1. Detection of Antibiotic-Resistance by MALDI-TOF Mass Spectrometry: An Expanding Area
- Author
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Walter Florio, Lelio Baldeschi, Cosmeri Rizzato, Arianna Tavanti, Emilia Ghelardi, and Antonella Lupetti
- Subjects
antimicrobial susceptibility testing ,blood culture ,rapid AST ,microdroplet growth assay ,MBT-ASTRA ,MALDI-TOF ,Microbiology ,QR1-502 - Abstract
Several MALDI-TOF MS-based methods have been proposed for rapid detection of antimicrobial resistance. The most widely studied methods include assessment of β-lactamase activity by visualizing the hydrolysis of the β-lactam ring, detection of biomarkers responsible for or correlated with drug-resistance/non-susceptibility, and the comparison of proteomic profiles of bacteria incubated with or without antimicrobial drugs. Antimicrobial-resistance to a number of antibiotics belonging to different classes has been successfully tested by MALDI-TOF MS in a variety of clinically relevant bacterial species including members of Enterobacteriaceae family, non-fermenting Gram-negative bacteria, Gram-positive cocci, anaerobic bacteria and mycobacteria, opening this field to further clinically important developments. Early detection of drug-resistance by MALDI-TOF MS can be particularly helpful for clinicians to streamline the antibiotic therapy for a better outcome of patients with systemic infection, in all cases where a prompt and effective antibiotic treatment is essential to preserve organ function and/or patient survival.
- Published
- 2020
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