PRELIM LEC: COMMENSAL AMOEBA

the amebae may be mistaken for the pathogenic of what parasite?

Entamoeba histolytica

The genus of entamoeba has what?

Spherical nucleus

How many nucleus have in trophozoites in E. histolytica

One

The genus of endolimax has what?

Vesicular nucleus

This genus is characterized by a large, chromatin-rich karyosome surrounded by a layer of achromatic globules and anchored to the nuclear membrane by achromatic fibrils.

Iodamoeba

What parasite under the commensal amebae which has no cyst stage and does not inhabit the intestines?

Entamoeba gingivalis

What structure is pass through the acidic stomach and remain viable because of protective cyst walls.

Cysts

What structure is occurs in the alkaline environment of the lower small intestines

Excystation

What structure it occurs as amebae pass through the lower colon where colonic contents are more dehydrated.

Encystation

What parasite is similar to e. Histolytica and morphologically but their DNA and ribosomal RNA are different.

Entamoeba dispar

It is a non-pathogenic species that is morphologically indistinguishable from E. histolytica and E. dispar, but differs from them biochemically and genetically.

Entamoeba moshkovskii

It is relatively similar to appearance of e. Histolytica

Entamoeba hartmanni

Trophozoites measures of e. Hartmanni

3-12 um in diameter

Shaped of mature cysts in e. Hartmanni

Rod-shaped with rounded

What parasite that ingest the RBC

Entamoeba histolytica

It is cosmopolitan in distribution, and is considerably more common than other human amebae.

Entamoeba coli

Trophozoites of e. Coli is measure

15-50 um in diameter

Size of cyst in entamoeba coli

10-35 um in diameter

How many nuclei in entamoeba coli?

8-4

What use staining of e. Coli to reveal dark-staining, perinuclear masses, which are actually glycogen

Iodine

What parasite is found in the intestines of pigs and monkeys.

Entamoeba polecki

Motility of trophozoites of E. polecki is what?

Sluggish

What parasite that can be distinguished from E. histolytica in that the former’s cyst is consistently uninucleated, and chromatoidal bars are frequently angular or pointed.

Entamoeba polecki

• This parasite that is found in a apes and monkeys

• It is morphologically identical to E. polecki.

Entamoeba chattoni

What parasite that can be found in the mouth

Entamoeba gingivalis

Trophozites measure of e. Gingivalis

10-20 um

• What parasite that lives on the surface of gum and teeth, in gum pockets, and sometimes in the tonsillar crypts.

• This species has no cyst stage.

Entamoeba gingivalis

What is mode transmission of E. Gingivalis?

• Through kissing

• Droplets spray

• sharing utensils

• What parasite that are small, with a diameter of 5 to 12 μm, and exhibit sluggish movement.

• They have blunt, hyaline pseudopodia, and the nucleus has a large, irregular karyosome.

Endolimax nana

Tophozites average of iodamoeba butschlii

9 to 14 μm in diameter

What parasite It is identified by its characteristic large, vesicular nucleus with a large, central karyosome, surrounded by achromatic granules.

Iodamoeba butschlii

A parasite Iodine staining reveals dark-staining, perinuclear masses, which are actually glycogen

Entamoeba coli

Diagnosis of commensal amebae is done through what?

stool examination

a method used in parasitology to identify and quantify parasites in stool samples

Formalin ether/ethyl acetate concentration technique

What used method for e. Gingivalis

Swab test

What parasite that used in a swab between the gums and teeth is examined for trophozoites.

Entamoeba gingivalis

Cysts are recovered from What consistency of stool?

Formed stool

while trophozoites are recovered from what consistency of stool?

watery or semi-formed stools

The best demonstrated by direct fecal smear.

Trophozoites

What recovering cyst the use of concentration techniques

FECT

Treament of commensal ameba

No treatment

E. gingivalis lives on the surface of

gum and teeth

Endolimax nana Food vacuoles found in the cytoplasm may contain

bacteria

uninucleated, and has a large glycogen body which stains dark brown with iodine

Iodamoeba Cysts