Cell Wall Inhibitors Flashcards
Penicillin G
Bacteriostatic (cidal in growing cultures) Beta-lactoam antibiotic. selectively interfere with cell wall synthesis of bacteria: targeting penicillin binding protein AND autolysin activity degrading enzymes produced by bacteria
Resistance: production of b-lactamase or penicillinase
Narrow spectrum natural penicilin. IV
ADV. rash, fever, anaphylaxis. potentiation of anticoagulat effcts of warfarin. Jarisch-herxheimer reaction when trating syphilis.
- Streptococcus penumonia *, pyogenes, viridans
- Bacillus antracis
- Corynebacterum diphteriae
- Neisseria gonorrhoes
- Neisseria meningitidis
- clastridium perfringens
- treponema pallidium (syphillis), pertenue (yaws)
Penicillin V
Bacteriostatic (cidal in growing cultures) Beta-lactoam antibiotic. selectively interfere with cell wall synthesis of bacteria: targeting penicillin binding protein AND autolysin activity degrading enzymes produced by bacteria
Resistance: production of b-lactamase or penicillinase
Narrow spectrum natural penicilin. ORAL
ADV. rash, fever, anaphylaxis. potentiation of anticoagulat effcts of warfarin. Jarisch-herxheimer reaction when trating syphilis.
Streptococcus penumonia \*, pyogenes, viridans Bacillus antracis Corynebacterum diphteriae Neisseria gonorrhoes Neisseria meningitidis clastridium perfringens treponema pallidium (syphillis), pertenue (yaws)
Amoxicillin
Bacteriostatic (cidal in growing cultures) Beta-lactoam antibiotic. selectively interfere with cell wall synthesis of bacteria: targeting penicillin binding protein AND autolysin activity degrading enzymes produced by bacteria. Amino group positive charge enables diffusion thru porins on gram neg.
Resistance: production of b-lactamase or penicillinase [given in combo with cluvalanic acid]
ORAL
ADV: rash, nausea, vomitting, diarrhea
TX. uncomplicated ear, nose, throat, and resp infections. prophylactic dentistry.
- Enterococci (Grm +)
- Listeria monocytogenes (+)
- escheriachia coli (-)
- h. influenzae (-)
- proteus mirabilis (-)
- salmonella typhi (-)
Ampicillin
Bacteriostatic (cidal in growing cultures) Beta-lactoam antibiotic. selectively interfere with cell wall synthesis of bacteria: targeting penicillin binding protein AND autolysin activity degrading enzymes produced by bacteria. Amino group positive charge enables diffusion thru porins on gram neg.
Resistance: production of b-lactamase or penicillinase [combination form with sulbactam]
ADV: rash (macupapular -esp. with mono), nauseam vomitting, diarrhea
- ** Enterococci (Grm +)**
- ** Listeria monocytogenes (+)**
- escheriachia coli (-)
- h. influenzae (-)
- proteus mirabilis (-)
- salmonella typhi (-)
Oxacillin
Bacteriostatic (cidal in growing cultures) Beta-lactoam antibiotic. selectively interfere with cell wall synthesis of bacteria: targeting penicillin binding protein AND autolysin activity degrading enzymes produced by bacteria
anti-staphylococal penicilin with beta.lactamse resistance [not excreted thru kidney]
ADV. diarrhea, neausea, vomitting. hepatitis
TX. skin and soft tissue infections, systemic infections with beta.lactamse producing bateria
Dicloxacillin
Bacteriostatic (cidal in growing cultures) Beta-lactoam antibiotic. selectively interfere with cell wall synthesis of bacteria: targeting penicillin binding protein AND autolysin activity degrading enzymes produced by bacteria
anti-staphylococal penicilin with beta.lactamse resistance (not excreted thru kidney)
ADV. diarrhea, neausea, vomitting pseudomembranous enterocolitis.
TX. skin and soft tissue infections, systemic infections with beta.lactamse producing bateria
Nafcillin
Bacteriostatic (cidal in growing cultures) Beta-lactoam antibiotic. selectively interfere with cell wall synthesis of bacteria: targeting penicillin binding protein AND autolysin activity degrading enzymes produced by bacteria
anti-staphylococal penicilin with beta.lactamse resistance (not excreted thru kidney)
ADV. diarrhea, neausea, vomitting. interstitial nephritis, phlebitis.
TX. skin and soft tissue infections, systemic infections with beta.lactamse producing bateria
Methicillin
Bacteriostatic (cidal in growing cultures) Beta-lactoam antibiotic. selectively interfere with cell wall synthesis of bacteria: targeting penicillin binding protein AND autolysin activity degrading enzymes produced by bacteria
anti-staphylococal penicilin with beta.lactamse resistance
ADV. diarrhea, neausea, vomitting. TOXIC. only used to identify strain of S.Aureus! (MSSA)
TX. skin and soft tissue infections, systemic infections with beta.lactamse producing bateria
Carbenicillin
Indanyl Carbenicillin
Bacteriostatic (cidal in growing cultures) Beta-lactoam antibiotic. selectively interfere with cell wall synthesis of bacteria: targeting penicillin binding protein AND autolysin activity degrading enzymes produced by bacteria
Resistance: production of b-lactamase or penicillinase
TX. anti-pseudomonal. hospital aquired pneumonia due to resistant gram ne. (except klebsiella with inherent penicillinas activity)
ADV. rash, nausea, vomitting, dairrhea
enterobacter spp (-) escherichia coli (-) proteus mirabilis (-) proteus (indole pos) H. in fluenzae (-) **_ pseudomonas aeruginosa (-)_**
Piperacillin
Bacteriostatic (cidal in growing cultures) Beta-lactoam antibiotic. selectively interfere with cell wall synthesis of bacteria: targeting penicillin binding protein AND autolysin activity degrading enzymes produced by bacteria
Resistance: production of b-lactamase or penicillinase [combo with tazobactam]
TX. anti-pseudomonal. (most potent), hospital aquired pneumonia due to resistant gram ne. (except klebsiella with inherent penicillinas activity)
ADV. rash, nausea, vomitting, dairrhea
- enterobacter spp (-)
- escherichia coli (-)
- proteus mirabilis (-)
- proteus (indole pos)
- H. in fluenzae (-)
- pseudomonas aeruginosa (-)
Ticarcillin
Bacteriostatic (cidal in growing cultures) Beta-lactoam antibiotic. selectively interfere with cell wall synthesis of bacteria: targeting penicillin binding protein AND autolysin activity degrading enzymes produced by bacteria
Resistance: production of b-lactamase or penicillinase
TX. anti-pseudomonal. (most potent), hospital aquired pneumonia due to resistant gram ne. (except klebsiella with inherent penicillinas activity)
ADV. rash, nausea, vomitting, dairrhea
enterobacter spp (-) escherichia coli (-) proteus mirabilis (-) proteus (indole pos) H. in fluenzae (-) **_ pseudomonas aeruginosa (-)_**
Cefazolin
Cephalosporin 1st Generation
penicillin G substitutes. skin and soft tissue infections. surgical prophylaxis (crosses bone in orthopedic surgery).
resistant to staphylococaal penicillinase (covers MSSA).
TX. PEcK. proteus mirabilis, E.Coli, Klebsiella pneumoniae
Cephalexin
Cephalosporin 1st Generation
penicillin G substitutes. skin and soft tissue infections. surgical prophylaxis (crosses bone in orthopedic surgery).
resistant to staphylococaal penicillinase (covers MSSA).
TX. PEcK. proteus mirabilis, E.Coli, Klebsiella pneumoniae
Cefuroxime
Cephalosporin 2nd Generation
broader gram neg coverage, more b.lactamase resistance.
TX. community aquired pneumonia (H. influenzae)
ADV.
Cefotetan
Cephalosporin 2nd Generation
broader gram neg coverage, more b.lactamase resistance.
TX> intrabdominal and pelvic inflammations
ADV. may cause **disulfiram like ** reactions and block Vit K coagualtions factoris