Piriprost is a structural analog of prostaglandin I2 (PGI2) with low IP receptor-mediated activity. Piriprost inhibits 5-lipoxygenase with an IC50 around 100 µM, as measured by the release of 5-HETE from cultured myometrial cells.1 Piriprost inhibits the release of histamine and leukotrienes from isolated porcine lung cells with an IC50 of 0.11 µM, implicating its role in inflammation and allergic responses.2
1
Cejic, S.S., and Kennedy, T.G. Examination of the effects of piriprost (U-60, 257B) on alkaline phosphatase activity of rat endometrial stromal cells in vitro. Prostaglandins42179-189(1991).
2
McCormack, D.G., and Peterson, N.A.M. The contrasting influence of two lipoxygenase inhibitors on hypoxic pulmonary vasoconstriction in anesthetized pigs. Am Rev Respir Dis139100-105(1989).
Synonyms
U-60257B
Formal Name
1,4(R),5(R),6-tetrahydro-5-hydroxy-4-[(1E,3S)-3-hydroxy-1-octenyl]-1-phenyl-cyclopenta[b]pyrrole-2-pentanoic acid, monopotassium salt
Cejic, S.S., and Kennedy, T.G. Examination of the effects of piriprost (U-60, 257B) on alkaline phosphatase activity of rat endometrial stromal cells in vitro. Prostaglandins42179-189(1991).
McCormack, D.G., and Peterson, N.A.M. The contrasting influence of two lipoxygenase inhibitors on hypoxic pulmonary vasoconstriction in anesthetized pigs. Am Rev Respir Dis139100-105(1989).
Piriprost (potassium salt) is available in the following screening
libraries: