Microsporidia


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Related to Microsporidia: cryptosporidium, Enterocytozoon bieneusi

mi·cro·spor·id·i·a

(mī'krō-spōr-id'ē-ă),
Common name for members of the protozoan phylum Microspora. It includes some 80 genera parasitizing all classes of vertebrates and many invertebrates, especially the insects. Several genera, such as Encephalitozoon, Enterocytozoon, Nosema, Vittaforma, Pleistophora, and Trachipleistophora have been implicated in the infection of immunocompromised humans.

Microsporidia

A phylum of ubiquitous spore-forming unicellular parasites, which have been reclassified as fungi. Microsporidia have a long polar filament and a polar cap that serves as a means of extrusion. They primarily infect infects, but crustaceans, fish and humans are not immune. Of the estimated million species of Microsporidia, 1500 have been formally named.

Microsporidia genera that cause human disease
• Brachiola—B algerae, B connori, B vesicularum.
• Encephalitozoon—E cuniculi, E hellem, E intestinalis.
• Enterocytozoon—E bieneusi (prolonged production of intra- and extracellular spores by Enterocytozoon bieneusi is not always associated with systemic disease).
• Microsporidium—M ceylonensis, M africanum.
• Nosema—N ocularum.
• Pleistophora species.
• Trachipleistophora—T hominis, T anthropophthera.
• Vittaforma species—V corneae.

Microsporidia

Parasitology A phylum of ubiquitous unicellular obligate intracellular protozoans–eg, Enterocytozoon, which infect insects and vertebrates, and humans. See Encephalitozoon species.
References in periodicals archive ?
It could be explained that the combined infection method of feeding with infected tissue and cohabitation would increase the number of microsporidia exposed to shrimp and led to accelerate the process of infection.
The closest group to the MCCM clade was the clade comprising all the fungi except the Microsporidia (FWM clade).
Microsporidia, it turned out, were nowhere near being relicts.
The standard suspensions of Microsporidia were prepared 1 week prior to each trial.
The phylum Microsporidia is subdivided into a variety of families and genera, which includes the genus Encephalitozoon which in turn includes the important species Encephalitozoon cuniculi, E.
As little is known about microsporidia and its importance as infectious agent in immunocompromised patients, we conducted a retrospective study in 347 stool samples analyzed for the presence of microsporidiosis to describe the associated underlying diseases.
Investigation of Microsporidia confirmed a rare pathogen Encephalitozoon intestinalis in the patient's stool sample via species-specific immunofluorescence antibody (IFA) assay and albendazole treatment was started at a dose of 2x400 mg [d.sup.-1].
Numerous parasites of mosquito larvae have been tested for mosquito control, including Nematode (mermithid worms) and parasitic protozoa (Microsporidia, Tetrahymena, Lambonella and Helicosporidium) but none has proven suitable for operational use.
Son microorganismos intracelulares obligados pertenecientes al phylum Microsporidia, compuesto por mas de 160 generos y 1.300 especies (3); en la actualidad son 7 los generos que se han identificado en las infecciones humanas: Enchephalitozoon, Enterocytozoon, Nosema, Pleistophora, Trachipleistophora, Anncaliia (Brachiola) y Vittaforma (4,5) y un "falso" genero Microsporidium, donde se ubican los microorganismos que aun no han podido ser clasificados.
The remaining phyla, Chytridiomycota, Neocallimastigomycota, and Microsporidia, were found in <50% of dogs in both groups.
Generally, diarrhoea in humans is caused by enteric pathogens such as bacteria, parasites, fungi and viruses.3 Parasites such as Cryptosporidium, Isospora, Microsporidia, Giardia, Entamoeba, Cyclospora, Blastocystis, Strongyloides, and Ascaris have been documented in AIDS patients.4 These infections may be very severe in immunosuppressed patients with CD4 T-lymphocyte counts below 200 cells/ml.