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Literature DB >> 5553288

Pigment formation for differentiating Cryptococcus neoformans from Candida albicans.

Abstract

When 2,3- or 3,4-dihydroxybenzoic acid, 3,4-dihydroxyphenylalanine, and 3,4-dihydroxycinnamic acid are added to growth media, they are converted to a characteristic brown pigment by Cryptococcus neoformans. This pigment formation has hitherto been encountered only when this microorganism was cultivated on media containing Guizotia abyssinica seed. This phenomenon can be used for differentiating Cryptococcus neoformans from Candida albicans. Possible precursors of these o-diphenols (quinic acid, aromatic monohydroxy acids, or tyrosine) do not give rise to the brown pigmentation.

Entities: Chemical Disease Species

Mesh：

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Year: 1971 PMID： 5553288 PMCID： PMC377219 DOI： 10.1128/am.21.3.541-542.1971

Source DB: PubMed Journal: Appl Microbiol ISSN： 0003-6919

8 in total

1. [MEMBRANE FILTRATION AND GUIZOTIA ABYSSINICA CULTURE MEDIA FOR THE DEMONSTRATION OF CRYPTOCOCCUS NEOFORMANS (BROWN COLOR EFFECT)].

Authors: F STAIB
Journal: Z Hyg Infektionskr Date: 1963-10-25

7. The production of an N-acylanthranilic acid from shikimic acid and the effect on iron deficiency on the biosynthesis of other aromatic compounds by Aerobacter aerogenes.

Authors: C Ratledge
Journal: Biochim Biophys Acta Date: 1967-06-13

8. Modified Littman oxgall agar to isolate Cryptococcus neoformans.

Authors: R W Botard; D C Kelley
Journal: Appl Microbiol Date: 1968-05

8 in total

18 in total

Pigment formation for differentiating Cryptococcus neoformans from Candida albicans.

1. [MEMBRANE FILTRATION AND GUIZOTIA ABYSSINICA CULTURE MEDIA FOR THE DEMONSTRATION OF CRYPTOCOCCUS NEOFORMANS (BROWN COLOR EFFECT)].

2. [ON A CULTURE MEDIUM CONTAINING QUINIC ACID FOR THE DIFFERENTIATION AND ENRICHMENT OF PSEUDOMONAS AERUGINOSA].

3. [2,3-dihydroxybenzoic acid and its amino acid derivatives in the culture medium of Klebsiella oxytoca].

4. A survey to determine the occurrence of Histoplasma capsulatum and Cryptococcus neoformans in air-conditioners.

5. [The biological "activation" of Endoxan].

6. Medium for selective isolation of Cryptococcus neoformans.

7. The production of an N-acylanthranilic acid from shikimic acid and the effect on iron deficiency on the biosynthesis of other aromatic compounds by Aerobacter aerogenes.

8. Modified Littman oxgall agar to isolate Cryptococcus neoformans.

1. Recovery of Cryptococcus neoformans from modified Dubos liquid medium utilized for isolation of mycobacteria.

Review 2. Pathogenic roles for fungal melanins.

3. Pigment production by Cryptococcus neoformans from para- and ortho-Diphenols: effect of the nitrogen source.

4. Regulation of melanin production by Cryptococcus neoformans.

5. Two rapid pigmentation tests for identification of Cryptococcus neoformans.

6. Antioxidant function of melanin in black fungi.

7. Rapid presumptive identification of Cryptococcus neoformans.

8. Pigment production by Cryptococcus neoformans and other Cryptococcus species from aminophenols and diaminobenzenes.

9. Six-hour pigmentation test for the identification of Cryptococcus neoformans.

10. Production of diagnostic pigment by phenoloxidase activity of cryptococcus neoformans.