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Bacto > chlamydia, rickettsia > Flashcards

chlamydia, rickettsia Flashcards

1
Q

is chlamydia obligate intracellular

A

yes

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2
Q

two morphological forms of chlamydia

A

elementary body

reticulate body

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3
Q

what makes up the outer membrane of chlamydia

A

genus specific LPS

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4
Q

chlamydia habitat

A

mucus membranes - gut, genital, resp

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5
Q

type of infection of chlamydia

A

persistant, subclinical

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6
Q

time taken for propagation cycle of chlamydia

A

48-72hrs

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7
Q

chlamydia morphology

A

small coccoid rod

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8
Q

how can we stain chlamydia

A

stamp, giemsa

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9
Q

why cant we culture clamydia on agar

A

bc their obligate intracellular - need living cells

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10
Q

possible ways to culture clamydia

A

5-7day old embryonated egg
tissue culture
animals

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11
Q

where does chlamydia replicate

A

vacuoles of cells

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12
Q

genus specific chlamydia antigens

A

LPS

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13
Q

species specific chlamydia antigens

A

protein Ags

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14
Q

which morphological form of chlamydia has the better resistance

A

elementary

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15
Q

how long can clamydia survive in dust

A

1-3weeks

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16
Q

chlamydia species that affect only humans

A

c trachomatis, c pneumoniae

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17
Q

chlamydia species that infect both animals and humans

A

c psittaci, c abortus

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18
Q

chlamydia species that infect only animals

A

c felis, c precorum

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19
Q

c psittaci species

A

birds, lots of mammals, humans

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20
Q

c psittaci disease in birds

A

conjunctivitis, diarrhoea, resp infection

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21
Q

c abortus disease

A

abortion in sheep, cattle, goat, and pig

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22
Q

c felis disease

A

cat conjunctivitis

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23
Q

c pecorum disease

A

arthritis, pneumonia, encephalomyelitis in ru

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24
Q

c pneumoniae

A

human pneumonia

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25
Q

two families of rickettsiales

A

rickettsiaceae

anaplasmataceae

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26
Q

whats in the cell wall of rickettsiaceae family

A

peptidoglycan layer

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27
Q

rickettsiaceae family genus

A

coxiella
ehrlichia
rickettsia
neorickettsia

28
Q

coxiella genus species

A

c burnetii

29
Q

ehrlichia genus species

A

e canis

e ruminatum

30
Q

rickettsia genus species

A

r rickettsii
r prowazekii
r sibirica
r conorii

31
Q

neorickettsia genus species

A

n risticii

32
Q

anaplasma species

A 
a marginale
a centrale
a bovis
a ovis
a phagocytophilum
33
Q

rickettsiales habitat

A

obligate cell parasites, arthropod vectors, small rodents

34
Q

rickettsiales morphology

A

coccoid rods, non motile

35
Q

rickettsiales staining

A

difficult, giemsa, koster, stamp

36
Q

rickettsiales culture

A

living cells

embryonated eggs, cell culture, animals

37
Q

rickettsiales how are they classified

A

cell tropism, intracellular or extracellular propagation, vector

38
Q

rickettsiales genera that can propagate in all cell types

A

rickettsia, coxiella

39
Q

rickettsiales genera that can propagate in lymphoid and endothel cells

A

ehrlichia, neorickettsia

40
Q

rickettsiales genera that can propagate only in or on erythrocytes, and in lymphoid cells

A

anaplasma

41
Q

rickettsia genus habitat

A

reservoir - rodents and arthropods

42
Q

rickettsia genus pathogenicity

A

r prowazekii
r rickettsii
r sibirica
r conorii

43
Q

r prowazekii disease

A

epidemic typhus fever - louse

44
Q

r rickettsii disease

A

rocky mountain spotted fever - ticks

45
Q

r sibirica disease

A

north-asian tick borne rickettsiosis - ticks

46
Q

r conorii disease

A

boutouneuse-fever - ticks

47
Q

c burnetii culture

A

embryonated eggs, also obligate intracellular

48
Q

c burnetii resistance in dust

A

50 days

49
Q

c burnetii are vectors needed

A

no

50
Q

c burnetii disease

A

Q fever

51
Q

ehrlichia and neorickettsia morphology

A

coccoid

52
Q

ehrlichia and neorickettsia culture

A

tissue cultures

cannot be cultured in embryonated eggs

53
Q

e canis disease

A

canine monocytic ehrlichiosis

54
Q

e ruminatium disease

A

heartwater of ru

55
Q

neorickettsia risticii disease

A

potomac horse fever

56
Q

anaplasma genus habitat

A

ticks, ru

57
Q

anaplasma genus culture

A

no possible in vitro, no cell wall

58
Q

a marginale disease

A

cattle anaplasmosis, tropical and subtropical countries

59
Q

a ovis disease

A

sheep, goat anaplasmosis

60
Q

a phagocytophilum disease

A

tickborne fever of ru, equine granulocytic ehrlichiosis

61
Q

bartonella genus species

A

b henselase - cat scratch disease

62
Q

bartonella genus staining

A

Gr-

63
Q

bartonella genus morphology

A

slightly curved rods

64
Q

bartonella genus culture

A

blood agar, 3-4wks

65
Q

cat scratch disease incubation time

A

1-3wks

Bacto (19 decks)

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