Production of Diagnostic Pigment by Phenoloxidase Activity of Cryptococcus neoformans
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چکیده
منابع مشابه
Pigment Production on L-Tryptophan Medium by Cryptococcus gattii and Cryptococcus neoformans
In recent years strains previously grouped within Cryptococcus neoformans have been divided into two species C. neoformans and C. gattii, with Cryptococcus neoformans comprising serotypes A, D, and AD and C. gattii comprising serotypes B and C. Cryptococcus neoformans have also been subdivided into two varieties C. neoformans var. grubii, serotype A, and C. neoformans var. neoformans, serotype ...
متن کاملGrowth and pigment production on D-tryptophan medium by Cryptococcus gattii, Cryptococcus neoformans, and Candida albicans.
Given the increasing prevalence of cryptococcosis caused by Cryptococcus gattii (serotypes B and C) strains, there is a need for rapid and reliable tests that discriminate C. gattii from Cryptococcus neoformans (serotypes A, D, and AD). Seventy-two C. neoformans strains, sixty-seven C. gattii strains, and five Candida albicans strains were analyzed for their ability to grow and produce pigment ...
متن کاملDETECTION OF CRYPTOCOCCUS NEOFORMANS BY SEMINESTED PCR IN CEREBROSPINAL FLUID
ABSTRACT Life-threatening infections caused by the encapsulated fungal pathogen Cryptococcus neoformans have been increasing steadily over the past 10 years. Cryptococcus neoformans is recognized as the most frequent fungal infection of the central nervous system (CNS) in immunocompetent as well as immunocompromised patients. We report the development of a semi-nested- PCR-based assay for the ...
متن کاملComparison of Different Media for the Pigment Production of Cryptococcus neoformans
InTRoduCTIon Cryptococcosis is an acute, subacute or chronic fungal disease which is caused by encapsulated basidiomycetous yeasts which belong to the genus, Cryptococcus [1]. This yeast is a particularly fascinating fungal pathogen, because it crosses the entire spectrum of the host immunity. For instance, it produces infections in apparently immunocompetent patients without any known underlyi...
متن کاملPigment production of Cryptococcus neoformans grown with extracts of Guizotia abyssinica.
Brown pigment(s) formed in Cryptococcus neoformans when grown on media containing extracts of the seeds of Guizotia abyssinica cannot be extracted by common organic solvents or by 6 n HCl or 2 n NaOH. A similar pigmentation was observed in C. neoformans when grown on a medium containing caffeic acid isolated from the hydrolyzed methanol extract of G. abyssinica seeds. Its methyl ester and the d...
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ژورنال
عنوان ژورنال: Applied Microbiology
سال: 1972
ISSN: 0003-6919
DOI: 10.1128/am.24.5.824-830.1972