18 Questions
How is Entamoeba coli distinguished from E.histolytica?
By having chromatoidal bodies with rounded ends
What characteristic helps in differentiating Entamoeba coli from E.histolytica?
Large glycogen vacuole
In what way is Entamoeba coli morphologically different from Entamoeba histolytica?
Presence of splintered chromatoidal bodies
What is a distinguishing feature of Endolimax nana?
Large eccentric endosome
Which amoeba has mature cysts with 4 nuclei?
Endolimax nana
How can Entamoeba coli be differentiated from Entamoeba dispar?
By the chromatoidal bodies
What are the common symptoms associated with Entamoeba coli infection?
Fever, chills, and diarrhea often with cramps
How can Entamoeba histolytica be differentiated from nonpathogenic Entamoeba dispar?
Based on isoenzymatic or immunologic analysis
What is the common method for diagnosing Entamoeba histolytica using stool samples?
Microscopic identification of cysts and trophozoites
Which blood examination finding is commonly seen in cases of Entamoeba coli infection?
Moderate leukocytosis
What is the treatment of choice for symptomatic intestinal or extraintestinal Entamoeba coli infections?
Metronidazole or tinidazole, followed by paromomycin or iodoquinol
Which diagnostic method is useful for identifying trophozoites in aspirates or biopsy samples of Entamoeba coli obtained during colonoscopy or surgery?
Histology
What is the process of excystation?
Amoeba escaping from the cyst and multiplying inside the host
What is the main pathogenic mechanism of E.histolytica in causing intestinal amoebiasis?
Production of flask-shaped ulcers and bloody diarrhea
What may occur about 1-3 months after the disappearance of dysentery in individuals with intestinal amoebiasis?
Development of hepatic amoebiasis
What are some factors that influence the pathogenicity of E.histolytica infections?
State of nutrition of the host
How does E.histolytica cause extraintestinal amoebiasis?
By tophozoites multiplying in the liver
What is a common outcome when small abscesses in the liver merge due to E.histolytica infection?
Formation of big liver abscesses
Test your knowledge on different species of Entamoeba including Entamoeba dispar, Entamoeba hartmanni, and Entamoeba coli. Learn about the differences between these nonpathogenic amoebae and their similarities to Entamoeba histolytica.
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