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Cited by 815Ovarian function and disordersHormonal and reproductive studiesDiabetes, Cardiovascular Risks, and Lipoproteins

The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.

A Direct Effect of Hyperinsulinemia on Serum Sex Hormone-Binding Globulin Levels in Obese Women with the Polycystic Ovary Syndrome*

NESTLER, JOHN E., POWERS, LINDA P., MATT, DENNIS W., STEINGOLD, KENNETH A., PLYMATE, STEPHEN R., RITTMASTER, ROGER S., CLORE, JOHN N., BLACKARD, WILLIAM G.·1991·The Journal of Clinical Endocrinology & Metabolism
DOI 10.1210/jcem-72-1-83
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Abstract

To determine whether hyperinsulinemia can directly reduce serum sex hormone-binding globulin (SHBG) levels in obese women with the polycystic ovary syndrome, six obese women with this disorder were studied. Before study, ovarian steroid production was suppressed in each woman by the administration of 7.5 mg of a long-acting GnRH agonist, leuprolide depot, im, on days -56, -28, and 0. This resulted in substantial reductions in serum concentrations of testosterone (from 1.72 +/- 0.29 nmol/L on day -56 to 0.32 +/- 0.09 nmol/L on day 0), non-SHBG-bound testosterone (from 104 +/- 16 pmol/L on day -56 to 19 +/- 5 pmol/L on day 0), androstenedione (from 7.25 +/- 1.65 nmol/L on day -56 to 2.78 +/- 0.94 nmol/L on day 0), estrone (from 371 +/- 71 pmol/L on day -56 to 156 +/- 29 pmol/L on day 0), estradiol (from 235 +/- 26 pmol/L on day -56 to 90 +/- 24 pmol/L on day 0), and progesterone (from 0.28 +/- 0.12 nmol/L on day -56 to 0.08 +/- 0.02 nmol/L on day 0). Serum SHBG levels, however, did not change (18.8 +/- 2.8 nmol/L on day -56 vs. 17.8 +/- 2.6 nmol/L on day 0). While continuing leuprolide treatment, the women were administered oral diazoxide (300 mg/day) for 10 days to suppress serum insulin levels. Diazoxide treatment resulted in suppressed insulin release during a 100-g oral glucose tolerance test (insulin area under the curve, 262 +/- 55 nmol/min.L on day 0 vs. 102 +/- 33 nmol/min.L on day 10; P less than 0.05) and deterioration of glucose tolerance. Serum testosterone, androstenedione, estrone, estradiol, and progesterone levels did not change during combined diazoxide and leuprolide treatment. In contrast, serum SHBG levels rose by 32% from 17.8 +/- 2.6 nmol/L on day 0 to 23.5 +/- 2.0 nmol/L on day 10 (P less than 0.003). Due primarily to the rise in serum SHBG levels, serum non-SHBG-bound testosterone levels fell by 43% from 19 +/- 5 pmol/L on day 0 to 11 +/- 4 pmol/L on day 10 (P = 0.05). These observations suggest that hyperinsulinemia directly reduces serum SHBG levels in obese women with the polycystic ovary syndrome independently of any effect on serum sex steroids.

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Metadata

Authors
NESTLER, J. E., POWERS, L. P., MATT, D. W., STEINGOLD, K. A., PLYMATE, S. R., RITTMASTER, R. S., CLORE, J. N., & BLACKARD, W. G.
Affiliations
Madigan Army Medical Center (US)
ORCID
PLYMATE, STEPHEN R.
Venue
The Journal of Clinical Endocrinology & Metabolism
Publisher
The Endocrine Society
Published
1991-01
Volume
72
Issue
1
Pages
83-89
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
DOI
10.1210/jcem-72-1-83
OpenAlex
W2008509267
Cited by
815
References
38
Citations by year
2026: 13 · 2025: 22 · 2024: 25 · 2023: 25 · 2022: 28 · 2021: 38 · 2020: 27 · 2019: 25 · 2018: 18 · 2017: 25 · 2016: 25 · 2015: 30 · 2014: 22 · 2013: 27 · 2012: 18
FWCI
10.34
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK-18904)
  • National Center for Research Resources (RR 00065, M01RR000065)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Ovarian function and disorders
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal and reproductive studies
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
Keywords
hyperinsulinemia, sex hormone-binding globulin, polycystic ovary syndrome, obesity, insulin resistance, diazoxide, leuprolide, GnRH agonist, testosterone, androstenedione, estradiol, estrone, glucose tolerance, insulin secretion, ovarian steroidogenesis, glucose-insulin interaction, insulin sensitivity index, insulin resistance index
MeSH terms
Adult, Androstenedione, Diazoxide, Estradiol, Estrone, Female, Glucose Tolerance Test, Humans, Insulin, Insulin Resistance, Gonadotropin-Releasing Hormone, Obesity, Polycystic Ovary Syndrome, Progesterone, Sex Hormone-Binding Globulin, Testosterone, Androstane-3,17-diol, Leuprolide

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