Reclassificação taxonômica de espécies do gênero Malassezia: revisão da literatura sobre as implicações clinicolaboratoriais

Schlottfeldt, Fabio dos Santos; Tramontin, Sayonara Werner; Nappi, Berenice Pagani; Santos, Jairo Ivo dos

doi:10.1590/s1676-24442002000300006

Cited by 2 publications

(1 citation statement)

References 23 publications

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“…Esta micosis superficial tiene, en muchos casos, carácter recidivante. Presenta una amplia distribución mundial, siendo significativamente más frecuente en los climas tropicales y subtropicales [1][2][3] . Las lesiones pueden ser hipopigmentadas o hiperpigmentadas, variando el color desde el blanco, rosa, bronce hasta el marrón.…”

Section: Introductionunclassified

Especies de Malassezia causantes de pitiriasis versicolor en Paraguay

Fariña-González

Acosta

Samudio

et al. 2019

Rev. chil. infectol.

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Background: Pityriasis versicolor is a frequent pathology in Paraguay; however, its epidemiology is unknown. Aim: To determine the frequency of Malassezia species causing pityriasis versicolor and the epidemiological characteristics of the population. Methods: Samples from patients with a presumptive diagnosis of pityriasis versicolor were collected. Laboratory diagnosis was carried out by fresh examination and culture in modified Dixon agar and chromogenic Chromagar Malassezia ® , incubated at 32° C, and identification by macro and micromorphological features, biochemical and physiological tests. Results: 102 patients were included (51% female) from 1 month to 63 years of age, the predominant age group was 11-20 years (35.3%). The most frequent location was on the back (60.8%). Hipocromic clinical forms (48%) predominated. The most frequent species was M. globosa (52.9%), followed by M. furfur (24.5%), M. sympodialis (18.6%) and M. slooffiae (6.9%). Conclusions: The observed epidemiology is similar to other South American studies, with no sex distinction, predominantly hypochromic clinical form and as primary responsible species appears M. globosa. This is the first report on species causing pityriasis versicolor in Paraguay and the characteristics of the affected population.

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Section: Introductionunclassified

Especies de Malassezia causantes de pitiriasis versicolor en Paraguay

Fariña-González

Acosta

Samudio

et al. 2019

Rev. chil. infectol.

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Molecular heterogeneity of Malassezia pachydermatis through RAPD-PCR

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Coimbra

Meinerz

et al. 2010

Acta Sci. Biol. Sci.

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Several methodologies in molecular biology have been used in the investigation of Malassezia pachydermatis and its differentiation into subtypes. Recent molecular research of this species includes the use of samples isolated from canine otitis externa and dermatitis, as well as from healthy animals, having in view an epidemiological study of the yeast. The aim of this study was to identify molecular differences in M. pachydermatis samples isolated from dogs with otitis externa. The M. pachydermatis strains were analyzed by means of the Random Amplification Primer DNA-Polimerase Chain Reaction (RAPD-PCR) for molecular heterogeneity research. DNA extraction was carried out with phenol-chloroform and the RAPD technique using the AGAATCCGCC primer. A variation was observed in the number and arrangement of the bands among the 49 studied isolates, grouped into nine patterns. Isolate groupings were not found to be related to animal breed, age or sex. It was concluded that M. pachydermatis has differences in its molecular profile, as shown by the molecular technique (RAPD-PCR), which allows isolates to be classified into nine subtypes.

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Reclassificação taxonômica de espécies do gênero Malassezia: revisão da literatura sobre as implicações clinicolaboratoriais

Cited by 2 publications

References 23 publications

Especies de Malassezia causantes de pitiriasis versicolor en Paraguay

Especies de Malassezia causantes de pitiriasis versicolor en Paraguay

Molecular heterogeneity of Malassezia pachydermatis through RAPD-PCR

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