Endocrine Flashcards
Laron dwarfism
Mutation in GH receptor
Increased levels of GH, low IGF-I and IGFBP-3
Treat with IGF-1
Prader-Willi syndrome
Deletion in paternal copy of chromosome 15
GH replacement decreases body fat
Octreotide
Somatostatin analogue
Lanreotide
Somatostatin analogue
Cabergoline
Dopamine D2 receptor agonist
More selective for D2
Take weekly
Dromocriptine
Dopamine D2 receptor agonist
Used for small protactinomas
Take daily
Leo thyroxine
T4 analogue
Triiodothyronine
T3 analogue
Much lower half life than T4
Propylthiouracil
Thioamide (inhibit thyroid hormone synthesis)
Half life is 1.5 hours
Block iodination of tyrosyl groups
Methimazole
Thioamide (inhibit thyroid hormone synthesis)
Half life is 6 hours
Block iodination of tyrosyl groups
Cosyntropin
ACTH analogue
Used for ACTH stimulation test
Hydrocortisone
Short acting steroid
100% bioavailability
Dexamethasone
Long acting steroid
Prednisone
Long acting steroid
Fludrocortisone
Steroid which is mainly a mineralocorticoid
Used in primary adrenal insufficiency
Watch for hypokalemia
Ketoconazole
Nonselective inhibitor of adrenal and gonadal steroids
Used in Cushings disease
Blocks cyp 17-20 and 3B hydroxysteroid
Mitotane
Nonselective cytotoxic adrenal cortex agent
Used in adrenal carcinoma
Mifepristone
Glucocorticoid receptor antagonist
Treats diabetes related to Cushings disease
Watch for hypokalemia and QT prolongation
Gonadorelin
Synthetic GnHR
Half life 4 min
Leuprolide
GnRH analog
More potent and longer acting
Half life 3 hrs intranasal
Goserelin
GnRH analog
More potent and longer acting
Half life 3 hrs intranasal
Nafarelin
GnRH analog
More potent and longer acting
Half life 3 hrs intranasal
Ganirelix
GnRH antagonist
Urofillotropin
FSH from urine of postmenopausal women
Fillotrpon alpha
Recombinant FSH
Lutropin alpha
Recombinant LH
Human chorionic gonadotropin
Chorionic gonadotropin
Produced by the placenta
More LH activity than FSH
Choriogonadotrpin
Chorionic gonadotropin
Recombinant
More LH activity than FSH
Human menopausal gonadotropin
Menotropin
FSH and LH activity
Estradiol
Natural estrogen
major product of the ovary
E2
Estrone
Natural estrogen
E1
Estriol
Natural estrogen
E3
Estropipate
Natural estrogen
Purified crystalline estrone
Estrogen esters
Natural estrogen
Metabolically resistant pro hormones
Conjugated estrogens
Natural estrogen
Equine estrogen sulfate sodium salts
High potency
ethinyl estradiol
Synthetic estrogen
Extensive hepatic metabolism
More active than natural estrogens
Diethylstibestrol (DES)
Synthetic estrogen
Non-steroidal
Carcinoma in female offspring
Esterfied estrogens
Synthetic estrogen
From soybeans and yams
Metabolic conversion from estrone to estradiol
Bisphenol A
Leaches from plastics
Genistein
Isofavone phytoestrogen
Medroxyprogesterone acetate
Progestin agent
Androgenic and antiestrogenic
Norethindrone
Progestin agent, 1st generation
Androgenic, antiestrogenic, and anabolic
Levonorgestrel
Progestin agent, 2nd generation
Androgenic, antiestrogenic, and anabolic
Desogestrol
Progestin agent, 3rd gen
No other effects
Drospirenone
Progestin agent, 4th generation
Estrogenic, slight antiandrogenic, antimineralocorticoid
Tamoxifen
Selective estrogen receptor modulator
Partial agonist-antagonist
Used in breast cancer
Toremifene
Selective estrogen receptor modulator
Partial agonist-antagonist
Used in breast cancer
Raloxifene
Selective estrogen receptor modulator
Partial agonist-antagonist
Used in osteoporosis