نتایج جستجو برای: cr neoformans

تعداد نتایج: 50988  

Journal: :Infection and immunity 2009
Steven S Giles Taylor R T Dagenais Michael R Botts Nancy P Keller Christina M Hull

Cryptococcus neoformans was first described as a human fungal pathogen more than a century ago. One aspect of the C. neoformans infectious life cycle that has been the subject of earnest debate is whether the spores are pathogenic. Despite much speculation, no direct evidence has been presented to resolve this outstanding question. We present evidence that C. neoformans spores are pathogenic in...

Journal: :Revista do Instituto de Medicina Tropical de Sao Paulo 2008
Mariceli Araujo Ribeiro Popchai Ngamskulrungroj

Cryptococcus neoformans is the major cause of fungal meningitis, a potentially lethal mycosis. Bird excreta can be considered a significant environmental reservoir of this species in urban areas, thirty-three samples of pigeon excreta were collected within the city of Vitoria, Brazil. Cryptococcus neoformans was isolated and identified using standard biochemical assays in ten samples. PCR ampli...

Journal: :The Journal of clinical investigation 2010
Arturo Casadevall

The mechanism by which Cryptococcus neoformans invades the central nervous system is fundamental for understanding pathogenesis because cryptococcosis commonly presents as meningoencephalitis. There is evidence for both direct invasion of the endothelial cells lining the brain vasculature and a "Trojan horse" mechanism whereby cryptococci enter the central nervous system after macrophage ingest...

2003
Sunhee C. Lee Dennis W. Dickson Celia F. Brosnan Arturo Casadevall

Cryptococcus neoformans is an opportunistic fungus that causes life-threatening meningoencephalitis in 5-10% of patients with acquired immune deficiency syndrome. Cryptococcal meningoencephalitis is characterized by a lymphohistiocytic infiltrate, accumulation of encapsulated forms of C. neos6rmans, and varying degrees of glial reaction. Little is known about the contribution of endogenous cent...

Journal: :Memorias do Instituto Oswaldo Cruz 2006
A L T Dias M R P L Brigagão P Colepicolo A M Siqueira E G da Silva C R Paula

Some clear dissimilarities occur among the varieties of Cryptococcus neoformans but there are few studies about the differences among individual yeast antioxidant enzymes. The total superoxide dismutase (SOD) activities and the copper, zinc-depend SOD (Cu,ZnSOD) and manganese-dependent SOD (MnSOD) isoenzymes of five reference C. neoformans strains belonged to A, B, C, AD and D serotypes (Table ...

Journal: :Revista do Instituto de Medicina Tropical de Sao Paulo 2005
Maria Cecília Bianchi Soares Claudete Rodrigues Paula Amanda L T Dias Marcos Montani Caseiro Sérgio Olavo Pinto da Costa

This study involved a total of 116 samples, 79 taken from pigeon droppings and 37 of atmospheric air taken close to accumulations of excrement. Cryptococcus neoformans var. grubii was isolated from 11 (13.9%) of these samples. Other species of Cryptococcus were also isolated from these samples, such as C. albidus (12.6%) and C. laurentii (8.9%). C. neoformans was not isolated from the air sampl...

Journal: :Journal of clinical microbiology 1978
D K Paliwal H S Randhawa

A simplified Guizotia abyssinica seed medium, eliminating glucose, creatinine, and phosphate, was evaluated for the isolation and presumptive identification of Cryptococcus neoformans. Of 80 isolates of C. neoformans tested, 69 (86%) developed the characteristic brown pigment within 12 h on this medium as against only 5 isolates (6%) on the complete medium. In primary cultures of experimentally...

Journal: :Anais da Academia Brasileira de Ciencias 2015
Ana Caroline Colombo Marcio L Rodrigues

Brain infection by the fungus Cryptococcus neoformans results in an estimated 500,000 human deaths per annum. Colonization of the central nervous system (CNS) by C. neoformans causes different clinical syndromes that involve interaction of a number of fungal components with distinct brain cells. In this manuscript, our literature review confirmed the notion that the Cryptococcus field is expand...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید