title: Kinetics of aluminum in rats I: Dose-dependent elimination from blood after intravenous administration.
abstract: Aluminum (Al) kinetics after intravenous bolus administration were studied in the rat. The animals received either 0.1 or 1.0 mg/kg (n = 6 at each dose) of elemental Al as the sulfate salt. The Al content of serial blood samples was determined by flameless atomic absorption spectrophotometry. Blood and plasma Al-time profiles after both doses were monoexponential in most cases. Increasing the administered dose increased the elimination half-life (mean +/- SD) from 1.20 +/- 0.25 to 2.41 +/- 0.26 h. A corresponding decrease in systemic clearance was observed (49.6 +/- 11.0 to 18.4 +/- 4.6 mL/kg.h). Both changes were significant (p less than 0.05). Significant differences were also observed in the volume of distribution, the values of which were 78.3 +/- 17.2 and 58.9 +/- 8.5 mL/kg at the low and high doses, respectively. At both doses, blood:plasma ratios ranged from 0.8 to 1.0, indicating considerable uptake/binding of the element by blood cells.
authors.affiliation: University of Missouri-Kansas City, School of Pharmacy 64108-2792.
authors.forename: S M
authors.initials: SM
authors.lastname: Pai
authors.forename: S
authors.initials: S
authors.lastname: Melethil
mesh_terms: D000535:Aluminum / Q000008:administration & dosage / Q000097:blood / Q000493:pharmacokinetics*; D000818:Animals; D006207:Half-Life; D007275:Injections, Intravenous; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D000535:Aluminum