U4.3 - Protozoans (Ciliates) Flashcards
largest protozoan
Balantidium coli
only pathogenic ciliate
Balantidium coli
Common cause of infection on pigs
Balantidium coli
Balantidium coli infection is mostly?
asymptomatic
Balantidium coli:
definitive or final host
pigs
Balantidium coli:
accidental host
humans
Balantidium coli:
habitat
large intestine
Balantidium coli:
virulence factor
hyaluronidase
Balantidium coli:
pathology
- Balantidiasis/ balantidial dysentery
- Intestinal perforation
- Colonic Ulcerations
Balantidium coli:
Diagnosis
- DFS
- Pulmonary specimen wet preparations
- Concentration Techniques,
- Biopsy
enzyme digesting hyaluronic acid in tissue that can cause tissue disruption and ulceration
hyaluronidase
mouth of B. coli
cytostome
2 nuclei and their functions
micronucleus: reproduction
macronucleus: vegetative, nutrient function
entry and exit of food
cytopyge
in the B. coli, where are the cilia located?
inside
Balantidium coli (trophozoite):
motility:
shape:
size:
motility: rotary, boring, may be rapid
shape: ovoid with tapering anterior end
size: 50-100 um x 40-70 um
Balantidium coli (trophozoite):
other features
Body covered with cilia, which tend to be longer near cytostome; cytoplasm may be vacuolated
Balantidium coli (cyst):
motility:
shape:
size:
motility: nonmotile
shape: spherical or oval
size: 50-70 um x 50-55 um
Balantidium coli (cyst):
other features
Macronucleus and contractile vacuole are visible in young cysts; in older cysts, internal structure appears granular; cilia difficult to see within the cyst wall
Balantidium coli (trohpozoite):
motility
thrown-ball motility
