40 Actinomyces, Mobiluncusm, Lactobacillus and Propionibacterium. Flashcards
Describe the physiology and structure of actinomyces.
- Facultative anaerobic or strictly anaerobic, G(+) rods, they grow slowly in culture and tend to produce chronic, slowly developing infections. They develop delicate filamentous forms of hyphae (like fungi).
Which parts of the body does actinomyces colonize?
- Upper resp., GI tract, and female genital tracts.
What are the clinical manifestations of actinomycosis going HAM?
- Mostly cervicofacial type as acute, pyogenic infections or as slowly evolving, relatively painless process.
How do colonies of actinomyces look?
- White and domed surface resembling a molar.
What is the treatment for actinomycosis?
- Surgical debreidement, and penicillin.
Describe the physiology and structure of Propionibacterium.
- Small G(+) rods often arranged in short chains or clumps, endogenous (skin, conjunctiva, external ear, and in oropharynx and female genital tract).
What are the 2 species of Propionibacterium?
- P. acne and P. propionicum
What are the two diseases P. acnes is responsible for?
- Acne vulgaris and ooportunistic bacteria in patients with prosthetic device.
What 2 diseases are P. propionicum related to?
- Endodontic abscesses and lacrimal canaliculitis.
What is the treatment for propionibacterium infections?
- Erythromycin and clindamycin
Describe the physiology and structure of Mobiluncusm.
- Obligate anaerobic, Gram (+), curved rods with tapered ends.
What species of Mobiuncusm causes bacterial vaginosis?
- M. curtisii
Describe the physiology and structure Lactobacillus.
- Facultative or anaerobic or strictly anaerobic rods. Endogenous (mouth, stomach, intestines, and genitourinary tract)
What diseases are associated with lactobacillus?
- Transient bacteremia, endocarditis, opportunistic septicemia.
What is the treatment for lactobacillus infection?
- Penicillin w/ an aminoglycoside.
