Malassezia


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Malassezia

 [mal″ah-se´ze-ah]
a genus of yeastlike fungi. M. fur´fur is a species normally found on normal skin but capable of causing tinea versicolor in susceptible hosts. Called also Pityrosporon.

Malassezia

(mal'ă-sēz'ē-ă),
A genus of fungi (family Cryptococcaceae) of low pathogenicity that lack the ability to synthesize medium-chain and long-chain fatty acids and require an exogenous supply of these lipids for growth such as can be found in the skin.
[L. C. Malassez]

Malassezia

/Mal·as·se·zia/ (mal″ah-se´zhah) a genus of fungi of the form-class Hyphomycetes, including M. fur´fur, which causes tinea versicolor in susceptible individuals, and M. pachyder´matis.

Malassezia

[mal′əsē′zē·ə]
Etymology: Louis C. Malassez, French physiologist, 1842-1910
a genus of fungi. Malassezia furfur, the species normally found on human skin, can cause tinea versicolor in susceptible hosts (previous name: Pityrosporum oviculare). M. ovalis is a nonpathogenic organism found in sebaceous areas. Formerly called Pityrosporum ovale.
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Malassezia furfur

Malassezia

A genus of fungi with 10 known species of lipophilic organisms of the class Exobasidiomycetes, which do not form mycelia. It is a normal skin saprobe which, in the face of immunocompromise in the host, causes opportunistic infections. Malassezia globosa is the most aggressive, and has been causally linked to dandruff, seborrhoeic dermatitis, and the skin rash of tinea versicolor (pityriasis versicolor).

Malassezia species
• M dermatis.
• M furfur.
• M globosa.
• M nana.
• M obtusa.
• M pachydermatis.
• M restricta.
• M slooffiae.
• M sympodialis.
• M yamatoensis.
 
M globosa and M restricta are the common causes of clinical disease.
 
Management
Selenium disulfide, ketoconazole shampoos, ciclopirox olamine, coal tar, zinc pyrithione, miconazole, or tea tree oil.

Ma·las·se·zi·a

(mal'-ă-sē'zē-ă)
A genus of fungi (family Cryptococcaceae) of low pathogenicity that lack the ability to synthesize medium-chain and long-chain fatty acids and require for growth an exogenous supply of these lipids such as can be found in the skin.
[L. C. Malassez]

Malassez,

Louis Charles, French physiologist, 1842-1910.
Malassez disease - testicular cyst.
Malassez epithelial rests - epithelial remains of Hertwig root sheath in the periodontal ligament.
Malassezia - a genus of fungi (family Cryptococcaceae) of low pathogenicity.

Malassezia

a lipophilic yeast which is commonly found on the skin and particularly in normal and diseased ears of dogs and cats. Includes M. pachydermatis, M. canis. Called also Pityrosporum canis.
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Malassezia pachydermatis from a dog ear (modified Wright-Giemsa stain). By permission from Gotthelf LN, Small Animal Ear Disease, Saunders, 2005

Malassezia furfur (syn. P. orbiculare, P. ovale)
causes a tinea versicolor, a fungal dermatomycosis on the teats of goats.
References in periodicals archive ?
Sugita T, Tajima M, Takashima M, Amaya M, Saito M, Tsuboi R: New yeast species, Malassezia yamatoensis, isolated from a patient with seborrheic dermatitis, and its distribution in patients and healty subjects.
Whilst the cause of eczema remains unknown, one known trigger factor is the yeast Malassezia sympodialis.
AI am guessing that you are talking about a musty smell, symptomatic of the overgrowth of a naturally-occurring yeast called Malassezia.
Lipophilic yeasts of the Malassezia genus, as well as genetic, environmental and general health factors, contribute to this disorder.
Growth of the dimorphic yeast Malassezia furfur was also inhibited by Usnea-extract.
Comments: Elestab HP 100 exhibits two specific properties highlighted by strong clinical study results: its cationic character, guaranteeing a good substantivity to hair and scalp and its efficacy against Malassezia furfur, a fungus considered to be the most common cause of dandruff, resulting in improvement of dandruff state.
The objective of this study was to ascertain whether Malassezia organisms can be detected via cytologic examination and fungal culture of samples from the skin surface of psittacine birds, and determine whether the number of those organisms differs between unaffected psittacines and those that have chronic feather-destructive behavior, or differs by body region.
Yeasts of the genus Malassezia serve as both commensal microorganisms and pathogens on the skin of humans and domestic animals.
Ayrica firsatci bir fungal mikroorganizma olan malassezia turleri de AD'de onem tasir.
A It could be an overgrowth of a yeast on the skin called Malassezia which is common in dogs and causes a musty smell.
On most scalps there are 10 million fungi called malassezia globosa which feeds on oils on the head.
In vitro activities of ketoconazole, econazole, miconazole, and Melaleuca alternifolia (tea tree) oil against Malassezia species.