BACKGROUND Malassezia species play an important role in the pathogenesis of seborrheic dermatitis. In particular, M. restricta and M. globosa are considered to be the predominant organisms in seborrheic dermatitis of Western countries. However, species distribution of Malassezia in seborrheic dermatitis has not been clearly determined yet in Asia. OBJECTIVE To identify the distribution of Mal...

 Abstract Background: Psoriasis is a chronic proliferative condition of the skin. Its accurate pathogenesis has not been known yet, but interactions between genes and environmental factors have been implicated in its initiation. The role of malassezia in psoriasis is still undetermined, but several reports have associated these lipophilic yeasts with the development of skin lesions in psoriasis...

background and objective: seborrheic dermatitis (sd) is a frequent disorder of the skin that is distinguished by the development of erythematous patches and yellow-gray scales. it is a multifactor disease that requires predisposing factors for its progress. presence of these factors leads to reproduction of opportunistic yeast malassezia spp.the aim of the present study was to isolate and ident...

Malassezia (Pityrosporum) species are lipophilic yeasts that are recognized as commensals of the skin of warm-blooded vertebrates. Aryl-hydrocarbon receptor (AhR) ligands produced by Malassezia species have been implicated in carcinogenesis, suggesting that this yeast may contribute to the development of skin cancer, particularly basal cell carcinoma (BCC). This hypothesis suggests that skin ca...

Healthy human skin is regularly colonized by nonpathogenic microorganisms. Bacterial genera isolated are coagulase-negative staphylococci and diphtheroid rods on the skin surface and propionibacteria in the infundibulum of the sebaceous glands. As for fungi, Pityrosporum (Malassezia spp.) is regularly present. The distribution and density of the flora is dependent on age and environmental facto...

Reference methods for antifungal susceptibility testing of yeasts have been developed by the Clinical and Laboratory Standards Institute (CLSI) and the European Committee on Antibiotic Susceptibility Testing (EUCAST). These methods are intended to test the main pathogenic yeasts that cause invasive infections, namely Candida spp. and Cryptococcusneoformans, while testing other yeast species int...

A total of 134 clinical samples such as hair plucks and skin scrapings were collected from dogs with cutaneous lesions of alopecia, hyperpigmentation, and scales. A part of clinical material was directly examined under microscope after digestion with 10% potassium hydroxide. The remaining material was cultured in Sabouraud‘s Dextrose agar to study the presence of fungi based on the colony morph...

Dandruff caused by Malassezia spp is controlled by antifungal agents. In the present study four medicinal plantsTerminalia bellerica, Terminalia chebula, Emblica officinalis and Lantana camarawere selected to check their antifungal activity. Their efficacy was tested using different concentrations of extracts in various solvents. The antifungal activity of the plant extracts was determined by w...

Most of the fungal species that infect humans can grow in more than one morphological form but only a subset of pathogens produce filamentous hyphae during the infection process. This subset is phylogenetically unrelated and includes the commonly carried yeasts, Candida albicans, C. dubliniensis, and Malassezia spp., and the acquired pathogens, Aspergillus fumigatus and dermatophytes such as Tr...

An evaluation was made of the phospholipase activities of Malassezia pachydermatis strains isolated from healthy dogs versus those from dogs with dermatitis and otitis. A high percentage of strains of M. pachydermatis obtained from lesion sites (93.9%) produced phospholipase, compared to the strains obtained from healthy skin of the same dog with localized lesions (41.4%) and healthy dogs (10.6%).