Mycoplasma and Ureaplasma

Question 1

2 main pathogenic species

Answer 1

Mycoplasma pneumoniae and Ureaplasma urealyticum

Question 2

Mycoplasma

Answer 2

tiniest exists on outside of cell, draws nutrients (like cholesterol) from drawing them out from cell it attaches to. Mycoplasma attaches to ciliated and non-ciliated cells. has no cell wall but has a three layered sterol membrane

Question 3

Mycoplasma in culture

Answer 3

extremely slow growing, very fastidious , produces a fried egg colonies, however, M.pneumoniae do not produce these colonies.
Culture has been discontinued, now use molecular assay

Question 4

M. pneumoniae

Answer 4

Causes an upper respiratory infection and pneumonia, transmitted via respiratory droplets produced by coughing. infection of the respiratory tract has a 2 to 3 week incubation period, onset looks like flu, with a dry non productive cough

Question 5

M.hominis

Answer 5

very aysmptomatic, loose association but will present as PID, more prevalent in sexually active females

Question 6

Dermatologic conditions associated with M.pneumoniae

Answer 6

can occur in 7% of people, a sever skin reaction of erythematous vesicles and bullae over mouth, eyes and ski, more common in men - Steven Johnson syndrome
Also can have Raynaud’s phenomenon- vasospasms of fingers when exposed to cold, more common in women- whitening of fingers, and spasmodic pain.

Question 7

diagnostic features of M.pneumoniae

Answer 7

cold agglutins test and complement fixation test, IgM assay

Question 8

ureaplasma urealyticum

Answer 8

causes urethritis, not typically….