Figure 6. Simplified schema for the cardiovascular consequences of COX-2 versus mPGES-1 inhibition.
Inhibition of COX-2 predisposes mice to thrombosis, atherogenesis and hypertension, attributable to suppression of PGI2 and PGE2 biosynthesis. Deletion of mPges-1 results in rediversion of accumulated PGH2 substrate to prostacyclin synthase, augmenting PGI2 while suppressing PGE2 biosynthesis. This shift in substrate to PGI2 restrains thrombosis, hypertension and atherogenesis. X- Inhibition or deletion of enzyme.