@article {Rahman299, author = {A Rahman and H L Komiskey and W L Hayton and W P Weisenburger}, title = {Aging: changes in distribution of diazepam and metabolites in the rat.}, volume = {14}, number = {3}, pages = {299--302}, year = {1986}, publisher = {American Society for Pharmacology and Experimental Therapeutics}, abstract = {The brain levels of diazepam and its metabolites after a single iv injection of diazepam were measured over a 2-hr time period in young (3-4-month-old), mature (12-15-month-old), and senescent (29-31-month-old) male Fischer 344 rats. The areas under the brain level time curves were used as an index of exposure. Senescent rats were exposed to significantly more diazepam, N-desmethyldiazepam, and oxydiazepam between 0 and 120 min after an injection of 180 micrograms/kg of diazepam than the young or mature animals. The unbound plasma level failed to adequately account for the age-related increase in brain exposure to diazepam. Mechanisms other than the unbound diazepam in plasma are probably involved in eliciting the age-associated increase in brain levels of diazepam and its metabolites.}, issn = {0090-9556}, URL = {https://dmd.aspetjournals.org/content/14/3/299}, eprint = {https://dmd.aspetjournals.org/content/14/3/299.full.pdf}, journal = {Drug Metabolism and Disposition} }