A Novel Flucytosine-Resistant Yeast Species, Candida pseudoaaseri, Causes Disease in a Cancer Patient ▿
| Autor: | Marcel Erhard, Roland Pfüller, Yvonne Gräser, Marizeth Groenewald |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Microbiology (medical)
Male Antifungal Agents Molecular Sequence Data Flucytosine Drug resistance Mycology DNA Ribosomal Microbiology Candida tropicalis Immunocompromised Host Drug Resistance Fungal Neoplasms DNA Ribosomal Spacer medicine Cluster Analysis Humans Blood culture Internal transcribed spacer DNA Fungal Mycological Typing Techniques Phylogeny Candida medicine.diagnostic_test biology Fungal genetics Candidemia Genes rRNA RNA Fungal Sequence Analysis DNA Ribosomal RNA Middle Aged biology.organism_classification Yeast RNA Ribosomal medicine.drug |
| Popis: | Some members of the genus Candida are among the most common human fungal pathogens and cause serious diseases especially in immunocompromised people. A yeast was isolated from a blood culture from an immunocompromised cancer patient who suffered from acute pneumonia. The growth characteristics of the yeast on CHROMagar Candida were similar to those of Candida tropicalis , whereas the API ID 32C system identified the yeast as Candida silvicola . On the basis of the nucleotide divergence in the D1/D2 domain of the 26S nuclear rRNA (nrRNA) gene, as well as the internal transcribed spacer (ITS) domain of the nrRNA gene region, a new species, Candida pseudoaaseri sp. nov. with type strain VK065094 (CBS 11170 T ), which was found to be closely related to Candida aaseri , is proposed. While C. aaseri strains were susceptible to all tested antifungals, the new species is resistant to flucytosine and may also be distinguished from C. aaseri by its ability to assimilate l -rhamnose, whereas its colony morphology on CHROMagar Candida may be helpful for differentiation. |
| Databáze: | OpenAIRE |
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