Urinary Lipid Peroxidation Byproducts: Are They Relevant for Predicting Neonatal Morbidity in Preterm Infants?

Autores de IIS La Fe

• Julia Kuligowski

  Autor

• Marta Aguar Carrascosa

  Autor

• Isabel Lliso Escudero

  Autor

• María Isabel Torres Cuevas

  Autor

• Justo Javier Escobar Cubiella

  Autor

• Guillermo Quintas Soriano

  Autor

• María De Brugada Montaner

  Autor

• Ángel Sánchez Illana

  Autor

• Máximo Vento Torres

  Autor

Participantes ajenos a IIS La Fe

• Rook D
• van Goudoever JB

Grupos

• Perinatología

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 SpO(2) 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. Antioxid. Redox Signal. 23, 178-184.

Keywords

• OXIDATIVE STRESS; OXYGEN; RESUSCITATION; DISEASE