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Entamoeba histolytica in peripheral blood Life-cycle of Entamoeba histolytica. Entamoeba histolytica is an anaerobic parasitic amoebozoan, part of the genus Entamoeba. [1] Predominantly infecting humans and other primates causing amoebiasis, E. histolytica is estimated to infect about 35-50 million people worldwide. [1] E. histolytica infection ...
Chromatoidal bodies are aggregations of ribosomes found in cysts of some amoebae including Entamoeba histolytica and Entamoeba coli. They exist in the cytoplasm and are dark staining. In the early cystic stages of E. histolytica, chromatid bodies arise from aggregation of ribosomes forming polycrystalline masses. As the cyst matures, the masses ...
Amoeba, Entamoeba histolytica uses holozoic nutrition. Holozoic nutrition (Greek: holo-whole ; zoikos-of animals) is a type of heterotrophic nutrition that is characterized by the internalization and internal processing of liquids or solid food particles. [1]
Entamoeba coli is a non-pathogenic species of Entamoeba that frequently exists as a commensal parasite in the human gastrointestinal tract. E. coli (not to be confused with the bacterium Escherichia coli) is important in medicine because it can be confused during microscopic examination of stained stool specimens with the pathogenic Entamoeba histolytica. [1]
The cystic form of this protozoan has a diameter as small as 9.5 μm and as large as 17.5 μm. Morphologically, E. polecki is extremely similar to Entamoeba histolytica and Entamoeba hartmanni. [2] Transmission follows a fecal-oral route. Infected feces with mature cysts are ingested where the cyst matures to the trophozoite in the ...
The genus Entamoeba was defined by Casagrandi and Barbagallo for the species Entamoeba coli, which is known to be a commensal organism. [2] Lösch's organism was renamed Entamoeba histolytica by Fritz Schaudinn in 1903; he later died, in 1906, from a self-inflicted infection when studying this amoeba.
Entamoeba gingivalis is an opportunistic Amoebozoa [citation needed] (reported by some as an effect of disease; not a cause [hence status as a commensal]) [2] [3] [4] and is the first amoeba in humans to be described. It is found in the mouth [5] inside the gingival pocket biofilm near the base of the teeth, and in periodontal pockets. [1]
Entamoeba moshkovskii is transmitted by contact or ingestion of any unclean water sources. It is known to be found in areas with polluted water such as brackish coastal pools, river line sediments, and originally sewage. [1] A study from eastern India recorded a moderately high prevalence of Entamoeba moshkovskii infection in pigs. [6]