Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Parasitology > Protozoa: Apicomplexa - Heterogenous coccidia > Flashcards

Protozoa: Apicomplexa - Heterogenous coccidia Flashcards

1
Q

Name heterogenous coccidia:

A

Cystoisospora, Sarcocystis, Toxoplasma, Neospora

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

Genus Cystoisospora, name family and order:

A

Order: Eimerida
Family: Sarcocystidae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Cystoisospora of pigs causes:

A

Neonatal enteritis characterized by destruction of the villi of the small intestine epithelium
- widespread disease of piglets aged 8-15 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Characterize Cystoisospora suis:

A

3rd generation of meronts
Epithelium of small intestine, 3.-5. day after infection
Enteric syndrome: yellow-grey diarrhoea, acidic odour, watery without blood - death
Sporogony up to 16 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Cystoisospora in Russia and SPain:

A

Almaataenis (RUssia)
Neyrai (Spain)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Cystoisospora of dogs and cats causes:

A

Enteritis, diarrhoea, polyuria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Types of Cystoisospora in dogs and cats:

A

Cystoisospora felis - small inestine, oocyst 38-51 x 27-39 µm, prepatent 10-11 days
C. rivolta (cati) - small intestine
C. canis - caudal part of small intestine, oocyst 34-40 x 28-39 µm, prepatent per 9 days

C. ohioensis complex - ohioensis - Small intestine, cecum, colon
———’’——— - neorivolta - caudal part small intestine
———’’——— - burrowski - caudal part of small intestine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Characterize Cystosporosis of dogs and cats:

A

Rarely paratenic host (rodents
Sporogony is exogenous
Merogony and gamogony in epithelial cells of small intestine
PO infection
Resistant oocyst for more than 1 year
Anorexia, apathy, diarrhoea with mucus and blood, death

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Order and family of genus Sarcocystis:

A

Order: Eimerida
Family: Sarcocystidae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Sarcocystis is:

A

Heteroxenous cyst creating coccidia with indirect life cycle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Characterize Sarcocystis reproduction in man and carnivores:

A

Gamogony and sporogony in small inestine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Sarcocystis lifecycle in herbivores, omnivores and birds:

A

Excystation in small intestine –> merogony –> sporozoit –> endothelium of blood capillaries –> meront –> lymphocytes(?) –> 3rd gen of meronts –> muscles –> cyst –> bradyzoite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Sarcocystis cyst is a:

A

muscle cyst

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How many species are of Sarcocystis?

A

Approx. 90

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Name some species of Sarcocystis:

A

S. cruzi (bovicanis), S. hirsuta (bovihominis), S. ovicanis (tenella), S. arieticanis, S. gigantaea (ovifelis), S. medusiformis
S. capracanis (moulei), S. hircicanis
S. suicanis, S. porcifelis, S. suihominis (miescheriana), S. equicanis (bertrami), S. fayeri, S. horvathi, S. cuniculi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How to diagnose Sarcocystis:

A

DH - sporulated cyst in feces, flotation method
- 2 sporocysts/4 sporozoites, 14-15 x 9-10 µm
IH - serological test (IFAT, ELISA, IHAT)
- biopsy (histology)
- digestive method (microcyst < 1 mm)
- histology
- meat inspection (macrocyst 4-15 mm)

16
Q

Division by number of hosts:

A

Eimeria spp., Cryptosporidium spp - 1 host
Isospora spp. - paratenic host
Sarcocystis spp. and toxoplasma gondii - more hosts

17
Q

Which genera has endogenous sporogony?

A

Cryptosporidium spp. and Sarcocystis spp.

18
Q

What causes protozoan myeloencefalitis of horses?

A

Sarcocystis neurona

19
Q

Hosts of Sarcocystis neurona:

A

IH: raccoon, armadillo, skunk, feline etc.
DH: possum

20
Q

Neospora caninum hosts:

A

IH: eq, cow - abortion
DH: dog

21
Q

Toxoplasma gondii hosts:

A

DH: domestic cat, wild felids
IH: mammals and birds

22
Q

Reproduction of toxoplasma gondii:

A

Small inestine (schizogony and gamogony)
Nonsporylated oocyst is shed by felids into environment. Sporolated oocyst in environment.

23
Q

Tachyzoites (T. gondii) in various tissues are:

A

pseudocyst

24
Q

Tissue cysts are called (T.gondii):

A

bradyzoites
- myocard, CNS, skeletal muscles

25
Q

T. gondii can be transmitted by:

A

Transplacental (vertical) transmission

26
Q

Infection with tachyzoites and bradyzoites through:

A

Tachyzoites: raw goat milk
Bradyzoites: raw meat and meat products
Sporolated oocysts: soil (vegetables) and contaminated water

27
Q

Toxoplasmosis in humans causes:

A

Immunocompetent individuals: asymptomatic, lymphadenopathy
Immunocompromised (HIV, organ transplants): encephalitis, pneumonia, vision problems
Pregnant women: abortions, hydrocephalus, uveitis

28
Q

Toxoplasmosis in animals causes:

A

Reproduction problems in sheep and goats.
Acute fatal toxoplasmosis in pallas cats, marsupials, lemurs, new world apes, brown hare

29
Q

Diagnostics of toxoplasma:

A

DH: flotation method - oocysts 12x10µm
2 sporocysts | 4 sporozoites
(Cat only shed oocyst during primoinfection for 21 days!!)
IH: serology (Sabin-Feldmann dye test, CFR, IFAT, ELISA, latex agglutination), biological assay (mice, cat), PCR
Genotyping genotypes I, II, III

30
Q
A

Parasitology (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions