Background: Because persistent inflammation plays a dominant role in cystic fibrosis (CF), we assessed systemic and local upper airway responses during and after pulmonary exacerbation. Methods: We followed a cohort of Pseudomonas aeruginosa-infected adult CF patients (n = 16) over time in pulmonary exacerbation and in stable disease. Interleukin (IL)-1β, IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, IL-17A, IL-22, interferon-γ and TNFα levels were measured in sputum, nasal lavages and plasma. Results: In CF patients IL-6 and IL-10 levels in nasal lavages were significantly increased in exacerbation compared with stable disease. Systemic IL-6 significantly correlated with CRP levels and FEV1 (%predicted), independently of disease status. Systemic IL-10 also correlated significantly with CRP and FEV1 (%predicted), but only in exacerbation. Other cytokines tested did not discriminate between exacerbation and stable disease. Conclusions: Determination of IL-6 and IL-10 in nasal lavages may provide a minimally invasive tool in the assessment of an exacerbation in CF.

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Journal of Cystic Fibrosis
Department of Immunology

Paats, M.S, Bergen, I.M, Bakker, M, Hoek, R.A.S, Nietzman-Lammering, K.J, Hoogsteden, H.C, … van der Eerden, M. (2013). Cytokines in nasal lavages and plasma and their correlation with clinical parameters in cystic fibrosis. Journal of Cystic Fibrosis, 12(6), 623–629. doi:10.1016/j.jcf.2013.05.002