Adrenal disorders Flashcards
Function of glucocorticoids
regulation of intermediary metabolism and immunity
Function and example of mineralcorticoids
Aldosterone
Sodium retention
Potassium loss
Example of androgens
DHEA
What binds Cortisol in plasma and what %
CBG 90%
Effects of glucocorticoids
gluconeogenesis and glycogen synthesis in the fasting state.
Increase serum glucose levels/stimulate insulin release.
decreased muscle mass/weakness and thinning of skin.
↑ insulin secretion leading to ↑ in fat deposition.
Catabolic and anti-anabolic effects (Cushing’s)
Adverse effects of systemic glucocorticoids short term
Secondary infections.
hyperglycemia
mood and behavioral changes
Adverse effects of systemic glucocorticoids long term
Osteoporosis.
Cataracts
hypertension
Myopathy
Three short to medium acting glucocorticoids
hydrocortisone
Cortisone
prednisone
One long acting glucocorticoid
Dexamethasone
Addison’s disease
Adrenal glands produce too little cortisol
Insufficient levels of aldosterone.
Weakness, fatigue, weight loss, hypotension, hyper pigmentation,
Inability to maintain blood glucose level during fasting.
What is the tx for Adison’s
20-30 mg of hydrocortisone daily
Supplement with salt-retaining hormone: Fludocortisone.
What is Cushing’s syndrome
Chronic High levels of cortisol due to ACTH secreting tumor.
Buffalo hump, moon face, osteoporosis, hypertension.
What are three medications for Cushing’s
Ketoconazole (Nizoral)
Metyrapone (Metopirone)
Mefepristone (Korlym)