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Molecular Mechanisms and Clinical Impact of Acquired and Intrinsic Fosfomycin Resistance

Genome Damage and Stability Centre, University of Sussex, Falmer, Science Park Road, Brighton, East Sussex BN1 9RQ, UK
Centro Nacional de Biotecnología (CSIC), Departamento de Biotecnología Microbiana, Calle Darwin 3, 28049 Madrid, Spain
Institute for Biology, Freie Universität Berlin, Königin-Luise-Str. 1-3, 14195 Berlin, Germany
Authors to whom correspondence should be addressed.
Antibiotics 2013, 2(2), 217-236;
Received: 11 March 2013 / Revised: 5 April 2013 / Accepted: 8 April 2013 / Published: 16 April 2013
(This article belongs to the Special Issue Antibiotic Resistance)
Bacterial infections caused by antibiotic-resistant isolates have become a major health problem in recent years, since they are very difficult to treat, leading to an increase in morbidity and mortality. Fosfomycin is a broad-spectrum bactericidal antibiotic that inhibits cell wall biosynthesis in both Gram-negative and Gram-positive bacteria. This antibiotic has a unique mechanism of action and inhibits the initial step in peptidoglycan biosynthesis by blocking the enzyme, MurA. Fosfomycin has been used successfully for the treatment of urinary tract infections for a long time, but the increased emergence of antibiotic resistance has made fosfomycin a suitable candidate for the treatment of infections caused by multidrug-resistant pathogens, especially in combination with other therapeutic partners. The acquisition of fosfomycin resistance could threaten the reintroduction of this antibiotic for the treatment of bacterial infection. Here, we analyse the mechanism of action and molecular mechanisms for the development of fosfomycin resistance, including the modification of the antibiotic target, reduced antibiotic uptake and antibiotic inactivation. In addition, we describe the role of each pathway in clinical isolates. View Full-Text
Keywords: fosfomycin resistance; molecular mechanisms fosfomycin resistance; molecular mechanisms
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Castañeda-García, A.; Blázquez, J.; Rodríguez-Rojas, A. Molecular Mechanisms and Clinical Impact of Acquired and Intrinsic Fosfomycin Resistance. Antibiotics 2013, 2, 217-236.

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