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Amoebiasis, or amoebic dysentery, is an infection of the intestines caused by a parasitic amoeba Entamoeba histolytica. [3] [4] Amoebiasis can be present with no, mild, or severe symptoms. [2] Symptoms may include lethargy, loss of weight, colonic ulcerations, abdominal pain, diarrhea, or bloody diarrhea.
Entamoeba histolytica is the pathogen responsible for invasive 'amoebiasis' (which includes amoebic dysentery and amoebic liver abscesses). Others such as Entamoeba coli (not to be confused with Escherichia coli ) and Entamoeba dispar [ 3 ] are harmless.
Clockwise from top right: Amoeba proteus, Actinophrys sol, Acanthamoeba sp., Nuclearia thermophila., Euglypha acanthophora, neutrophil ingesting bacteria. An amoeba (/ ə ˈ m iː b ə /; less commonly spelled ameba or amœba; pl.: amoebas (less commonly, amebas) or amoebae (amebae) / ə ˈ m iː b i /), [1] often called an amoeboid, is a type of cell or unicellular organism with the ability ...
A amoebic liver abscess is a type of liver abscess caused by amebiasis. [1] It is the involvement of liver tissue by trophozoites of the organism Entamoeba histolytica and of its abscess due to necrosis.
For example, Shigella is a longstanding World Health Organization (WHO) target for vaccine development, and sharp declines in age-specific diarrhea/dysentery attack rates for this pathogen indicate that natural immunity does develop following exposure; thus, vaccination to prevent this disease should be feasible. The development of vaccines ...
The usage of conventional therapeutics to treat amoebiasis if often linked with substantial side effects, a threat to the efficacy of these therapeutics, further worsened by the development of drug resistance in the parasite. [20] Amoebic meningoencephalitis and keratitis is a brain-eating amoeba caused by free-living Naeglaria and Acanthomoeba.
The condition can be difficult for doctors to diagnose, because it is a rare disease. [12] A brain biopsy will reveal the presence of infection by pathogenic amoebas. In GAE, these present as general inflammation and sparse granules.
Free-living amoebae (or "FLA") [1] are a group of protozoa that are important causes of infectious disease in humans and animals.. Naegleria fowleri is often included in the group "free-living amoebae", [2] [3] and this species causes a usually fatal condition traditionally called primary amoebic meningoencephalitis (PAM).