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