TY - JOUR T1 - Glucocorticoids induce the production of the chemoattractant CCL20 in airway epithelium JF - European Respiratory Journal JO - Eur Respir J SP - 859 LP - 860 DO - 10.1183/09031936.00179314 VL - 45 IS - 3 AU - Carl Persson AU - Lena Uller Y1 - 2015/03/01 UR - http://erj.ersjournals.com/content/45/3/859.abstract N2 - We read with interest the report by Zijlstra et al. [1] in which the effects of glucocorticoids possibly contributed to airway neutrophilia in asthma. This study nicely adds to the research demonstrating that corticosteroids not only inhibit the production of several inflammatory chemokines and cytokines, but also corticosteroids increase levels of certain regulatory proteins; these neutrophil-active proteins are potentially involved in inflammation or, indeed, in host defence. Hence, the data reported by Zijlstra et al. [1] may deserve attention beyond the focus given by the authors. A major challenge is to distinguish between good and bad aspects of inflammation http://ow.ly/DAglc ER -