PMID: 1820868Jan 1, 1991

Pharmacokinetics of the anti-leishmanian agent WR 6026 in dogs

European Journal of Drug Metabolism and Pharmacokinetics
T TaylorH Chung


The pharmacokinetics of the anti-leishmanial agent WR 6026 (8-(6-diethylaminohexylamino)-6-methoxy-4-methylquinoline dihydrochloride) has been studied after single intravenous infusion and oral doses of 5 mg (base)/kg to 6 Beagle dogs. After single intravenous infusions of 15 min, plasma concentrations of unchanged drug declined bi-exponentially from a mean maximum of 1203 ng/ml +/- 277 SD at the end of infusion to the limit of quantitation during 16 hours. After single oral doses, the mean Cmax of 23 ng/ml +/- 14 SD occurred at a mean Tmax of 2.2 hours +/- 1.3 SD. During 72 hours after the intravenous and oral doses, 0.6% and less than 0.2% of the dose respectively was excreted unchanged in the urine. The mean terminal-life of WR 6026 after the infusion doses was +/- 0.3 SD, but after the oral doses, plasma concentrations of drug were too low to allow estimation of the terminal half-life. The systemic clearance of WR 6026 (43.5 ml/min/kg) greatly exceeded the nomina, plasma flow (ca. 22 ml/min/kg) and indicated considerable extra-hepatic and extra-renal elimination of WR 6026 in dogs. The mean systemic availability of WR 6026 after the oral doses was ca.4%. The mean volumes of distribution of WR 6026 in dogs were 3.3 litres/kg...Continue Reading

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