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Susceptibility

Antibacterial Activity of Eravacycline (TP-434), a Novel Fluorocycline, against Hospital and Community Pathogens

J. A. Sutcliffe, W. O'Brien, C. Fyfe, T. H. Grossman
J. A. Sutcliffe
Tetraphase Pharmaceuticals, Inc., Watertown, Massachusetts, USA
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W. O'Brien
Tetraphase Pharmaceuticals, Inc., Watertown, Massachusetts, USA
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C. Fyfe
Tetraphase Pharmaceuticals, Inc., Watertown, Massachusetts, USA
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T. H. Grossman
Tetraphase Pharmaceuticals, Inc., Watertown, Massachusetts, USA
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DOI: 10.1128/AAC.01288-13
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ABSTRACT

Eravacycline (TP-434 or 7-fluoro-9-pyrrolidinoacetamido-6-demethyl-6-deoxytetracycline) is a novel fluorocycline that was evaluated for antimicrobial activity against panels of recently isolated aerobic and anaerobic Gram-negative and Gram-positive bacteria. Eravacycline showed potent broad-spectrum activity against 90% of the isolates (MIC90) in each panel at concentrations ranging from ≤0.008 to 2 μg/ml for all species panels except those of Pseudomonas aeruginosa and Burkholderia cenocepacia (MIC90 values of 32 μg/ml for both organisms). The antibacterial activity of eravacycline was minimally affected by expression of tetracycline-specific efflux and ribosomal protection mechanisms in clinical isolates. Furthermore, eravacycline was active against multidrug-resistant bacteria, including those expressing extended-spectrum β-lactamases and mechanisms conferring resistance to other classes of antibiotics, including carbapenem resistance. Eravacycline has the potential to be a promising new intravenous (i.v.)/oral antibiotic for the empirical treatment of complicated hospital/health care infections and moderate-to-severe community-acquired infections.

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Antibacterial Activity of Eravacycline (TP-434), a Novel Fluorocycline, against Hospital and Community Pathogens
J. A. Sutcliffe, W. O'Brien, C. Fyfe, T. H. Grossman
Antimicrobial Agents and Chemotherapy Oct 2013, 57 (11) 5548-5558; DOI: 10.1128/AAC.01288-13

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Antibacterial Activity of Eravacycline (TP-434), a Novel Fluorocycline, against Hospital and Community Pathogens
J. A. Sutcliffe, W. O'Brien, C. Fyfe, T. H. Grossman
Antimicrobial Agents and Chemotherapy Oct 2013, 57 (11) 5548-5558; DOI: 10.1128/AAC.01288-13
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