NSAIDs Flashcards
a physiological response to tissue injury and infection
inflammation
other term for inflammation
inflammatory response
T or F: inflammation is not a synonym for infection
True
Mediate response to inflammation
vascular diameter, vascular permeability
increases blood flow to the area of injury, resulting in the heating and reddening of the tissue
vascular diameter (vasodilation)
allows leakage of fluid from the blood vessels into the damaged tissue, resulting in swelling (edema)
vascular permeability
when will NSAIDs be used
when inflammation is CHRONIC
During chronic inflammation - leukocytes arrive at the site of injury to _________ the invading pathogens and release __________
phagocytize; soluble mediators
soluble mediators released during chronic inflamm
cytokines, prostaglandins, leukotrienes
response to tissue injury
Acute inflamm
leading to progressive tissue destruction, as seen in chronic infections, autoimmunity, and certain cancers
Chronic inflamm
T or F: chronic inflamm can lead to autoimmunity and cancers
True
Type of inflamm wherein clotting and kinin systems are activated
Acute
fibrin strands to form clots, limiting the spread of infection into the blood
Clotting systems
Clotting systems - ________ strands to form clots, limiting the spread of infection into the blood
fibrin
Kinin system results in the production of ____________
bradykinin
a peptide that induces vasodilation and enhanced vascular permeability
bradykinin
dominate the landscape during acute inflammation
Non-protein–based soluble factors
represent a diverse family of lipid mediators with fundamental roles in physiology and disease
Eicosanoids
results from continuous exposure to the
offending element.
Chronic inflammation
Due to _____________, autoimmune diseases in which self-antigens continuously activate T cells, and cancers.
pathogen persistence
Hallmark of chronic inflammation
the accumulation and activation of macrophages and lymphocytes and fibroblasts
primary factors of chronic inflammation
Cytokines, chemokines, growth factors, and secreted/released enzymes, and ROS
The treatment of patients with inflammation involves two primary goals:
the relief of symptoms (NSAIDS) and the maintenance of function, slowing or arrest of the tissue-damaging processes is desirable, and
disease-modifying drugs (DMARDs) are necessary.
the most abundant of the eicosanoid precursors
Arachidonic acid (AA) (5,8,11,14-eicosatetraenoic acid)
an essential fatty acid, is converted to linolenic acid, followed by conversion to AA. (omega-6-fatty acid)
Linoleic acid
Major Effects of PG Synthesis Inhibition
- Analgesia
- Antipyresis
- Anti-inflammatory
- Anti-thrombotic
- Closure of Ductus Arteriosus
generates prostanoids for “housekeeping” functions such as gastric epithelial cytoprotection
COX-1
is the major source of prostanoids in inflammation and cancer.
COX-2
All NSAIDs inhibit
PG synthesis
Prostaglandin, prostacyclin (PG1) and thromboxane (TXA2) are produced from _____________
Arachidonic acid
The enzyme responsible for NSAIDs is ______________ also known as cyclooxygenase or COX
prostaglandin synthase
COX in 2 forms:
constitutive COX-1 and inducible COX 2
NSAIDs ADR for CNS
Headaches, tinnitus, dizziness, and rarely aseptic meningitis.
NSAIDs ADR for Cardiovascular
Fluid retention, hypertension, edema, and rarely myocardial infarction and congestive heart failure (CHF).
Gastrointestinal ADR of NSAIDs
Abdominal pain, dyspepsia, nausea, vomiting, and rarely ulcers or bleeding
Hematologic ADR of NSAIDs
Rare thrombocytopenia, neutropenia, or even aplastic anemia.
Hepatic ADR of NSAIDs
Abnormal liver function test results and rare liver failure.
Pulmonary ADR of NSAIDs
Asthma
Skin ADR of NSAIDs
Rashes, all types, pruritus
Renal ADR of NSAIDs
Renal insufficiency, renal failure, hyperkalemia, and proteinuria.
Aspirin irreversibly inhibits platelet _________
COX
aspirin’s antiplatelet effect lasts ____________ (the life of the platelet)
8–10 days
T or F: Aspirin is now rarely used as an anti-inflammatory medication
True
decreases the incidence of transient ischemic attacks, unstable angina, coronary artery thrombosis with myocardial infarction, and thrombosis after coronary bypass grafting
Aspirin
Aspirin ADR
gastric upset (intolerance) and gastric and duodenal ulcers. Hepatotoxicity, asthma, rashes, GI bleeding, and renal toxicity rarely if ever occur at antithrombotic doses
Aspirin is contraindicated inpatients with ___________.
hemophilia
Long-term low-dose aspirin usage in patients with type 2 diabetes increases risk for ___________
GI bleeding
NONACETYLATED SALICYLATES
Magnesium choline salicylate, sodium salicylate, and salicyl salicylate
All nonacetylated salicylates are effective anti-inflammatory drugs, and they _______ (inhibit/do not inhibit) platelet aggregation
do not inhibit
non acetylated salicylates is preferable when COX inhibition is undesirable such as in patients with ________-
asthma, bleeding tendencies, renal dysfunction (under close supervision)
were developed in an attempt to inhibit prostaglandin synthesis by the COX-2 isozyme induced at sites of inflammation without affecting the action of the constitutively active “housekeeping” COX-1 isozyme found in the GI tract, kidneys, and platelets
Cox 2 selective inhibitors
COX-2 selective inhibitors, or _______, were developed in an attempt to inhibit ____________ by the COX-2 isozyme induced at sites of inflammation without affecting the action of the constitutively active “housekeeping” COX-1 isozyme found in the GI tract, kidneys, and platelets
coxibs; prostaglandin synthesis
COX-2 selective inhibitors, or coxibs, were developed in an attempt to inhibit prostaglandin synthesis by the COX-2 isozyme induced at sites of inflammation __________ affecting the action of the constitutively active _____________ found in the ______________
without: “housekeeping” COX-1 isozyme; GI tract, kidneys, and platelets
COX-2 inhibitors at usual doses have no impact on ___________ which is mediated by ____________ produced by the ________
platelet aggregation; thromboxane; COX-1 isozyme
have no impact on platelet aggregation, which is mediated by thromboxane produced by the COX-1 isozyme.
COX-2 inhibitors at usual doses
do not offer the cardioprotective effects of traditional nonselective NSAIDs
COX-2 inhibitors
a benzenesulfonamide
Celecoxib
is a selective COX-2 inhibitor, about 10–20 times more selective for COX-2 than COX-1
Celecoxib
is indicated for the treatment of OA, RA, JRA, and AS
Celecoxib
Usual dose of Celecoxib
100–200 mg bid
Celecoxib at _________ has also shown efficacy as an adjunctive therapy for improving __________, most likely due to suspected __________ in the disorder
400 mg/d; schizophrenic symptoms; neuroinflammation
racemic acetic acid derivative whose mechanism of action has been described as relatively COX-2 selective
Etodolac
Etodolac is indicated for the treatment of __________
OA, RA, and JRA
recommended dosage of etodolac
300 mg bid–tid or 500 mg bid initially, then 600 mg/d
an enolcarboxamide related
to piroxicam and is a relatively selective COX-2 inhibitor, particularly at 7.5 mg/d
Meloxicam
T/F: even at subtherapeutic doses, meloxicam’s blockade of thromboxane A2 does not reach levels that result in decreased in vivo platelet function
True
Indications and Dosage of meloxicam
OA, RA, and JRA patients. Dosage is 7.5–15 mg/d
phenylacetic acid derivative
Diclofenac
difluorophenyl derivative of salicylic acid
Diflunisal
propionic acid derivative
Flurbiprofen
simple phenylpropionic acid derivative
Ibuprofen
a naphthyl-propionic acid derivative
Naproxen
another propionic acid derivative NSAID
Oxaprozin
pyrrole alkanoic acid derivative
Tolmetin
an indole derivative) and a potent nonselective COX inhibitor that may also inhibit phospholipase A and C, reduce neutrophil migration, and decrease T-cell and B-cell proliferation
Indomethacin
Indomethacin may also inhibit
phospholipase A and C, reduce neutrophil migration,
Indomethacin may also decrease
T-cell and B-cell proliferation
T/F: Because of perceived toxicity, indomethacin is used less commonly than other NSAIDs
True
a propionic acid derivative that inhibits both COX (nonselectively) and lipoxygenase.
Ketoprofen
is the only nonacid NSAID in current use and resembles naproxen in structure
Nabumetone
an enolcarboxamide derivative is a nonselective COX inhibitor
Piroxicam
Piroxicam at high concentrations also inhibits _________, decreases
_______, and inhibits __________.
polymorphonuclear leukocyte migration; oxygen radical production; lymphocyte function
is a sulfoxide nonselective prodrug whose active metabolite is a nonselective COX inhibitor
Sulindac
Asprin ____________ (reversibly/irreversibly) acetylates and blocks platelet COX
irreversibly
T/F: non-COX-selective NSAIDs are reversible inhibitors
True
The selective COX-2 inhibitors (do not affect/affects) platelet function at their usual doses
do not affect
T/F: The in vivo efficacy of COX-2-selective drugs equals that of the older NSAIDs, while GI safety may not be improved
False; may be improved
selective COX-2 inhibitors increase the incidence of ____________, ____________ and _________
edema, hypertension, and possibly myocardial infarction
T/F: all newer NSAIDs are analgesic, anti-inflammatory, and antipyretic, and all including the COX-2–selective agents and the nonacetylated salicylates inhibit platelet aggregation.
false; except the COX-2–selective agents and the nonacetylated salicylates
T/f: NSAIDs are all gastric irritants and can be associated with GI ulcers and bleeding as well
True
T/F: the newer agents tend to cause less GI irritation than aspirin
True
seems not to be effective for gout, and is less effective than other NSAIDs
(eg,indomethacin) for AS Ankylosing spondylitis
tolmetin
T/F: The GI and renal side effects of ketorolac limit its use
True
best for renal insufficiency
nonacetylated salicylates
__________ and _______are associated with more liver function test abnormalities than other NSAIDs
Diclofenac and sulindac
___________ is probably safest for patients at high risk for GI bleeding but may have a higher risk of cardiovascular toxicity
celecoxib