The range of molecular methods for typing Malassezia

Gaitanis, George; Bassukas, Ioannis D.; Velegraki, Aristea

doi:10.1097/qco.0b013e328324ed19

Cited by 36 publications

(16 citation statements)

References 44 publications

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“…M. dermatis has been isolated in East Asia (Japan and South Korea), while M. obtusa has been isolated mostly in Sweden, Canada, Bosnia, and Herzegovina but has also been reported in Iran and Indonesia. Identification and typing of the latter isolates with molecular techniques might reveal the existence of atypical M. obtusa-M. furfur subtypes, as these two species are phylogenetically close, and M. furfur shows considerable diversity (106,315).…”

Section: Culture-based Epidemiologymentioning

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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Section: Culture-based Epidemiologymentioning

confidence: 99%

The Malassezia Genus in Skin and Systemic Diseases

et al. 2012

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“…The species has been also detected from dogs, horses, cows, bats, and even from a hospital floor [20,21,[40][41][42]. M. furfur has been described as showing high genotypic variability, and these specific genotypes could be related to geographic origin of the isolates, skin disease origin, age groups, body sites from which they come, or the host (human or animal associated subtypes) [43][44][45][46]. In Lithuania, cutaneous colonization with Malassezia species is very low as compared with studies from other countries [9,[47][48][49].…”

Section: Discussionmentioning

confidence: 99%

Atypical non-lipid-dependent strains of Malassezia furfur

Zinkevičienė¹,

Norkunas

Čitavičius

2012

Open Life Sciences

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AbstractMembers of the yeast genus Malassezia, including atypical strains, are lipophilic except for Malassezia pachydermatis. New physiological features that characterize atypical Malassezia strains are mainly associated with alteration in Tween assimilation pattern — such isolates still require lipids for growth. We isolated three non-lipid-dependent strains of Malassezia from patients with diagnosed atopic dermatitis (AD). These isolates could not be identified to the species level via their physiological properties. Phylogenetic trees, based on the D1/D2 regions of the 26S rDNA gene sequences and nucleotide sequences of the ITS1-5.8S-ITS2 rRNA region, showed the isolates to belong to Malassezia furfur. Three non-lipid dependent isolates from AD skin were conspecific, and sequences analysis proved them to be M. furfur.

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“…414 The macules and patches are yellowish-brown, pale yellow, or dark brown, sometimes reddish or pinkish, appearing hypopigmented or hyperpigmented. 416 also cause onychomycosis, visceral infection, and summer-type hypersensitivity pneumonitis. 416 also cause onychomycosis, visceral infection, and summer-type hypersensitivity pneumonitis.…”

Section: Pityriasis Versicolormentioning

confidence: 99%