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. 1994 May;38(5):1161–1164. doi: 10.1128/aac.38.5.1161

Inhibitory and bactericidal activities of levofloxacin against Mycobacterium tuberculosis in vitro and in human macrophages.

N Mor 1, J Vanderkolk 1, L Heifets 1
PMCID: PMC188169  PMID: 8067756

Abstract

Levofloxacin exhibited twofold greater inhibitory and bactericidal activities than ofloxacin against either extracellular or intracellular tubercle bacilli. The activities of both drugs against extracellular and intracellular bacteria were about the same, despite the accumulation of the drugs in macrophages at a level four- to fivefold greater than that in the extracellular medium. The activities of both drugs against intracellular bacteria were largely associated with the short, 2-h pulsed exposures of the infected macrophages to the concentrations which correspond to those attainable in blood during the period of the maximum concentration of drug in serum.

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Selected References

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