Endocrine/Reproductive Drugs - CLASSES/MECHANISMS Flashcards
Histrelin
GnRH analog
Pulsatile → agonist
Continuous → antagonist
Flutamide
Nonsteroidal competitive androgen receptor inhibitor
Will also decreases testosterone inhibition of GnRH secretion → increase serum LH (counteract by always administering with leuprolide)
Somatrem
GH analog
Tolvaptan
ADH antagonist at V2 receptor (kidney)
Spironolactone
Inhibits:
Steroid binding
17,20 desmolase
17-alpha hydroylase
Alendronate
Bisphosphonate
Pyrophosphate analog
Binds hydroxyapatite in bone → inhibiting osteoclast activity
Levothyroxine
Thyroid hormone replacement
Pamidronate
Bisphosphonate
Pyrophosphate analog
Binds hydroxyapatite in bone → inhibiting osteoclast activity
Zoledronate
Bisphosphonate
Pyrophosphate analog
Binds hydroxyapatite in bone → inhibiting osteoclast activity
Nafarelin
GnRH analog
Pulsatile → agonist
Continuous → antagonist
Propylthiouracil
Inhibit thyroid peroxidase → inhibiting the oxidation of iodide and organification and coupling of iodine → inhibition of thyroid hormone synthesis
Also inhibits 5’deiodinase → decreasing peripheral conversion tof T4 to T3
Goserelin
GnRH analog
Pulsatile → agonist
Continuous → antagonist
Cinacalcet
Sensitizes calcium-sensing receptor (CaSR) in parathyroid gland to circulating free calcium → decreases PTH
Letrozole
Aromatase inhibitor
Decreases estradiol levels
Mestranol
Estrogen
Terbutaline
Beta-2 agonist → relaxes uterus
Octreotide
Somatostatin analog
Inhibits release of many hormones
Decreases GI motility
Vasoconstriction
Fludrocortisone
Synthetic aldosterone analog with little glucocorticoid effects
Conivaptan
ADH antagonist at V2 receptor (kidney)
Danazol
Synthetic androgen receptor agonist → decreasing LH and FSH secretion → decreasing growth of endometrial and breast tissue
Also:
Increases levels of C2 esterase inhibitor (deficiency enzyme in hereditary angioedema) → increasing C4 levels
Cabergoline
Ergot alkaloids - D2 agonist
Stimulate D2 receptors on lactotropes → increasing DA → inhibiting prolactin release
Triiodothyronine
Thyroid hormone replacement
Leuprolide
GnRH analog
Pulsatile → agonist
Continuous → antagonist
Ethinyl estradiol
Estrogen
Somatropin
GH analog
Exemestane
Aromatase inhibitor
Decreases estradiol levels
Pegvisomant
GH antagonist:
PEGylated analog of GH → blocks action of GH on target tissue → decreasing IGF-1
Methimazole
Inhibit thyroid peroxidase → inhibiting the oxidation of iodide and organification and coupling of iodine → inhibition of thyroid hormone synthesis
Ketoconazole
Inhibits several steps in steroid synthesis
Anastrozole
Aromatase inhibitor
Decreases estradiol levels
Minoxidil
Direct arteriolar vasodilator
Used for androgenic alopecia (pattern baldness)
Severe refractory hypertension
Ritodrine
Beta-2 agonist → relaxes uterus
Demeclocycline
ADH antagonist at V2 receptor (kidney)
Finasteride
5-alpha reductase inhibitor
Decreases conversion ot testosterone to DHT
Oxytocin
Stimulates uterine contraction
Stimulates contraction of myeoepithelial cells in breast
Diethylstilbestrol (DES)
Estrogen
Ibandronate
Bisphosphonate
Pyrophosphate analog
Binds hydroxyapatite in bone → inhibiting osteoclast activity
Tamsulozin
Alpha-1 antagonist
SELECTIVE FOR ALPHA-1A RECEPTORS (found on prostate) vs vascular alpha-1b receptors
Risedronate
Bisphosphonate
Pyrophosphate analog
Binds hydroxyapatite in bone → inhibiting osteoclast activity
Bromocriptine
Ergot alkaloids - D2 agonist
Stimulate D2 receptors on lactotropes → increasing DA → inhibiting prolactin release
Etidronate
Bisphosphonate
Pyrophosphate analog
Binds hydroxyapatite in bone → inhibiting osteoclast activity
Desmopressin acetate
ADH analog