Non Spore Forming Obligate Anaerobes Flashcards
True/False: non- spore forming anaerobes can survive for long periods of time in the environment
False
Only can survive a few days
Non spore forming anaerobes are usually part of _____
normal flora
*Normal inhabitants of the GI tract
These bacteria create necrotic areas in the animal as well as ____ production
pus
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
Gram negatives have ____ in their cell wall, while Gram positive organisms have ____ in the cell wall
Gram negative- LPS
Gram positive- Peptidoglycan
Pathogenesis of non spore forming anearboes
- Find injury in the foot area, colonize and start producing lesions
- Reduction of oxygen in tissue
- Synergistic repsonse between these bacteria and facultative anaerobes
What are of the body do non spore forming anaerobes normally infect?
Feet
Non spore forming anaerobes are ____ anaerobes
obligate
*Why they infect the feet because it has low oxygenation
Best to use ____ containing media
blood
Treatment for non spore forming anaerobes
drainage and use of antimicrobial agents
Dichelobacter nodosus and Fusobacterium necrophorum are the causative agents of ____
Footrot in sheep and goats
*lesions causing crippling lameness
(moreso Dichelobacter)
Dichelobacter Nodosus and Fusobacterium are gram _____
negative
Fusobacterium necrophorum is an important causative agent of liver abscesses, necrotic rhinitis, and diphteria in what species?
Bovines
Pathogenesis of Foot Rot
- interdigital epidermis is damaged
- inflammation and necorsis of the foot
- lameness of feet. Affected animals cannot walk
(secondary infection can occur with D. nodosus or F. necrophorum)
Fusobacterium necrophorum can also cause abscesses in what organ of the body?
liver
What will you see if you look at Dichelobacter nodosus under the microscope?
Gram negative with swollen ends at both sides
