Entamoeba histolytica schaudinn, 1903 emended walker, 1911 separating it from entamoeba dispar brumpt, 1925. The genus entamoeba contains many species, six of which entamoeba histolytica, entamoeba dispar, entamoeba moshkovskii, entamoeba polecki, entamoeba coli, and entamoeba hartmanni reside in the. Multiple stool samples at least 3 should be tested before a negative result is reported. Entamoeba histolytica is an invasive, pathogenic protozoan, causing amoebiasis, and an important cause of diarrhea in developing countries. Entamoeba, protozoan genus of the rhizopodian order amoebida. Entamoeba histolytica is an anaerobic parasitic protozoan, part of the genus entamoeba. Entamoeba histolyticaentantoeba dispar interpretacion del. Most species are parasitic in the intestines of many vertebrates, including humans. Other amebas within this group are entamoeba coli, entamoeba hartmanni, entamoeba polecki, and iodamoeba buetschlii.
Entamoeba histolytica and entamoeba dispar basic guidelines a. The key identification feature is the number of nuclei. Difference between entamoeba histolytica and entamoeba coli. Our understanding of its epidemiology has dramatically changed since this amoeba was distinguished from another morphologically similar one, entamoeba dispar, a non pathogenic and commensal parasite. These organisms have the same life cycle figure 2621, characterized by a trophozoite stage, which lives in the colon, and a cyst stage, which is infectious. Esta enfermedad ataca al ser humano en cualquier edad, siendo ms frecuente en. Entamoeba coli introduction entamoeba coli is a nonpathogenic amoeba with world wide distribution. Entamoeba coli o agente causador da amebase comensal no patognica. These organisms are differentiated from one another by their morphology. Right, a trophozoite with hyaline ectoplasm arrow clearly distinct from the coarsely granular endoplasm containing numerous vacuoles. The invasiveness of entamoeba histolytica a continuing enigma. It is estimated that 10% of the worlds population is infected with the complex entamoeba histolyticaentamoeba dispar.