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Chemical compound
Pharmaceutical compound
Pirenzepine (Gastrozepin ), an M1 selective antagonist, is used in the treatment of peptic ulcers , as it reduces gastric acid secretion and reduces muscle spasm . It is in a class of drugs known as muscarinic receptor antagonists ; acetylcholine is the neurotransmitter of the parasympathetic nervous system which initiates the rest-and-digest state (as opposed to fight-or-flight), resulting in an increase in gastric motility and digestion; whereas pirenzepine would inhibit these actions and cause decreased gastric motility leading to delayed gastric emptying and constipation.[ 1] blood–brain barrier .
Pirenzepine has been investigated for use in myopia control.[ 2] [ 3]
It promotes the homodimerization or oligomerisation of M1 receptors .[ 4]
^ Stolerman IP (2 August 2010). Encyclopedia of Psychopharmacology ISBN 978-3-540-68698-9 . Retrieved 26 June 2013 . ^ Czepita D (2005). "[Fundamentals of modern treatment of myopia]". Annales Academiae Medicae Stetinensis . 51 (2): 5–9. PMID 16519089 . ^ Walline JJ, Lindsley KB, Vedula SS, Cotter SA, Mutti DO, Ng SM, Twelker JD (January 2020). "Interventions to slow progression of myopia in children" . The Cochrane Database of Systematic Reviews . 1 (1): CD004916. doi :10.1002/14651858.CD004916.pub4 . PMC 6984636 PMID 31930781 . ^ Pediani JD, Ward RJ, Godin AG, Marsango S, Milligan G (June 2016). "Dynamic Regulation of Quaternary Organization of the M1 Muscarinic Receptor by Subtype-selective Antagonist Drugs" . The Journal of Biological Chemistry . 291 (25): 13132–13146. doi :10.1074/jbc.M115.712562 PMC 4933229 PMID 27080256 .
mAChRs Tooltip Muscarinic acetylcholine receptors
Agonists Antagonists
3-Quinuclidinyl benzilate 4-DAMP Aclidinium bromide (+formoterol )Abediterol AF-DX 250 AF-DX 384 Ambutonium bromide Anisodamine Anisodine Antihistamines (first-generation) (e.g., brompheniramine , buclizine , captodiame , chlorphenamine (chlorpheniramine) , cinnarizine , clemastine , cyproheptadine , dimenhydrinate , dimetindene , diphenhydramine , doxylamine , meclizine , mequitazine , perlapine , phenindamine , pheniramine , phenyltoloxamine , promethazine , propiomazine , triprolidine )AQ-RA 741 Atropine Atropine methonitrate Atypical antipsychotics (e.g., clozapine , fluperlapine , olanzapine (+fluoxetine ), rilapine , quetiapine , tenilapine , zotepine )Benactyzine Benzatropine (benztropine) Benzilone Benzilylcholine mustard Benzydamine Bevonium BIBN 99 Biperiden Bornaprine Camylofin CAR-226,086 CAR-301,060 CAR-302,196 CAR-302,282 CAR-302,368 CAR-302,537 CAR-302,668 Caramiphen Cimetropium bromide Clidinium bromide Cloperastine CS-27349 Cyclobenzaprine Cyclopentolate Darifenacin DAU-5884 Desfesoterodine Dexetimide DIBD Dicycloverine (dicyclomine) Dihexyverine Difemerine Diphemanil metilsulfate Ditran Drofenine EA-3167 EA-3443 EA-3580 EA-3834 Emepronium bromide Etanautine Etybenzatropine (ethybenztropine) Fenpiverinium Fentonium bromide Fesoterodine Flavoxate Glycopyrronium bromide (+beclometasone/formoterol , +indacaterol , +neostigmine )Hexahydrodifenidol Hexahydrosiladifenidol Hexbutinol Hexocyclium Himbacine HL-031,120 Homatropine Imidafenacin Ipratropium bromide (+salbutamol )Isopropamide J-104,129 Hyoscyamine Mamba toxin 3 Mamba toxin 7 Mazaticol Mebeverine Meladrazine Mepenzolate Methantheline Methoctramine Methylatropine Methylhomatropine Methylscopolamine Metixene Muscarinic toxin 7 N-Ethyl-3-piperidyl benzilate N-Methyl-3-piperidyl benzilate Nefopam Octatropine methylbromide (anisotropine methylbromide) Orphenadrine Otenzepad (AF-DX 116) Otilonium bromide Oxapium iodide Oxitropium bromide Oxybutynin Oxyphencyclimine Oxyphenonium bromide PBID PD-102,807 PD-0298029 Penthienate Pethidine pFHHSiD Phenglutarimide Phenyltoloxamine Pipenzolate bromide Piperidolate Pirenzepine Piroheptine Pizotifen Poldine Pridinol Prifinium bromide Procyclidine Profenamine (ethopropazine) Propantheline bromide Propiverine Quinidine 3-Quinuclidinyl thiochromane-4-carboxylate Revefenacin Rociverine RU-47,213 SCH-57,790 SCH-72,788 SCH-217,443 Scopolamine (hyoscine) Scopolamine butylbromide (hyoscine butylbromide) Silahexacyclium Sofpironium bromide Solifenacin SSRIs Tooltip Selective serotonin reuptake inhibitors (e.g., femoxetine , paroxetine )Telenzepine Terodiline Tetracyclic antidepressants (e.g., amoxapine , maprotiline , mianserin , mirtazapine )Tiemonium iodide Timepidium bromide Tiotropium bromide Tiquizium bromide Tofenacin Tolterodine Tricyclic antidepressants (e.g., amitriptyline (+perphenazine ), amitriptylinoxide , butriptyline , cidoxepin , clomipramine , desipramine , desmethyldesipramine , dibenzepin , dosulepin (dothiepin) , doxepin , imipramine , lofepramine , nitroxazepine , northiaden (desmethyldosulepin) , nortriptyline , protriptyline , quinupramine , trimipramine )Tridihexethyl Trihexyphenidyl Trimebutine Tripitamine (tripitramine) Tropacine Tropatepine Tropicamide Trospium chloride Typical antipsychotics (e.g., chlorpromazine , chlorprothixene , cyamemazine (cyamepromazine) , loxapine , mesoridazine , thioridazine )Umeclidinium bromide (+vilanterol )WIN-2299 Xanomeline Zamifenacin
Precursors (and prodrugs )
