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Cytokine responses, microbial aetiology and short-term outcome in community-acquired pneumonia

Permanent link
https://hdl.handle.net/10037/13211
DOI
https://doi.org/10.1111/eci.12865
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Date
2017-11-24
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Author
Siljan, William Ward; Holter, Jan Cato; Nymo, Ståle Haugset; Husebye, Einar; Ueland, Thor; Aukrust, Pål; Mollnes, Tom Eirik; Heggelund, Lars
Abstract
Background:
The inflammatory response to community-acquired pneumonia (CAP) is orchestrated through activation of cytokine networks and the complement system. We examined the association of multiple cytokines and the terminal complement complex (TCC) with microbial aetiology, disease severity and shortterm outcome.
Materials and methods:
Plasma levels of 27 cytokines and TCC were analysed in blood samples obtained at hospital admission, clinical stabilization and 6-week follow-up from 247 hospitalized adults with CAP. Fourteen mediators were included in final analyses. Adverse short-term outcome was defined as intensive care unit (ICU) admission and 30-day mortality.
Results:
Cytokine and TCC levels were dynamic in the clinical course of CAP, with highest levels seen at admission for most mediators. Admission levels of cytokines and TCC did not differ between groups of microbial aetiology. High admission levels of IL-6 (odds ratio [OR] 1.47, 95% confidence interval [CI] 1.18-1.84, P = .001), IL-8 (OR 1.79, 95% CI 1.26-2.55, P = .001) and MIP-1b (OR 2.28, 95% CI 1.36-3.81, P = .002) were associated with a CURB-65 severity score of ≥3, while IL-6 (OR 1.37, 95% CI 1.07-1.74, P = .011) and MIP-1b (OR 1.86, 95% CI 1.03-3.36, P = .040) were associated with a high risk of an adverse short-term outcome.
Conclusions:
In this CAP cohort, admission levels of IL-6, IL-8 and MIP-1b were associated with disease severity and/or adverse short-term outcome. Still, for most mediators, only nonsignificant variations in inflammatory responses were observed for groups of microbial aetiology, disease severity and short-term outcome.
Description
Source at: http://doi.org/10.1111/eci.12865
Publisher
Wiley
Citation
Siljan, W. W., Holter, J. C., Nymo, S. H., Husebye, E., Ueland, T., Aukrust, P., Mollnes, T. E. & Heggelund L. (2017). Cytokine responses, microbial aetiology and short-term outcome in community-acquired pneumonia. European Journal of Clinical Investigation, 48(1), 1-10. http://doi.org/10.1111/eci.12865
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