Lesson 2a; staphylococcus species

Question 1

in characteristic ‘bunches of grapes’ formations

Answer 1

STAPHYLOCOCCI

Question 2

staphylococcus a. in cattle cause what?

Answer 2

mastitis

Question 3

s. hyicus in cattle cause what?

Answer 3

1. mastitis

Question 4

s. aureus subsp. anaerobius in sheep causes what?

Answer 4

lymphadenitis

Question 5

pyogenic characteristics causes what?

Answer 5

suppurative lesions

Question 6

staphylococcal cell wall protein, which binds to this 2 ________ facilitate bacterial attachments to tissues

Answer 6

fibronectin & fibrinogen

Question 7

what are the 3 structural features that interefere with opsonization & subsequent phagocytosis

Answer 7

1. polysaccharide
2. teichoic acids
3. protein a

Question 8

_____ this production aids in survival within phagocytosis.

Answer 8

catalase production

Question 9

_____ has a role in shielding the organism from phagocytic cells

Answer 9

coagulase

Question 10

what are the 2 exoenzymes that promote tissue invasion

Answer 10

kinases & hyaluronidase

Question 11

staphylococcal disease of importance in domestic animals include 5 diseases, what are those? remember: pymatiboex

Answer 11

1. pyoderma
2. mastitis
3. tick pyaemia
4. bortryomycosis
5. exudative epidermitis

Question 12

an s. aureus disease, most often causes subclinical infection; virulence factor is alpha toxin that result to tissue necrosis & can be life threatening. What type of disease has this clinical infections?

Answer 12

BOVINE STAPHYLOCOCCAL MASTITIS

Question 13

what is the diagnosis & treatment of anaplasma phagocytophilum ?

Answer 13

dx. Bacterial confirmations
tx. tatracyclines & tick control

Question 14

s. aureus in horses; a chronic, suppurative granulomatous that occur within a few weeks after castration due to infection of the stump of the spermatic cord; can also occur in mammary tissues of sows. What kind of disease is this.

Answer 14

Botryomycosis

Question 15

dogs with wound infections, surgical site infections, pyoderma, otitis & urinary tract infections are most commonly reported; common cause of nasocomial infection in vet hospitals.

Answer 15

Methicillin-resistant staphylococcal infections in animals

Question 16

In lambs they carry S. aureus in what location of their body?

Answer 16

1. Skin
2. Nasal mucosa
3. Infection occurs through minor skin trauma

Question 17

what are the 2 microorganisms that can cause tick pyaemia:

Answer 17

1. Ixodes ricinus
2. Anaplasma phagocytophilum

Question 18

is a vector for the rickettsial agent of tick-borne fever

Answer 18

Ixodes ricinus

Question 19

this can cause immuno suppression in lambs & may predispose to staphylococcal infection.

Answer 19

Anaplasma phagocytophilum

Question 20

Tick pyaemia is characterized by either :

Answer 20

1. septicaemia
2. rapid death
3. localized abscess

Question 21

what is the diagnosis used in tick pyaemia?

Answer 21

Bacterial confirmations

Question 22

what can be the treatment for tick pyaemia?

Answer 22

1. Tetracyclines
2. Tick control

Question 23

S. hyicus occurs in sucklers & weaned pig, it’s highly contagious, & can be isolated from the vaginal mucosa & skin of healthy sows.

Answer 23

Exudative epidermitis (Greasy pig disease)

Question 24

S. hyicus of exudative epidermitis enter to this location:

Answer 24

Skin of young pigs through minor abrasions as bite wounds

Question 25

Exudative dermatitis can be characterized by:

Answer 25

1. Greasy exudate 2. Exfoliation 3. Exudation on skin.

Question 26

is the major virulence factor of exudative epidermitis as injection of this toxin into the skin of young pigs produces exfoliation?

Answer 26

Exfoliative toxin

Question 27

2 dx of exudative epidermitis

Answer 27

1. Isolation 2. identification of bacteria from dermal lesions

Question 28

tx of S. hyicus in exudative epidermitis

Answer 28

Antibacterial therapy

Question 29

what are the lesions of staphylococcus species:

Answer 29

1. Skin scrapping 2. Swab sample

Question 30

what is the exudates in staphylococcus species:

Answer 30

1. Mastitis milk

Question 31

What can be used in the demonstration of bacteria:

Answer 31

1. Gram staining 2. Culture on blood agar 3. Selective blood agar 4. MacConkey agar

Question 32

6 identification criteria use in staphylococcus species;

Answer 32

1. Colonial characteristics 2. Presence or Absence of haemolysis 3. Absence of growth on MacConkey agar 4. Catalase production 5. Coagulase production 6. Biochemical profile

Question 33

molecular typing use here is ?

Answer 33

PCR procedures

Question 34

this 2 differs in all Staphylococcus species because they are anaerobic & catalase-negative

Answer 34

1. S. aureus subsp. anaerobius 2. S. saccharolyticus

Question 35

Colonies of this 2 produce double haemolysis:

Answer 35

1. S. aureus 2. S. pseudointermedius

Question 36

2 exotoxins lyse host cell membranes.

Answer 36

1. haemolysis 2. leukocidin