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MY Bacteriology FINAL > Brachyspira > Flashcards

Flashcards in Brachyspira Deck (28):
1

Brachyspira and Treponema are known as ____

spirochetes 

2

Brachyspira belongs to the family ____ and are obligate _____

family Spirochaetaceae

Obligate anaerobes 

3

what part of the body does Brachyspira colonize?

large intestine 

*mainly colon 

4

What is the most important species of Brachyspira?

Brachyspira Hyodyseneriae 

5

What does Brachyspira hyodysenteriae cause and in what animal?

Swine Dysentery 

*affects actively growing pigs 

6

What makes the Brachyspira cell wall different?

has a lipo-oligosaccharide 

7

Brachyspira contains Hemolysin. The more ____ the bacteria, the more chance that it will be associated with bad disease

hemolytic 

8

Brachyspira Hyodysenteriae is strongly ____ hemolytic

beta

9

What virulence factor is necessary for Brachyspira and allows the bacteria to move through intestinal mucosa?

flagella 

10

What are the most important reservoir for Brachyspira hyodysenteriae?

asymptomatic carrier pigs 

11

How is Brachyspira transmitted?

fecal-oral

12

what is the pathogenesis for Brachyspira?

edema, hypermia, hemorrhages

if the infection is bad enough it can lead to failure of colonic absorption

13

What is the major clinical sign of Brachyspira?

Diarrhea

*normally bloody because of damage to enterocytes 

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14

What are the differentials for Brachyspira Hyodysenteriea that are hard to differentiate?

Salmonellosis and Lawsonia intracellularis

15

What species of Brachyspira causes avian intestial spirochaetosis?

B. pilosicoli

16

Fecal samples for diagnosis of Brachyspira should not be allowed to ___

dry out 

17

What is the special blood agar for Brachyspira?

BJ agar

*specific agar with several antibiotics incoorporated 

18

The more virulent the strain of Brachyspira, the more ____ on blood agar 

hemolytic

19

What disease does Lawsonia Intracellularis cause?

proliferative enteropathy 

*in many different species, but mainly porcine

20

Lawsonia intracellularis are ____intracellular pathogens of enterocytes

obligate

21

What type of secretion system does Lawsonia have?

Type 3

22

What are the reservoirs for Lawsonia?

intestinal tract and environment

23

How is Lawsonia transmitted?

fecal oral route

24

what is requires for Lawsonia to be infective?

interaction with unknown natural flora are required for disease 

*If the animal has no bacteria in the GI tract then Lawsonia cannot cause disease

25

Lawsonia inhibits the host cell ____ process

maturation 

*leads to more bacterial cells and proliferative lesions in the enteric mucosa 

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26

What antibody is predominant in Lawsonia infections?

IgA 

27

True/False: vaccines work well against Lawsonia

True

*vaccines and antibiotics are effective against lawsonia 

28

What bacteria causes rabbit syphilis?

Treponema Paraluiscuniculi