Thèses sur le sujet « Récepteur D1 de la dopamine »
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Goyet, Elise. « Dynamique et fonction des interactions entre récepteurs du glutamate et de la dopamine ». Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTT019.
Texte intégralIn some specific brain areas, synergism between glutamate and dopamine transmission is required to induce synaptic plasticity. Metabotropic glutamate receptor mGlu5 and dopamine receptor D1 are both known to control synaptic plasticity. Moreover, multiple lines of evidence converge toward the ability of G-protein coupled receptors to form dynamic heteromers thereby creating new entities with unique properties. Focusing on the hypothesis of receptor heteromerization, my PhD project aimed at investigating the molecular mechanisms underlying a functional interplay between mGlu5 and D1 receptors.To address this issue, a first part of this work consisted in improving single-cell Bioluminescent Resonance Energy Transfer (BRET) imaging, a technology enabling to study real time protein-protein interaction dynamics in living cells. Using the Nanoluciferase, an extremely bright luciferase, we characterized a faster and higher resolution single-cell BRET imaging technique with unprecedented performance in terms of temporal and spatial resolution, duration of signal stability and signal sensitivity. In the second part of this project, we showed that mGlu5 and D1 can form heteromers in heterologous expression system. The above-mentioned improvements of single-cell BRET imaging technique allowed to evidence the occurrence and the dynamics of mGlu5/D1 heteromers in cultured primary neurons. Furthermore, our results showed that the co-expression of mGlu5 and D1 receptors modifies single receptor properties to favor calcium signaling by increasing mGlu5 constitutive activity and creating a D1 agonist-induced activation of Ca2+ release from intracellular stores.These findings advance our knowledge about the molecular basis of the glutamate/dopamine functional dialogue to control neuronal communication in physiological conditions. Further investigation will help the dissection of the mGlu5/D1 heteromer specific signaling pathway with the hope of defining new therapeutics that may selectively modulate heteromer function and thus bypass undesirable side effects
LE, CROM Stéphane. « Analyse comparée des récepteurs D1 de la dopamine chez les vertébrés : Définition des caractères fonctionnels spécifiques de chacun des sous-types du récepteur D1 ». Phd thesis, Université Paris Sud - Paris XI, 2000. http://tel.archives-ouvertes.fr/tel-00009188.
Texte intégralBermand, Christelle. « Synthèse d'analogues hétérocycliques de ligands pour les récepteurs D1 de la dopamine ». Metz, 1999. http://www.theses.fr/1999METZ037S.
Texte intégralThibaut, Florence. « Système dopaminergique nigro-striatal : étude des récepteurs D1 et des transporteurs de l'amine ». Rouen, 1996. http://www.theses.fr/1996ROUES017.
Texte intégralBerthet, Amandine. « Relations entre les dyskinésies L-dopa induites et le récepteur D1 de la dopamine dans les neurones striataux : étude expérimentale et perspectives en thérapeutique ». Thesis, Bordeaux 2, 2010. http://www.theses.fr/2010BOR21754/document.
Texte intégralIn my thesis work, I studied the role of dopamine D1 receptor in L-dopa induced dyskinesia, a debilitating complication of Parkinson's disease’s treatment. In condition of striatal denervation, that mimics the Parkinson's disease environment, chronic treatment with L-dopa leads to major alterations of intraneuronal trafficking and dopamine D1 receptor signaling in the major target of dopamine neurons, the striatal medium spiny neurons. In particularly, there is a D1 receptor hypersensitivity in striatal neurons, with an increased abundance of D1 receptor at the plasma membrane and a decreased level of GRK6 protein expression, a key actor in desensitization mechanism, directly related with the apparition of dyskinesia.In this context, I used different in vitro and in vivo experimental models and tools. I have associated cell and tissue imaging techniques and behavioural approaches in order to explore cellular and molecular events in striatal neuron and neuronal networks, linking the D1 receptor expression level, its cellular compartmentalization, its intraneuronal trafficking and the dyskinesia behaviour or equivalent pharmacological conditions.We confirmed in the rat analog of L-dopa-induced dyskinesia, i.e., the L-dopa-induced abnormal involuntary movements in unilaterally 6-hydroxydopamine (6-OHDA)-lesioned animals, that D1 receptor is abnormally abundant in the plasma membrane of neurons in the striatum, whereas it should be internalized after stimulation by its natural ligand, the dopamine. We showed that nevertheless the internalization mechanisms after agonist stimulation remains functional. After D1 agonist administration in dyskinetic animals, D1 receptor abundance increases in the cytoplasmic compartments involved in the internalization and transport (vesicles) and degradation (multivesicular bodies) mechanisms. Based on D3 receptor antagonist experiment, we propose that this abnormal abundance and this lack of internalization could be due to heterodimerization between the D1 and D3 receptors. D1 and D3 receptors co-activation by L-dopa might anchor D1 receptor at the plasma membrane of striatal neurons.In this context, analysis of proteasome involvement in the regulation of dopamine D1 receptor expression seemed particularly important, on the basis of the first studies underlying proteasome involvement in the activity and metabolism of neurotransmitter receptors. We demonstrated for the first time links between the proteasomal catalytic activity and D1 receptor intraneuronal dynamics and more particularly we showed that the proteasome chymotrypsin-like activity is reduced specifically in the striatum of dyskinetic animals, as a direct consequence of dopamine depletion associated with dopaminergic hyperstimulation.We tested in experimental condition, a new "therapeutic"strategy in order to restore the dopamine D1 receptor homologous desensitization mechanism, correcting the GRK6 kinase deficit by gene transfer through the intrastriatal injection of a lentiviral vector. We showed that this approach reduces significantly the dyskinesia severity in rat and non-human primate models and restores the L-dopa therapeutic effects. These effects are a consequence of the homologous desensitization mechanisms restoration : indeed GRK6 overexpression provokes specific D1 receptor internalization.Our results are part of a translational research conducted over several years in the laboratory from cell to patient, in order to translate our increased understanding of D1 receptor function abnormalities into therapeutic strategies for L-dopa induced dyskinesia. Our investigations show that it is possible to act on D1 receptor expression at the plasma membrane of striatal neurons via various routes, all resulting into diminished dyskinesia severity
Labaune, Jean-Marc. « Effet de l'exposition anténatale aux corticoi͏̈des et de l'hypoxie sur l'expression du récepteur dopaminergique D1 dans la surrénale de lapin en développement ». Nancy 1, 2002. http://docnum.univ-lorraine.fr/public/SCD_T_2002_0321_LABAUNE.pdf.
Texte intégralCorvol, Jean-Christophe. « Rôle et régulation de la protéine G-alpha-olf dans le striatum ». Paris 6, 2005. http://www.theses.fr/2005PA066284.
Texte intégralTremblais, Philippe. « Les récepteurs dopaminergiques (D1 à D5) et comparaison des effets secondaires entre le sulpiride et l'amisulpride ». Paris 5, 1992. http://www.theses.fr/1992PA05P106.
Texte intégralCosta, Campos Renan. « Striatum, Dopamine et Automatisation dans l’Addiction à la Cocaïne et dans la Rechute : Investigation Pharmacologique et Comportementale ». Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0934/document.
Texte intégralFor many, drug taking may continue on an occasional basis for a long time; however, some individuals lose control of their drug use and are unable to stop. The transition from casual use to addiction is accompanied by drug-induced changes in the brain, followed by associated changes in behavioral functions. One of the most problematic aspects of addiction is the enduring vulnerability to relapse that persists even long after withdrawal symptoms have abated. Rodent models of drug self-administration (SA) show that re-exposure to the drug itself, drug associated cues or stress are major triggers of relapse. While different classes of drugs vary in their primary pharmacological mechanisms, they all share an acute effect of raising dopamine (DA) levels in the striatum. Following repeated use, the addictive properties of psychostimulants such as cocaine (COC) are believed to take place through the induction of neuroadaptations within the mesocorticolimbic DA system.The striatum is a major target of the DA system, where DA acts on two families of metabotropic receptors (D1-like or D2-like) that are segregated into two pathways of medium spiny neurons (MSNs) and have different roles in addiction and relapse. For instance, while systemic D2 receptor (D2R) stimulation induces reinstatement of COC seeking in rats, D1 receptor (D1R) stimulation does not. DA signaling in the nucleus accumbens (NAcc) responds to rewarding and aversive stimuli; in turn, the dorsolateral striatum (DLS) plays a key role in the transition to compulsive use, and the habitual aspects of drug-seeking after prolonged drug SA. Despite several works examining their role in relapse, the results remain somewhat unclear. Given their critical but differential involvement in COC seeking, here we investigated the role of D1R and D2R receptors of the NAcc and DLS in relapse, employing pharmacological manipulations, as well as assessing their protein expression using an animal model of COC SA. Our results showed a double dissociation between the actions of both DA receptors (DARs) in the striatum. Pharmacological activation of the D1R, but not D2R of the NAcc induces reinstatement of COC seeking, whereas the same effect is triggered by the activation of D2R, but not D1R of the DLS. Also, the reinstating effects of the systemic D2R stimulation is blocked by D1R or D2R antagonists injected into the NAcc or D1R antagonist into the DLS, while being blunted by the D2R inhibition in the DLS. These results convey an interaction between both receptor subtypes, likely relying on ascending spiraling connections associating the ventral and the dorsal striatum through midbrain-reaching loops. Finally, we found the reinstatement of COC seeking elicited by D1R or D2R agonists in either region is not due to changes in DAr expression.These results enticed us to examine the behavioral mechanisms underpinning reinstating behavior. Though initially goal-directed, COC seeking is argued to become habitual after extended training. This progression is believed to initially elicit functional changes within the NAcc, and gradually hijack the circuitry of the dorsal striatum. The activation of D1R in the NAcc and D2R in the DLS has been associated with the processing of rewarding properties and habitual responding for drugs, respectively. Therefore, we aimed to assess whether the reinstatement of COC seeking triggered by the D2R stimulation within the DLS would involve incentive motivational or reinforcing processes likely underlying those induced by the D1R stimulation within the NAcc. Also, we aimed to assess whether the D1R stimulation within the NAcc involves the overtaking of the behavioral control by habitual stimulus-response mechanisms which may be involved in the reinstatement of drug-seeking after the D2R stimulation in the DLS
Hoffmann, Hanne M. « Evidence of histamine H3 receptor crosstalk with dopamine D1 receptors and group 1 metabotropic glutamate receptors in the brain : possible link with cocaine addiction-like behavior in rodents ». Thesis, Montpellier 2, 2010. http://www.theses.fr/2010MON20139.
Texte intégralAlterations of neuronal activity, mediated by G-protein coupled receptors (GPCRs), can modulate neuronal circuits and are thought to be important in the development and expression of diseases as cocaine addiction. GPCR activity is regulated by various mechanisms, including protein-protein interactions in the membrane, permitting these receptors to crosstalk and form homo-and heteromers. Cocaine blocks monoamine reuptake leading to increased synaptic presence of various neurotransmitters including dopamine, histamine and glutamate in the brain. First we describe that dopamine D1 receptors (D1R) and histamine H3 receptors (H3R) crosstalk in the rodent brain. Chronic cocaine self-administration altered the crosstalk between D1R and H3R in the striatum, a brain structure involved in habit learning and motor control. The altered signaling was observed in both individual receptor signaling and by D1R-H3R crosstalk signaling. Both histamine H¬3R and metabotropic glutamate 1/5 receptors (mGlu1/5R) are highly expressed in the hippocampus and the striatum of rodents and they are involved in behaviors regulated by these structures. We describe that H3R and mGlu1/5R crosstalk in pyramidal neurons of the hippocampus and in the striatum of rats. In addition, we found that signaling through H3R and mGlu1/5R were differently affected by chronic cocaine self-administration than the apparent crosstalk between the receptors. These results show evidence of GPCR interactions in adult rodent brain and reveal that chronic cocaine self-administration differently affected crosstalk and single receptor mediated signaling
Stipanovich, Alexandre. « Accumulation nucléaire de la DARPP-32 dans les neurones épineux de taille moyenne du striatum après traitement par les psychostimulants : mécanismes et signification biologique ». Paris 6, 2006. http://www.theses.fr/2006PA066412.
Texte intégralBeauvais, Geneviève. « Molecular and cellular bases for the protective effects of dopamine D1 receptor antagonist, SCH23390, against methamphetamine-induced neurotoxicity in the rat brain ». Phd thesis, Université René Descartes - Paris V, 2012. http://tel.archives-ouvertes.fr/tel-00691924.
Texte intégralCaillé, Isabelle. « Bases anatomiques du contrôle des neurones striataux par les récepteurs D1 à la Dopamine : étude immunohistochimique chez le rat adulte et au cours du développement ». Bordeaux 2, 1996. http://www.theses.fr/1996BOR28411.
Texte intégralSalmi, Peter. « Clozapine as a dopamine D1 receptor agonist / ». Stockolm : Universitet Stockholms, 1998. http://catalogue.bnf.fr/ark:/12148/cb401175060.
Texte intégralSatchell, Rupert. « Signalling and regulation of the D1 dopamine receptor ». Thesis, University of Leicester, 2013. http://hdl.handle.net/2381/38068.
Texte intégralSugamori, Kim S. « The dopamine D1C receptor, expansion and origin of the dopamine D1 receptor family ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0001/NQ41320.pdf.
Texte intégralKotowski, Sarah. « Regulation of dopamine signaling by D1 receptor membrane trafficking ». Diss., Search in ProQuest Dissertations & ; Theses. UC Only, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3390053.
Texte intégralHoward, Brett. « Effects of a dopamine D1 antagonist on sexual learning ». Tallahassee, Fla. : Florida State University, 2008. http://purl.fcla.edu/fsu/lib/digcoll/undergraduate/honors-theses/341774.
Texte intégralAdvisor: Dr. Elaine Hull, Florida State University, College of Arts and Sciences, Dept. of Biological Science. Includes bibliographical references.
Ng, Gordon Y. K. « Biochemical and pharmacological studies on dopamine D1 and D2L receptors ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ35444.pdf.
Texte intégralKant, Andrew Charles Mailman Richard B. « Functional selectivity at the D1 dopamine receptor studies using SKF83959 / ». Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2008. http://dc.lib.unc.edu/u?/etd,2006.
Texte intégralTitle from electronic title page (viewed Feb. 17, 2009). "... in partial fulfillment of the requirements for the degree of Master of Science in the Curriculum in Toxicology." Discipline: Toxicology; Department/School: Medicine.
Tumova, Katerina. « Uncovering the molecular interplays of dopamine D1-like receptor activation ». Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/26347.
Texte intégralMontalban, Enrica. « Long-lasting effects of operant conditioning and cocaine on D1 pyramidal neurons in prefrontal cortex and on the D1 and D2 striatal neurons mRNAs ». Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066723/document.
Texte intégralDopamine (DA) controls movement execution, action selection, and incentive learning by regulating the activity and plasticity of corticostriatal transmission. Long-term modifications require changes in gene transcription. The aim of this work is to study the changes in transcriptions following an operant learning protocol or mimicking stimulation of the reward system with cocaine in the dorsal striatum and the nucleus accumbens in the striatum, and in the prefrontal cortex. The medium-size spiny striatal projection neurons (SPNs) can be divided into 2 different populations based on the expression of the D1 or D2 DA receptor that participate in distinct pathways, which have opposite functional effects on their target regions. We used transgenic mice that express a tagged ribosomal protein (L10a-EGFP) under control of the D1 or D2 receptor promoter to isolate currently translated mRNA and nuclei from each population of SPNs, as well as from D1 neurons of the prefrontal cortex following passive stimulation of the reward system (chronic treatment with cocaine) and active recruitment of the reward system (operant learning for food). Firstly we compared the basal gene expression in the different neuronal populations characterized by the expression of D1 or D2 receptors and their regional localization. We identified hundreds of differentially expressed mRNA providing a precise characterization of the cellular and regional differences. In the second part, we characterized the changes induced in each neuronal population by a 1-week exposure to cocaine or after operant training for food
Chandler, Christopher John. « The effects of dopamine D1 and D2 receptor activity on mouse behaviour ». Thesis, University of Hertfordshire, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314628.
Texte intégralHamdi, Anwar A. « Dopamine Agonists Modify the Development of Brain D1 and D2 Receptor Responsiveness ». Digital Commons @ East Tennessee State University, 1990. https://dc.etsu.edu/etd/2692.
Texte intégralKruse, Maria Sol. « Plasticity of the dopamine 1 receptor and its signaling pathway / ». Stockholm, 2003. http://diss.kib.ki.se/2003/91-7349-652-9/.
Texte intégralZhang, Boyang. « Functional and Structural Insights into the First and Second Intracellular Domains for D1-Class Dopaminergic Receptors ». Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/35932.
Texte intégralWang, Xinyan. « Pituitary dopamine D1 receptor and growth hormone gene expression in Chinese grass carp ». View the Table of Contents & ; Abstract, 2007. http://sunzi.lib.hku.hk/hkuto/record/B37230724.
Texte intégralFoged, Christian. « Development of radioligands for emission tomography imaging of dopamine D1 and benzodiazepine receptors / ». Stockholm, 1997. http://diss.kib.ki.se/1997/91-628-2618-2/.
Texte intégralWang, Xinyan, et 汪新艷. « Pituitary dopamine D1 receptor and growth hormone gene expression in Chinese grass carp ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B38299872.
Texte intégralZenko, Michelle J. « Effects of dopamine D1 and D2 receptor agonists on cognitive functions in rats ». Thesis, University of Ottawa (Canada), 2009. http://hdl.handle.net/10393/28187.
Texte intégralMorvan, Cecile I. « Mesolimbic Dopamine Involvement in Pavlovian and Operant Approach Behaviors ». Thesis, Boston College, 2010. http://hdl.handle.net/2345/1334.
Texte intégralPrevious research has yielded conflicting results regarding the involvement of mesolimbic dopamine in Pavlovian and operant tasks. While there is abundant evidence that an operant lever press requires intact dopamine (DA) D1 transmission in the nucleus accumbens (ACB) and in the basolateral amygdala (BLA), there is conflicting evidence regarding the specific brain sites at which DA mediates a Pavlovian approach response. The present study was designed to compare the effects of ACB and BLA D1 receptor-blockade on an operant and Pavlovian task, while minimizing differences in behavioral response topography. Animals were trained on either a Pavlovian cued approach task or an operant cued nosepoke task. In the Pavlovian approach task, a tone signaled a pellet delivery to which animals responded with a head entry into a food compartment. In the operant nosepoke task, animals were trained to emit a nosepoke in response to the same tone, in order to trigger a pellet delivery. Bilateral microinfusions of the D1 antagonist SCH 23390 (0, 1 or 2 microgram/side) into either the ACB or the BLA produced a dose-dependent disruption of the operant nosepoke. In contrast, the Pavlovian cued approach response was unaffected by D1 antagonist microinfusions into either the ACB or the BLA. In addition, infusion of SCH 23390 into either site suppressed general locomotion. The results suggest a dissociation of the anatomical substrates mediating an operant nosepoke and a Pavlovian approach, despite similar response topographies. These findings are consistent with the notion that D1 activity at the ACB and BLA plays a role in the expression of operant responses, but not in the expression of Pavlovian approach responses
Thesis (PhD) — Boston College, 2010
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Psychology
Maslava, Natallia. « Signal Transduction : Dopamine D1 receptor-induced signaling cascades in the striatum in Parkinson's disease ». Thesis, Malmö högskola, Fakulteten för hälsa och samhälle (HS), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-24697.
Texte intégralParkinson's disease is one of the most common neurodegenerative diseases affecting up to ten million people worldwide. The disease is caused by the death of neurons that produce the neurotransmitter dopamine. To compensate the lack of dopamine, patients are treated with levodopa, a precursor of dopamine. Levodopa invariably causes a troublesome complication in the form of unwanted involuntary movements known as “levodopa-induced dyskinesia”. Many studies have pointed out that levodopa-induced dyskinesia occurs due to increased phosphorylation of extracellular signal regulated kinases 1 and 2 (ERK1/2). It is important to understand how ERK1/2 is activated in Parkinson's disease by dopamine receptors in order to develop a reasonable treatment for LID or to prevent this condition in levodopa-treatment of Parkinsonian patients. The aim of this study was to investigate the pathways induced by the dopamine D1 receptor in striatal “slices” from parkinsonian rats. The level of phosphorylation of ERK1/2 (pERK 1/2) was measured by Western blot. Along the pathways leading to the activation of pERK 1/2 different target molecules were blocked. The clear alterations in the dopamine D1 induced signaling pathways were observed. Activation of the dopamine D1 receptor induced phosphorylation of ERK1/2, the dopamine D1 receptor-mediated increase of pERK was shown to be dependent on calcium signaling, and the DA D1 receptor-induced phosphorylation of ERK1/2 was possible to modulate via Group 1 metabotropic glutamate receptor pathway. The project is to be continued in the future and more target molecules should be tested in order to draw definite conclusions about how these signaling pathways interact with each other and how to regulate them effectively. During the project, Western blot technique was improved and optimized for the future experiments of the present study.
Robinson, Pierre. « L'influence d'une stimulation du récepteur dopaminergique D1 sur l'agrégation de la protéine Huntingtine mutante ». Thèse, Université du Québec à Trois-Rivières, 2008. http://depot-e.uqtr.ca/1782/1/030037951.pdf.
Texte intégralJohnson, Bonnie Jean. « Neural mechanisms underlying plasticity of D1 and D2 dopamine receptor mediation of sensorimotor behavior in rats depleted of forebrain dopamine as neonates / ». The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487843688957584.
Texte intégralNg, Samuel. « Extracellular calcium in dopamine D1-receptor mediated growth hormone release from Chinese grass carp pituitary cells / ». Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1947104X.
Texte intégralPenney, Christine. « Determining dopamine D1 receptor changes in cocaine abusers using positron emission tomography and SCH 23390 ». Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30828.
Texte intégralJin, Hui. « Role of specific amino acid residues in the intracellular domains of human D1 dopamine receptors ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq49964.pdf.
Texte intégralYung, Ken Kin Lam. « Ultrastructural localisation of dopamine D1 and D2 receptors in the basal ganglia of the rat ». Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282306.
Texte intégralMcKenna, James. « Sensitivity to Dopamine D1/D2 Receptor Stimulation in Mice Lacking Connexin-32 or Connexin-36 ». ScholarWorks@UNO, 2004. http://scholarworks.uno.edu/td/91.
Texte intégralNolan, Eileen. « The Role of Connexin36 in Dopamine D1/D2 Synergism and its Breakdown in Transgenic Mice ». ScholarWorks@UNO, 2006. http://scholarworks.uno.edu/td/372.
Texte intégralMatsuo, Koji. « Significance of dopamine D1 receptor signalling for steroidogenic differentiation of human induced pluripotent stem cells ». Kyoto University, 2018. http://hdl.handle.net/2433/232124.
Texte intégralPruitt, Douglas L. « The effects of dopamine D1 and D2 antagonists on cocaine-induced CPP in preweanling rats ». CSUSB ScholarWorks, 1994. https://scholarworks.lib.csusb.edu/etd-project/920.
Texte intégralAlbaker, Awatif. « Mutational Analysis to Define the Functional Role of the Third Intracellular Loop of D1-Class Dopaminergic Receptors ». Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35063.
Texte intégralPlouffe, Bianca. « Comprehensive Model of G Protein-coupled Receptor Regulation by Protein Kinase C : Insight from Dopamine D1 and D5 Receptor Studies ». Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20577.
Texte intégralCavarec, Fanny. « Contrôle des activités synchrones oscillatoires pathologiques par le récepteur dopaminergique D3 et le transporteur de la dopamine ». Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAV067/document.
Texte intégralGenetic Absence Epilepsy Rats from Strasbourg (GAERS) and Non-Epileptic-Control rats (NEC) derive from an original Wistar-Hannover rat strain (WH). The onset age of spike-and-waves discharges in GAERS is about 25 days post-natal (P25). In adult GAERS with fully developed epilepsy, dopamine plays a modulatory role in seizure expression. Adult GAERS display an over-expression of dopaminergic D3-receptors (D3R) mRNA as compared to NEC. Expression and function of D3R and dopamine transporter (DAT) are closely related. The aim of this work was to investigate the putative involvement of D3R and DAT during epileptogenesis by measuring their expression and functionality in GAERS before the onset of epilepsy (P25). D3R expression and functionality was investigated by [125I]-PIPAT autoradiography and quinpirole-induced yawning, respectively, in the three strains of rats (GAERS, NEC and WH) in adults, P14 and P21. DAT expression was investigated in GAERS and NEC by [123I]-Ioflupane SPECT imaging in adults and [3H]-GBR12935 autoradiography in adults, P14 and P21 rats. Furthermore, DAT activity was assessed by 3H-dopamine reuptake in synaptosomal living fractions of striatum, cortex and hippocampus of adult rats in the three strains. The involvement of the D3R was further investigated by video-EEG recording following systemic injections of either D3R agonist (quinpirole and PD128907) or antagonists (SB277011 and SR21502). Autoradiography showed an over-expression of D3R in GAERS in structures known to be involved in seizure initiation (somato-sensory cortex), seizure control (nucleus accumbens,) as well as in other structures (anterior thalamus, olfactory tubercles and islands of Calleja) at P14 and P21, as compared to age-matched NEC and WH. As in adults, this over-expression was associated with a higher number of quinpirole-induced yawns in GAERS at P14 and P21. Neither SPECT imaging nor autoradiographic data revealed any modification in DAT expression between the three strains in adults, however at P14 and P21 DAT is overexpressed in the striatum of GAERS rats. However, we found a consistent increase in 3H-dopamine reuptake in adult GAERS as compared to NEC and WH in the functional assay supporting an increase in dopamine translocation velocity. Administrations of D3R agonists increased spike-and-wave discharges, whereas antagonists had no effect. Furthermore, the chronic injection of aripiprazole (an atypical neuroleptic known to stabilize dopamine release) to GAERS pups reduced the number of seizures in adults along with a decreased expression of D3R. Preliminary data using lentiviral infection with shRNA anti-D3R also support reduced seizure number in adult GAERS rats. Our results suggest that an over-expression of functional D3R already exists before the onset of seizures in GAERS and that, despite a lack of changes in DAT expression, functional changes in this transporter occur in adults. They further support that a profound modification in basal ganglia function together with changes in D3R could be a conditional factor for epileptogenesis. The dopaminergic system appears persistently altered in spontaneous epileptic rats, which could contribute to the development of the chronic epileptic state and may represent a potential new target for antiepileptic therapies and/or improvement of quality of life of epileptic patients
Kennedy, Matthew David. « Regulation of dopamine D1-D3 receptor protein, mRNA and dopamine turnover in a PCP model of schizophrenia : influence of chronic anti-psychotic drug treatment ». Thesis, University of Strathclyde, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249056.
Texte intégralChong, Victor Z. Mishra Ram K. « Differential regulation of synapsin II expression by dopamine-D1 and -D2 receptors in the rat brain / ». [Hamilton, Ont.] : McMaster University, 2005.
Trouver le texte intégral吳毅賢 et Samuel Ng. « Extracellular calcium in dopamine D1-receptor mediated growth hormone release from Chinese grass carp pituitary cells ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31219755.
Texte intégralZhang, Dongling. « Delineation of the structure-function relationships within the fourth intracellular loop of dopamine D1-like receptors ». Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26823.
Texte intégralHara, Yuko. « Dopamine-dependent plasticity and subcellular locations of dopamine D1 receptors : in relation to glutamate NMDA receptors and endogenous opioids in the nucleus accumbens, implications for schizophrenia / ». Access full-text from WCMC, 2008. http://proquest.umi.com/pqdweb?did=1528441261&sid=22&Fmt=2&clientId=8424&RQT=309&VName=PQD.
Texte intégral