Cited by 317Estrogen and related hormone effectsMenopause: Health Impacts and TreatmentsPhytoestrogen effects and research

Comparison of pharmacodynamic properties of various estrogen formulations

Mashchak, C.Ann, Lobo, Rogerio A., Dozono-Takano, Ryoko, Eggena, Peter, Nakamura, Robert M., Brenner, Paul F., Mishell, Daniel R.·1982·American Journal of Obstetrics and Gynecology

Abstract

A group of 23 healthy postmenopausal women received one or more 2-week courses of daily administration of the following estrogen preparations: piperazine estrone sulfate (Ogen), 0.3, 0.625, 1.25, 2.5, and 5.0 mg; micronized estradiol (Estrace), 1, 2, and 10 mg; conjugated estrogens (Premarin), 0.3, 0.625, 1.25, and 2.5 mg; ethinyl estradiol (Estinyl), 10 and 20 micrograms; and diethylstilbestrol, 0.1 and 0.5 mg. Each dosage of each formulation was ingested by three women. In those women who received more than one dosage, each course was separated by a drug-free interval of at least 4 weeks. Pretreatment and posttreatment levels of follicle-stimulating hormone (FSH), luteinizing hormone (LH), corticosteroid-binding globulin-binding capacity, sex hormone-binding globulin-binding capacity, angiotensinogen, estrone, and estradiol were determined. The relative potency of these five estrogen formulations was determined by parallel line analysis for each of these responses, except LH. On a weight basis, piperazine estrone sulfate and micronized estradiol were equipotent for all responses. Conjugated estrogens suppressed FSH in a fashion equipotent to that of the other nonsynthetic estrogens; however, for all three hepatic parameters, the response was exaggerated twofold to threefold. The synthetic estrogens, diethylstilbestrol and ethinyl estradiol, were relatively more potent on a weight basis for every response and produced the most marked response (fourfold to eighteenfold in excess of their FSH suppression) for the hepatic parameters.

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Crossref · 10.1016/0002-9378(82)90218-6

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Authors
Mashchak, C. A., Lobo, R. A., Dozono-Takano, R., Eggena, P., Nakamura, R. M., Brenner, P. F., & Mishell, D. R.
Affiliations
University of Southern California (US)
Corresponding author
Mishell, Daniel R.
Venue
American Journal of Obstetrics and Gynecology
Publisher
Elsevier BV
Published
1982-11
Volume
144
Issue
5
Pages
511-518
ISSN
0002-9378 (ISSN-L)
OpenAlex
W1593764750
Cited by
316
References
10
Citations by year
2026: 2 · 2025: 8 · 2024: 5 · 2023: 5 · 2022: 11 · 2021: 8 · 2020: 7 · 2019: 1 · 2018: 5 · 2017: 10 · 2016: 4 · 2015: 13 · 2014: 3 · 2013: 10 · 2012: 15
FWCI
2.00
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Obstetrics and Gynecology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Menopause: Health Impacts and Treatments
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Phytoestrogen effects and research
Keywords
pharmacodynamics, postmenopausal women, micronized estradiol, conjugated estrogens, ethinyl estradiol, diethylstilbestrol, luteinizing hormone, sex hormone-binding globulin, corticosteroid-binding globulin, angiotensinogen, estrone, estradiol, relative potency, synthetic estrogens
MeSH terms
Angiotensinogen, Diethylstilbestrol, Estradiol, Estrogens, Conjugated (USP), Estrogens, Estrone, Ethinyl Estradiol, Female, Follicle Stimulating Hormone, Humans, Luteinizing Hormone, Menopause, Sex Hormone-Binding Globulin, Transcortin

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