Inhibitors of Cell Wall Synthesis Flashcards
D-Cycloserine mechanism
Inhibits L-Ala–>D-Ala
D-Cycloserine targets
TB (second line bc of side effects)
Bacitracin mechanism
Blocks bactoprenol (lipid carrier)
Bacitracin targets
G+ cocci/bacilli
Neisseria
H. influenza
T. palladium
Bacitracin resistant
Enterobacteriaceae
Pseudomonas
Nocardia
Fosfomycin mechanism
Blocks transfer of NAG–NAM
Fosfomycin targets
Broad spectrum G+&G-
Uncomplicated UTIs
Fosfomycin resistant
Anaerobes
Vancomycin mechanism
Binds D-Ala–D-Ala
Blocks transglycosylase
Vancomycin targets
G+ only (narrow spectrum)
MRSE, MRSE, C. diff, Enterococci
Penicillin G/V targets
G+ aerobes besides staph
Penicillin G/V resistant
Staph, Gonococcus, Intracellular bacteria
Isoxazolyl penicillins
Oxacillin, Cloxacillin, dicloxacillin, nafcillin
Isoxazolyl targets
Staph
NOT MRSA
Aminopenicillins
Amoxicillin, ampicillin, augmentin, unasyn
Aminopenicillins target
G-
B-lactamase inhibitors extend spectrum
Anti-pseudomonal penicillins
Ticarcillin, Carbenicillin, Piperacillin, Timentin
Cephalosporins
More B-lactamase resistant than penicillins
1st gen targets
Gram + cocci
Proteus
E. coli
Klebsiella
2nd gen targets
Gram + cocci Haemophilus Enterobacter Neisseria Proteus E. coli Klebsiella
3rd gen targets
Life-threatening G- sepsis
4th gen targets
Gram-
Nosocomial infections
5th gen targets
G+, G-, no MRSA
Carbapanem targets
G+ cocci, G-rods, anaerobes
B-lactamase resistant so broad spectrum
Monobactam targets
G- rods