Pseudomonas aeruginosa Flashcards
most important species in pseudomonas genus
pseudomonas aeruginosa
respiration
gram
shape
motility
reservoir
opportunistic?
oxidase
catalase
aerobic
gram negative
rod
motile – polar flagella
reservoir is environment
opportunistic – detected in healthy animals, found in environment
oxidase positive
catalase positive
odor, and why
fruity grape like odor
aminoacetophenone
pigments
pyocyanin
multidrug resistance
impermeability
multidrug efflux pumps
aminoglycoside modifying enzymes
biofilm – alginate
beta lactamases – resistant to penicillin
virulence
exotoxin A
phospholipase C – hemolysin
pyocyanin – ROS
pyoverdin – siderophores
degradative enzymes
pili
flagella
LPS
biofilm – mucoid EPS, alginate
T3SS – exoenzyme S
what location does it prefer
body sites exposed to oxygen
skin, ears, respiratory tract
skin infections
fleece rot – sheep
pyoderma – dogs
ear infections
otitis externa – dogs, cats
otitis media/interna – chinchillas
eye infections
ulcerative keratitis – dogs, cats, horses
respiratory infections
pneumonia – dogs, cats, chinchillas
bloodstream infections
bacteremia, septicemia – chinchillas
other infections
mastitis – cattle, sheep
necrotic stomatitis (oral cavity infection) – snakes
nutrient agar
fruity grape odor
pyocyanin pigment
smooth round colonies
macconkey agar
non lactose fermenter
white colorless colonies
