• Journal of critical care · Jun 2019

    Multicenter Study Observational Study

    Persistently high circulating tissue inhibitor of matrix metalloproteinase-1 levels in non-survivor brain trauma injury patients.

    • Leonardo Lorente, María M Martín, Luis Ramos, Mónica Argueso, Juan J Cáceres, Jordi Solé-Violán, Alejandro Jiménez, Juan M Borreguero-León, Agustín F González-Rivero, Josune Orbe, José A Rodríguez, and José A Páramo.
    • Intensive Care Unit, Hospital Universitario de Canarias, Ofra, s/n. La Laguna, 38320 Santa Cruz de Tenerife, Spain. Electronic address: lorentemartin@msn.com.
    • J Crit Care. 2019 Jun 1; 51: 117-121.

    PurposePreviously, higher circulating levels of matrix metalloproteinase (MMP)-9 and tissue inhibitor matrix metalloproteinases (TIMP)-1 were reported in the first hours after TBI in blood samples from patients with poor prognosis. Thus, the objectives of this study were to determine whether MMP-9 and TIMP-1 levels during the first week of a severe TBI could be used as biomarker predictive of mortality.MethodsWe included patients with severe TBI (defined as Glasgow Coma Scale lower than 9), and with Injury Severity Score in non-cranial aspects lower than 9. We determined serum concentrations of MMP-9 and TIMP-1 at days 1, 4 and 8 of TBI.ResultsTIMP-1 concentrations at days 1 (p < .001), 4 (p = .001), and 8 (p = .01) of TBI were higher in non-surviving (n = 34) than in surviving (n = 90) patients. ROC curve analyses showed an area under curve of TIMP-1 concentrations at days 1, 4, and 8 of TBI to predict 30-day mortality of 78% (p < .001), 76% (p < .001) and 71% (p = .02) respectively.ConclusionsThe most relevant new findings of our study were that TIMP-1 levels during the first week of a severe TBI were higher in non-surviving than in surviving patients and that could be used as biomarker predictive of mortality.Copyright © 2019 Elsevier Inc. All rights reserved.

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