"We observed a significant increase in the expression of IL-31RA, but not its cognate ligand IL-31 during house dust mite- and Schistosoma mansoni soluble egg antigen-induced allergic asthma. In support of this, IFN-γ and Th2 cytokines, IL-4 and IL-13, upregulated IL-31RA but not IL-31 in airway smooth muscle cells (ASMC). Importantly, the loss of IL-31RA attenuated AHR but had no effects on inflammation and goblet cell hyperplasia in allergic asthma or mice treated with IL-13 or IFNγ."