Antibiotics- protein synthesis inhibitors Flashcards
Macrolides- MOA
bind to 50s subunit and prevent translocation
Macrolides- P/O bioavailability
good oral bioavailability
Erythromycin- excretion
biliary
Clarithromycin- excretion
metabolism and renal clearance
Azithromycin- how long does it last, where does it stay, elimination
accumulates in tissues and has renal elimination
t1/2 >3 days
Azithromycin- use
singe dose for NGU
H. influenza
Moraxella
Macrolides- clinical uses
Gram + cocci- not MRSA Mycoplasma chlamydia ureaplasma Legionella
Clarithromycin- use
H. Pylori
Erythromycin- toxicities
GI distress, cholestasis
CI in pregnancy
Erythromycin and Clarithromycin- AE
CYP 450 inhibitors –> enhance:
Carbamazepime, theophylline, warfarin
Spectinomycin use
Single dose tx for uncomplicated gonorrhea
Aminoglycoside- spectrum
Aerobic Gram - rod
Pseudomonas
Streptomycin- Use
2nd line for drug resistant Tb
Neomycin- use
dec gut flora bfr GI surgery
TOpical
Gentamicin/ Tobramycin- use
serious G- rods
synergy with aminoglycosides