Biomaterial Database

Dimorphism of Pityrosporum orbiculare in a defined culture medium. 1977

M Dorn, and K Roehnert

Dimorphism of Pityrosporum orbiculare was induced in an artificial culture medium which consisted of 0.05 M glycine in 0.03-0.06 M ammonium phosphate buffer (pH 5.6), salts, glucose, and Tween-80. Of the strains tested, 78 to 85% produced hyphal elements from up to 8.5% of yeast cells. Morphologic features of P. orbiculare in culture were examined by scanning electron microscopy and compared with the appearance of fungus from clinical lesions of tinea versicolor. Morphologically, the fungi obtained in vivo and in vitro were identical.

UI	MeSH Term	Description	Entries
D008290	Malassezia	A mitosporic fungal genus that causes a variety of skin disorders. Malassezia furfur (Pityrosporum orbiculare) causes TINEA VERSICOLOR.	Pityrosporum,Pityrosporum ovale,Saccharomyces ovalis,Malassezia furfur,Pityrosporum orbiculare
D008855	Microscopy, Electron, Scanning	Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.	Scanning Electron Microscopy,Electron Scanning Microscopy,Electron Microscopies, Scanning,Electron Microscopy, Scanning,Electron Scanning Microscopies,Microscopies, Electron Scanning,Microscopies, Scanning Electron,Microscopy, Electron Scanning,Microscopy, Scanning Electron,Scanning Electron Microscopies,Scanning Microscopies, Electron,Scanning Microscopy, Electron
D011110	Polymorphism, Genetic	The regular and simultaneous occurrence in a single interbreeding population of two or more discontinuous genotypes. The concept includes differences in genotypes ranging in size from a single nucleotide site (POLYMORPHISM, SINGLE NUCLEOTIDE) to large nucleotide sequences visible at a chromosomal level.	Gene Polymorphism,Genetic Polymorphism,Polymorphism (Genetics),Genetic Polymorphisms,Gene Polymorphisms,Polymorphism, Gene,Polymorphisms (Genetics),Polymorphisms, Gene,Polymorphisms, Genetic
D003470	Culture Media	Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN.	Media, Culture
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014010	Tinea Versicolor	A common chronic, noninflammatory and usually symptomless disorder, characterized by the occurrence of multiple macular patches of all sizes and shapes, and varying in pigmentation from fawn-colored to brown. It is seen most frequently in hot, humid, tropical regions and is mostly caused by MALASSEZIA FURFUR (formerly Pityrosporum orbiculare).	Malassezia furfur Infection,Pityriasis Folliculitis,Pityriasis Versicolor,Pityrosporum orbiculare Infection,Folliculitides, Pityriasis,Folliculitis, Pityriasis,Infection, Malassezia furfur,Infection, Pityrosporum orbiculare,Malassezia furfur Infections,Pityriasis Folliculitides,Pityrosporum orbiculare Infections