Non Spore Forming Obligate Anaerobes Flashcards Preview

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Flashcards in Non Spore Forming Obligate Anaerobes Deck (19):
1

True/False: non- spore forming anaerobes can survive for long periods of time in the environment

False

Only can survive a few days 

2

Non spore forming anaerobes are usually part of _____

normal flora 

*Normal inhabitants of the GI tract 

3

These bacteria create necrotic areas in the animal as well as ____ production 

pus 

4

True/False: Capsule and cell wall helps the bacteria to grow inside the host to avoid some innate immune responses and produce necrotic areas that are useful for them to surivive

True 

5

Gram negatives have ____ in their cell wall, while Gram positive organisms have ____ in the cell wall 

Gram negative- LPS

Gram positive- Peptidoglycan 

6

Pathogenesis of non spore forming anearboes

1. Find injury in the foot area, colonize and start producing lesions

2. Reduction of oxygen in tissue 

3. Synergistic repsonse between these bacteria and facultative anaerobes 

7

What are of the body do non spore forming anaerobes normally infect?

Feet

8

Non spore forming anaerobes are ____ anaerobes 

obligate

*Why they infect the feet because it has low oxygenation

9

Best to use ____ containing media 

blood 

10

Treatment for non spore forming anaerobes 

drainage and use of antimicrobial agents 

11

Dichelobacter nodosus and Fusobacterium necrophorum are the causative agents of ____

Footrot in sheep and goats

*lesions causing crippling lameness 

(moreso Dichelobacter)

12

Dichelobacter Nodosus and Fusobacterium are gram _____

negative 

13

Fusobacterium necrophorum is an important causative agent of liver abscesses, necrotic rhinitis, and diphteria in what species?

Bovines 

14

Pathogenesis of Foot Rot 

1. interdigital epidermis is damaged 

2. inflammation and necorsis of the foot

3. lameness of feet. Affected animals cannot walk

(secondary infection can occur with D. nodosus or F. necrophorum)

A image thumb
15

Fusobacterium necrophorum can also cause abscesses in what organ of the body?

liver 

16

What can the farmer use to help prevent foot rot?

water baths

 

17

Foot rot is more common in areas that are ___ all the time 

wet

18

What will you see if you look at Dichelobacter nodosus under the microscope?

Gram negative with swollen ends at both sides 

A image thumb
19

What is the best treatment for Fusubacterium necrophorum?

Clean the area well and give systemic antibiotics 

Try to keep animals dry