Origin of Cryptococcus neoformans var. neoformans Diploid Strains
نویسندگان
چکیده
منابع مشابه
Origin of Cryptococcus neoformans var. neoformans diploid strains.
The basidiomycetous yeast Cryptococcus neoformans is an important human fungal pathogen. Two varieties, C. neoformans var. neoformans and C. neoformans var. gattii, have been identified. Both are heterothallic with two mating types, MATa and MATalpha. Some rare isolates are self-fertile and are considered occasional diploid or aneuploid strains. In the present study, 133 isolates, mostly from I...
متن کاملCryptococcus neoformans Strains
We examined the ploidy of C. neoformans strains using both laser scanning cytometry and a fluorescence microscope equipped with a photomultiplier. Haploid strains consisted of normal-sized cells with a haploid DNA amount. In the cell population there were also large-sized cells with a diploid DNA amount. These large cells in haploid strains were isolated using a Skerman micromanipulator, cultiv...
متن کاملGenetic relationship between Cryptococcus neoformans var. neoformans strains of serotypes A and D.
Cryptococcus neoformans serotypes A and D are responsible for the overwhelming majority of infections in patients with AIDS. The genetic relationship between the serotypes is poorly understood, but there are significant differences in the epidemiology and clinical presentation of serotype A and D infections. We evaluated the genetic relationship between reference C. neoformans strains belonging...
متن کاملPrevalence of Cryptococcus neoformans var. neoformans (Serotype D) and Cryptococcus neoformans var. grubii (Serotype A) isolates in New York City.
Analysis of 40 New York City Cryptococcus neoformans isolates revealed that 39 were typeable, of which 85 and 12.5% were Cryptococcus neoformans var. grubii (serotype A) and Cryptococcus neoformans var. neoformans (serotype D), respectively. The prevalence of serotype D isolates in New York City appears to be significantly higher than indicated by previous studies of North American isolates.
متن کاملIn vitro antifungal susceptibility of clinical isolates of Cryptococcus neoformans var. neoformans and C. neoformans var. gattii.
One of the differences observed between the two varieties of Cryptococcus neoformansis the greater difficulty to achieve an adequate therapeutical response in patients affected by C. neoformans var. gattii, an observation that has been validated in vitro only rarely. The aim of this work was to study the susceptibility patterns of 35 Colombian clinical isolates of C. neoformans, 20 of which bel...
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ژورنال
عنوان ژورنال: Journal of Clinical Microbiology
سال: 2001
ISSN: 0095-1137,1098-660X
DOI: 10.1128/jcm.39.11.3889-3894.2001