L23 Spirochetes

Question 1

what are the 3 types of spirochets that act as human pathogens ?

Answer 1

treponema
leptospitra
borellia

Question 2

which species of spirochets does not grow on artificial media ?

Answer 2

treponema syphilis

Question 3

whats the most infective stage of syphilis ?

Answer 3

secondary syphilis

Question 4

which stage of syphilis is associated with skin rashes , mucous pathes in oropharengeal area, and condylomata lata (moist lesions )?

Answer 4

secondary syphilis

Question 5

which stage of syphilis is associated with cardiovascular lesions such as aneurysms ?

Answer 5

tertiary syphilis

Question 6

neurosyphilis :

Answer 6

late tertiary syphilis / quadernary syphilis

Question 7

non specific tests for syphilis “

Answer 7

TESTS FOR REAGIN Abs
VDRL
RPR

Question 8

which borrelia species is part of the normal flora of the mouth ?

Answer 8

B.vincenti

Question 9

what effects can B. vincenti have on the oral cavity ?

Answer 9

can cause ulcerative gingivastomatitis or oropharyngitis (vincents angina )

Question 10

which organism can cause vincent’s angina ?

Answer 10

B.vincenti

Question 11

what organism is always associated with B. vencenti ?

Answer 11

fusospirochelosis

Question 12

which organism can cause lyme disease ? and how is it spread?

Answer 12

B. burgdorferi . by bite of lxodid ticks

characterized by erythema chronicum margins

Question 13

which spirochetes have hooked ends?

Answer 13

leptospira

Question 14

what culture does leptospira grow on ?

Answer 14

fletchers medium

Question 15

which organism causes weils disease?

Answer 15

leptospira

Question 16

what are some features of weils disease?

Answer 16

-spread by rat urine
-hepatorenal damage
-icterus
-purpuric hemorrhage

Question 17

diagnosis :

Answer 17

first week : blood
2nd week: urine
4th week: Abs ( antibody formation starts in first week but continues to increase up until the 4th week)