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21 Cards in this Set
- Front
- Back
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What are the three types of bacteria within the actinomycetes?
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Nocardia
Actinomyces Streptomyces |
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What kind of an organism is Nocardia? What "group" is it in?
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Bacteria
Actinomyces |
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What kind of an organism is Actinomyces? What group is it in?
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Bacteria
Actinomycetes |
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What kind of an organism is Streptomyces? What group is it in?
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Bacteria
Actinomycetes |
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What is the morphology and staining of the organisms within Actinomycetes?
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Thin
Filamentous; looks "beaded" Branching Gram positive +/- acid-fast |
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What is the morphology of nocardia?
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Gram positive
Acid-fast Aerobic (different from actinomyces in this respect) Branching Filamentous |
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What does nocardia appear like in culture?
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Granular
Brownish-white |
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Where in the environment is Nocardia found?
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Soil
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What population manifests Nocardosis?
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IMMUNOSUPRESSED!
DON'T GET THIS WRONG AGAIN, JOHN! |
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What forms of immunity are important in Nocardosis?
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PMNs/Macrophages
Cellular Immunity |
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What is the pathogenesis of Nocardia?
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Inhaled from dirt into the lungs
Hematogenously spreads to other organs |
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What disseminated findings can be cause by an infection by Nocardia? Where?
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Nodules/abscesses
Lungs Brain Skin |
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What are the most effective ways to diagnose Nocardosis?
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Culture
Smear the purulent material |
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What is the treatment for Nocardosis?
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Bactram for 6 months.
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What is the morphology, staining, and oxygen status of Actinomycosis?
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Gram positive
Weakly acidic ANAEROBIC Branching Filamentous |
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What is the normal environmet of Actinomyces
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Mouth
GI GU tracts |
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What is a common presentation for an untreated infection by Actinomyces?
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Lumpy jaw:
Large nonhealing abscess on the side of the mouth, penetrating from the mucosal surface to the skin to drain |
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Who is the typical host for an Actinomyces infection?
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Healthy host
Post-surgical patients (disruption of mucosa) Patients who have had dental work done. |
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What is the pathogenesis of Actinomyces?
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Penetration through the oral mucosa and through the fascial pains
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What is the most effective way to diagnose an infection by Actinomyces?
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Culture
Smear of the purulent material: Gram +, Weakly acid fat |
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What is the treatment for Actinomyces?
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Penicillin for 6-12 months
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