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<dc:title xml:lang="fr">Conséquences comportementales et émotionnelles à court et long terme d’un stress de séparation maternelle néonatale chez le rat</dc:title>
<dcterms:alternative xml:lang="en">Short and long-term behavioral and emotional consequences of neonatal maternal separation stress in rats</dcterms:alternative>
<dc:subject xml:lang="fr">Stress précoce</dc:subject>
<dc:subject xml:lang="fr">Neurodéveloppement</dc:subject>
<dc:subject xml:lang="fr">Nociception</dc:subject>
<dc:subject xml:lang="fr">Contagion émotionnelle</dc:subject>
<dc:subject xml:lang="fr">Neuropathie</dc:subject>
<dc:subject xml:lang="en">Early-life stress</dc:subject>
<dc:subject xml:lang="en">Neurodevelopment</dc:subject>
<dc:subject xml:lang="en">Nociception</dc:subject>
<dc:subject xml:lang="en">Emotional contagion</dc:subject>
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<tef:elementdEntree autoriteExterne="040736709" autoriteSource="Sudoc">Séparation d'avec la mère</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="027658910" autoriteSource="Sudoc">Développement neurologique</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">L'adversité précoce, incluant divers stress périnataux et infantiles, peut affecter le développement cérébral de l’enfant et sa santé à long-terme en raison de son impact durant une période critique de plasticité cérébrale. Au cours de cette thèse, l'impact de ce stress précoce a été examiné via un modèle de séparation maternelle néonatale (SMN) chez le rat. Ce travail adopte une approche longitudinale et centrée sur la douleur en évaluant le neurodéveloppement en début de vie, puis la contagion émotionnelle à la douleur (un aspect de l'empathie) et le développement de neuropathies à l'âge adulte. Nous avons pu démontrer que la SMN n'affecte pas les fonctions sensorimotrices essentielles à la survie, mais altère durablement des fonctions comme la nociception. La contagion émotionnelle à la douleur a été altérée, avec des comportements prosociaux réduits. Concernant la neuropathie, les rats SMN ont montré une hypersensibilité retardée et moins marquée que les témoins, résultat inattendu. Notre étude montre que certaines fonctions résistent au stress néonatal, tandis que la nociception et les comportements sociaux sont durablement affectés.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Adverse childhood experiences, including various perinatal and infantile stresses, can affect a child's brain development and long-term health through its impact during a critical period of brain plasticity. In this thesis, the impact of this early stress was examined using a neonatal maternal separation (NMS) model in rats. This work takes a longitudinal, pain-focused approach, assessing neurodevelopment in early life, followed by emotional contagion to pain (an aspect of empathy) and the development of neuropathies in adulthood. We were able to demonstrate that neonatal stress does not affect the motor functions essential for survival, but durably alters functions such as nociception. Emotional contagion to pain was impaired, with reduced prosocial behaviour. Regarding neuropathy, NMS rats showed a delayed and a less intense hypersensitivity compared to controls, revealing unexpected results. Our study demonstrates that some functions are resistant to neonatal stress, while nociception and social behaviours are durably affected.</dcterms:abstract>
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