Trace Amines
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Neurotransmitter Resource Guide
NEUROTRANSMITTER RESOURCE GUIDE Science + Insight doctorsdata.com Doctor’s Data, Inc. Neurotransmitter RESOURCE GUIDE Table of Contents Sample Report Sample Report ........................................................................................................................................................................... 1 Analyte Considerations Phenylethylamine (B-phenylethylamine or PEA) ................................................................................................. 1 Tyrosine .......................................................................................................................................................................................... 3 Tyramine ........................................................................................................................................................................................4 Dopamine .....................................................................................................................................................................................6 3, 4-Dihydroxyphenylacetic Acid (DOPAC) ............................................................................................................... 7 3-Methoxytyramine (3-MT) ............................................................................................................................................... 9 Norepinephrine ........................................................................................................................................................................ -
Emerging Evidence for a Central Epinephrine-Innervated A1- Adrenergic System That Regulates Behavioral Activation and Is Impaired in Depression
Neuropsychopharmacology (2003) 28, 1387–1399 & 2003 Nature Publishing Group All rights reserved 0893-133X/03 $25.00 www.neuropsychopharmacology.org Perspective Emerging Evidence for a Central Epinephrine-Innervated a1- Adrenergic System that Regulates Behavioral Activation and is Impaired in Depression ,1 1 1 1 1 Eric A Stone* , Yan Lin , Helen Rosengarten , H Kenneth Kramer and David Quartermain 1Departments of Psychiatry and Neurology, New York University School of Medicine, New York, NY, USA Currently, most basic and clinical research on depression is focused on either central serotonergic, noradrenergic, or dopaminergic neurotransmission as affected by various etiological and predisposing factors. Recent evidence suggests that there is another system that consists of a subset of brain a1B-adrenoceptors innervated primarily by brain epinephrine (EPI) that potentially modulates the above three monoamine systems in parallel and plays a critical role in depression. The present review covers the evidence for this system and includes findings that brain a -adrenoceptors are instrumental in behavioral activation, are located near the major monoamine cell groups 1 or target areas, receive EPI as their neurotransmitter, are impaired or inhibited in depressed patients or after stress in animal models, and a are restored by a number of antidepressants. This ‘EPI- 1 system’ may therefore represent a new target system for this disorder. Neuropsychopharmacology (2003) 28, 1387–1399, advance online publication, 18 June 2003; doi:10.1038/sj.npp.1300222 Keywords: a1-adrenoceptors; epinephrine; motor activity; depression; inactivity INTRODUCTION monoaminergic systems. This new system appears to be impaired during stress and depression and thus may Depressive illness is currently believed to result from represent a new target for this disorder. -
Neurotransmitters-Drugs Andbrain Function.Pdf
Neurotransmitters, Drugs and Brain Function. Edited by Roy Webster Copyright & 2001 John Wiley & Sons Ltd ISBN: Hardback 0-471-97819-1 Paperback 0-471-98586-4 Electronic 0-470-84657-7 Neurotransmitters, Drugs and Brain Function Neurotransmitters, Drugs and Brain Function. Edited by Roy Webster Copyright & 2001 John Wiley & Sons Ltd ISBN: Hardback 0-471-97819-1 Paperback 0-471-98586-4 Electronic 0-470-84657-7 Neurotransmitters, Drugs and Brain Function Edited by R. A. Webster Department of Pharmacology, University College London, UK JOHN WILEY & SONS, LTD Chichester Á New York Á Weinheim Á Brisbane Á Singapore Á Toronto Neurotransmitters, Drugs and Brain Function. Edited by Roy Webster Copyright & 2001 John Wiley & Sons Ltd ISBN: Hardback 0-471-97819-1 Paperback 0-471-98586-4 Electronic 0-470-84657-7 Copyright # 2001 by John Wiley & Sons Ltd. Bans Lane, Chichester, West Sussex PO19 1UD, UK National 01243 779777 International ++44) 1243 779777 e-mail +for orders and customer service enquiries): [email protected] Visit our Home Page on: http://www.wiley.co.uk or http://www.wiley.com All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except under the terms of the Copyright, Designs and Patents Act 1988 or under the terms of a licence issued by the Copyright Licensing Agency Ltd, 90 Tottenham Court Road, London W1P0LP,UK, without the permission in writing of the publisher. Other Wiley Editorial Oces John Wiley & Sons, Inc., 605 Third Avenue, New York, NY 10158-0012, USA WILEY-VCH Verlag GmbH, Pappelallee 3, D-69469 Weinheim, Germany John Wiley & Sons Australia, Ltd. -
2-Phenylethylamine and Methamphetamine Enhance the Spinal Monosynaptic Reflex by Releasing Noradrenaline from the Terminals of Descending Fibers
Japan. J. Pharmacol. 55, 359-366 (1991) 359 2-Phenylethylamine and Methamphetamine Enhance the Spinal Monosynaptic Reflex by Releasing Noradrenaline from the Terminals of Descending Fibers Hideki Ono, Hiroyuki Ito and Hideomi Fukuda' Departmentof Toxicologyand Pharmacology,Faculty of Pharmaceutical Sciences, TheUniversity of Tokyo,Hongo 7-3-1, Bunkyo-ku, Tokyo 113, Japan 'Departmentof Pharmacology, Collegeof Pharmacy,Nihon University, 7-7-1Narashinodai, Funabashi, Chiba 274, Japan ReceivedJuly 28, 1990 AcceptedDecember 27, 1990 ABSTRACT Experiments were performed on spinalized rats transected at C1. In travenous administration of 2-phenylethylamine-HC1 (PEA-HC1) (0.3 and 1 mg/kg, i.v.) and methamphetamine-HC1 (MAP-HC1) (0.1 and 0.3 mg/kg, i.v.) increased the amplitude of the monosynaptic reflex (MSR). The increase of the MSR caused by PEA and MAP was antagonized by prazosin-HC1 and abolished by the pretreatment with reserpine (i.p.) and 6-hydroxydopamine (intracisternally, 14 days previously). A dopamine D, antagonist, SK&F 83566-HBr (0.01 mg/kg, i.v. ), and a D2 antagonist, YM-09151-2 (0.3 mg/kg, i.v.), did not antagonize the increasing effects produced by PEA and MAP. An inhibitor of type-B monoamine oxidase, (-)deprenyl-HC1 (1 mg/kg, i.v.), prolonged the effect of PEA but not that of MAP, suggesting that PEA alone, and not its metabolites, enhanced the MSR. These results suggest that PEA and MAP increase the amplitude of the MSR by releasing noradrenaline from the ter minals of descending noradrenergic fibers, and that PEA, an endogenous trace amine, has a mechanism of action similar to that of MAP. -
The Roles Played by Highly Truncated Splice Variants of G Protein-Coupled Receptors Helen Wise
Wise Journal of Molecular Signaling 2012, 7:13 http://www.jmolecularsignaling.com/content/7/1/13 REVIEW Open Access The roles played by highly truncated splice variants of G protein-coupled receptors Helen Wise Abstract Alternative splicing of G protein-coupled receptor (GPCR) genes greatly increases the total number of receptor isoforms which may be expressed in a cell-dependent and time-dependent manner. This increased diversity of cell signaling options caused by the generation of splice variants is further enhanced by receptor dimerization. When alternative splicing generates highly truncated GPCRs with less than seven transmembrane (TM) domains, the predominant effect in vitro is that of a dominant-negative mutation associated with the retention of the wild-type receptor in the endoplasmic reticulum (ER). For constitutively active (agonist-independent) GPCRs, their attenuated expression on the cell surface, and consequent decreased basal activity due to the dominant-negative effect of truncated splice variants, has pathological consequences. Truncated splice variants may conversely offer protection from disease when expression of co-receptors for binding of infectious agents to cells is attenuated due to ER retention of the wild-type co-receptor. In this review, we will see that GPCRs retained in the ER can still be functionally active but also that highly truncated GPCRs may also be functionally active. Although rare, some truncated splice variants still bind ligand and activate cell signaling responses. More importantly, by forming heterodimers with full-length GPCRs, some truncated splice variants also provide opportunities to generate receptor complexes with unique pharmacological properties. So, instead of assuming that highly truncated GPCRs are associated with faulty transcription processes, it is time to reassess their potential benefit to the host organism. -
GABAB Receptors and Pain
King’s Research Portal DOI: 10.1016/j.neuropharm.2017.05.012 Document Version Peer reviewed version Link to publication record in King's Research Portal Citation for published version (APA): Malcangio, M. (2017). GABAB receptors and pain. Neuropharmacology. https://doi.org/10.1016/j.neuropharm.2017.05.012 Citing this paper Please note that where the full-text provided on King's Research Portal is the Author Accepted Manuscript or Post-Print version this may differ from the final Published version. If citing, it is advised that you check and use the publisher's definitive version for pagination, volume/issue, and date of publication details. And where the final published version is provided on the Research Portal, if citing you are again advised to check the publisher's website for any subsequent corrections. General rights Copyright and moral rights for the publications made accessible in the Research Portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognize and abide by the legal requirements associated with these rights. •Users may download and print one copy of any publication from the Research Portal for the purpose of private study or research. •You may not further distribute the material or use it for any profit-making activity or commercial gain •You may freely distribute the URL identifying the publication in the Research Portal Take down policy If you believe that this document breaches copyright please contact [email protected] providing details, and we will remove access to the work immediately and investigate your claim. -
Tyramine and Amyloid Beta 42: a Toxic Synergy
biomedicines Article Tyramine and Amyloid Beta 42: A Toxic Synergy Sudip Dhakal and Ian Macreadie * School of Science, RMIT University, Bundoora, VIC 3083, Australia; [email protected] * Correspondence: [email protected]; Tel.: +61-3-9925-6627 Received: 5 May 2020; Accepted: 27 May 2020; Published: 30 May 2020 Abstract: Implicated in various diseases including Parkinson’s disease, Huntington’s disease, migraines, schizophrenia and increased blood pressure, tyramine plays a crucial role as a neurotransmitter in the synaptic cleft by reducing serotonergic and dopaminergic signaling through a trace amine-associated receptor (TAAR1). There appear to be no studies investigating a connection of tyramine to Alzheimer’s disease. This study aimed to examine whether tyramine could be involved in AD pathology by using Saccharomyces cerevisiae expressing Aβ42. S. cerevisiae cells producing native Aβ42 were treated with different concentrations of tyramine, and the production of reactive oxygen species (ROS) was evaluated using flow cytometric cell analysis. There was dose-dependent ROS generation in wild-type yeast cells with tyramine. In yeast producing Aβ42, ROS levels generated were significantly higher than in controls, suggesting a synergistic toxicity of Aβ42 and tyramine. The addition of exogenous reduced glutathione (GSH) was found to rescue the cells with increased ROS, indicating depletion of intracellular GSH due to tyramine and Aβ42. Additionally, tyramine inhibited the respiratory growth of yeast cells producing GFP-Aβ42, while there was no growth inhibition when cells were producing GFP. Tyramine was also demonstrated to cause increased mitochondrial DNA damage, resulting in the formation of petite mutants that lack respiratory function. -
Functioning of the Dimeric GABAB Receptor Extracellular Domain Revealed by Glycan Wedge Scanning
Functioning of the dimeric GABAB receptor extracellular domain revealed by glycan wedge scanning Philippe Rondard1§, Siluo Huang2§, Carine Monnier1, Haijun Tu2, Bertrand Blanchard1, Nadia Oueslati1, Fanny Malhaire1, Ying Li2, Eric Trinquet3, Gilles Labesse4,5, Jean-Philippe Pin1 & Jianfeng Liu2 1 CNRS, UMR 5203, Institut de Génomique Fonctionnelle, Montpellier, France and INSERM, U661, Montpellier, France and Université Montpellier 1,2, Montpellier F-34000, France. 2, Sino-France Laboratory for Drug Screening, Key Laboratory of Molecular Biophysics of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, China 3 CisBio International, Parc technologique Marcel Boiteux, Bagnols/Cèze cedex F-30204, France 4, Centre de Biochimie Structurale, CNRS UMR5048, Université Montpellier 1, Montpellier F-34060, France 5 INSERM U414, Montpellier, F-34094 France § P.R. and S.H. contributed equally to this work Correspondence should be addressed to J.P.P ([email protected]) and J.L. ([email protected]). Running title : Functional analysis of GABAB receptor VFTs using N-glycans Total character count (including spaces) : 55,058 1 Abstract The G-protein coupled receptor activated by the neurotransmitter GABA is made up of two subunits, GABAB1 and GABAB2. While GABAB1 binds agonists, GABAB2 is required for trafficking GABAB1 to the cell surface, increasing agonist affinity to GABAB1, and activating associated G-proteins. These subunits each comprise two domains, a Venus flytrap (VFT) domain and a heptahelical (7TM) domain. How agonist binding to the GABAB1 VFT leads to GABAB2 7TM activation remains unknown. Here, we used a glycan wedge scanning approach to investigate how the GABAB VFT dimer controls receptor activity. -
Selegiline) in Monkeys*
Intravenous self-administration studies with /-deprenyl (selegiline) in monkeys* /-Deprenyl and its stereoisomer d-deprenyl did not maintain intravenous self-administration behavior in rhesus monkeys. In contrast, /-methamphetamine, the major metabolite of /-deprenyl, as well as the baseline drug, cocaine, maintained high rates of intravenous self-administration behavior. Treatment with /-deprenyl doses up to 1.0 mg/kg before self-administration sessions failed to alter self-administra- tion of either cocaine or /-methamphetamine. Thus /-deprenyl did not appear to have cocaine- or meth- amphetamine-like reinforcing properties in monkeys and was ineffective in altering established patterns of psychomotor-stimulant self-administration behavior. These results support clinical findings that de- spite long-term use of /-deprenyl for the treatment of Parkinson's disease by large numbers of patients, no instances of abuse have been documented. /-Deprenyl has recently been suggested as a potential med- ication for the treatment of various types of drug abuse, including cocaine abuse, but its failure to pro- duce selective effects in decreasing cocaine or methamphetamine self-administration behavior in the present experiments makes such an application seem unlikely. (CLIN PHARMACOL THER 1994;56:774-80.) Gail D. Winger, PhD,a Sevil Yasar, MD,b'd'e S. Steven Negus, PhD,a and Steven R. Goldberg, pIli/i d'e Ann Arbor, Mich., and Baltimore, Md. From the 'Department of Pharmacology, University of Michigan /-Deprenyl (selegiline) has been known for several -
Exploring the Heteromeric Interface of the 5-HT2A-Mglu2 Receptor Complex
Virginia Commonwealth University VCU Scholars Compass Theses and Dissertations Graduate School 2020 Exploring the Heteromeric Interface of the 5-HT2A-mGlu2 Receptor Complex Mohamed Aarif Abdul Kareem Virginia Commonwealth University Follow this and additional works at: https://scholarscompass.vcu.edu/etd Part of the Nervous System Diseases Commons, Other Psychiatry and Psychology Commons, Physiological Processes Commons, and the Translational Medical Research Commons © The Author Downloaded from https://scholarscompass.vcu.edu/etd/6235 This Thesis is brought to you for free and open access by the Graduate School at VCU Scholars Compass. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of VCU Scholars Compass. For more information, please contact [email protected]. Exploring the Heteromeric Interface of the 5-HT2A-mGlu2 Receptor Complex A Thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Physiology and Biophysics at Virginia Commonwealth University By: Mohamed Aarif Abdul Kareem B.A. Neurobiology, Boston University, 2018 Mentor: Javier González-Maeso Associate Professor Department of Physiology and Biophysics Virginia Commonwealth University Richmond, Virginia April 30, 2020 Acknowledgments: Thank you to my peers for their continued support of my dreams and aspirations. Thank you to my mentors for pushing and supporting me every step of the way. Thank you to Virginia Commonwealth University for providing opportunities which foster my passion for science and allow it to continue to flourish. Indeed, I owe much gratitude to my parents, Abdul & Jasmine Kareem, who have guided me in becoming a strong, independent student, and encourage me to take calculated risks and face challenges head on. -
G Protein-Coupled Receptors
S.P.H. Alexander et al. The Concise Guide to PHARMACOLOGY 2015/16: G protein-coupled receptors. British Journal of Pharmacology (2015) 172, 5744–5869 THE CONCISE GUIDE TO PHARMACOLOGY 2015/16: G protein-coupled receptors Stephen PH Alexander1, Anthony P Davenport2, Eamonn Kelly3, Neil Marrion3, John A Peters4, Helen E Benson5, Elena Faccenda5, Adam J Pawson5, Joanna L Sharman5, Christopher Southan5, Jamie A Davies5 and CGTP Collaborators 1School of Biomedical Sciences, University of Nottingham Medical School, Nottingham, NG7 2UH, UK, 2Clinical Pharmacology Unit, University of Cambridge, Cambridge, CB2 0QQ, UK, 3School of Physiology and Pharmacology, University of Bristol, Bristol, BS8 1TD, UK, 4Neuroscience Division, Medical Education Institute, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY, UK, 5Centre for Integrative Physiology, University of Edinburgh, Edinburgh, EH8 9XD, UK Abstract The Concise Guide to PHARMACOLOGY 2015/16 provides concise overviews of the key properties of over 1750 human drug targets with their pharmacology, plus links to an open access knowledgebase of drug targets and their ligands (www.guidetopharmacology.org), which provides more detailed views of target and ligand properties. The full contents can be found at http://onlinelibrary.wiley.com/doi/ 10.1111/bph.13348/full. G protein-coupled receptors are one of the eight major pharmacological targets into which the Guide is divided, with the others being: ligand-gated ion channels, voltage-gated ion channels, other ion channels, nuclear hormone receptors, catalytic receptors, enzymes and transporters. These are presented with nomenclature guidance and summary information on the best available pharmacological tools, alongside key references and suggestions for further reading. -
Multi-Functionality of Proteins Involved in GPCR and G Protein Signaling: Making Sense of Structure–Function Continuum with In
Cellular and Molecular Life Sciences (2019) 76:4461–4492 https://doi.org/10.1007/s00018-019-03276-1 Cellular andMolecular Life Sciences REVIEW Multi‑functionality of proteins involved in GPCR and G protein signaling: making sense of structure–function continuum with intrinsic disorder‑based proteoforms Alexander V. Fonin1 · April L. Darling2 · Irina M. Kuznetsova1 · Konstantin K. Turoverov1,3 · Vladimir N. Uversky2,4 Received: 5 August 2019 / Revised: 5 August 2019 / Accepted: 12 August 2019 / Published online: 19 August 2019 © Springer Nature Switzerland AG 2019 Abstract GPCR–G protein signaling system recognizes a multitude of extracellular ligands and triggers a variety of intracellular signal- ing cascades in response. In humans, this system includes more than 800 various GPCRs and a large set of heterotrimeric G proteins. Complexity of this system goes far beyond a multitude of pair-wise ligand–GPCR and GPCR–G protein interactions. In fact, one GPCR can recognize more than one extracellular signal and interact with more than one G protein. Furthermore, one ligand can activate more than one GPCR, and multiple GPCRs can couple to the same G protein. This defnes an intricate multifunctionality of this important signaling system. Here, we show that the multifunctionality of GPCR–G protein system represents an illustrative example of the protein structure–function continuum, where structures of the involved proteins represent a complex mosaic of diferently folded regions (foldons, non-foldons, unfoldons, semi-foldons, and inducible foldons). The functionality of resulting highly dynamic conformational ensembles is fne-tuned by various post-translational modifcations and alternative splicing, and such ensembles can undergo dramatic changes at interaction with their specifc partners.