UNIT 4.2. SARCODINA: COMMENSAL AMOEBA

Entamoeba coli

harmless inhabitant of the colon

Entamoeba dispar;

PCR

morphologically similar with E. histolytica but with a different genome

• Distinguished from E. histolytica by _______

Entamoeba hartmanni

• similar with E. histolytica but smaller and has no RBC inclusion

• Known as the “small race” of E. histolytica

• Their cysts are quadrinucleated with coarse cytoplasm; immature cyst has chromatoidal bars

Entamoeba polecki;

Cyst;

uninucleated

• parasite of pigs and monkeys;

• rarely infect humans

• Distinguished from E. histolytica by _____

• Their cysts are consistently ______________

Entamoeba gingivalis;

cyst

• can be found in the mouth (gum and teeth surface)

• Abundant in cases of oral disease

• No ______ stage

• Transmitted through kissing, droplet spray, sharing utensils

Entamoeba moshkovskii

• morphologically similar with E. histolytica and E. dispar o

• Classified as free-living amoeba (rarely infect humans)

• Osmotolerant

• Able to survive at temperature range of 0-41°C

Endolimax nana

• smallest protozoa

• Its trophozoite form is sluggish and mononuclear

• Its cyst form is quadrinucleated with eccentric karyosome (Cross-eyed cyst)

Iodamoeba butschlii

• has an iodine cyst (cyst which has affinity to iodine)

• Has a large glycogen vacuole/body that stains deeply with iodine

• Uninucleated