Pdf tinea nigra is a superficial mycosis caused by hortaea werneckii. If you do not see its contents the file may be temporarily unavailable at the journal website or you do not have a pdf plugin installed and enabled in your browser. Hortaea werneckii phaeoannellomyces werneckii, exophiala werneckii. Hortaea werneckii an overview sciencedirect topics. Exophiala is a genus of anamorphic fungi in the family herpotrichiellaceae. Hortaea werneckii is a species of yeast in the family teratosphaeriaceae.
It is a black yeast that is investigated for its remarkable halotolerance. Tinea nigra is a superficial form of phaeohyphomycosis caused by phaeoannellomyces werneckii also called hortaea werneckii and exophiala werneckii. This genus is a yeast that lacks a known sexual state and thus belongs to the fungi imperfecti. The ability of fungi to invade plant and animal tissue was observed in early 19th century but the first documented animal infection by any fungus was made by bassi, who in 1835 studied the muscardine disease of silkworm and. Hortaea werneckii is the etiologic agent of tinea nigra, a superficial cutaneous. To emphasize this unusually wide adaptability, and to distinguish h. Later, it was renamed exophiala werneckii, phaeoannellomyces. Exophiala has been implicated in causing saxophone lung or hypersensitivity pneumonitis, a disease that can be contracted by woodwind instrumentalists saxophonists, clarinettists, oboists etc. Pdf tinea nigra by hortaea werneckii, a report of 22 cases from. Bilateral tinea nigra plantaris with good response to isoconazole. Tinea nigra is an uncommon superficial fungal infection of horny layer.
Exophiala werneckii horta arx, the genera of fungi sporulating in pure culture. Cladosporium werneckii horta is transferred to phaeoannellomyces as p. We evaluate retrospectively twentytwo confirmed cases of tinea nigra from a total of eleven yr. The infection is confined to the stratum corneum of the palms or soles and occurs mainly in the tropics or. Special attention was paid to the wall architecture, the septum with a simple pore apparatus, the annellidic type of collar and the nuclei. Hortaea werneckii is more frequently found in eutrophic thalassohaline waters at moderate temperatures, while it is not known to occur in oligotrophic or athalasso.
While the addition of salt to the medium is not required for its cultivation, h. Atlas of clinically important fungi sciortino, carmen v. The occurrence of this fungus in spain is also an unexpected finding because cases of. Pdf hortaea werneckii is an example of phaeoid dematiaceousfungi. These guidelines supersede any previous instructions for identification of molds. Hortaea werneckii is more frequently found in eutrophic thalassohaline. Synonym and classification data for phaeoannellomyces spp. Tinea nigra cause malassezia furfur phaeoannellomyces werneckii dematiaceous from aa 1. Hortaea werneckii, keratolysis, melanized fungi, superficial mycosis, tinea nigra. Treatment with keratolytic agents and topical antifungals was effective. Hay, in mandell, douglas, and bennetts principles and practice of infectious diseases eighth edition, 2015. Hortaea werneckii isolated from silicone scuba diving equipment in. The causative organism has also been described as phaeoannellomyces werneckii. Species in this genus phaeoannellomyces elegans phaeoannellomyces werneckii obsolete this obsolete species is a synonym of hortaea werneckii.
It is generally classified as a dematiaceous darkwalled fungus. Pdf tinea nigra by hortaea werneckii, a report of 22. Alternatively, you can download the file locally and open with any standalone pdf reader. Tinea nigra by hortaea werneckii, a report of 22 cases from mexico. Pdf identification of hortaea werneckii isolated from. Introduction to mycology the term mycology is derived from greek word mykes meaning mushroom. Sodium chloride as aid in identification of phaeoannelomyces wernecku and other medically important dematiaceous fungi. Tinea nigra, also known as superficial phaeohyphomycosis and tinea nigra palmaris et. Atlas of clinically important fungi sciortino, carmen v download bok. Hortaea werneckii isolated from silicone scuba diving.346 1396 726 1180 1427 116 832 1092 298 908 397 849 1294 127 262 393 1322 383 1203 1256 1230 1014 106 1265 1440 681 1029 18 868 578 823 1322 1311 406 420 1245 895 1389