Metabolic fate of 14C-camostat mesylate in man, rat and dog after intravenous administration.
Xenobiotica
; 24(1): 79-92, 1994 Jan.
Article
en En
| MEDLINE
| ID: mdl-8165824
ABSTRACT
1. The metabolic fate of N,N-dimethylcarbamoylmethyl 4-(4-guanidino[14C]benzoyloxy)phenylacetate methanesulphonate (14C-camostat mesylate) was investigated after i.v. administration to man (12-h infusion), and to rat and dog (bolus injection). 2. Renal excretion (mainly in 24 h) accounted for at least 80% dose in all three species, and the only two important metabolites were identified as 4-(4-guanidinobenzoyloxy)phenylacetic acid (GBPA) and 4-guanidinobenzoic acid (GBA). 3. Parent drug was not detected in human plasma either during or after infusion of 14C-camostat mesylate owing to rapid hydrolysis of the side-chain ester group (t1/2 < 1 min). Steady-state levels of both GBPA and GBA in plasma were apparently attained by the end of the infusion period. Mean terminal half-life, systemic clearance and apparent volume of distribution at steady-state of GBPA in man were 1.0 h, 6.4 ml/min per kg and 0.38 l/kg, respectively, and the corresponding values for GBA were 2.4 h, 4.7 ml/min per kg and 1.01/kg respectively. 4. Radioactivity was rapidly distributed to most tissues after bolus i.v. doses of 14C-camostat mesylate to rats and dogs, with highest levels being associated with the liver and kidney, the two main organs of drug elimination. Concentrations in the pancreas, a possible site for drug action, were generally lower than those in plasma.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Inhibidores de Proteasas
/
Inhibidores de Tripsina
/
Gabexato
/
Guanidinas
Límite:
Adult
/
Animals
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Humans
/
Male
Idioma:
En
Revista:
Xenobiotica
Año:
1994
Tipo del documento:
Article
País de afiliación:
Reino Unido