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.

Microsporidia

an order of the subphylum Sporozoa characterized by having small spores and one polar capsule. Common occurrence is as parasites of arthropods and fish. Includes nosema. In finfish may cause xenomas, in crustaceans cause 'cotton flesh'.
References in periodicals archive ?
First detection of Nosema ceranae, a microsporidian parasite of European honey bees (Apis mellifera), in Canada and central USA.
Myositis due to the microsporidian Anncaliia (Brachiola) algerae in a lung transplant recipient.
Infection of the cockle Cerastoderma edule in the Baie des Veys (France) by the microsporidian parasite Steinhausia sp.
To confirm the identity of the microsporidian identified in tissue sections by ISH, PCR was performed on DNA isolated from pleural and peritoneal tissue and abdominal fluid from 5 of 7 animals with proliferative serositis.
By using molecular analysis, we characterized the microsporidian from the patient in our study to the species level (T.
Surveys were conducted to search specifically for the microsporidian pathogen Vairimorpha invictae in red imported fire ants (Solenopsis invicta), in the U.
2007), and microsporidian protozoan (Thelohania solenopsae; Oi & Williams 2002; Oi & Valles 2008).
Prevalence of microsporidiosis due to Enterocytozoon bieneusi and Encephalitozoon (Septata) intestinalis among patients with AIDS-related diarrhea: determination by polymerase chain reaction to the microsporidian small-subunit rRNA gene.
These agents include the microsporidian parasite, Kneallhazia solenopsae, and decapitating flies found in the genus Pseudacteon (Pereira 2003).
We show that the microsporidian fungus Enterocytozoon bieneusi is associated with lower rates of weight gain in children in Uganda with persistent diarrhea.
Kneallhazia (=Thelohania) solenopsae is an intracellular microsporidian parasite that infects S.
Problems with viral diseases (Marti et al, 2007), microsporidian infections, and possible stress-induced factors due to diet formulations that may be less than optimal, combine to present difficulties in mass rearing of this insect on artificial diet.