Publications by authors named "Yung-Ping Lee"

Alcohol dehydrogenase (ADH) is the principal enzyme responsible for the metabolism of ethanol. Human ADH constitutes a complex family of isozymes and allozymes with striking variation in kinetic properties and tissue distribution. The liver and the gastrointestinal tract are the major sites for first-pass metabolism (FPM).

View Article and Find Full Text PDF

The metabolic profile of the traditional Chinese medicine, Sinisan, in miniature pig urine via intragastric administration was investigated. In total, 50 compounds, including 10 unchanged parent glycosides, which were not found from Sinisan's metabolic profile in rats' urine, were identified. Among these, 36 compounds were characterized by HPLC-SPE-NMR coupled with HPLC-HRESIMS, five of which are new and nine are endogenous metabolites of miniature pig.

View Article and Find Full Text PDF

The metabolic profile of the potent hypoglycemic agent, (2S)-pterosin A (1), in rat urine via intragastrical oral administration was investigated. In total, 19 metabolites (M1-M19) were identified. Among these, 16 metabolites were characterized by high-performance liquid chromatography solid-phase extraction-tube transfer-NMR, and seven metabolites were further isolated from the treated urine to enable further structural determination.

View Article and Find Full Text PDF