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Para Labs > Para Lab 6 Notes > Flashcards

Para Lab 6 Notes Flashcards

1
Q

causative agent of hepatozoonosis

A

hepatozoon canis

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2
Q

is hepatozoonosis heteroxenous or homoxenous?

A

obligate heteroxrnous

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3
Q

what is the biological vector of hepatozoon canis

A

Rhipicephalus sanguineus

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4
Q

symptoms / clinicial signs of hepatozoonosis

A

frequently asymptomatic

lethargy, fever, anorexia, anaemia, swelling of LN, lachrymation, nasal discharge.

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5
Q

in what cells can we find hepatozoons

A

neutrophil granulocytes

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6
Q

in what form can we find hepatozoon in neutrophil granulocytes

A

gamont

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7
Q

what type of ssample is required for a parasitological diagnosis of hepatozoon?

A

blood smear

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8
Q

what size are the gamonts of hepatozoon in neutrophil grnaulocytes?

A

10 - 12 um elliptical

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9
Q

what size is hte schizont of a hepatozoon

A

50 - 100um

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10
Q

what type of wall and locaiton of nuclei in the schizont of a hepatozoon?

A

unilaminar wall
nuclei on the peripehery

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11
Q

babesia species found in equine

A

babesia caballi

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12
Q

babesia species found in cattle

A

b divergens - zoonotic
b bovis
b bigemina
b major

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13
Q

babesia species found in canine

A

b canis
b vogeli
b gibsoni

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14
Q

what is the most zoonotic species of babesia

A

b divergens

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15
Q

in what species can abortion occur in babesiosis infection

A

cattle

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16
Q

what species does hemoglobinuria not occur in for babesiosis infection

A

does not occur in horses in hte case of b caballi

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17
Q

what symptoms occur in digs in hte case of babesiosis infection

A

keratitis
iridocyclitis
nervous signs

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18
Q

what are the signs of chronic babesiosi infection

A

intermittent fever for several months
gradual emaciaiton
anaemia

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19
Q

babesiosis form found in RBCs

A

piroplasms

20
Q

what staining is used to detect babesia piroplasm in RBCs

A

giemsa staining
red nucleus, blue cytoplasm.

21
Q

typical appearance of ‘small babesia’

A

b divergens
<3um
typically appear as a paired near edge of the cell

22
Q

typical appearance of ‘large babesia’

A

b . bigemina
3 - 5um
paired at acute angle in RBCs

23
Q

shape of babesia species

A

pyriform
round
elongated
cigar shaoed

24
Q

necropsy findings of babesiosis infection

A

sub-epicardial and sub-endocardial haemorrhages
red abd brownred urine in bladder
catarrh and petechiae in GI mucosa

25
Q

theileria soecies tyhat infects horses

A

T. equi

26
Q

theileria species that infects cattle

A

t annulata

27
Q

clinical signs of theileria infection

A

digestive problems - rumination abandoned
diarrhoea with mucos and blood
swelling of LN
petechial haemorrhages on vulva and under tongue

28
Q

what for of theileria are found in LN

A

schizonts of theileria
use Giemsa staining

29
Q

what form of theileria is found in lymphocytes

A

KOCHs bodies
12um
in cytoplasm of lymphocytes

30
Q

what form of theileria can be found in RBCs

A

merozoites can be found in RBCs

31
Q

what is the size and shape of theileria merozoites

A

0.5 - 2.7um
rod shaped
blue

also have round, oval, ring-shaped forms

32
Q

what are the necropsy findings related to theileria infection

A

haemorrhages in serous and mucous membranes
swelling of LN and spleen
ulcers in abomasum and intestine
pulmonary oedema

33
Q

in the case of theileria infection where can haemorrhages be found

A

serous and mm

34
Q

in the case of a theileria infeciton where can ulcers be found

A

abomasum and intestine

35
Q

in what species is encephalozoonosis mainly found

A

MAMMALS
encephalitozoon cuniculi

36
Q

what species of mammal can we mainly find encephalitozoonosis infection

A

rabbit

37
Q

what symptoms of encephalitozoonosis can occur in rabbits

A

torticollis
wry neck
paralysis
seizures

38
Q

what symptoms of encephalitozoonosis can occur in fox and dog

A

keratitis
night blindness

39
Q

size of shape of encephalitozoon spores

A

1.5 - 2.5um elliptic or oval

40
Q

where can we find encephalitozoon spores in rabbits

A

urine

41
Q

if spores of encephalitozoonosis are expected what staining method can we sue

A

indian ink rxn
IIR

ink particles adhere to spores on slide

42
Q

if antibodies are expected to be found in serum of animals infected with encephalitozoonosis what test can be used

A

oil immersion method

43
Q

what can be found on the surface of kidneys of dogs and rabbits infected with encephalitozoonosis

A

2 - 4mm greyish dents

44
Q

in the case of encephalitozoonosis infection what histological findings can be found in the kidneys

A

chronic interstitial nephritis

45
Q

in the case of encephalitozoonosis infection what histological findings can be found in the brian

A

multifocal granulomatous encephalitis

perivascular infiltration by lymphocytes
necrotic foci surrounded by macrophages

46
Q

what staining can be used to detect encephalitozoonosis

A

PAS
Gr +
ZN

Para Labs (5 decks)

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