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Abstract
The effects of the commercially available ketamine preparation (Ketanest™). the ketamine racemate and of the two enantiomers, the R(-)-racemate and the S(+)-racemate, as well as its drug-free solvent were examined by N-formyl-methionyl-leucyl-phenylalanine-(FMLP)- and zymosan-induced oxygen radical production of polymorphonuclear cells (PMN). The racemate and the two enantiomers of ketamine suppressed FMLP- and zymosan-induced chemiluminescence of PMN in a dose-dependent fashion to the Same extent. Therefore suppression of chemiluminescence of PMN by ketamine does not result from a specific receptor interaction.