Term
| what are the 3 forms of gram + cocci? |
|
Definition
1. Staphylococcus (+ catalase)
2. Streptococcus (-catalase)
3. Enterococcus |
|
|
Term
Staphylococcus aureus
1. Pathogenicity
2. Colony color
3. hymolysis
4. Mannitol fermentation
5. DNase production
6. Coagulase?? |
|
Definition
gram +
1. Primary pathogen
2. Golden yellow
3. B-hemolysis
4. Mannitol fermentation +
5. DNase production +
6. Coagulase + |
|
|
Term
| what are the basic characteristics of staphylococci? |
|
Definition
gram +
Aerobic respiration
Catalase +
most resistant non-endospore forming pathogens
Salt tolerant |
|
|
Term
Staphylococcus epidermis: gram?
1. Pathogenicity
2. Colony color
3. hymolysis
4. Mannitol fermentation
5. DNase production
6. Coagulase?? |
|
Definition
Gram +
1. opportunistic, normal epidermal flora
2. white
3. No hemolysis
4. Mannitol fermentation -
5. DNase production -
Coagulase - |
|
|
Term
| how does staphylococcus adhere to mucosal epithelium? |
|
Definition
|
|
Term
| what is the most common cause of nosocomial infections? |
|
Definition
|
|
Term
| what surface factors does staphyloccus aureus have that inhibits phagocytic engulfment? |
|
Definition
1. Capsule
2. Protein A - prevents antibody clearence and activates complement
3. Coagulase |
|
|
Term
| where is staphy aureus usually found? |
|
Definition
|
|
Term
| what gene found in S. aureus make them resistant to penicillin and ampicillin? |
|
Definition
|
|
Term
|
Definition
| complete hemolysis with a clear zone around colinies |
|
|
Term
|
Definition
| incomplete hemolysis w/ a greenish zone around conlonies |
|
|
Term
|
Definition
|
|
Term
Streptococcus pyogenes
1. Lancefield group?
2. Hemolysis?
3. Diagnosis?
4. Transmission? |
|
Definition
gram +
1. Lancefield group A
2. B-hemolytic
3. rapid strep test - detects group A polysaccharide and elso susceptible to bacitracin
4. Transient carriage by children |
|
|
Term
| characteristics of streptococcus? |
|
Definition
gram +
non-endspore forming
non-mobile
aerotolerant anaerobes
fermantative - lack catalase and oxidase |
|
|
Term
| cell surface virulance factors of streptoccucs? |
|
Definition
Capsular polysaccharide
M-protein |
|
|
Term
Streptococus pneumoniae
1. Virulence factors?
2. Hemolysis?
3. Diagnosis?
4. Transmission? |
|
Definition
gram +
1. Virulence: A) Capsule B) Pneumolysin O - pore forming toxin that activates complement
2. alpha hemolysis
3. Chest r-ray is pneumonia is suspected, inhibited by optochin on blood agar plate, soluble in bile salts
4. carried in naspharynx and transmitted person to person |
|
|
Term
Enerococci faecolis
1. gram?
2. lancefield group?
3. location? |
|
Definition
1. gram positive
2. Lancefield group D
3. found in large intestine as normal flora |
|
|
Term
veridans streptococi
1. gram?
2. hemolysis?
3. Location? |
|
Definition
1. gram +
2. a-hemolysis
3. normal oral cavity flora |
|
|
Term
| what are characteristics of Neisseria? |
|
Definition
gram -
aerobic
grow on chocolate agar
grow best in CO2 pouch |
|
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