Sustained Impairment of alpha(2A)-Adrenergic Autoreceptor Signaling Mediates Neurochemical and Behavioral Sensitization to Amphetamine
Autor: | Jean-Pol Tassin, Vanessa Houades, Emilie Lucie Doucet, Christophe Lanteri, Laurence Lanfumey, Ana-Clara Bobadilla, Susan J. Sara, Gérard Godeheu |
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Přispěvatelé: | Expression des Gènes et comportement adaptatifs = Molecular Genetics, Neurophysiology and Behavior (NPS-15), Neuroscience Paris Seine (NPS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Biologie Paris Seine (IBPS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Biologie Paris Seine (IBPS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique, Institut National de la Sante et de la Recherche Medicale, Mission Interministerielle de Lutte contre la Drogue et la Toxicomanie, CNRS, Ministere de l'Education Nationale et de la Recherche, Servier Laboratories, Neurosciences Paris Seine (NPS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Biologie Paris Seine (IBPS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Paris Seine (IBPS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Paris Seine (IBPS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC) |
Jazyk: | angličtina |
Rok vydání: | 2013 |
Předmět: |
Male
Microdialysis locus coeruleus cell recording Prefrontal Cortex Adrenergic GTP-Binding Protein alpha Subunits Gi-Go Motor Activity Pharmacology neurochemical sensitization norepinephrine Rats Sprague-Dawley psychostimulants Mice chemistry.chemical_compound Norepinephrine Receptors Adrenergic alpha-2 medicine Animals Amphetamine Biological Psychiatry Autoreceptors Neurons Central Nervous System Sensitization Adrenergic alpha-2 Receptor Antagonists Efaroxan Rats Clonidine Mice Inbred C57BL chemistry G alpha i proteins Autoreceptor Locus coeruleus Locus Coeruleus [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC] in vivo microdialysis medicine.drug |
Zdroj: | Biological Psychiatry Biological Psychiatry, Elsevier, 2013, 74 (2), pp.90-98. ⟨10.1016/j.biopsych.2012.11.029⟩ Biological Psychiatry, 2013, 74 (2), pp.90-98. ⟨10.1016/j.biopsych.2012.11.029⟩ |
ISSN: | 0006-3223 |
DOI: | 10.1016/j.biopsych.2012.11.029⟩ |
Popis: | International audience; Background: In rodents, drugs of abuse induce locomotor hyperactivity, and repeating injections enhance this response. This effect, called behavioral sensitization, persists months after the last administration. It has been shown that behavioral sensitization to amphetamine develops parallel to an increased release of norepinephrine (NE) in the prefrontal cortex (PFC). Methods: Rats and mice were repeatedly treated with amphetamine (1 or 2 mg/kg intraperitoneally, respectively) to obtain sensitized animals. The NE release in the PFC was measured by microdialysis in freely moving mice (n = 55). Activity of locus coeruleus (LC) noradrenergic neurons was determined in anaesthetized rats (n = 15) by in vivo extracellular electrophysiology. The alpha(2A)-adrenergic autoreceptor (alpha(2A)-AR) expression was assessed by autoradiography on brain slices, and G alpha i proteins expression was measured by western blot analysis of LC punches. Results: In sensitized rats LC neurons had a higher spontaneous firing rate, and clonidine-an alpha(2A)-adrenergic agonist-inhibited LC neuronal firing less efficiently than in control animals. Clonidine also induced lower levels of NE release in the PFC of sensitized mice. This desensitization was maintained by a lower density of G alpha i1 and G alpha i2 proteins in the LC of sensitized mice rather than weaker alpha(2A)-AR expression. Behavioral sensitization was facilitated by alpha(2A)-AR antagonist, efaroxan, during amphetamine injections and abolished by clonidine treatment. Conclusions: Our data indicate that noradrenergic inhibitory feedback is impaired for at least 1 month in rats and mice repeatedly treated with amphetamine. This work highlights the key role of noradrenergic autoreceptor signaling in the persistent modifications induced by repeated amphetamine administration. |
Databáze: | OpenAIRE |
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