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Parasitology > Ciliates > Flashcards

Ciliates Flashcards

1
Q

What do you call the largest protozoan infecting man?

only ciliate known to cause human disease

A

Balantidium coli

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2
Q

MOT of Balantidium coli?

A

Ingestion of cysts

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3
Q

Infective stage of Balantidium coli?

A

Cysts

usually found in fecally contaminated food or water

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4
Q

nucleus number of Balantidium coli troph & cyst?

A

2 nuclei

Macro & Micro

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5
Q

What is the natural host of Balantidium coli?

also definitive host

A

Pig

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6
Q

What types of hosts are humans in Balantidium coli infections?

A

Accidental hosts

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7
Q

Habitat of Balantidium coli?

A

Colon (cecum)

Large Intestine

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8
Q

The ____ of Balantidium coli trophozoite is for sexual reproduction.

what nucleus? micro or macro?

A

micronucleus

it also lies in concavity of the macronucleus (near d macro). contains DNA and involved in genetics & cell division.

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9
Q

The ____ Balantidium coli trophozoite is for vegetative function. Responsible for the daily metabolic activity of the parasite.

what type of nucleus? macro or micro?

A

Macronucleus

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10
Q

Appearance of Balantidium coli trophozoite?

A

Ellipsoid, tapered in anterior portion

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11
Q

Balantidium coli cyst appearance?

A

Spherical/Ellipsoidal/Oval

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12
Q

The cyst wall of Balantidium coli cyst is what?

A
  • double-walled
  • refractile (shiny)

cilia is enclosed within the cyst wall

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13
Q

what do you call the structure of a Balantidium coli trophozoite that is funnel-shaped and represents the mouth?

A

Cytostome

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14
Q

What structure of a Balantidium coli trophozoite serves as the anus of the parasite where waste products are eliminated?

A

Cytopyge

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15
Q

Motility of Balantidium coli trophozoite

A
  • Thrown-ball motility
  • Rotary motility
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16
Q

Balantidium coli may cause what diseases?

A
  • Balantidiasis
  • Balantidial Dysentery
  • Intestinal perforation
  • Colonic Ulceration
17
Q

Virulence factor of Balantidium coli?

lytic enzyme that causes ulceration

A

hyalurodinase

it is an enzyme capable of digesting hyaluronic acid present in the epithelial tissues, thereby causing ulcerations.

18
Q

Three clinical manifestations of Balantidium coli?

A
  • Asymptomatic
  • Acute
  • Chronic
19
Q

Laboratory diagnosis of Balantidium coli?

A
  • DFS
  • Biopsy (possibly thru sigmoidoscopy; tusok sa pwet)
  • Bronchoalveolar washings (in case of pulmonary infections)
20
Q

Drug treatment for Balantidium coli infection

A
  • Metronidazole
  • Iodoquinol
  • Tetracycline (or Terramycin)

Parasitology (25 decks)

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