Tuberculosis Flashcards
Of 1.3 million TB deaths worldwide annually, how many of these individuals are also HIV+?
300,000
Where are most of the UK’s cases of TB found?
London
What is the name of the responsible organism of TB?
Mycobacteria
What are the two types of mycobacteria that cause TB?
Mycobacterium tuberculosis
Mycobacterium bovis
What is the thick cell wall of the mycobacteria made of?
Lipids
Peptidoglycans
Arabinomannans
Why is it unlikely to catch TB from outdoor bacteria?
As the outdoor mycobacteria is eliminated by UV radiation and infinite dilution
How is mycobacterium bovis transmitted?
Consumption of infected cows’ milk
How is the transmission of M. bovis being solved?
Pasteurisation
What types of macrophages are the only ones that can cause destruction of mycobacteria?
Activated macrophages
What type of cells can activates macrophages?
T-helper 1 cells
What does the accumulation of macrophages, epitheloid and Langhan’s cells lead to?
Granulomas
How does mycobacteria spread?
Via lymphatics
What is a primary complex of TB?
Initial lesion and a local lymph node
What are the 3 outcomes of primary infection of TB?
Progression of the disease
Contained latently
Cleared or cured
An enlarged hilar lymph compressing the bronchi can lead to what?
A lobar collapse