Intestinal Parasite II (PART 2) Flashcards Preview

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Flashcards in Intestinal Parasite II (PART 2) Deck (22):
1

What are opportunistic, obligate intracellular pathogens?

Microsporidia

2

Microporidia:
- not protozoa...what are they?

fungi

3

Two types of microsporidia that are common human gastrointestinal pathogens

Enterocytozoon bieneus
Encephalitozoon intestinalis

4

Microporidia:
- Who are most of its victims?

severely immunocompromised AIDS patients represent most victims

5

Microporidia:
- infectious form

spore

6

Microporidia:
- What stain should you use for microscopic exam

Chromotrope 2R and Ryan's modified-trichrome stain

7

Microporidia:
- Gold standard test
- test of choice

Gold: Transmission electron microscopy
Choice: immunofluorescence

8

Encephalitozoon species
- appearance

in gram stain, resembles large GPRs

9

Blastocystis species:
- Infectious form

cyst (cyst released also)

10

Blastocystis species:
- role in disease

debateable role (sometimes no symptoms other times diarrhea etc.)

11

Chilomastix mesnili:
- pathogenic or nonpathogenic

nonpathogenic protozoa

12

Chilomastix mesnili:
- appearance of trophs

External flagella, lopsided shortened pear shape, one nucleus, cytosome looks like mouth (smiling fish)

13

Chilomastix mesnili:
- appearance of cysts

small lemon shape cyst, one nucleus, cytosine small, looks like a shephard's crook

14

Endolimax nana:
- pathogenic or nonpathogenic

nonpathogenic

15

Endolimax nana:
- appearance of troph

without peripheral nuclear chromatin, large irregular karyosome (nana with dilated pupil)

16

Endolimax nana:
- appearance of cyst

four nuclei (nana has 4 eyes), short oval shape, small nuclei surrounded by clear space

17

Enteromonas hominis:
- path or non path

nonpath

18

Enteromonas hominis:
- appearance

?

19

Iodamoeba butschlii:
- path or non path

nonpath

20

Iodamoeba butschlii:
- cyst appearance
- troph appearance

cyst: large vacuole in the cyst

21

Pentatrichomonas hominis:
- path or non path

nonpath

22

Pentatrichomonas hominis:
- appearance of trophs

external flagella, lopsided pear shape, one nucleus, undulating membrane and axostyle (fish with spike)