Prevalence, Distribution, and Antifungal Susceptibility Profiles of Candida parapsilosis, C-orthopsilosis, and C-metapsilosis in a Tertiary Care Hospital

• Type: Article in International Scientific Journal
• Date: 2009

Authors

Silva, AP (Author) Other; miranda, im (Author) FMUP; Carmen Silva (Author) FMUP; pina-vaz, c (Author) FMUP; rodrigues, ag (Author) FMUP

Journal

Title: Journal of Clinical Microbiology

Vol. 47

Pages: 2392-2397

ISSN: 0095-1137

Publisher: American Society for Microbiology

Indexing

ISI Web of Knowledge - 102 Citations

Scopus - 108 Citations

Other information

Authenticus ID: P-003-H49

DOI: 10.1128/jcm.02379-08

Abstract (EN): Candida parapsilosis, an emergent agent of nosocomial infections, was previously made up of a complex of three genetically distinct groups (groups I, II, and III). Recently, the C. parapsilosis groups have been renamed as distinct species: C. parapsilosis sensu stricto, C. orthopsilosis, and C. metapsilosis. In Portugal, no data pertaining to the distribution and antifungal susceptibility of these Candida species are yet available. In the present report, we describe the incidence and distribution of C. parapsilosis sensu stricto, C. orthopsilosis, and C. metapsilosis among 175 clinical and environmental isolates previously identified by conventional methods as C. parapsilosis. We also evaluated the in vitro susceptibilities of the isolates to fluconazole, voriconazole, posaconazole, amphotericin B, and two echinocandins, caspofungin and anidulafungin. Of the 175 isolates tested, 160 (91.4%) were identified as C. parapsilosis sensu stricto, 4 (2.3%) were identified as C. orthopsilosis, and 5 (2.9%) were identified as C. metapsilosis. Six isolates corresponded to species other than the C. parapsilosis group. Interestingly, all isolates from blood cultures corresponded to C. parapsilosis sensu stricto. Evaluation of the antifungal susceptibility profile showed that only nine (5.6%) C. parapsilosis sensu stricto strains were susceptible-dose dependent or resistant to fluconazole, and a single strain displayed a multiazole-resistant phenotype; two (1.3%) C. parapsilosis sensu stricto strains were amphotericin B resistant. All C. orthopsilosis and C. metapsilosis isolates were susceptible to azoles and amphotericin B. A high number of strains were nonsusceptible to the echinocandins (caspofungin and anidulafungin).

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6