FUNGI-LIKE BACTERIA NON-SPOREFORMING BRANCHING AEROBIC

Question 1

Nocardia asteroides (7)

Answer 1

● Most predominant
● Weakly acid fast
● Catalase and Urease (+)
● Nocardic acids
● Sometimes confused as gram + cocci
● Meso-diaminopimelic acid (DAP), arabinose and galactose
● Nocardiosis

Question 2

N. brasiliensis (2)

Answer 2

● Seen in the hands and feet
● Outdoor activities

Question 3

Actinomadura madurae (2)

Answer 3

● Fungal tumors
● Mycetoma

Question 4

differentiate nocardia (-) with Actinomadura madurae

Answer 4

Cellobiose and Xylose

Question 5

Streptomyces (4)

Answer 5

● Soil inhabitants
● S. somaliensis - human pathogen
● S. anulatus
● S. paraguayensis

Question 6

Gordonia (2)

Answer 6

● Environmental sources
● Partially acid fast

Question 7

Rhococcus equi (2)

Answer 7

● Growth: zigzag pattern
● Partially acid fast

Question 8

Tsukamurella spp. (2)

Answer 8

● Slightly acid fast
● Rhizoid edges

Question 9

Tropheryma whipplei (3)

Answer 9

● Whipple’s disease
● middle aged men
● PAS (periodic acid-Schiff) staining macrophages