Repro Flashcards
leuprolide
gnRH analog: agonist when pulsed, antag continuous (decreases fsh, lh)
leuprolide uses:
pulsed/analog: infertility
continuous: prostate ca (with flutamide), uterine fibroids, precocious puberty
leuprolide: tox
antiandrogen, n&V
(methyl)testosterone)
agonist @ androgen R, Rx for hypogonadism, promotion of secondary sex characteristics, stimulates anabolism post surgery/burn/injury
(methyl)testosterone): tox
masculization in females, intratesticular testos decrease (inhibits LH release) so atrophy, premature closure of epiphyseal plates. increase LDH, decrease HDL
finasteride
5-a-reductase inhibitor (less conversion of testos to DHT). for BPH, male pattern baldness, encourages female breasts
flutamide
nonsteroid, competitive inhib androgens @ testost R. for prostate CA
ketoconazole
inhibits steroid synthesis (inhibits 17,20 desmolase)
spironolactone
inhibits steroid binding
keto and spiro
PCOS for preventing hirsutism. tox: gynecomastia, amenorrhea
estrogens (binds estrogen R)
DES, mestranol, ethinyl estradiol
estrogens: uses
hypogonadism, ovarian failure, menstrual abnormalities, HRT (postmenopausal), adrogen-dependent prostate ca
estrogens: tox
increased risk of endometrial ca (so add progesterone for HRT) & thrombi, bleeding (postmenopausal chics), cell cell adenoCa vagina (DES in utero)
estrogens: contraindic
ER positive breast Ca, Hx of DVTs
HRT
relieves hot flashes, vag atrophy, OP (increases estrogen, decreases osteoclasts)
HRT
possible increased CV risk
anastrozole/exemestane
aromatase inhibitors used in postmenopausal women with breast Ca
progestins (binds progest Rs)
reduces growth and increases vasc of endometrium
progestins
OCPs, Rx endometrial Ca, abnormal uterine bleeding
mifepristone (RU-486)
competitive inhib of progestins (@ R), abortion when given with misopristol (PGE1 inhib)
mifepristone (RU-486): tox
heavy bleeding, GI (abdo pain, n&v, anorexia)
OCP
inhibits LH/FSH so no estrogen surge so (no LH surge so no ovulation)
OCP: contra
smokers, over 35 (cardio risk), VTE/stroke/estrogen dependent tumor
terbutaline
b2 agonist relaxes uterus, reduces premature uterine contractions