Abstract
Objective
To determine xanthine oxidase and superoxide dismutase activities, lipid peroxidation, protein carbonylation, and total radical-trapping antioxidant parameter in survivors and nonsurvivors patients with severe burn injury.
Design and setting
Prospective, comparative observational study in an intensive care unit, burn division, in a trauma hospital.
Patients
Twenty-five consecutive patients who met the established criteria for severe burn injury (total burn surface area of more than 30%).
Measurements and results
Plasma thiobarbituric acid reactive species and protein carbonyls levels were significantly higher in nonsurvivors than in survivors at 0 and 6 h. Elevated xanthine oxidase activity at 0 h was associated with adverse outcome after burn injury. In contrast, plasma superoxide dismutase activity and total radical-trapping antioxidant parameter did not differ significantly between nonsurvivors and survivors at any time point.
Conclusions
For the first time we demonstrate the value of oxidative parameters, namely thiobarbituric acid reactive species, protein carbonyls, and xanthine oxidase activity, in identifying burn patients with a poor prognosis. Whether these parameters are merely markers of clinical course, or whether they signal specific deleterious effects of oxidative stress during the burn injury remains to be elucidated.
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Acknowledgements
This work was supported by grants from CNPq, FAPERGS (Brazilian governmental agencies for research support), and the Hospital de Clínicas de Porto Alegre.
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Ritter, C., Andrades, M., Guerreiro, M. et al. Plasma oxidative parameters and mortality in patients with severe burn injury. Intensive Care Med 29, 1380–1383 (2003). https://doi.org/10.1007/s00134-003-1833-9
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DOI: https://doi.org/10.1007/s00134-003-1833-9