Anaerobes of Clinical Importance

Question 1

Organisms that are obligate anaerobes which means that they do not grow on presence of oxygen and are killed upon brief exposure to 02

Answer 1

Prevotella spp.
Fusobacterium spp.
Bacteriodes spp.

Question 2

Organisms that are MICROAEROPHIILIC (aerotolerant) that can grow in the presence of either reduced or atmospheric oxygen but can grow best under anaerobic condition.

Answer 2

Actinomyces spp.

Bifidobacterium spp.,

Question 3

Anaerobic organisms lack this enzymes , the enzymes required to breakdown reactive oxygen.

Answer 3

superoxide dismutase and catalase

Question 4

How does the majority of anaerobic infection occur?

Answer 4

when a patient’s normal flora gains access to a sterile site as a result of
disruption of some anatomic barrier.

Question 5

Anaerobic species that produces some of the most potent toxin known

Answer 5

C. botulinum and C. tetani