DOCSLIB.ORG

Alcohol” Properties of the Positive Allosteric Modulators

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Alcohol” Properties of the Positive Allosteric Modulators “Anti-alcohol” properties of the positive allosteric modulators of the GABAB receptor Giancarlo Colombo CNR Neuroscience Institute Cagliari, Italy [email protected] “Anti-alcohol” properties of baclofen GABA, Baclofen Baclofen-induced suppression of alcohol self- administration in sP rats 160 Alcohol 140 120 100 80 60 Cryan & Kaupmann, 2005 40 Total responses * Lever responsesLever 20 Non-sedative doses of baclofen suppress: 0 0 1.7 3 • Regular alcohol drinking behavior in rats 0,8 • Relapse-like drinking in rats 0,7 • Binge-like drinking in rats and mice 0,6 0,5 administered • Operant alcohol self-administration in rats and - 0,4 mice (reinforcing and motivational properties) 0,3 • Reinstatement of alcohol-seeking behavior in rats (g/kg) alcohol 0,2 * 0,1 Amount self of Amount • Development of conditioned place preference to intake(g/kg) alcohol Total 0,0 alcohol in mice 0 1.7 3 • Alcohol-stimulated motor activity in rats and mice Baclofen Extension to the positive allosteric modulators (PAMs) of the GABAB receptor of the “anti-alcohol” properties of baclofen GABA, Baclofen PAMs Cryan & Kaupmann, 2005 GABAB PAMs: a new generation of GABAB receptor ligands • The discovery of a positive allosteric modulatory binding site in the structure of the GABAB receptor, together with the synthesis of in vivo effective ligands, offer a novel mechanism for pharmacological manipulation of the GABAB receptor • GABAB PAMs bind to a distinct site from the orthosteric agonist binding site, and are devoid of intrinsic agonistic activity in the absence of GABA • Thus, PAMs activate the GABAB receptor in vivo in a more “physiological” way than agonists, as they do not perturb receptor signaling on their own, but potentiate the effect of GABA only where and when it is endogenously released Presently available, in vivo effective positive allosteric modulators of the GABAB receptor CGP7930 2,6-Di-tert-butyl-4-(3-hydroxy-2,2-dimethyl-propyl)-phenol GS39783 N,N'-dicyclopentyl-2-methylsulfanyl-5-nitro-pyrimidine-4,6-diamine BHF177 N-[(1R,2R,4S)-bicyclo[2.2.1]hept-2-yl]-2-methyl-5-[4-(trifluoromethyl)phenyl]-4- pyrimidinamine rac-BHFF (R,S)-5,7-di-tert-butyl-3-hydroxy-3-trifluoromethyl-3H-benzofuran-2-one ADX71441 Chemical structure currently unravelled Operant, oral alcohol self-administration under the Fixed Ratio (FR) schedule of reinforcement alcohol dispenser FIXED RATIO 4 (FR4) SCHEDULE OF REINFORCEMENT: -Fixed number (4) of lever-responses to access alcohol -0.1 ml alcohol/reinforcement -30 min/day session -[Alcohol]: 15% (v/v) -Measure of alcohol REINFORCING properties Reducing effect of acutely administered GS39783 on alcohol reinforcing properties in Sardinian alcohol-preferring (sP) rats 200 M&M: AlcoholAlcohol 200 SucroseSucrose - Adult, male sP rats 150 150 - Self-administration * sessions: 30 min/day * - [Alcohol]: 15% (v/v) 100 ** 100 responses responses - - [Sucrose]: 0.3% (w/v) - Total Total responses - FR4 schedule 50 responses Total 50 Lever Lever 0 0 0 25 50 100 0 25 50 100 1,0 5,0 0,8 4,0 0,6 * administered administered 3,0 - * - ** 0,4 2,0 alcohol (g/kg) Total Total amount of Total amount of amount Total sucrose (ml/kg) sucrose 0,2 1,0 administered administered alcohol (g/kg) - administered sucrose (ml/kg) sucrose administered - self Amount of Amount self Amount Amount of self 0,0 self 0,0 0 25 50 100 0 25 50 100 GS39783GS39783 (mg/kg; (mg/kg) i.g.) GS39783GS39783 (mg/kg; (mg/kg) i.g.) Reducing effect of repeatedly administered GS39783 on alcohol reinforcing properties in sP rats M&M: - Adult, male sP rats - Self-administration sessions: 30 min/day & FR4 schedule - 10 consecutive sessions - [Alcohol]: 15% (v/v); [Sucrose]: 1% (w/v) Alcohol Sucrose Reducing effect of acutely administered rac-BHFF on alcohol reinforcing properties in Sardinian alcohol-preferring (sP) rats M&M: Alcohol Sucrose 250 250 - Adult, male sP rats - Self-administration 200 200 sessions: 30 min/day 150 150 - [Alcohol]: 15% (v/v) responses responses - - - [Sucrose]: 0.7% (w/v) 100 100 Total responses Total - FR4 schedule responses Total Lever 50 Lever 50 0 0 0 50 100 200 0 50 100 200 1,2 12 1,0 10 0,8 8 administered administered - - 0,6 6 0,4 4 alcohol (g/kg) sucrose (ml/kg) sucrose 0,2 Total alcohol intake (g/kg) intake alcohol Total 2 Total sucrose intake (ml/kg) intake sucrose Total 0,0 0 Amount Amount of self Amount Amount of self 0 50 100 200 0 50 100 200 rac-BHFF (mg/kg; i.g.) rac-BHFF (mg/kg; i.g.) Reducing effect of repeatedly administered rac-BHFF on alcohol reinforcing properties in sP rats M&M: - Adult, male sP rats - Self-administration sessions: 30 min/day & FR4 schedule - 5 consecutive sessions - [Alcohol]: 15% (v/v); [Sucrose]: 1% (w/v) Alcohol Sucrose + + + + Operant, oral alcohol self-administration under the Progressive Ratio (PR) schedule of reinforcement alcohol dispenser PR SCHEDULE OF REINFORCEMENT: -RR: 4, 9, 12, 15, 20, 25, 32, 40, 50, 62, 77, 95, etc. -0.1 ml alcohol/reinforcement -30 min/day session -[Alcohol]: 15% (v/v) -Measure of alcohol MOTIVATIONAL properties Reducing effect of acutely administered GS39783 on alcohol motivational properties in Sardinian alcohol-preferring (sP) rats M&M: 250 AlcoholAlcohol 250 SucroseSucrose - Adult, male sP rats 200 200 - Breakpoint sessions: 60 min - [Alcohol]: 15% (v/v) 150 150 - [Sucrose]: 3% (w/v) 100 100 - PR schedule Total responses Total Total responses Total 50 50 Lever responses Lever Lever responses Lever 0 0 0 25 50 100 0 25 50 100 70 70 60 60 50 50 40 40 30 30 Break point Break point Break Breakpoint Breakpoint 20 20 10 10 0 0 0 2525 50 100 0 GS39783 25 50 (mg/kg) 100 GS39783 (mg/kg) GS39783 (mg/kg; i.g.) GS39783 (mg/kg; i.g.) Comparative study on the reducing effect of acute GS39783 on alcohol reinforcing and motivational properties in alcohol-preferring P, sP, and AA rats Rat line Acronym Foundation stock/ Location Selection procedure ALKO Alcohol AA Wistar/Outbreeding Helsinki, Finland Alcohol-preferring P Wistar/Outbreeding Indianapolis, IN, USA Sardinian alcohol-preferring sP Wistar/Outbreeding Cagliari, Italy FIXED RATIO 4 (FR4) SCHEDULE OF REINFORCEMENT: - 4 lever-responses to access alcohol - 0.1 ml alcohol/reinforcement - 30 min/day session - [Alcohol]: 15% (v/v) - Measure of alcohol REINFORCING properties alcohol dispenser PROGRESSIVE RATIO SCHEDULE OF REINFORCEMENT: - RR: 4, 9, 12, 15, 20, 25, 32, 40, 50, 62, 77, 95, etc. - 0.1 ml alcohol/reinforcement - 30 min/day session - [Alcohol]: 15% (v/v) - Measure of alcohol MOTIVATIONAL properties Differential effect of acute GS39783 on alcohol reinforcing properties in alcohol-preferring P, sP, and AA rats FR4 procedure P rats sP rats AA rats 250 250 250 200 200 * 200 * § * * * * + 150 * * 150 * * * 150 + * * * * * * 100 * 100 * 100 * * * * * on on the alcohol lever on the alcohol lever alcohol the on on the alcohol lever alcohol the on Number responses of 50 50 responses of Number 50 Number of responses of Number 0 0 0 0 25 50 100 0 25 50 100 0 25 50 100 GS39783 (mg/kg) GS39783 (mg/kg) GS39783 (mg/kg) 1,6 1,6 1,6 1,4 1,4 1,4 1,2 1,2 1,2 1,0 * 1,0 1,0 + * * * 0,8 * 0,8 * * * 0,8 * * * * * * Amount of Amount 0,6 * of Amount * * * * * 0,6 * of Amount 0,6 * * 0,4 * 0,4 0,4 administered alcohol (g/kg) alcohol administered * (g/kg) alcohol administered - - administered alcohol (g/kg) alcohol administered 0,2 0,2 - 0,2 self self 0,0 0,0 self 0,0 0 25 50 100 0 25 50 100 0 25 50 100 GS39783 (mg/kg) GS39783 (mg/kg) GS39783 (mg/kg) Order of potency and efficacy of GS39783: P > sP > AA rats Differential effect of acute baclofen on alcohol motivational properties in alcohol-preferring P, sP, and AA rats PR procedure P rats sP rats AA rats 80 80 80 60 60 60 + § + 40 * 40 * 40 + * * * * * * * * 20 20 20 Breakpoint alcohol for Breakpoint Breakpoint alcohol for Breakpoint Breakpoint alcohol for Breakpoint 0 0 0 0 25 50 100 0 25 50 100 0 25 50 100 GS39783 (mg/kg) GS39783 (mg/kg) GS39783 (mg/kg) Order of potency and efficacy of GS39783: P > sP >> AA rats Potentiating effect of the acute combination of per se ineffective doses of GS39783 and baclofen on alcohol self-administration in sP rats Alcohol Sucrose M&M: - Adult, male sP rats - Self-administration sessions: 30 min/day - [Alcohol]: 15% (v/v) - [Sucrose]: 1% (w/v) - FR4 schedule Potentiating effect of the acute combination of per se ineffective doses of rac-BHFF and baclofen on alcohol self-administration in sP rats Alcohol Sucrose M&M: - Adult, male sP rats - Self-administration sessions: 30 min/day - [Alcohol]: 15% (v/v) - [Sucrose]: 1% (w/v) - FR4 schedule Reducing effect of acutely administered CGP7930 and BHF177 on alcohol reinforcing properties in alcohol-preferring P and sP rats M&M: M&M: - Adult, male Indiana alcohol-preferring (P) rats - Adult, male Sardinian alcohol-preferring (sP) rats - Self-administration sessions: 40 min/day - Self-administration sessions: 30 min/day - [Alcohol]: 10% (v/v) - [Alcohol]: 15% (v/v) - FR3 schedule of reinforcement - FR4 schedule of reinforcement 250 200 150 100 50 Lever Lever responses Total number of responses of number Total 0 0 0 10 20 12.5 25 50 CGP7930 (mg/kg; i.p.) BHF177 (mg/kg; i.g.) Liang et al., 2006 Reducing effect of acutely administered GS39783 on alcohol binge-like drinking in Sardinian alcohol-preferring (sP) rats M&M: - Adult, male sP rats 2,5 - Daily drinking sessions of 1 hour during the dark phase with unpredictable time schedule 2,0 - 4-Bottle choice regimen (0%, 10%, 20%, and 30% alcohol) 1,5 1,0 10% 20% 30% H2O EtOH EtOH EtOH 0,5 Alcohol intakeAlcohol (g/kg) 0,0 0 25
Load more

Recommended publications
  • GABA Receptors
    D Reviews • BIOTREND Reviews • BIOTREND Reviews • BIOTREND Reviews • BIOTREND Reviews Review No.7 / 1-2011 GABA receptors Wolfgang Froestl , CNS & Chemistry Expert, AC Immune SA, PSE Building B - EPFL, CH-1015 Lausanne, Phone: +41 21 693 91 43, FAX: +41 21 693 91 20, E-mail: [email protected] GABA Activation of the GABA A receptor leads to an influx of chloride GABA ( -aminobutyric acid; Figure 1) is the most important and ions and to a hyperpolarization of the membrane. 16 subunits with γ most abundant inhibitory neurotransmitter in the mammalian molecular weights between 50 and 65 kD have been identified brain 1,2 , where it was first discovered in 1950 3-5 . It is a small achiral so far, 6 subunits, 3 subunits, 3 subunits, and the , , α β γ δ ε θ molecule with molecular weight of 103 g/mol and high water solu - and subunits 8,9 . π bility. At 25°C one gram of water can dissolve 1.3 grams of GABA. 2 Such a hydrophilic molecule (log P = -2.13, PSA = 63.3 Å ) cannot In the meantime all GABA A receptor binding sites have been eluci - cross the blood brain barrier. It is produced in the brain by decarb- dated in great detail. The GABA site is located at the interface oxylation of L-glutamic acid by the enzyme glutamic acid decarb- between and subunits. Benzodiazepines interact with subunit α β oxylase (GAD, EC 4.1.1.15). It is a neutral amino acid with pK = combinations ( ) ( ) , which is the most abundant combi - 1 α1 2 β2 2 γ2 4.23 and pK = 10.43.
    [Show full text]
  • GABAB Receptor Upregulates Fragile X Mental Retardation Protein
    www.nature.com/scientificreports OPEN GABAB receptor upregulates fragile X mental retardation protein expression in neurons Received: 28 November 2014 1, 1, 1, 1 1 1 Accepted: 15 April 2015 Wenhua Zhang *, Chanjuan Xu *, Haijun Tu *, Yunyun Wang , Qian Sun , Ping Hu , 1 2 1 Published: 28 May 2015 Yongjian Hu , Philippe Rondard & Jianfeng Liu Fragile X mental retardation protein (FMRP) is an RNA-binding protein important for the control of translation and synaptic function. The mutation or silencing of FMRP causes Fragile X syndrome (FXS), which leads to intellectual disability and social impairment. γ -aminobutyric acid (GABA) is the major inhibitory neurotransmitter of the mammalian central nervous system, and its metabotropic GABAB receptor has been implicated in various mental disorders. The GABAB receptor agonist baclofen has been shown to improve FXS symptoms in a mouse model and in human patients, but the signaling events linking the GABAB receptor and FMRP are unknown. In this study, we found that GABAB receptor activation upregulated cAMP response element binding protein-dependent Fmrp expression in cultured mouse cerebellar granule neurons via two distinct mechanisms: the transactivation of insulin-like growth factor-1 receptor and activation of protein kinase C. In addition, a positive allosteric modulator of the GABAB receptor, CGP7930, stimulated Fmrp expression in neurons. These results suggest a role for GABAB receptor in Fmrp regulation and a potential interest of GABAB receptor signaling in FXS improvement. Fragile X mental retardation protein (FMRP) is an RNA-binding protein that controls translation and synaptic function1,2. FMRP mutation or silencing causes Fragile X syndrome (FXS), a common inherited disease associated with autism, intellectual disability, and social impairment3.
    [Show full text]
  • Download Product Insert (PDF)
    PRODUCT INFORMATION (R,S)-BHFF Item No. 25535 CAS Registry No.: 123557-91-5 Formal Name: 5,7-bis(1,1-dimethylethyl)-3-hydroxy-3- (trifluoromethyl)-2(3H)-benzofuranone Synonym: rac-BHFF MF: C17H21F3O3 O FW: 330.3 Purity: ≥95% O UV/Vis.: λmax: 285 nm OH A crystalline solid Supplied as: CF Storage: -20°C 3 Stability: ≥2 years Information represents the product specifications. Batch specific analytical results are provided on each certificate of analysis. Laboratory Procedures (R,S)-BHFF is supplied as a crystalline solid. A stock solution may be made by dissolving the (R,S)-BHFF in the solvent of choice. (R,S)-BHFF is soluble in organic solvents such as ethanol, DMSO, and dimethyl formamide, which should be purged with an inert gas. The solubility of (R,S)-BHFF in these solvents is approximately 30 mg/ml. (R,S)-BHFF is sparingly soluble in aqueous buffers. For maximum solubility in aqueous buffers, (R,S)-BHFF should first be dissolved in ethanol and then diluted with the aqueous buffer of choice. (R,S)-BHFF has a solubility of approximately 0.25 mg/ml in a 1:3 solution of ethanol:PBS (pH 7.2) using this method. We do not recommend storing the aqueous solution for more than one day. Description (R,S)-BHFF is a positive allosteric modulator of GABAB receptors that increases the potency of GABA by 35 1 15.3-fold in a GTPγ[ S] binding assay when used at a concentration of 0.3 μM. It is selective for GABAB over a panel of receptors and ion channels at 10 μM, however, it inhibits the cholecystokinin-1 (CCKA) receptor (IC50 = 4.1 μM).
    [Show full text]
  • GABABR-Induced EGFR Transactivation Promotes Migration of Human Prostate Cancer Cells S
    Supplemental material to this article can be found at: http://molpharm.aspetjournals.org/content/suppl/2017/05/05/mol.116.107854.DC1 1521-0111/92/3/265–277$25.00 https://doi.org/10.1124/mol.116.107854 MOLECULAR PHARMACOLOGY Mol Pharmacol 92:265–277, September 2017 Copyright ª 2017 by The American Society for Pharmacology and Experimental Therapeutics MOLECULAR PHARMACOLOGY IN CHINA GABABR-Induced EGFR Transactivation Promotes Migration of Human Prostate Cancer Cells s Shuai Xia, Cong He, Yini Zhu, Suyun Wang, Huiping Li, Zhongling Zhang, Xinnong Jiang, and Jianfeng Liu Downloaded from Cell Signaling Laboratory, College of Life Science and Technology, Collaborative Innovation Center for Genetics and Development, and Key Laboratory of Molecular Biophysics of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, People’s Republic of China Received December 14, 2016; accepted April 14, 2017 molpharm.aspetjournals.org ABSTRACT G protein–coupled receptors (GPCRs) and receptor tyrosine ERK1/2 by a mechanism that is dependent on Gi/o protein and kinases (RTKs) act in concert to regulate cell growth, pro- that requires matrix metalloproteinase–mediated proligand liferation, survival, and migration. Metabotropic GABAB receptor shedding. Positive allosteric modulators (PAMs) of GABABR, (GABABR) is the GPCR for the main inhibitory neurotransmitter such as CGP7930, rac-BHFF, and GS39783, can function as GABA in the central nervous system. Increased expression of PAM agonists to induce EGFR transactivation and subsequent GABABR has been detected in human cancer tissues and cancer ERK1/2 activation. Moreover, both baclofen and CGP7930 cell lines, but the role of GABABR in these cells is controversial promoted cell migration and invasion through EGFR signaling.
    [Show full text]
  • GABA Receptors
    Tocris Scientific ReviewReview SeriesSeries Tocri-lu-2945 GABA Receptors Ian L. Martin, Norman G. Bowery Historical Perspective and Susan M.J. Dunn GABA is the major inhibitory amino acid transmitter of the Ian Martin is Professor of Pharmacology in the School of Life and mammalian central nervous system (CNS). Essentially all neurons Health Sciences, Aston University, Birmingham, UK. Norman in the brain respond to GABA and perhaps 20% use it as their 1 Bowery is Emeritus Professor of Pharmacology, University of primary transmitter. Early electrophysiological studies, carried Birmingham, UK. Susan Dunn is Professor and Chair at the out using iontophoretic application of GABA to CNS neuronal Department of Pharmacology, Faculty of Medicine and Dentistry, preparations, showed it to produce inhibitory hyperpolarizing 2 University of Alberta, Canada. All three authors share common responses that were blocked competitively by the alkaloid 3 interests in GABAergic transmission. E-mail: sdunn@pmcol. bicuculline. However, in the late 1970s, Bowery and his ualberta.ca colleagues, who were attempting to identify GABA receptors on peripheral nerve terminals, noted that GABA application reduced the evoked release of noradrenalin in the rat heart and that this Contents effect was not blocked by bicuculline. This action of GABA was Introduction ............................................................................................. 1 mimicked, however, by baclofen (Figure 1), a compound that was unable to produce rapid hyperpolarizing responses
    [Show full text]
  • The GABAB Receptor—Structure, Ligand Binding and Drug Development
    molecules Review The GABAB Receptor—Structure, Ligand Binding and Drug Development Linn Samira Mari Evenseth * , Mari Gabrielsen and Ingebrigt Sylte Molecular Pharmacology and Toxicology, Department of Medical Biology, Faculty of Health Sciences, UiT The Arctic University of Norway, NO-9037 Tromsø, Norway; [email protected] (M.G.); [email protected] (I.S.) * Correspondence: [email protected] Academic Editor: Mercedes Alfonso-Prieto Received: 29 May 2020; Accepted: 6 July 2020; Published: 7 July 2020 Abstract: The γ-aminobutyric acid (GABA) type B receptor (GABAB-R) belongs to class C of the G-protein coupled receptors (GPCRs). Together with the GABAA receptor, the receptor mediates the neurotransmission of GABA, the main inhibitory neurotransmitter in the central nervous system (CNS). In recent decades, the receptor has been extensively studied with the intention being to understand pathophysiological roles, structural mechanisms and develop drugs. The dysfunction of the receptor is linked to a broad variety of disorders, including anxiety, depression, alcohol addiction, memory and cancer. Despite extensive efforts, few compounds are known to target the receptor, and only the agonist baclofen is approved for clinical use. The receptor is a mandatory heterodimer of the GABAB1 and GABAB2 subunits, and each subunit is composed of an extracellular Venus Flytrap domain (VFT) and a transmembrane domain of seven α-helices (7TM domain). In this review, we briefly present the existing knowledge about the receptor structure, activation and compounds targeting the receptor, emphasizing the role of the receptor in previous and future drug design and discovery efforts. Keywords: GABAB receptors; orthosteric binding site; allosteric binding site; structural mechanisms; drug development; baclofen 1.
    [Show full text]
  • GABA Receptors
    Tocris Scientific Review Series Tocri-lu-2945 GABA Receptors Ian L. Martin, Norman G. Bowery Historical Perspective and Susan M.J. Dunn GABA is the major inhibitory amino acid transmitter of the Ian Martin is Professor of Pharmacology in the School of Life and mammalian central nervous system (CNS). Essentially all neurons Health Sciences, Aston University, Birmingham, UK. Norman in the brain respond to GABA and perhaps 20% use it as their 1 Bowery is Emeritus Professor of Pharmacology, University of primary transmitter. Early electrophysiological studies, carried Birmingham, UK. Susan Dunn is Professor and Chair at the out using iontophoretic application of GABA to CNS neuronal Department of Pharmacology, Faculty of Medicine and Dentistry, preparations, showed it to produce inhibitory hyperpolarizing 2 University of Alberta, Canada. All three authors share common responses that were blocked competitively by the alkaloid 3 interests in GABAergic transmission. E-mail: sdunn@pmcol. bicuculline. However, in the late 1970s, Bowery and his ualberta.ca colleagues, who were attempting to identify GABA receptors on peripheral nerve terminals, noted that GABA application reduced the evoked release of noradrenalin in the rat heart and that this Contents effect was not blocked by bicuculline. This action of GABA was Introduction ............................................................................................. 1 mimicked, however, by baclofen (Figure 1), a compound that was unable to produce rapid hyperpolarizing responses in central
    [Show full text]
  • PR6 2008.Vp:Corelventura
    Pharmacological Reports Copyright © 2008 2008, 60, 755–770 by Institute of Pharmacology ISSN 1734-1140 Polish Academy of Sciences Review GABAB receptors in drug addiction Ma³gorzata Filip, Ma³gorzata Frankowska Laboratory of Drug Addiction Pharmacology, Department of Pharmacology, Institute of Pharmacology, Polish Academy of Sciences, Smêtna 12, PL 31-343 Kraków, Poland Correspondence: Ma³gorzata Filip, e-mail: [email protected] Abstract: Preclinical studies and clinical trials carried out within the past few years have provided a premise that g-aminobutyric acid (GABA) transmission and GABAB receptors play a modulatory role in the mechanism of action of different drugs of abuse. The present re- view summarizes the contribution of GABAB receptors to the rewarding, locomotor and discriminative stimulus properties of drugs of abuse and their withdrawal symptoms in laboratory animals. It also reviews the current knowledge about the GABAB receptor ligands in clinical trials, with a focus on their effects on presentation of the drug-associated cues and withdrawal-induced drug craving. Key words: addictive substances, discrimination, GABAB receptor ligands, locomotion, reward, reinstatement of seeking behavior, withdrawal, laboratory animals, clinical trials Introduction Recently published data (preclinical studies and clinical trials) have provided a premise that g-amino- butyric acid (GABA) and GABAB receptors play According to the World Health Organization (WHO), a modulatory role in the mechanism of action of dif- drug addiction is a chronic disease of the central nerv- ferent drugs of abuse [4, 35, 70, 102, 132, 147, 158]. ous system that is characterized by a loss of control over impulsive behavior that leads to compulsive drug seeking and taking and to relapses even after many months of abstinence.
    [Show full text]
  • Effects of Co-Administration of the GABAB Receptor Agonist Baclofen
    Pharmacological Reports Copyright © 2013 2013, 65, 11321143 by Institute of Pharmacology ISSN 1734-1140 Polish Academy of Sciences Effectsofco-administrationoftheGABAB receptoragonistbaclofenandapositiveallosteric modulatoroftheGABAB receptor,CGP7930,on thedevelopmentandexpressionofamphetamine- inducedlocomotorsensitizationinrats LauraN.Cedillo,FlorencioMiranda FESIztacala,NationalAutonomousUniversityofMéxico,Av. delosBarrios1,LosReyesIztacalaTlalnepantla, Edo.deMéxico54090,México Correspondence: FlorencioMiranda,e-mail:[email protected] Abstract: Background: Several of the behavioral effects of amphetamine (AMPH) are mediated by an increase in dopamine neurotransmis- sion in the nucleus accumbens. However, evidence shows that g-aminobutyric acid B (GABAB) receptors are involved in the behav- ioral effects of psychostimulants, including AMPH. Here, we examined the effects of co-administration of the GABAB receptor agonist baclofen and a positive allosteric modulator of the GABAB receptor, CGP7930, on AMPH-induced locomotor sensitization. Methods: In a series of experiments, we examined whether baclofen (2.0, 3.0 and 4.0 mg/kg), CGP7930 (5.0, 10.0 and 20.0 mg/kg), or co-administration of CGP7930 (5.0, 10.0 and 20.0 mg/kg) with a lower dose of baclofen (2.0 mg/kg) could prevent the develop- mentandexpressionoflocomotorsensitizationproducedbyAMPH(1.0mg/kg). Results: The results showed that baclofen treatment prevented both the development and expression of AMPH-induced locomotor sensitization in a dose-dependent manner. Furthermore, the
    [Show full text]
  • Reduction by the Positive Allosteric Modulator of the GABA Receptor
    ORIGINAL RESEARCH ARTICLE published: 19 July 2010 PSYCHIATRY doi: 10.3389/fpsyt.2010.00020 Reduction by the positive allosteric modulator of the GABAB receptor, GS39783, of alcohol self-administration in Sardinian alcohol-preferring rats exposed to the “sipper” procedure Paola Maccioni1†, Paolo Flore 2†, Mauro A. M. Carai1, Claudia Mugnaini 3, Serena Pasquini 3, Federico Corelli 3, Gian Luigi Gessa1 and Giancarlo Colombo1* 1 Consiglio Nazionale delle Ricerche Neuroscience Institute, Cagliari, Italy 2 Department of Neuroscience, University of Cagliari, Cagliari, Italy 3 Department of Pharmaceutical and Applied Chemistry, University of Siena, Siena, Italy Edited by: The present study was designed to evaluate (a) alcohol self-administration behavior of selectively Lorenzo Leggio, Brown University, USA bred, Sardinian alcohol-preferring (sP) rats exposed to the so-called “sipper” procedure Reviewed by: (characterized by the temporal separation between alcohol-seeking and -taking phases), and Malgorzata Filip, Polish Academy of Sciences, Poland (b) the effect of the positive allosteric modulator of the GABAB receptor, GS39783, on alcohol Maria E. Quintanilla, Universidad de self-administration in sP rats exposed to this procedure. To this end, sP rats were initially trained Chile, Chile to lever-respond under a reinforcement requirement (RR) 55 (RR55) for alcohol. Achievement *Correspondence: of RR55 resulted in the 20-min presentation of the alcohol (15%, v/v)-containing sipper bottle. Giancarlo Colombo, Consiglio Once stable levels of lever-responding and alcohol consumption were reached, rats were treated Nazionale delle Ricerche Neuroscience Institute, Viale Diaz 182, I-09126, with 0, 25, 50, and 100 mg/kg GS39783 (i.g.) 60 min before the self-administration session.
    [Show full text]
  • (12) United States Patent (10) Patent No.: US 9,526,718 B2 Lee Et Al
    USO09526718B2 (12) United States Patent (10) Patent No.: US 9,526,718 B2 Lee et al. (45) Date of Patent: Dec. 27, 2016 (54) COMBINATION OF EFFECTIVE (56) References Cited SUBSTANCES CAUSING SYNERGISTC EFFECTS OF MULTIPLE TARGETING AND U.S. PATENT DOCUMENTS USE THEREOF 2003/0235589 A1* 12/2003 Demopulos .......... A61K9/0019 424,178.1 (75) Inventors: Doo Hyun Lee, Seoul (KR); Sunyoung 2007/O123544 A1* 5/2007 Plourde et al. ............ 514,2611 Cho, Gyeonggi-do (KR) 2008/0242682 A1 10/2008 Hirai et al. 2010/0311674 A1 12/2010 Zhang 2011/O152205 A1* 6/2011 Liang ................... A61K 31,352 (73) Assignee: VIVOZON, INC., Seoul (KR) 514, 23 (*) Notice: Subject to any disclaimer, the term of this FOREIGN PATENT DOCUMENTS patent is extended or adjusted under 35 CN 101721589 A * 6, 2010 U.S.C. 154(b) by 277 days. JP 2005-526O79. A 9, 2005 JP 2008-531714 A 8, 2008 (21) Appl. No.: 14/128,616 KR 10-2007-0079497 A 7/2007 KR 10-2007-0085973 A 8, 2007 KR 10-2009-01-13462 A 2, 2009 (22) PCT Filed: Jun. 28, 2012 KR 10-2010-00091206. A 8, 2010 WO O3O77897 A1 9, 2003 (86). PCT No.: PCT/KR2O12/OOS145 WO 2006096434 A2 9, 2006 S 371 (c)(1), (2), (4) Date: Jan. 16, 2014 OTHER PUBLICATIONS Houghton et al., a GlyT2 inhibitor, Org 25543, reduces mechanical (87) PCT Pub. No.: WO2013/002584 allodynia in neuropathic rats. Society for Neuroscience Abstracts, PCT Pub. Date: Jan. 3, 2013 (2001) vol. 27, No. 1, pp. 741.* Baek, N., et al., “Effects of Several Medicinal Plants on the Activity (65) Prior Publication Data of GABA-metabolizing Enzymes”, “Kor.
    [Show full text]
  • Phd Antonia Asimakopoulou.Pdf
    ΠΑΝΕΠΙΣΤΗΜΙΟ ΠΑΤΡΩΝ ΣΧΟΛΗ ΕΠΙΣΤΗΜΩΝ ΥΓΕΙΑΣ ΤΜΗΜΑ ΦΑΡΜΑΚΕΥΤΙΚΗΣ Φαρμακολογικός χαρακτηρισμός ουσιών που μεταβάλλουν τα επίπεδα H 2 S: μεταβολές στην κυτταρική σηματοδότηση και επιπτώσεις στις κυτταρικές λειτουργίες. ΔΙΔΑΚΤΟΡΙΚΗ ΔΙΑΤΡΙΒΗ ΑΣΗΜΑΚΟΠΟΥΛΟΥ ΑΝΤΩΝΙΑ ΧΗΜΙΚΟΣ, MSc ΠΑΤΡΑ 2017 ΠΑΝΕΠΙΣΤΗΜΙΟ ΠΑΤΡΩΝ ΣΧΟΛΗ ΕΠΙΣΤΗΜΩΝ ΥΓΕΙΑΣ ΤΜΗΜΑ ΦΑΡΜΑΚΕΥΤΙΚΗΣ Φαρμακολογικός χαρακτηρισμός ουσιών που μεταβάλλουν τα επίπεδα H 2 S: μεταβολές στην κυτταρική σηματοδότηση και επιπτώσεις στις κυτταρικές λειτουργίες. ΔΙΔΑΚΤΟΡΙΚΗ ΔΙΑΤΡΙΒΗ H παρούσα έρευνα έχει συγχρηματοδοτηθεί από την Ευρωπαϊκή Ένωση (Ευρωπαϊκό Κοινωνικό Ταμείο - ΕΚΤ) και από εθνικούς πόρους μέσω του Επιχειρησιακού Προγράμματος «Εκπαίδευση και Δια Βίου Μάθηση» του Εθνικού Στρατηγικού Πλαισίου Αναφοράς (ΕΣΠΑ) – Ερευνητικό Χρημα τοδοτούμενο Έργο: ΘΑΛΗΣ: «Υδρόθειο (H 2 S) ένας νέος ενδογενής ρυθμιστής της αγγειογένεσης: μελέτες σηματοδότησης, φυσιολογικοί και παθοφυσιολογικοί ρόλοι και ανάπτυξη φαρμακολογικών αναστολέων». MIS : 380259, Φ.Κ.: D 554 ΑΣΗΜΑΚΟΠΟΥΛΟΥ ΑΝΤΩΝΙΑ ΧΗΜΙΚΟΣ, MSc ΔΙΔΑΚΤΟΡΙΚΗ ΔΙΑΤΡΙΒΗ Φαρμακολογικός χαρακτηρισμός ουσιών που μεταβάλλουν τα επίπεδα H 2 S: μεταβολές στην κυτταρική σηματοδότηση και επιπτώσεις στις κυτταρικές λειτουργίες. ΕΞΕΤΑΣΤΙΚΗ ΕΠΙΤΡΟΠΗ ΤΟΠΟΥΖΗΣ ΣΤΑΥΡΟΣ ΑΝΑΠΛΗΡΩΤΗΣ ΚΑΘΗΓΗΤΗΣ ΦΑΡΜΑΚΕΥΤΙΚΗΣ ΠΑΝ/ΜΙΟΥ ΠΑΤΡΩΝ ΕΠΙΒΛΕΠΩΝ ΚΑΘΗΓΗΤΗΣ ΠΑΠΑΠΕΤΡΟΠΟΥΛΟΣ ΑΝΔΡΕΑΣ ΚΑΘΗΓΗΤΗΣ ΦΑΡΜΑΚΕΥΤΙΚΗΣ ΕΚΠΑ ΜΕΛΟΣ ΤΡΙΜΕΛΟΥΣ ΣΥΜΒΟΥΛΕΥΤΙΚΗΣ ΕΠΙΤΡΟΠΗΣ ΣΠΥΡΟΥΛΙΑΣ ΓΕΩΡΓΙΟΣ ΚΑΘΗΓΗΤΗΣ ΦΑΡΜΑΚΕΥΤΙΚΗΣ ΠΑΝ/ΜΙΟΥ ΠΑΤΡΩΝ ΜΕΛΟΣ ΤΡΙΜΕΛΟΥΣ ΣΥΜΒΟΥΛΕΥΤΙΚ ΗΣ ΕΠΙΤΡΟΠΗΣ ΚΥΠΡΑΙΟΣ ΚΥΡΙΑΚΟΣ ΚΑΘΗΓΗΤΗΣ ΙΑΤΡΙΚΗΣ ΠΑΝ/ΜΙΟΥ
    [Show full text]