Glossary of Micro - staphylococci
Other Decks By This User
- What are the morphological characteristics of S. aureus? What are its growth characteristics in culture?
- *G+ cocci
*will grow on mannitol salt agar
- S. aureus contributes to a number of disease states. Name 3 that are on or very close to the skin.
- *pyogenic abscesses
- What are 4 deep or systemic infections caused by S. aureus?
- *pyogenic abscess
- What are three dieases mediated by toxins produced by S. aureus? What are the toxins associated with each?
- *staphylococcal food poisoning - enterotoxin
*scalded skin syndrome - exfoliatin
*TSS - TSST-1
- How does protein A add to the virulence of S. aureus?
- It binds the Fc region of Ig's and prevents them from opsonizing the bug.
- What controls the expression of the virulence factors of S. aureus?
- Accessory gene regulator.
- Name 3 virulence factors for S. aureus that begin with "c". What does each do?
- *capsule - antiphagocytic
*catalase - neutralizes H2O2
*coagulase - promotes clotting
- What kind of resistance does S. aureus have? What is the mechanism here?
- *PCN resistance - due to B-lactamases
*methicillin - due to PBP mutation
- How should infections with S. aureus be treated?
- Abscesses should be surgically drained and debrided.
- What type of disease is S. saprophyticus associated with?
- UTI in young, healthy, sexually active women.
- What type of nosocomial infection is S. epidermidis associated with? What are the more serious sequelae of these infections?
- *Infections of implanted devices
*endocarditis and septicemia
- What is the primary virulence factor of S. epidermidis?
- *slime layer promotes adherence
You must Login or Register to add cards