Gram negative bacilli of anaerobes:

Question 1

What are the gram negative bacilli of anaerobes?

Answer 1

Bacteroides fragilis group
Fusobacterium
Prevotella
Porphyomonas

Question 2

Where are GNB of anaerobes normal flora in?

Answer 2

Mouth and colon

Question 3

Of the Bacteroides fragilis group, which one is most commonly isolated? What % of Bacteroides infections does it account for?

Answer 3

B. fragilis
50%

Question 4

What could cause Bacteroides infection?

Answer 4

When the organisms move to an area following surgery of trauma
Specifically areas of the abdominal cavity or female genitalia

Question 5

What are Bacteroides resistant to?

Answer 5

Penicillin, kanamycin, vancomycin and colistin

Question 6

What infections is fusobacterium involved in?

Answer 6

Involved with pulmonary and blood infections, brain abscesses and sinus and dental infections

Question 7

Of the 2 species of fusobacterium which one is the most common?

Answer 7

F. nucleatum
important pathogen in biofilms oral infection

Question 8

What kind of oral infections does F. nucleatum cause?

Answer 8

Periodontal disease
Root canal infections
Dental abscesses

Question 9

What other infections does F. nucleatum cause?

Answer 9

infections and abscesses of the:
blood
brain
lung
liver
abdomen
joints
genitourinary tracts

Question 10

Lemierre’s syndrome

Answer 10

Caused by F. necrophorum
Infection of an abscess in the neck tissue after a sore throat
Once F. necophorum penetrate through abscess, it enters bloodstream causing blood clots and dissemination of vital organs

Question 11

Vincent’s angina (trench mouth)

Answer 11

Caused by F. necrophorum when it comes in contact with spirochetes
Inflammation of the oral cavity with purulent discharge and ulcerating lesions