Pharmacology Flashcards
(92 cards)
Synthetic aldosterone is called _________
Fludrocortisone
Blocks conversion of cholesterol to pregnenolone
Aminoglutethimide
Potent, nonselective inhibitor of adrenal and gonadal steroid synthesis and anti-fungal
ketoconazole
Nonselective cytotoxic action on adrenal cortex and DDT analog
Mitotane
Relatively selective inhibitor of 11-hydroxylation, interferes with cortisol and corticosterone synthesis
Metyrapone
Tx for cushing’s
Dx for adrenal insufficiency
Progesterone receptor antagonist; GR antagonist at high concentrations
Mifepristone (RU-486)
Binds to somatostatin receptorand blocks release of ACTH from corticotropes
treatment for cushings and acromegaly
Pasireotide
Which type of thyroid converting enzyme is expressed in the kidney and liver? (D1/ D2/ D3)
D1
Which type of thyroid converting enzyme does the majority of conversion? (D1/ D2/ D3)
D2
Which type of thyroid converting enzyme is expressed in the brain and skin? (D1/ D2/ D3)
D3
How does Iodine get into the follicular cells of the thyroid gland?
The Sodium-Iodide symporter
What are 2 ways that the Sodium-Iodide symporter can be affected and cause disease
- gene mutations -> congenital hypothyroidism
2. Autoimmune Dz -> Hashimoto’s thyroiditis
What is the synthetic T4 replacement?
Levothyroxone
What is the synthetic T3 replacement?
Liothyronine
What is the 4:1 mix of T4:T3?
Liotrix
Readjustments to thyroid medication should be made ____ weeks after beginning therapy
4-6 weeks
Which thyroid medication can be give IV in an emergency?
Liothyronine
What are the 3 drugs that inhibit thyroid hormone synthesis?
- Propylthiouracil, PTU
- Methimazole
- Carbimazole
What step in thyroid hormone synthesis do Propylthiouracil, Methimazole and Carbimazole work?
organification of iodine
and coupling of iodotyrosine
Which is the pro-drug? What is it’s active form? (Propylthiouracil/ Methimazole/ Carbimazole)
Carbimazole —-> Metimazole
What are the 3 major side effects of Propylthiouracil, Methimazole and Carbimazole?
- agranulocytosis
- Hepatitis
- Lupus-like reaction
Which is best used in pregnancy? (Propylthiouracil/ Methimazole/ Carbimazole)
Propylthiouracil,
crosses placenta less,
lower conc in breast milk,
but high risk of agranulocytosis
How does 1,25(OH)2D increase serum calcium?
By increasing efficiency of intestinal absorption
Lithium therapy leads to (increased/ decreased) calcium levels
increased