Pityriasis versicolor: socioeconomic and clinico‐mycologic study in India

Dutta, Sidhartha; Bajaj, Anubha; Basu, Suman; Dikshit, Anupam

doi:10.1046/j.1365-4362.2002.01645.x

Cited by 49 publications

(55 citation statements)

References 7 publications

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“…women, 7,10 while others indicated that the incidence of these infections is higher in women, 20 which may be due to extra attention of women to beauty and the more frequent visits to their dermatologist in comparison to men. However, like many reports, 11,19 this study has found no differences in the development of PV between both sexes. (The P-values <0.05 were required to consider statistically significant difference.)…”

Section: Discussionsupporting

confidence: 80%

“…13 In our study, the recovery rate of Malassezia species was 91% (200 samples), which showed good concordance with a recent study carried out by Nakabashi et al, 32 and higher than some previous studies. 19,40 The difference may be due to the fact that the centre of the PV lesions yields more viable material for culture 8,9,11 and avoid the isolation of surrounding commensal species. 38,44 In the patients studied, the most frequently isolated species in PV lesions were M. sympodialis (51%) and M. globosa (40%), followed by M. furfur (7%), M. obtusa (1%), and M. slooffiae (1%).…”

Section: Discussionmentioning

confidence: 99%

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Prevalence of Malassezia species in patients with pityriasis versicolor in Rosario, Argentina

Ramadán

Sortino

Bulacio

et al. 2012

Revista Iberoamericana de Micología

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a b s t r a c tBackground: 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. Aims: 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). Methods: A total of 264 clinical samples were studied. Isolates were identified on the basis of microscopic observation of cells, and physiological properties, such as the presence of catalase, ability to use Tween compounds, splitting of esculin, and morphology, color and precipitate production on chromogenic agar CHROMagar-Malassezia medium (CHROMM). Results: The highest prevalence of PV in this study was observed in the 25-to 45-year-old group. No differences were found in the development of PV between sexes. The most affected areas of body were the trunk and face. Malassezia sympodialis (51%) was the most commonly isolated species, followed in frequency by M. globosa (40%), Malassezia furfur (7%), Malassezia obtusa (1%) and Malassezia slooffiae (1%). Conclusions: The success for a correct identification of these yeasts is important to improve our knowledge about their epidemiological role in PV and also to detect the appearance of strains which are resistant to the commonly used antifungal drugs.

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Section: Discussionsupporting

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Prevalence of Malassezia species in patients with pityriasis versicolor in Rosario, Argentina

Ramadán

Sortino

Bulacio

et al. 2012

Revista Iberoamericana de Micología

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“…Szepietowski et al [21] reported that 5.2% of patients with PV were children, aged 15 years or younger. Also other surveys reported that 1.1 Á/3.7% of patients with PV were children between the ages of 0 Á/10 years [22,23]. Taking into account the pediatric colonization revealed in our study, PV of the penis reported to be very rare even in adolescence, should be now considered among pediatric superficial fungal infections [24 Á/27].…”

Section: Discussionsupporting

confidence: 61%

Effect of circumcision on genital colonization ofMalasseziaspp. in a pediatric population

et al. 2006

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This study aimed to determine the prevalence of yeast fungi in samples from the glans penis and prepuce of circumcised and uncircumcised children. Impression preparations were made on modified Dixon and Leeming-Notman agar without cycloheximide. The isolates were identified by morphological and physiological characteristics. The yeasts were detected in 32 (28.6%) of 112 children, 12 (18.2%) being among 66 circumcised and 20 (43.5%) among 46 uncircumcised children. The most common species was Malassezia globosa (40.6%) followed by, Malassezia furfur (31.3%), Malassezia slooffiae (15.6%), Candida albicans (6.3%), Candida tropicalis (3.1%) and Candida parapsilosis (3.1%). The colonization with yeasts, and especially lipophilic species was more frequently observed among uncircumcised versus circumcised children. While age was not found to be a factor (P > 0.05), circumcision was responsible for increasing the colonization rate by 4.8 times (95% CI: 1.6-14.5) (P < 0.01). The circumcision status was not found to effect the distribution of Malassezia spp.

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“…More than 20 studies (Tables 3 to 6) have been carried out worldwide on the epidemiology of Malassezia species in cases of pityriasis versicolor, seborrheic dermatitis, atopic eczema, and psoriasis and on healthy control skin of the same individuals or skin from healthy volunteers (53,63,89,112,122,146,171,173,180,185,228,237,255,259,275,286,344,353). Results are not directly comparable between studies, as different methodologies, isolation media, and identification procedures have been employed.…”

Section: Culture-based Epidemiologymentioning

confidence: 99%

“…The prevalence of the disease falls drastically in more temperate climates, as it was diagnosed in only 2.1% of young healthy males (mean age, 22 years) in Italy (156), with even lower rates in Sweden (0.5% of males and 0.3% of females) (147). The peak agespecific prevalence of pityriasis versicolor is among young adults 20 to 40 years old (189); however, in tropical/subtropical regions, such as India, the highest disease prevalence has been recorded for somewhat younger individuals, between 10 and 30 years old (89). Pityriasis versicolor is not an infectious disease, and hereditable factors decisively contribute to its appearance.…”

Section: Pityriasis Versicolormentioning

confidence: 99%

The Malassezia Genus in Skin and Systemic Diseases

et al. 2012

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SUMMARY In the last 15 years, the genus Malassezia has been a topic of intense basic research on taxonomy, physiology, biochemistry, ecology, immunology, and metabolomics. Currently, the genus encompasses 14 species. The 1996 revision of the genus resulted in seven accepted taxa: M. furfur , M. pachydermatis , M. sympodialis , M. globosa , M. obtusa , M. restricta , and M. slooffiae. In the last decade, seven new taxa isolated from healthy and lesional human and animal skin have been accepted: M. dermatis , M. japonica , M. yamatoensis , M. nana , M. caprae , M. equina , and M. cuniculi. However, forthcoming multidisciplinary research is expected to show the etiopathological relationships between these new species and skin diseases. Hitherto, basic and clinical research has established etiological links between Malassezia yeasts, pityriasis versicolor, and sepsis of neonates and immunocompromised individuals. Their role in aggravating seborrheic dermatitis, dandruff, folliculitis, and onychomycosis, though often supported by histopathological evidence and favorable antifungal therapeutic outcomes, remains under investigation. A close association between skin and Malassezia IgE binding allergens in atopic eczema has been shown, while laboratory data support a role in psoriasis exacerbations. Finally, metabolomic research resulted in the proposal of a hypothesis on the contribution of Malassezia -synthesized aryl hydrocarbon receptor (AhR) ligands to basal cell carcinoma through UV radiation-induced carcinogenesis.

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Pityriasis versicolor: socioeconomic and clinico‐mycologic study in India

Cited by 49 publications

References 7 publications

Prevalence of Malassezia species in patients with pityriasis versicolor in Rosario, Argentina

Prevalence of Malassezia species in patients with pityriasis versicolor in Rosario, Argentina

Effect of circumcision on genital colonization ofMalasseziaspp. in a pediatric population

The Malassezia Genus in Skin and Systemic Diseases

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