title: Pharmacokinetics of cocaine in pregnant and nonpregnant rhesus monkeys.
abstract: To determine pharmacokinetic parameters for cocaine in rhesus monkey plasma, samples were taken over several hours after i.m. administration of cocaine plus a tritiated cocaine tracer. Cocaine and its metabolites, benzoylecgonine and norcocaine, were isolated via HPLC and quantitated using liquid scintillation spectrometry. Pregnant subjects were dosed with cocaine at 0.3 (n = 3) or 1.0 (n = 3) mg/kg, whereas nonpregnant female subjects were dosed with 1.0 mg/kg (n = 3). For the pregnant subjects, pharmacokinetic studies were conducted on about gestational day 125 and areas under the concentration versus time curve (AUCs, ng/mL x h) were 64 +/- 26 (+/- SEM) and 143 +/- 12; half-lives (t1/2s, h) were 1.9 +/- 0.6 and 1.1 +/- 0.1 after 0.3 and 1.0 mg/kg i.m., respectively. For nonpregnant subjects dosed acutely with 1.0 mg/kg, the AUC was 262 +/- 63 and the t1/2 was 1.4 +/- 0.3. There appear to be few differences in the pharmacokinetic parameters of cocaine and benzoylecgonine between pregnant and nonpregnant monkeys in this study.
authors.affiliation: Division of Neurotoxicology, National Center for Toxicological Research, Jefferson, Arkansas 72079-9502.
authors.forename: H M
authors.initials: HM
authors.lastname: Duhart
authors.forename: C M
authors.initials: CM
authors.lastname: Fogle
authors.forename: M P
authors.initials: MP
authors.lastname: Gillam
authors.forename: J R
authors.initials: JR
authors.lastname: Bailey
authors.forename: W
authors.initials: W
authors.lastname: Slikker
authors.forename: M G
authors.initials: MG
authors.lastname: Paule
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid; D003042:Cocaine / Q000097:blood / Q000493:pharmacokinetics* / Q000652:urine; D005260:Female; D008253:Macaca mulatta; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000378:metabolism*
chemical_list: D003042:Cocaine