spirochetes Flashcards
what is the unique morphological future of Spirochete
a. motility without flagella
b. corksrew motility
c. rotary movement
d. helically coiled
Spirochetes
- helically coiled and motile through Endoflagella / axial filamements
- UNIQUE MORPHOLOGICAL FEATURE : MOTILITY WITHOUT FLAGELLA because of endoflagella
- they exhibit corksrew like rotary movement
spirochetes do not stain well with what stain
a. gram stain
b. giemsa stain
c. both
spirochetes do not stain well with GRAM STAIN
what spp of Borrelia is agent of lousse - borne epidemic RELAPSING FEVER
a. Borrelia recurrentis
b. Borrelia burgdorferi
c. borrelia burgdorferi sensu stricto
borrelia recurrentis
- relapsing fever
borrelia burgdorferi
- lyme disease or lyme borreliosis
what spp of borrelia is the only human pathogenic spp found in north america
a. Borrelia recurrentis
b. Borrelia burgdorferi
c. borrelia burgdorferi sensu stricto
borrelia recurrentis
- relapsing fever
borrelia burgdorferi
- lyme disease or lyme borreliosis
borrelia burgdorferi sensu stricto
- only human pathogenic spp
what culture media to be used in Borrelia recurrentis
a. human blood bilayer (HBT)
b. MAC
c. BSK II medium
d. mod. kelly medium
ans: c and d
culture media: BSKII medium or mod. kelly medium
most common anthropod borne disease in US
a. borrelia burgdorfer
b. borrelia recurrentis
c. leptospira interogans
d. erysipelothriz rhusiopathiae
borrelia burgdorferi – lyme disease
- most common anthropod borne disease in US
what is spp ECM / erythema chromium migrans belong
a. borrelia recurrentis
b. borrelia burgdorferi
c. leptospiera interrogans
d. treponema pallidum
Borrelia burgdorferi
- ECM : ERTHYEMA CHROMIUM MIGRANS : a red popular rash ( bulls eye rash) that spread into a larger lesion
what stages og infection in borrelia borgderferi is lyme disease
a. stage 1
b. stage 2
c. stage 3
stage of infection
stage 1 - EM rash
stage 2 - blood dissemination
stage 3 - LYME DISEASE
Gold standard in Lyme disease testing
a. widal’s test
b. western blot
c. weil’s felix test
Western blot
- borrelia
{screening test for borelia : elisa }
widal’s test
- salmonella
treponema is difficult to visualize with a bright field microscope but can be observed with __________
a. phase contrast microscope
b. dark field microscope
c. fluorescent microscope
DARK FIELD MICROSCOPE
treponema
borrelia - bright field
what is the reproduction of treponema
a. binary fission
b. multiple fission
c. both
d. nota
MULTIPLE FISSION - REPRODUCTION O FTREPONEMA
Borrelia - multiply by binary fission
how many hours treponema visible in whole blood or plasma
a. atleast 72 hours
b. 8 hours
c. 12 hours
d. 24 hours
it remains visible in whole blood or plasma for atleast 24 hours , which is POTENTIAL IMPORATNCE IN BLOOD TRANSFUSION
what spirochetes can stain in gram stain
a. leptospira
b. borrelia
c. treponema
d. aota
spirochetes DO NOT STAIN WELL AT GRAM STAIN
Borrelia - stains well with GIEMSA
Leptospira - stains fainltywith ANILINE DYE
TREPONEMA - fail to stain or STAIN VERY POORLY WITH GRAM STAIN AND GIEMSA STAIN
what disease is also known as GREAT IMMITATOR
a. hiv
b. syphilis
c. diabetes
d. anemia
Syphilis ( French disease / Italian disease / The Great Pox )
- it is a disease of the BLOOD VESSELS and PERIVASCULAR AREAS
- it is also known as the GREAT IMMITATOR because it can copy and assume many clinical manifestation
what stages of syphilis ha sthe appearance of HUNTERIAN OR HARD CHANCRE
a. primary
b. secondary
c. tertiary
d. latrent
Primary syphilis
- it is characterized by the appearance of HUNTARIAN OR HARD CHANCRE. which is infectious primary lession that is painless and usually seen at the site of innoculation (most commonly is in genitalia)
- it develops at 10 to 90 days after infection
- no systmeic signs and symptoms
SOFT chancre - haemophilus ducreyi
