Texas EicosanoidsPrecursor Arachidonic acid ProstanoidsProstaglandins (PG)Precursor H2 ActiveD/J D2 E/F E2 (Dinoprostone) E1 (Alprostadil) F2α (Dinoprost): I I2 (Prostacyclin/Epoprostenol): Thromboxanes (TX) A2 B2 Leukotrienes (LT)Precursor Arachidonic acid 5-hydroperoxide Initial A4 B4 SRS-A C4 D4 E4 Eoxins (EX)Precursor Arachidonic acid 15-hydroperoxide Eoxins A4 C4 D4 E4 Nonclassic Lipoxins (LX) (A4, B4) Virodhamine By function bronchoconstriction PGD2 TXA2 LTC4 LTD4 LTE4 vasoconstriction PGF2α TXA2 TXB2 vasodilation PGE2 PGI2 LTC4 LTD4 LTE4 platelets: induce TXA2 inhibit PGD2 PGI2 leukocytes: induce TXA2 LTB4 inhibit PGD2 PGE2 fever stimulation: PGE2 labor stimulation: PGE2 (Dinoprostone) PGF2α (Dinoprost)