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General Parasitology > Protozoa 2 > Flashcards

Protozoa 2 Flashcards

1
Q

what are Trypanosomatids?

A

blood flagellates

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2
Q

what are Leishmanias?

A

tissue flagellates

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3
Q

how are Trypanosoma brucei and Trypanosoma congolense transmitted?

A

salivarian

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4
Q

how are Trypanosoma cruzi transmitted?

A

stercorian

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5
Q

what is the vector species of Trypanosoma brucei and Trypanosoma congolense?

A

Glossina species

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6
Q

what is the vector species of Trypanosoma cruzi?

A

Reduviid species

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7
Q

what is the life cycle of Trypanosomes?

A

indirect

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8
Q

what is the pathogenesis of trypanosomiasis?

A

antigenic variation: interferes with immune response

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9
Q

what species are susceptible to trypanosomiasis?

A

equines, some ruminants and dogs: acute
cattle: slower progress of infection

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10
Q

what are the clinical signs of trypanosomiasis?

A

anaemia, edema, fever, eye and nose discharge, weight loss, paralysis, death

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11
Q

how is trypanosomiasis diagnosed?

A

parasites in blood: concentration method

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12
Q

what is the progression of African tropanosomiasis?

A

blood to lymphatics to CNS to death

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13
Q

where does Trypanosoma congolense impact?

A

Africa: ruminants
nagana

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14
Q

who does Trypanosoma equiperdum impact?

A

equids, sexually transmitted, chronic
dourine

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15
Q

where are who do Trypanosoma vivax infect?

A

South America
cattle
tabanid vector

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16
Q

what does Trypanosoma cruzi cause?

A

Chagas’ disease: humans and rarely dogs

17
Q

what is the epidemiology of Trypanosoma cruzi?

A

zoonotic
infects many wild, domestic animals

18
Q

how is Trypanosoma cruzi transmitted?

A

Reduviid bugs
infectious trypomastigotes in feces

19
Q

what is the pathology of Trypanosoma cruzi in dogs?

A

amastigotes form pseudocysts in muscles, acute myocarditis
congestive heart failure

20
Q

what is the veterinary importance of Leishmania?

A

canine leishmaniasis

21
Q

what is the medical importance of Leishmania?

A

cutaneous, mucocutaneous, visceral leishmaniasis

22
Q

how is Leishmania transmitted?

A

sandfly vector (Phlebotomus, Lutzomyia)

23
Q

what are the reservoirs of Leishmania?

A

dogs
rodents

24
Q

where is Leishmania infantum important?

A

mediterranean basin

25
Q

what species of Leishmania is important in Central and South America?

A

Leishmania chagasi

26
Q

what are the clinical aspects of canine leishmaniasis?

A

peripheral lymphadenopathy
skin lesions
conjunctivitis
onychogryphosis

27
Q

how is canine leishmaniasis treated?

A

antimonials

28
Q

describe the life cycle of trypanosomes

A

multiplies in blood: binary fission
migrates to CNS
multiplies in tsetse fly
migrates to salivary gland
transforms to metacyclic form (infectious)

29
Q

what does Trypanosome cruzi do to the heart?

A

enlarged atria and ventricles

30
Q

what are some reservoirs of Trypanosome cruzi?

A

opossums
armadillos

31
Q

what skin lesions might you see with leishmania?

A

exfoliative dermatitis
cutaneous ulcers

General Parasitology (17 decks)

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