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33 Cards in this Set
- Front
- Back
- 3rd side (hint)
spore-forming gram positive rods
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Bacillus and Clostridium
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bacillus morphology?
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Boxcars on a train (gram + rods in chains)
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metabolism of bacillus
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aerobic
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only bacteria with a protein capsule
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bacillus
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types of bacilli
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anthracis and cereus
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Anthrax pathogenesis
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spores ingested by macrophages turn vegetative, are released by macrophages and multiply extracellularly
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Required for pathogenicity in Bacillus anthracis
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poly-D-glutamate protein capsule
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What is responsible for antrax toxicity
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three proteins that assemble into toxins: lethal and edema toxins
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A and B components in what?
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anthrax toxin molecules: A for active component to damage cells; B for binding to deliver A into cell
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Anthrax toxin components
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PA/LF/EF
PA+LF = lethal toxin PA+ EF = edema toxin |
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the two A components in anthrax
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lethal factor is one - causes cell death;
edema factor is another - adenylate cyclase causing edema |
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name of B component in anthrax
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protective antigen (PA) which is what Ab's bind to causing anthrax inability to bind to cell
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most common method of anthrax contraction
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zoonosis
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Routes that one can acquire anthrax
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skin, ingestion, aerosol
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black eschar
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necrosis caused by cutaneous anthrax
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ulcer progressing to regional lymphadenopathy
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GI anthrax, high mortality rate
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Two phases of inhalation anthrax
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flu-like with lymphadenopathy;
followed by edema, sepsis, shock, meningitis, death. |
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spores associated with rice
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Bacillus cereus
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toxin associated with fried rice
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emetic toxin in bacillus cereus (1-6 hr) = PREFORMED
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strains of bacillus cereus associated with meat or vegetables have what toxin?
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diarrheal toxin NOT PREFORMED so it causes symptoms 8-10 hrs later
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morphology of Nocardia
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non-spore forming gram + rods
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metabolism of Nocardia
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strict aerobes
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Disease states of nocardia
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Bronchopulmonary disease and Cutaneous lymphocutaneous lesions
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metabolism of Actinomyces
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anaerobic
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Filamentous, anaerobic, non-acid fast, found as normal flora in the female genital tract
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Actinomyces
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Granules in actinocymes-infected tissue
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sulfur granules
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Disease states in Actinomyces
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1) suppurative granulomatous lesions
2) cervicofacial (lumpy jaw) actinomyces 3) Pelvic actinomycosis |
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Actinomyces diseases all have this in common
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abscesses and tissue damage
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clubshaped gram +
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Corynebacterium diptheriae (GPR)
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What does corynebacterium diptheriae grow on?
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Loeffer's or potassium tellurite media
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Three species of corynebacterium
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Gravis, intermedius, mitis
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death, intermediate, miotsis
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lysogenic beta phage acquired exotoxin affects what organs
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Heart, nerves, kidneys
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Treatment of corynebacterium diptheriae
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diptheria antitoxin (DAT), erythromycin, or penicillin
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