| characterization of malassezia species by means of phenotypic characteristics and detection of electrophoretic karyotypes by pulsed-field gel electrophoresis (pfge). | a total of 220 isolates of the genus malassezia obtained from affected skin of animals and humans were included in this study. the isolates were examined for their belonging to the known species malassezia pachydermatis, malassezia sympodialis, malassezia furfur, malassezia obtusa, malassezia restricta, malassezia globosa and malassezia slooffiae by means of phenotypic and biochemical characteristics as well as their ability to assimilate polyethylen(20)-sorbitan-esters (tween 20, 40, 60, 80). t ... | 1999 | 10536433 |
| [taxonomy of malassezia furfur: state of the art]. | malassezia furfur is a lipophilic yeast considered as a normal component of the human skin flora. apart from pityriasis versicolor, m. furfur has been linked to several skin diseases such as seborrheic dermatitis, folliculitis or atopic dermatitis. moreover, these yeasts have been reported as agent of invasive human diseases including pneumonia, catheter-associated sepsis and peritonitis. the existence of morphological, serological, metabolical, biochemical and karyotipical differences has been ... | 1997 | 15538815 |
| malassezia and candida colonisation on glans penis of circumcised men. | the malassezia yeast are members of the normal human cutaneous flora in adults. they also are reported as part of the microflora of the male genital region in mostly uncircumcised males. it has been reported that malassezia sympodialis and malassezia globosa are the most frequent yeast belonging to the resident microflora of the penis as in other human skin areas. the aim was to evaluate the prevalence of malassezia and candida yeast colonisation on the glans penis of circumcised males. impressi ... | 2005 | 16115108 |
| [identification of malassezia species in patients with pityriasis versicolor in goiânia-go]. | the objectives of this study were to investigate the frequency of pityriasis versicolor occurrence and to identify yeasts of the genus malassezia in patients at the mycology laboratory of the federal university of goiás, in goiânia, state of goiás. ninety-five cases of pityriasis versicolor were diagnosed, and four species of malassezia were identified: malassezia furfur, malassezia sympodialis, malassezia globosa and malassezia obtusa. | 2006 | 17308710 |
| [concordance between phenotypical features and pcr-rea for the identification of malassezia spp]. | the genus malassezia has been recently revised and nowadays includes 11 species that cannot always be differentiated from each other by physiological and morphological tests. this study was aimed to evaluate the correlation between a molecular method and conventional phenotypic features in the identification of malassezia spp. to achieve this aim, 92 argentinean clinical strains isolated between 2001 and 2005 were analyzed along with three reference strains (malassezia furfur cbs 7019, malassezi ... | 2007 | 18095760 |
| in vitro modulation of human keratinocyte pro- and anti-inflammatory cytokine production by the capsule of malassezia species. | malassezia spp. are commensal, cutaneous fungi that are implicated in seborrhoeic dermatitis. we hypothesize that the lipid-rich capsule of malassezia spp. masks the organism from host detection, and depletion of this layer elicits an inflammatory response. to test this, preparations of capsulated or acapsular [10% (v/v) triton x-100 treated], viable and nonviable, exponential or stationary phase malassezia furfur, malassezia globosa, malassezia obtusa, malassezia restricta, malassezia slooffiae ... | 2008 | 18752620 |
| antimicrobial activity of hymenaea martiana towards dermatophytes and cryptococcus neoformans. | the biological activity of crude extract and fractions of hymenaea martiana was evaluated against a panel of human pathogenic fungi. the crude extracts and hydroalcoholic fractions (e) showed a high activity against cryptococcus neoformans species complex isolates with mics between 2 and 64 μg ml(-1). the methanolic (c) and butanolic (d) fractions were the most active against trichopyton rubrum, trichopyton mentagrophytes and microsporum canis with mics between 8 and 256 μg ml(-1). none of the e ... | 2010 | 19563478 |
| prevalencia de especies de malassezia en pacientes con pitiriasis versicolor en rosario, argentina. | malassezia species are considered opportunistic yeasts of increasing clinical importance. these lipophilic yeasts are associated with various human diseases, especially pityriasis versicolor (pv), a chronic superficial scaling dermatomycosis. the aim of this study was to isolate, identify and analyze the distribution of the different species of malassezia in patients with pv in rosario city (argentina). a total of 264 clinical samples were studied. isolates were identified on the basis of micros ... | 2011 | 21419859 |
| extracellular phospholipase activity of malassezia spp. isolated from individuals with and without dermatological disease. | background: the malassezia genus includes mainly lipophilic yeasts belonging to the cutaneous microbiota of man and other mammals. some malassezia species have been associated with various dermatological diseases. the factors permitting the transformation of yeasts of the malassezia genus from a commensal organism to a pathogenic agent are still little known but the production of various enzymes such as lipase, phospholipase and lipoxygenase could contribute to the pathogenic activity of these y ... | 2011 | 21645629 |
| identification of malassezia yeast species isolated from patients with pityriasis versicolor. | pityriasis versicolor (pv) is a disease with worldwide distribution. twelve different species of malassezia yeast have been described. the objective of this study was to determine which species of malassezia are more prevalent in patients with pityriasis versicolor. samples were collected by scraping the lesions of 87 patients with a clinical suspicion of pityriasis versicolor. the samples were then submitted to fungal microscopy and culture to identify the species. the species found were: malas ... | 2011 | 21987156 |
| malassezia species in healthy skin and in dermatological conditions. | the genus malassezia comprises lipophilic species, the natural habitat of which is the skin of humans and other warm-blooded animals. however, these species have been associated with a diversity of dermatological disorders and even systemic infections. pityriasis versicolor is the only cutaneous disease etiologically connected to malassezia yeasts. in the other dermatoses, such as malassezia folliculitis, seborrheic dermatitis, atopic dermatitis, and psoriasis, these yeasts have been suggested t ... | 2016 | 26710919 |
| distribution of malassezia species in patients with pityriasis versicolor in turkey. | pityriasis versicolor is a common superficial mycotic disease of the skin which is caused by different species of malassezia genus. the aim of this study was to contribute to the knowledge of the aetiology of pityriasis versicolor (pv) with a mycological study made according to the new species and additionally, the success of the different sampling techniques, duration and recurrence history of the disease, distribution of infecting strains according to the affected body sites were also investig ... | 2014 | 24746716 |