Concepedia

High Concentrations of Manganese in Mueller-Hinton Agar Increase MICs of Tigecycline Determined by Etest

Carlos Fernández-Mazarrasa, Olav Mazarrasa, Jorge Calvo, Asunción del Arco, Luis Martínez‐Martínez

Journal of Clinical Microbiology · 2009 · 71 citations · 12 references

DOI

Concepts

Abstract

MICs of tigecycline determined by Etest were 4 to 12 times (three ATCC strains) and 2 to 8 times (50 clinical isolates) higher in Mueller-Hinton agar from Merck than in Mueller-Hinton agar from either Oxoid or Difco. This was related to a much higher concentration of manganese in the medium from Merck.

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