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<dc:title xml:lang="fr">Caractérisation de la fonction vasculaire dans les vaisseaux sanguins isolés en réponse au glucose élevé et de l'artère mammaire interne de patients diabétiques</dc:title>
<dcterms:alternative xml:lang="en">Characterization of vascular function of isolated blood vessels in response to high glucose and internal mammary artery from diabetic patients</dcterms:alternative>
<dc:subject xml:lang="fr">Glucose élevé</dc:subject>
<dc:subject xml:lang="fr">Dysfonction endothéliale</dc:subject>
<dc:subject xml:lang="fr">Stress oxydatif</dc:subject>
<dc:subject xml:lang="fr">SGLT</dc:subject>
<dc:subject xml:lang="fr">Artères mammaires internes humaines</dc:subject>
<dc:subject xml:lang="en">High glucose</dc:subject>
<dc:subject xml:lang="en">Endothelial dysfunction</dc:subject>
<dc:subject xml:lang="en">Oxidative stress</dc:subject>
<dc:subject xml:lang="en">Human internal mammary arteries</dc:subject>
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<tef:elementdEntree autoriteExterne="02727067X" autoriteSource="Sudoc">Pharmacologie cardiovasculaire</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">D’abord, nous avons visé à établir un modèle ex vivo de la dysfonction endothéliale induite par le glucose élevé (HG) dans les artères isolées de rat Wistar mâle et porc. Notre but était de clarifier le rôle des SGLT1/2 dans les cellules endothéliales dans les conditions HG pour évaluer l'effet protecteur des gliflozines sur la fonction endothéliale. Cependant, HG n'a pas affecté la relaxation dépendant de l'endothélium. L'absence d'effet d’HG pourrait être liée aux facteurs, tels que les conditions d'incubation, le genre, l'âge, la souche, l’espèce d'animal et les conditions de logement. Enfin, nous avons caractérisé les artères mammaires internes humaines (AMI) de 58 patients ayant subi un pontage coronarien au Nouvel Hôpital Civil de Strasbourg. Nous avons trouvé l'association du diabète et de l'hypertension au niveau accru du stress oxydatif dans les AMI humaines. Les niveaux d'expression de la eNOS, des SGLT et du système d’angiotensine local doivent être étudiés plus en détail.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Firstly, we aimed to establish an ex vivo model of high glucose (HG)-induced endothelial dysfunction in isolated arteries from male Wistar rat and porc. Then, our goal was to clarify the contribution of SGLT1/2 in endothelial cells under HG conditions to evaluate the protective effect of gliflozins on the endothelial function. However, HG did not affect the endothelium-dependent relaxation response in all tested types of artery. The lack of effect of HG might be related to certain factors, such as the incubation conditions, gender, age, strain, species of studied animals, and conditions of housing of animals. Secondly, we characterized human internal mammary arteries (IMA) of 58 patients underwent coronary artery bypass grafting in the New Civil Hospital of Strasbourg. We found the association of diabetes and hypertension in the enhanced level of oxidative stress in human IMA. The expression levels of eNOS, SGLTs and the components of angiotensin system need to be further investigated.</dcterms:abstract>
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