Gregg 12-19-07 Parasitic Protozoa

Front 1

Helminths (wormlike invertebrates)
Class ________ (roundworms – body round in
cross-section)
Class _______ (flatworms – body flattened and
segmented)
Class _______ (trematodes, flukes – body
flattened, leaf-shaped and nonsegmented)

Back 1

Helminths (wormlike invertebrates)
Class Nematoda (roundworms – body round in
cross-section)
Class Cestoda (flatworms – body flattened and
segmented)
Class Digenea (trematodes, flukes – body
flattened, leaf-shaped and nonsegmented)

Front 2

Protozoa (unicellular eukaryotic microorganisms)
Class Lobosea (organisms that move by ___________)
Class Zoomastigophorea (organisms that move by ________)
Class Kinetofragminophorea (organisms that move by _____)
Class S________ (organisms with both sexual and asexual
reproductive cycles)

Back 2

Protozoa (unicellular eukaryotic microorganisms)
Class Lobosea (organisms that move by pseudopodia)
Class Zoomastigophorea (organisms that move by flagella)
Class Kinetofragminophorea (organisms that move by cilia)
Class Sporozoea (organisms with both sexual and asexual
reproductive cycles)

Front 3

Lobosea – Entamoeba histolytica (Ameba)

Describe:
Trophozoites nucleus/i
Cysts nucleus/i

Back 3

Trophozoites have 1 nucleus

Cysts have multiple nuclei

Front 4

Lobosea – Entamoeba histolytica (Ameba)

what body parts are disease processes?

Back 4

intestine
liver
lungs
brain

Front 5

Lobosea – Entamoeba histolytica (Ameba)

A trophozoite may have multiple (black) round things inside it. What are those?

What are the long black things in a cyst?

Back 5

round: ingested RBCs

long: chromatoid body

Front 6

DDx of Lobosea – Entamoeba histolytica (Ameba)

Back 6

ulcerative colitis, carcinoma, hepatitis (if liver involved), other intestinal parasites and diverticulitis

Front 7

Treatment for Lobosea – Entamoeba histolytica (Ameba)

Back 7

Iodoquinol, paromomycin, metronidazole (flagyl), dehyroemetine (combinations of these)

Front 8

Traveler's diarrhea is caused by what?

Back 8

Zoomastigophorea – Giardia lamblia

Front 9

Zoomastigophorea – Giardia lamblia

describe cyst and trophozoite

Back 9

cyst: oval w/ multinuclei

trophozoite: teardrop with 2 eyes (nuclei) and flagella

Front 10

Pathology & Symptoms of Giardiasis:
- Abdominal pain, ____-smelling diarrhea and gas ("______ burps” – smells like rotten _____),
irritation of intestinal mucosa with shortening of _____ and inflammatory foci.
- Malabsorption in heavy infections.
- No _____ observed in the stool.

Back 10

Pathology & Symptoms of Giardiasis:
- Abdominal pain, foul-smelling diarrhea and gas (“purple burps” – smells like rotten eggs),
irritation of intestinal mucosa with shortening of villi and inflammatory foci.
- Malabsorption in heavy infections.
- No blood observed in the stool.

Front 11

Therapy for Zoomastigophorea – Giardia lamblia

Back 11

Quinacrine, metronidazole, furazolidone

Front 12

Kinetofragminophorea – ___________ coli
(___________ Dysentery)

Back 12

Kinetofragminophorea – Balantidium coli
(Balantidial Dysentery)

Front 13

Describe Cysts and Trophozoites of Kinetofragminophorea – Balantidium coli
(Balantidial Dysentery)

Back 13

Cysts: round w/ long nucleus

Trophozoite: oval.long with long nucleus

Front 14

___ feces indicated to be a potential source of infection with Kinetofragminophorea – Balantidium coli

Back 14

Pig feces indicated to be a potential source of infection with Kinetofragminophorea – Balantidium coli

Front 15

Zoomastigophorea – Giardia lamblia has flagella

Kinetofragminophorea – Balantidium coli has ____

Back 15

Zoomastigophorea – Giardia lamblia has flagella

Kinetofragminophorea – Balantidium coli has cilia

Front 16

Kinetofragminophorea – Balantidium coli
(Balantidial Dysentery)
is the Only ________ protozoan that infects humans.

Back 16

Only ciliated protozoan that infects humans.

Front 17

Therapy for Kinetofragminophorea – Balantidium coli
(Balantidial Dysentery)

Back 17

Tetracycline, iodoquinol, metronidazole

Front 18

Sporozoea – C_____________ parvum
(Cryptosporidiosis)

Back 18

Sporozoea – Cryptosporidium parvum
(Cryptosporidiosis)

Front 19

To get sick with cryptosporidiosis, you must ingest its ______

Back 19

oocyst

Front 20

what part of the body does the oocyst release the sporozoite

Back 20

small intestine

Front 21

oocyst --> sporozoite --> trophozoite --> type I Meront with merozoites --> type II --> ...... where are the trophozoites becoming Meront?

Back 21

epithelium of intestine

Front 22

How do you diagnose C. parvum (crypto)

Back 22

Acid-fast stain, IF of oocysts in stool samples.

Front 23

Therapy for crypto

Back 23

Self-limited infection; Nitazoxanide (Alinia)

Front 24

Sporozoea – Isospora belli (Isosporiasis)

the oocyst contains sporoblasts that become sporocysts that become what (infectious)?

Back 24

sporozoites

Front 25

Sporozoea – Isospora belli (Isosporiasis)

the oocysts axexually become merozoites in the intestinal epithelium and then sexually create ______ that are released in the feces

Back 25

oocysts

Front 26

Sporozoea – Isospora belli (Isosporiasis)

How do you make the diagnosis

Back 26

Acid-fast stain, IF of oocysts in stool samples.

Front 27

what is the treatment for isosporiasis

Back 27

Self-limiting; Trimethoprim-Sulfamethoxazole (Bactrim, Septra)