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Weckmann, M.* ; Thiele, D.* ; Liboschik, L.* ; Bahmer, T.* ; Pech, M.* ; Dittrich, A.M.* ; Fuchs, O.* ; Happle, C.* ; Schaub, B.* ; Ricklefs, I.* ; Rabe, K.F.* ; ALLIANCE Study Group (von Mutius, E.) ; Hansen, G.* ; König, I.R.* ; Kopp, M.V.*

Cytokine levels in children and adults with wheezing and asthma show specific patterns of variability over time.

Clin. Exp. Immunol., DOI: 10.1111/cei.13550 (2020)
Publ. Version/Full Text Research data DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
Levels of cytokines are used for in-depth characterization of patients with asthma; however, the variability over time might be a critical confounder. To analyze the course of serum cytokines in children, adolescents and adults with asthma and in healthy controls and to propose statistical methods to control for seasonal effects. Of 532 screened subjects, 514 (91 center dot 5%) were included in the All Age Asthma Cohort (ALLIANCE). The cohort included 279 children with either recurrent wheezing bronchitis (more than two episodes) or doctor-diagnosed asthma, 75 healthy controls, 150 adult asthmatics and 31 adult healthy controls. Blood samples were collected and 25 mu l serum was used for analysis with the Bio-Plex Pr human cytokine 27-Plex assay. Mean age, body mass index and gender in the three groups of wheezers, asthmatic children and adult asthmatics were comparable to healthy controls. Wheezers (34 center dot 5%), asthmatic children (78 center dot 7%) and adult asthmatics (62 center dot 8%) were significantly more often sensitized compared to controls (4 center dot 5, 22 and 22 center dot 6%, respectively). Considering the entire cohort, interleukin (IL)-1ra, IL-4, IL-9, IL-17, macrophage inflammatory protein (MIP)-1-alpha and tumor necrosis factor (TNF)-alpha showed seasonal variability, whereas IL-1 beta, IL-7, IL-8, IL-13, eotaxin, granulocyte colony-stimulating factor (G-CSF), interferon gamma-induced protein (IP)-10, MIP-1 beta and platelet-derived growth factor (PDGF)-BB did not. Significant differences between wheezers/asthmatics and healthy controls were observed for IL-17 and PDGF-BB, which remained stable after adjustment for the seasonality of IL-17. Seasonality has a significant impact on serum cytokine levels in patients with asthma. Because endotyping has achieved clinical importance to guide individualized patient-tailored therapy, it is important to account for seasonal effects.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Adults ; Asthma ; Cytokines ; Season ; Variability ; Wheeze ; Children; Vitamin-d Supplementation; Gene-expression; Dendritic Cells; Age; Responses; Stimulation; Infection; Distinct; Gender; Il-17
ISSN (print) / ISBN 0009-9104
e-ISSN 1365-2249
Journal Clinical & Experimental Immunology
Publisher Wiley
Publishing Place 111 River St, Hoboken 07030-5774, Nj Usa
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Asthma and Allergy Prevention (IAP)
Grants Bundesministerium für Bildung und Forschung