title: Syosaiko-to and saiboku-to (Chinese-Japanese herbal medicine) suppress the release of arachidonic acid metabolites from cultured porcine pulmonary artery endothelial cells.
abstract: The influences of Syosaiko-to and Saiboku-to, traditional Chinese-Japanese medicines, on the arachidonic acid metabolism of porcine pulmonary artery endothelial cells (PPAEC) in culture were investigated. 6-keto-PGF1 alpha, a stable end product of prostacyclin, released by PPAEC during a 48 h incubation period with 1000 micrograms/ml of Syosaiko-to or Saiboku-to was significantly decreased. Analysis of the eicosanoid profile by high performance liquid chromatography revealed that both cyclooxygenase and lipoxygenase derivatives were released in smaller than usual proportions from PPAEC during 24 h incubation periods with 500 micrograms/ml of Syosaiko-to or Saiboku-to. Clinically, Syosaiko-to is used for chronic hepatitis and Saiboku-to is prescribed for bronchial asthma. The experimental findings could explain the anti-inflammatory effect of Syosaiko-to and Saiboku-to from the perspective of their influences on arachidonic acid metabolic activity associated with PPAEC.
authors.affiliation: Second Department of Internal Medicine, School of Medicine, Fukuoka University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Watanabe
authors.forename: N
authors.initials: N
authors.lastname: Tamaru
authors.forename: H
authors.initials: H
authors.lastname: Takihara
authors.forename: M
authors.initials: M
authors.lastname: Yoshida
mesh_terms: D000818:Animals; D016718:Arachidonic Acid / Q000378:metabolism*; D002478:Cells, Cultured; D002851:Chromatography, High Pressure Liquid; D004730:Endothelium, Vascular / Q000378:metabolism*; D011464:Epoprostenol / Q000096:biosynthesis; D007564:Japan; D008516:Medicine, Chinese Traditional; D008518:Medicine, East Asian Traditional; D011651:Pulmonary Artery / Q000378:metabolism; D013552:Swine
chemical_list: D016718:Arachidonic Acid; D011464:Epoprostenol