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Bartosz Rybak on Muck Rack

Bartosz Rybak

As seen in: Nature, MDPI
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Articles

Non-mannitol-fermenting Staphylococcus aureus strains: a new perspective on diagnostic challenge

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By Maja Kosecka-Strojek, Bartosz Rybak, Marek Bronk, Katarzyna Garbacz, Katarzyna Juszczuk, Ewa Kwapisz
| Nature Verified
Abstract Mannitol fermentation is a key marker for identifying Staphylococcus aureus on mannitol salt agar (MSA). However, strains lacking this ability may arise, causing diagnostic difficulties. This study aimed to characterize mannitol-negative S. aureus strains and evaluate their biochemical identification, antimicrobial resistance patterns, and molecular characteristics. Among 1829 analyzed S. aureus strains, 2.2% did not ferment mannitol on MSA. All strains showed typical features of S.
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High Prevalence of Plasmid-Mediated Quinolone Resistance among ESBL/AmpC-Producing Enterobacterales from Free-Living Birds in Poland

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By Beata Furmanek-Blaszk, Marian Sektas, Bartosz Rybak
| MDPI
1. Introduction Fluoroquinolones are commonly used in antimicrobial treatment in both human and veterinary medicine worldwide because of their pharmacodynamic and pharmacokinetic properties [1]. As a consequence of their intense use, the quinolone resistance rate has increased considerably over the last few years. The main mechanism of quinolone resistance is the accumulation of mutations in the genes encoding the subunits of the drug’s target enzymes: DNA gyrase and DNA topoisomerase.
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