2026-09-14T09:05:15Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/80512023-11-18T01:05:26Zcom_10259_5827com_10259_5086com_10259_2604col_10259_5828

00925njm 22002777a 4500 dc Cavia Saiz, Mónica author Arnaez, Juan author Cilla, Amaia author Puente, Laura author García-Miralles, Laura C. author Muñiz Rodríguez, Pilar author 2023-06 The clinical relevance of stress biomarkers in newborns is well established. Currently, oxidative stress (OS) parameters are seen to play an important role in neonatal resuscitation guidelines, and a link has been observed between the amount of oxygen delivered and the level of OS and the development of various pathologies. The aim of the current study was to investigate changes in neonatal plasma and urine OS status during the first hours after birth. A lower antioxidant capacity (TAC) and higher levels of malondialdehyde in blood were observed in newborns at the time of birth compared with results 48 h postnatally. The urine revealed a significant and progressive increase in TAC and creatinine during the first 36 h of life, with a progressive decline thereafter. Meanwhile, malondialdehyde in urine samples showed no significant differences over time. Overall, the correlation between blood and urine parameters was poor, except for the relationship between umbilical vein glutathione reduced/oxidized ratio and urine malondialdehyde (r = 0.7; p = 0.004) and between TAC in the umbilical artery and urine (r = −0.547; p = 0.013). The biomarkers evaluated in this study could be established as reference values for neonatal OS. http://hdl.handle.net/10259/8051 10.3390/antiox12061249 2076-3921 Oxidative stress Infant Birth Cord blood Glutathione Malondialdehyde Carbonyl Creatinine Biomarkers of Oxidative Stress in Healthy Infants within the First Three Days after Birth