Cheng-Huei Hsiong

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STUDY OBJECTIVE To evaluate whether the occurrence or severity of gingival hyperplasia is associated with liver function test results or phenytoin metabolism. DESIGN Prospective analysis. SETTING University-affiliated medical center in Taipei, Taiwan. PATIENTS Sixty-six patients (mean age 37.9 yrs) with epilepsy who were receiving phenytoin for more(More)
For the determination of nalbuphine and its long acting prodrug, sebacoyl dinalbuphine ester (SDN), in biological samples, a reversed-phase high-performance liquid chromatographic method using dual detectors was established. Ultraviolet and fluorescence detectors were connected in series for determining SDN and nalbuphine, respectively. The two analytes and(More)
BACKGROUND Earlier studies have demonstrated an association between N-acetyltransferase 2 (NAT2) catalytic activity and the genotype of a recently published tag single nucleotide polymorphism (SNP), rs1495741. There have been no reports on the relationship between the rs1495741 genotype and antituberculosis drug-induced hepatotoxicity (ATDIH) to date. (More)
A safe and efficient semi-synthetic narcotic nalbuphine (NAL) which was broadly applied in analgesic therapy has long been considered to eliminate from human body via phase II conjugation. However, up to the present, neither the complete metabolic pathways nor the identified metabolites of NAL have been clarified in documented reports. In this study, four(More)
A simple, simultaneous, sensitive and selective liquid chromatography-tandem mass spectrometry (LC-MS-MS) method for the determination of triazolam and its metabolites, α-hydroxytriazolam (α-OHTRZ) and 4-hydroxytriazolam (4-OHTRZ), in human urine was developed and validated. Triazolam-d4 was used as the internal standard (IS). This analysis was carried out(More)
PURPOSE Rosiglitazone, an insulin-sensitizing thiazolidinedione, acts as a ligand for the y-subtype of the peroxisome proliferator-activated receptor in the regulation of glucose homeostasis and lipid metabolism. The aims of this study were to determine the pharmacokinetics of oral rosiglitazone in Taiwanese and to post hoc compare the ethnic differences(More)
The purpose of this study was to investigate the galactose single point (GSP) method, a residual liver function test recently recommended by the US Food and Drug Administration, which can be a useful tool for rat liver function measurement. Rats were treated either with carbon tetrachloride (CCl(4)) alone (1 mL/kg, intraperitoneally [i.p.]) for one day or(More)
Dextromethorphan is used widely in vivo to phenotype the polymorphically expressed cytochrome P450 (CYP) 2D6. Also dextromethorphan is N-demethylated in vivo to 3-methoxymorphinan by human CYP3A4/5. The metabolic ratio (MR) of dextromethorphan/3-methoxymorphinan in plasma, saliva and urinary were examined as a possible in vivo probe of CYP3A activity. In(More)
BACKGROUND Liver biopsy reliably diagnoses nonalcoholic fatty liver disease, but its invasiveness and inter- and intra-observer errors limit its usefulness in monitoring. AIMS Use a galactose single point method or combined biochemical parameters to improve assessments of nonalcoholic fatty liver disease in a rat model. METHODS Three nonalcoholic fatty(More)
Blood galactose clearance after an intravenous galactose load has been widely used as a quantitative liver function test. We have developed a novel quantitative rat liver function test, the galactose single point (GSP) method, to assess residual liver function with various injuries by measuring single time point galactose concentration in blood after an(More)