TB Flashcards
Isoniazid
-cidal Inhibits mycolic acid synthesis, pro drug activated by mycobacterial catalase. Inhibits CYP450. Give vitamin B6
Rifampin
-cidal, inhibits DNA dependant RNA polymerase. Activates CYP450, liver tox Red secretions
Streptomycin
30S ribosome inhibitor, cannot enter cells, can be used instead of ethambutol
Pyrazinamide
-cidal inhibits translation, decreases pH, dormant TB
Ethambutol
-static, inhibits arabinosyl transferase and decreases mycolic acid and increases cell wall permeability, vision problems, contraindicated in kids
Pyridoxine
vitamin B6, given with isoniazid because it interferes with B6 metabolism.
Latent infection treatment
rifampin for 4 months, or isoniazid for 9 months.