Filamentous Bacteria Flashcards
Filamentous Bacteria General Characteristics
Growth as filamentous bacteria
Straight or wavy
Actinomyces General Info
Grows anaerobically
Non-acid fast
Molar tooth colony morphology
Actinomyces Colony morphology
Bread crumb-like
Growth in 7-10 days
Actinomyces Microscopic
Presents as long or short branching filaments and diphtheroid forms
Actinomyces israeli pathology
Normal inhabitant of human oral cavity
Cause deep subcutaneous infection of skin, mostly face and neck
Enter the tissues through trauma such as tooth extraction
Characteristic white to yellow sulfur granules seen
Actinomyces bovis pathology
Causes lumpy jaw in cattle
Eumycotic Granule
Granule from mycetoma which also causes draining lesion
Broad hyphae-like
Actinomycotic Granule
Morphology is fine and delicate
Bacterial elements comprising the granule are thin
Nocardia General Info
Aerobically
Partially acid-fast
Nocardia species Colony Morphology
Buff, orange, red, or brown
Chalky, brittle, and verrucose becoming white with age
Culture smells like wet dirt
Nocardia species Pathogenicity
Nocardiosis is a pulmonary disease of respiratory tract
Simulates bronchopneumonia, TB, lung abscess, or neoplasm
Norcardia species of interest
Nocardia asteroides
Nocardia brasiliensis
Nocardia otitidiscaviarum
Streptomyces General Info
Aerobically
Non-acid fast
Streptomyces Colony Morphology
Dry, brittle colony
Musty, earthy odor
Streptomyces Pathogenicity
Non-pathogenic
Rare occasions have been associated with actinomycotic mycetomas
