introduction: determination of the efficacy of crude entamoeba histolytica extract and its fractions (fi,fii & fiii) in antiamoebic antibody detection by elisa. material and methods: entamoeba histolytica nih:200 was cultured axenically and different fractionsof its crude amoebic extract, i.e. fi, fii & fiii, were obtained by column chromatography. efficacy of crudeand fractioned antigens for a...

Objective: Entamoeba histolytica is indistinguishable from Entamoeba dispar in direct microscopic examination. A definitive diagnosis of E. histolytica is important in terms of the treatment of the patient and to avoid unnecessary costs. This study’s aim is to determine the prevalence of E. histolytica and to make a comparison of the different diagnostic tests in the patients specimens defined ...

The human large intestine can harbor two morphologically similar amoebae; the invasive Entamoeba histolytica and the non-invasive Entamoeba dispar. Whereas E. histolytica can produce intestinal and extra-intestinal lesions, E. dispar is present in non-symptomatic carriers. Although biochemical, genetic and proteomic studies have identified clear differences between these Entamoebae, it has beco...

We report the characterization of a bacterial-type oxygen reductase abundant in the cytoplasm of the anaerobic protozoan parasite Entamoeba histolytica. Upon host infection, E. histolytica is confronted with various oxygen tensions in the host intestine, as well as increased reactive oxygen and nitrogen species at the site of local tissue inflammation. Resistance to oxygen-derived stress thus p...

Galactose and N-acetyl-D-galactosamine-inhibitable lectin of Entamoeba histolytica has roles in pathogenicity and induction of protective immunity in rodent models of amoebiasis. Recently, the intermediate subunit of the lectin, Igl1, of E. histolytica has been shown to have hemolytic activity. However, the corresponding lectin is also expressed in a non-virulent species, Entamoeba dispar, and ...

background: differential diagnosis of two protozoan parasites entamoeba histolytica and e. dispar is of great clinical and epide miologi cal importance, but except in the case of haematophagous trophozoites in acute dysentery, it is not possible to differ entiate them by microscopy. the present study was carried out from february 2005 to july 2006 in order to determine the preva lence of e. his...