = Pharmaceutical Press | location = London, UK | edition = 65 | pages = }} 8. ^1 {{cite web|title=Lofepramine 70mg Tablets|url=http://www.medicines.org.uk/emc/medicine/27917/spc}} 9. ^1 2 3 4 5 {{cite book|editor1-last=Joint Formulary Committee|title=BNF 73 (British National Formulary) March 2017|date=2017|publisher=Pharmaceutical Press|location=London, UK|isbn=978-0857112767|pages=354–355}} 10. ^1 2 3 4 {{cite web | title = PDSP Ki Database | work = Psychoactive Drug Screening Program (PDSP) | author1 = Roth, BL | author2 = Driscol, J | publisher = University of North Carolina at Chapel Hill and the United States National Institute of Mental Health | accessdate = 14 August 2017 | url = https://kidbdev.med.unc.edu/databases/pdsp.php?knowID=0&kiKey=&receptorDD=&receptor=&speciesDD=&species=&sourcesDD=&source=&hotLigandDD=&hotLigand=&testLigandDD=&testFreeRadio=testFreeRadio&testLigand=lofepramine&referenceDD=&reference=&KiGreater=&KiLess=&kiAllRadio=all&doQuery=Submit+Query}} 11. ^1 2 {{cite journal | vauthors = Tatsumi M, Groshan K, Blakely RD, Richelson E | title = Pharmacological profile of antidepressants and related compounds at human monoamine transporters | journal = Eur. 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Anthony|title=Pharmacology Secrets|url=https://books.google.com/books?id=_QQsj3PAUrEC&pg=PA39|year=2002|publisher=Elsevier Health Sciences|isbn=1-56053-470-2|pages=39–}} 31. ^1 {{cite book|author1=Philip Cowen|author2=Paul Harrison|author3=Tom Burns|title=Shorter Oxford Textbook of Psychiatry|url=https://books.google.com/books?id=Y1DtSGq-LnoC&pg=PA532|date=9 August 2012|publisher=OUP Oxford|isbn=978-0-19-162675-3|pages=532–}} 32. ^1 2 {{cite journal | vauthors = Andersen J, Kristensen AS, Bang-Andersen B, Strømgaard K | title = Recent advances in the understanding of the interaction of antidepressant drugs with serotonin and norepinephrine transporters | journal = Chem. Commun. | volume = | issue = 25 | pages = 3677–92 | year = 2009 | pmid = 19557250 | doi = 10.1039/b903035m | url = }} 33. ^{{cite book|author=Richard C. Dart|title=Medical Toxicology|url=https://books.google.com/books?id=BfdighlyGiwC&pg=PA836|year=2004|publisher=Lippincott Williams & Wilkins|isbn=978-0-7817-2845-4|pages=836–}} 34. ^1 2 3 4 5 {{cite book|author=J. Elks|title=The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies|url=https://books.google.com/books?id=0vXTBwAAQBAJ&pg=PA738|date=14 November 2014|publisher=Springer|isbn=978-1-4757-2085-3|pages=738–}} 35. ^{{cite book|author1=I.K. Morton|author2=Judith M. Hall|title=Concise Dictionary of Pharmacological Agents: Properties and Synonyms|url=https://books.google.com/books?id=tsjrCAAAQBAJ&pg=PA168|date=6 December 2012|publisher=Springer Science & Business Media|isbn=978-94-011-4439-1|pages=168–}} 36. ^1 2 3 https://www.drugs.com/international/lofepramine.html 37. ^{{cite web|title=Lofepramine Rosemont 70mg/5ml Oral Suspension - Summary of Product Characteristics (SPC) - (eMC)|url=http://www.medicines.org.uk/emc/medicine/10656|date=26 January 2016|accessdate=3 August 2017}} 38. ^{{cite web|title=Lofepramine/phenylalanine - MultiCell Technologies - AdisInsight|url=http://adisinsight.springer.com/drugs/800022855|website=AdisInsight|publisher=Springer International Publishing AG|accessdate=3 August 2017|language=en}} | title = Pharmacodynamics | titlestyle = background:#ccccff | list1 ={{Adrenergic receptor modulators}}{{Histamine receptor modulators}}{{Monoamine reuptake inhibitors}}{{Muscarinic acetylcholine receptor modulators}}{{Serotonin receptor modulators}} }}{{Tricyclics}} 11 : Alpha-1 blockers|Amines|Antihistamines|Chloroarenes|Dibenzazepines|Ketones|Muscarinic antagonists|Norepinephrine reuptake inhibitors|Prodrugs|Serotonin antagonists|Tricyclic antidepressants |
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