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...

materials and methods in total, among 134 patients clinically suspected of having pityriasis versicolor, attending the department of mycology, boali sina hospital and referral laboratory of the mazandaran university of medical sciences, 116/134 (86.5%) positive patients for malassezia elements, namely, yeast cells and short hyphae in microscopic examination, were included in the study. all 116 ...

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%).

background malassezia species as skin microflora of humans and other warm-blooded vertebrates are the lipophilic yeasts associated with various human diseases, especially pityriasis versicolor (pv). objectives the objective of this study was to identify the malassezia species of scraped skin of pv patients in yazd, iran, using morphological, biochemical and physiological methods. we also compar...

BACKGROUND Skin pigmentary changes of pityriasis versicolor may occur as either hyperpigmented or hypopigmented lesions, depending on the outcome of interactions between Malassezia yeasts and the skin, such as lipoperoxidation process, stimulus of inflammatory cell to melanocytes, and increased thickness of keratin layer. OBJECTIVE To investigate skin characteristic factors that enhance the s...

The implication of the yeast genus Malassezia in skin diseases has been characterized by controversy, since the first description of the fungal nature of pityriasis versicolor in 1846 by Eichstedt. This is underscored by the existence of Malassezia yeasts as commensal but also by their implication in diseases with distinct absence of inflammation despite the heavy fungal load (pityriasis versic...

A wide variety of bacteria and fungi are found on the human skin. Although some skin microorganisms produce antibacterial peptides that inhibit invasion by pathogens or promote the integrity of cutaneous defenses by eliciting host immune responses, the normal microbiome can also cause several skin diseases. Atopic dermatitis (AD) is a chronic disease that causes pruritus and involves cycles of ...

Background: Malassezia spp. is an opportunistic dimorphicBasidiomycetous fungi associated with a variety of diseasesincluding dandruff, atopic eczema, pityriasis versicolor, seborrheicdermatitis and folliculitis. It also causes systemic infectionsin immune compromised patients. The aim of this study wasto evaluate the antimicrobial activity of nettle leaves (Urticadioica), colocynths fruits (Ci...