Prototheca


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Prototheca

 [pro″to-the´kah]
a genus of ubiquitous yeastlike organisms generally considered as being achloric algae, occurring as spherical to elliptical cells containing thick-walled autospores. P. wickerha´mii and P. zop´fii are the species involved in human and animal infection. See also protothecosis.

Prototheca

(prō'tō-thē'kă),
A genus of an achlorophyllous alga; two species, Prototheca zopfii and Prototheca wickerhamii, cause protothecosis.

Prototheca

/Pro·to·the·ca/ (-the´kah) a genus of ubiquitous yeastlike organisms generally considered to be algae; P. wickerha´mii and P. zop´fii are pathogenic.

Prototheca

a genus of achloric algae, possibly a mutant form of Chlorella. They are saprophytic organisms that usually occupy freeliving niches in a great variety of places. Very rarely infection may occur in canine and feline skin, bovine mammary gland, canine eye and the canine colon. Identified species are P. stagnora, P.trispora, P. wickerhami, P. zopfi.
References in periodicals archive ?
The infective organism, a Prototheca sp, is an achlorophyllic and ubiquitous algae.
Prototheca wickerhamii is the Prototheca sp most commonly responsible for human infections.
Prototheca spp are considered achlorophyllic mutants of the green alga genus Chlorella.
Very high SCC ([greater than or equal to]5 million/ml) was connected with infections caused by Prototheca sp.
To the Editor: Prototheca species are achlorophyllic lower algae, ubiquitous in nature, which can cause human infections, particularly in immunocompromised patients (1).
In the laboratory, use of selective yeast media, such as Sabouraud plus gentamicin, or Mycosis IC/F vials for blood culture, which contain chloramphenicol and tobramycin, may make it difficult to detect Prototheca spp.
Disseminated protothecosis is currently rare but, due to the algae's ubiquitous nature, increasing use of immunosuppressive therapy, and increasing incidence of hematologic malignancy, Prototheca spp.
more Prototheca one year over another); (2) a preservational bias (some shells are destroyed more readily than others); or a (3) a predation-induced bias.
gt;1,000 Prototheca shells were found on hillsides near marine environments (James & Verbeek 1984).
2003) recently found significant differences in allele frequencies among collections of the endemic Prototheca staminea, but no differences among collections of Macoma balthica.
Prototheca species are aerobic, achlorophyllous, algaelike, unicellular organisms.
Prototheca species are widely distributed in the environment and have been isolated from water, sewage, and soil, but fewer than 100 cases of human infection have been reported in the literature.