9.Vibrio, Campylobacter, Lawsonia, Helicobacter, Arcobacter, Spirochaetes. Bacteriological examination of pathological samples I. Flashcards
Morphology of vibrio species are curved rods, with flagella.
T
Campylobacter jejuni can cause diarrhoea in humans.
T
Lawsonia intracellularis can be cultured on enterocyte cell culture.
T
Heliobacter pylori can cause chronic gastritis and ulcer in humans.
T
Spirochaetes have characteristic morphology, thin helical filaments.
T
Campylobacter species can tolerate 4-6% oxygen.
T
Borrelia burgdorferi can cause Lyme-disease in humans.
T
Brachyspira hyodysenteriae is an obligate aerobic bacterium.
F
Human syphilis is caused by Treponema pallidum.
T
Maintenance host of Leptospira sejroe is cattle.
F (mouse)
Vibrio species can be cultured in alcalic environment (pH 8.6).
T
Human cholera is caused by Vibrio parahaemolyticus.
False, (vibrio cholera)
Campylobacter species are aerobic, facultative anaerobic bacteria
False, (microaerophilic)
Campylobacter fetus spp. venerealis can cause abortion in sheep
False, (cause cattle abortion/infertility)
Swine proliferative enteropathies are caused by Lawsonia intracellularis.
T
. Heliobacter species are urease-negative bacteria.
False, (urease positive)
Spirochaetes are non-motile bacteria
False, (periplasmic flagella)
Borrelia species can be cultured on chocolate agar
False, (giemsa, fuchin and unstained)
Maintenance host of Leptospira ichterohaemorrhagiae is rat.
T
Leptospira hardjo can cause abortion in cattles.
True (also in sheep)
Causative agent of swine dysentery has 9 serogroups.
T (silje sier false 11)
B. anserina causes rabbit syphilis.
False, (by T. paraluiscuniculi)
Leptospira species causes leptospirosis in cattle.
T (in calves)
Helicobacter can cause gastritis.
T
Treponema pallidum is a zoonotic agent
T (silje sier F)
Heliobacter species are bacteria.
T
Lyme-disease is caused by Brachyspira
False, (by Borrelia burgoferi, B. afzelii, B. garinii)
Brachyspira are obligate anaerobic bacteria.
T
The causative agent of swine dysentery can show haemolysis on blood agar.
T
Leptospirosis of dogs is mainly caused by L. grippotyphosa.
False, (leptospirosa interrograns serovar canicola)
Leuaditi´s silver impregnation is an appopiate staining method for Leptospira species.
T
Vibrio species are microaerophilic bacteria
False, (facultative anaerobic)
For the selective culture of Campylobacter species obligate vancomycin-polymyxin-trimethoprim is used.
T
