RRC ID 950
Author Ohkusu M, Tangonan N, Takeo K, Kishida E, Ohkubo M, Aoki S, Nakamura K, Fujii T, Siqueira IC, Maciel EA, Sakabe S, Almeida GM, Heins-Vaccari EM, Lacaz Cda S.
Title Serotype, mating type and ploidy of Cryptococcus neoformans strains isolated from patients in Brazil.
Journal Rev. Inst. Med. Trop. Sao Paulo
Abstract Serotype, mating type and ploidy of 84 strains of Cryptococcus neoformans isolated from 61 AIDS and 23 non-AIDS patients admitted in a tertiary teaching hospital in São Paulo, Brazil were examined. Among 61 strains isolated from AIDS patients, 60 strains were var. grubii (serotype A). Only one strain was var. gattii (serotype B). No var. neoformans (serotype D) was found. Among 23 strains isolated from non-AIDS patients, 15 were var. grubii (serotype A) and the remaining 8 were var. gattii, all of which were serotype B. Seventy-three of the 75 serotype A strains were the heterothallic alpha type (MATalpha) and the remaining 2 were untypable (asexual). Most of the MATalpha strains (69/73) were haploid and the remaining 4 strains were diploid. Similarly, both of the 2 asexual strains among the 75 serotype A strains were haploid. There were no alpha-mating type (MATalpha) strains among the 84 isolates. All of the 8 var. gattii strains were serotype B and haploid. Among a total of 84 strains tested, neither serotype AD nor serotype D were found. Neither triploid nor tetraploid were found. These results suggest that the serological, sexual and ploidy characteristics in C. neoformans strains isolated from AIDS patients in São Paulo were rather simple, whereas strains isolated from non-AIDS patients presented serotype A and B with predominance of serotype A.
Volume 44(6)
Pages 299-302
Published 2002-11
PII S0036-46652002000600001
PMID 12532211
MeSH AIDS-Related Opportunistic Infections / microbiology* Brazil Cryptococcosis / microbiology* Cryptococcus neoformans / classification Cryptococcus neoformans / genetics* Cryptococcus neoformans / pathogenicity Genetic Variation Humans Ploidies* Serotyping
IF 1.489
Resource
Pathogenic microorganisms IFM 51611 IFM 51612 IFM 51613 IFM 51614 IFM 51615 IFM 51616 IFM 51617 IFM 51618 IFM 51619 IFM 51620 IFM 51621 IFM 51622 IFM 51623 IFM 51624 IFM 51625 IFM 51626 IFM 51627 IFM 51628 IFM 51629 IFM 51630 IFM 51631 IFM 51632 IFM 51633 IFM 51634 IFM 51635 IFM 51636 IFM 51637 IFM 51638 IFM 51639 IFM 51640 IFM 51641 IFM 51642 IFM 51643 IFM 51644 IFM 51645 IFM 51646 IFM 51647 IFM 51648 IFM 51649 IFM 51650 IFM 51651 IFM 51652 IFM 51653 IFM 51654 IFM 51655 IFM 51656 IFM 51657 IFM 51658 IFM 51659 IFM 51660 IFM 51661 IFM 51662 IFM 51663 IFM 51664 IFM 51665 IFM 51666 IFM 51667 IFM 51668 IFM 51669 IFM 51670 IFM 51671 IFM 51672 IFM 51673 IFM 51674 IFM 51675 IFM 51676 IFM 51677 IFM 51678 IFM 51679 IFM 51680 IFM 51681 IFM 51682 IFM 51683 IFM 51684 IFM 51685 IFM 51686 IFM 51687 IFM 51688 IFM 51689 IFM 51690 IFM 51691 IFM 51692 IFM 51693 IFM 51694