non-opioids Flashcards
what dos NSAID stand for?
non-steroidal anti-inflammatory drugs
which alarmin can produce degranulation of mast cells?
IL-33
histamine is an inflammatory mediator released by ________.
mast cells
histamine receptor activity on vascular endothelium increases intracellular Ca2+. what are the 2 affects of this?
- NO produced in endothelium relaxes smooth musc (vasodilation)
- MLCK mediated contraction of capillary endothelium makes capillary leaky
anti-inflammatory properties and pain relief comes from attenuating the production of ________.
prostaglandins
prostaglandins increase ________ and _______.
pain sensitization, inflammation
prostaglandins are all derived from __________.
arachidonic acid
which two enzymes send arachidonic acid down a path to become prostaglandins?
COX1 and COX2 (mainly responsible for inflammation)
how many G protein coupled receptors does PGE2 interact with?
4
PGE2 activated G-alpha-stimulatory which increases ______ activity, which leads to phosphorylation of the _______ type nociceptor which increases pain sensitivity.
PKA, TRP
prostaglandins can also sensitize pain response via _____________.
central sensitization
how to all NSAIDs work?
inhibition of COX enzymes
acetylsalicylic acid (aspirin) is a ________ inhibitor, about 100x better inhibitor of COX__, which is the ________ selectivity of the commonly used NSAIDs
irreversible, 1, worst
what does COX2 produce after inhibition?
hydroxyeicosatetraenoic acid
ibuprofen, naproxen, and acetaminophen are all _______ inhibitors of COX1 and COX2.
reversible
rank NSAIDs according to COX2 selectivity
acetylsalisylic acid, ibuprofen, acetaminophen, naproxen (most sensitive)
aspirin targets _______, _____, ______ and _______.
pain, fever, thrombosis, and inflammation
what do ibuprofen and naproxen target?
pain, fever, inflammation
what does acetominophen target?
pain and fever
regarding aspirin, cox enzymes inhibit _________, which then inhibits _________. since aspirin is an irreversible inhibitor, only a _____ dose is needed.
thromboxane A2, platelet aggregation, low
3 possibilities why acetaminophen is not anti-inflammatory
- unique COX enzyme in CNS is its target
- MOA on COX enzymes is different and responsible for the effect
- providing pain relief through a different mechanism (cannabinoid receptor)
the most effective analgesia is a combo of what?
optimum dose of NSAID + additional opioid