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43 Cards in this Set

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  • Back
Group A Strep
streptococcus pyogenes
Group B Strep
Streptococcus agalactiae
Group D Strep
S. bovis
E. faecalis
Strep with no lancefield group
viridans
s. pneumoniae
anaerobic strep
S. pyogens disease
acute pharangitis
s. agalcatiae disease
neonatal meningitis and sepsis in adults
e. faecalis and s. bovis disease
UTI, endocarditis
virdans disease
caries, endocarditis
s.pneumoiae
lobar pneomonia
Group A acute infections include?
strep pharyngitis
scarlet fever
impetigo
erysipelas
strep toxic shock
ednocarditis
necrotizing fascitis
Strep pharyngitis
purulent exudate
tonsilitis
A
Scarlet Fever
pharyngitis
erythematous punctiform rash
A
Impetigo
infection of superficial layers of skin in children
A
Erysipelas
infection of skin and subcutaneous tissue edema with distinctive advancing border
A
Strep TSS
superantigens
A
Endocarditis
injured or congenitally deformed heart tissues
A
Necrotizing fascitis
infection of deeper subcutaneous tissue and fascia with extensive necrosis and gangrene
A
Group A late Sequelae
rheumatic fever
glomerulonephritis
Rheumatic Fever
type II hypersensitivity
cross rxt with human heart Ag
fever,k polyarthritis adn carditis
glomerulonephritis
typer III hypersenstiitvity
deposit AgAg complexes in glomerular BM
fever, blood in urine, edema
Characteristics of strep pyogens
gram + cocci
nonmotile
catalase negative
HA - capsule
divide in 1 plane
What is the metab of strep pygens?
facultatively anaerobic
obligate anerobes
What organisms does s. pneumonia infect?
HUMANs only
How is s. pyogenes spread?
respiratory droplets
5 important antigenic structures in group A strep
R ant T protiens
M protiens
lipoteichoic acid
HA capsule
antigenic mimicry
what is the important antigenic structure of s. pneumoniae?
capsular polysaccharides
R adn T protiens are?
epidemilogical markers on group A strep
M protiens are?
virulence determinants that encode anti-phagocytic stuff
Lipteichoic acid is?
mediates attatchment to host cells in group A strep
HA capsule does what?
cross reacts with host CT in group A strep
Anitgen mimicry is impt in group a strep because?
ctross rxt with many diff types of tissues
what is teh purpose of capsular polysaccharides in s. pnuemoiniae?
anti-phagocytic
major virulence factor
23 diff
What are teh types of leuotoxins?
Streptolysin S - O2 stable hemolysin
Streptolysin O - reversibel O2 labile hemolysin
NADase
Hyaluronidase does?
lyses host CT and capsule
What is streptokinases activity?
fibrin lysis
What are pyrogenic exotoxins SPEs ABC?
superantigens
Pyrogenic exotoxins are associated with?
triggering non-specific cytokine production
Postinfectious sequelae occur with?
s. pyogenes but NOT s. pneumoniae
Group B - s. agalactiae
skin infections in pts w. vascular disease
neonate infections, menigitis
Group D infections
s. bovis - bowel disease
Viridans infections
endocarditis, dental carries
Enterococci characteristics
gram + cocci
highly resistant to Ab tx
2 impt species of enterococi
e. faecalis
e. faecium