Published in:
Open Access
01-12-2018 | Letter to the Editor
Predictors of clinical response to extrafine and non-extrafine particle inhaled corticosteroids in smokers and ex-smokers with asthma
Authors:
Fajri Gafar, Ilse M. Boudewijn, Claire A. Cox, Judith M. Vonk, Siebrig Schokker, Anne J. Lexmond, Henderik W. Frijlink, Paul Hagedoorn, Dirkje S. Postma, Maarten van den Berge
Published in:
Respiratory Research
|
Issue 1/2018
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Abstract
We performed a post-hoc analysis of the OLiVIA-study investigating whether current and ex-smoking asthmatics with small airways dysfunction (SAD) show a better response in airway hyperresponsiveness (AHR) to small particle adenosine after treatment with extrafine compared to non-extrafine particle inhaled corticosteroids (ICS), and to investigate which clinical parameters predict a favorable response to both treatments. We show that smoking and ex-smoking asthmatics with and without SAD have a similar treatment response with either extrafine or non-extrafine particle ICS. We also found that lower blood neutrophils are associated with a smaller ICS-response in smokers and ex-smokers with asthma, independent from the level of blood eosinophils.