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 established metabolites of Aspergillus versicolor include numerous xanthones and anthraquinones, and a substituted imide1}. Recently Dhar and Bose2) reported the isolation of a new antifungal antibiotic, named versicolin, from the culture nitrate of a strain of A. versicolor. Low yielding cultures of A. versicolor could be regenerated by mutagenic treatment3*. Versicolin was notable because...

Fungal strains isolated from poultry farm soil by Waksman serial dilution method were screened for alkaline protease production. Isolate PF/F/107, the most potent producer of alkaline protease was identified as Aspergillus versicolor. The isolate PF/F/107 showed highest activity in the optimized medium I at pH 9.0, temperature 35oC, with 1% wheat bran and 1% sodium nitrate incubated for 4 days.

43 How to cite this article: Acharya R, Gyawalee M. Uncommon presentation of Pityriasis versicolor; hyper and hypopigmentation in a same patient with variable treatment response. Our Dermatol Online. 2017;8(1):43-45. Submission: 20.02.2016; Acceptance: 06.06.2016 DOI:10.7241/ourd.20171.11 Uncommon presentation of Pityriasis versicolor; hyper and hypopigmentation in a same patient with variable ...

We experienced an atypical case of pityriasis versicolor with a unique clinical appearance and undescribed mycological features. Although Malassezia sp. was cultured from the keratotic material, the fungal elements observed in the material were not readily identified as Malassezia. The diagnosis was established with the aid of immunohistochemical and ultrastructural studies with the aetiologica...

In an area representative of a moderate climate zone (Lubuskie Province in Poland), mycological tests in over 270 flats demonstrated the occurrence of 82 species of moulds. Aspergillus versicolor Tiraboschi was often encountered on building partitions (frequency 4: frequently). The ability to synthesize the carcinogenic sterigmatocystin (ST) means that it poses a risk to humans and animals. Bio...

Three species of medicinal mushrooms are commercially available in Taiwan, namely, Ganoderma lucidum (Ling-chih), Ganoderma tsugae (Sung-shan-ling-chih), and Coriolus versicolor (Yun-chih). Methanolic extracts were prepared from these medicinal mushrooms and their antioxidant properties studied. At 0.6 mg/mL, G. lucidum, G. lucidum antler, and G. tsugae showed an excellent antioxidant activity ...

BACKGROUND Pityriasis versicolor is a superficial infection of the stratum corneum which caused by a group of yeasts formerly named pityrosporium. The taxonomy of these lipophilic yeasts has recently been modified and includes seven species referred as Malassezia. The aim of this study is to compare the distribution of Malassezia species isolated from pityriasis versicolor lesions and those iso...

The protein-bound polysaccharides or polysaccharopeptides produced by Coriolus versicolor are effective immunopotentiators, which are used to supplement the chemotherapy and radiotherapy of cancers and various infectious diseases. Antitumor activity of polysaccharopeptides has been documented. Several kinds of protein-bound polysaccharides have been shown to be produced by the white rot fungus,...