USMLE (Fach) / Microbiology (Lektion)

Vorderseite Listeria monocytogenes
Rückseite

Gram ⊕, catalase ⊕, motile, facultative intracellular rod.- Acquired by ingestion of unpasteurized dairy products and cold deli meats, via transplacental transmission, or by vaginal transmission during birth.- Grows well at refrigeration temperatures (4-10°C; "cold enrichment").

- Forms "rocket tails" via actin polymerization that allow intracellular movement and cell-to-cell spread across cell membranes, therefore avoiding antibody.- Characteristic tumbling motility in broth.

Can cause:- Pregnant women: Chorioamnionitis, septicemia, and spontanous abortion- Infants: Granulomatosis infantiseptica (sepsis with high mortality; disseminated granulomas with central necrosis), neonatal meningitis- Meningitis in immunocompromised patients (eg, renal transplant patients, adults with cancer)- Self-limited gastroenteritis in healthy individuals

Treatment: Ampicillin

Diese Karteikarte wurde von estoffel erstellt.

Folgende Benutzer lernen diese Karteikarte: