A. Nasiri et al., EFFECTS OF THE SESQUITERPENE CAPSIDIOL ON ISOLATED GUINEA-PIG ILEUM AND TRACHEA, AND ON PROSTAGLANDIN SYNTHESIS INVITRO, Planta medica, 59(3), 1993, pp. 203-206
The sesquiterpene capsidiol (1), isolated from elicited, cultured cell
s of Nicotiana silvestris (1), inhibits contraction induced by the ago
nists, histamine, acetylcholine, bradykinin, and barium chloride in th
e isolated guinea-pig ileum. In addition, capsidiol inhibits contracti
on induced by histamine and carbachol in the isolated guinea-pig trach
ea in a nonspecific and non-competitive but concentration-dependent ma
nner. Capsidiol also inhibits prostaglandin synthesis (cyclooxygenase)
in vitro in a concentration dependent manner.