Microsporidia

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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 ?
Interestingly, this study is the first evidence of vertical transmission of a microsporidium in decapods (Order Decapoda) within the same Class Malacostraca, Subphylum Crustacea and Phylum Arthropoda with Order Amphipoda.
Laboratory host specificity testing of the fire ant microsporidium pathogen Vairimorpha invictae (Microsporidia: Burenellidae).
Eight genera are described in human hosts: Enterocytozoon, Encephalitozzon, Pleistophora, Trachipleistophora, Vittaforma, Brachiola, Nosema, and Microsporidium. Fourteen species are associated with human diseases, including Enterocytozoon bieneusi and Encephalitozoon intestinalis.
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.
Fecal smears were prepared and stained by Trichrome stain method for the recovery of Microsporidium spores.
Protozoa that typically involve the small bowel include Cryptosporidium, Microsporidium, Isospora, Cyclospora, and Giardia lamblia.
(9) With a CD4 count of less than 50 opportunistic infections such as Cryptosporidium and Microsporidium play a significant role.
(1999) han reportado, por ejemplo, que los parasitos patogenos aislados mas comunmente en pacientes infectados con el virus de la inmunodeficiencia humana o con el sindrome de la inmunodeficiencia adquirida son Cryptosporidium parvum, Isospora belli y Microsporidium.