Reproductive Flashcards
what is leuprolide
GnRH analog
leuprolide mechanism
pulsatile –> GnRH agonist
continuous –> GnRH antagonist (downregulates receptor) –> decrease FSH and LH
clinical use of pulsatile leuprolide
infertility
clinical use of continuous leuprolide (3)
- prostate cancer (with flutamide)
- uterine fibroids
- precocious puberty
three types of estrogen drugs
- ethinyl estradiol
- DES
- mestranol
clinical use of estrogens (3)
- hypogonadism or ovarian failure
- HRT
- androgen-dependent prostate cancer
side effects of estrogens
- increase risk endometrial cancer
2. increase risk thrombi
complications in female baby from DES exposure in utero
clear cell adenocarcinoma of vagina
contraindications for estrogen administration
ER+ breast cancer
history of DVTs
clomiphene drug class
selective estrogen receptor modulators (SERMs)
tamoxifen drug class
selective estrogen receptor modulators (SERMs)
raloxifene drug class
selective estrogen receptor modulators (SERMs)
clomiphene mechanism
antagonist at estrogen receptors in hypothalamus
prevents feedback inhibition –> increase LH and FSH release –> stimulates ovulation
clinical use clomiphene
infertility due to anovulation (i.e. PCOS)
side effects clomiphene (4)
- hot flashes
- ovarian enlargement
- multiple pregnancies
- visual disturbances
tamoxifen mechanism
estrogen receptor antagonist in breast, agonist in bone and uterus
clinical use tamoxifen
ER+ breast cancer
side effects tamoxifen (2)
- endometrial cancer
2. thromboembolic events
raloxifene mechanism
estrogen receptor agonist in bone, antagonist in uterus
clinical use raloxifene
osteoporosis (decreases resorption of bone)
side effects raloxifene (1)
- thromboembolic events
clinical use hormone replacement therapy (HRT) (2)
- relief of menopausal symptoms
2. osteoporosis (increase estrogen –> decrease osteoclast activity)
side effects HRT (2)
- endometrial cancer (unopposed estrogen, so add progesterone)
- cardiovascular risk
what is anastrozole
aromatase inhibitor
what is exemestane
aromatase inhibitor
clinical use anastrozole
used in postmenopausal women with breast cancer
clinical use exemestane
used in postmenopausal women with breast cancer
progestin mechanism
bind progesterone receptors –> decrease growth and increase vascularization of endometrium