Mycelial Phase of Paracoccidioides brasiliensis and Blastomyces dermatitidis: an Electron Microscope Study
AUTOR(ES)
Carbonell, Luis M.
RESUMO
A comparative study of the mycelial phase of Paracoccidioides brasiliensis and Blastomyces dermatitidis reveals that both fungi are very much alike, containing multiple nuclei and nuclear pores, mitochondria, ribosomes, scarce endoplasmic reticulum, intracytoplasmic membrane systems, glycogen, and vacuoles. Shadowed cell walls show fine fibrillar surfaces that contrast with those in the yeast phase. The intracytoplasmic membrane system is continuous with the plasma membrane and is similar to bacterial mesosomes. Granules with light cores and dark rims are observed in the plasma membrane. Live hyphae growing inside a dead hypha are found much more frequently in immersed cultures than in solid-medium cultures, suggesting that breakage of the hypha could elicit this phenomenon.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=252327Documentos Relacionados
- Mycelial- to yeast-phase transitions of the dimorphic fungi Blastomyces dermatitidis and Paracoccidioides brasiliensis.
- Yeast- and Mycelial-Phase Antigens of Blastomyces dermatitidis: Comparison Using Disc Gel Electrophoresis
- Cell Wall Changes During the Budding Process of Paracoccidioides brasiliensis and Blastomyces dermatitidis
- Immunomodulation by Blastomyces dermatitidis: functional activity of murine peritoneal macrophages.
- Ultrastructural Changes During the Yeastlike to Mycelial-Phase Conversion of Blastomyces dermatitidis and Histoplasma capsulatum
