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Abstract
This paper is the forty-second consecutive installment of the annual anthological review of research concerning the endogenous opioid system, summarizing articles published during 2019 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides and receptors as well as effects of opioid/opiate agonists and antagonists. The review is subdivided into the following specific topics: molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors (1), the roles of these opioid peptides and receptors in pain and analgesia in animals (2) and humans (3), opioid-sensitive and opioid-insensitive effects of nonopioid analgesics (4), opioid peptide and receptor involvement in tolerance and dependence (5), stress and social status (6), learning and memory (7), eating and drinking (8), drug abuse and alcohol (9), sexual activity and hormones, pregnancy, development and endocrinology (10), mental illness and mood (11), seizures and neurologic disorders (12), electrical-related activity and neurophysiology (13), general activity and locomotion (14), gastrointestinal, renal and hepatic functions (15), cardiovascular responses (16), respiration and thermoregulation (17), and immunological responses (18).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, 65-30 Kissena Blvd., Flushing, NY, 11367, United States.
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2
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Gross JD, Kaski SW, Schmidt KT, Cogan ES, Boyt KM, Wix K, Schroer AB, McElligott ZA, Siderovski DP, Setola V. Role of RGS12 in the differential regulation of kappa opioid receptor-dependent signaling and behavior. Neuropsychopharmacology 2019; 44:1728-1741. [PMID: 31141817 PMCID: PMC6785087 DOI: 10.1038/s41386-019-0423-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 05/14/2019] [Accepted: 05/17/2019] [Indexed: 12/23/2022]
Abstract
Kappa opioid receptor (KOR) agonists show promise in ameliorating disorders, such as addiction and chronic pain, but are limited by dysphoric and aversive side effects. Clinically beneficial effects of KOR agonists (e.g., analgesia) are predominantly mediated by heterotrimeric G protein signaling, whereas β-arrestin signaling is considered central to their detrimental side effects (e.g., dysphoria/aversion). Here we show that Regulator of G protein Signaling-12 (RGS12), via independent signaling mechanisms, simultaneously attenuates G protein signaling and augments β-arrestin signaling downstream of KOR, exhibiting considerable selectivity in its actions for KOR over other opioid receptors. We previously reported that RGS12-null mice exhibit increased dopamine transporter-mediated dopamine (DA) uptake in the ventral (vSTR), but not dorsal striatum (dSTR), as well as reduced psychostimulant-induced hyperlocomotion; in the current study, we found that these phenotypes are reversed following KOR antagonism. Fast-scan cyclic voltammetry studies of dopamine (DA) release and reuptake suggest that striatal disruptions to KOR-dependent DAergic neurotransmission in RGS12-null mice are restricted to the nucleus accumbens. In both ventral striatal tissue and transfected cells, RGS12 and KOR are seen to interact within a protein complex. Ventral striatal-specific increases in KOR levels and KOR-induced G protein activation are seen in RGS12-null mice, as well as enhanced sensitivity to KOR agonist-induced hypolocomotion and analgesia-G protein signaling-dependent behaviors; a ventral striatal-specific increase in KOR levels was also observed in β-arrestin-2-deficient mice, highlighting the importance of β-arrestin signaling to establishing steady-state KOR levels in this particular brain region. Conversely, RGS12-null mice exhibited attenuated KOR-induced conditioned place aversion (considered a β-arrestin signaling-dependent behavior), consistent with the augmented KOR-mediated β-arrestin signaling seen upon RGS12 over-expression. Collectively, our findings highlight a role for RGS12 as a novel, differential regulator of both G protein-dependent and -independent signaling downstream of KOR activation.
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MESH Headings
- 3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer/pharmacology
- Animals
- Avoidance Learning/drug effects
- Behavior, Animal/drug effects
- Dopamine/metabolism
- Enkephalin, Ala(2)-MePhe(4)-Gly(5)-/pharmacology
- Enkephalin, Leucine-2-Alanine/pharmacology
- Female
- Locomotion/drug effects
- Male
- Mice
- Mice, Knockout
- Nucleus Accumbens/drug effects
- Nucleus Accumbens/metabolism
- RGS Proteins/genetics
- Receptors, Opioid, kappa/agonists
- Receptors, Opioid, kappa/metabolism
- Signal Transduction
- Synaptic Transmission/drug effects
- Ventral Striatum/drug effects
- Ventral Striatum/metabolism
- beta-Arrestins/metabolism
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Affiliation(s)
- Joshua D Gross
- Department of Physiology & Pharmacology, 3048 HSN, West Virginia University Health Sciences Center, 64 Medical Center Drive, Morgantown, WV, 26508, USA
- Department of Neuroscience, West Virginia University, Morgantown, WV, 26506-9229, USA
- Department of Behavioral Medicine & Psychiatry, West Virginia University, Morgantown, WV, 26506-9229, USA
| | - Shane W Kaski
- Department of Physiology & Pharmacology, 3048 HSN, West Virginia University Health Sciences Center, 64 Medical Center Drive, Morgantown, WV, 26508, USA
- Department of Neuroscience, West Virginia University, Morgantown, WV, 26506-9229, USA
- Department of Behavioral Medicine & Psychiatry, West Virginia University, Morgantown, WV, 26506-9229, USA
| | - Karl T Schmidt
- Bowles Center for Alcohol Studies and Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Elizabeth S Cogan
- Bowles Center for Alcohol Studies and Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Kristen M Boyt
- Bowles Center for Alcohol Studies and Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Kim Wix
- Department of Physiology & Pharmacology, 3048 HSN, West Virginia University Health Sciences Center, 64 Medical Center Drive, Morgantown, WV, 26508, USA
| | - Adam B Schroer
- Department of Physiology & Pharmacology, 3048 HSN, West Virginia University Health Sciences Center, 64 Medical Center Drive, Morgantown, WV, 26508, USA
| | - Zoe A McElligott
- Bowles Center for Alcohol Studies and Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - David P Siderovski
- Department of Physiology & Pharmacology, 3048 HSN, West Virginia University Health Sciences Center, 64 Medical Center Drive, Morgantown, WV, 26508, USA.
- Department of Neuroscience, West Virginia University, Morgantown, WV, 26506-9229, USA.
| | - Vincent Setola
- Department of Physiology & Pharmacology, 3048 HSN, West Virginia University Health Sciences Center, 64 Medical Center Drive, Morgantown, WV, 26508, USA
- Department of Neuroscience, West Virginia University, Morgantown, WV, 26506-9229, USA
- Department of Behavioral Medicine & Psychiatry, West Virginia University, Morgantown, WV, 26506-9229, USA
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Purnell PR, Addicks BL, Zalzal HG, Shapiro S, Wen S, Ramadan HH, Setola V, Siderovski DP. Single Nucleotide Polymorphisms in Chemosensory Pathway Genes GNB3, TAS2R19, and TAS2R38 Are Associated with Chronic Rhinosinusitis. Int Arch Allergy Immunol 2019; 180:72-78. [PMID: 31137020 DOI: 10.1159/000499875] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 03/22/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Chronic rhinosinusitis (CRS) is a multifaceted disease with a significant genetic component. The importance of taste receptor signaling has recently been highlighted in CRS; single nucleotide polymorphisms (SNPs) of bitter tastant-responsive G-protein-coupled receptors have been linked with CRS and with altered innate immune responses to multiple bacterially derived signals. OBJECTIVE To determine in CRS the frequency of six SNPs in genes with known bitter tastant signaling function. METHODS Genomic DNA was isolated from 74 CRS volunteers in West Virginia, and allele frequency was determined and compared with demographically matched data from the 1,000 Genomes database. RESULTS For two SNPs in a gene recently associated with bitterant signaling regulation, RGS21, there were no associations with CRS (although the frequency of the minor allele of RGS21, rs7528947, was seen to increase with increasing Lund-Mackay CT staging score). Two TAS2R bitter taste receptor gene variants (TAS2R19 rs10772420 and TAS2R38 rs713598), identified in prior CRS genetics studies, were found to have similar associations in this study. CONCLUSION Unique to our study is the establishment of an association between CRS in this patient population and GNB3 SNP rs5443, a variation in an established G protein component downstream of bitterant receptor signal transduction.
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Affiliation(s)
- Phillip R Purnell
- Department of Otolaryngology, Head and Neck Surgery, West Virginia University School of Medicine, Morgantown, West Virginia, USA
| | - Benjamin L Addicks
- Department of Otolaryngology, Head and Neck Surgery, West Virginia University School of Medicine, Morgantown, West Virginia, USA
| | - Habib G Zalzal
- Department of Otolaryngology, Head and Neck Surgery, West Virginia University School of Medicine, Morgantown, West Virginia, USA
| | - Scott Shapiro
- Department of Otolaryngology, Head and Neck Surgery, West Virginia University School of Medicine, Morgantown, West Virginia, USA
| | - Sijin Wen
- Department of Biostatistics, West Virginia University School of Public Health, Morgantown, West Virginia, USA
| | - Hassan H Ramadan
- Department of Otolaryngology, Head and Neck Surgery, West Virginia University School of Medicine, Morgantown, West Virginia, USA
| | - Vincent Setola
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, West Virginia, USA.,Department of Neuroscience, West Virginia University School of Medicine, Morgantown, West Virginia, USA.,Department of Behavioral Medicine and Psychiatry, West Virginia University School of Medicine, Morgantown, West Virginia, USA
| | - David P Siderovski
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, West Virginia, USA,
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