title: Urinary Lipid Peroxidation Byproducts: Are They Relevant for Predicting Neonatal Morbidity in Preterm Infants?
abstract: Preterm infants have an immature antioxidant system; however, they frequently require supplemental oxygen. Oxygen-free radicals cause both pulmonary and systemic inflammation, and they are associated with increased morbidity and mortality. Consequently, screening of metabolite profiles representing the amount of lipid peroxidation is considered of great relevance for the evaluation of in vivo oxidative stress and derived inflammation and damage. Ranges for total relative contents of isoprostanes (IsoPs), isofurans (IsoFs), neuroprostanes (NeuroPs), and neurofurans (NeuroFs) within targeted SpO2 ranges were determined in urine samples of 254 preterm infants<32 weeks of gestation within the frame of two randomized, controlled, and blinded clinical trials employing ultra-performance liquid chromatography-tandem mass spectrometry. A total of 536 serial urine samples collected during the first 4 weeks after birth in recruited infants who did not develop free radical associated conditions were analyzed. A reference range for lipid peroxidation byproducts, including isoprostanes, isofurans, neuroprostanes, and neurofurans, was calculated and possible correlations with neonatal conditions were investigated. Urinary elimination of isofurans in the first 4 days after birth correlated with later development of bronchopulmonary dysplasia. Our observations lead to the hypothesis that early urinary determination of lipid peroxidation byproducts, especially isofurans, is relevant to predict development of chronic lung conditions.
authors.affiliation: 1 Neonatal Research Group, Health Research Institute La Fe , Valencia, Spain .
authors.forename: Julia
authors.initials: J
authors.lastname: Kuligowski
authors.affiliation: 2 Division of Neonatology, University and Polytechnic Hospital La Fe , Valencia, Spain .
authors.forename: Marta
authors.initials: M
authors.lastname: Aguar
authors.affiliation: 3 Division of Neonatology, Department of Pediatrics, Erasmus Medical Center-Sophia Children's Hospital , Rotterdam, the Netherlands .
authors.forename: Denise
authors.initials: D
authors.lastname: Rook
authors.affiliation: 1 Neonatal Research Group, Health Research Institute La Fe , Valencia, Spain .
authors.forename: Isabel
authors.initials: I
authors.lastname: Lliso
authors.affiliation: 1 Neonatal Research Group, Health Research Institute La Fe , Valencia, Spain .
authors.forename: Isabel
authors.initials: I
authors.lastname: Torres-Cuevas
authors.affiliation: 1 Neonatal Research Group, Health Research Institute La Fe , Valencia, Spain .
authors.forename: Javier
authors.initials: J
authors.lastname: Escobar
authors.affiliation: 4 Department of Safety and Sustainability, Leitat Technological Center , Valencia, Spain .
authors.forename: Guillermo
authors.initials: G
authors.lastname: Quintás
authors.affiliation: 2 Division of Neonatology, University and Polytechnic Hospital La Fe , Valencia, Spain .
authors.forename: María
authors.initials: M
authors.lastname: Brugada
authors.affiliation: 1 Neonatal Research Group, Health Research Institute La Fe , Valencia, Spain .
authors.forename: Ángel
authors.initials: Á
authors.lastname: Sánchez-Illana
authors.affiliation: 3 Division of Neonatology, Department of Pediatrics, Erasmus Medical Center-Sophia Children's Hospital , Rotterdam, the Netherlands .|5 Department of Pediatrics, VU University Medical Center , Amsterdam, the Netherlands .|6 Department of Pediatrics, Emma Children's Hospital , Academic Medical Center, Amsterdam, the Netherlands .
authors.forename: Johannes B
authors.initials: JB
authors.lastname: van Goudoever
authors.affiliation: 1 Neonatal Research Group, Health Research Institute La Fe , Valencia, Spain .|2 Division of Neonatology, University and Polytechnic Hospital La Fe , Valencia, Spain .
authors.forename: Máximo
authors.initials: M
authors.lastname: Vento
mesh_terms: D015415:Biomarkers / Q000652:urine*; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D007234:Infant, Premature / Q000652:urine*; D015227:Lipid Peroxidation; D008055:Lipids / Q000737:chemistry* / Q000652:urine
chemical_list: D015415:Biomarkers; D008055:Lipids