Activity of glycylcyclines CL 329998 and CL 331002 against minocycline-resistant and other strains of methicillin-resistant Staphylococcus aureus

Abstract

Two glycylcyclines have been tested against 191 strains of methicillin-resistant Staphylococcus aureus, 72 of which were resistant to minocycline, isolated from many parts of the world. MICs of CL 329998 ranged from 0.06 to 4 mg/L, with MIC50 and MIC90 0.5 and 2 mg/L, respectively. CL 331002 was slightly less potent, having an MIC range 0.12-16 mg/L and MIC50 and MIC90 values of 1 and 4 mg/L, respectively.