Gram Positive Flashcards
7 +ve bacteria
Staphylococcus aureus, Staphylococcus epidermidis, streptococcus progenes, Staphylococcus pneumoniae, Staphylococcus viridans, clostridium difficile, listeria monocytogenes
Staphylococcus aureus shape/ID
Cocci, beta-haemolysis
Staphylococcus epidermis shape/ID
cocci
Streptococcus pyogenes shape/ID
Cocci forming chains, group A streptococcus, beta haemolytic
Strep pneumoniae shape/ID
cocci, alpha-haemolytic
Streptococcus viridans shape/ID
cocci, alpha haemolytic
Clostridium difficile
bacillus
Listeria monocytogenes
bacillus
Staphylococcus aureus virulence factors
catalase, coagulase, capsule, superantigen toxins, pro inflammatory lipotechoic acid in cell wall, forms biofilms, MRSA - beta lactamases
Staphylococcus epidermidis virulence factors
Catalase, biofilms
Streptococcus pyogenes virulence factors
biofilm, superantigens, M proteins, capsule
Streptococcus pneumoniae virulence factors
polysaccharide capsule, invasins and adhesins
Streptococcus viridans virulence factors
Low virulence: no capsule or lance field antigens
Clostridium difficile virulence factors
forms spores, enterotoxin and cyotoxin (kills GI cells)
Listeria monocytogenes virulence factors
Intracellular
Staphylococcus aureus commensal
upper resp tract, skin, GI tract
Staphylococcus epidermidis
skin flora
Streptococcus pyogenes
Nasal cavity
Streptococcus pneumoniae
Nasal cavity and URT
Streptococcus viridans
Oral cavity
Clostridium difficile
Gut flora