The three major naturally occurring forms of oestrogens which are found in human urine are 17[beta]-estradiol (E2) and its principal metabolites,
estrone (E1) and estriol (E3).
Later calli were transferred to MS medium containing 17[beta]-estradiol,
estrone, progesterone and androsterone with four different doses (0, 10-4 m mol L-1 and 10-8 m mol L-1 and 10-12 m mol L-1) for 50 days and subcultured in 30 days.
[E.sub.1]
estrone; [E.sub.2]: estradiol; [E.sub.3]: estriol; 2-[OHE.sub.1]: 2-hydroxyestrone; 2-[OHE.sub.2]: 2-hydroxyestradiol; 16a-[OHE.sub.1] 16a-hydroxyestrone; chlormycetin.
The wavelength used to detect the estrogens:
estrone (E1), 17[beta] estradiol (E2), 17[alpha] ethinylestradiol (EE2) was 280 nm, while the progesterone (Pg) was detected at 241 nm.
In this study, compound 3 was synthesized by the reaction of 4-nitrobenzoyl azide with
estrone in presence of dimethyl sulfoxide at mild conditions.
It has been shown that most estrogen in postmenopausal women is produced in peripheral adipose tissue by aromatization of androstenedione to
estrone [7, 35], especially in obese and overweight women.
Comparing biological effects and potencies of
estrone and 17 (3-estradiol in mature fathead minnows, Pimephales promelas.
Summary: A simple salting-out assisted liquid-liquid extraction (SALLE) method with acetonitrile combined with high-performance liquid-chromatography was developed and applied for the determination four kinds of estrogens (estradiol (bE2), diethylstilbestrol (DES),
estrone (E1) and progesterone (PES)) in milk.
The term "estrogen" includes a group of chemically similar hormones:
estrone, estradiol (the most abundant in women of reproductive age) and estriol.
Keywords: Oestrogen,
Estrone (E1),
Estrone sulfate (E1S), Estradiol (E2), Oestrogen receptor (ER), Aromatase (AROM), Aromatase inhibitors (AIs), Steroid sulfatase (STS), 667 COUMATE (STX64), Dual-aromatase-sulfatase inhibitors (DASI).
Levels of E1S in blood are 5-10-fold higher than that of unconjugated estrogens,
estrone (E1), estradiol (E2), and estriol (E3).