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bacteriology > gram pos part 2 > Flashcards

gram pos part 2 Flashcards

(85 cards)

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1
Q

nocardia asteroides in dogs disease

A

canine nocardiosis

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2
Q

nocardia asteroides in cattle

A

chronic mastitis and abortion

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3
Q

what causes bovine farcy in cattle

A

nocardia farcinica

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4
Q

what is the cahracteristic of nocardia on sabouraud dextrose agar

A

colonies are orange coloured and wrinkled

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5
Q

virulence factor of nocardi

A

mycolic acid, nocardial lipids and superoxide dismutase

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6
Q

pathogenesis of nocardia

A

transmitted through inhalation, ingestion, and skin wounds. infection begins as a nodule or pustule that ruptures and there will be suppuration with subsequent induration

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7
Q

it has the ability to survive within phagocytic vacuoles by preventing phagolysosome formation

A

nocardia

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8
Q

treatment of nocardia

A

surgical debridement and drainage of lesions
antimicrobials like trimethoprim

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9
Q

trimethoprim antimicrobials

A

sulfamethoxazole, sulfanamide, erythromycin

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10
Q

the only species in the genus nocardia, and maintain itself in small foci of infection on a carrier animal or material within scab particles in dust

A

dermatophilus congolensis

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11
Q

transmission of d. congolensis

A

direct contact, splashing effect of heavy rains, insect activity

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12
Q

virulence factor of d. congolensis

A

keratinolytic activity

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13
Q

an activity that resists phagocytosis by growing into aggregates or filaments sufficiently enough to discourage ingestion

A

keratinolytic

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14
Q

pathogenicity of d. congolensis

A

causes skin infection

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15
Q

disease caused by d. conglensis

A

strawberry footrot, lumpy wool or rainscald streptothricosis, dermatophilosis and grease heal

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16
Q

specimen of d. congolensis

A
  • a tuft of hair is plucked from the lesion with scab material adhering to it
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17
Q

what stain is used in d. congolensis

A

gram or giemsa

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18
Q

prevention of d. congolensis

A

grazing areas are cleared of throny scrub and tick infestation should be reduced by dipping to acaricides

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19
Q

treatment of d. congo

A

long acting oxytetracyclines, penicilllin, streptomyces

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20
Q

opportunistic pathogen of young foals with 2 morph. forms

A

rhodococcus equi

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21
Q

has mucoid salmon pink colonies

A

rhod

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22
Q

can survive and replicate intracellularly, mostly within mononuclear phagocytes

A

rhod

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23
Q

for persistent infection in severely immunodefficient mice

A

VApA

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23
Q

virulence factor of rhod

A

interference with endosomal maturation following phagocytosis and suppressing the acidification.
capsule
prod. of phospholipase c and cholesterol oxidase

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24
Pathogenesi of Suppurative bronchopneumonia in foal
airosolized virulent R .equi inhaled through dust→ reached the lungs and alveoli→ survive and replicate inside alveolar macrophages→ necrosis of macrophage→ pyogranulomatous lesions in the lungs
25
When cough up and swallowed in large numbers, the bacteria enter M cells of the intestine and cause pyogranulomas in GALT and intestinal lymph nodes
rhod equi enteritis
26
specimen in rhod
tracheal wash or aspirates for culture
27
colonial morph of rhod
colonies are small, smooth, shiny, and non- hemolytic after 24h of incubation,
28
colonial morph of rhod as it ages
larger, mucoid, salmon pink in color
29
in camp, it shows shovel effect against S. aureus; enhancement of staphylococcal beta hemolysin
rhod
30
control and prevention of rhod
vaccination of vapA removal of feces disinfect the soil
31
catalase positive, oxidase negative, faculattive anaerobes
coryne and listeria
32
vir factor of corynebacterium pseudotuberculosis
attributed to the hemolytic toxin which has phospholipase activity to the cell wall lipids
33
e pyogenic bacteria causing a variety of suppurative conditions
corynebacteria
34
transmission of c. pseudotuberculosis
contamination of shearing, docking wounds and through arthropods bites or contaminated dips
35
characterized by the lamellar ("onion-ring") appearance containing yellow- green viscous pus with a toothpaste-like consistency
lymph node in corynebacteru=ium
36
specimens of corynebacterium
pus or exudates, midstream urine
37
(Chinese letter appearance
coryne
38
isolation in coryne
sheep or ox blood agar
39
colonial morph of c. bovis
small white dry non hemo
40
colonial morph of c. kutscheri
small, whitish colonies that bear a resemblance to those of C.pseudotuberculosis. Occasional strains are haemolytic
41
colonial morph of c. pseudotuber
small, white, dry colonies surrounded by a narrow zone of haemolysis after 48-72h of incubation
42
disease caused by c. bovis
subclinical mastitis in teat cistern
43
c renale and pilosum in cattle disease
cystitis, pyelonerphritis
44
treatment and control of coryne
since antibiotic is ineffective, culling or segregation and bacterin toxoid is reco
45
small gram pos rods found in herbage and fresh water which may be present in feces and sewage effluent
listeria
46
what ph level is tolerated by listeria
5.5 to 9.6
47
motile at 25C with tumbling movement
listeria
48
what causes meningoencephalitis in sheep
listerai innocua
49
has the ability to invade both phagocytic and non-phagocytic cells
l. monocytogenes
50
Able to replicate intracellularly and to transfer from cell to cell without exposure to humoral defense mechanisms
listeria
51
small transparent colonies with smooth borders appear on blood agar in 24 hrs, becoming greyish white and 0.5-2.0 mm in diameter in 48 hrs.
colonial appearance of listeria
52
produces wide zone of hemolysis
l. ivanovii
53
produces narrow zone of hemolysis
l. monocytogenes
54
(aggregartion of leukocytes on the perivascular space)
perivascular cuffing
55
isolation of listeria
ox or sheep agar macconkey selective media
56
in l. monocytogenes, how do we observe its tumbling motility
hanging drop ethod
57
–umbrella-shaped, sub surface growth in semi- solid motility medium
listeria spp
58
Intraperitoneal inoculation of listeris to mice
death within 5 days with necrotic lesions in the liver
59
prevention and control of listeria
active immunization with viable l. mono use of good quality low ph silage
60
serious invasive disease that primarily afflicts pregnant women, neonates and immunocompromised adults.
listeriosis
61
The causative organism, Listeria monocytogenes, is primarily transmitted to humans through
contaminated foods
62
smooth form of erysipelothrix rhusiopathiae
gram pos slender rods
63
up to 50% of pigs are carriers of what
erysipelothrix rhusiopathiae
64
coagulase positive and h2s isproduced
erysipelothrix rhusiopatjiae
65
causes septicemia, diamond lesions, chronic arthritis, chronic valvular endocarditis in pigs
erysipelothrix rhusiopathiae
66
-widespread in the environment with proliferation in organic matter
erysipelothrix rhusiopatjiae
67
-animal and bird, slime layer of fish, commonly associated with pigs (soil and slurry of piggeries), feces and tonsils of carrier pigs
erysipelothrix rhusiopathiae
68
virulence factors of erysipelothrix rhusiopathiae
neuraminidases hyaluronidase inflammatory cytokines capsules
69
acute form of disease of erysipelothrix rhusiopathiae
speticemic and cutaenous form
70
chronic form of disease in ery
arthritis and vegetative endocarditis
71
raised ,rhomboid, reddish ,purpluish lesion (diamond-shaped lesions are pathognomonic) encircled in red
swine erysipelas
72
transmission of ery
ingestion of contaminated material, wound infections, and arthropod bites
73
localized cellulitis)
erysipeloid
74
skin ulcers, painful, erythematous, but not purulent (encircled in green)
erysipeloid
75
what bacteria is zoonotoc
erys`
76
specimens in erys
liver kideny spleen heart and synovial fluid
77
what morph of erys is seen in acute cases
rodsh
78
what morph of erys is seen in chronic cases
filamentous
79
isolation of erys
sheep of blood agar
80
medium used for isolation of erys
selective medium that contains sodium azide, and crysrtal violet (Natellurite)
81
what to observe in erys in Nutrient agar at room temp for 5 days
bottle brush pattern of growth
82
prevention an dcontrol of erys
>proper disposal of infected carcass >isolate and introduce replacement animals into the herd at least 30 days into the herd >good sanitation and nutrition
83
treatment of erys
penicillin, tetracycline, tylosin
84

bacteriology (8 decks)

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