Abstract
Reactive oxygen and nitrogen species are considered to play a major role in the pathogenesis of a wide range of human disorders. This may be a particularly important pathogenetic mechanism in the newborn nursery. The phrase “oxygen radical disease of prematurity” has been coined to collectively describe a wide range of neonatal disorders based on the belief that premature newborns are deficient in antioxidant defenses at a time when they are subjected to acute and chronic oxidant stresses. This belief has led to a number of clinical trials of antioxidant therapies being undertaken in neonatal patients. The realization that reactive oxygen species play a critical role in neonatal illnesses has only recently been paralleled by an increased understanding of their physiologic roles. A major concern is that effective scavenging of reactive oxygen species, to attenuate their toxic effects, will also inhibit essential cellular functions such as growth in potential target organs such as lung, brain, intestine, and retina.
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Abbreviations
- AP-1:
-
activator protein-1
- GSH:
-
reduced glutathione
- H2O2:
-
hydrogen peroxide
- N-AC:
-
N-acetyl-L-cysteine
- ·NO:
-
nitric oxide
- O2−·:
-
superoxide anion
- ·OH:
-
hydroxyl radical
- RNS:
-
reactive nitrogen species
- ROS:
-
reactive oxygen species
- SOD:
-
superoxide dismutase
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Supported by a Group grant from the Canadian Institutes of Health Research. Dr. Tanswell holds the Women's Auxiliary Chair in Neonatal Medicine. Dr. Jankov is supported by a Clinician-Scientist Training Programme Fellowship from the Hospital for Sick Children Research Institute and a Postdoctoral Fellowship from the Canadian Lung Association and Canadian Institutes of Health Research.
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Jankov, R., Negus, A. & Tanswell, A. Antioxidants as Therapy in the Newborn: Some Words of Caution. Pediatr Res 50, 681–687 (2001). https://doi.org/10.1203/00006450-200112000-00009
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DOI: https://doi.org/10.1203/00006450-200112000-00009
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