Microbiology

Bacteria (with pictures)

51 cards   |   Total Attempts: 188
  

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Cards In This Set

Front Back
Question 1

Catalase (-)
beta-hemolysis
bacitracin sensitive
LAB CHARACTERISTICS Streptococcus pyogenes (GAS)
Question 2

Catalase (-)
alpha-hemolysis
optochin sensitive
LAB CHARACTERISTICS Streptococcus pneumonea
Question 3

Catalase (+)
Coagulase (+)
LAB CHARACTERISTICS Staphylococcus aureus
Question 4

Catalase (+)
Coagulase (-)
Novobiocin sensitive
LAB CHARACTERISTICS Staphylococcus epidemidis
Strep pyogenes (GAS) toxins (4)
TOXINS
  1. M-protein,
  2. Streptolysin O/S,
  3. Erythrogenic toxin/Pyrogenic exotoxin,
  4. Streptokinase
Strep pyogenes (GAS) Tx (4)
  1. Penicillin G,
  2. Penicillin V,
  3. Erythromycin,
  4. Clindamycin [nec fasciitis or TSS]
Question 7

Catalase (-)
beta-hemolysis
bacitracin resistant
(+) cAMP test
LAB CHARACTERISTICS Strep agalactiae (GBS)
Strep agalactiae (GBS) infections
Neonatal meningitis, pneumonia, & sepsis
Question 9

Catalase (-)
beta-hemolysis
bacitracin resistant
bile salt growth
LAB CHARACTERISTICS Enterococcus (GDS)
Question 10

Catalase (-)
alpha-hemolysis
optochin resistant
LAB CHARACTERISTICS Strep viridans
Most important VIRULENCE FACTOR of Strep pneumoniae
CAPSULE: interferes w/ opsonization
vaccine is to 23 most common Ag's
Staph aureus TOXINS (4)
  1. Exfoliative exotoxin,
  2. Enterotoxin,
  3. TSST-1
  4. Panton-Valentine Leukocidin
Staph aureus VIRULENCE FACTORS (5)
  1. Protein A
  2. Coagulase
  3. Capsule
  4. Clumping factor
  5. Lipase & Hyaluronidase
Staph aureus CONTROL OF VIRULENCE
Agr: expressed in stationary phase, UP regs toxins, DOWN regs surface protiens
Staph aureus Tx
  1. Penicillinase-resistant penicillins (nafcillin & oxacillin)
  2. Vancomycin
  3. Clindamycin