Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 3 de 3
Filtrar
Mais filtros











Intervalo de ano de publicação
1.
Mem Inst Oswaldo Cruz ; 104(4): 662-4, 2009 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19722095

RESUMO

Cryptococcus neoformans and Cryptococcus gattii are important agents of meningoencephalitis in humans in the city of Belém. This clinical data suggests that the region may be a highly endemic area for the pathogenic Cryptococcus species within the state of Pará (PA), Northern Brazil. Preliminary analysis of 11 environmental samples from the city of Belém showed two positive locations, including a hollow of a kassod tree (Senna siamea) colonized simultaneously by C. gattii molecular type VGII and C. neoformans molecular type VNI, and a birdcage in a commercial aviary positive for C. neoformans, molecular type VNI. This is the first evidence of an environmental occurrence of molecular types VNI and VGII in PA.


Assuntos
Cryptococcus gattii/isolamento & purificação , Cryptococcus neoformans/isolamento & purificação , Abrigo para Animais , Árvores/microbiologia , Animais , Aves , Brasil , Cryptococcus gattii/genética , Cryptococcus neoformans/genética , Reação em Cadeia da Polimerase , Polimorfismo de Fragmento de Restrição
2.
Mem. Inst. Oswaldo Cruz ; 104(4): 662-664, July 2009. ilus
Artigo em Inglês | LILACS | ID: lil-523738

RESUMO

Cryptococcus neoformans and Cryptococcus gattii are important agents of meningoencephalitis in humans in the city of Belém. This clinical data suggests that the region may be a highly endemic area for the pathogenic Cryptococcus species within the state of Pará (PA), Northern Brazil. Preliminary analysis of 11 environmental samples from the city of Belém showed two positive locations, including a hollow of a kassod tree (Senna siamea) colonized simultaneously by C. gattii molecular type VGII and C. neoformans molecular type VNI, and a birdcage in a commercial aviary positive for C. neoformans, molecular type VNI. This is the first evidence of an environmental occurrence of molecular types VNI and VGII in PA.


Assuntos
Animais , Cryptococcus gattii/isolamento & purificação , Cryptococcus neoformans/isolamento & purificação , Abrigo para Animais , Árvores/microbiologia , Aves , Brasil , Cryptococcus gattii/genética , Cryptococcus neoformans/genética , Reação em Cadeia da Polimerase , Polimorfismo de Fragmento de Restrição
3.
J Clin Microbiol ; 41(1): 73-7, 2003 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-12517828

RESUMO

Cryptococcus neoformans is an important zoopathogen, and it is one of the most prevalent lethal mycotic agents. Its polysaccharide capsule, synthesized in vivo and in vitro, is a virulence factor, contains predominantly glucuronoxylomannan, and is responsible for the antigenic differentiation of serotypes A, B, C, D, and AD. A total of 467 isolates of C. neoformans obtained from clinical and environmental sources from Brazilian regions were studied serologically by using the Crypto Check Iatron RM 304-K kit. Serotyping of the clinical isolates showed the following prevalences of the serotypes: A (77.95%), followed by B (18.2%), AD (1.3%), D (0.4%), C (0.2%), and untypeable (1.93%). The epidemiology of serotype A in the Brazilian southern and southeastern regions reproduces the picture observed worldwide. In contrast, serotype B was the most frequent agent of cryptococcosis in the northeastern region, occurring nearly equally in male and female healthy hosts. Among the isolates from environmental sources, serotypes A and B were found to occur in the hollows of tropical trees of the genera Cassia, Ficus, and MOQUILLEA: The few isolates from Eucalyptus camaldulensis debris were serotypes A and B and untypeable. Overall, no association with a specific host tree was identified for these serotypes, denoting a distinct ecoepidemiological regional pattern. The one serotype C isolate was recovered from a human immunodeficiency virus-negative host. Serotype AD predominated over serotype D among both clinical and environmental isolates.


Assuntos
Cryptococcus neoformans/classificação , Microbiologia Ambiental , Infecções Oportunistas Relacionadas com a AIDS/microbiologia , Brasil , Criptococose/microbiologia , Cryptococcus neoformans/isolamento & purificação , Infecções por HIV/microbiologia , Humanos , Sorotipagem , Fatores Sexuais
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA