['The common cold is a major cause of asthma exacerbation and chronic obstructive lung disease. Rhinovirus is reported to be responsible for more than 50% of cases of the common cold. In a previous study, we reported that rhinovirus infection of cultured airway cells induced MUC5AC mucin overproduction and hypersecretion by activating the p44/42 mitogen-activated protein kinase (p44/42 MAPK) pathway. The aim of this study was to examine the effect of erythromycin on RV14-induced airway mucin overproduction and hypersecretion.', 'RV14-infected human tracheal epithelial cells were treated with erythromycin.', 'Erythromycin blocked RV14-induced MUC5AC protein overproduction and hypersecretion, and also blocked RV14-induced p44/42 MAPK activation in the cells.'] Does erythromycin attenuate MUC5AC synthesis and secretion in cultured human tracheal cells infected with RV14?