• Critical care medicine · Mar 2005

    Comparative Study

    Persistent elevation of high mobility group box-1 protein (HMGB1) in patients with severe sepsis and septic shock.

    • Jonas Sundén-Cullberg, Anna Norrby-Teglund, Ari Rouhiainen, Heikki Rauvala, Gunilla Herman, Kevin J Tracey, Martin L Lee, Jan Andersson, Leif Tokics, and Carl Johan Treutiger.
    • Department of Medicine, Center for Infectious Medicine, Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden.
    • Crit. Care Med. 2005 Mar 1; 33 (3): 564-73.

    ObjectiveTo study the systemic release and kinetics of high mobility group box-1 protein (HMGB1) in relation to clinical features in a population of patients with severe sepsis or septic shock and to compare these with the kinetics of the cytokines interleukin-6, interleukin-8, interleukin-10, and tumor necrosis factor-alpha.DesignProspective study of two cohorts of patients.SettingIntensive care unit and infectious disease clinic at Karolinska University Hospital Huddinge.PatientsTwenty-six patients with severe sepsis, 33 patients with septic shock, and a reference group of five patients with sepsis.InterventionsNone.Measurements And Main ResultsSixty-four patients were included, ten of whom died within 28 days. Cytokine levels were measured at five time points during the first week after admission and were correlated to Acute Physiology and Chronic Health Evaluation II and Sepsis-related Organ Failure Assessment scores. Two HMGB1 assays were used. Both demonstrated delayed kinetics for HMGB1 with high levels on inclusion that remained high throughout the study period. Serum concentration at 144 hrs, the last sampling point, was 300 times higher, 34,000 +/- 76,000 pg/mL (mean +/- sd), than any of the other cytokines. This study, however, found no predictable correlation between serum levels of HMGB1 and severity of infection. We did quite unexpectedly find significantly lower levels of HMGB1 in nonsurvivors compared with survivors as measured by our main assay, but the other showed no difference between the two groups. Levels of interleukin-6, interleukin-8, interleukin-10, and tumor necrosis factor-alpha correlated significantly with severity of disease, and all were significantly higher in patients with septic shock compared with those with severe sepsis. Neither of these comparisons showed significant correlations for HMGB1.ConclusionsThis is the first prospective study assessing the release over time of HMGB1 in a population of patients with sepsis, severe sepsis, or septic shock. Levels remained high in the majority of patients up to 1 wk after admittance, indicating that the cytokine indeed is a downstream and late mediator of inflammation. Further studies are required to fully define the relationship of HMGB1 to severity of disease.

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