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62 Cards in this Set
- Front
- Back
APAP major structural feature
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fxnal amide
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ASA mechanism
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NSAID that inhibits COX1/2 irreversibly (only drug that inhibits irreversibly)
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ASA major structural feature and significance of this
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has an ester; so metabolized by esterases (Phase I)
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Main structural feature of Ibuprofen and metabolism
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1)isobutyl
2)Phase 2 rxns |
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Indomethacin is a ___ derivative
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indo derivative
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Etodolac is a ___ derivative
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perro derivative
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Nabumetone is a ___ drug...
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prodrug, activated by CYP450
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...induce COX-2 gene transcription (6)
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1)oxidative stress
2)injury 3)inflammation/pain 4)ischemia 5)seizures 6)neurodegenerative diseases |
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NSAIDS dual insult of GI
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1)primary insult is via direct acid damage due to their free hydroxyl
2)secondary insult via PG inhibition |
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Celebrex
a)has a ___ structure b)dosing for OA/RA c)Does it GI side effects d)main structural feature |
a)sulfonamide structure
b)200mg for OA, 400mg for RA c)YES, only 90% selective for COX-2 d)diaryl substituted pyrazole |
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First NSAID
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Quinine
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How do NSAIDs reduce fever?
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decr PG's in the hypothalamus, which is the body's thermostat
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Precursor to PG
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arachidonic acid
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3 sources of arachidonic acid and what is main source
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1)CELL MEMBRANE PHOSPHOLIPID ESTERS**
2)cholesterol esters 3)triglyceride esters |
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Arachidonic acid is created by what enzyme?
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phospholipase A2
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Arachidonic acid interacts w/ 2 enzymes to make 2 products what are they?
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1)lipoxygenase = LK
2)cyclooxygenase = PG |
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COX 1 fxn (2)
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1)CONSTITUTIVE FORM
2)found in blood vessels, stomach, tissues where PG is synthesized |
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ADR's of COX non-specific NSAIDS (5)
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1)GI irritation
2)block platelet aggregation 3)inhibit uterine motility 4)prolong pregnancy 5)hypersensitivity rxns (seen mostly w/ ASA) |
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Salicylates ex (4)
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1)ASA (prototype)
2)salsalate 3)diflunisal 4)Choline salicylate |
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Effects of salicylates (3)
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1)analgesic
2)antipyretic 3)anti-inflamm |
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Salicylates absorption
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rapidly absorbed in stomach, upper intestine, and skin by passive diffusion
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Antipyretic effect of salicylates (3)
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1)lowers abnormally high body temp, wont alter normal temp
2)heat production not altered 3)heat dissipation is enhanced by peripheral blood flow and sweating (notice red face) |
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ASA toxicity (3)
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1)hypersensitivity
2)acute toxicity (lethal dose is 10-30g, but can survive 100g) 3)leads to metaboic acidosis |
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Treatment of acute ASA toxicity (5)
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1)induce vomiting
2)oral admin of charcoal 3)if acidotic, Na bicarb is administered to incr blood pH 4)exchange transfusion (infants) 5)hemodialysis (adults) |
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Chronic ASA toxicity? (7)
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SALICYLISM
a)HA b)dizziness c)ringing ears/hard hearing d)dim vision e)confusion f)n/v g)hyperventilation |
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Pharmacologic Axn of Sulindac (2)
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1)is a sulfoxide prodrug, metabolized to active sulfide metabolite
2)major axn is anti-inflamm, more potent than ASA |
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Sulindac
a)PK (2) b)ADR (3) |
a)rapidly absorbed, half-life is 8hrs
b)thrombocytopenia, agranulocytosis, nephritic syndrome |
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Sulindac therapeutic use (3)
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1)arthritic conditions
2)inhibits intestinal polyposis 3)inhibit colon cancer |
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Ketorolac pharmacologic effects (3)
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a)anti-inflamm like other NSAIDs
b)greater analgesic potency 3)can be used w/ opoid and reduces opoid requriement by 25-50% |
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Etodolac pharmacologic effects (3)
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1)GREATER COX2 SELECTIVITY THAN MOST OTHER NON-SPECIFIC NSAIDS***
2)analgesic and anti-inflamm 3)some uricosuric activity |
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Proprionic Derivatives (6)
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1)ibuprofen (prototype)
2)fenoprofen 3)flurbiprofen 4)ketoprofen 5)naproxen 6)oxaprozin |
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Pharmacological effects of proprionics (3)
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Analgesia, antipyresis, anti-inflamm similar to ASA
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Proprionic therapeutic uses (3)
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1)arthritis (general)
2)analgesia 3)dysmenorrhea |
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Oxicams ex (2)
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1)piroxicam (feldene) (prototype)
2)meloxicam |
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Pharmcological effects of oxicams (3)
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1)anti-inflamm, analgesia, antipyresis
2)non selective COX inhibitor 3)inhibits WBC migration & inhibits oxygen free radical production = increased anti-inflammatory |
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PK of Oxicams (1)
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1)45-72hr half-life due to enterohepatic recycling
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Therapeutic uses of oxicams (4)
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1)long-term treatment of arthritic conditions
2)postop pain 3)acute muscle pain 4)gout |
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Naphtylalkones ex
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a)nabumetone (relafen) (prototype)
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Pharmacological effects of Naphtylalkones (3)
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1)anti-inflamm, antipyresis, analgesia
2)prodrug (produces a longer half life) 3)no real adv over other NSAIDs |
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Therapeutic uses of Naphtylalkones (2)
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1)arthritic conditions
2)acute pain |
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Fenamates ex (2)
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1)meclofenamate (prototype)
2)mefenamic acid |
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Fenamates pharmacological effects (3)
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1)anti-inflamm, analgesia, antipyretic
2)non-selective COX inhibitor 3)ALSO inhibits PLA2 |
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Fenamates therapeutic uses (2)
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1)short term treatment of arthritis and acute pain
2)should NOT be used for more than 1 week |
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Celecoxib therapeutic uses (2)
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1)RA/OA if pt experiences GI problems w/ other NSAIDS
2)reduces occurrence of colon polyps |
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T/F?
a)ASA was first drug used therapeutically to treat pain and inflammation b)COX1 is found primarily in areas of inflammation c)Sulindac is a prodrug that is metabolized to an active metabolite d)NSAIDs produce an antipyretic effect by enhancing peripheral blood flow |
a)F
b)F c)T d)T |
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T/F?
a)Morphine has a lower potency and a greater efficacy than ASA b)APAP is a COX3 inhibitor c)Etodolac has much longer therapeutic duration of action than Piroxicam d)Celebrex has been shown to inrease the occurrence of colon polyps |
a)F
b)T c)F d)F |
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Morphine structural features (4)
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1)A,B,C,D,E rings
2)1 phenolic OH 3)D ring is a piperidine ring making it basic (forming salts) 4)ring C is L-cyclic (one double bond) |
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MorphinAN difference from morphine (2)
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1)NO E RING
2)loss on NONphenolic OH |
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Morphine is based on...
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Phenanthrene
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Narcotic def.
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binds centrally to relieve constant chronic pain
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4 different opoid receptors (and which 2 do narcotics bind to)
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1)mu***
2)kappa*** 3)delta 4)sigma |
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Codeine is...
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3-methoxy morphine
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DXM is..
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3-methoxy derivative of (+)dextro-levorphanol
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4 most important things in opoid structure (and which is not so necessary)
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1)ring D
2)ring A 3)N 4)phenolic OH (not so necessary) |
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Benzomorphans difference from morphine?
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NO ring C/E
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4-phenylpiperidines
a)difference from morphine b)2 ex |
a)A/D ring only
b1)axial-4-phenyl b2)equatorial-4-phenyl |
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Methadone difference from morphine (3)
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1)no piperidine ring
2)ring folds to make a pseudopiperidine ring 3)has a dimethyl amino |
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What is heroin? and why so addictive
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3-6 acetyl morphine
nonpolar so goes strait to brain |
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Meperidine
a)difference from morphine b)typical use |
a)4-phenyl piperidine ESTER
b)short acting analgesic commonly used in child birth |
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Pentazocine difference from morphine (3)
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a)benzomorphone
b)A,B,D rings only c)has dimethylallyl group |
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dimethylallyl group fxn
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imparts agonist/antagonist effects
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Fentanyl properties (2)
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1)anilido/aniline group
2)80x more potent than morphine |