PTGS2 and allergic asthma: Kandhare et al. found that morin possesses antiasthmatic qualities mediated by the reduction of oxidative airway inflammation and stress through modulating the BLT2/NF-κB and SUMF2/IL-13 signaling pathways and downregulating the expression of LTB-4, IL-6, IL-4, COX-2, and IgE [108] in OVA-induced allergic asthma [270].