Search results
Results from the WOW.Com Content Network
A new species name, Cryptococcus deneoformans, is used for the former C. neoformans var. neoformans. C. gattii is divided into five species. [citation needed] The teleomorph was first described in 1975 by K.J. Kwon-Chung, who obtained cultures of Filobasidiella neoformans by crossing strains of the yeast C. neoformans.
Cryptococcus gattii, formerly known as Cryptococcus neoformans var. gattii, is an encapsulated yeast found primarily in tropical and subtropical climates. Its teleomorph is Filobasidiella bacillispora , a filamentous fungus belonging to the class Tremellomycetes .
Cryptococcosis is a potentially fatal fungal infection of mainly the lungs, presenting as a pneumonia, and in the brain, where it appears as a meningitis. [4] [9] Coughing, difficulty breathing, chest pain and fever are seen when the lungs are infected. [5]
It may also infect organ-transplant recipients and people receiving certain cancer treatments. [9] In its yeast state C. neoformans is found in the droppings of wild birds, often pigeons; when dust of the droppings is stirred up, it can infect humans or pets
Cryptococcus species (cryptococcus gatti and neoformans) have a polysaccharide capsule surrounding the yeasts to shield the yeast from immune system killing. Cryptococcus also has a cell wall laccase , a copper-containing cell wall enzyme that increases the release of dopamine and prostaglandin E2 inflammatory markers in humans to increase ...
The genus Filobasidiella forms basidia on hyphae but the main infectious stage is more commonly known by the anamorphic yeast name Cryptococcus, e.g. Cryptococcus neoformans [19] and Cryptococcus gattii. [18] The dimorphic Basidiomycota with yeast stages and the pleiomorphic rusts are examples of fungi with anamorphs, which are the asexual ...
Infecting C. neoformans cells are usually phagocytosed by alveolar macrophages in the lung. [11] The invading C. neoformans cells may be killed by the release of oxidative and nitrosative molecules by these macrophages. [12] However some C. neoformans cells may survive within the macrophages. [11]
C. neoformans is the most common pathogen to cause fungal meningitis. Aspergillus - Aspergillus infections account for 5% of fungal infections involving the central nervous system. Risk factors