• Bálint Nagy, Lívia Szélig, Szilárd Rendeki, Csaba Loibl, Barbara Rézmán, János Lantos, Lajos Bogár, and Csaba Csontos.
• Department of Anesthesiology and Intensive Therapy, University of Pécs, HU-7622 Pécs, Hungary. Electronic address: balintjanosnagy@yahoo.com.
• J Crit Care. 2015 Feb 1;30(1):162-6.

PurposeSevere burn is a life-threatening condition. Many trials discuss the role of matrix metalloproteinases and tissue inhibitor of metalloproteinases in diseases generating systemic inflammatory response syndrome, and in some, their prognostic importance has been established. We aimed to describe the time courses of the aforementioned system and to evaluate the difference between survivors and nonsurvivors in burns.MaterialsThirty-one patients were enrolled. Blood samples were collected on admission and on the 5 consecutive days. Circulating matrix metalloproteinase 9 (MMP-9) and tissue inhibitor of metalloproteinase 1 (TIMP-1) have been measured. Healthy individuals were invited as controls.ResultsTissue inhibitor of metalloproteinase 1 increased in the burn group (P < .001) by day 2 and remained elevated thereafter. Plasma MMP-9 and MMP-9/TIMP-1 were already elevated on admission (P < .001) and decreased in tendency thereafter. In burned patients, significantly lower MMP-9 were noted on days 4 to 6 as MMP-9/TIMP-1 were also lower on days 3 to 6 (P < .01) compared with controls. We experienced difference regarding survival on days 5 and 6 by TIMP-1 (P < .05).ConclusionsOur research is the first follow-up study elucidating the dynamic changes of MMP-9-TIMP-1 system in severe burns. Alteration of MMP-9-TIMP-1 balance might influence systemic inflammatory response and related mortality. Matrix metalloproteinase 9 might be a good injury marker in burns after an extensive trial.Copyright © 2014 Elsevier Inc. All rights reserved.

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