Analyse des isomères de F2-isoprostanes par chromatographie liquide couplée à la spectrométrie de masse dans la circulation maternelle en fin de grossesse

Authors: Larose, Jessica
Advisor: Bilodeau, Jean-François
Abstract: An oxidative stress is defined as an imbalance between the production of reactive oxygen species and antioxidant defenses of the organism. This imbalance has been associated with preeclampsia, a pathology of the mid-to-late pregnancy. Peroxidation of arachidonic acid generates sixty-four isomers of F2-isoprostanes. The latter are recognized as the most reliable biomarkers of oxidative stress in vivo. A method using liquid chromatography tandem mass spectrometry (HPLC-MS/MS) for the determination of seven isomers of F2-isoprostanes in plasma samples, whole blood and erythrocyte membranes has been developed and validated. The F2-isoprostanes correlated positively with several trans fatty acids in plasma at end of the pregnancy. Unexpectedly, F2-isoprostanes were less abundant in preeclampsia than in control pregnancies at the third trimester.
Document Type: Mémoire de maîtrise
Issue Date: 2013
Open Access Date: 20 April 2018
Permalink: http://hdl.handle.net/20.500.11794/25559
Grantor: Université Laval
Collection:Thèses et mémoires

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