Spirochetes Flashcards
Genus under Spirochetes
- Treponema
- Borrelia
- Leptospira
Spirochetes are ____ organisms
a. Gram positive
b. Gram negative
c. Acid fast
b. Gram negative
Motility of spirochetes
Corkscrew motility
Microscope used to visualize Treponema and Borrelia
a. Darkfield Microscope
b. Phase contrast microscope
c. Brightfield microscope
d. All of the above
e. None of the above
e. None of the above
Borrelia is the only genus under spirochetes that can be visualized using Bright field microscopy
Leptospira and Treponema are visualized using Dark field microscopy or Phase contrast microscopy
Stain used to identify Spirochetes
Silver stain
Spirochetes that multiplies by binary fission
- Borrelia
- Leptospira
Spirochetes that multiplies by transverse fission
Treponema
Blood Spirochetes
Borrelia
Tightly coiled with one (1) or both ends bent to form a hook
Leptospira
Describe appearance of Treponema spp. coils.
- Consist of 4-14 coils per organism
- Regularly spaced
This spirochetes is arthropod-borne and acquired through bites.
Borrelia
Describe appearance of Borrelia spp. coils.
Loosely coiled
Culture media used for cultivating Borrelia spp.
Kelly medium
Culture media used for cultivating Leptospira spp.
Fletcher’s medium
How is the viability of T. pallidum maintained?
Viability is maintained using testicular chancre or rabbits
T. pallidum is non-culturable in vitro.
a. True
b. False
a. True
Agent of syphilis
T. pallidum
Other terms for syphilis
- Great pox
- French disease
How is syphilis transmitted?
a. Sexually
b. Blood transfusion
c. Vertical transmission from mother to child
d. All of the above
e. None of the above
d. All of the above
How many stages does syphilis have?
Four (4) stages
Syphilis stage where there is absence of lesions or symptoms
Latent stage
Syphilis stage where the patient develops lesion in the genitalia
Primary stage
Syphilis stage where the patient develops extragenital lesions
Secondary stage
Syphilis stage where the patient develops lesion in deep organs of the body
Tertiary stage