Cited by 152Growth Hormone and Insulin-like Growth FactorsHypothalamic control of reproductive hormonesPituitary Gland Disorders and Treatments

Estrogen receptor blockade with tamoxifen diminishes growth hormone secretion in boys: evidence for a stimulatory role of endogenous estrogens during male adolescence.

Metzger, D L, Kerrigan, J R·1994·The Journal of Clinical Endocrinology & Metabolism

Abstract

The increase in GH production during the male adolescent growth spurt has been attributed to both androgen and estrogen receptor-mediated processes. To evaluate the role of endogenous estrogens in the control of GH secretion, we administered the estrogen receptor antagonist tamoxifen to 10 late pubertal males. Blood samples were obtained for GH determination at 10-min intervals on 2 occasions during the last 24 h of a 4-day course of either tamoxifen or placebo. Waveform-specific, multiple parameter deconvolution analysis was employed to assess GH secretory and elimination dynamics. Estrogen receptor blockade resulted in a significant (P < 0.05) diminution in mean 24-h serum GH concentrations, from 3.9 +/- 1.0 (placebo; mean +/- SEM) to 2.7 +/- 0.6 micrograms/L (tamoxifen). This was associated with a significant (P < 0.01) decline in the GH production rate [237 +/- 55 vs. 155 +/- 33 micrograms/L GH distribution volume (Lv).24 h]. Furthermore, this reduction in GH secretion was the result of significant decreases in both the maximal GH secretory rate (0.46 +/- 0.08 vs. 0.34 +/- 0.06 microgram/Lv.min; P < 0.01) and, to a smaller degree, GH secretory burst number (16 +/- 1 vs. 14 +/- 1/24 h; P < 0.05). There was also a trend toward reduced mass of GH secreted per burst (13.3 +/- 2.5 vs. 10.3 +/- 2.0 micrograms/Lv; P = 0.06). No significant alterations in either GH elimination t1/2 or GH secretory burst half-duration were observed during estrogen receptor antagonism. Tamoxifen tr…

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Crossref · 10.1210/jcem.79.2.8045971

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Authors
Metzger, D. L., & Kerrigan, J. R.
Affiliations
University of Virginia (US)
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
1994-08
Volume
79
Issue
2
Pages
513-518
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2026707439
Cited by
152
References
34
Citations by year
2026: 1 · 2025: 1 · 2024: 3 · 2022: 2 · 2021: 1 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 2 · 2016: 4 · 2015: 1 · 2014: 5 · 2013: 2
FWCI
4.10
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Digital Commons - East Tennessee State University (East Tennessee State University) (submittedVersion)
Funders
  • National Institutes of Health (5k08hd000926-03)
  • National Institute of Diabetes and Digestive and Kidney Diseases (T32 DK 07642, T32DK007642)
  • National Center for Research Resources (RR 00847, M01RR000847)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (K08 HD00926)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Pituitary Gland Disorders and Treatments
Keywords
growth hormone secretion, tamoxifen, estrogen receptor antagonism, endogenous estrogen, male adolescence, pubertal growth spurt, somatotropic axis, insulin-like growth factor I, boys, luteinizing hormone, testosterone, estradiol, IGF binding protein-3, deconvolution
MeSH terms
Adolescent, Estrogens, Humans, Insulin-Like Growth Factor I, Male, Puberty, Receptors, Estrogen, Growth Hormone, Tamoxifen

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