Dietary New Zealand propolis supplementation reduced proinflammatory cytokines in an acute mouse model of air pollution exposure, without impacting on immune cell infiltration or lung function

•Propolis reduced urban dust-induced lung TNFα, IL-4, and IL-6 production in mice.•Propolis did not alter urban dust-induced immune cell infiltration into mice lungs.•Propolis did not alter urban dust-induced airways constriction in mice.•This suggests that Propolis only partially reduces inflammatory responses in an urban dust mouse model.