Clinical Chemistry
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Clinical Chemistry 41: 867-871, 1995;
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Clinical Chemistry, Vol 41, 867-871, Copyright © 1995 by American Association for Clinical Chemistry

Prognostic role of antioxidant enzymes in sepsis: preliminary assessment

A Warner, A Bencosme, D Healy and C Verme
Department of Pathology and Laboratory Medicine, University of Cincinnati, OH, USA.

The prognostic potential of the antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT) was evaluated in sepsis. Enzyme concentrations were determined in samples obtained from septic patients at time of diagnosis. Statistically significant increases in activities of total plasma SOD (P < 0.003, n = 32), erythrocyte (RBC) SOD (P < 0.007, n = 16), plasma CAT (P < 0.0001, n = 32), and RBC CAT (P < 0.005, n = 16) were found in septic patients when compared with healthy adult controls (n = 7). Further, within the group of septic patients, statistically significant differences were found for total plasma SOD (P < 0.05) and plasma CAT (P < 0.009) (but not for RBC determinations) when survivors (n = 15) were compared with nonsurvivors (n = 17). No significant differences were found for either plasma or RBC enzyme concentrations when patients who developed adult respiratory distress syndrome were compared with those who did not. The most striking finding was that plasma total SOD values of > 10 kU/L were found in 7 of 21 (30%) patients who did not survive their sepsis and that these values did not overlap with any surviving patients or controls. However, while high total plasma SOD activity appears to have some potential as a prognostic indicator, lower values (0.0-8.8 kU/L) do not. For plasma CAT, despite finding statistically significant differences between survivors and nonsurvivors, the substantial overlap in the values obtained for the two groups limits the practical prognostic potential of this enzyme.


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X. Cui, C. Parent, H. Macarthur, S. D. Ochs, E. Gerstenberg, S. Solomon, Y. Fitz, R. L. Danner, S. M. Banks, C. Natanson, et al.
Severity of sepsis alters the effects of superoxide anion inhibition in a rat sepsis model
J Appl Physiol, October 1, 2004; 97(4): 1349 - 1357.
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Copyright © 1995 by the American Association for Clinical Chemistry.