Biopharmaceutical studies on crude drug preparations. I: Permeation of paeonol in a decoction and dry extract of Paeonia suffruticosa root cortex using an absorption simulator.
The permeation behavior of paeonol, one active constituent of a crude Chinese drug called Moutan Cortex, through an artificial gastric lipid barrier was examined in vitro using an absorption simulator in order to clarify how the administered form influenced the bioavailability of paeonol from a crude preparation. Paeonol concentrations were determined by a high-performance liquid chromatographic method developed during this study. Paeonol showed greater permeation from artificial gastric juice into artificial plasma when it was applied as a decoction or freeze-dried extract of Moutan Cortex than when applied as purified paeonol alone.
Research Institute of Oriental Medicine, Kinki University, Osaka, Japan.
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T
Tani
K
K
Inoue
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S
Arichi
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Ohno
D000042:Absorption; D000098:Acetophenones / Q000032:analysis*; D001702:Biopharmaceutics; D002851:Chromatography, High Pressure Liquid; D004058:Diffusion; D004365:Drugs, Chinese Herbal / Q000378:metabolism*; D005079:Excipients; D005612:Freeze Drying; D008567:Membranes, Artificial; D010539:Permeability
D000098:Acetophenones; D004365:Drugs, Chinese Herbal; D005079:Excipients; D008567:Membranes, Artificial; C013638:paeonol