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Matt SM, Nolan R, Manikandan S, Agarwal Y, Channer B, Oteju O, Daniali M, Canagarajah JA, LuPone T, Mompho K, Runner K, Nickoloff-Bybel E, Li B, Niu M, Schlachetzki JCM, Fox HS, Gaskill PJ. Dopamine-driven Increase in IL-1β in Myeloid Cells is Mediated by Differential Dopamine Receptor Expression and Exacerbated by HIV. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.09.598137. [PMID: 38915663 PMCID: PMC11195146 DOI: 10.1101/2024.06.09.598137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
The catecholamine neurotransmitter dopamine is classically known for regulation of central nervous system (CNS) functions such as reward, movement, and cognition. Increasing evidence also indicates that dopamine regulates critical functions in peripheral organs and is an important immunoregulatory factor. We have previously shown that dopamine increases NF-κB activity, inflammasome activation, and the production of inflammatory cytokines such as IL-1β in human macrophages. As myeloid lineage cells are central to the initiation and resolution of acute inflammatory responses, dopamine-mediated dysregulation of these functions could both impair the innate immune response and exacerbate chronic inflammation. However, the exact pathways by which dopamine drives myeloid inflammation are not well defined, and studies in both rodent and human systems indicate that dopamine can impact the production of inflammatory mediators through both D1-like dopamine receptors (DRD1, DRD5) and D2-like dopamine receptors (DRD2, DRD3, and DRD4). Therefore, we hypothesized that dopamine-mediated production of IL-1β in myeloid cells is regulated by the ratio of different dopamine receptors that are activated. Our data in primary human monocyte-derived macrophages (hMDM) indicate that DRD1 expression is necessary for dopamine-mediated increases in IL-1β, and that changes in the expression of DRD2 and other dopamine receptors can alter the magnitude of the dopamine-mediated increase in IL-1β. Mature hMDM have a high D1-like to D2-like receptor ratio, which is different relative to monocytes and peripheral blood mononuclear cells (PBMCs). We further confirm in human microglia cell lines that a high ratio of D1-like to D2-like receptors promotes dopamine-induced increases in IL-1β gene and protein expression using pharmacological inhibition or overexpression of dopamine receptors. RNA-sequencing of dopamine-treated microglia shows that genes encoding functions in IL-1β signaling pathways, microglia activation, and neurotransmission increased with dopamine treatment. Finally, using HIV as an example of a chronic inflammatory disease that is substantively worsened by comorbid substance use disorders (SUDs) that impact dopaminergic signaling, we show increased effects of dopamine on inflammasome activation and IL-1β in the presence of HIV in both human macrophages and microglia. These data suggest that use of addictive substances and dopamine-modulating therapeutics could dysregulate the innate inflammatory response and exacerbate chronic neuroimmunological conditions like HIV. Thus, a detailed understanding of dopamine-mediated changes in inflammation, in particular pathways regulating IL-1β, will be critical to effectively tailor medication regimens.
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Schamiloglu S, Lewis E, Keeshen CM, Hergarden AC, Bender KJ, Whistler JL. Arrestin-3 Agonism at Dopamine D 3 Receptors Defines a Subclass of Second-Generation Antipsychotics That Promotes Drug Tolerance. Biol Psychiatry 2023; 94:531-542. [PMID: 36931452 PMCID: PMC10914650 DOI: 10.1016/j.biopsych.2023.03.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 02/09/2023] [Accepted: 03/02/2023] [Indexed: 03/19/2023]
Abstract
BACKGROUND Second-generation antipsychotics (SGAs) are frontline treatments for serious mental illness. Often, individual patients benefit only from some SGAs and not others. The mechanisms underlying this unpredictability in treatment efficacy remain unclear. All SGAs bind the dopamine D3 receptor (D3R) and are traditionally considered antagonists for dopamine receptor signaling. METHODS Here, we used a combination of two-photon calcium imaging, in vitro signaling assays, and mouse behavior to assess signaling by SGAs at D3R. RESULTS We report that some clinically important SGAs function as arrestin-3 agonists at D3R, resulting in modulation of calcium channels localized to the site of action potential initiation in prefrontal cortex pyramidal neurons. We further show that chronic treatment with an arrestin-3 agonist SGA, but not an antagonist SGA, abolishes D3R function through postendocytic receptor degradation by GASP1 (G protein-coupled receptor-associated sorting protein-1). CONCLUSIONS These results implicate D3R-arrestin-3 signaling as a source of SGA variability, highlighting the importance of including arrestin-3 signaling in characterizations of drug action. Furthermore, they suggest that postendocytic receptor trafficking that occurs during chronic SGA treatment may contribute to treatment efficacy.
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Affiliation(s)
- Selin Schamiloglu
- Neuroscience Graduate Program, University of California San Francisco, San Francisco, California
| | - Elinor Lewis
- Neuroscience Graduate Group, University of California Davis, Davis, California; Center for Neuroscience, University of California Davis, Davis, California
| | - Caroline M Keeshen
- Neuroscience Graduate Group, University of California Davis, Davis, California; Center for Neuroscience, University of California Davis, Davis, California
| | - Anne C Hergarden
- Center for Neuroscience, University of California Davis, Davis, California
| | - Kevin J Bender
- Neuroscience Graduate Program, University of California San Francisco, San Francisco, California; Department of Neurology, Kavli Institute for Fundamental Neuroscience, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, California.
| | - Jennifer L Whistler
- Center for Neuroscience, University of California Davis, Davis, California; Department of Physiology and Membrane Biology, University of California Davis School of Medicine, Davis, California.
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Zeder-Lutz G, Bornert O, Fellmann-Clauss R, Knittel-Obrecht A, Tranchant T, Bouteben S, Kaeffer J, Quillet R, Villa P, Wagner R, Lecat S, Simonin F. Characterization of anti-GASP motif antibodies that inhibit the interaction between GPRASP1 and G protein-coupled receptors. Anal Biochem 2023; 665:115062. [PMID: 36731712 DOI: 10.1016/j.ab.2023.115062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 01/17/2023] [Accepted: 01/24/2023] [Indexed: 02/03/2023]
Abstract
G protein-coupled receptor associated sorting protein 1 (GPRASP1) belongs to a family of 10 proteins that display sequence homologies in their C-terminal region. Several members including GPRASP1 also display a short repeated sequence called the GASP motif that is critically involved in protein-protein interactions with G protein-coupled receptors (GPCRs). Here, we characterized anti-GASP motif antibodies and investigated their potential inhibitory functions. We first showed that our in-house anti-GPRASP1 rabbit polyclonal serum contains anti-GASP motif antibodies and purified them by affinity chromatography. We further showed that these antibodies can detect GPRASP1 and GPRASP2 in Western blot, immunoprecipitation and immunofluorescence experiments while a mutant of GPRASP2, in which the most conserved hydrophobic core of the GASP motifs is mutated, was no more detected. Further characterization of anti-GASP motif antibodies by ELISA and Surface Plasmon Resonance assays suggests that GASP motifs function as multivalent epitopes. Finally, we set-up an Amplified Luminescent Proximity Homogeneous AlphaScreen® assay to detect the interaction between purified ADRB2 receptor and the central domain of GPRASP1 and showed that anti-GASP motif antibodies efficiently inhibit this interaction. Altogether, our results suggest that anti-GASP motif antibodies could represent a valuable tool to neutralize the interaction of GPRASP1 and GPRASP2 with different GPCRs.
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Affiliation(s)
- Gabrielle Zeder-Lutz
- Biotechnology and Cell Signaling, UMR7242 CNRS, University of Strasbourg, Illkirch-Graffenstaden, France
| | - Olivier Bornert
- Biotechnology and Cell Signaling, UMR7242 CNRS, University of Strasbourg, Illkirch-Graffenstaden, France
| | - Rosine Fellmann-Clauss
- Biotechnology and Cell Signaling, UMR7242 CNRS, University of Strasbourg, Illkirch-Graffenstaden, France
| | - Adeline Knittel-Obrecht
- Plateforme de Chimie Biologique integrative de Strasbourg, UAR3286, CNRS, University of Strasbourg, Illkirch-Graffenstaden, France
| | - Thibaud Tranchant
- Biotechnology and Cell Signaling, UMR7242 CNRS, University of Strasbourg, Illkirch-Graffenstaden, France
| | - Sarah Bouteben
- Biotechnology and Cell Signaling, UMR7242 CNRS, University of Strasbourg, Illkirch-Graffenstaden, France; Biotechnology and Cell Signaling, IMPReSs facility for Integral Membrane Proteins Research and Services, UMR7242 CNRS, University of Strasbourg, Illkirch-Graffenstaden, France
| | - Juliette Kaeffer
- Biotechnology and Cell Signaling, UMR7242 CNRS, University of Strasbourg, Illkirch-Graffenstaden, France
| | - Raphaëlle Quillet
- Biotechnology and Cell Signaling, UMR7242 CNRS, University of Strasbourg, Illkirch-Graffenstaden, France
| | - Pascal Villa
- Plateforme de Chimie Biologique integrative de Strasbourg, UAR3286, CNRS, University of Strasbourg, Illkirch-Graffenstaden, France
| | - Renaud Wagner
- Biotechnology and Cell Signaling, UMR7242 CNRS, University of Strasbourg, Illkirch-Graffenstaden, France; Biotechnology and Cell Signaling, IMPReSs facility for Integral Membrane Proteins Research and Services, UMR7242 CNRS, University of Strasbourg, Illkirch-Graffenstaden, France
| | - Sandra Lecat
- Biotechnology and Cell Signaling, UMR7242 CNRS, University of Strasbourg, Illkirch-Graffenstaden, France
| | - Frédéric Simonin
- Biotechnology and Cell Signaling, UMR7242 CNRS, University of Strasbourg, Illkirch-Graffenstaden, France.
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Sleep Deprivation Induces Dopamine System Maladaptation and Escalated Corticotrophin-Releasing Factor Signaling in Adolescent Mice. Mol Neurobiol 2023; 60:3190-3209. [PMID: 36813955 DOI: 10.1007/s12035-023-03258-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 02/07/2023] [Indexed: 02/24/2023]
Abstract
Sleep disruption is highly associated with the pathogenesis and progression of a wild range of psychiatric disorders. Furthermore, appreciable evidence shows that experimental sleep deprivation (SD) on humans and rodents evokes anomalies in the dopaminergic (DA) signaling, which are also implicated in the development of psychiatric illnesses such as schizophrenia or substance abuse. Since adolescence is a vital period for the maturation of the DA system as well as the occurrence of mental disorders, the present studies aimed to investigate the impacts of SD on the DA system of adolescent mice. We found that 72 h SD elicited a hyperdopaminergic status, with increased sensitivity to the novel environment and amphetamine (Amph) challenge. Also, altered neuronal activity and expression of striatal DA receptors were noticed in the SD mice. Moreover, 72 h SD influenced the immune status in the striatum, with reduced microglial phagocytic capacity, primed microglial activation, and neuroinflammation. The abnormal neuronal and microglial activity were putatively provoked by the enhanced corticotrophin-releasing factor (CRF) signaling and sensitivity during the SD period. Together, our findings demonstrated the consequences of SD in adolescents including aberrant neuroendocrine, DA system, and inflammatory status. Sleep insufficiency is a risk factor for the aberration and neuropathology of psychiatric disorders.
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Ceccanti M, Blum K, Bowirrat A, Dennen CA, Braverman ER, Baron D, Mclaughlin T, Giordano J, Gupta A, Downs BW, Bagchi D, Barh D, Elman I, Thanos PK, Badgaiyan RD, Edwards D, Gold MS. Future Newborns with Opioid-Induced Neonatal Abstinence Syndrome (NAS) Could Be Assessed with the Genetic Addiction Risk Severity (GARS) Test and Potentially Treated Using Precision Amino-Acid Enkephalinase Inhibition Therapy (KB220) as a Frontline Modality Instead of Potent Opioids. J Pers Med 2022; 12:jpm12122015. [PMID: 36556236 PMCID: PMC9782293 DOI: 10.3390/jpm12122015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/14/2022] [Accepted: 11/25/2022] [Indexed: 12/12/2022] Open
Abstract
In this nonsystematic review and opinion, including articles primarily selected from PubMed, we examine the pharmacological and nonpharmacological treatments of neonatal abstinence syndrome (NAS) in order to craft a reasonable opinion to help forge a paradigm shift in the treatment and prevention of primarily opioid-induced NAS. Newborns of individuals who use illicit and licit substances during pregnancy are at risk for withdrawal, also known as NAS. In the US, the reported prevalence of NAS has increased from 4.0 per 1000 hospital births in 2010 to 7.3 per 1000 hospital births in 2017, which is an 82% increase. The management of NAS is varied and involves a combination of nonpharmacologic and pharmacologic therapy. The preferred first-line pharmacological treatment for NAS is opioid therapy, specifically morphine, and the goal is the short-term improvement in NAS symptomatology. Nonpharmacological therapies are individualized and typically focus on general care measures, the newborn-parent/caregiver relationship, the environment, and feeding. When used appropriately, nonpharmacologic therapies can help newborns with NAS avoid or reduce the amount of pharmacologic therapy required and the length of hospitalization. In addition, genetic polymorphisms of the catechol-o-methyltransferase (COMT) and mu-opioid receptor (OPRM1) genes appear to affect the length of stay and the need for pharmacotherapy in newborns with prenatal opioid exposure. Therefore, based on this extensive literature and additional research, this team of coauthors suggests that, in the future, in addition to the current nonpharmacological therapies, patients with opioid-induced NAS should undergo genetic assessment (i.e., the genetic addiction risk severity (GARS) test), which can subsequently be used to guide DNA-directed precision amino-acid enkephalinase inhibition (KB220) therapy as a frontline modality instead of potent opioids.
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Affiliation(s)
- Mauro Ceccanti
- Società Italiana per il Trattamento dell’Alcolismo e le sue Complicanze (SITAC), ASL Roma1, Sapienza University of Rome, 00185 Rome, Italy
| | - Kenneth Blum
- The Kenneth Blum Behavioral & Neurogenetic Institute, Austin, TX 78701, USA
- Division of Addiction Research & Education, Center for Mental Health & Sports, Exercise and Global Mental Health, Western University Health Sciences, Pomona, CA 91766, USA
- Institute of Psychology, ELTE Eötvös Loránd University, Egyetem tér 1-3, H-1053 Budapest, Hungary
- Department of Psychiatry, School of Medicine, University of Vermont, Burlington, VT 05405, USA
- Department of Psychiatry, Wright State University Boonshoft School of Medicine and Dayton VA Medical Centre, Dayton, OH 45324, USA
- Reward Deficiency Clinics of America, Austin, TX 78701, USA
- Center for Genomics and Applied Gene Technology, Institute of Integrative Omics and applied Biotechnology (IIOAB), Nonakuri, Purba Medinipur, West Bengal 721172, India
- Department of Precision Behavioral Management, Transplicegen Therapeutics, Inc., LLC., Austin, TX 78701, USA
- Department of Molecular Biology and Adelson School of Medicine, Ariel University, Ariel 40700, Israel
- Correspondence: (K.B.); (A.G.)
| | - Abdalla Bowirrat
- Department of Molecular Biology and Adelson School of Medicine, Ariel University, Ariel 40700, Israel
| | - Catherine A. Dennen
- Department of Family Medicine, Jefferson Health Northeast, Philadelphia, PA 19107, USA
| | - Eric R. Braverman
- The Kenneth Blum Behavioral & Neurogenetic Institute, Austin, TX 78701, USA
| | - David Baron
- Division of Addiction Research & Education, Center for Mental Health & Sports, Exercise and Global Mental Health, Western University Health Sciences, Pomona, CA 91766, USA
| | | | - John Giordano
- The Kenneth Blum Behavioral & Neurogenetic Institute, Austin, TX 78701, USA
- Ketamine Infusion Clinic of South Florida, Pompano Beach, FL 33062, USA
| | - Ashim Gupta
- Future Biologics, Lawrenceville, GA 30043, USA
- Correspondence: (K.B.); (A.G.)
| | - Bernard W. Downs
- The Kenneth Blum Behavioral & Neurogenetic Institute, Austin, TX 78701, USA
| | - Debasis Bagchi
- The Kenneth Blum Behavioral & Neurogenetic Institute, Austin, TX 78701, USA
- Department of Pharmaceutical Sciences, Southern University College of Pharmacy, Houston, TX 77004, USA
| | - Debmalya Barh
- Center for Genomics and Applied Gene Technology, Institute of Integrative Omics and applied Biotechnology (IIOAB), Nonakuri, Purba Medinipur, West Bengal 721172, India
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Igor Elman
- Center for Pain and the Brain (PAIN Group), Department of Anesthesiology, Critical Care & Pain Medicine, Boston Children’s Hospital, Harvard School of Medicine, Boston, MA 02115, USA
| | - Panayotis K. Thanos
- Behavioral Neuropharmacology and Neuroimaging Laboratory, Clinical Research Institute on Addictions, Department of Pharmacology and Toxicology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY 14203, USA
| | - Rajendra D. Badgaiyan
- Department of Psychiatry, South Texas Veteran Health Care System, Audie L. Murphy Memorial VA Hospital, Long School of Medicine, University of Texas Medical Center, San Antonio, TX 78229, USA
| | - Drew Edwards
- Neurogenesis Project, Jacksonville, FL 32223, USA
| | - Mark S. Gold
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USA
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Gill KE, McGarrigle WJ, Neel AI, Tonto DOW, Greenleaf KL. D2 receptor antagonism enhances cocaine-induced behavioral sensitization in female, but not male Japanese quail ( Coturnix japonica ). Behav Pharmacol 2022; 33:355-363. [PMID: 35695537 DOI: 10.1097/fbp.0000000000000686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Sex differences in cocaine-induced behaviors are well established. In rodents, females show enhanced locomotion to cocaine over multiple trials compared with males, a behavioral response known as sensitization. Estradiol enhances cocaine-induced sensitization in female rats by agonizing dopaminergic activity within the brain. In female quail, cocaine does not increase locomotion regardless of increased estradiol. A higher D2:D1 dopamine receptor ratio in quail compared with rodents may explain this sex and species difference. The goal of the present work was to investigate the role of D2 receptors in cocaine-induced locomotion and sensitization in Japanese quail and to determine whether a greater D2 receptor availability contributed to the lack of cocaine-induced sensitization in female quail found in previous studies. Male and female quail were administered 0, 0.03, 0.05, or 0.07 mg/kg of eticlopride (Eti) followed by 10 mg/kg of cocaine or saline then immediately placed in open-field chambers. Distance traveled was recorded for 30 min daily for 7 days. In female quail, cocaine-induced sensitization was observed with 0.03 or 0.05 mg/kg Eti, but not in cocaine-only females. In male quail, cocaine-induced sensitization was observed similar to previous research. However, Eti did not enhance cocaine-induced locomotion or produce sensitization in male quail. The D2 receptor likely mediates cocaine's motor stimulating effects in quail. In females, this effect is more pronounced. Since high D2 availability is protective against stimulant abuse, Japanese quail may be a useful model for investigating the role of the D2 receptor in cocaine addiction, but further research is needed.
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Affiliation(s)
- Karin E Gill
- Department of Behavioral Neuroscience, Centre College, Danville, Kentucky
| | - William J McGarrigle
- Department of Psychology, Rosalind Franklin University of Medicine and Science, Chicago, Illinois, USA
| | - Anna Isabella Neel
- Department of Behavioral Neuroscience, Centre College, Danville, Kentucky
| | - Derrick O W Tonto
- Department of Behavioral Neuroscience, Centre College, Danville, Kentucky
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Spelta LEW, Torres YYS, de Oliveira SCWSEF, Yonamine M, Bailey A, Camarini R, Garcia RCT, Marcourakis T. Chronic escalating-dose and acute binge cocaine treatments change the hippocampal cholinergic muscarinic system on drug presence and after withdrawal. Toxicol Appl Pharmacol 2022; 447:116068. [PMID: 35597300 DOI: 10.1016/j.taap.2022.116068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 04/22/2022] [Accepted: 05/13/2022] [Indexed: 12/21/2022]
Abstract
Cocaine addiction is a relapsing disorder with loss of control in limiting drug intake. Considering the involvement of acetylcholine in the neurobiology of the disease, our aim was to evaluate whether cocaine induces plastic changes in the hippocampal cholinergic muscarinic system. Male Swiss-Webster mice received saline or cocaine (ip) three times daily (60-min intervals) either acutely or in an escalating-dose binge paradigm for 14 days. Locomotor activity was measured in all treatment days. Dopaminergic and cholinergic muscarinic receptors (D1R, D2R, M1-M5, mAChRs), choline acetyltransferase (ChAT), vesicular acetylcholine transporter (VAChT) and acetylcholinesterase (AChE) were quantified in the hippocampus by immunoblotting one hour after the last injection (on drug) or after 14 days of abstinence (withdrawal). Escalating-dose group showed cocaine-induced locomotor sensitization from day 2. M3 mAChR and ChAT significantly increased after the on-drug acute binge treatment. Escalating-dose on-drug group showed increased ChAT, M1, M5 mAChR and D2R; and decreased D1R. Acute-binge withdrawal group showed increased VAChT, M2 mAChR, D1R, and D2R; and decreased M1 mAChR. Escalating-dose withdrawal group presented increased D1R and VAChT and decreased M1 mAChR and D2R. Locomotor activity was negatively correlated with M1 mAChR and AChE in on-drug group and positively correlated with VAChT in withdrawal group. M1 mAChR was positively correlated with M2 mAChR and ChAT in on-drug group, whereas ChAT was positively correlated with M5 mAChR in withdrawal group. The results indicate that cocaine induced an increase in the hippocampal cholinergic tone in the presence of the drug, whereas withdrawal causes a resetting in the system.
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Affiliation(s)
- Lidia E W Spelta
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, Bl. 13B, 05508-000 São Paulo/SP, Brazil
| | - Yuli Y S Torres
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, Bl. 13B, 05508-000 São Paulo/SP, Brazil
| | - Sarah C W S E F de Oliveira
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, Bl. 13B, 05508-000 São Paulo/SP, Brazil; Pharmacosciences Department, Federal University of Health Sciences of Porto Alegre, Porto Alegre, RS 90050-170, Brazil
| | - Maurício Yonamine
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, Bl. 13B, 05508-000 São Paulo/SP, Brazil
| | - Alexis Bailey
- Pharmacology Section, Institute of Medical and Biomedical Education, St George's University of London, Cranmer Terrace, SW17 0RE London, UK
| | - Rosana Camarini
- Department of Pharmacology, Laboratory of Neurochemical and Behavior Pharmacology, Institute of Biomedical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 1524, Prédio 1, 05508-900 São Paulo/SP, Brazil.
| | - Raphael C T Garcia
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Rua São Nicolau, 210, 1° andar, 09913-030 Diadema/SP, Brazil.
| | - Tania Marcourakis
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, Bl. 13B, 05508-000 São Paulo/SP, Brazil.
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The role of the nucleus accumbens and ventral pallidum in feeding and obesity. Prog Neuropsychopharmacol Biol Psychiatry 2021; 111:110394. [PMID: 34242717 DOI: 10.1016/j.pnpbp.2021.110394] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 05/31/2021] [Accepted: 06/29/2021] [Indexed: 02/04/2023]
Abstract
Obesity is a growing global epidemic that stems from the increasing availability of highly-palatable foods and the consequent enhanced calorie consumption. Extensive research has shown that brain regions that are central to reward seeking modulate feeding and evidence linking obesity to pathology in such regions have recently started to accumulate. In this review we focus on the contribution of two major interconnected structures central to reward processing, the nucleus accumbens and the ventral pallidum, to obesity. We first review the known literature linking these structures to feeding behavior, then discuss recent advances connecting pathology in the nucleus accumbens and ventral pallidum to obesity, and finally examine the similarities and differences between drug addiction and obesity in the context of these two structures. The understanding of how pathology in brain regions involved in reward seeking and consumption may drive obesity and how mechanistically similar obesity and addiction are, is only now starting to be revealed. We hope that future research will advance knowledge in the field and open new avenues to studying and treating obesity.
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Poisson CL, Engel L, Saunders BT. Dopamine Circuit Mechanisms of Addiction-Like Behaviors. Front Neural Circuits 2021; 15:752420. [PMID: 34858143 PMCID: PMC8631198 DOI: 10.3389/fncir.2021.752420] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/08/2021] [Indexed: 12/16/2022] Open
Abstract
Addiction is a complex disease that impacts millions of people around the world. Clinically, addiction is formalized as substance use disorder (SUD), with three primary symptom categories: exaggerated substance use, social or lifestyle impairment, and risky substance use. Considerable efforts have been made to model features of these criteria in non-human animal research subjects, for insight into the underlying neurobiological mechanisms. Here we review evidence from rodent models of SUD-inspired criteria, focusing on the role of the striatal dopamine system. We identify distinct mesostriatal and nigrostriatal dopamine circuit functions in behavioral outcomes that are relevant to addictions and SUDs. This work suggests that striatal dopamine is essential for not only positive symptom features of SUDs, such as elevated intake and craving, but also for impairments in decision making that underlie compulsive behavior, reduced sociality, and risk taking. Understanding the functional heterogeneity of the dopamine system and related networks can offer insight into this complex symptomatology and may lead to more targeted treatments.
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Affiliation(s)
- Carli L. Poisson
- Department of Neuroscience, University of Minnesota, Minneapolis, MN, United States
- Medical Discovery Team on Addiction, University of Minnesota, Minneapolis, MN, United States
- Graduate Program in Neuroscience, University of Minnesota, Minneapolis, MN, United States
| | - Liv Engel
- Department of Neuroscience, University of Minnesota, Minneapolis, MN, United States
- Medical Discovery Team on Addiction, University of Minnesota, Minneapolis, MN, United States
| | - Benjamin T. Saunders
- Department of Neuroscience, University of Minnesota, Minneapolis, MN, United States
- Medical Discovery Team on Addiction, University of Minnesota, Minneapolis, MN, United States
- Graduate Program in Neuroscience, University of Minnesota, Minneapolis, MN, United States
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10
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Kim YJ, Kong Q, Yamamoto S, Kuramoto K, Huang M, Wang N, Hong JH, Xiao T, Levine B, Qiu X, Zhao Y, Miller RJ, Dong H, Meltzer HY, Xu M, He C. An autophagy-related protein Becn2 regulates cocaine reward behaviors in the dopaminergic system. SCIENCE ADVANCES 2021; 7:7/8/eabc8310. [PMID: 33608268 PMCID: PMC7895433 DOI: 10.1126/sciadv.abc8310] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
Drug abuse is a foremost public health problem. Cocaine is a widely abused drug worldwide that produces various reward-related behaviors. The mechanisms that underlie cocaine-induced disorders are unresolved, and effective treatments are lacking. Here, we found that an autophagy-related protein Becn2 is a previously unidentified regulator of cocaine reward behaviors. Becn2 deletion protects mice from cocaine-stimulated locomotion and reward behaviors, as well as cocaine-induced dopamine accumulation and signaling, by increasing presynaptic dopamine receptor 2 (D2R) autoreceptors in dopamine neurons. Becn2 regulates D2R endolysosomal trafficking, degradation, and cocaine-induced behaviors via interacting with a D2R-bound adaptor GASP1. Inactivating Becn2 by upstream autophagy inhibitors stabilizes striatal presynaptic D2R, reduces dopamine release and signaling, and prevents cocaine reward in normal mice. Thus, the autophagy protein Becn2 is essential for cocaine psychomotor stimulation and reward through regulating dopamine neurotransmission, and targeting Becn2 by autophagy inhibitors is a potential strategy to prevent cocaine-induced behaviors.
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Affiliation(s)
- Yoon-Jin Kim
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Qingyao Kong
- Department of Anesthesia and Critical Care, The University of Chicago, Chicago, IL 60637, USA
| | - Soh Yamamoto
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
- Department of Microbiology, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan
| | - Kenta Kuramoto
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Mei Huang
- Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Nan Wang
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
- Key Laboratory of Industrial Microbiology, Ministry of Education and Tianjin City, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Jung Hwa Hong
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Tong Xiao
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Beth Levine
- Departments of Internal Medicine and Microbiology, Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Xianxiu Qiu
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Yanxiang Zhao
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Richard J Miller
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Hongxin Dong
- Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Herbert Y Meltzer
- Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Ming Xu
- Department of Anesthesia and Critical Care, The University of Chicago, Chicago, IL 60637, USA
| | - Congcong He
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
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11
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Lyu S, Doroodchi A, Xing H, Sheng Y, DeAndrade MP, Yang Y, Johnson TL, Clemens S, Yokoi F, Miller MA, Xiao R, Li Y. BTBD9 and dopaminergic dysfunction in the pathogenesis of restless legs syndrome. Brain Struct Funct 2020; 225:1743-1760. [PMID: 32468214 DOI: 10.1007/s00429-020-02090-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 05/13/2020] [Indexed: 01/17/2023]
Abstract
Restless legs syndrome (RLS) is characterized by an urge to move legs, usually accompanied by uncomfortable sensations. RLS symptoms generally happen at night and can be relieved by movements. Genetic studies have linked polymorphisms in BTBD9 to a higher risk of RLS. Knockout of BTBD9 homolog in mice (Btbd9) and fly results in RLS-like phenotypes. A dysfunctional dopaminergic system is associated with RLS. However, the function of BTBD9 in the dopaminergic system and RLS is not clear. Here, we made use of the simple Caenorhabditis elegans nervous system. Loss of hpo-9, the worm homolog of BTBD9, resulted in hyperactive egg-laying behavior. Analysis of genetic interactions between hpo-9 and genes for dopamine receptors (dop-1, dop-3) indicated that hpo-9 and dop-1 worked similarly. Reporter assays of dop-1 and dop-3 revealed that hpo-9 knockout led to a significant increase of DOP-3 expression. This appears to be evolutionarily conserved in mice with an increased D2 receptor (D2R) mRNA in the striatum of the Btbd9 knockout mice. Furthermore, the striatal D2R protein was significantly decreased and Dynamin I was increased. Overall, activities of DA neurons in the substantia nigra were not altered, but the peripheral D1R pathway was potentiated in the Btbd9 knockout mice. Finally, we generated and characterized the dopamine neuron-specific Btbd9 knockout mice and detected an active-phase sleepiness, suggesting that dopamine neuron-specific loss of Btbd9 is sufficient to disturb the sleep. Our results suggest that increased activities in the D1R pathway, decreased activities in the D2R pathway, or both may contribute to RLS.
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Affiliation(s)
- Shangru Lyu
- Department of Neurology, Norman Fixel Institute for Neurological Diseases, College of Medicine, University of Florida, PO Box 100236, Gainesville, FL, 32610-0236, USA
| | - Atbin Doroodchi
- Department of Cell, Developmental and Integrative Biology, The University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Hong Xing
- Department of Neurology, Norman Fixel Institute for Neurological Diseases, College of Medicine, University of Florida, PO Box 100236, Gainesville, FL, 32610-0236, USA
| | - Yi Sheng
- Department of Aging and Geriatric Research, College of Medicine, University of Florida, Gainesville, FL, 32610, USA
| | - Mark P DeAndrade
- Department of Neurology, Norman Fixel Institute for Neurological Diseases, College of Medicine, University of Florida, PO Box 100236, Gainesville, FL, 32610-0236, USA
| | - Youfeng Yang
- Department of Cell, Developmental and Integrative Biology, The University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Tracy L Johnson
- Department of Physiology, Brody School of Medicine, East Carolina University, Greenville, NC, 27834, USA
| | - Stefan Clemens
- Department of Physiology, Brody School of Medicine, East Carolina University, Greenville, NC, 27834, USA
| | - Fumiaki Yokoi
- Department of Neurology, Norman Fixel Institute for Neurological Diseases, College of Medicine, University of Florida, PO Box 100236, Gainesville, FL, 32610-0236, USA
| | - Michael A Miller
- Department of Cell, Developmental and Integrative Biology, The University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Rui Xiao
- Department of Aging and Geriatric Research, College of Medicine, University of Florida, Gainesville, FL, 32610, USA
| | - Yuqing Li
- Department of Neurology, Norman Fixel Institute for Neurological Diseases, College of Medicine, University of Florida, PO Box 100236, Gainesville, FL, 32610-0236, USA.
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12
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Escobar ADP, Casanova JP, Andrés ME, Fuentealba JA. Crosstalk Between Kappa Opioid and Dopamine Systems in Compulsive Behaviors. Front Pharmacol 2020; 11:57. [PMID: 32132923 PMCID: PMC7040183 DOI: 10.3389/fphar.2020.00057] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 01/22/2020] [Indexed: 12/02/2022] Open
Abstract
The strength of goal-oriented behaviors is regulated by midbrain dopamine neurons. Dysfunctions of dopaminergic circuits are observed in drug addiction and obsessive-compulsive disorder. Compulsive behavior is a feature that both disorders share, which is associated to a heightened dopamine neurotransmission. The activity of midbrain dopamine neurons is principally regulated by the homeostatic action of dopamine through D2 receptors (D2R) that decrease the firing of neurons as well as dopamine synthesis and release. Dopamine transmission is also regulated by heterologous neurotransmitter systems such as the kappa opioid system, among others. Much of our current knowledge of the kappa opioid system and its influence on dopamine transmission comes from preclinical animal models of brain diseases. In 1988, using cerebral microdialysis, it was shown that the acute activation of the Kappa Opioid Receptors (KOR) decreases synaptic levels of dopamine in the striatum. This inhibitory effect of KOR opposes to the facilitating influence of drugs of abuse on dopamine release, leading to the proposition of the use of KOR agonists as pharmacological therapy for compulsive drug intake. Surprisingly, 30 years later, KOR antagonists are instead proposed to treat drug addiction. What may have happened during these years that generated this drastic change of paradigm? The collected evidence suggested that the effect of KOR on synaptic dopamine levels is complex, depending on the frequency of KOR activation and timing with other incoming stimuli to dopamine neurons, as well as sex and species differences. Conversely to its acute effect, chronic KOR activation seems to facilitate dopamine neurotransmission and dopamine-mediated behaviors. The opposing actions exerted by acute versus chronic KOR activation have been associated with an initial aversive and a delayed rewarding effect, during the exposure to drugs of abuse. Compulsive behaviors induced by repeated activation of D2R are also potentiated by the sustained co-activation of KOR, which correlates with decreased synaptic levels of dopamine and sensitized D2R. Thus, the time-dependent activation of KOR impacts directly on dopamine levels affecting the tuning of motivated behaviors. This review analyzes the contribution of the kappa opioid system to the dopaminergic correlates of compulsive behaviors.
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Affiliation(s)
- Angélica Del Pilar Escobar
- Centro Interdisciplinario de Neurociencias de Valparaíso, Faculty of Sciences, Universidad de Valparaíso, Valparaíso, Chile
| | - José Patricio Casanova
- Departamento de Neurociencia, Facultad de Medicina, Universidad de Chile, Santiago, Chile.,Núcleo Milenio NUMIND Biology of Neuropsychiatric Disorders, Universidad de Valparaíso, Valparaíso, Chile
| | - María Estela Andrés
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José Antonio Fuentealba
- Department of Pharmacy and Interdisciplinary Center of Neuroscience, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Santiago, Chile
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13
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Attenuated dopamine receptor signaling in nucleus accumbens core in a rat model of chemically-induced neuropathy. Neuropharmacology 2020; 166:107935. [PMID: 31917153 DOI: 10.1016/j.neuropharm.2020.107935] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 12/10/2019] [Accepted: 01/02/2020] [Indexed: 02/06/2023]
Abstract
Neuropathy is major source of chronic pain that can be caused by mechanically or chemically induced nerve injury. Intraplantar formalin injection produces local necrosis over a two-week period and has been used to model neuropathy in rats. To determine whether neuropathy alters dopamine (DA) receptor responsiveness in mesolimbic brain regions, we examined dopamine D1-like and D2-like receptor (D1/2R) signaling and expression in male rats 14 days after bilateral intraplantar formalin injections into both rear paws. D2R-mediated G-protein activation and expression of the D2R long, but not short, isoform were reduced in nucleus accumbens (NAc) core, but not in NAc shell, caudate-putamen or ventral tegmental area of formalin- compared to saline-treated rats. In addition, D1R-stimulated adenylyl cyclase activity was also reduced in NAc core, but not in NAc shell or prefrontal cortex, of formalin-treated rats, whereas D1R expression was unaffected. Other proteins involved in dopamine neurotransmission, including dopamine uptake transporter and tyrosine hydroxylase, were unaffected by formalin treatment. In behavioral tests, the potency of a D2R agonist to suppress intracranial self-stimulation (ICSS) was decreased in formalin-treated rats, whereas D1R agonist effects were not altered. The combination of reduced D2R expression and signaling in NAc core with reduced suppression of ICSS responding by a D2R agonist suggest a reduction in D2 autoreceptor function. Altogether, these results indicate that intraplantar formalin produces attenuation of highly specific DA receptor signaling processes in NAc core of male rats and suggest the development of a neuropathy-induced allostatic state in both pre- and post-synaptic DA receptor function.
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14
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Liu L, Luo T, Dong H, Zhang C, Liu T, Zhang X, Hao W. Genome-Wide DNA Methylation Analysis in Male Methamphetamine Users With Different Addiction Qualities. Front Psychiatry 2020; 11:588229. [PMID: 33192735 PMCID: PMC7645035 DOI: 10.3389/fpsyt.2020.588229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 09/24/2020] [Indexed: 12/20/2022] Open
Abstract
This paper aimed to explore the genome-wide DNA methylation status of methamphetamine (MA) abusers with different qualities to addiction and to identify differentially methylated candidate genes. A total of 207 male MA abusers with an MA abuse frequency of ≥10 times and an MA abuse duration of ≥1 year were assigned to the high MA addiction quality group (HMAQ group; 168 subjects who met the diagnostic criteria for MA dependence according to the DSM-IV) or to the low MA addictive quality group (LMAQ group; 39 subjects who did not meet the criteria for MA dependence). In addition 105 healthy controls were recruited. Eight HMAQ subjects, eight LMAQ subjects, and eight healthy controls underwent genome-wide DNA methylation scans with an Infinium Human Methylation 450 array (Illumina). The differentially methylated region (DMR) data were entered into pathway analysis, and the differentially methylated position (DMP) data were screened for candidate genes and verified by MethyLight qPCR with all samples. Seven specific pathways with an abnormal methylation status were identified, including the circadian entrainment, cholinergic synapse, glutamatergic synapse, retrograde endocannabinoid signaling, GABAergic synapse, morphine addiction and PI3K-Akt signaling pathways. SLC1A6, BHLHB9, LYNX1, CAV2, and PCSK9 showed differences in their methylation levels in the three groups. Only the number of methylated copies of CAV2 was significantly higher in the LMAQ group than in the HMAQ group. Our findings suggest that the circadian entrainment pathway and the caveolin-2 gene may play key roles in MA addiction quality. Further studies on their functions and mechanisms will help us to better understand the pathogenesis of MA addiction and to explore new targets for drug intervention.
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Affiliation(s)
- Liang Liu
- Department of Geriatric Psychiatry, Wuxi Mental Health Center, Nanjing Medical University, Wuxi, China.,Hunan Key Laboratory of Psychiatry and Mental Health, Department of Psychiatry and Mental Health Institute of the Second Xiangya Hospital, National Clinical Research Center on Mental Disorders, National Technology Institute on Mental Disorders, Central South University, Changsha, China
| | - Tao Luo
- Hunan Key Laboratory of Psychiatry and Mental Health, Department of Psychiatry and Mental Health Institute of the Second Xiangya Hospital, National Clinical Research Center on Mental Disorders, National Technology Institute on Mental Disorders, Central South University, Changsha, China.,Department of Clinic Psychiatry, Jiangxi Mental Hospital, Nanchang University, Nanchang, China
| | - Huixi Dong
- Hunan Key Laboratory of Psychiatry and Mental Health, Department of Psychiatry and Mental Health Institute of the Second Xiangya Hospital, National Clinical Research Center on Mental Disorders, National Technology Institute on Mental Disorders, Central South University, Changsha, China
| | - Chenxi Zhang
- Hunan Key Laboratory of Psychiatry and Mental Health, Department of Psychiatry and Mental Health Institute of the Second Xiangya Hospital, National Clinical Research Center on Mental Disorders, National Technology Institute on Mental Disorders, Central South University, Changsha, China
| | - Tieqiao Liu
- Hunan Key Laboratory of Psychiatry and Mental Health, Department of Psychiatry and Mental Health Institute of the Second Xiangya Hospital, National Clinical Research Center on Mental Disorders, National Technology Institute on Mental Disorders, Central South University, Changsha, China
| | - Xiangyang Zhang
- Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Wei Hao
- Hunan Key Laboratory of Psychiatry and Mental Health, Department of Psychiatry and Mental Health Institute of the Second Xiangya Hospital, National Clinical Research Center on Mental Disorders, National Technology Institute on Mental Disorders, Central South University, Changsha, China
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15
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Marie N, Canestrelli C, Noble F. Role of pharmacokinetic and pharmacodynamic parameters in neuroadaptations induced by drugs of abuse, with a focus on opioids and psychostimulants. Neurosci Biobehav Rev 2019; 106:217-226. [DOI: 10.1016/j.neubiorev.2018.06.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 05/29/2018] [Accepted: 06/06/2018] [Indexed: 01/16/2023]
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16
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Suh Y, Noh SJ, Lee S, Suh BK, Lee SB, Choi J, Jeong J, Kim S, Park SK. Dopamine D1 Receptor (D1R) Expression Is Controlled by a Transcriptional Repressor Complex Containing DISC1. Mol Neurobiol 2019; 56:6725-6735. [PMID: 30915712 PMCID: PMC6728282 DOI: 10.1007/s12035-019-1566-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 03/13/2019] [Indexed: 11/26/2022]
Abstract
Disrupted-in-Schizophrenia 1 (DISC1) is a scaffold protein implicated in various psychiatric diseases. Dysregulation of the dopamine system has been associated with DISC1 deficiency, while the molecular mechanism is unclear. In this study, we propose a novel molecular mechanism underlying the transcriptional regulation of the dopamine D1 receptor (D1R) in the striatum via DISC1. We verified the increase in D1R at the transcriptional level in the striatum of DISC1-deficient mouse models and altered histone acetylation status at the D1r locus. We identified a functional interaction between DISC1 and Krüppel-like factor 16 (KLF16). KLF16 translocates DISC1 into the nucleus and forms a regulatory complex by recruiting SIN3A corepressor complexes to the D1r locus. Moreover, DISC1-deficient mice have altered D1R-mediated signaling in the striatum and exhibit hyperlocomotion in response to cocaine; the blockade of D1R suppresses these effects. Taken together, our results suggest that nuclear DISC1 plays a critical role in the transcriptional regulation of D1R in the striatal neuron, providing a mechanistic link between DISC1 and dopamine-related psychiatric symptoms.
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Affiliation(s)
- Yeongjun Suh
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Su-Jin Noh
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Saebom Lee
- The Russell H. Morgan Department of Radiology and Radiological Sciences, The Johns Hopkins University of School of Medicine, Baltimore, MD, USA
- The Center for Nanomedicine at Wilmer Eye Institute, The Johns Hopkins University of School of Medicine, Baltimore, MD, USA
| | - Bo Kyoung Suh
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Su Been Lee
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Jinhyuk Choi
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Jaehoon Jeong
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Sangjune Kim
- Neurodegeneration and Stem Cell Programs, Institute for Cell Engineering, The Johns Hopkins University of School of Medicine, Baltimore, MD, USA
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Sang Ki Park
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.
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17
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Atehortua-Martinez LA, Masniere C, Campolongo P, Chasseigneaux S, Callebert J, Zwergel C, Mai A, Laplanche JL, Chen H, Etheve-Quelquejeu M, Mégarbane B, Benturquia N. Acute and chronic neurobehavioral effects of the designer drug and bath salt constituent 3,4-methylenedioxypyrovalerone in the rat. J Psychopharmacol 2019; 33:392-405. [PMID: 30644332 DOI: 10.1177/0269881118822151] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND The substantial increase in use of 3,4-methylenedioxypyrovalerone (MDPV), a popular recreational synthetic cathinone, has raised legitimate questions about its behavioral consequences and abuse liability. AIMS The aim of this study was to study MDPV-induced neurobehavioral effects in the rat, using different paradigms traditionally developed to study drug-attributed addictive properties. METHODS Different patterns of intraperitoneal 3 mg/kg MDPV administration were investigated. Consequences on rat horizontal locomotion and behavior of acute, intermittent (once daily dosing over 10 days), and binge (three-time daily dosing for 3 days) MDPV administration as well as challenge after 10 day MDPV withdrawal were studied. The dopamine receptor-D1 antagonist, SCH23390, was bilaterally infused in the nucleus accumbens to determine the role of D1-receptors in MDPV-related effects on the associative memory recall using the conditioned place preference paradigm. In addition, in a separate experience using western blot, we investigated the effects of chronic MDPV administration (four injections during 24 h) on ΔFosB expression in the nucleus accumbens, caudate putamen, and prefrontal cortex. RESULTS Acute MDPV administration increased stereotypies and open arm entries in the elevated plus maze while SCH23390 abolished MDPV-induced enhancing effects on memory consolidation. Intermittent MDPV administration resulted in sensitization of MDPV-induced locomotor effects and tolerance during the following challenge. With binge MDPV administration, locomotor activity was not altered despite tolerance onset after challenge. SCH23390 abolished MDPV-induced conditioned place preference. Chronic MDPV administration induced ΔFosB accumulation in the nucleus accumbens, caudate putamen, and prefrontal cortex. CONCLUSIONS Our findings clearly show that MDPV produces profound behavioral alterations mediated by the activation of the dopaminergic system similarly to other amphetamines.
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Affiliation(s)
| | - Cyriaque Masniere
- 1 Inserm, UMR-S 1144, Paris-Descartes and Paris-Diderot University, Paris, France
| | - Patrizia Campolongo
- 2 Department of Physiology and Pharmacology "V. Erspamer", Sapienza University of Rome and IRCCS Santa Lucia Foundation, Rome, Italy
| | | | - Jacques Callebert
- 1 Inserm, UMR-S 1144, Paris-Descartes and Paris-Diderot University, Paris, France
| | - Clemens Zwergel
- 3 Department of Chemistry and Technology of Drugs, Sapienza University of Rome, Rome, Italy
| | - Antonello Mai
- 3 Department of Chemistry and Technology of Drugs, Sapienza University of Rome, Rome, Italy
| | - Jean-Louis Laplanche
- 1 Inserm, UMR-S 1144, Paris-Descartes and Paris-Diderot University, Paris, France
| | - Huixiong Chen
- 4 CNRS, UMR8601, Laboratory of Chemistry and Pharmacological and Toxicological Biochemistry, CBNIT, Paris-Descartes University, Paris, France
| | - Mélanie Etheve-Quelquejeu
- 4 CNRS, UMR8601, Laboratory of Chemistry and Pharmacological and Toxicological Biochemistry, CBNIT, Paris-Descartes University, Paris, France
| | - Bruno Mégarbane
- 1 Inserm, UMR-S 1144, Paris-Descartes and Paris-Diderot University, Paris, France.,5 Department of Medical and Toxicological Critical Care, Lariboisière Hospital, Paris, France
| | - Nadia Benturquia
- 1 Inserm, UMR-S 1144, Paris-Descartes and Paris-Diderot University, Paris, France
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18
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Duart-Castells L, López-Arnau R, Buenrostro-Jáuregui M, Muñoz-Villegas P, Valverde O, Camarasa J, Pubill D, Escubedo E. Neuroadaptive changes and behavioral effects after a sensitization regime of MDPV. Neuropharmacology 2018; 144:271-281. [PMID: 30321610 DOI: 10.1016/j.neuropharm.2018.10.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 10/03/2018] [Accepted: 10/07/2018] [Indexed: 10/28/2022]
Abstract
3,4-methylenedioxypyrovalerone (MDPV) is a synthetic cathinone with cocaine-like properties. In a previous work, we exposed adolescent mice to MDPV, finding sensitization to cocaine effects, and a higher vulnerability to cocaine abuse in adulthood. Here we sought to determine if such MDPV schedule induces additional behavioral-neuronal changes that could explain such results. After MDPV treatment (1.5 mg kg-1, twice daily, 7 days), mice were behaviorally tested. Also, we investigated protein changes in various brain regions. MDPV induced aggressiveness and anxiety, but also contributed to a faster habituation to the open field. This feature co-occurred with an induction of ΔFosB in the orbitofrontal cortex that was higher than its expression in the ventral striatum. Early after treatment, D2R:D1R ratio pointed to a preponderance of D1R but, upon withdrawal, the ratio recovered. Increased expression of Arc, CDK5 and TH, and decrease in DAT protein levels persisted longer after withdrawal, pointing to a neuroplastic lasting effect similar to that involved in cocaine addiction. The implication of the hyperdopaminergic condition in the MDPV-induced aggressiveness cannot be ruled out. We also found an initial oxidative effect of MDPV, without glial activation. Moreover, although initially the dopaminergic signal induced by MDPV resulted in increased ΔFosB, we did not observe any change in NFκB or GluA2 expression. Finally, the changes observed after MDPV treatment could not be explained according to the autoregulatory loop between ΔFosB and the epigenetic repressor G9a described for cocaine. This provides new knowledge about the neuroadaptive changes involved in the vulnerability to psychostimulant addiction.
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Affiliation(s)
- L Duart-Castells
- Department of Pharmacology and Therapeutic Chemistry, Pharmacology Section and Institute of Biomedicine (IBUB), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - R López-Arnau
- Department of Pharmacology and Therapeutic Chemistry, Pharmacology Section and Institute of Biomedicine (IBUB), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - M Buenrostro-Jáuregui
- Department of Pharmacology and Therapeutic Chemistry, Pharmacology Section and Institute of Biomedicine (IBUB), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain; Neuroscience Laboratory, Department of Psychology, Universidad Iberoamericana, Mexico City, Mexico
| | - P Muñoz-Villegas
- Department of Pharmacology and Therapeutic Chemistry, Pharmacology Section and Institute of Biomedicine (IBUB), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - O Valverde
- Neurobiology of Behavior Research Group (GReNeC-NeuroBio), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - J Camarasa
- Department of Pharmacology and Therapeutic Chemistry, Pharmacology Section and Institute of Biomedicine (IBUB), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - D Pubill
- Department of Pharmacology and Therapeutic Chemistry, Pharmacology Section and Institute of Biomedicine (IBUB), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - E Escubedo
- Department of Pharmacology and Therapeutic Chemistry, Pharmacology Section and Institute of Biomedicine (IBUB), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain.
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19
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Choi JK, Lim G, Chen YCI, Jenkins BG. Abstinence to chronic methamphetamine switches connectivity between striatal, hippocampal and sensorimotor regions and increases cerebral blood volume response. Neuroimage 2018. [PMID: 29518566 DOI: 10.1016/j.neuroimage.2018.02.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
Methamphetamine (meth), and other psychostimulants such as cocaine, present a persistent problem for society with chronic users being highly prone to relapse. We show, in a chronic methamphetamine administration model, that discontinuation of drug for more than a week produces much larger changes in overall meth-induced brain connectivity and cerebral blood volume (CBV) response than changes that occur immediately following meth administration. Areas showing the largest changes were hippocampal, limbic striatum and sensorimotor cortical regions as well as brain stem areas including the pedunculopontine tegmentum (PPTg) and pontine nuclei - regions known to be important in mediating reinstatement of drug-taking after abstinence. These changes occur concomitantly with behavioral sensitization and appear to be mediated through increases in dopamine D1 and D3 and decreases in D2 receptor protein and mRNA expression. We further identify a novel region of dorsal caudate/putamen, with a low density of calbindin neurons, that has an opposite hemodynamic response to meth than the rest of the caudate/putamen and accumbens and shows very strong correlation with dorsal CA1 and CA3 hippocampus. This correlation switches following meth abstinence from CA1/CA3 to strong connections with ventral hippocampus (ventral subiculum) and nucleus accumbens. These data provide novel evidence for temporal alterations in brain connectivity where chronic meth can subvert hippocampal - striatal interactions from cognitive control regions to regions that mediate drug reinstatement. Our results also demonstrate that the signs and magnitudes of the induced CBV changes following challenge with meth or a D3-preferring agonist are a complementary read out of the relative changes that occur in D1, D2 and D3 receptors using protein or mRNA levels.
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Affiliation(s)
- Ji-Kyung Choi
- A.A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02129, USA.
| | - Grewo Lim
- Department of Anesthesiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02129, USA
| | - Yin-Ching Iris Chen
- A.A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02129, USA
| | - Bruce G Jenkins
- A.A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02129, USA.
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20
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Lencesova L, Szadvari I, Babula P, Kubickova J, Chovancova B, Lopusna K, Rezuchova I, Novakova Z, Krizanova O, Novakova M. Disruption of dopamine D1/D2 receptor complex is involved in the function of haloperidol in cardiac H9c2 cells. Life Sci 2017; 191:186-194. [PMID: 29054453 DOI: 10.1016/j.lfs.2017.10.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/16/2017] [Accepted: 10/17/2017] [Indexed: 01/11/2023]
Abstract
AIMS Haloperidol is an antipsychotic agent and acts as dopamine D2 receptor (D2R) antagonist, as a prototypical ligand of sigma1 receptors (Sig1R) and it increases expression of type 1 IP3 receptors (IP3R1). However, precise mechanism of haloperidol action on cardiomyocytes through dopaminergic signaling was not described yet. This study investigated a role of dopamine receptors in haloperidol-induced increase in IP3R1 and Sig1R, and compared physiological effect of melperone and haloperidol on basic heart parameters in rats. MATERIALS AND METHODS We used differentiated NG-108 cells and H9c2 cells. Gene expression, Western blot and immunofluorescence were used to evaluate haloperidol-induced differences; proximity ligation assay (PLA) and immunoprecipitation to determine interactions of D1/D2 receptors. To evaluate cardiac parameters, Wistar albino male rats were used. KEY FINDINGS We have shown that antagonism of D2R with either haloperidol or melperone results in upregulation of both, IP3R1 and Sig1R, which is associated with increased D2R, but reduced D1R expression. Immunofluorescence, immunoprecipitation and PLA support formation of heteromeric D1/D2 complexes in H9c2 cells. Treatment with haloperidol (but not melperone) caused decrease in systolic and diastolic blood pressure and significant increase in heart rate. SIGNIFICANCE Because D1R/D2R complexes can engage Gq-like signaling in other experimental systems, these results are consistent with the possibility that disruption of D1R/D2R complex in H9c2 cells might cause a decrease in IP3R1 activity, which in turn may account for the increase expression of IP3R and Sig1R. D2R is probably not responsible for changes in cardiac parameters, since melperone did not have any effect.
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Affiliation(s)
- L Lencesova
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - I Szadvari
- Department of Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - P Babula
- Department of Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic; International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - J Kubickova
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - B Chovancova
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - K Lopusna
- Institute of Virology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - I Rezuchova
- Institute of Virology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Z Novakova
- Department of Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - O Krizanova
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia; Department of Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
| | - M Novakova
- Department of Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic; International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.
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21
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Der-Ghazarian TS, Call T, Scott SN, Dai K, Brunwasser SJ, Noudali SN, Pentkowski NS, Neisewander JL. Effects of a 5-HT 1B Receptor Agonist on Locomotion and Reinstatement of Cocaine-Conditioned Place Preference after Abstinence from Repeated Injections in Mice. Front Syst Neurosci 2017; 11:73. [PMID: 29066957 PMCID: PMC5641409 DOI: 10.3389/fnsys.2017.00073] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 09/19/2017] [Indexed: 11/13/2022] Open
Abstract
5-HT1B receptors (5-HT1BRs) modulate behavioral effects of cocaine. Here we examined the effects of the 5-HT1BR agonist 5-propoxy-3-(1,2,3,6-tetrahydro-4-pyridinyl)-1H-pyrrolo[3,2-b]pyridine (CP94253) on spontaneous and cocaine-induced locomotion and on cocaine-primed reinstatement of conditioned place preference (CPP) in male mice given daily repeated injections of either saline or cocaine (15 mg/kg, IP) for 20 days. In the locomotor activity experiment, testing occurred both 1 and 20 days after the final injection. In the CPP experiment, mice underwent conditioning procedures while receiving the last of their daily injections, which were given either during or ≥2 h after CPP procedures. The CPP procedural timeline consisted of baseline preference testing (days 12–13 of the chronic regimen), conditioning (days 14–19, 2 daily 30-min sessions separated by 5 h), CPP test (day 21), extinction (days 22–34; no injections), CPP extinction test (day 35), and reinstatement test (day 36). Mice that had not extinguished received additional extinction sessions prior to reinstatement testing on day 42. On test days, mice were pretreated with either saline or CP94253 (10 mg/kg, IP). Testing began 30 min later, immediately after mice were primed with either saline or cocaine (5 mg/kg for locomotion; 15 mg/kg for reinstatement). We found that CP94253 increased spontaneous locomotion in mice receiving repeated injections of either saline or cocaine when tested 1 day after the last injection, but had no effect on spontaneous locomotion after 20 days abstinence from repeated injections. Surprisingly, cocaine-induced locomotion was sensitized regardless of whether the mice had received repeated saline or cocaine. CP94253 attenuated expression of the sensitized locomotion after 20 days abstinence. A control experiment in noninjected, drug-naïve mice showed that CP94253 had no effect on spontaneous or cocaine-induced locomotion. Mice reinstated cocaine-CPP when given a cocaine prime, and CP94253 pretreatment attenuated cocaine reinstatement.The findings suggest that stress from repeated saline injections and/or co-housing with cocaine-injected mice may cross-sensitize with cocaine effects on locomotion and that CP94253 attenuates these effects, as well as reinstatement of cocaine-CPP. This study supports the idea that 5-HT1BR agonists may be useful anti-cocaine medications.
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Affiliation(s)
| | - Tanessa Call
- School of Life Sciences, Arizona State University, Tempe, AZ, United States
| | - Samantha N Scott
- School of Life Sciences, Arizona State University, Tempe, AZ, United States
| | - Kael Dai
- School of Life Sciences, Arizona State University, Tempe, AZ, United States
| | | | - Sean N Noudali
- School of Life Sciences, Arizona State University, Tempe, AZ, United States
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22
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Meirsman AC, de Kerchove d'Exaerde A, Kieffer BL, Ouagazzal AM. GPR88 in A 2A receptor-expressing neurons modulates locomotor response to dopamine agonists but not sensorimotor gating. Eur J Neurosci 2017; 46:2026-2034. [PMID: 28700108 DOI: 10.1111/ejn.13646] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 07/04/2017] [Accepted: 07/05/2017] [Indexed: 11/29/2022]
Abstract
The orphan receptor, GPR88, is emerging as a key player in the pathophysiology of several neuropsychiatric diseases, including psychotic disorders. Knockout (KO) mice lacking GPR88 throughout the brain exhibit many abnormalities relevant to schizophrenia including locomotor hyperactivity, behavioural hypersensitivity to dopaminergic psychostimulants and deficient sensorimotor gating. Here, we used conditional knockout (cKO) mice lacking GPR88 selectively in striatal medium spiny neurons expressing A2A receptor to determine neuronal circuits underlying these phenotypes. We first studied locomotor responses of A2A R-Gpr88 KO mice and their control littermates to psychotomimetic, amphetamine, and to selective D1 and D2 receptor agonists, SKF-81297 and quinpirole, respectively. To assess sensorimotor gating performance, mice were submitted to acoustic and visual prepulse inhibition (PPI) paradigms. Total knockout GPR88 mice were also studied for comparison. Like total GPR88 KO mice, A2A R-Gpr88 KO mice displayed a heightened sensitivity to locomotor stimulant effects of amphetamine and SKF-81297. They also exhibited enhanced locomotor activity to quinpirole, which tended to suppress locomotion in control mice. By contrast, they had normal acoustic and visual PPI, unlike total GPR88 KO mice that show impairments across different sensory modalities. Finally, none of the genetic manipulations altered central auditory temporal processing assessed by gap-PPI. Together, these findings support the role of GPR88 in the pathophysiology of schizophrenia and show that GPR88 in A2A receptor-expressing neurons modulates psychomotor behaviour but not sensorimotor gating.
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Affiliation(s)
- A C Meirsman
- Département de Médecine Translationnelle et Neurogénétique, Institut de Génétique et de Biologie Moléculaire et Cellulaire, INSERM U-964, CNRS UMR-7104, Université de Strasbourg, Illkirch, France.,Neuroscience Paris Seine, Institut de Biologie Paris Seine, CNRS UMR 8246/INSERM U1130/Université Pierre et Marie Currie, Paris, France
| | - A de Kerchove d'Exaerde
- Laboratory of Neurophysiology, ULB Neuroscience Institute, Université Libre de Bruxelles, Bruxelles, Belgium
| | - B L Kieffer
- Département de Médecine Translationnelle et Neurogénétique, Institut de Génétique et de Biologie Moléculaire et Cellulaire, INSERM U-964, CNRS UMR-7104, Université de Strasbourg, Illkirch, France.,Department of Psychiatry, Faculty of Medicine, Douglas Research Center, McGill University, Montréal, QC, Canada
| | - A-M Ouagazzal
- Département de Médecine Translationnelle et Neurogénétique, Institut de Génétique et de Biologie Moléculaire et Cellulaire, INSERM U-964, CNRS UMR-7104, Université de Strasbourg, Illkirch, France.,Laboratoire de Neurosciences Cognitives, AMU-CNRS UMR-7291, Aix-Marseille Université, Marseille, France
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23
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Escobar AP, González MP, Meza RC, Noches V, Henny P, Gysling K, España RA, Fuentealba JA, Andrés ME. Mechanisms of Kappa Opioid Receptor Potentiation of Dopamine D2 Receptor Function in Quinpirole-Induced Locomotor Sensitization in Rats. Int J Neuropsychopharmacol 2017; 20:660-669. [PMID: 28531297 PMCID: PMC5569963 DOI: 10.1093/ijnp/pyx042] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 05/15/2017] [Accepted: 05/19/2017] [Indexed: 12/11/2022] Open
Abstract
Background Increased locomotor activity in response to the same stimulus is an index of behavioral sensitization observed in preclinical models of drug addiction and compulsive behaviors. Repeated administration of quinpirole, a D2/D3 dopamine agonist, induces locomotor sensitization. This effect is potentiated and accelerated by co-administration of U69593, a kappa opioid receptor agonist. The mechanism underlying kappa opioid receptor potentiation of quinpirole-induced locomotor sensitization remains to be elucidated. Methods Immunofluorescence anatomical studies were undertaken in mice brain slices and rat presynaptic synaptosomes to reveal kappa opioid receptor and D2R pre- and postsynaptic colocalization in the nucleus accumbens. Tonic and phasic dopamine release in the nucleus accumbens of rats repeatedly treated with U69593 and quinpirole was assessed by microdialysis and fast scan cyclic voltammetry. Results Anatomical data show that kappa opioid receptor and D2R colocalize postsynaptically in medium spiny neurons of the nucleus accumbens and the highest presynaptic colocalization occurs on the same dopamine terminals. Significantly reduced dopamine levels were observed in quinpirole, and U69593-quinpirole treated rats, explaining sensitization of D2R. Presynaptic inhibition induced by kappa opioid receptor and D2R of electrically evoked dopamine release was faster in U69593-quinpirole compared with quinpirole-repeatedly treated rats. Conclusions Pre- and postsynaptic colocalization of kappa opioid receptor and D2R supports a role for kappa opioid receptor potentiating both the D2R inhibitory autoreceptor function and the inhibitory action of D2R on efferent medium spiny neurons. Kappa opioid receptor co-activation accelerates D2R sensitization by contributing to decrease dopamine release in the nucleus accumbens.
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Affiliation(s)
- Angélica P Escobar
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Escobar, Ms González, and Drs Noches, Gysling, and Andrés); Laboratory of Neuroanatomy, Department of Anatomy and Interdisciplinary Center of Neuroscience, NeuroUC, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile (Mr Meza and Dr Henny); Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania (Dr España); Department of Pharmacy, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Fuentealba)
| | - Marcela P González
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Escobar, Ms González, and Drs Noches, Gysling, and Andrés); Laboratory of Neuroanatomy, Department of Anatomy and Interdisciplinary Center of Neuroscience, NeuroUC, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile (Mr Meza and Dr Henny); Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania (Dr España); Department of Pharmacy, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Fuentealba)
| | - Rodrigo C Meza
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Escobar, Ms González, and Drs Noches, Gysling, and Andrés); Laboratory of Neuroanatomy, Department of Anatomy and Interdisciplinary Center of Neuroscience, NeuroUC, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile (Mr Meza and Dr Henny); Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania (Dr España); Department of Pharmacy, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Fuentealba)
| | - Verónica Noches
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Escobar, Ms González, and Drs Noches, Gysling, and Andrés); Laboratory of Neuroanatomy, Department of Anatomy and Interdisciplinary Center of Neuroscience, NeuroUC, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile (Mr Meza and Dr Henny); Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania (Dr España); Department of Pharmacy, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Fuentealba)
| | - Pablo Henny
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Escobar, Ms González, and Drs Noches, Gysling, and Andrés); Laboratory of Neuroanatomy, Department of Anatomy and Interdisciplinary Center of Neuroscience, NeuroUC, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile (Mr Meza and Dr Henny); Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania (Dr España); Department of Pharmacy, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Fuentealba)
| | - Katia Gysling
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Escobar, Ms González, and Drs Noches, Gysling, and Andrés); Laboratory of Neuroanatomy, Department of Anatomy and Interdisciplinary Center of Neuroscience, NeuroUC, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile (Mr Meza and Dr Henny); Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania (Dr España); Department of Pharmacy, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Fuentealba)
| | - Rodrigo A España
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Escobar, Ms González, and Drs Noches, Gysling, and Andrés); Laboratory of Neuroanatomy, Department of Anatomy and Interdisciplinary Center of Neuroscience, NeuroUC, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile (Mr Meza and Dr Henny); Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania (Dr España); Department of Pharmacy, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Fuentealba)
| | - José A Fuentealba
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Escobar, Ms González, and Drs Noches, Gysling, and Andrés); Laboratory of Neuroanatomy, Department of Anatomy and Interdisciplinary Center of Neuroscience, NeuroUC, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile (Mr Meza and Dr Henny); Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania (Dr España); Department of Pharmacy, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Fuentealba)
| | - María E Andrés
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Escobar, Ms González, and Drs Noches, Gysling, and Andrés); Laboratory of Neuroanatomy, Department of Anatomy and Interdisciplinary Center of Neuroscience, NeuroUC, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile (Mr Meza and Dr Henny); Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania (Dr España); Department of Pharmacy, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Santiago, Chile (Dr Fuentealba)
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24
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Robison LS, Ananth M, Hadjiargyrou M, Komatsu DE, Thanos PK. Chronic oral methylphenidate treatment reversibly increases striatal dopamine transporter and dopamine type 1 receptor binding in rats. J Neural Transm (Vienna) 2017; 124:655-667. [PMID: 28116523 PMCID: PMC5400672 DOI: 10.1007/s00702-017-1680-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 01/11/2017] [Indexed: 11/29/2022]
Abstract
Previously, we created an 8-h limited-access dual bottle drinking paradigm to deliver methylphenidate (MP) to rats at two dosages that result in a pharmacokinetic profile similar to patients treated for attention deficit hyperactivity disorder. Chronic treatment resulted in altered behavior, with some effects persisting beyond treatment. In the current study, adolescent male Sprague-Dawley rats were split into three groups at four weeks of age: control (water), low-dose MP (LD), and high-dose MP (HD). Briefly, 4 mg/kg (low dose; LD) or 30 mg/kg (high dose; HD) MP was consumed during the first hour, and 10 mg/kg (LD) or 60 mg/kg (HD) MP during hours two through eight. Following three months of treatment, half of the rats in each group (n = 8-9/group) were euthanized, and remaining rats went through a 1-month abstinence period, then euthanized. In vitro receptor autoradiography was performed to quantify binding levels of dopamine transporter (DAT), dopamine type 1 (D1R)-like receptors, and dopamine type 2 (D2R)-like receptors using [3H] WIN35,428, [3H] SCH23390, and [3H] Spiperone, respectively. Immediately following treatment, HD MP-treated rats had increased DAT and D1R-like binding in several subregions of the basal ganglia, particularly more caudal portions of the caudate putamen, which correlated with some previously reported behavioral changes. There were no differences between treatment groups in any measure following abstinence. These findings suggest that chronic treatment with a clinically relevant high dose of MP results in reversible changes in dopamine neurochemistry, which may underlie some effects on behavior.
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Affiliation(s)
- Lisa S Robison
- Department of Psychology, Stony Brook University, 100 Nicolls Road, Stony Brook, NY, 11794, USA
| | - Mala Ananth
- Department of Neurobiology, Stony Brook University, 100 Nicolls Road, Stony Brook, NY, 11794, USA
| | - Michael Hadjiargyrou
- Department of Life Sciences, New York Institute of Technology, Northern Boulevard, P.O. Box 8000, Old Westbury, NY, 11568, USA
| | - David E Komatsu
- Department of Orthopedics, Stony Brook University, 100 Nicolls Road, Stony Brook, NY, 11794, USA
| | - Panayotis K Thanos
- Behavioral Neuropharmacology and Neuroimaging Laboratory On Addictions, Research Institute On Addictions, University at Buffalo, 1021 Main St, Buffalo, NY, 14203, USA.
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25
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López-Arnau R, Luján MA, Duart-Castells L, Pubill D, Camarasa J, Valverde O, Escubedo E. Exposure of adolescent mice to 3,4-methylenedioxypyrovalerone increases the psychostimulant, rewarding and reinforcing effects of cocaine in adulthood. Br J Pharmacol 2017; 174:1161-1173. [PMID: 28262947 DOI: 10.1111/bph.13771] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 02/21/2017] [Accepted: 02/24/2017] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND AND PURPOSE 3,4-Methylenedioxypyrovalerone (MDPV) is a synthetic cathinone with powerful psychostimulant effects. It selectively inhibits the dopamine transporter (DAT) and is 10-50-fold more potent as a DAT blocker than cocaine, suggesting a high abuse liability. The main objective of the present study was to assess the consequences of an early (adolescence) MDPV exposure on the psychostimulant, rewarding and reinforcing effects induced by cocaine in adult mice. EXPERIMENTAL APPROACH Twenty-one days after MDPV pretreatment (1.5 mg·kg-1 , s.c., twice daily for 7 days), adult mice were tested with cocaine, using locomotor activity, conditioned place preference and self-administration (SA) paradigms. In parallel, dopamine D2 receptor density and the expression of c-Fos and ΔFosB in the striatum were determined. KEY RESULTS MDPV treatment enhanced the psychostimulant and conditioning effects of cocaine. Acquisition of cocaine SA was unchanged in mice pretreated with MDPV, whereas the breaking point achieved under a progressive ratio programme and reinstatement after extinction were higher in this group of mice. MDPV decreased D2 receptor density but increased ΔFosB expression three-fold. As expected, acute cocaine increased c-Fos expression, but MDPV pretreatment negatively influenced its expression. ΔFosB accumulation declined during MDPV withdrawal, although it remained elevated in adult mice when tested for cocaine effects. CONCLUSION AND IMPLICATIONS MDPV exposure during adolescence induced long-lasting adaptive changes related to enhanced responsiveness to cocaine in the adult mice that seems to lead to a higher vulnerability to cocaine abuse. This particular behaviour correlated with increased expression of ΔFosB.
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Affiliation(s)
- R López-Arnau
- Department of Pharmacology and Therapeutic Chemistry, Pharmacology Section and Institute of Biomedicine (IBUB), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - M A Luján
- Neurobiology of Behaviour Research Group (GReNeC-NeuroBio), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - L Duart-Castells
- Department of Pharmacology and Therapeutic Chemistry, Pharmacology Section and Institute of Biomedicine (IBUB), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - D Pubill
- Department of Pharmacology and Therapeutic Chemistry, Pharmacology Section and Institute of Biomedicine (IBUB), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - J Camarasa
- Department of Pharmacology and Therapeutic Chemistry, Pharmacology Section and Institute of Biomedicine (IBUB), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - O Valverde
- Neurobiology of Behaviour Research Group (GReNeC-NeuroBio), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain.,Neuroscience Research Programme, IMIM-Hospital del Mar Research Institute, Barcelona, Spain
| | - E Escubedo
- Department of Pharmacology and Therapeutic Chemistry, Pharmacology Section and Institute of Biomedicine (IBUB), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
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Guarraci FA, Meerts SH. Does Practice Make Perfect? Sexual Experience and Psychomotor Stimulants Influence Female Sexual Motivation Through Medial Preoptic Area Dopamine. CURRENT SEXUAL HEALTH REPORTS 2017. [DOI: 10.1007/s11930-017-0102-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Unique Behavioral and Neurochemical Effects Induced by Repeated Adolescent Consumption of Caffeine-Mixed Alcohol in C57BL/6 Mice. PLoS One 2016; 11:e0158189. [PMID: 27380261 PMCID: PMC4933367 DOI: 10.1371/journal.pone.0158189] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 06/10/2016] [Indexed: 02/06/2023] Open
Abstract
The number of highly caffeinated products has increased dramatically in the past few years. Among these products, highly caffeinated energy drinks are the most heavily advertised and purchased, which has resulted in increased incidences of co-consumption of energy drinks with alcohol. Despite the growing number of adolescents and young adults reporting caffeine-mixed alcohol use, knowledge of the potential consequences associated with co-consumption has been limited to survey-based results and in-laboratory human behavioral testing. Here, we investigate the effect of repeated adolescent (post-natal days P35-61) exposure to caffeine-mixed alcohol in C57BL/6 mice on common drug-related behaviors such as locomotor sensitivity, drug reward and cross-sensitivity, and natural reward. To determine changes in neurological activity resulting from adolescent exposure, we monitored changes in expression of the transcription factor ΔFosB in the dopaminergic reward pathway as a sign of long-term increases in neuronal activity. Repeated adolescent exposure to caffeine-mixed alcohol exposure induced significant locomotor sensitization, desensitized cocaine conditioned place preference, decreased cocaine locomotor cross-sensitivity, and increased natural reward consumption. We also observed increased accumulation of ΔFosB in the nucleus accumbens following repeated adolescent caffeine-mixed alcohol exposure compared to alcohol or caffeine alone. Using our exposure model, we found that repeated exposure to caffeine-mixed alcohol during adolescence causes unique behavioral and neurochemical effects not observed in mice exposed to caffeine or alcohol alone. Based on similar findings for different substances of abuse, it is possible that repeated exposure to caffeine-mixed alcohol during adolescence could potentially alter or escalate future substance abuse as means to compensate for these behavioral and neurochemical alterations.
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Dopamine-dependent CB1 receptor dysfunction at corticostriatal synapses in homozygous PINK1 knockout mice. Neuropharmacology 2016; 101:460-70. [DOI: 10.1016/j.neuropharm.2015.10.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Revised: 10/07/2015] [Accepted: 10/16/2015] [Indexed: 11/18/2022]
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29
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Escobar AP, Cornejo FA, Olivares-Costa M, González M, Fuentealba JA, Gysling K, España RA, Andrés ME. Reduced dopamine and glutamate neurotransmission in the nucleus accumbens of quinpirole-sensitized rats hints at inhibitory D2 autoreceptor function. J Neurochem 2015; 134:1081-90. [PMID: 26112331 DOI: 10.1111/jnc.13209] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Revised: 06/02/2015] [Accepted: 06/16/2015] [Indexed: 11/28/2022]
Abstract
Dopamine from the ventral tegmental area and glutamate from several brain nuclei converge in the nucleus accumbens (NAc) to drive motivated behaviors. Repeated activation of D2 receptors with quinpirole (QNP) induces locomotor sensitization and compulsive behaviors, but the mechanisms are unknown. In this study, in vivo microdialysis and fast scan cyclic voltammetry in adult anesthetized rats were used to investigate the effect of repeated QNP on dopamine and glutamate neurotransmission within the NAc. Following eight injections of QNP, a significant decrease in phasic and tonic dopamine release was observed in rats that displayed locomotor sensitization. Either a systemic injection or the infusion of QNP into the NAc decreased dopamine release, and the extent of this effect was similar in QNP-sensitized and control rats, indicating that inhibitory D2 autoreceptor function is maintained despite repeated activation of D2 receptors and decreased dopamine extracellular levels. Basal extracellular levels of glutamate in the NAc were also significantly lower in QNP-treated rats than in controls. Moreover, the increase in NAc glutamate release induced by direct stimulation of medial prefrontal cortex was significantly lower in QNP-sensitized rats. Together, these results indicate that repeated activation of D2 receptors disconnects NAc from medial prefrontal cortex and ventral tegmental area. Repeated administration of the dopamine D2 receptor agonist quinpirole (QNP) induces locomotor sensitization. We found that the NAc of QNP-sensitized rats has reduced glutamate levels coming from prefrontal cortex together with a decreased phasic and tonic dopamine neurotransmission but a conserved presynaptic D2 receptor function. We suggest that locomotor sensitization is because of increased affinity state of D2 post-synaptic receptors.
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Affiliation(s)
- Angélica P Escobar
- Millennium Science Nucleus in Stress and Addiction, Pontificia Universidad Católica de Chile, Santiago, Chile.,Department of Cellular and Molecular Biology, Faculty of Biological Science, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Francisca A Cornejo
- Millennium Science Nucleus in Stress and Addiction, Pontificia Universidad Católica de Chile, Santiago, Chile.,Department of Cellular and Molecular Biology, Faculty of Biological Science, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Montserrat Olivares-Costa
- Millennium Science Nucleus in Stress and Addiction, Pontificia Universidad Católica de Chile, Santiago, Chile.,Department of Cellular and Molecular Biology, Faculty of Biological Science, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Marcela González
- Millennium Science Nucleus in Stress and Addiction, Pontificia Universidad Católica de Chile, Santiago, Chile.,Department of Cellular and Molecular Biology, Faculty of Biological Science, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José A Fuentealba
- Millennium Science Nucleus in Stress and Addiction, Pontificia Universidad Católica de Chile, Santiago, Chile.,Department of Pharmacy, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Katia Gysling
- Millennium Science Nucleus in Stress and Addiction, Pontificia Universidad Católica de Chile, Santiago, Chile.,Department of Cellular and Molecular Biology, Faculty of Biological Science, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rodrigo A España
- Department Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA
| | - María E Andrés
- Millennium Science Nucleus in Stress and Addiction, Pontificia Universidad Católica de Chile, Santiago, Chile.,Department of Cellular and Molecular Biology, Faculty of Biological Science, Pontificia Universidad Católica de Chile, Santiago, Chile
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Claussen CM, Witte LJ, Dafny N. Single exposure of dopamine D1 antagonist prevents and D2 antagonist attenuates methylphenidate effect. J Exp Pharmacol 2015; 7:1-9. [PMID: 27186140 PMCID: PMC4863529 DOI: 10.2147/jep.s75300] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Methylphenidate (MPD) is a readily prescribed drug for the treatment of attention deficit hyperactivity disorder (ADHD) and moreover is used illicitly by youths for its cognitive-enhancing effects and recreation. MPD exposure in rodents elicits increased locomotor activity. Repetitive MPD exposure leads to further augmentation of their locomotor activity. This behavioral response is referred to as behavioral sensitization. Behavioral sensitization is used as an experimental marker for a drug’s ability to elicit dependence. There is evidence that dopamine (DA) is a key player in the acute and chronic MPD effect; however, the role of DA in the effects elicited by MPD is still debated. The objective of this study was to investigate the role of D1 and/or D2 DA receptors in the acute and chronic effect of MPD on locomotor activity. The study lasted for 12 consecutive days. Seven groups of male Sprague Dawley® rats were used. A single D1 or D2 antagonist was given before and after acute and chronic MPD administration. Single injection of D1 DA antagonist was able to significantly attenuate the locomotor activity when given prior to the initial MPD exposure and after repetitive MPD exposure, while the D2 DA antagonist partially attenuated the locomotor activity only when given before the second MPD exposure. The results show the role, at least in part, of the D1 DA receptor in the mechanism of behavioral sensitization, whereas the D2 DA receptor only partially modulates the response to acute and chronic MPD.
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Affiliation(s)
- Catherine M Claussen
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center Medical School at Houston, Houston, TX, USA
| | - Lindsey J Witte
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center Medical School at Houston, Houston, TX, USA
| | - Nachum Dafny
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center Medical School at Houston, Houston, TX, USA
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31
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Li J, Zhang L, Chen Z, Xie M, Huang L, Xue J, Liu Y, Liu N, Guo F, Zheng Y, Kong J, Zhang L, Zhang L. Cocaine activates Rac1 to control structural and behavioral plasticity in caudate putamen. Neurobiol Dis 2015; 75:159-76. [PMID: 25595128 DOI: 10.1016/j.nbd.2014.12.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 11/19/2014] [Accepted: 12/18/2014] [Indexed: 12/24/2022] Open
Abstract
Repeated exposure to cocaine was previously found to cause sensitized behavioral responses and structural remodeling on medium spiny neurons of the nucleus accumbens (NAc) and caudate putamen (CPu). Rac1 has emerged as a key integrator of environmental cues that regulates dendritic cytoskeletons. In this study, we investigated the role of Rac1 in cocaine-induced dendritic and behavioral plasticity in the CPu. We found that Rac1 activation was reduced in the NAc but increased in the CPu following repeated cocaine treatment. Inhibition of Rac1 activity by a Rac1-specific inhibitor NSC23766, overexpression of a dominant negative mutant of Rac1 (T17N-Rac1) or local knockout of Rac1 attenuated the cocaine-induced increase in dendrites and spine density in the CPu, whereas overexpression of a constitutively active Rac1 exert the opposite effect. Moreover, NSC23766 reversed the increased number of asymmetric spine synapses in the CPu following chronic cocaine exposure. Downregulation of Rac1 activity likewise attenuates behavioral reward responses to cocaine exposure, with activation of Rac1 producing the opposite effect. Thus, Rac1 signaling is differentially regulated in the NAc and CPu after repeated cocaine treatment, and induction of Rac1 activation in the CPu is important for cocaine exposure-induced dendritic remodeling and behavioral plasticity.
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Affiliation(s)
- Juan Li
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Pathophysiology, Southern Medical University, Guangzhou 510515, China; Department of Histology and Embryology, Southern Medical University, Guangzhou 510515, China
| | - Lei Zhang
- Department of Histology and Embryology, Southern Medical University, Guangzhou 510515, China
| | - Zhenzhong Chen
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Pathophysiology, Southern Medical University, Guangzhou 510515, China
| | - Minjuan Xie
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Pathophysiology, Southern Medical University, Guangzhou 510515, China
| | - Lu Huang
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Pathophysiology, Southern Medical University, Guangzhou 510515, China
| | - Jinhua Xue
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Pathophysiology, Southern Medical University, Guangzhou 510515, China
| | - Yutong Liu
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Pathophysiology, Southern Medical University, Guangzhou 510515, China
| | - Nuyun Liu
- Elderly Health Services Research Center, Southern Medical University, Guangzhou 510515, China
| | - Fukun Guo
- Division of Experimental Hematology and Cancer Biology, Children's Hospital Research Foundation, Cincinnati, OH, USA
| | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Children's Hospital Research Foundation, Cincinnati, OH, USA
| | - Jiming Kong
- Southern Medical University-University of Manitoba Geriatric Medicine Joint Laboratory, Guangzhou 510515, China
| | - Lin Zhang
- Department of Histology and Embryology, Southern Medical University, Guangzhou 510515, China.
| | - Lu Zhang
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Pathophysiology, Southern Medical University, Guangzhou 510515, China; Elderly Health Services Research Center, Southern Medical University, Guangzhou 510515, China; Southern Medical University-University of Manitoba Geriatric Medicine Joint Laboratory, Guangzhou 510515, China.
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32
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Puig S, Marie N, Benturquia N, Noble F. Influence of cocaine administration patterns on dopamine receptor regulation. Psychopharmacology (Berl) 2014; 231:3131-7. [PMID: 24557089 DOI: 10.1007/s00213-014-3488-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 02/05/2014] [Indexed: 11/28/2022]
Abstract
RATIONALE Chronic exposure to drugs of abuse induces important modifications on neuronal systems. Increasing evidence shows that the consequences to chronic cocaine exposure can be different depending on the administration pattern. OBJECTIVES The aim of the present study was to evaluate the consequences of two cocaine administration patterns on dopaminergic receptor regulation. METHODS Male Sprague-Dawley rats were injected with cocaine (20 mg/kg, i.p.) for 14 days according to an intermittent (one daily injection) or a binge (three daily injections) pattern. By autoradiography, we compared the modifications of dopamine D1 and D2 receptor densities in the dopaminergic systems (mesocorticolimbic and nigrostriatal) 1 (WD1) and 14 (WD14) days after the last cocaine injection. RESULTS On WD1, we observed modifications of D1 receptors after the binge cocaine treatment pattern while no modification was observed after the intermittent pattern, suggesting that multiple daily injections are needed to induce early D1 receptor modifications. On the contrary, densities of the D2 receptors were modified by both cocaine administration patterns, and interestingly, they were opposite depending on the administration pattern. On WD14, we observed different modifications of D1 and D2 receptors depending on the administration pattern, suggesting that the cocaine administration pattern promoted long-term regulations of the dopaminergic system. CONCLUSION Two cocaine administration patterns induce different modifications of the dopaminergic receptor densities.
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Affiliation(s)
- Stéphanie Puig
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 8206, Paris, France
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Hernandez G, Oleson EB, Gentry RN, Abbas Z, Bernstein DL, Arvanitogiannis A, Cheer JF. Endocannabinoids promote cocaine-induced impulsivity and its rapid dopaminergic correlates. Biol Psychiatry 2014; 75:487-98. [PMID: 24138924 PMCID: PMC3943889 DOI: 10.1016/j.biopsych.2013.09.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 08/13/2013] [Accepted: 09/06/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND Impaired decision making, a hallmark of addiction, is hypothesized to arise from maladaptive plasticity in the mesolimbic dopamine pathway. The endocannabinoid system modulates dopamine activity through activation of cannabinoid type 1 receptors (CB1Rs). Here, we investigated whether impulsive behavior observed following cocaine exposure requires CB1R activation. METHODS We trained rats in a delay-discounting task. Following acquisition of stable performance, rats were exposed to cocaine (10 mg/kg, intraperitoneal) every other day for 14 days and locomotor activity was measured. Two days later, delay-discounting performance was re-evaluated. To assess reversal of impulsivity, injections of a CB1R antagonist (1.5 mg/kg, intraperitoneal) or vehicle were given 30 minutes before the task. During the second experiment, aimed at preventing impulsivity rather than reversing it, CB1Rs were antagonized before each cocaine injection. In this experiment, subsecond dopamine release was measured in the nucleus accumbens during delay-discounting sessions before and after cocaine treatment. RESULTS Blockade of CB1Rs reversed and prevented cocaine-induced impulsivity. Electrochemical results showed that during baseline and following disruption of endocannabinoid signaling, there was a robust increase in dopamine for immediate large rewards compared with immediate small rewards, but this effect reversed when the delay for the large reward was 10 seconds. In contrast, dopamine release always increased for one-pellet options at minimal or moderate delays in vehicle-treated rats. CONCLUSIONS Endocannabinoids play a critical role in changes associated with cocaine exposure. Cannabinoid type 1 receptor blockade may thus counteract maladaptive alterations in afferents to dopamine neurons, thereby preventing changes in dopaminergic activity underlying a loss of self-control.
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Affiliation(s)
| | - Erik B. Oleson
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, (Baltimore-Maryland)
| | - Ronny N. Gentry
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, (Baltimore-Maryland)
| | - Zarish Abbas
- Center for Studies in Behavioral Neurobiology, Concordia University (Montréal-Quebec)
| | - David L. Bernstein
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, (Baltimore-Maryland)
| | - A. Arvanitogiannis
- Center for Studies in Behavioral Neurobiology, Concordia University (Montréal-Quebec)
| | - Joseph F. Cheer
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, (Baltimore-Maryland),Department of Psychiatry, University of Maryland School of Medicine, (Baltimore-Maryland),Corresponding Author: 20 Penn Street, Baltimore MD, 21201. Phone: (410) 706 0112/Fax: (410) 706 2512.
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34
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Zhou J, Goldberg EM, Leu NA, Zhou L, Coulter DA, Wang PJ. Respiratory failure, cleft palate and epilepsy in the mouse model of human Xq22.1 deletion syndrome. Hum Mol Genet 2014; 23:3823-9. [PMID: 24569167 DOI: 10.1093/hmg/ddu095] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Chromosomal segmental deletion is a frequent cause of human diseases. A familial 1.1 Mb deletion of human chromosome Xq22.1 associates with epilepsy, cleft palate and developmental defects in heterozygous female patients. Here, we describe a mouse mutant with a targeted deletion of the syntenic segment of the mouse X chromosome that phenocopies the human syndrome. Male mice with a deletion of a 1.1 Mb Nxf2-Nxf3 X-chromosomal segment exhibit respiratory failure, neonatal lethality and cleft palate. In female mice, heterozygosity for the deletion manifests cleft palate, early postnatal lethality, postnatal growth delay and spontaneous seizures in surviving animals, apparently due to X-chromosome inactivation. Furthermore, loss of a 0.35 Mb subregion containing Armcx5, Gprasp1, Gprasp2 and Bhlhb9 is sufficient to cause the Xq22.1 syndrome phenotype. Our results support that the 1.1 Mb deletion of human Xq22.1 is the genetic cause of the associated syndrome.
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Affiliation(s)
- Jian Zhou
- Department of Animal Biology, University of Pennsylvania School of Veterinary Medicine, 3800 Spruce Street, Philadelphia, PA 19104, USA and
| | - Ethan M Goldberg
- The Children's Hospital of Philadelphia, Division of Neurology, Colket Translational Research Building, 3501 Civic Center Boulevard, Philadelphia, PA 19104-4399, USA
| | - N Adrian Leu
- Department of Animal Biology, University of Pennsylvania School of Veterinary Medicine, 3800 Spruce Street, Philadelphia, PA 19104, USA and
| | - Lei Zhou
- The Children's Hospital of Philadelphia, Division of Neurology, Colket Translational Research Building, 3501 Civic Center Boulevard, Philadelphia, PA 19104-4399, USA
| | - Douglas A Coulter
- The Children's Hospital of Philadelphia, Division of Neurology, Colket Translational Research Building, 3501 Civic Center Boulevard, Philadelphia, PA 19104-4399, USA
| | - P Jeremy Wang
- Department of Animal Biology, University of Pennsylvania School of Veterinary Medicine, 3800 Spruce Street, Philadelphia, PA 19104, USA and
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Inhibitory modulation of CART peptides in accumbal neuron through decreasing interaction of CaMKIIα with dopamine D3 receptors. Brain Res 2014; 1557:101-10. [PMID: 24560901 DOI: 10.1016/j.brainres.2014.02.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 01/20/2014] [Accepted: 02/12/2014] [Indexed: 11/20/2022]
Abstract
Previous studies in rats have shown that microinjections of cocaine- and amphetamine-regulated transcript (CART) peptide into the nucleus accumbens (NAc; the area of the brain that mediates drug reward and reinforcement) attenuate the locomotor effects of psychostimulants. CART peptide has also been shown to induce decreased intracellular concentrations of calcium (Ca(2+)) in primary cultures of hippocampus neurons. The purpose of this study was to characterize the interaction of Ca(2+)/calmodulin-dependent kinases (CaMKIIα) with dopamine D3 (D3) receptors (R) in primary cultures of accumbal neurons. This interaction is involved in inhibitory modulation of CART peptides. In vitro, CART (55-102) peptide (0.1, 0.5 or 1μM) was found to dose-dependently inhibit K(+) depolarization-elicited Ca(2+) influx and CaMKIIα phosphorylation in accumbal neurons. Moreover, CART peptides were also found to block cocaine (1μM)-induced Ca(2+) influx, CaMKIIα phosphorylation, CaMKIIα-D3R interaction, and CREB phosphorylation. In vivo, repeated microinjections of CART (55-102) peptide (2μg/1μl/side) into the NAc over a 5-day period had no effect on behavioral activity but blocked cocaine-induced locomotor activity. These results indicate that D3R function in accumbal neurons is a target of CART (55-102) peptide and suggest that CART peptide by dephosphorylating limbic D3Rs may have potential as a treatment for cocaine abuse.
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Dopamine receptor dysregulation in hippocampus of aged rats underlies chronic pulsatile L-Dopa treatment induced cognitive and emotional alterations. Neuropharmacology 2013; 82:88-100. [PMID: 24291463 DOI: 10.1016/j.neuropharm.2013.11.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 11/11/2013] [Accepted: 11/19/2013] [Indexed: 12/29/2022]
Abstract
L-Dopa is the major symptomatic therapy for Parkinson's disease, which commonly occurs in elderly patients. However, the effects of chronic use on mood and cognition in old subjects remain elusive. In order to compare the effects of a chronic pulsatile L-Dopa treatment on emotional and cognitive functions in young (3 months) and old (18 months) intact rats, an L-Dopa/carbidopa treatment was administered every 12 h over 4 weeks. Rats were assessed for behavioural despair (repeated forced swimming test, RFST), anhedonia (sucrose preference test, SPT) and spatial learning (Morris water maze, MWM) in the late phase of treatment (T). Neuronal expression of Fos in the hippocampus at the early and late phases of T, as well as after MWM was studied. The density and ratio of dopamine D5r, D3r and D2r receptors were also evaluated in the hippocampus using immunohistochemistry and confocal microscopy. Young rats showed similar patterns during behavioural tests, whereas aged treated rats showed increased immobility counts in RFST, diminished sucrose liquid intake in SPT, and spatial learning impairment during MWM. Fos expression was significantly blunted in the aged treated group after MWM. The density of D5r, D3r and D2r was increased in both aged groups. The treatment reduced the ratio of D5r/D3r and D5r/D2r in both groups. Moreover, aged treated subjects had significant lower values of D5r/D3r and higher values of D5r/D2r when compared with young treated subjects. These results indicate that chronic L-Dopa treatment in itself could trigger emotional and cognitive dysfunctions in elderly subjects through dopamine receptor dysregulation.
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Chronic cocaine dampens dopamine signaling during cocaine intoxication and unbalances D1 over D2 receptor signaling. J Neurosci 2013; 33:15827-36. [PMID: 24089490 DOI: 10.1523/jneurosci.1935-13.2013] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Dopamine increases triggered by cocaine and consequent stimulation of dopamine receptors (including D1 and D2) are associated with its rewarding effects. However, while facilitation of D1 receptor (D1R) signaling enhances the rewarding effects of cocaine, facilitation of D2R signaling decreases it, which indicates that for cocaine to be rewarding it must result in a predominance of D1R over D2R signaling. Moreover, the transition to compulsive cocaine intake might result from an imbalance between D1R and D2R signaling. To test the hypothesis that chronic cocaine use unbalances D1R over D2R signaling during cocaine intoxication, we used microprobe optical imaging to compare dynamic changes in intracellular calcium ([Ca(2+)]i, marker of neuronal activation) to acute cocaine in striatal D1R-EGFP and D2R-EGFP-expressing neurons between control and chronically treated mice. Chronic cocaine attenuated responses to acute cocaine in D1R (blunting Ca(2+) increases by 67 ± 16%) and D2R (blunting Ca(2+) decrease by 72 ± 17%) neurons in most D1R and D2R neurons (~75%). However, the dynamics of this attenuation during cocaine intoxication was longer lasting for D2R than for D1R. Thus, whereas control mice showed a fast but short-lasting predominance of D1R over D2R signaling (peaking at ~8 min) during acute cocaine intoxication, in chronically treated mice D1R predominance was sustained for >30 min (throughout the measurement period). Thus, chronic cocaine use dramatically reduced cocaine-induced DA signaling, shifting the balance between D1R and D2R signaling during intoxication to a predominance of D1R (stimulatory) over D2R (inhibitory) signaling, which might facilitate compulsive intake in addiction.
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Loss of D2 dopamine receptor function modulates cocaine-induced glutamatergic synaptic potentiation in the ventral tegmental area. J Neurosci 2013; 33:12329-36. [PMID: 23884939 DOI: 10.1523/jneurosci.0809-13.2013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Potentiation of glutamate responses is a critical synaptic response to cocaine exposure in ventral tegmental area (VTA) neurons. However, the mechanism by which cocaine exposure promotes potentiation of NMDA receptors (NMDARs) and subsequently AMPA receptors (AMPARs) is not fully understood. In this study we demonstrate that repeated cocaine treatment causes loss of D2 dopamine receptor functional responses via interaction with lysosome-targeting G-protein-associated sorting protein1 (GASP1). We also show that the absence of D2 downregulation in GASP1-KO mice prevents cocaine-induced potentiation of NMDAR currents, elevation of the AMPA/NMDA ratio, and redistribution of NMDAR and AMPAR subunits to the membrane. As a pharmacological parallel, coadministration of the high-affinity D2 agonist, aripiprazole, reduces not only functional downregulation of D2s in response to cocaine but also potentiation of NMDAR and AMPAR responses in wild-type mice. Together these data suggest that functional loss of D2 receptors is a critical mechanism mediating cocaine-induced glutamate plasticity in VTA neurons.
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Affiliation(s)
- Devon L. Graham
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232-6600, United States
| | - Kevin Erreger
- Department of Molecular Physiology & Biophysics, Vanderbilt University School of Medicine, Nashville, TN 37232-8548,Vanderbilt Kennedy Center, Vanderbilt University School of Medicine, Nashville, TN 37232, United States
| | - Aurelio Galli
- Department of Molecular Physiology & Biophysics, Vanderbilt University School of Medicine, Nashville, TN 37232-8548,Vanderbilt Kennedy Center, Vanderbilt University School of Medicine, Nashville, TN 37232, United States
| | - Gregg D. Stanwood
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232-6600, United States,Vanderbilt Kennedy Center, Vanderbilt University School of Medicine, Nashville, TN 37232, United States
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The glucagon-like peptide 1 analogue, exendin-4, attenuates the rewarding properties of psychostimulant drugs in mice. PLoS One 2013; 8:e69010. [PMID: 23874851 PMCID: PMC3712951 DOI: 10.1371/journal.pone.0069010] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 06/06/2013] [Indexed: 12/11/2022] Open
Abstract
Glucagon-like peptide 1 (GLP-1) is an incretine hormone that controls consummatory behavior and glucose homeostasis. It is released in response to nutrient ingestion from the intestine and production in the brain has also been identified. Given that GLP-1 receptors are expressed in reward areas, such as the nucleus accumbens and ventral tegmental area, and that common mechanisms regulate food and drug-induced reward we hypothesize that GLP-1 receptors are involved in reward regulation. Herein the effect of the GLP-1 receptor agonist Exendin-4 (Ex4), on amphetamine- and cocaine-induced activation of the mesolimbic dopamine system was investigated in mice. In a series of experiments we show that treatment with Ex4, at a dose with no effect per se, reduce amphetamine- as well as cocaine-induced locomotor stimulation, accumbal dopamine release as well as conditioned place preference in mice. Collectively these data propose a role for GLP-1 receptors in regulating drug reward. Moreover, the GLP-1 signaling system may be involved in the development of drug dependence since the rewarding effects of addictive drugs involves interferences with the mesolimbic dopamine system. Given that GLP-1 analogues, such as exenatide and liraglutide, are clinically available for treatment of type II diabetes, we propose that these should be elucidated as treatments of drug dependence.
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Davis C. From passive overeating to "food addiction": a spectrum of compulsion and severity. ISRN OBESITY 2013; 2013:435027. [PMID: 24555143 PMCID: PMC3901973 DOI: 10.1155/2013/435027] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Accepted: 04/16/2013] [Indexed: 01/17/2023]
Abstract
A psychobiological dimension of eating behaviour is proposed, which is anchored at the low end by energy intake that is relatively well matched to energy output and is reflected by a stable body mass index (BMI) in the healthy range. Further along the continuum are increasing degrees of overeating (and BMI) characterized by more severe and more compulsive ingestive behaviours. In light of the many similarities between chronic binge eating and drug abuse, several authorities have adopted the perspective that an apparent dependence on highly palatable food-accompanied by emotional and social distress-can be best conceptualized as an addiction disorder. Therefore, this review also considers the overlapping symptoms and characteristics of binge eating disorder (BED) and models of food addiction, both in preclinical animal studies and in human research. It also presents this work in the context of the modern and "toxic" food environment and therein the ubiquitous triggers for over-consumption. We complete the review by providing evidence that what we have come to call "food addiction" may simply be a more acute and pathologically dense form of BED.
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Affiliation(s)
- Caroline Davis
- Kinesiology & Health Sciences, Faculty of Health, York University, 343 Bethune College, 4700 Keele Street, Toronto, ON, Canada M3J 1P3
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42
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Navarro G, Moreno E, Bonaventura J, Brugarolas M, Farré D, Aguinaga D, Mallol J, Cortés A, Casadó V, Lluís C, Ferre S, Franco R, Canela E, McCormick PJ. Cocaine inhibits dopamine D2 receptor signaling via sigma-1-D2 receptor heteromers. PLoS One 2013; 8:e61245. [PMID: 23637801 PMCID: PMC3630156 DOI: 10.1371/journal.pone.0061245] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Accepted: 03/08/2013] [Indexed: 11/19/2022] Open
Abstract
Under normal conditions the brain maintains a delicate balance between inputs of reward seeking controlled by neurons containing the D1-like family of dopamine receptors and inputs of aversion coming from neurons containing the D2-like family of dopamine receptors. Cocaine is able to subvert these balanced inputs by altering the cell signaling of these two pathways such that D1 reward seeking pathway dominates. Here, we provide an explanation at the cellular and biochemical level how cocaine may achieve this. Exploring the effect of cocaine on dopamine D2 receptors function, we present evidence of σ1 receptor molecular and functional interaction with dopamine D2 receptors. Using biophysical, biochemical, and cell biology approaches, we discovered that D2 receptors (the long isoform of the D2 receptor) can complex with σ1 receptors, a result that is specific to D2 receptors, as D3 and D4 receptors did not form heteromers. We demonstrate that the σ1-D2 receptor heteromers consist of higher order oligomers, are found in mouse striatum and that cocaine, by binding to σ1 -D2 receptor heteromers, inhibits downstream signaling in both cultured cells and in mouse striatum. In contrast, in striatum from σ1 knockout animals these complexes are not found and this inhibition is not seen. Taken together, these data illuminate the mechanism by which the initial exposure to cocaine can inhibit signaling via D2 receptor containing neurons, destabilizing the delicate signaling balance influencing drug seeking that emanates from the D1 and D2 receptor containing neurons in the brain.
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Affiliation(s)
- Gemma Navarro
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED) and Institute of Biomedicine of the University of Barcelona (IBUB) and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Estefania Moreno
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED) and Institute of Biomedicine of the University of Barcelona (IBUB) and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Jordi Bonaventura
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED) and Institute of Biomedicine of the University of Barcelona (IBUB) and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Marc Brugarolas
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED) and Institute of Biomedicine of the University of Barcelona (IBUB) and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Daniel Farré
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED) and Institute of Biomedicine of the University of Barcelona (IBUB) and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - David Aguinaga
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED) and Institute of Biomedicine of the University of Barcelona (IBUB) and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Josefa Mallol
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED) and Institute of Biomedicine of the University of Barcelona (IBUB) and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Antoni Cortés
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED) and Institute of Biomedicine of the University of Barcelona (IBUB) and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Vicent Casadó
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED) and Institute of Biomedicine of the University of Barcelona (IBUB) and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Carmen Lluís
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED) and Institute of Biomedicine of the University of Barcelona (IBUB) and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Sergi Ferre
- National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, Department of Health and Human Services, Baltimore, Maryland, United States of America
| | - Rafael Franco
- Centro de Investigación Médica Aplicada, Universidad de Navarra, Pamplona, Spain
| | - Enric Canela
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED) and Institute of Biomedicine of the University of Barcelona (IBUB) and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Peter J. McCormick
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED) and Institute of Biomedicine of the University of Barcelona (IBUB) and Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Barcelona, Spain
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A receptor-based model for dopamine-induced fMRI signal. Neuroimage 2013; 75:46-57. [PMID: 23466936 DOI: 10.1016/j.neuroimage.2013.02.036] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 02/11/2013] [Accepted: 02/20/2013] [Indexed: 01/22/2023] Open
Abstract
This report describes a multi-receptor physiological model of the fMRI temporal response and signal magnitude evoked by drugs that elevate synaptic dopamine in basal ganglia. The model is formulated as a summation of dopamine's effects at D1-like and D2-like receptor families, which produce functional excitation and inhibition, respectively, as measured by molecular indicators like adenylate cyclase or neuroimaging techniques like fMRI. Functional effects within the model are described in terms of relative changes in receptor occupancies scaled by receptor densities and neuro-vascular coupling constants. Using literature parameters, the model reconciles many discrepant observations and interpretations of pre-clinical data. Additionally, we present data showing that amphetamine stimulation produces fMRI inhibition at low doses and a biphasic response at higher doses in the basal ganglia of non-human primates (NHP), in agreement with model predictions based upon the respective levels of evoked dopamine. Because information about dopamine release is required to inform the fMRI model, we simultaneously acquired PET (11)C-raclopride data in several studies to evaluate the relationship between raclopride displacement and assumptions about dopamine release. At high levels of dopamine release, results suggest that refinements of the model will be required to consistently describe the PET and fMRI data. Overall, the remarkable success of the model in describing a wide range of preclinical fMRI data indicate that this approach will be useful for guiding the design and analysis of basic science and clinical investigations and for interpreting the functional consequences of dopaminergic stimulation in normal subjects and in populations with dopaminergic neuroadaptations.
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Volkow ND, Wang GJ, Tomasi D, Baler RD. Unbalanced neuronal circuits in addiction. Curr Opin Neurobiol 2013; 23:639-48. [PMID: 23434063 DOI: 10.1016/j.conb.2013.01.002] [Citation(s) in RCA: 152] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 12/21/2012] [Accepted: 01/06/2013] [Indexed: 01/29/2023]
Abstract
Through sequential waves of drug-induced neurochemical stimulation, addiction co-opts the brain's neuronal circuits that mediate reward, motivation to behavioral inflexibility and a severe disruption of self-control and compulsive drug intake. Brain imaging technologies have allowed neuroscientists to map out the neural landscape of addiction in the human brain and to understand how drugs modify it.
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Affiliation(s)
- Nora D Volkow
- National Institute on Drug Abuse, National Institutes of Health, Bethesda, MD 20892, United States.
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von Zastrow M, Williams JT. Modulating neuromodulation by receptor membrane traffic in the endocytic pathway. Neuron 2012; 76:22-32. [PMID: 23040804 DOI: 10.1016/j.neuron.2012.09.022] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Cellular responsiveness to many neuromodulators is controlled by endocytosis of the transmembrane receptors that transduce their effects. Endocytic membrane trafficking of particular neuromodulator receptors exhibits remarkable diversity and specificity, determined largely by molecular sorting operations that guide receptors at trafficking branchpoints after endocytosis. In this Review, we discuss recent progress in elucidating mechanisms mediating the molecular sorting of neuromodulator receptors in the endocytic pathway. There is emerging evidence that endocytic trafficking of neuromodulator receptors, in addition to influencing longer-term cellular responsiveness under conditions of prolonged or repeated activation, may also affect the acute response. Physiological and pathological consequences of defined receptor trafficking events are only now being elucidated, but it is already apparent that endocytosis of neuromodulator receptors has a significant impact on the actions of therapeutic drugs. The present data also suggest, conversely, that mechanisms of receptor endocytosis and molecular sorting may themselves represent promising targets for therapeutic manipulation.
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Affiliation(s)
- Mark von Zastrow
- Department of Psychiatry, University of California at San Francisco, San Francisco, CA 94158, USA.
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Kargl J, Balenga NA, Platzer W, Martini L, Whistler JL, Waldhoer M. The GPCR-associated sorting protein 1 regulates ligand-induced down-regulation of GPR55. Br J Pharmacol 2012; 165:2611-9. [PMID: 21718301 PMCID: PMC3366063 DOI: 10.1111/j.1476-5381.2011.01562.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND AND PURPOSE Many GPCRs, including the CB1 cannabinoid receptor, are down-regulated following prolonged agonist exposure by interacting with the GPCR-associated sorting protein-1 (GASP-1). The CB1 receptor antagonist rimonabant has also recently been described to be an agonist at GPR55, a cannabinoid-related receptor. Here we investigated the post-endocytic properties of GPR55 after agonist exposure and tested whether GASP-1 is involved in this process. EXPERIMENTAL APPROACH We evaluated the direct protein-protein interaction of GPR55 with GASP-1 using (i) GST-binding assays and (ii) co-immunoprecipitation assays in GPR55-HEK293 cells with endogenous GASP-1 expression. We further tested the internalization, recycling and degradation of GPR55 using confocal fluorescence microscopy and biotinylation assays in the presence and absence of GASP-1 (lentiviral small hairpin RNA knockdown of GASP-1) under prolonged agonist [rimonabant (RIM), lysophosphatidylinositol (LPI)] stimulation. KEY RESULTS We showed that the prolonged activation of GPR55 with rimonabant or LPI down-regulates GPR55 via GASP-1. GASP-1 binds to GPR55 in vitro, and this interaction was required for targeting GPR55 for degradation. Disrupting the GPR55-GASP-1 interaction prevented post-endocytic receptor degradation, and thereby allowed receptor recycling. CONCLUSION AND IMPLICATIONS These data implicate GASP-1 as an important regulator of ligand-mediated down-regulation of GPR55. By identifying GASP-1 as a key regulator of the trafficking and, by extension, functional expression of GPR55, we may be one step closer to gaining a better understanding of this receptor in response to cannabinoid drugs. LINKED ARTICLES This article is part of a themed section on Cannabinoids in Biology and Medicine. To view the other articles in this section visit http://dx.doi.org/10.1111/bph.2012.165.issue-8. To view Part I of Cannabinoids in Biology and Medicine visit http://dx.doi.org/10.1111/bph.2011.163.issue-7
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Affiliation(s)
- J Kargl
- Institute for Experimental and Clinical Pharmacology, Medical University of Graz, Graz, Austria.
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Ha CM, Park D, Han JK, Jang JI, Park JY, Hwang EM, Seok H, Chang S. Calcyon forms a novel ternary complex with dopamine D1 receptor through PSD-95 protein and plays a role in dopamine receptor internalization. J Biol Chem 2012; 287:31813-22. [PMID: 22843680 DOI: 10.1074/jbc.m112.370601] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Calcyon, once known for interacting directly with the dopamine D(1) receptor (D(1)DR), is implicated in various neuropsychiatric disorders including schizophrenia, bipolar disorder, and attention deficit hyperactivity disorder. Although its direct interaction with D(1)DR has been shown to be misinterpreted, it still plays important roles in D(1)DR signaling. Here, we found that calcyon interacts with the PSD-95 and subsequently forms a ternary complex with D(1)DR through PSD-95. Calcyon is phosphorylated on Ser-169 by the PKC activator phorbol 12-myristate 13-acetate or by the D(1)DR agonist SKF-81297, and its phosphorylation increases its association with PSD-95 and recruitment to the cell surface. Interestingly, the internalization of D(1)DR at the cell surface was enhanced by phorbol 12-myristate 13-acetate and SKF-81297 in the presence of calcyon, but not in the presence of its S169A phospho-deficient mutant, suggesting that the phosphorylation of calcyon and the internalization of the surface D(1)DR are tightly correlated. Our results suggest that calcyon regulates D(1)DR trafficking by forming a ternary complex with D(1)DR through PSD-95 and thus possibly linking glutamatergic and dopamine receptor signalings. This also raises the possibility that a novel ternary complex could represent a potential therapeutic target for the modulation of related neuropsychiatric disorders.
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Affiliation(s)
- Chang Man Ha
- Department of Physiology, Seoul National University College of Medicine, Seoul, Korea.
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Li J, Liu N, Lu K, Zhang L, Gu J, Guo F, An S, Zhang L, Zhang L. Cocaine-induced dendritic remodeling occurs in both D1 and D2 dopamine receptor-expressing neurons in the nucleus accumbens. Neurosci Lett 2012; 517:118-22. [PMID: 22561554 DOI: 10.1016/j.neulet.2012.04.040] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Revised: 04/11/2012] [Accepted: 04/17/2012] [Indexed: 11/26/2022]
Abstract
Repeated exposure to cocaine can induce persistent alterations in the brain's reward system, including increases in the number of dendrites and spine density on medium-sized spiny neurons (MSNs) in the nucleus accumbens (NAc). The structural remodeling of dendrites and spines in the NAc is thought to play a critical role in cocaine addiction. MSNs in the NAc can be classified by expression of either D1 or D2 dopamine receptors, which are localized to the direct and indirect pathway, respectively. It is unknown whether the dendritic changes induced by repeated cocaine treatment occur in MSNs of the direct or indirect pathway. Because the traditional Golgi-Cox impregnation of neurons precludes identifying particular subpopulations of MSNs, we performed dendritic morphology analysis after biocytin-labeling and Golgi-Cox impregnation. We found that the biocytin staining MSNs showed higher dendritic spine density and higher number of dendrites than that in Golgi impregnation group. In addition, we found that the increasing spine density induced by repeated cocaine treatment in female mice was higher than that in male mice. Next we used biocytin staining and dynorphin/D2 receptor colocalization to determine which cell type(s) displayed dendritic changes after repeated cocaine treatment. We found that cocaine-induced changes in dendritic parameters occurred in MSNs of both the direct (D1-expressing) and indirect (D2-expressing) pathways.
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Affiliation(s)
- Juan Li
- Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
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Mishra M, Heese K. P60TRP interferes with the GPCR/secretase pathway to mediate neuronal survival and synaptogenesis. J Cell Mol Med 2012; 15:2462-77. [PMID: 21199326 PMCID: PMC3822957 DOI: 10.1111/j.1582-4934.2010.01248.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
In the present study, we show that overexpression of the G-protein-coupled receptor (GPCR)-associated sorting protein p60TRP (transcription regulator protein) in neural stem cells (NSCs) and in a transgenic mouse model modulates the phosphorylation and proteolytic processing of amyloid precursor protein (App), N-cadherin (Cdh2), presenilin (Psen) and τ protein (Mapt). Our results suggest that p60TRP is an inhibitor of Bace1 (β-site App cleaving enzyme) and Psen. We performed several apoptosis assays [Annexin-V, TdT-mediated dUTP Nick-End Labeling (TUNEL), caspase-3/7] using NSCs and PC12 cells (overexpressing p60TRP and knockdown of p60TRP) to substantiate the neuroprotective role of p60TRP. Functional analyses, both in vitro and in vivo, revealed that p60TRP promotes neurosynaptogenesis. Characterization of the cognitive function of p60TRP transgenic mice using the radial arm water maze test demonstrated that p60TRP improved memory and learning abilities. The improved cognitive functions could be attributed to increased synaptic connections and plasticity, which was confirmed by the modulation of the γ-aminobutyric acid receptor system and the elevated expression of microtubule-associated protein 2, synaptophysin and Slc17a7 (vesicle glutamate transporter, Vglut1), as well as by the inhibition of Cdh2 cleavage. In conclusion, interference with the p60TRP/ GPCR/secretase signalling pathway might be a new therapeutic target for the treatment of Alzheimer's disease (AD).
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Affiliation(s)
- Manisha Mishra
- Department of Molecular and Cell Biology, School of Biological Sciences, College of Science, Nanyang Technological University, Singapore
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50
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Perles-Barbacaru TA, Procissi D, Demyanenko AV, Jacobs RE. Quantitative pharmacologic MRI in mice. NMR IN BIOMEDICINE 2012; 25:498-505. [PMID: 21793079 PMCID: PMC3292675 DOI: 10.1002/nbm.1760] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 05/03/2011] [Accepted: 05/19/2011] [Indexed: 05/31/2023]
Abstract
Pharmacologic MRI (phMRI) uses functional MRI techniques to provide a noninvasive in vivo measurement of the hemodynamic effects of drugs. The cerebral blood volume change (ΔCBV) serves as a surrogate for neuronal activity via neurovascular coupling mechanisms. By assessing the location and time course of brain activity in mouse mutant studies, phMRI can provide valuable insights into how different behavioral phenotypes are expressed in deferring brain activity response to drug challenge. In this report, we evaluate the utility of three different intravascular ultrasmall superparamagnetic iron oxide (USPIO) contrast agents for phMRI using a gradient-echo technique, with temporal resolution of one min at high magnetic field. The tissue half-life of the USPIOs was studied using a nonlinear detrending model. The three USPIOs are candidates for CBV weighted phMRI experiments, with r(2)/r(1) ratios ≥ 20 and apparent half-lives ≥ 1.5 h at the described doses. An echo-time of about 10 ms or longer results in a functional contrast to noise ratio (fCNR) > 75 after USPIO injection, with negligible decrease between 1.5-2 h. phMRI experiments were conducted at 7 T using cocaine as a psychotropic substance and acetazolamide, a global vasodilator, as a positive control. Cocaine acts as a dopamine-serotonin-norepinephrine reuptake inhibitor, increasing extracellular concentrations of these neurotransmitters, and thus increasing dopaminergic, serotonergic and noradrenergic neurotransmission. phMRI results showed that CBV was reduced in the normal mouse brain after cocaine challenge, with the largest effects in the nucleus accumbens, whereas after acetazolamide, blood volume was increased in both cerebral and extracerebral tissue.
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Affiliation(s)
| | - Daniel Procissi
- Biological Imaging Center, Beckman Institute, California Institute of Technology, Pasadena, CA 91125
| | - Andrey V. Demyanenko
- Biological Imaging Center, Beckman Institute, California Institute of Technology, Pasadena, CA 91125
| | - Russell E. Jacobs
- Biological Imaging Center, Beckman Institute, California Institute of Technology, Pasadena, CA 91125
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