BACTE NFO 2 Flashcards
(54 cards)
NONFERMENTING
GRAM NEGATIVE BACILLI usually presents oxidase ____ reaction
Positive
NONFERMENTING
GRAM NEGATIVE BACILLI presents resistance to the ff. antimicrobials
- aminoglycosides
- third-gen cephalosporin
- penicillin
- fluoroquinolones
How to classify Non Fermenters based on Biochem reaction
★ Growth on MAC
★ Oxidase reaction
★ Glucose OF Test
★ Obligate aerobe, motile, and rod shape
★ Grows at 37 – 42 oC, grows well at 35
oC
★ Colonies have a grape-like or corn-taco or fruity
odor
PSEUDOMONAS AERUGINOSA
Colonies of PSEUDOMONAS AERUGINOSA have a grape-like or corn-taco or fruity
odor due to _______________
2- aminoacetophenone
DISEASE ASSOCIATED with P. aeruginosa
★ Ventilator-associated pneumonia
★ Jacuzzi or hot tub syndrome
(necrotizing rash)
★ Otitis media (swimmers or divers)
P. aeruginosa Pigments
○ Pyorubin (red)
○ Pyocyanin (blue)
○ Pyoverdine (green)
○ Pyomelanin (black or brown)
Bacteria that presents a flat, spreading, mucoid colonies serrated
edges, metallic sheen in BAP
P. aeruginosa
P. aeruginosa reaction in MAC
NLF
Color of P. aeruginosa in Nutrient Agar
Green
P. aeruginosa biochem test
➔ Oxidase (+)
➔ Pyocyanin (+)
➔ Fluorescein (+)
➔ Motility (+)
➔ TSI: K/K
➔ Gelatin Hydrolysis (+)
➔ Nitrate Reduction (+)
Cetrimide Agar stimulators
magnesium chloride and potassium
sulphate
Cetrimide Agar positive reaction
yellow green to blue colonies
Cetrimide agar Inhibitor
cetyltrimethylammonium bromide
Associated with pneumonia in patients with
Cystic fibrosis or Chronic granulomatous
disease
BURKHOLDERIA CEPACIA
Identify Bacteria based on the ff:
➔ Oxidase (+)
➔ Pyocyanin (-)
➔ Fluorescein (-)
➔ Motility (+)
➔ Gelatin Hydrolysis (V)
➔ Nitrate Reduction (V)
➔ Fermented Sugars
> Glucose (+)
> Lactose (+/V)
> Mannitol (V)
> Xylose (+/V)
BURKHOLDERIA CEPACIA
BURKHOLDERIA CEPACIA odor character
Dirt Like Odor
Bacteria that presents a smooth, slightly raised, yellow to brown,
sometimes beta hemolysis strains in BAP
BURKHOLDERIA CEPACIA
BURKHOLDERIA CEPACIA in MAC
NLF (Older colonies sometimes cause false positive)
SELECTIVE MEDIA for BURKHOLDERIA CEPACIA
- Burkholderia Cepacia Selective Agar (BCSA)
- Pseudomonas Cepacia (PC) Agar
- OF BASE, POLYMYXIN B,
BACITRACIN AND LACTOSE (OFBL)
is an agar that has improved the recovery and isolation of B.
cepacia when compared to other selective
mediums
OF BASE, POLYMYXIN B, BACITRACIN AND LACTOSE
OFBL positive reaction
yellow colonies with yellow halos
causative agent of Glanders Disease (Farcy Disease)
BURKHOLDERIA MALLEI
Identify Bacteria based on the ff:
➔ Oxidase (+)
➔ Pyocyanin (-)
➔ Fluorescein (-)
➔ Motility (-)
➔ Gelatin Hydrolysis (-)
➔ Nitrate Reduction (+)
➔ Fermented Sugars
> Glucose (+)
> Lactose (V)
> Mannitol (-)
> Xylose (V)
BURKHOLDERIA MALLEI