Unit 4- Steroid and NSAID Flashcards
Adrenal Gland Secretion
Adrenalin, corticosteroids
Pituitary Gland Secretion
Growth hormone, corticotropin (ACTH), thyrotropin (TSH), gonadotropins (LH and FSH), prolactin, vasopressin (ADH), oxytocin
Testicle Secretion
Testosterone, estrogen, progesterone
Ovary Secretion
Testosterone, estrogen, progesterone
Pancreas Secretion
Insulin, glucagon
Thyroid Secretion
Thyroxine, triiodothyronine, parathyroid
Hypothalamus Secretion
Gonadotropin releasing hormone
Steroid Hormones
Cholesterol backbone, easily crosses cell membrane; progesterone, testosterone, estrogen, cortisol
Amine Hormones
Thyroxine, catecholamines, melatonin
Peptide Hormones
Insulin, oxytocin, vasopressin, growth hormone
Endogenous Corticosteroids
Cortisol regulates metabolism and immune, Aldosterone regulates sodium and water retention
Cortisol Synthetic Analog
Hydrocortisone
Corticosteroids
Effect metabolism, electrolytes, CNS, cardiovascular, skeletal muscle, blood cells, lymphoid tissue, and immunologic system, anti inflammatory and immunosuppressive
Corticosteroid Adverse Effects
Appetite, weight gain, mood changes, muscle weakness, blurred vision, body hair growth, bruising, susceptibility to infection
Prolonged Steroid Adverse Effects
Adrenal atrophy, osteoporosis, immunosuppression, euphoria
Inflammation
Immunovascular immune response to tissue injury, eliminate injury and initiate repair, mediated by chemical mediators
Small Animal Inflammatory Diseases
IBD, gastric ulcer, septic inflammatory, skin disease, neoplasia, inflammatory joint, inflammatory oral, primary inflammatory brain disorder
Signs of Inflammation
Pain, heat, redness, swelling, loss of function
Acute Inflammation
Initial response, plasma and leukocytes mobilized to tissue
Chronic Inflammation
Prolonged, mononuclear cells at site, destruction and healing of tissue
Inflammatory Response Complex
Activation of leukocytes and release of chemical mediators, arachidonic acid metabolism, vascular permeability altered, neutrophils release free radicals, pro-inflammatory cytokines
Products of Arachidonic Acid Metabolism
Leukotrienes, thromboxanes, prostaglandins
NSAID MOA
Inhibit cyclooxygenase
COX Enzymes
Cyclooxygenase, converts prostaglandins to thromboxane A2
COX-1 Enzyme
Constitutive, has a constant level of activity, maintains gastric mucosa, vascular homeostasis, platelet aggregation, maintains blood flow, produces PGs and TXA2
COX-2 Enzyme
Inducible, expressed at sites of injury, up regulates pain receptors, mediated by inflammation, causes fever, upregulated by cancer, produces PGs, and bradykinin
COX-3 Enzyme
Regulates fever, located in the brain, discovered in dogs
5-LOX Enzyme
Produces pro-inflammatory leukotrienes
Prostaglandins
Produced in many tissues, control inflammation, blood flow, and blood clots, promote inflammation, pain, and fever
Thromboxane A2
Platelet aggregation, smooth muscle contraction, endothelial inflammatory response activation
LOX Inhibition
GI safety, greater analgesic efficacy
NSAID Functions
Analgesia, antipyresis, anti-inflammation
NSAID Uses
Osteoarthritis, rheumatoid arthritis, pancreatitis, dental pain, skin inflammation
NSAID Adverse Effects
GI complications, deteriorate osteoarthritis