Gonadal Hormones Flashcards
Diethylstibestrol -DES
Synthetic non steroidal estrogens
To prolong pregnancy in woman
But teratogenic affect
Estradiol
Estrone
Estriol
Natural estrogens
Ethyinyl estradiol
Mestronol
Quinestrol
Synthetic steroidal estrogens
- Used for post menopausal hormone therapy
- Contraceptives
- primary hypogonadism
Medroxy progesterone acetate
Synthetic progesterone derivatives
Add to conjugated estrogen/ ethinyl estradiol in menopausal women** so don’t increased risk of endometrial cancer
Megestrol
Synthetic progesterone
Hydroxy progesterone caproate
Synthetic progesterone
19 norestestosterone derivatives
Progestin drug used as contraceptives, post menopausal rep.ther.
Norethindrone
Levonorgestrel
Desogestrel
Norgestimate
Progesterone
Helps the fertilized ovum survive
Prevents endometrial carcinoma
Depot medroxy progesterone acetate
Progestin for contraception every three months
Injectable
Levonorgestrel
Progestin implants for contraception s
Oral-within 24 hours for post coital
Norethindrone
Oral progestin contraceptives
Mifepristone
Postcoital contraception along with misoprestol pge1
Plan b
Block progesterone receptors -prevents implantation within 72 hours
-terminate pregnancy <49 days
Hcg levels fall, progesterone falls,
Clomiphene- SERM
Competitive antagonist at estrogen receptors in pituitary and hypothalamus
- inhibit estradiol
- increases secretion if FSH/LH
- induces ovulation
Use-infertility,invitro
A.e.many babies
Tamoxifen citrate-SERM
Antagonist of estrogen receptors -breast
Use:diagnosis if **breast cancer, prevents osteoporosis
A.e.increase risk of endometrial cancers, hot flashes,n&v
Ralpxofene- SERM
Partial agonist estrogen in bone, antagonist in endometrium and breast
*lower risk of breast cancer, no endom. Hyperplasia,
Use: post menopausal osteoporosis
No endometrial hyperplasia**
A. Hot flashes, n and v