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     <dc:title xml:lang="fr">Surveillance des concentrations de cortisol chez des patients atteints d’un syndrome de Cushing traités par Osilodrostat : spectrométrie de masse vs immuno-analyse</dc:title>
     <dcterms:alternative xml:lang="en">Monitoring of concentrations of cortisol in patients with asyndrome of Cushing treated by Osilodrostat: spectrometry of mass vs immunoanalysis</dcterms:alternative>
     <dc:subject xml:lang="fr">Spectrométrie de masse </dc:subject><dc:subject xml:lang="fr">Chromatographie liquide </dc:subject><dc:subject xml:lang="fr">Osilodrostat </dc:subject><dc:subject xml:lang="fr">Syndrome de Cushing </dc:subject><dc:subject xml:lang="fr">Métabolites </dc:subject><dc:subject xml:lang="fr">Cortisol </dc:subject><dc:subject xml:lang="fr">Immunoanalyses </dc:subject><dc:subject xml:lang="fr">Spécificité</dc:subject>
     <dc:subject xml:lang="en">Mass spectrometry </dc:subject><dc:subject xml:lang="en">liquid Chromatography </dc:subject><dc:subject xml:lang="en">Osilodrostat </dc:subject><dc:subject xml:lang="en">Cushing’s Syndrome </dc:subject><dc:subject xml:lang="en">Metabolites </dc:subject><dc:subject xml:lang="en">Cortisol </dc:subject><dc:subject xml:lang="en">Immunoassays </dc:subject><dc:subject xml:lang="en">Specificity</dc:subject>
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						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="029677513">Cushing, Syndrome de</tef:elementdEntree>
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						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="033071446">Hydrocortisone</tef:elementdEntree>
					</tef:vedetteRameauNomCommun><tef:vedetteRameauNomCommun>
						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="027394069">Spectrométrie de masse </tef:elementdEntree>
					</tef:vedetteRameauNomCommun><tef:vedetteRameauNomCommun>
						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="027473244">Chromatographie en phase liquide</tef:elementdEntree>
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						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="029680026">Évaluation médicale</tef:elementdEntree>
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     <dcterms:abstract xml:lang="fr">Cette thèse compare l'efficacité de la spectrométrie de masse couplée à la chromatographie liquide  par rapport à l’immunoanalyse dans le suivi des patients présentant un syndrome de Cushing et  traités par Osilodrostat. La méthode par spectrométrie de masse offre une spécificité élevée, cruciale  au cours de ce traitement, où une accumulation de précurseurs stéroïdiens peut se produire. Elle  permet une détection précise du cortisol et d'autres métabolites, de façon simultanée, minimisant  les réactions croisées rencontrées par immunoanalyse. En effet, une surestimation des  concentrations plasmatiques de cortisol peut masquer une insuffisance surrénalienne iatrogène. Le  recours aux dosages de cortisol par spectrométrie de masse s'avère indispensable pour une gestion  optimale du traitement par Osilodrostat.</dcterms:abstract>
     <dcterms:abstract xml:lang="en">This thesis compares the efficacy of liquid chromatography coupled with mass spectrometry to  immunoassay, in monitoring patients treated with Osilodrostat for Cushing's syndrome. The mass  spectrometry provides high specificity, crucial during the treatment, where a buildup of metabolites  can occur. It allows for accurate detection of cortisol and other metabolites, minimizing the  interferences of immunoassays. Indeed, an overestimation of plasma cortisol concentrations may  mask an iatrogenic adrenal insufficiency. The dosages of cortisol by mass spectrometry proves  essential for an optimal therapy management.</dcterms:abstract>
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