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15 Cards in this Set
- Front
- Back
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candida species
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C albicans (germ tube)
C. glabrata (no psuedohyphae, only see yeast) C. dubliniensis (germ tube, highest prevalance from HIV) |
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candida albicans
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most common oportunisitc infection
yeast germ tube oral thrush esophagitis in AIDS invades blood vessels |
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aspergillius
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fuzzy blue green mold
causes allergic reaction fungas ball in pre-existing TB cavity septate hyphae 45 degree branching |
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zygomycetes
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black mold
medical emergency (invades blood vessels quickly) non-septated hyphae with 90 degree branching rhinocerebral, pulmonary, GI tract, cutaneous, disseminated need to have surgery to cut it debree it |
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dermatophytes
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tinea- "ringworm"
epidermophyton, microsporum, trichophyton mold (can see true hyphae) inflammation is greatest at margin, leaving a central area with some clearing macro and micro conidia |
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cryptococcus
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yeast
causes meningoencephalitis conidia inhaled from pigeon droppings Capsule (seen with india ink) |
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histoplasma capsulatum
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dimorphic
no capsule bat/chicken droppings ohio/mississippi river valleys budding yeast inside macrophages causes cavitating granuloma (TB like symptoms) |
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blastomyces dermatitidis
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dimorphic
chicago disease broad based bud lollipop conidia causes chronic pneumonia |
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coccidioides immitis
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dimorphic
from desert southwest inhalation of arthroconidia (barrel shaped mold) spherules in tissue (yeast) primary pulmonary infection usually get erythemia nodsum |
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penicillium marneffei
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dimorphic
major opportunistic infection endemic in SE asia characteristic skin leasions that look like molluscum contagiosum looks like aspergillus, but have binary fission distinctive red pigment in agar |
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sporothrix schenckii
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dimorphic
rose gardeners disease spreads thru lymphatics cigar shaped yeast mold with daisy-like conidiophore mostly skin problems, but can disseminate |
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brucella
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aerobic
urease positive flu-like illness with undulating fever grow inside macrophages small caseating granulomas smallest thing you will see in culture comes from unpasteurized goat cheese very slow growing |
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francisella tularensis
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comes from ticks or rabbits (hunters are at risk)
black skin ulcer caseating granulomas requires cysteine for growth |
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pasteurella multocida
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oxidase positive (distinguishes from enterobacteraciae)
cellulitis due to cat/dog bite oxidase positive (wont grow on macconkey agar) |
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yersinia pestis
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looks like safety pins on gram stain (bipolar staining)
bubonic plague capsular f-1 antigen is antiphagocytotic |
