In this thesis work, ultra-high-performance liquid chromatography coupled with mass spectrometry (UHPLC-MS) was used to determine the profile and concentration of free and conjugated bile salts in bronchoalveolar lavage (BAL) and plasma samples obtained from term and preterm rabbits kept in normoxia (O₂, 21%) or hyperoxia (O₂, 70%) for a period of 14 days after birth, with the aim of identifying biomarkers of lung injury. Exposure to a high concentration of oxygen induces lung damage similar to that observed in newborns with BPD. An accurate and precise analytical method was developed, allowing the identification and quantification of analytes in both biological matrices. Subsequently, the analysis of real samples and a statistical analysis of the obtained data were carried out.
In questo lavoro di tesi si è utilizzata la cromatografia liquida ad ultra-alta-prestazione accoppiata a spettrometria di massa (UHPLC-MS) per determinare il profilo e la concentrazione dei sali biliari liberi e coniugati in campioni di lavaggio broncoalveolare (BAL) e di plasma ottenuti da conigli a termine e pretermine mantenuti in normossia (O₂, 21%) o in iperossia (O₂, 70%) per un periodo di 14 giorni dopo la nascita, al fine di determinare dei biomarcatori di danno polmonare. L’esposizione ad un’elevata concentrazione di ossigeno induce danni polmonari simili a quelli osservati in neonati con BPD. È stato sviluppato un metodo analitico esatto e preciso che permette di identificare e quantificare gli analiti in entrambe le matrici biologiche. Successivamente è stata condotta l’analisi dei campioni reali e un’analisi statistica dei dati ottenuti.
Sviluppo e validazione di un metodo UHPLC-MS per la determinazione del profilo dei sali biliari in campioni biologici da un modello animale di displasia broncopolmonare
BORTOLATO, CHIARA
2024/2025
Abstract
In this thesis work, ultra-high-performance liquid chromatography coupled with mass spectrometry (UHPLC-MS) was used to determine the profile and concentration of free and conjugated bile salts in bronchoalveolar lavage (BAL) and plasma samples obtained from term and preterm rabbits kept in normoxia (O₂, 21%) or hyperoxia (O₂, 70%) for a period of 14 days after birth, with the aim of identifying biomarkers of lung injury. Exposure to a high concentration of oxygen induces lung damage similar to that observed in newborns with BPD. An accurate and precise analytical method was developed, allowing the identification and quantification of analytes in both biological matrices. Subsequently, the analysis of real samples and a statistical analysis of the obtained data were carried out.| File | Dimensione | Formato | |
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Elaborato di tesi laurea magistrale_Chiara Bortolato (matr. 2122106).pdf
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https://hdl.handle.net/20.500.12608/92809