Here, we found that blockade of COX-2/sEH by PTUPB reversed the up- regulation of components of the NLRP3 inflammasome, including Nlrp3, pro-caspase-1, Asc, and pro-Il-1β mRNAs in the lungs of ALI mice (Figure 5A-D). Here, CASP1 is linked to acute respiratory distress syndrome.