Effects of chlorhexidine solution on neutrophil locomotion in vitro.

The aim of this study was to ascertain the effect of low concentrations of chlorhexidine on the locomotor behaviour of neutrophils. A special feature was the use of a direct test of chemotaxis. Neutrophils recovered from peripheral blood of healthy adult volunteers were tested for chemokinesis and chemotaxis in the presence of chlorhexidine. A moderate dose-related direct response was observed in respect of both these parameters. It was also apparent that increasing concentrations of the drug inhibited a greater proportion of cells, so that there was total immobility at 0.2 per cent and many cells appeared lysed.