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Pharm - Repro
Reproductive Pharmacology from First Aid 2013
Question | Answer |
---|---|
Leuprolide: MOA, Use, Tox | MOA: GnRH analogue Use: Agonist when pulsatile (fertility) Antagonist when continuous(fibroids, precocious puberty, prostate cancer) Tox: anti-androgenic, N/V |
Testosterone/methyltestosterone: MOA, Use, Tox | MOA: agonist at androgen receptors Use: hypogonadism, 2' sex characteristics, stimulation of anabolism after burn Tox: masculinization, gonadal atrophy, closure of epiphyseal plates (with estrogen), inc LDL, dec HDL |
Finasteride: MOA, Use, Tox | MOA: 5a-reductase inhibitor (test -> DHT) Use: BPH, baldness Tox: feminization |
Flutamide: MOA, Use | MOA: inhibitor of androgen receptor Use: prostate carcinoma |
Ketoconazole: MOA, Use, Tox | MOA: inhibit steroid synthesis (desmolase) Use: PCOS Tox: Amenorrhea |
Spironolactone: MOA, Use | MOA: inhibits steroid binding Use: Treat hirsutism in PCOS Gynecomastia may be desirable SFX. |
Estrogens: naming, MOA, Use, Tox | Nom: estradiol, DES, mestranol MOA: bind estrogen receptors Use: hypogonadism, ovarian failure, post-menopausal HRT, androgen-dep prostate cancer Tox: risk endometrial cancer, DES in utero -> clear cell adenocarc., thrombi/DVT, ER+ breast cancer |
Name three SERMs. | Clomiphene Tamoxifen Raloxifene |
Clomiphene: MOA, Use, Tox | MOA: partial agonist estrogen rec in hypothal prevents feedback inhib on pituitary -> stimulates FSH/LH, ovulation Use: infertility, PCOS Tox: hot flashes, ovarian enlargement, vision disturbances, multiple pregnancies |
Tamoxifen: MOA, Use, Tox | Antagonist at breast: ER+ breast cancer Agonist at uterus: risk of endometrial cancer |
What is the MOA and use of raloxifene? | Agonist at bone: osteoporosis |
What are the indications and risks of HRT? | Relief of menopausal symptoms (hot flashes, vaginal atrophy) and osteoporosis (inhibit OAF/IL-1). Risk of endometrial cancer (add progesterone) and CV risk. |
What is the mechanism and use of anastrozole/exemestane? | They are aromatase inhibitors used in postmenopausal women with breast cancer. |
Progestins: MOA, Use | MOA: bind progesterone receptors, reducing the growth and vascularity of the endometrium Use: active ingredient in OCPs, treating/preventing endometrial cancer |
Mifepristone (RU-486): MOA, Use, Tox | MOA: competitive inhibitor of progesterone Use: termination of pregnancy Use with misoprostol (PGE1) Tox: heavy bleeding, GI upset, abdominal pain |
How do OCPs work? What are their contraindications? | Inhibit FSH/LH, preventing the estrogen / luteal surges, and thus, ovulation. Progestins thicken the cervical mucus. Progestins inhibit endometrial proliferation. C/I: smokers >35y, risk of thromboembolism, or estrogen-dep tumors |
Terbutaline: MOA, Use | MOA: b2 agonist that relaxes the uterus Use: reduce premature uterine contractions |
Tamsulosin: MOA, Use | MOA: a1 antagonist used to treat BPH, selective for a1(A/D) receptors on the prostate over a1B receptors in vasculature |
Sildenafil, vardenafil: MOA, Use, Tox | MOA: PDE inhibitor, increasing cAMP -> smooth muscle relaxation in corpus cavernosum Use: erectile dysfunction Tox: Hot and sweaty, headache, heartburn, Hypotension |
Danazol: MOA, Use, Tox | MOA: synthetic partial androgen agonist Use: endometriosis, hereditary angioedema Tox: weight gain, edema, acne, hirsutism, dec HDL, masculinization, hepatotox |