3)Drug-induced mucosal injury, especially by non-steroidal anti-inflammatory drugs Nsaids) aororoooooooncoxxmomonomx Phospholipid (from cell membrane) Corticosteroids OO←[Agh Arachidonic acid NSAIDS“ Prostacyclin(PGl2) PGF2 PGH 5-Lpoxygenase Thromboxane A2 Dipyridamole 5-HPETE see Chapter 20)3) Drug-induced mucosal injury, especially by non-steroidal anti-inflammatory drugs (NSAIDs)