Final: NSAIDs and inflammation Flashcards
prostaglandins
inflammation
arachidonic acid
precursor of prostaglandins
aspirin mech
acetylates serine in COX acitve site and blocks acces to arachidonic acid
NSAIDs mech
block the opening of both COX-1 and COX-2 by
interacting with Arg 120 in both enzymes in a reversible manner
COXibs
block only the opening of the COX-2 enzyme in
an irreversible manner
ASA
COX-1 & Cox-2
cox 1,2 thrombotic effects
cox 1 produces thrombotic effects b/c platelets (aspirin antithrombotic)
cox2 prevents antithrombotic effects b/c endothelial blood vessel cells
coxibs and non-selective NSAIDs hypertension and acute renal failure 2 mechanisms
Decreasing renal blood
flow by inducing leukotriene
production
increase na+ retention, increase blood pressure
Aspirin (acetylsalicylic acid), Indomethacin, Sulindac
acetic acid nsaids
Ibuprofen, Naproxen
propionic acid nsaids
antiinflammatory
Piroxicam
Oxicam nsaid
nsaids pain and fever
inhibit due to effects of PGs on nociceptors and
hypothalamus
Potential Side Effects of NSAIDs
A- GI upset
B- Aspirin/ NSAIDs-induced asthma
C- Reyes syndrome
D- high BP/ renal failure/ stroke
E- bleeding
Acetaminophen
Derived from coal tar
NOT an anti-inflammatory drug
hepatotoxic