The Journal of antimicrobial chemotherapy · 2019
Tedizolid in vitro activity against Gram-positive clinical isolates causing bone and joint infections in hospitals in the USA and Europe (2014-17).
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Carvalhaes Cecilia G, Sader Hélio S, Flamm Robert K, Mendes Rodrigo E
Аннотация
BACKGROUND: Despite the advances in current healthcare, bone and joint infections (BJIs) are a major clinical challenge that frequently involve prolonged systemic antibiotic use. Healthcare providers consider tedizolid an attractive candidate for therapy in adults and children with BJI.
OBJECTIVES: We tested tedizolid against a US and European collection of Gram-positive BJI isolates (n = 797) consecutively collected from 2014 to 2017.
METHODS: Organisms were tested by broth microdilution susceptibility methods following current CLSI guidelines and interpreted by both CLSI and EUCAST breakpoint criteria.
RESULTS: Staphylococcus aureus (59.3%; 58.6% in the USA and 60.4% in Europe) was the most common pathogen with a 29.6% MRSA rate and tedizolid MIC50/90 of 0.12/0.25 mg/L (100% susceptible). CoNS (15.0% of BJI in adults and <5% in children) had tedizolid MIC50/90 values of 0.12/0.12 mg/L (99.1% susceptible). Tedizolid exhibited MIC50/90 values of 0.12/0.25 mg/L for all streptococci and enterococci. Overall, high susceptibility rates (>95%) for vancomycin, daptomycin and linezolid were observed and, based on MIC90 values, tedizolid (MIC90 0.12-0.25 mg/L) was 4- to 8-fold more potent than linezolid (MIC90 0.5-2 mg/L) against this collection of Gram-positive pathogens causing BJI.
CONCLUSIONS: This study showed that tedizolid had potent in vitro activity against contemporary Gram-positive cocci causing BJI in adults and children in US and European hospitals.
OBJECTIVES: We tested tedizolid against a US and European collection of Gram-positive BJI isolates (n = 797) consecutively collected from 2014 to 2017.
METHODS: Organisms were tested by broth microdilution susceptibility methods following current CLSI guidelines and interpreted by both CLSI and EUCAST breakpoint criteria.
RESULTS: Staphylococcus aureus (59.3%; 58.6% in the USA and 60.4% in Europe) was the most common pathogen with a 29.6% MRSA rate and tedizolid MIC50/90 of 0.12/0.25 mg/L (100% susceptible). CoNS (15.0% of BJI in adults and <5% in children) had tedizolid MIC50/90 values of 0.12/0.12 mg/L (99.1% susceptible). Tedizolid exhibited MIC50/90 values of 0.12/0.25 mg/L for all streptococci and enterococci. Overall, high susceptibility rates (>95%) for vancomycin, daptomycin and linezolid were observed and, based on MIC90 values, tedizolid (MIC90 0.12-0.25 mg/L) was 4- to 8-fold more potent than linezolid (MIC90 0.5-2 mg/L) against this collection of Gram-positive pathogens causing BJI.
CONCLUSIONS: This study showed that tedizolid had potent in vitro activity against contemporary Gram-positive cocci causing BJI in adults and children in US and European hospitals.