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Antimicrobial Agents and Chemotherapy, April 2000, p. 916-919, Vol. 44, No. 4
Department of Drug Metabolism and
Pharmacokinetics1 and Department of
Chemotherapy,2 Schering-Plough Research
Institute, Kenilworth, New Jersey 07033
Received 7 July 1999/Returned for modification 30 November
1999/Accepted 27 December 1999
The pharmacokinetics of SCH 27899, a novel oligosaccharide compound
of the everninomicin class with excellent activity against gram-positive strains, was studied with mice, rats, rabbits, and cynomolgus monkeys following intravenous administration as SCH 27899-N-methylglucamine-hydroxypropyl
0066-4804/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
Pharmacokinetics of an Everninomicin (SCH 27899) in
Mice, Rats, Rabbits, and Cynomolgus Monkeys following Intravenous
Administration
-cyclodextrin.
Concentrations of SCH 27899 in mouse serum, rat plasma, and rabbit
serum were determined by a high-pressure liquid chromatography method
on a poly(styrene-divinyl benzene) column, and those in monkey plasma were determined by a paired-ion chromatographic method. Plasma and
serum concentrations of SCH 27899 exhibited a biexponential decline in
all species following intravenous administration. The half-lives at
phase were 3.0 to 7.9 h in mice, rats, and rabbits and 24 h
in cynomolgus monkeys. There was a linear relationship between the area
under the curve extrapolated to infinity [AUC(I)] in mice and dose.
Rabbits also exhibited dose proportionality in AUC(I). However, in
rats, increasing the dose from 3 to 60 mg/kg of body weight resulted in
a 49-fold increase in AUC(I). When the species was changed from mouse
to rat, rabbit, or cynomolgus monkey, AUC(I) increased, whereas
clearance (CL) decreased. It was concluded that the pharmacokinetics of
SCH 27899 in animals varied with species; CL was the highest in mice
and rats, followed by rabbits and cynomolgus monkeys.
*
Corresponding author. Mailing address: Department of
Drug Metabolism and Pharmacokinetics, Schering-Plough Research
Institute, 2015 Galloping Hill Rd., Kenilworth, NJ 07033. Phone: (908)
740-3450. Fax: (908) 740-3966. E-mail:
chin_chung{at}spcorp.com.
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