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22 Cards in this Set
- Front
- Back
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Nocardia general characteristics
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gram positive branching rods/chains
nonmotile, non-spore-forming partially acid-fast |
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Nocardia ALET
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STRICT aerobic
facultative intracellular soil, organic material wound/abrasion, inhalation from ground, teat canal |
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Nocardia asteroids pathogenesis
surface virulence factors |
trehalose dimycolate (inhibits phagosome/lysosome fusion
membrane bound catalase superoxide dismutase |
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Nocardia asteroides
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cutaneous/subQ in the Bovine/canine/equine/feline
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Nocardia asteroides
thoracic infection |
canine/equine - abscess in several organs
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nocardia asteroides
mastitis |
Bovine (environment, not from other animals)
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Nocarida asteroides
abortion |
equine/swine
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Nocardia spp diagnosis/control/prevention
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Giemsa/gram/acid fast stains
laboratory culture surgical drainage- drain tube, topical antibiotic treatment - triment sulfa zoonosis rare |
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Nocardia spp
pulmonary treatment |
empirical for 12 seeks to 3 months.
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Listeria spp
general characteristics |
Gram positive rods
pair or loose clusters tumbling motility replicate @ 4 - 45 hemolytic, CAMP |
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Distinguishing characteristic of Listeria spp
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replicate at 4 degrees.
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Listeria spp hemolytic properties like what other species
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Group B strep
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Listeria spp ALET
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facultative anaerobe
facultative intracellular herbage, water, soil |
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Listeria transmission
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ingestion
contaminated food and water occassionally conjuctiva and inhalation can cross blood/brain barrier |
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Listeria Pathogenesis
surface virulence factor |
internalins
invasion, helps them get in |
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Listeria
secreted virulence factors |
Listeriolysin (LLO)
Phospholipase (damage cell membrane - intracellular survival Host cell Actin - ActA - cell to cell spread |
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Listeria monocytogenes
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domestinc animals
encephalitis abortion septicemia |
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Listeria monocytogenes disease - meningoencephalitis
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oral nerve ending to trigeminal cranial nerve, to brainstem circling, paralysis, death
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Listeria monocytogenes disease abortion
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placentitis, fetal death, crosses placenta
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Listeria monocytogenes
disease ruminant mastitis |
septicemia/visceral GI tract
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Listeria monocytogenes
zoonosis |
meningitis - immunocompromised elderly
abortion febrile enteritis - normal adults source of infection - contaminated foods |
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Listeria infection
diagnosis, control, and prevention |
clinical history
lab culture - CSF/tissues anitbiotic treatment - pen, ceph,ery management of silage 9c |
