Candida nivariensis: Identification strategy in mycological laboratories.

J Mycol Med

Parasitologie - mycologie - médecine tropicale, CHRU de Tours, 37044 Tours, France; CEPR - Inserm U1100/équipe 3, faculté de médecine, université de Tours, 37032 Tours, France. Electronic address:

Published: December 2020

AI Article Synopsis

  • Candida nivariensis is a little-known fungus, part of the Candida glabrata complex, first identified in 2005 using DNA sequencing.* -
  • A case of deep-seated infection from this fungus occurred in a 77-year-old man after prostate surgery, with initial tests misidentifying it as C. glabrata.* -
  • Accurate identification was achieved through MALDI-TOF mass spectrometry, which proved effective, especially since the isolate was resistant to fluconazole, similar to around 20% of cases.*

Article Abstract

Candida nivariensis is a cryptic fungal species classified within the Candida glabrata complex. It was described for the first time in 2005 by the means of DNA sequencing. We report a rare case of C. nivariensis deep-seated infection occurring in a 77-year-old man hospitalized for cysto-prostatectomy. Phenotypic testing based on the direct examination and the macroscopic features of the in vitro culture initially suggested C. glabrata species, while MALDI-TOF mass spectrometry enables correct identification. The isolate was found resistant to fluconazole, like in almost 20% of the reported cases. Herein, we present our practical strategy to reliably characterize this rare cryptic species. To date, MALDI-TOF mass spectrometry-based analysis showed very good results for such a purpose.

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Source
http://dx.doi.org/10.1016/j.mycmed.2020.101042DOI Listing

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