Pseudomonas

Question 1

Pseudomonas aeruginosa

Culture

Answer 1

Typical odor (candy sweet)
Blue-greenish pigmentation on certain media, especially on Mueller-Hinton medium = Pyocyanins and Pyocerdins

Question 2

Pseudomonas aeruginosa Virulence Factors

Answer 2

Adhesion - fimbriae, non fimbrial adhesions and OMPs (affinity for mucin), flagella
LPS (endotoxin)
Exotoxins
Biofilm
Capsule (anti phagocytosis)
Iron acquisition

Question 3

Pseudomonas aeruginosa Pathogenesis

Answer 3

Secondary infections
Predisposing factors:
high infection pressure (drinking water)
humidity (fleece rot in sheep)
Colonization on damaged surface - adhesins
Tissue destruction - inflammation, exotoxins, pyocyanin

Question 4

Pseudomonas aeruginosa infections in cats and dogs

Answer 4

Skin infections - pyoderma
Cystitis
Otitis externa
Purulent processes - pus can be blue-green
Eye infections

Question 5

Pseudomonas aeruginosa infections in hamster, guinea pig, chinchilla, mink

Answer 5

Pneumonia
Septicemia
High mortality

Question 6

Pseudomonas aeruginosa infection in rabbit

Answer 6

Skin infection - moist dermatitis
In cleanest rabbitries - with automatic drinking water system; high use of disinfectants
Pneumonia (sporadic)

Question 7

Pseudomonas aeruginosa infection in horses

Answer 7

1. Metritis-vaginitis
   secondary to prolonged antimicrobial treatment; contaminated semen
2. Keratitis conjunctivitis
   secondary infection following topical treatment with steroids-antibiotic mixtures

Question 8

Pseudomonas aeruginosa Mastitis

Answer 8

Bovines, sheep (also fleece rot), and Goats
Acute with high mortality
Origin: environment, teat injector, teat cleansing towel
Persistence in udder, even after treatment

Question 9

Pseudomonas aeruginosa infection in reptiles

Answer 9

Necrotic stomatitis
Pneumonia
Septicemia
Secondary to poor housing

Question 10

Pseudomonas aeruginosa in parrots and parrakeets (psittaciformes)

Answer 10

Secondary infection
Conjunctivitis
Rhinitis
Pneumonia
Airsacculitits
Enteritis
Origin - drinking water

Question 11

Pseudomonas aeruginosa in Galliformes

Answer 11

Origin - water supply
In oviduct of turkeys
Contamination of eggs - exploding eggs (sulfur odor), neonatal mortality

Question 12

Treatment of Pseudomonas aeruginosa

Answer 12

Take away the cause of infection - water supply

Most of the animals die (except otitis externa) even with treatment