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Parasitology quiz 2 > protista 4 > Flashcards

protista 4 Flashcards

(52 cards)

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1
Q

toxoplasma taxonomy

A 
kingdom- protistis
class- sar- eukaryotes
order- alveolata
family- apicomplexa
group- conoidasida
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2
Q

toxoplasma life cycle

A

facultative heteroxenous life cycle (can be single host or multiple)

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3
Q

toxoplasma gondii intermediate host

A
  • birds
  • rodents
  • pigs
  • sheep
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4
Q

toxoplasma gondii final host

A
  • cat

- human

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5
Q

toxoplasma gondii life cycle

A
  • Unsporulated oocysts shed in cat feces -> Sporulate in environ & become infective -> Intermediate hosts (birds, rodents) ingest contaminated soil, water, plants -> Transform into tachyzoites after ingestion -> Become tissue cyst bradyzoites in neural & muscle tissue -> Cats ingest intermediate hosts and get infected or can also get infected by directly ingesting oocysts from environ
  • Pigs & sheep can also ingest cysts in environ then infect ppl
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6
Q

toxoplasma gondii transmission cat

A

Oocysts shed in feces of cats that can cause enteric infection & oocyst production in other cats or infect other vertebrates causing visceral infection w/ small cysts

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7
Q

toxoplasma gondii transmission from environment/ medical

A
  • Ppl can ingest oocysts from soil, vegetables, undercooked meat, blood transfusion & transplants
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8
Q

toxoplasma gondii transmission pregnancy

A
  • Mothers only transmit to fetus if being infected for very first time while pregnant
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9
Q

toxoplasma gondii can be transmitted in what ways broadly

A
  • cat -> cat/ other vertebrate
  • oocysts in soil/ veggies/ undercooked meat/ blood transfusion and transplants -> ppl
  • pregnant mother -> fetus
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10
Q

toxoplasma gondii organ effected

A

-neuro and muscle cysts

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11
Q

toxoplasma gondii organ effected ppl

A
  • tissue cysts in skeletal muscle, myocardium, brain, eyes
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12
Q

toxoplasma gondii dx newborn

A

Severe disease to newborn infants infected in utero (miscarriage, hydro-cephalus, blindness, mental disability)

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13
Q

toxoplasma gondii chronic infection

A
  • Chronic infection w/ bradyzoites (asymp-tomatic)
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14
Q

toxoplasma gondii acute dx

A
  • Acute disease w/ multiple tachyzoites after first exposure (flu like symptoms)
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15
Q

toxoplasma gondii re-crudence

A
  • Re- crudescence (reactivation of bradyzoites into tachyzoites )
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16
Q

toxoplasma gondii dx general

A
  • severe dx to newborn
  • chronic infection
  • acute dx
  • re-crudescence
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17
Q

toxoplasma gondii location

A

everywhere there are cats

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18
Q

toxoplasma gondii infection and timing of pregnancy

A

transmission to fetus less common when infection occurs early in pregnancy but damage to fetus is greater the earlier in pregnancy It occurs

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19
Q

toxoplasma gondii frequency of spread from mother to fetus

A
  • just as common as his, cystic fibrosis, ect from mom to fetus
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20
Q

Neospora taxonomy

A 
kingdom- protistis
class- sar- eukaryotes
order- alveolata
family- apicomplexa
group- conoidasida
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21
Q

toxoplasma gondii taxonomy

Study These Flashcards
A 
kingdom- protistis
class- sar- eukaryotes
order- alveolata
family- apicomplexa
group- conoidasida
22
Q

neospora caninum taxonomy

Study These Flashcards
A 
kingdom- protistis
class- sar- eukaryotes
order- alveolata
family- apicomplexa
group- conoidasida
23
Q

neospora caninum final hosts

Study These Flashcards
A

dogs/ other canids

24
Q

neospora caninum intermediate host

25
neospora canunum final and intermediate host in the wild
coyotes are final host and deer are intermediate host in wild
26
neospora caninum transmission
dogs ingest tissue cysts in beef then pass oocyts in their feces
27
neospora caninum dx
- abortion in cattle - if not aborition chronically infected calf that can then pass dx when they're pregnant - neuro dx in dogs (posterior flaccid paralysis in puppies)
28
neospora caninum tx
clindamycin helps w/ clinical signs but does not get rid of parasite in dogs
29
neospora hughesi taxonomy
``` kingdom- protistis class- sar- eukaryotes order- alveolata family- apicomplexa group- conoidasida ```
30
neospora hughesi host
horse
31
hepatozoon taxonomy
``` kingdom- protistis class- sar- eukaryotes order- alveolata family- apicomplexa group- conoidasida ```
32
hepatozoon lifecycle
- sexual replication in gut of tick -> production of oocyts with infective sporozoites - dogs infected by ingesting tick or eating paratenic host
33
hepatozoon transmission
tick infected by taking blood meal that has neuts and monocytes harboring parasitic gamonts
34
hepatozoon dx
dogs have schizonts in various tissues then gamonts finally go to wbcs
35
hepatozoon canis taxonomy
``` kingdom- protistis class- sar- eukaryotes order- alveolata family- apicomplexa group- conoidasida ```
36
hepatozoon canis intermediate host
dogs
37
hepatozoon canis final host
rhipicephalus sanguines (brown dog tick) final host
38
hepatozoon canis life cycle
Tick ingests leukocytes containing gamonts -> Sexual repro, zygotic meiosis, sporogony in tick -> Intermediate hosts (dogs) ingest ticks -> Oocysts rupture, release sporocysts that excyst in presence of bile, releasing infectious sporozoites -> Invade host cells
39
hepatozoon canis organ effected
subclinical infections, gammons usually found in peripheral blood
40
hepatozoon canis location
worldwide
41
hepatozoon canis meronts
seen in mult organs of body not seen in dogs in us
42
hepatozoon americanum taxonomy
``` kingdom- protistis class- sar- eukaryotes order- alveolata family- apicomplexa group- conoidasida ```
43
hepatozoon americanum final host
amblyomma maculate (gulf coast tick)
44
hepatozoon americanum intermediate hosts
dogs
45
hepatozoon americanum paratenic hosts
rodens w/ cystozoites
46
hepatozoon americanum reserviours
coyotes
47
hepatozoon americanum life cycle
-> Merogony (asexual multiplication) -> Meronts mature, rupture, give rise to gamonts that circulate in blood -> Ingested by ticks
48
hepatozoon americanum alt pathway to ingestion
- Paratenic host can instead ingest the tick then dogs eat the paratenic host
49
hepatozoon americanum dx
- severe dx in dogs - marked neutrophilic leukocytosis, significant joint pain from periosteal proliferation - sometimes hurts so much they don't eat and die of starvation
50
hepatozoon americanum location
united states
51
hepatozoon americanum necropsy
onion skin schizonts when examine muscle tissue on necropsy
52
hepatozoon americanum txs
no effective treatments but anti-parasitics should be used

Parasitology quiz 2 (7 decks)

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