Melanin-like pigment produced in vitro and in vivo by Malassezia yeasts has not been described before. Masson-Fontana staining confirmed accumulation of black pigment on the cell walls of L-dihydroxyphenylalaline (L-DOPA)-cultured Malassezia species. Black pigment was also observed in cells and hyphae from hyperpigmented patient lesions with culture-confirmed pityriasis versicolor and seborrheic dermatitis.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1233999 | PMC |
| http://dx.doi.org/10.1128/JCM.43.8.4147-4151.2005 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Malassezia polysorbatinonusus sp. nov., a Novel Isolate from a Japanese Patient with Seborrheic Dermatitis.
Mycopathologia
January 2025
Teikyo University Institute of Medical Mycology (TIMM), 359 Otsuka, Hachioji, Tokyo, 192-0395, Japan.
We describe a novel Malassezia species named Malassezia polysorbatinonusus, isolated from a Japanese patient with seborrheic dermatitis. The internal transcribed spacer (ITS) region of the isolate (LSEM 4845) were only 94.7% identical to those of M.
View Article and Find Full Text PDFAnti-furfurative comparison of Kesh Kanti-Herbal Shampoos and synthetic shampoos against Malassezia furfur for dandruff management.
AMB Express
January 2025
Drug Discovery and Development Division, Patanjali Research Foundation, NH-58, Near Bahadrabad, Haridwar, 249405, Uttarakhand, India.
Malassezia furfur is the primary etiological agent of dandruff (Pityriasis capitis). Although herbal shampoos are preferred for their natural, mild ingredients over synthetic counterparts, they are often perceived as less effective in managing flaky scalp conditions or furfuration causing dandruff. The study compares the antifungal efficacy of herbal and synthetic shampoos against M.
View Article and Find Full Text PDFLife stage impact on the human skin ecosystem: lipids and the microbial community.
NPJ Biofilms Microbiomes
January 2025
A*STAR Skin Research Labs (A*SRL), Agency for Science, Technology, and Research (A*STAR) & Skin Research Institute of Singapore (SRIS), Singapore, Republic of Singapore.
Sebaceous free fatty acids are metabolized by multiple skin microbes into bioactive lipid mediators termed oxylipins. This study investigated correlations between skin oxylipins and microbes on the superficial skin of pre-pubescent children (N = 36) and adults (N = 100), including pre- (N = 25) and post-menopausal females (N = 25). Lipidomics and metagenomics revealed that Malassezia restricta positively correlated with the oxylipin 9,10-DiHOME on adult skin and negatively correlated with its precursor, 9,10-EpOME, on pre-pubescent skin.
View Article and Find Full Text PDFLactams Exhibit Potent Antifungal Activity Against Monospecies and Multispecies Interkingdom Biofilms on a Novel Hydrogel Skin Model.
APMIS
January 2025
Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, Glasgow, UK.
Infections of intact and damaged skin barriers and keratin are frequently associated with complex biofilm communities containing bacteria and fungi, yet there are limited options for successful management. This study intended to focus on the utility of some novel proprietary lactam molecules, quorum sensing (QS)-derived halogenated furanones, which act to block the QS pathway, against key fungal pathogens of the skin (Candida albicans, Malassezia furfur and Microsporum gypseum). Moreover, we aimed to assess how these actives performed against complex interkingdom biofilms in a clinically relevant model.
View Article and Find Full Text PDFDiverse Colonisation and Disease Associations of the Human Commensal Malassezia: Our Body's Secret Tenant.
Mycoses
January 2025
Cell Biology and Molecular Genetics, Yenepoya Research Centre, Yenepoya (Deemed to Be University), Mangalore, India.
A niche in the context of microorganisms defines the specific ecological role or habitat inhabited by microbial species within an ecosystem. For the human commensal Malassezia, the skin surface is considered its primary niche, where it adapts to the skin environment by utilising lipids as its main carbon and energy source. However pathogenic characteristics of Malassezia include the production of allergens, immune modulation and excessive lipid utilisation, which result in several diseases such as pityriasis versicolor, seborrheic dermatitis, Malassezia folliculitis and atopic dermatitis.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!