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<dc:title xml:lang="en">Vasoactive intestinal peptide (VIP) controls the development of the nervous system and its functions through VPAC1 receptor signalling : lessons from microcephaly and hyperalgesia in VIP-deficient mice</dc:title>
<dcterms:alternative xml:lang="fr">Action du peptide vasoactif intestinal (VIP) sur les récepteurs VPAC1 pour contrôler le développement du système nerveux et ses fonctions : études des souris microcéphales et hyperalgiques par déficience en VIP</dcterms:alternative>
<dc:subject xml:lang="fr">Peptide vasoactif intestinal</dc:subject>
<dc:subject xml:lang="fr">Neurogénèse</dc:subject>
<dc:subject xml:lang="fr">Cycle cellulaire</dc:subject>
<dc:subject xml:lang="fr">Checkpoint kinase 1</dc:subject>
<dc:subject xml:lang="fr">Microcephalin</dc:subject>
<dc:subject xml:lang="fr">Différentiation neuronale</dc:subject>
<dc:subject xml:lang="fr">Microcéphalie</dc:subject>
<dc:subject xml:lang="fr">Moelle épinière, stress maternel</dc:subject>
<dc:subject xml:lang="fr">Douleur</dc:subject>
<dc:subject xml:lang="en">Vasoactive intestinal peptide</dc:subject>
<dc:subject xml:lang="en">Neurogenesis</dc:subject>
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<dc:subject xml:lang="en">Cortical development</dc:subject>
<dc:subject xml:lang="en">Checkpoint kinase 1</dc:subject>
<dc:subject xml:lang="en">Microcephalin Neural differentiation</dc:subject>
<dc:subject xml:lang="en">Microcephaly</dc:subject>
<dc:subject xml:lang="en">Spinal cord, maternal stress</dc:subject>
<dc:subject xml:lang="en">Pain</dc:subject>
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<tef:elementdEntree autoriteExterne="027658910" autoriteSource="Sudoc">Développement neurologique</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="078710197" autoriteSource="Sudoc">Microcéphalie</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="114603863" autoriteSource="Sudoc.FMesh">Récepteur au peptide intestinal vasoactif (VIP) et au PACAP</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">Mes études doctorales ont permis de démontrer que les souris déficientes en VIP présentent une microcéphalie ayant principalement une origine maternelle qui affecte secondairement le développement de la substance blanche. Cette production placentaire par les lymphocytes T pourrait être affectée dans des pathologies du système immunitaire. De plus, nos données indiquent qu’une déficience en VIP prédispose à l'apparition de troubles sensoriels, en particulier de la nociception. Il est donc possible que les déficits précoces de développement du cerveau murin et l'apparition de l'hypersensibilité cutanée mécanique et thermique froide soient deux facettes d'une même pathologie. Des mesures d'activité de décharge spontanée des neurones dans le thalamus sensoriel chez des mâles adultes anesthésiés ont montré que les neurones des animaux KO sont hyper-excités, ce qui suggère un traitement aberrant des informations, notamment nociceptives, ou que l'activité inhibitrice des interneurones des réseaux locaux est réduite.</dcterms:abstract>
<dcterms:abstract xml:lang="en">The studies carried out during my PhD demonstrate that VIP-deficient mice suffer from microcephaly and as well as white matter deficits mainly due to the absence of maternal VIP during embryogenesis, Placental secretion of VIP is dependent on T lymphocytes and could be altered in pathologies of the immune system. Moreover, our data links VIP deficiency to sensory alterations, specifically, the nociceptive system. Thus, it is possible that early developmental defects and hypersensitivity to mechanical and cold stimuli are two manifestations of the same pathology. This hypothesis was reinforced following analysis of spontaneous firing patterns of neurons in the sensory thalamus of anesthetized adult males. Neurons from VIP-KO mice are hyperactive, which suggests aberrant local processing of nociceptive input or that the inhibitory inputs from local interneuron networks is reduced.</dcterms:abstract>
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