1. Candida auris Antifungal Resistance, Virulence and Susceptibility to a Novel Nitric Oxide-Releasing Microparticle and Its Correlations to Clade Identification.
- Author
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Valdez, Alessandro F., Bohner, Flora, Goldman, Joshua P., Jaquiery, Ali B., Amaral, Eduardo V. C. do, Correa-Junior, Dario, Draganski, Andrew, Nimrichter, Leonardo, Nosanchuk, Joshua D., and Zamith-Miranda, Daniel
- Subjects
GREATER wax moth ,PATHOGENIC fungi ,CANDIDA ,DEATH rate ,MEDICAL centers - Abstract
Candida auris is a globally emerging pathogenic fungus described in Japan in 2009. This fungus has been identified mainly in nosocomial environments, associated with a high frequency of multidrug-resistant strains, and mortality rates reach 60%. C. auris is divided into 6 biogeographic clades, and there is a correlation between the clades and resistance against antifungals. In the current report, 8 strains of C. auris isolated in the Montefiore Medical Center, Bronx were analyzed to assess their clade (via ClaID) and common molecular determinants of antifungal resistance. We assessed antifungal resistance as well as the efficacy of a novel nitric oxide-donating microparticle as an alternative approach against C. auris in vitro through microplate susceptibility tests. Virulence was also determined in a Galleria mellonella model. Our results indicate that 7 out of 8 strains, belonging to clade 1, were resistant to fluconazole, while clade 2 was susceptible. Additionally, the clade 2 strain was more susceptible to treatment with the microparticle, while also being more virulent in an invertebrate model of infection. Our findings were then correlated to visualize parallels between clade identification and resistance/virulence patterns. [ABSTRACT FROM AUTHOR]
- Published
- 2025
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