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19 Cards in this Set
- Front
- Back
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Actinomyces is gram___
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Positive rods ( some formes are branching filaments and some have no filaments)
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Actinomyces (A.pyogenes) is
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Aerobic
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Actinomyces ( A. bovis) is
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Anearobic
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Actinomyces disease prevalence is
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low and sporadic
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what type of Actinomyces has no filaments?
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Arcanobacterium pyogenes
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What type of Actinomyces have filaments?
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A. Bovis
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Arcanobacterium pyogenes are usually found in
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cattle sheep pigs
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Arcanobacterium pyogenes typically look like what on BA
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tiny colonies on BA with narrow zones of hemolysis
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Arcanobacterium pyogenes tyoically are found where?
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-mucus membranes
-skin |
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Arcanobacterium pyogenes is what kind of pathogen?
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opportunistic pathogen (wound,injury,parturition,navel infection etc)
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Arcanobacterium pyogenes can be a secondary infection of
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Fuso-bacterium necrophorium (infection of the liver-->feed lot cattle)
--> ultimately leading to liver abcesses. |
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what are some disease condidtions of Arcanobacterium pyogenes?
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-abscess & suppurative chronic pneum. (secondary)
-Mastitis -Pyometritis -Arthritis -Liver abscesses in feed lot cattle -role in foot-rot lesions in sheep & cattle -Sub Q abscesses & secondary lesions in the lung following tail-biting in pigs -goat neck abscess -para vertebral adscess -kidney infection |
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Diagnosis of Arcanobacterium pyogenes
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-gram stain of pus,jt fluid etc..
-culture on BA -confirmation API "CORYNE STRIP" - |
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Treatment of Arcanobacterium pyogenes
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-Penicillin effective
-Poor response when abscess encapsulated. Surgical drainage required |
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If mastitis is seen what would you look for to see if a. Pyrogenes is problem?
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look at mastitic milk & culture/smear
-pleomorphism is evident |
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Review of Actinomycetes again..
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-higher bacteria -somewhat fungus like
-Gram + slow growing/tenacious(tight holding..not easily pulled apart) colonies -some have branching filaments -cause pyo-granulomatous lesions -disease prevalence low/sporadic |
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Review of Actinomycetes again..(includes what sub categories?)
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-Actinomyces
-Arcanobacterium -Actinobaculum -Nocardia -Dermatophilus |
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what kind of atmosphere does A.bovis need?
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Anaerobic atomoshere + CO2
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hear lumpy jaw...think
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-A. Bovis
-localized osteomyelitis -pyogranuloma w/fistulous tracts |
