Exam 3 Summaries Flashcards
What are the 3 categories of cell wall synthesis inhibitors?
- Beta lactams
- Glycopeptides
- Lipopeptides
What are the 7 categories/drugs that are protein synthesis inhibitors?
- Aminoglycosides
- Oxazolidinones
- Streptogramins
- Tetracyclines/Glycylcylclines
- Macrolides
- Cloramphenicol
- Clindamycin
What are the 2 metabolic inhibitors?
- Sulfonamides
- Trimethorpim
(TMP-SMX)
What are the 2 nucleic acid synthesis inhibitors?
- FQ
2. Metronidazole
What are the 2 UT agents?
- Nitrofurantoin
2. Methenamine
What are the 4 categories of beta lactams?
- Penicillins (plus beta-lactamase inhibitor combinations)
- Cephalosporins
- Carbapenems
- Monobactams
What are the 5 categories of penicillin?
- Natural
- Penicillinase-resistant penicillin
- Aminopenicillin
- Carboxypenicillin
- Ureidopenicillin
What are the 2 natural penicillins?
Penicillin G and VK
What are the 4 penicillinase-resistance penicillins?
Nafcillin, Oxacillin, Methicillin, Dicloxacillin
What are the 2 aminopenicillins?
Ampicillin, Amoxicillin
What is the 1 carboxypenicillin?
Ticeracillin
What is the 1 ureidopenicillin?
Piperacillin
What are the 4 beta-lactamase inhibitor combinations?
Augmentin, Unasyn, Timentin, Zosyn
What is Augmentin?
Amoxicillin-clavulanate
What is Unasyn?
Ampicillin-sulbactam
What is Timentin?
Ticarcillin-clavulanate
What is Zosyn?
Piperacillin-tazobactam
What are the 6 first generation Cephalosporins?
- Cefadroxil
- Cefazolin
- Cephalexin
- Cephalothin
- Cephapirin
- Cephradine
What are the 9 second generation Cephalosporins?
- Cefactor
- Cemandole
- Cefonicid
- Cefprozil
- Cefuroxime
- Loracarbef (carbacephem)
- Cefmetazole (cephamycin)
- Cefotetan (cephamycin)
- Cefoxitin (cephamycin)
What are the 10 third generation Cephalosporins?
- Cefdinir
- Cefditoren
- Cifixime
- Cefoperazone
- Cefotaxime
- Cefpoxodime
- Ceftazidime
- Ceftibuten
9 Ceftizoxime - Ceftriaxone
What is the 1 fourth generation Cephalosporin?
Cefepime
What are the 2 fifth generation cephalosporins?
Ceftaroline and Ceftobiprole
What is the 1 sixth generation cephalosporin?
Ceftolozane-tazobactam
What is the 1 seventh generation cephalosporin?
Ceftazidime-avibactam
What are the 4 carbapenems?
- Doripenem
- Imipenem
- Meropenem
- Ertapenem
What is the 1 monobactam?
Aztreonam
What are the 5 glycopeptides?
- Vancomycin
- Tecioplanin
- Dalbavancin
- Televancin
- Oritavancin
What is the 1 lipopeptide?
Daptomycin
What are the 4 important aminoglycosides?
- Amikacin
- Genamicin
- Streptomycin
- Tobramycin
What are the 3 macrolides?
- Erythromycin
- Clarithromycin
- Azithromycin
What is the 1 important streptogramin?
Synercid (Quinupristin-Dalfopristin)
What are the important tetracyclines/glycylcyclines?
Tetracycline, doxycycline, minocycline
G: Tigecycline
What are the 2 Oxazolidinones?
Linezolid and Tedizolid
What are the 3 important FQs?
- Ciprofloxacin
- Levofloxacin
- Moxifloxacin
What are the MOA for the cell wall synthesis inhibitors?
Beta lactam: bind/inhibit PBP (transpeptidase step)
Glycopeptides: inhibit synthesis/assembly of second stage of cell wall synthesis (bind D-ala D-ala)
Lipopeptides: binds membrane, depolarizes, inhibits synthesis
What are the MOA of the protein synthesis inhibitors?
30s binding: aminoglycosides (irreversible), tetracyclines/glycylcylcines (reversible)
50s binding: all others (oxazolidinones, streptogramins, chloramphenicol, clindamycin, macrolides)
What is the MOA of TMP-SXT?
Sulfonamides: inhibit dihydropteroate synthetase (inhibit PABA conversion)
Trimethoprim: inhibit dihydrofolate reductase (inhibit dihydrofolate conversion)
What is the MOA of the nucleic acid inhibitors?
FQ: inhibit DNA gyrase and topoisomerase IV
Metronidazole: ferredoxins, DNA damage
What is the MOA of UT agents?
Nitrofurantoin: binds ribosomal proteins, inhibits translation, inhibits bacterial respiration/pyruvate metabolism
Methenamine: converted in acidic pH to formaldehyde, which denatures things
What are the important MOR for beta lactams?
- Beta-lactamase production
- Decreased penetration
- PBP alteration
What is the important MOR for glycopeptides?
- Modification of D-ala D-ala binding site to D-lactate
What are the important MORs for macrolides, clindamycin, and streptogramins?
- Altered target site (erm gene)
2. Efflux pump (mef gene)
What are the important MORs for TMP-SXT?
Sulfonamides: PABA overproduction, change in synthetase
Trimethoprim: resistant reductase
What is the important MOR for methenamine?
Alkaline urine
Most antibiotics are bactericidal. Which are bacteriostatic?
- Oxazolidinones (except against S. pneumoniae)
- Chloramphenicol (except against H. influenzae, S. pneumoniae, N. meningitidis)
- Tetracyclines (cidal at high concentrations)
- Clindamycin (cidal at high concentrations)
- Macrolides (cidal at high concentrations)
Also: Synercid and TMP-SMX components are static alone
Penicillin is bactericidal except against ___.
Enterococcus
Most antibiotics are time-dependent. Which are concentration-dependent?
- Azithromycin
- FQ
- AG
- Metronidazole
- Daptomycin (lipopeptide)
Unknown: Synercid
Which 6 antibiotics or classes of antibiotics have activity against Gram positive organisms only?
- PR penicillin
- Streptomcyin
- Glycopeptides
- Lipopeptides
- Oxazolidinones
- Synercid
Which 6 antibiotics or classes of antibiotics have activity against Gram negative organisms only?
- Carboxypenicillin
2/3. 3rd and 4th generation cephalosporins - Monobactams
5/6. Tobramycin and amikacin
Which 10 antibiotics or classes of antibiotics have activity against organisms in all classes?
- Natural penicillin
- Ureidopenicillin
- Beta-lactamase inhibitors
4/5. 1st and 5th generation cephalosporins - Carbapenems
7/8. Tetra/glycylcyclines - Macrolides
- FQ
Which 4 antibiotics or classes of antibiotics have activity against Gram positive and Gram negative organisms?
- Aminopenicillins
- 2nd generation cephalosporins
- Gentamicin
- TMP-SMX
Which antibiotic has activity against Gram positive and anaerobic organisms?
Clindamycin