Tinea nigra: relato de 11 casos diagnosticados em João Pessoa - Paraíba - Brasil

Lima, E.O.; Pontes, Zélia B. V. S.; Oliveira, N.; Carvalho, Maria Fátima P.; Guerra, Maria Fátima L.

doi:10.5216/rpt.v30i2.15145

Cited by 1 publication

(1 citation statement)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This mycosis was originally observed in 1891 [1] and has since being reported from several places in South America [2][3][4][5][6][7][8] and other countries [9,10], including cases from infants [7,11]. The clinical presentation is generally a single hyperchromic macule, not symptomatic, in palms and soles, but there is a report of isolation of H. werneckii from blood and splenic abscess [12].…”

Section: Introductionmentioning

confidence: 96%

Enzymatic Activity and Susceptibility to Antifungal Agents of Brazilian Environmental Isolates of Hortaea werneckii

et al. 2015

View full text Add to dashboard Cite

Four strains of Hortaea werneckii were isolated from different substrates in Brazil (a salt marsh macrophyte, a bromeliad and a marine zoanthid) and had their identification confirmed by sequencing of the 26S rDNA D1/D2 domain or ITS region. Most of the strains were able to express amylase, lipase, esterase, pectinase and/or cellulase, enzymes that recognize components of plant cells as substrates, but did not express albuminase, keratinase, phospholipase and DNAse, whose substrates are animal-related. Urease production was positive for all isolates, while caseinase, gelatinase and laccase production were variable among the strains. All the strains grew in media containing up to 30% NaCl. We propose that the primary substrate associated with H. werneckii is plant-related, in special in saline environments, where the fungus may live as a saprophyte and decomposer. Infection of animal-associated substrates would be secondary, with the fungus acting as an opportunistic animal pathogen. All strains were resistant to fluconazole and presented high MIC for amphotericin B, while they were susceptible to all the other antifungal agents tested.

show abstract