Kelli Exam 3 Flashcards
Arylpropionic acid analog examples
ibuprofen, naproxen, fenoprofen, ketoprofen, flurbiprofen
Arylpropionic acid analog MoA/info
non-selective COX inhibitor
only active in the S form
Oxicam (enolic acid) examples
meloxicam, piroxicam
Oxicam (enolic acid) MoA/info
enolic hydroxyl group interacts with Tyr385 and Ser530
Long half life
Bulky so COX 2 is targeted more
Diaryl heterocyclic examples
celecoxib, rofecoxib, valdecoxib
Diaryl heterocyclic MoA/info
bulky so targets COX 2
Sulfur containing group binds to additional binding pocket
Increased risk of cardiovascular events
N-arylanthranilic acid examples
mefenamic acid, flufenamic acid, meclofenamic acid
N-arylantranilic acid MoA/info
The oxygen in salicylic acid is switched out for a nitrogen
non-selective COX inhibitor
P-aminophenol derivative example
acetaminophen
P-aminophenol derivative MoA/info
may act on COX 3 as an anti-inflammatory in the CNS
not considered a traditional NSAID
nitrogen-containing salicylate examples
mesalamine, olsalazine, sulfasalazine
nitrogen-containing salicylate MoA
not inhibition of COX - maybe other mediators?
indole-3-acetic acid derivative example
indomethacin
indole-3-acetic acid derivative MoA/info
binds tightly to COX 1 and can be functionally irreversible. It loses its affinity if the methyl is taken off
widespread intolerable side effects
arylacetic and arylpropionic acid derivative examples
sulindac, ketorolac, tolmetin, diclofenac, etodolac
arylacetic and arylpropionic acid derivative MoA/info
competes with arachidonic acid
arylacetic and arylpropionic acid derivatives selective for COX 2
diclofenac and etodolac bind to Tyr385 and Ser530
arylacetic and arylpropionic acid derivatives selective for COX 1
ketorolac and tolmetin
Active sites of COX binding pocket and what they do
Arg120: interacts with the carboxylate of the fatty acid
Ser530: the residue acetylated by aspirin
Tyr385: abstracts the pro-S hydrogen to initiate the COX reaction
PGI location and effects
endothelial cells
vasodilation and decreased platelet aggregation
TXA location and effects
platelets
vasoconstriction and platelet aggregation
PGF location and effects
uterus
vasoconstriction
PGE location and effects
most cells
erythema, edema, pain, fever
PGD location and effects
mast cells and brain
erythema, edema, pain, decreased platelet aggregation
Zileuton MoA
inhibits the 5-lipoxygenase that converts arachidonic acid to 5-HPETE, preventing formation of subsequent leukotrienes
Zafirleukast and Montelukast MoA
reversible and competitive inhibitor of the cysteinyl-leukotriene receptor
Cromolyn and Nedocromil MoA
likely inhibits chloride channels, which may in turn inhibit calcium availability
Lodoxamide and Olopatadine MoA
prevention of antigen-stimulated release of histamine and other inflammatory mediators, and may also prevent calcium influx into mast cells