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25 Cards in this Set
- Front
- Back
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Staphylococci:
G property? Catalase property? Unique sugar fermented? G+C composition? Spores? Motility? O2 |
G+
Cat - Mannitol LOW G/C NO spore NO motility Facultative Anaerobe |
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Polysaccharide A
What is it? What does it do? |
an Adherence factor - for bacteria to host thru FIBRONECTIN
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MSCRAMMS
What is it? What does it do? |
Adhereance facttor, recognition of host collagen, elastin etc
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Coagulase
What is it? What does it do? |
Adherence factor, for CLUMPING of bacteria thru Firbinogen-->Fibrin change
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What are the 5 Cytotoxins of Staphy Aureus?
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Alpha, Beta, Delta, Gamma, Leukocidin
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What does alpha toxin of S. aureus do? What is it?
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A cytotoxin, lyse RBC, PMN, Phages and PLATELETS
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What does beta toxin of S. aureus do? What is it?
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A cytotoxin, lyse RBC, PMN, Phages, FIBROBLAST
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What does delta toxin of S. aureus do? What is it?
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A cytotoxin, lyse RBC, PMN, Phages
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What does gamma toxin of S. aureus do? What is it?
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Lyse RBC and LYMPHOBASTIC cells
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What does Leukocidin do? What is it?
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A Cytotoxin of s. aureus, cytotoxic for PMN
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What is a exfoliative toxin of S.aureus? What does it cause?
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One that splits desmosomes, causing SSSS
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What does an enterotoxin of S. aurues do? What does it cause?
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One that causes food poisining, can cause TSS
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What are 4 ways S aureus does immunoavoidance?
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Biofilm, Capsule, Protein A, Leukocidin/y-hemolysin
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What does Protein A do? What is it?
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a immunoavoidance factor of S. aureus, it binds Fc of IgG and thus is antiphag
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What does LIPASE do? What is it?
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it is an extracellular enzyme VF of S aurues, it splits oils/fats of SKIN to allow entrance of bacteria
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What does Hyalyrondase do? What is it?
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A VF of S aurues, it allows bacteia to SPREAD
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What does STAPHYLOKINASE do?
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causes blood clots to dissolve to allow spreading of bacteria
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what are 3 ways to diagnose S. Aureus?
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A G+ stain, Catalse + and Coag +
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What is the preferred treatment for S. aureus? What are backups?
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Penicillin, then vanco or eryhtromycin
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How can TSS be caused by S. aureus?
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Menstrual - by tampons, or non menstrual thru surgical/skin/birth/abortion infection
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What properties make S. epidemidis and saprophyticis different from aureus?
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They are Coag -, and non-hemolytic
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How do you treat s epidemidis?
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vancomycin
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How do youi treat saprophyticis?
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Norflaxacin
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What is a major cause of UTI's in adolescent females?
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Staph saprophyticus
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What is unique to saprophyutcs vs. other staphs?
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Novobiocin resistant
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