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 ?
aureus and Streptococcus pyogenes ), viruses (human papillomavirus and endogenous retroviruses), and fungi ( Malassezia and Candida albicans ).
Las levaduras del genero Malassezia son reconocidas como parte de la microbiota normal en piel de animales, aunque tambien han sido implicadas en procesos patologicos como patogenos oportunistas (Sugita et al.
Species of Malassezia are a part of the normal flora of the skin in seborrheic areas but some contributing factors such as the immunosuppression, poor hygiene, and application of oily preparations, creams, hot humid climate, corticosteroid abuse or genetic predisposition provoke Pityrosporum to change from saprophytic to pathogenic form3.
In recent years, Malassezia has garnered a lot of interest in both clinical and microbiological society.
Las levaduras del genero Malassezia son microorganismos que se encuentran como microbiota comensal en la piel de los seres humanos, y en la piel y el conducto auditivo externo de los caninos; sin embargo, bajo condiciones de humedad, sudoracion, obstruccion, desordenes en la queratinizacion e inmunosupresion, entre otros, pueden causar diferentes patologias (1-4).
33,34) Although patients with AD are not necessarily at high risk for infection, they may have a tendency to demonstrate more severe infections with herpes-viruses, human papillomaviruses, molluscum contagiosum virus, and Malassezia species.
Detection of Malassezia species from healthy cattle and cattle with otitis by direct examination and culture.
Exacerbation of psoriasis has also been linked with skin and/or gut colonisation by Staphylococcus aureus, Malassezia and Candida albicans.
Invitro study of the effect of the henna extract(Lawsoniainermis) on Malassezia species.
La pitiriasis versicolor es una micosis superficial cronica causada por hongos lipofilicos del genero Malassezia, que forman parte de la microbiota de la piel.