Abstract

The effect of erythromycin, doxycycline and phenoxymethylpenicillin on human polymorphonuclear leucocyte (PMNL) chemotaxis was studied in vitro with Boyden's filter technique. Both erythromycin base and 2'-acetyl erythromycin stearate increased the PMNL chemotaxis significantly at concentrations greater than or equal to 50 microM, 2'-acetyl erythromycin stearate also at concentrations of 2.5-5 microM. Phenoxymethyl-penicillin reduced migration at 500 microM but lower concentrations had no significant effect. Doxycycline prevented migration significantly at concentrations greater than or equal to 50 microM.

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