Sex Hormones Flashcards
Leuprolide & Goserelin
long-acting GnRH agonists
long-acting GnRH agonists (2)
Leuprolide
Goserelin
uses for GnRH long-acting agonists (4)
IVF
sex steroid-dependent CAs
endometriosis
precocious puberty
Cetrorelix & Ganirelix
GnRH antagonists
GnRH antagonist uses
IVF
sex steroid dependent CAs
endometriosis
precocious puberty
difference between GnRH long-acting agonists and antagonists (2)
antagonists are faster acting (4-5 days vs. 3 weeks)
agonists have an initial surge w/ tx
human menopausal gonadotropins (hMG)
FSH & LH
Urofollitropin (uFSH, Bravelle)
purified FSH
tamoxifen drug type
anti-estrogen, SERM
clomiphene drug type & MOA
SERM
antagonizes negative feedback in hypothalamus
Clomiphene use & characteristic
1st line fertility drug
oral
fulvestrant drug type
full estrogen receptor antagonist
Anastrozole (Arimidex), Letrozole (Femara), Exemastane (Aromasin)
drug type & effects
aromatase inhibitors- stop conversion to estrogen
only affect estrogen, not adrenal steroid synthesis
DOC breast CA in post-menopausal women?
Aromatase inhibitors (Anastrozole, Letrozole, Exemastane)
DOC breast CA in pre-menopausal women
tamoxifen
tamoxifen effects (4)
breast CA treatment
limits bone less
may increase risk of uterine CA
may decrease HDL
progestin uses (3)
contraception
prevention of endometrial hyperplasia in HRT
conditions where estrogen is contraindicated
19-nortestosterone
drug type & activity
progestin
progestin & androgenic activity
Mifepristone, Danazol
drug type
Anti-progestin
mifepristone MOA & use
progesterone/glucocorticoid antagonist
terminate pregnancy, prevent implantation
danazol MOA & use
weak progestin & androgen
decreases ovarian function
tx endometriosis
how do combination OCPs inhibit ovulation
block LH surge
bleeding at the end of the cycle in an OCP user is due to?
progestin withdrawal
ethinyl estradiol & drospirenone
Yaz
contraindications for combination contraceptives (4)
thrombophlebitis
cerebrovascular disorders
estrogen-dependent neoplasms
pregnancy
indication for estrogen-only HRT
hx hysterectomy
raloxifine uses (3)
prevents osteoporosis
prevents breast cancer
no effect on hot flashes
HRT side effects (4)
endometrial cancer
small risk of breast CA
gallbladder disease (common)
CV disease
when does HRT have more benefits than risks?
< 10 years post-menopause
androgens (2) and their uses (4)
testosterone & methyltestosterone testicular deficiency female hypopituitarism hypoproteinemia of nephrosis negative nitrogen balance
Flutamide drug type & use
Androgen receptor antagonist
prostate cancer along w/ long-acting GnRH agonist
Finasteride (Propecia) and Dutasteride (Avodart) drug type, uses, and side effects
5a-reductase inhibitor
tx for BPH, male pattern baldness
side effects: impotence, teratogenic
GnRH long-acting agonist MOA
continuous administration suppresses release of LH and FSH (after initial surge)