(3) Blood & Inflammation: Anti-inflammatory (3.1-3.2) Flashcards
What is the precursor molecule to prostanoids and leukotrienes?
Arachidonic acid
What enzyme liberates arachidonic acid from the cell membrane?
Phospholipase A2
Which COX enzyme is induced by inflammation?
COX-2
List 2 functions of COX-1
(1) TXA2 ⇒ Platelet aggregation
(2) Gastric cytoprotective prostaglandins
Where is COX-2 expressed?
(1) Vascular endothelial cells
(2) Smooth muscle
List 5 functions of COX-2
(1) PGI2⇒ Vasodilation
(2) Inhibits platelet aggregation
(3) Fever
(4) ↑ Pain sensitivity
(5) ↑ Vascular permeability
Which COX enzyme dilates the renal afferent arteriole?
Both.
Other than Ibuprofen and Aspirin, name 6 non-selective NSAIDs
(1) Diclofenac
(2) Ketorolac
(3) Indomethacin
(4) Meloxicam
(5) Piroxicam
(6) Naproxen
Adverse Effects (7) : Non-selective NSAIDs
(1) GI erosions
(2) Bleeding
(3) ↓ Na+ excretion ⇒ ↑ BP
(4) Interstitial nephritis
(5) Renal papillary necrosis
(6) Aplastic anemia
(7) Hypoaldosteronism
* (Bleeding often presents as GI bleed)*
Specifically, what type of kidney damage can occur due to NSAID induced vasoconstriction?
Renal papillary necrosis
(Medulla is already hypoxic ∴ ↑ Sensitivity ischemia ⇒ PAPILLARY necrosis)
What psychiatric drug’s concentration can be increased by NSAIDs?
Li+
Which NSAID most commonly causes aplastic anemia?
Indomethacin
MOA: Aspirin
IRREVERSIBLY acetylates COX-1 and COX-2
What NSAID is used in Kawasaki’s disease?
Aspirin
(Notable as ASA is usually avoided due to Reyes syndrome)
Name 2 signs/symptoms of Reye’s syndrome
(1) Encephalopathy
(2) Liver dysfunction
Name 3 signs of aspirin toxicity
(1) Metabolic acidosis
(2) Respiratory alkalosis
(3) Tinnitus
* (+ Hyperthermia. Tinnitus presents first)*
Treatment: Aspirin toxicity
(1) Charcoal
(2) NaHCO3