Flashcards in E2 Order Actinomycetales Deck (42)
What are the 3 important families in this order Actinomycetales?
What is the gram stain of the order Actinomycetales?
What is unique about the appearance of the order Actinomycetales?
Long branching filamentous rods
What are some culture characteristics of the family actinomycetaceae?
2. NOT-acid fast
3. Formation of sulfur granules (rosetts)
What are sulfur granules composed of?
1. Bacterial filaments
2. Calcium phosphate from the host
What are some characteristics of actinomycetaceae family infections?
2. Soft & hard tissues
3. Often with foreign bodies
What species has actinomyces bacteria as normal flora? Where?
Oropharynx & digestive tract
What are the clinical signs when a dog has an overgrowth of actinomyces bacteria?
Soft tissue swellings with sulfur granules
(head & neck)
What are some clinical presentations of actinomyces infections in cats (3)? Which one is most common?
1. Bite wound abscess
2. Pyothorax = most common
How can an actinomyces infection lead to pyothorax?
Deep chest wound
What type of antibiotics work well against actinomyces?
Is actinomyces normal flora in cattle? If so where?
But can be opportunistic invaders of deep tissues
What is the name for the disease caused by actinomyces in cattle?
What is actinomyces infection associated with in cattle?
What two diseases does actinomyces cause in horses?
1. Fistulous withers
2. Poll evil
What two diseases can actinomyces cause in swine although rare?
1. Suppurative mastitis
2. Cystitis in older sows
What pathological process occurs in cattle with actinomyces infections?
Is there a vaccine for actinomyces bovis?
What is another genus of the actinomycetaceae family?
What is the only species of arcanobacterium of veterinary importance?
What role does arcanobacterium pyogenes play in animal health?
Commensal of the skin, upper respiratory tract and genitals
What diseases can arcanobacterium pyogenes cause if it enters deep tissues (4)?
2. Arthritis (green caseous pus)
What is another genus of gram-positive filamentous bacteria?
Where is Nocardia typically found?
What is special about Nocardia's metabolism?
What is the most important veterinary species of Nocardia?
How does Nocardia asteroides cause infections?
1. Dirt in wounds
What animals can be infected with Nocardia asteroides?
(rare in birds)
What cells are infected by Nocardia asteroides?