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IN VITRO CHARACTERIZATION OF LAMOTRIGINE N2-GLUCURONIDATION AND THE LAMOTRIGINE-VALPROIC ACID INTERACTION
Studies were performed to investigate the UDP-glucuronosyltransferase enzyme(s) responsible for the human liver microsomal N2-glucuronidation of the anticonvulsant drug lamotrigine (LTG) and theExpand
Disposition of valproic acid in the rat: dose-dependent metabolism, distribution, enterohepatic recirculation and choleretic effect.
A specific gas chromatographic assay has been developed for measurement of valproic acid (VPA) and its major conjugated metabolites. In rats given single intravenous doses, the decline in bloodExpand
Acyl glucuronide reactivity in perspective: biological consequences.
The metabolic conjugation of exogenous and endogenous carboxylic acid substrates with endogenous glucuronic acid, mediated by the uridine diphosphoglucuronosyl transferase (UGT) superfamily ofExpand
pH-dependent rearrangement of the biosynthetic ester glucuronide of valproic acid to beta-glucuronidase-resistant forms.
A major metabolite of the antiepileptic drug valproic acid (VPA) in animals and man is the glucuronic acid conjugate, which is cleaved by incubation with beta-glucuronidase (specific forExpand
Studies on the reactivity of acyl glucuronides--VI. Modulation of reversible and covalent interaction of diflunisal acyl glucuronide and its isomers with human plasma protein in vitro.
Acyl glucuronide conjugates are chemically reactive metabolites which can undergo hydrolysis, rearrangement (isomerization via acyl migration) and covalent binding reactions with protein. The presentExpand
Characterization and formation of the glutathione conjugate of clofibric acid.
The incubation of 1-O-clofibryl glucuronide (1-O-CAG), a metabolite of clofibrate, with glutathione (GSH) resulted in the appearance of a new peak when analyzed by HPLC. The use of HPLC coupled toExpand
Echinacea alkamide disposition and pharmacokinetics in humans after tablet ingestion.
Echinacea is a widely used herbal remedy for the treatment of colds and other infections. However, almost nothing is known about the disposition and pharmacokinetics of any of its components,Expand
Urinary Excretion of Valproate and Some Metabolites in Chronically Treated Patients
Urinary excretion of the antiepileptic agent valproic acid (VPA) and major metabolites from its glucuronidation, β-oxidation, and ω- and ω1-hydroxylation pathways were studied under steady stateExpand
Abolition of Valproate-Derived Choleresis in the Mrp2 Transporter-Deficient Rat
Valproic acid (VPA) is a major therapeutic agent in the treatment of epilepsy and other neurological disorders. It is metabolized in humans and rats primarily along two pathways: directExpand
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