Adrenal Steroids Flashcards
Topical corticosteroids
Cortisol, methylprednisolone, dexamethasone
Inhaled corticosteroids
Fluticasone, beclomethasone, flunisolide, triamcinolone
Depot corticosteroids
Methylprednisolone suspended in polyethylene glycol
Mifepristone
Glucocorticoid antagonist - progesterone receptor antagonist
Used in induce abortion in early pregnancy.
At high levels blocks glucocorticoid receptors- Tx of life threatening elevated glucocorticoids in ectopic ACTH syndrome
Mitotane
Synthesis inhibitors - mitochondria - all pathways
Aminoglutethimide.
Synthesis inhibitors - inhibits side chain cleavage enzyme cyp11a1
All pathways
Ketoconazale
Synthesis inhibitors - inhibits 17,20 lyase
Low levels decreases androgen synthase
Highly levels decreases all adrenal and gonadal steroid synthesis
Metyrapone
Synthesis inhibitors
11- B- hydroxylase
Decreases cortisol and aldosterone
Trilostane
Synthesis inhibitor - 3 B hydroxysteroid dehydrogenase
All but primarily cortisol and aldosterone
Fludrocortisone
Mineralocorticoid agonist
High mineral corticoid/ glucocorticoid activity ratio
Side effects same as having excessive aldosterone production ( extra cellular volume expansion, hypokalemia, HTN, k wasting, - renin release)
Spironolactone
Mineralcorticoid antagonist
K sparing diuretic
- androgen and progesterone receptor antagonist
Causes gynecomastia in males
Eplerenone
Mineral. Antagonist
K sparing diuretics
Pure Mineralcorticoid receptor antagonist