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    Cytokine markers as predictors of type of respiratory infection in patients during the influenza season

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    Authors
    Haran, John Patrick
    Buglione-Corbett, Rachel
    Lu, Shan
    UMass Chan Affiliations
    Department of Emergency Medicine
    Laboratory of Nucleic Acid Vaccines
    Department of Medicine, Division of Infectious Diseases and Immunology
    Document Type
    Journal Article
    Publication Date
    2013-05-01
    Keywords
    Cytokines
    Respiratory Tract Infections
    Influenza, Human
    Bacterial Infections and Mycoses
    Emergency Medicine
    Immunology and Infectious Disease
    Infectious Disease
    Respiratory Tract Diseases
    Virus Diseases
    
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    http://dx.doi.org/10.1016/j.ajem.2013.01.030
    Abstract
    OBJECTIVE: The objective of this study is to characterize the cytokine response among patients presenting with an influenza-like illness who are infected with the influenza virus, a bacterial pneumonia, or another viral infection. We hypothesize that there are differences in proinflammatory and anti-inflammatory cytokines in relation to cytokines associated with the humoral response during viral and bacterial respiratory infections. METHODS: We enrolled adults who presented to an urban academic emergency department during the 2008 to 2011 influenza seasons with symptoms of fever and a cough. Subjects had nasal aspirates tested by viral culture, and peripheral blood drawn to quantify cytokine concentrations. Cytokine concentrations were compared between groups using the Wilcoxon rank sum test, and receiver operating characteristic curves were calculated. RESULTS: A total of 80 patients were enrolled: 40 with influenza infection, 14 patients with a bacterial pneumonia as determined by infiltrate on chest x-ray, and 26 patients negative for influenza infection and infiltrate. There were differences between the bacterial pneumonia group, and all other viral infections grouped together with regard to interleukin (IL) 4 (2.66 vs 16.77 pg/mL, P < .001), IL-5 (20.57 vs 57.57 pg/mL, P = .006), IL-6 (403.06 vs 52.69 pg/mL, P < .001), granulocyte macrophage colony-stimulating factor (18.26 vs 66.80 pg/mL, P < .001), and interferon gamma (0.0 vs 830.36 pg/mL, P < .001). Interleukin 10 concentrations were elevated in patients with influenza (88.69 pg/mL) compared with all other groups combined (39.19 pg/mL; P = .003). CONCLUSION: Cytokines IL-4, IL-5, IL-6, granulocyte macrophage colony-stimulating factor, and interferon gamma may serve as distinct markers of bacterial infection in patients with an influenza-like illness, whereas IL-10 is uniquely elevated in influenza patients.
    Source
    Am J Emerg Med. 2013 May;31(5):816-21. doi: 10.1016/j.ajem.2013.01.030. Link to article on publisher's site
    DOI
    10.1016/j.ajem.2013.01.030
    Permanent Link to this Item
    http://hdl.handle.net/20.500.14038/30140
    PubMed ID
    23481156
    Notes

    Co-author Rachel Buglione-Corbett is a student in the MD/PhD program in the Graduate School of Biomedical Sciences (GSBS) at UMass Medical School.

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    Link to Article in PubMed
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.ajem.2013.01.030
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    Emergency Medicine Publications

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