Shared Flashcard Set

Details

Anmicrobials VII DNA Synthesis Antagonists and Folate Antag
James W Leahy Ph.D.
14
Pharmacology
Professional
08/27/2013

Additional Pharmacology Flashcards

 


 

Cards

Term
Cell Wall Synthesis
Definition
Beta-­‐Lactams
• Polymixins
• Vancomycin
Term
Protein Synthesis 30S Ribosomal Inhibitors
Definition
• Tetracyclines
• Streptomycin
Term
Protein Synthesis 50S Ribosomal Inhibitors
Definition
• Macrolides
(erythromycin,
azithromycin)
• Chloramphenicol
• Oxazolidinones
Term
Antifolates
Definition
serves as a conduit for introducing 1 carbon during molecular processing
Humans can't make folic acid, bacteria can't use what it hasn't made.
Term
Pyrimethamine
Definition
(Daraprim)
first dihydrofolate reductase inhibitor
Primarily used as antimalarial
Resistance from mutation to dihydrofolate reductase
Term
Trimethoprim
Definition
(TRI or TMP)[proloprim, triprim)
Most commonly used dihydrofolate reductase inhibitor
F = 1
T1/2 10hr
50% protein bound
DDI: dofertilide (antiarrhythmia)
Most DDI;s due to MOA

Can't be used with other dihydrofolate reductase inhibitor, but can be used with sulfa drugs

DO NOT TAKE WITH METHOTREXATE!!!!
Term
Trimethoprim/sulfamethoxazole
Definition
(co-­‐trimoxazole)[Septra, Bactrim)
dihydrofolate reductase inhibitor/Sulfa
Used for treatment of respiratory infections like PNA
Typical Sulfa ADRs but less due to small dose
Term
Target of quinolones
Definition
topoisomerase
Term
Norfloxacin
Definition
(Noroxin)
Father of fluoroquinolone
100x affinity to bacterial DNA gyrase (topoII) and Topo IV than mammalian cells
approved for genitourinary infections
Not really bioavailible
not protein bound
T1/2 3-4hr
Inhibits 3A4
Term
Fleroxacin
Definition
(Quinodis)
Gold standard
Long T1/2 (12hrs)
Phototoxicity
Not used in US, but largly used in china for UTI and gonorrhea
Term
Ciprofloxacin
Definition
(Cipro)
One of most prescribed in US and world
Broad spectrun (+ and -)
Anthrax
F = 0.6
40% plasma binding
Inhibits 3A4 and 1A2
Term
Levofloxacin
Definition
(Levaquin)
2nd behind cipro
difficult to make (chiral center)
1st line for PNA and bacterial prostatitis
F=1
better than cipro
no cyp inhibition
blocks efflux pumps
Term
BB for fluoroquinolines
Definition
potential tendoni,s/tendon damage and for exacerbation of myasthenia gravis
Term
RNA polymerase inhibitors
Definition
Natural product
treatment of TB
Component of Rifater (w/ isoniazid and pyrazinamide, which inhibits bacterial peroxidase and fatty acid synthase and allow synergy)
Supporting users have an ad free experience!