Microsporidia


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Related to Microsporidia: cryptosporidium, Enterocytozoon bieneusi

Microsporidia

 

an order of protozoans of the class Cnidosporidia. There are more than 20 genera, comprising more than 300 species. They are intracellular parasites of animals, predominantly arthropods and fish. Microsporidian amoeboids reproduce asexually (by simple division and schizogony) in the cell cytoplasm of the animal host. After the sexual process (autogamy), formation of spores (sporogony) begins. The spores are usually oval (2–10 microns in length) and have a spirally wound polar thread that serves to embed the parasite in the tissue of a new host.

Microsporidians cause diseases, microsporidioses, in various animals. For example, microsporidians of the genus Nosema are the causative agents of nosematoses, and Nosema cuniculi is possibly the cause of the human disease multiple sclerosis. Many species of Microsporidia are parasites of fish and commercial arthropods. More than 100 species are beneficial as parasites of harmful arthropods, since they cause their mass destruction; the possibility of using these species for the biological control of pests is being investigated.

REFERENCES

Zhiznzhivotnykh, vol. 1. Moscow, 1968.
Weiser, J. Die Mikrosporidien als Parasiten der Insekten. Hamburg-Berlin, 1961. I. V. Issi
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Microsporidia were not detected in fecal samples during the 6-month follow-up.
Insanlarda Microsporidia olgusu ilk kez 1959 yilinda ciftlik hayvanlariyla temas oykusu olan Japon bir cocukta tanimlanmistir (10).
Examining a handful of genes, Keeling and other researchers demonstrated that the single-gene tree had put microsporidia in the wrong kingdom.
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.
Las esporas de Microsporidia o estadios infectantes al salir del organismo humano, pueden vivir fuera del hospedero por largo tiempo y debido a su tamano pequeno y pared celular quitinosa, persisten en fuentes de agua y sobreviven a condiciones ambientales adversas, por lo que la exposicion a estas esporas podria ser bastante comun (10).
intestinalis en especifico, solo prevalencias generales en base a la presencia de esporas del phylum Microsporidia en las muestras fecales (10-12).
Results: Intestinal parasitic pathogens were detected in 35 per cent patients, and the major pathogens included Cryptosporidium parvum (12%) the most common followed by Isospora belli (8%), Entamoeba histolytica/Enatmoeba dispar (7%), Microsporidia (1%) and Cyclospora (0.
Nosema apis was the leading cause of microsporidia infections among domestic bee colonies until recently when N.
Molecular methods for microsporidia detection; use of an inhibitor control with real-time PCR.
In a recent study in Ghana looking at enteric pathogenic protozoan organisms in sachet water, 77 % of the samples were found to contain infective stages of pathogenic parasitic organisms such as Microsporidia sp, Cryptosporidium parvum, Cyclospora cayetenensis, Sarcocystis sp etc.