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<dc:title xml:lang="fr">Mise en place de méthodologies analytiques et de modèles cellulaires permettant l'identification d'éléments potentiellement toxiques présents dans l’aérosol d'e-cigarette</dc:title>
<dcterms:alternative xml:lang="en">Setting up analytical methodologies and cellular models to identify potentially toxic elements present in e-cigarette aerosol</dcterms:alternative>
<dc:subject xml:lang="fr">E-liquide</dc:subject>
<dc:subject xml:lang="fr">Arôme</dc:subject>
<dc:subject xml:lang="fr">Barrière alvéolo-capillaire</dc:subject>
<dc:subject xml:lang="fr">Aérosol</dc:subject>
<dc:subject xml:lang="fr">Cytotoxicité</dc:subject>
<dc:subject xml:lang="fr">Méthode analytique</dc:subject>
<dc:subject xml:lang="en">E-liquid</dc:subject>
<dc:subject xml:lang="en">Flavour</dc:subject>
<dc:subject xml:lang="en">Alveolar-capillary barrier</dc:subject>
<dc:subject xml:lang="en">Aerosol</dc:subject>
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<dcterms:abstract xml:lang="fr">Les nouveaux systèmes de délivrance de nicotine, dont la cigarette électronique (CE), sont régulièrement présentés comme des outils de substitution nicotinique. Les autorités de santé restent prudentes quant à l’utilisation de tels dispositifs étant donné le manque de données toxicologiques. Mon projet de thèse vise à étudier la toxicité en région pulmonaire, des e-liquides (EL), sans nicotine, contenus dans les CE. Les arômes fruits rouges, largement consommés, ont été étudiés et décomposés en 4 arômes distincts (fraise, framboise, myrtille et mûre). Pour ce faire, un nouveau modèle cellulaire de Barrière Alvéolo-Capillaire (BAC) a été validé et a été exposé de manière plus ou moins directe aux EL/aérosols via 3 méthodes d’exposition distinctes. Plusieurs réponses cellulaires dont les modulations de l’intégrité de la barrière et du stress oxydant mitochondrial ont été mises en évidence. Ces réponses cellulaires varient selon la méthode d’exposition et suggèrent que les processus d’aérosolisation ne sont pas sans risque. De plus, l’identification des composés chimiques indique des réponses cellulaires dépendantes de chaque arôme considéré.</dcterms:abstract>
<dcterms:abstract xml:lang="en">New nicotine delivery systems, including the electronic cigarette (EC), are regularly presented as nicotine replacement tools. Health authorities remain cautious about the use of such devices, given the lack of toxicological data. The aim of my thesis project is to study the toxicity of nicotine-free e-liquids (EL) contained in ECs in the pulmonary region. The widely consumed red berry flavours were studied and broken down into 4 distinct flavours (strawberry, raspberry, blueberry and blackberry). To do this, a new cellular model of the Alveolar-Capillary Barrier (ACB) was validated and exposed more or less directly to EL/aerosols via 3 distinct exposure methods. Several cellular responses were identified, including modulations of barrier integrity and mitochondrial oxidative stress. These cellular responses vary according to exposure method, and suggest that aerosolization processes are not risk-free. In addition, the identification of chemical compounds indicates that cellular responses depend on the flavour considered.</dcterms:abstract>
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