BDNF parabrachio-amygdaloid pathway in morphine-induced analgesia
Autor: | Hugues Dardente, Pierre Veinante, Venetia Zachariou, Ralph J. DiLeone, Florent Barthas, Maysa Sarhan, Jennifer Kaufling, Sophie A. Pawlowski, Ipek Yalcin, Michel Barrot |
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Přispěvatelé: | Institut des Neurosciences Cellulaires et Intégratives (INCI), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Physiologie de la reproduction et des comportements [Nouzilly] (PRC), Institut National de la Recherche Agronomique (INRA)-Institut Français du Cheval et de l'Equitation [Saumur]-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS), Pharamacology and Systems Therapeutics, Icahn School of Medicine at Mount Sinai [New York] (MSSM), Department of Psychiatry, Yale University [New Haven], Centre National de la Recherche Scientifique (UPR3212), University of Strasbourg, Institut des Neurosciences Cellulaires et Intégratives, Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de Tours-Institut Français du Cheval et de l'Equitation [Saumur]-Institut National de la Recherche Agronomique (INRA), Institut National de la Recherche Agronomique (INRA)-Institut Français du Cheval et de l'Equitation [Saumur]-Université de Tours-Centre National de la Recherche Scientifique (CNRS) |
Rok vydání: | 2013 |
Předmět: |
Male
Mice extended amygdala 0302 clinical medicine Neurotrophic factors Pons Neural Pathways Medicine pain Pharmacology (medical) Pain Measurement 0303 health sciences biology morphine Dependovirus Amygdala Analgesics Opioid Psychiatry and Mental health Nociception medicine.anatomical_structure Hyperalgesia brain derived neurotrophic factor Opiate Proto-Oncogene Proteins c-fos Neurotrophin Pain Threshold [SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT] medicine.medical_specialty Dark Adaptation Mice Transgenic 03 medical and health sciences Extended amygdala Internal medicine Animals Maze Learning 030304 developmental biology Pharmacology Brain-derived neurotrophic factor Parabrachial Nucleus business.industry Brain-Derived Neurotrophic Factor Mice Inbred C57BL parabrachio amygdaloid Endocrinology nervous system Rotarod Performance Test Exploratory Behavior biology.protein business Neuroscience 030217 neurology & neurosurgery |
Zdroj: | International Journal of Neuropsychopharmacology International Journal of Neuropsychopharmacology, Oxford University Press (OUP), 2013, 16 (7), pp.1649-1660. ⟨10.1017/S146114571200168X⟩ |
ISSN: | 1469-5111 1461-1457 |
DOI: | 10.1017/s146114571200168x |
Popis: | In addition to its neurotrophic role, brain-derived neurotrophic factor (BDNF) is involved in a wide array of functions, including anxiety and pain. The central amygdaloid nucleus (CeA) contains a high concentration of BDNF in terminals, originating from the pontine parabrachial nucleus. Since the spino-parabrachio-amygdaloid neural pathway is known to convey nociceptive information, we hypothesized a possible involvement of BDNF in supraspinal pain-related processes. To test this hypothesis, we generated localized deletion of BDNF in the parabrachial nucleus using local bilateral injections of adeno-associated viruses in adult floxed-BDNF mice. Basal thresholds of thermal and mechanical nociceptive responses were not altered by BDNF loss and no behavioural deficit was noticed in anxiety and motor tests. However, BDNF-deleted animals displayed a major decrease in the analgesic effect of morphine. In addition, intra-CeA injections of the BDNF scavenger TrkB-Fc in control mice also decreased morphine-induced analgesia. Finally, the number of c-Fos immunoreactive nuclei after acute morphine injection was decreased by 45% in the extended amygdala of BDNF-deleted animals. The absence of BDNF in the parabrachial nucleus thus altered the parabrachio-amygdaloid pathway. Overall, our study provides evidence that BDNF produced in the parabrachial nucleus modulates the functions of the parabrachio-amygdaloid pathway in opiate analgesia. |
Databáze: | OpenAIRE |
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