Unusual Bacteria

Question 1

Mycobacterium Tuberculosis

Answer 1

Trans: Air droplets

Can’t be phagocytized due to unique cell wall
Protective granulomas formed due to the production of cytokines

Question 2

Mycobacterium Laprae

Answer 2

Trans: coughing or sneezing or prolong close contact

Obligate intracellular parasite

Seems to be genetically based, 95% people naturally resistant

2 Form

1. Tuberculoid- discrete lesions well organized granulomas few bacilli
2. Lepromatous- several nodular or diffuse lesions containing many poorly organized granulomas

Question 3

Mycobacterium marinum

Answer 3

Trans: exposure to small cut or scrape, found in fresh and saltwater

Signs include reddish or tan skin with granuloma

Question 4

Nocardia asteroids

Answer 4

Trans: inhalation of dust

Produces virulent form of pneumonia

Question 5

Actinomyces

Answer 5

Anaerobic

Live in spaces between gums and tough

Forms painful abscesses in the mouth, lungs, breast or GI tract,

Question 6

Mycoplasma pneumoniae

Answer 6

Trans: air droplets from sick people

walking pneumoniae

Question 7

Mycoplasma genitalium

Answer 7

Trans:sex

In women: pain during sex, bleeding from vagina, dishcarge

In men: urethritis, stinging or burning during urination,

Question 8

Ureaplasma

Answer 8

Trans: sex, passed from mother to fetus

part of normal bacterial pop.

Question 9

Rickettsia

Answer 9

Trans: arthropod bite

multiply in the endothelial cells of small blood vessels( vasculitis)

Regional lymphadenopathy

Question 10

Chlamydia

Answer 10

Obligate intracellular parasite
Depends on host for ATP and NAD

Complex life cycle with two main cell type
I. Elementary body(EB): Infectious form
II. Reticulate body(RB):replicative form