Abstract:
:The use of molecular identification techniques has revealed an increasing number of new species within Aspergillus section Terrei. We phenotyped a set of 26 clinical isolates that showed genetic differences from Aspergillus terreus sensu stricto by analyzing sequences from PCR-amplified β-tubulin and calmodulin genes and the internal transcribed spacer region. Since the isolates were phylogenetically and morphologically different from all of the members of Aspergillus section Terrei, they are described here as a new species, Aspergillus citrinoterreus, so named because it produces a diffusible yellowish pigment in agar. A. citrinoterreus isolates were significantly more susceptible to itraconazole, voriconazole, and posaconazole than A. terreus sensu stricto isolates were; in contrast, the amphotericin B MICs for both species were high. A. citrinoterreus was found in clinical samples from patients with proven or probable invasive aspergillosis and colonized patients, none of whom had hematological malignancies as predisposing conditions. However, they did have other underlying conditions such as chronic obstructive pulmonary disease, cirrhosis, and cancer or had received a solid organ transplants and presented not only with invasive pulmonary aspergillosis but also with mediastinitis. A. citrinoterreus isolates were detected for the first time in 2002. In all cases of invasive aspergillosis, A. citrinoterreus was found to be a copathogen, mostly with A. fumigatus.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Guinea J,Sandoval-Denis M,Escribano P,Peláez T,Guarro J,Bouza Edoi
10.1128/JCM.03088-14subject
Has Abstractpub_date
2015-02-01 00:00:00pages
611-7issue
2eissn
0095-1137issn
1098-660Xpii
JCM.03088-14journal_volume
53pub_type
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