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Arachidonic acid cascade II
Pharm II
31
Science
Professional
09/18/2011

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Term
Aspirin (acetyl-salicylic acid) pharmokinetics
Definition
orally ingested--rapidly absorbed in part of the stomach, but mainly from the uper small intestine
-t1/2 in plasma is 15 minutes
-highly plasma protein bound
Term
Aspirin Mechanism of action
Definition
irreversibly and non-selectively inhibits fatty acid cyclo-genases--stop PGG2 (precursor to PG's, PGI2 and Thromboxanes)
Term
Aspirin other possible mechanism
Definition
acetylation of COX-2 leading to increased production of lipoxins
-NFK-beta activation and production of other eicosanoids
Term
Aspirin pharm properties
Definition
-Anti-pyretic action: reduces body temp in febrile states. Inhibits synthesis and release of PG's in the CNS
-Analgesia: effective against low to moderate pain. Inhibits peripheral synthesis and release of PG's in inflammation and averts the sensitization of pain receptors to mechanical stimulation or other mediators
-Anti-inflammatory action: inhibits PG synthesis, and thus decreases inflammation
-uncouples oxidative phosphorylation
Term
Aspirin FDA labeled indications
Definition
Cerebrovascular accident (prophylaxis), fever, generalized aches and pains, headache, migraine, myocardial infarction, myocardial infarction prophylaxis, osteoarthritis, pain, rheumatoid arthritis
Term
Aspririn adverse effects
Definition
-gastric irritant, can cause ulceration (inhibits synthesis of PGE2 and PGI2, cytoprotective of gastric mucosa)
-increased bleeding time by inhibiting platelet aggregation (inhibition of fatty acid cyclo-oxygenase)
-prolongation of gestation (inhibition of cyclo-oxygenase)
Term
Hypersensitivity to aspirin
Definition
a non-immunological, anaphylactoid response
Term
Hypersensitivity to aspririn signs and symptoms
Definition
-vasomotor rhinitis
-angioneurotic edema
-urticaria
-bronchial asthma
-nasal polyposis
Term
explanation for aspririn hypersensitivity response
Definition
inhbits fatty acid cyclo-oxygenase, thus shifts the released arachidonic acid towars the leukotriene pathway. The LT's responsible for anaphylactoid response
Term
Aspirin and ethanol
Definition
decreased teh 1st pass metabolism of ethanol
Term
Salicylism?
Definition
mild, chronic salicylate intoxication; usually occures after large repeated doses of aspirin
Term
Salicylism symptoms
Definition
headache, dizziness, tinnitus, hearing difficulty, dimness of vision, nausea and vomiting, disturbance in acid-base balance, hemorrhagic phenomena
Term
other aspirin toxicities
Definition
acute poisoning-accidental or deliberate
-reye's syndrome in kids
-end-stage renal failure associations
-renal toxicity of NSAID's
Term
Indomethacin (INDOCIN) mechanism of action
Definition
one of the most potent inhibitors of fatty acid cyclo-oxygenase thus inhibiting prostaglandin, thromboxane and prostacyclin synthesis
Term
Indomethacin pharm properties
Definition
-more potent than aspirin, although show no superiority over aspirin
-analgesic
-antipyretic
-anti-inflammatory
Term
Indomethacin FDA labaled indications
Definition
ankylosing spondylitis, gouty arthritis, osteoarthritis, pain (acute shoulder), patent ductus arteriousus, rheumatoid arthritis
Term
indomethacin toxicity and adverse effects
Definition
-GI complaints
-hypersensitivity--usually shows cross-reactivity with aspirin
-CNS effects--headache, vertigo, somnolence
Term
indomthecin therapuetic uses
Definition
-rheumatoid arthritis
Barter's syndrome
patent ductus arteriousus
-prevent spontaneous abortion
Term
Proprionic acid derivatives
Definition
-usually better tolerated than aspirin, indomethacin and the pyranzolones
-inhibit cyclo-oxygenase
-can produce aspirin like hypersensitivity
Term
Ibuprofen (Motrin, Brufen) fda labeled indications
Definition
-fever
-headache
-migraine
-osteoarthritis
-pain
-primary dysmenorrhea (pain during menses)
-rheumatoid arthritis
Term
Naproxen (Naprosyn, others) indications
Definition
-ankylosing spondylitis (spine arthritis)
-brusitis
-fever
gout, acute
Headache, osteoarthritis, pain, primary dysmenorrhea, rheum arth, tendinitis
Term
Ketorlac tromethamine (Toradol) pharmacokinetics
Definition
-intramuscular injection
-99% plasma protein bound
-some transpiacental transfer, may inhibit platelet aggregation in infants when used for labor
-clearance reduced in elderly and those with renal disease, lower dosages must be used
Term
Ketorlac tromethamine (toradol) indications
Definition
-extraction of cataract
-pain, short term
-pain in eye--refractive keratoplasty
-seasonal allergic conjuctivitis
Term
ketorolac tromethamine properties
Definition
used for short term management of post op moderate to severe pain
-shown to be superior to morphine and meperidine
-may be used with opiates
-lacks repiratory depresent effects of narcotic analgesics
-limit duration of use because of renal failure
Term
Celecoxib (celebrex) mechanism and pharmokinetics
Definition
-selective Cox II inhibitor
-absorption decreased by food
-effective t1/2 = 11 hours
-high plasma protein binding
-metabolized by CYP 2C9
Term
celecobix indications
Definition
-ankylosing spondylitis, familial multiple polyposis syndrome, juvenile rhem arth, osteo arth, acute pain, primary dysmenorrhea, rhem arth
Term
celecobix adverse effects
Definition
some dyspepsia
-increase incidence of cardiovascular disease
Term
acetaminophen (tylenol, tempra) pharmacokinetics
Definition
-rapidly and completely absored from teh GI tract after oral admin
-t1/2 = 3 to 4 hours
Term
acetameniphan pharm actions
Definition
-analgesic
-anti-pyretic
-weak anti-inflammatory--in therapeutic doses it prob has no anti inflam action
Term
acetameniphan indications
Definition
dysmenorrhea
fever
headache
pain, mild to moderate
Term
aceameniphan toxicity
Definition
-tolerated well in recommended doses
-hepatic necrosis--also associated with alcohol abuse
-renal tubular necrosis
-methemoglobinemia
-hemolytic anemia
-increased risk of end stage renal disease
-treatment of toxicity--use acetylcysteine (mucomyst) to bind hepatotoxic metabolite
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