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The microbiological efficacy of the combination of fosfomycin and vancomycin against clinically relevant staphylococci

Mikrobiologische Wirksamkeit der Kombination Fosfomycin-Vancomycin gegen klinisch relevante Staphylokokken-Isolate

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Summary

Infections with multiresistant strains ofStaphylococcus aureus andStaphylococcus epidermidis pose severe clinical problems. The drug of choice in such cases, vancomycin, is potentially ototoxic and nephrotoxic and this may give rise to additional problems in the patient. Fosfomycin has been shown to be nephroprotective when given with vancomycin and with other nephrotoxic drugs. We report the inhibitory and bactericidal activity of fosfomycin and vancomycin alone and in combination against 26 clinically relevant strains ofS. aureus and 48 strains ofS. epidermidis. In most instances these two drugs showed indifferent or additive effects, synergism or antagonism was only rarely observed. Assessment of the bactericidal action of the combination revealed similar effects. The combination of fosfomycin and vancomycin may, therefore, be beneficial in clinical situations where the nephrotoxic effect of vancomycin cannot be tolerated.

Zusammenfassung

Infektionen mit multiresistentenStaphylococcus epidermidis- oderStaphylococcus aureus-Stämmen stellen schwerwiegende klinische Probleme dar. Weitere Probleme können sich daraus ergeben, daß Vancomycin, das Mittel der Wahl, ein ototoxisches und nephrotoxisches Potential besitzt. Von Fosfomycin ist bekannt, daß es vor den nephrotoxischen Wirkungen des Vancomycin und anderer verschiedener Substanzen schützen kann. Wir berichten hier über die inhibitorische und bakterizide Wirksamkeit von Vancomycin und Fosfomycin allein und in Kombination gegenüber 26S. aureus- und 48S. epidermidis-Isolaten aus klinischem Material. Dabei zeigte die Kombination meist indifferente oder additive Effekte, während Synergismus oder Antagonismus nur selten beobachtet wurden. Wenn die bakterizide Wirkung der Kombination gemessen wurde, waren die Ergebnisse ähnlich. Die Kombination aus Vancomycin und Fosfomycin kann daher in klinischen Situationen, wo die potentiell nierenschädigende Wirkung des Vancomycin nicht toleriert werden kann, von Nutzen sein.

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Gatermann, S., Marre, R. & Schulz, E. The microbiological efficacy of the combination of fosfomycin and vancomycin against clinically relevant staphylococci. Infection 17, 35–37 (1989). https://doi.org/10.1007/BF01643498

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