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Clinical Laboratory Techniques > Protozoa Phylum Apicomplexa > Flashcards

Protozoa Phylum Apicomplexa Flashcards

1
Q

Sporozoans

A

4600 species

all are parasitic

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2
Q

What is the name given to the cyst stage for Sporozoans?

A

Oocysts

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3
Q

What Sporozoans have veterinary significance

A 
Cystoispora
Toxoplasma
Cryptosporidium
Babesia
Eimeria
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4
Q

What is the common term we call Apicomplexa?

A

Coccidia

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5
Q

What other species is Coccidia used to describe

A

Cystoisospora spp
Eimeria spp
Cryptosporidium spp
Toxoplasma gondii

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6
Q

Cystoisospora spp

A

A protozoal parasite of the small intestine of dogs and cats

AKA Isospora

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7
Q

What is the predilection site of Cystoisospora spp

A

The small intestine

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8
Q

What is the most commonly diagnosed diseases in puppies and kittens?

A

Coccidiosis

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9
Q

Is coccidiosis a problem in adult dogs?

A

Rarely

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10
Q

What is the diagnostic stage of coccidiosis and how is it diagnosed?

A

The oocyst

Fecal floatation

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11
Q

Toxoplasma gondii

A

The intestinal coccidian of cats

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12
Q

What is the definitive host of Toxoplasma gondii?

A

Cat

They only shed the oocysts for less than 2 weeks for their entire life

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13
Q

How do we diagnosis Toxoplasma gondii?

A

Fecal flotation

Immunologic tests

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14
Q

What is fecal flotation looking for?

A

Cysts

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15
Q

What are the Immunologic tests looking for?

A

Antibodies

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16
Q

How do humans get a Toxoplasma gondii infection?

A

Undercooked meat
Unwashed produce
Gardening
Contact with cat feces

17
Q

Are cats symptomatic for Toxoplasmosis

A

Usually asymptomatic intestinal infection

Usually a chronic infection

18
Q

If there is an acute infection of Toxoplasmosis what are the symptoms in cats?

A

Hepatitis
Seizures
Cachexia

19
Q

Is it common to find toxoplasma oocytes in infected cats?

A

No, because cats only shed for 1 to 3 weeks

20
Q

What are the two ways cats can get Toxoplasmosis?

A

Ingestion of paratenic host

Ingestion of oocytes from soil or contaminated objects

21
Q

What are some examples of paratenic hosts that carry Toxoplasmosis

A

Rodents
Birds
Mutton or pork in raw diet food that contains bradyzoites

22
Q

What are the three different stages of Toxoplasma gondii?

A

Oocytes
Tachyzoites
Bradyzoites

23
Q

Toxoplasma gondii Oocytes

A

Only develop in and shed by felids

24
Q

Toxoplasma gondii Tachyzoites

A

Rapidly dividing tissue stage

25
Q

Toxoplasma gondii Bradyzoites

A

Slowly dividing, encysted tissue stage

26
Q

What is the prepatent period of Toxoplasma gondii dependent on?

A

How the cats get Toxoplasma

27
Q

The prepatent period when the cat ingests raw meat

A

3-10 days after tissue cysts

28
Q

The prepatent period when the cat ingests oocyte from the environment?

A

19-48 days

29
Q

How long does it take for Toxoplasma eggs to become infected after they are shed by the cats?

A

1 to 5 days

Survive for months to years

30
Q

How does a human fetus contract toxoplasmosis?

A

Through the placental connection with its infected mother

31
Q

Antibody testing in humans and cats

A

Check for antibodies, prior to exposure

Can’t accurately predict oocyst shedding

32
Q

Babesia canis

A

An example of a hemoprotazoan

Intracellular parasite of RBCs of dogs

33
Q

What else is the pear-shaped body called?

A

Piroplasm

34
Q

How do you diagnosis Babesia?

A

Stained blood smear

Inclusions on the RBC

35
Q

What is the intermediate host of Babesia?

A

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Clinical Laboratory Techniques (45 decks)

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