Fastidious GNB Flashcards
(40 cards)
Hacek
Aggregatibacter aphrophilus
hAcek
Aggregatibacter actinomycetemcomitans
haCek
Cardiobacterium hominis
hacEk
Eikenella corrodens
haceK
Kingella species
HACEK growth requirements
CHOC & BAP
CO2
No growth MAC or EMB
H - Aggregatibacter aphrophilus disease
endocarditis
H - A. aphrophilus factor requirements
XV independent
A- A. actinomycetemcomitans disease
- Endocarditis
- Periodontitis
- Actinomyces israelii co-infection
A. actinomycetemcomitans colony morphology
star shaped
C - Cardiobacterium hominis disease
Endocarditis
C. hominis Gram stain
rosettes
E - Eikenella corrodens infections
bites/trauma from fist fights
K - Kingella species infections
bone & joint infections in young children
Bordetella pertussis stages
- Catarrhal
- Paroxysmal
- Convalescent
B. pertussis selective media
Borget-Gengou Agar
Charcoal Blood Agar (Regan Lowe)
Filamentous hemagglutinin (FHA) and Pertactin
facilitate attachment
Pertussis toxin allows for (3)
adhesion
invasion
interference with immune effector cells
adenylate cyclase toxin
interference with immune cells
tracheal cytotoxin
ciliostasis, cytotoxicity
B. pertussis toxins
- Filamentous hemagglutinin (FHA)
- Pertactin
- Pertussis toxin
- Adenylate cyclase toxin
- Tracheal cytotoxin
Legionella infections
Pontiac Fever
Legionnaire’s disease
Asymptomatic
Legionella habitat
soil, water
Legionella Gram stain
pleomorphic GNB