Title |
Elimination kinetics of desmethyldiazepam in two young and two elderlysubjects
|
---|---|
Published in |
European Journal of Drug Metabolism and Pharmacokinetics, January 1982
|
DOI | 10.1007/bf03189546 |
Pubmed ID | |
Authors |
G. M. Pacifici, L. Cuoci, G. F. Placidi, P. Fornaro, R. Gomeni |
Abstract |
Pinazepam (P) (10 mg) was orally administered to two young (22-23 years) and two elderly (74-80 years) healthy volunteers. Also, desmethyldiazepam (DD) (10 mg) was orally administered to the same young volunteers on a separate occasion. P was almost completely converted into DD 24 h after administration. Plasma levels of DD were measured in all subjects. In all cases, the DD concentration-time curve showed a biphasic decay (a first slow decay was followed by a fast one) which closely fitted by a Michaelis-Menten equation. Vmax and km constant were computed for all subjects. The kinetic analysis relative to the young subjects showed that T 1/2 of both the slow and fast decay as well as the area under the curve (AUC) were reduced when P was administered instead of DD. Comparison of DD kinetics between young and elderly subjects showed an increase of half-life in the elderly, while AUC was found unchanged. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 3 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Professor > Associate Professor | 1 | 33% |
Student > Bachelor | 1 | 33% |
Unknown | 1 | 33% |
Readers by discipline | Count | As % |
---|---|---|
Pharmacology, Toxicology and Pharmaceutical Science | 2 | 67% |
Unknown | 1 | 33% |