Abstract
The pharmacokinetics of HI-6 ((4-carboxamidopyridinium (1) methyl)-(2'-hydroxyiminomethyl-pyridinium (1') methyl) ether dichloride) have been studied in rabbits receiving an intramuscular (50 micrograms kg-1) or intravenous (12.5 micrograms kg-1) dose. The plasma concentration-time profile for the intramuscular dose (n = 8) fits a one-compartment open model with first-order absorption and elimination. The absorption half-life was 2 min and maximum concentration (51 micrograms mL-1) was reached in 9 min. The pharmacokinetics for the intravenous dose (n = 8) was described by a two-compartment open model with first-order distribution and elimination. The apparent volume of distribution was 0.1 L kg-1. Half-lives of distribution and elimination were 5 and 38 min, respectively. The results indicate HI-6 is rapidly absorbed, distributed and eliminated in rabbits receiving an intramuscular dose.
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