Nhận Dạng Quốc Tế & Đặc Tính Hóa Học
Monoisotopic mass
270.161979948
InChI
InChI=1S/C18H22O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h3,5,10,14-16,19H,2,4,6-9H2,1H3/t14-,15-,16+,18+/m1/s1
InChI Key
InChIKey=DNXHEGUUPJUMQT-CBZIJGRNSA-N
IUPAC Name
(1S,10R,11S,15S)-5-hydroxy-15-methyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadeca-2(7),3,5-trien-14-one
Traditional IUPAC Name
estrone
SMILES
[H][C@@]12CCC(=O)[C@@]1(C)CC[C@]1([H])C3=C(CC[C@@]21[H])C=C(O)C=C3
Độ hòa tan
30 mg/L (at 25 °C)
pKa (strongest acidic)
10.33
pKa (Strongest Basic)
-5.4
Refractivity
79.08 m3·mol-1
Dược Lực Học :
Estrone, a synthetically prepared or naturally occurring steroidal estrogen obtained from pregnant equine urine, is the primary circulating estrogen after menopause. Estrone is naturally derived from the peripheral conversion of androstenedione by an aromatase enzyme found in adipose tissues and is converted to estradiol in peripheral tissues. The estrogenic potency of estrone is one third that of estradiol. Estropipate is piperazine-stabilized estrone sulfate. Estrone, and estropipate are used to treat abnormalities related to gonadotropin hormone dysfunction, vasomotor symptoms, atrophic vaginitis, and vulvar atrophy associated with menopause, and for the prevention of osteoporosis due to estrogen deficiency.
Cơ Chế Tác Dụng :
Estrone, one of the major mammalian estrogens, is an aromatized C18 steroid with a 3-hydroxyl group and a 17-ketone. It is produced in vivo from androstenedione or from testosterone via estradiol. It is produced primarily in the ovaries, placenta, and in peripheral tissues (especially adipose tissue) through conversion of adrostenedione. Estrone may be further metabolized to 16-alpha-hydroxyestrone, which may be reduced to estriol by estradiol dehydrogenase.
Estrogens enter the cells of responsive tissues (e.g. female organs, breasts, hypothalamus, pituitary) where they interact with estrogen receptors. Hormone-bound estrogen receptors dimerize, translocate to the nucleus of cells and bind to estrogen response elements (ERE) of genes. Binding to ERE alters the transcription rate of affected genes. Estrogens increase the hepatic synthesis of sex hormone binding globulin (SHBG), thyroid-binding globulin (TBG), and other serum proteins and suppress follicle-stimulating hormone (FSH) release from the anterior pituitary.
Dược Động Học :
▧ Absorption :
43%
▧ Protein binding :
> 95%
▧ Metabolism :
Hepatic.
▧ Half Life :
19 hours
Độc Tính :
Symptoms of overdose include nausea and vomiting. Estrogen related side effects include nausea, breast tenderness, fluid retention and edema, headaches and/or migraines, chloasma and poor contact lens fit. Estrogen hormone deficiency is associated with breakthrough bleeding, hypomenorrhea, irritability, depression and menopausal symptoms. Withdrawal bleeds may occur in females.
Chỉ Định :
For management of perimenopausal and postmenopausal symptoms.
Tương Tác Thuốc :
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Fosphenytoin
The enzyme inducer, fosphenytoin, decreases the effect of the hormone agent, estrone.
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Griseofulvin
The enzyme inducer, griseofulvin, decreases the effect of the hormone agent, estrone.
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Phenobarbital
The enzyme inducer, phenobarbital, decreases the effect of the hormone agent, estrone.
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Phenytoin
The enzyme inducer, phenytoin, decreases the effect of the hormone agent, estrone.
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Prednisolone
The estrogenic agent, estrone, may increase the effect of the corticosteroid, prednisolone.
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Prednisone
The estrogenic agent, estrone, may increase the effect of corticosteroid, prednisone.
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Primidone
The enzyme inducer, primidone, decreases the effect of the hormone agent, estrone.
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Tipranavir
Estropipate may increase the adverse dermatological effects (i.e. skin rash) of Tipranavir. Tipranavir may decrease the serum concentration Estropipate. Monitor for estrogen deficiency during concomitant therapy.
Liều Lượng & Cách Dùng :
Cream - Intravaginal - 1 mg/g
Liquid - Oral
Solution / drops - Oral