Protozoa w/ quiz 1

Trophozoite

the feeding, motile stage of protozoa

Cyst

Inactive stage of organism with protective cell wall

Peripheral chromatin

portion of nucleus

Karyosome

small mass of chromatin located with in the nucleus of certain protozoa

Chromotoid body

deep staining, bar shaped, round, or splinters inclusions

Glycogen vacuole

food storage vacuole for amebic cysts

Entamoeba histolytica

method of Entamoeba histolytic infection

ingestion of cysts from contaminated water

You see ingested RBCs in an amoeba what is the species?

Entamoeba histolytica

Entamoeba histolytica troph

Entamoeba histolytica troph

Chromatoid bodies have rounded or blunt ends in the Cyst form of this parasite and it is pathogenic

Entamoeba histolytica

Entamoeba histolytica cyst

Charcot- leyden crystals

What is the result of broken down eosinophils associated with tissue invading parasitic infections?

Charcot-Leyden crystals

What are 6 commensal intestinal amebae

1. entamoeba dispar

2. entamoeba hartmanni

3. Entamoeba coli

4. endolimax nana

5. Iodamoeba butschlii

6. Entamoeba polecki

What parasite is identical to E. histolytica but non-pathogenic

E. dispar

E. hartmanni

E. hartmanni differs from E. histolytica in its

size

• E. hartmanii- 8-10um

• E. histolytica- 15-20um

smaller one

E. hartmanni troph

the smaller one

E. hartmanni cyst

Entamoeba coli

E. coli troph form

E.coli troph form

What parasite has splintered chromatoidal bars and may contain glycogen vacuoles and has up to 8 nuclei?

E. coli

E. coli cyst

E.coli cyst

E. polecki

What does E. polecki do that other ameba dont

he is junky, he eats everything

Trophozoite of E. polecki is hard to determine because

– difficult to differentiate
– may resemble E. coli and E. histolytica

E. polecki cyst form may contain and inclsion body is it glycogen?

no

E. polecki cyst form

E. nana

E. nana troph form

E.nana troph form

What cyst form ameba is characteristically oval and has up to 4 nuclei?

E. nana

E. nana cyst

E. nana cyst

Iodamoeba butschlii

What parasite has a glycogen vacuole

Iodamoeba butschlii

What color does the glycogen vacuole stain with iodine

brown

Iodamoeba butschlii cyst

Iodamoeba butschlii cyst

What are two free living opprutunistic amebae

• naegleria fowleri

• acanthamoeba species

What causes infections of naegleria fowleri

inhalation of contaminated water or aerosols

What is Naegleria fowleri’s primary disease

Primary amebic meningoencephalitis

Naegleria fowleri

Naegleria fowleri

Naegleria fowleri cyst

What species of ameba is associated with keratis from poor care of contacts and granulomatis amebic encephalitis

acanthamoeba spp.

acanthamoeba spp. cysts

acanthamoeba spp. troph

What ameaba infects with its troph form

Dientamoeba fragilis (wont be found in concentrate)

Dientamoeba troph

Dientamoeba troph

Dientamoeba troph

With naegleria fowleri in CSF what is the most important treatment for the fluid

Room temp to see motility