Mycoplasma and mycobacteria Flashcards
What is tuberculosis usually confused with?
Cancer
What would cause a false positive result on the PPD skin test?
BCG vaccine
What would cause a false negative result on the PPD skin test?
AIDS, malnutrition, steroids
(T/F) Phagocytized bacteria are destroyed in Mycobacteria tuberculosis
False, they are NOT destroyed, thats why it is dangerous
When your body detects a Mycobacteria tuberculosis infection, the cell-mediated immunity kicks in and does what to the necrotic tissue?
Surrounds it with macrophages, T cells, fibroblasts = Granuloma
What is the purpose of a granuloma?
Localize the infection
What happens if the wall of the granuloma were to burst open?
Infection is active and spreads
What contributes to weight loss in tuberculosis?
Granuloma opens and cord factor kicks in. Inhibits neutrophils and induces TNF
What species causes leprosy aka Hansen’s Disease?
Mycobacterium leprae
Mycoplasma pneumoniae
Ureaplasma urealyticum
Mycobacterium leprae
What is the major virulence factor in Mycoplasma pneumoniae?
P1 adhesion protein; attaches to respiratory epithelium
What species causes atypical pneumonia and is the number one cause of pneumonia in teens and young adults?
Mycobacterium leprae
Mycoplasma pneumoniae
Ureaplasma urealyticum
Mycoplasma pneumoniae
What species produces urease, which metabolizes urea into ammonia and CO2?
Mycobacterium leprae
Mycoplasma pneumoniae
Ureaplasma urealyticum
Ureaplasma urealyticum
What species causes lower urinary tract infections and causes urethritis?
Mycobacterium leprae
Mycoplasma pneumoniae
Ureaplasma urealyticum
Ureaplasma urealyticum
What species causes pneumonia in neonates and plays a role in infertility?
Mycobacterium leprae
Mycoplasma pneumoniae
Ureaplasma urealyticum
Ureaplasma urealyticum
