Results 171 to 180 of about 58,017 (220)

Estrone and Estrone Sulfate Concentrations in Milk and Milk Fractions

Journal of the Academy of Nutrition and Dietetics, 2012
Dairy products naturally contain estrogens, and some consumer groups contend these estrogens cause adverse health effects. The objectives of this research were to characterize estrone (E(1)) and estrone sulfate (E(1)S) concentrations in milk from a large number of individual cows, in skim and fat fractions of milk, and in retail milk to provide food ...
Ann L, Macrina, Troy L, Ott, Robert F, Roberts, Ronald S, Kensinger   +3 more
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Estrogenicity, antiestrogenicity and estrone sulfatase inhibition of estrone-3-amine and estrone-3-thiol

The Journal of Steroid Biochemistry and Molecular Biology, 1995
Estrogen levels in breast tumors of post-menopausal women are at least 10 times higher than estrogen levels in plasma. The high level of estrogen in these tumors is postulated to be due to in situ formation of estrogen, possibly through conversion of estrone sulfate to estrone by the enzyme estrone sulfatase.
K W, Selcer, P K, Li
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The metabolism of estrone and estrone-3-glucosiduronate in the guinea-pig

Journal of Steroid Biochemistry, 1980
Abstract Analysis of urinary metabolites of [6,7- 3 H]-estrone and of [6,7- 3 H]-estrone-3-glucosiduronate was performed in intact guinea-pigs. The preliminary separation of urinary metabolites was carried out by submitting these metabolites to countercurrent distribution. The further separation of each fraction thus obtained was achieved by means of
T, Miyazaki, H, Mizukoshi, Y, Araki, N, Shimizu   +3 more
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A Concise Route to (+)-Estrone

Organic Letters, 2000
A concise route to the Torgov diene, the key intermediate of estrone, has been devised using a chiral dioxycyclopentenone as the starting material by employing a sequence of five steps of reactions involving a Lewis acid-mediated Diels-Alder reaction with Dane's diene.
, Tanaka, , Nakashima, , Taniguchi, , Ogasawara   +3 more
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RADIOIMMUNOASSAY OF ESTRONE AND ESTRADIOL

Acta Endocrinologica, 1970
ABSTRACT Antibodies to estradiol were produced by immunization of sheep with 17β-estradiol-succinyl-BSA. The antiserum cross reacted readily with estrone and was used for radioimmunoassay of plasma estrone and estradiol. The method includes ether extraction, separation of estrone and estradiol by Sephadex LH-20 column chromatography and radio ...
G, Mikhail, C H, Wu, M, Ferin, R L, Vande Wiele   +3 more
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Radiolysis of Estrone and Estradiol

Science, 1965
Gamma irradiation of estrone and estradiol in 1 N aqueous sodium hydroxide results in the formation of 2-hydroxyestrone and 2-hydroxyestradiol, respectively. Estrolactone (16a-oxa-D-homoestrone) was not encountered.
O H, Wheeler, R, Montalvo
openaire   +2 more sources

Uptake of estrone and estrone-3-sulfate by lung of macaca fuscata

Journal of Endocrinological Investigation, 1984
An equimolar mixture of 3H-E1-S2 and 14C-E1 was injected in one shot into the inferior vena cava near the heart of female Japanese monkey. Following the injection, blood was collected from the aortic arch at intervals of 15 s over a period of 10 min. The concentration of radioactivities in the whole blood and serum was measured.
C, Sakai, T, Yamamoto, J, Kitawaki, S, Yoshiji, J, Yasuda, J, Yamaki, M, Fujii, K, Tsukamoto, H, Honjo, H, Okada   +9 more
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Role of estrone on the regulation of osteoblastogenesis

Molecular and Cellular Endocrinology, 2019
Although estradiol bone contribution has been deeply studied, little is known about the action of estrone. We investigated the direct action of estrone on osteoblasts growth and differentiation, with focus on the biochemical mechanism displayed by the estrogen.
Crescitelli, Maria Carla, Rauschemberger, María Belén, Cepeda, Sabrina Belén, Sandoval, Marisa, Massheimer, Virginia Laura   +4 more
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Estrone sulfate, estrone and estradiol concentrations in normal and cirrhotic postmenopausal women

Steroids, 1983
Circulating levels (mean +/- SD) of estrone sulfate (E1S), estrone (E1) and estradiol-17 beta (E2) were measured in normal and cirrhotic postmenopausal women matched for body weight and age. In cirrhotic postmenopausal women, the E1S concentrations (201 +/- 46 pg/ml), while both E1 and E2 levels showed an increase (46 +/- 7 and 30 +/- 8 pg/ml) compared
V M, Jasonni, C, Bulletti, G F, Bolelli, F, Franceschetti, M, Bonavia, P, Ciotti, C, Flamigni   +6 more
openaire   +2 more sources

16-Hydroxylation of Estrone-3-Sulfate and Estrone in the Guinea Pig in Vivo*

Endocrinology, 1978
[6,7-3H]Estrone-3-sulfate or [6,7-3H]-estrone of high specific activity was injected into adult female English Shorthair guinea pigs. Blood, liver, kidney, gall bladder bile, and urine were obtained and investigated for metabolites. Chromatographic procedures followed by enzymatic or solvolytic cleavage of conjugates and subsequent crystallization with
R, Hobkirk, M, Nilsen, J, Mori
openaire   +2 more sources