Cited by 72Growth Hormone and Insulin-like Growth FactorsThyroid Disorders and TreatmentsPituitary Gland Disorders and Treatments

Blunted Growth Hormone (GH) Response to GH-Releasing Hormone in Hypothyroidism Resolves in the Euthyroid State*

WILLIAMS, TIMOTHY, MAXON, HARRY, THORNER, MICHAEL O., FROHMAN, LAWRENCE A.·1985·The Journal of Clinical Endocrinology & Metabolism

Abstract

GH secretion is dependent upon thyroid hormone availability. In this study, the GH response to GH-releasing hormone (GHRH) was studied in a group of patients when they were hypothyroid and also when they were euthyroid. Hypothyroidism was associated with a significant reduction in both the peak GH response and the integrated GH secretory response to GHRH compared to those in the euthyroid state [4.7 +/- 1.6 (+/- SEM) vs. 12.2 +/- 3.9 ng/ml (P less than 0.025), and 349 +/- 116 ng vs. 986 +/- 304 ng ml-1 min-1 (P less than 0.025), respectively]. GH responsiveness was impaired within 2 weeks of discontinuation of T3 treatment in athyreotic subjects and was restored within 4 weeks of T4 treatment in one chronically hypothyroid subject. The results imply that a blunted GH response to GHRH in hypothyroidism is attributable to a primary pituitary defect that occurs rapidly and is reversible with attainment of the euthyroid state.

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Crossref · 10.1210/jcem-61-3-454

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23 of 23 references verified0 citation errors · 0 not checkable

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Authors
WILLIAMS, T., MAXON, H., THORNER, M. O., & FROHMAN, L. A.
Affiliations
University of Virginia (US)
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
1985-09
Volume
61
Issue
3
Pages
454-456
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2021679893
Cited by
72
References
23
Citations by year
2025: 1 · 2024: 1 · 2021: 2 · 2018: 1 · 2016: 1 · 2012: 1
FWCI
5.62
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • University of Virginia
  • National Institutes of Health (5r01am030667-05, 5r01am032632-03)
  • National Center for Research Resources (RR-0068)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Pituitary Gland Disorders and Treatments
Keywords
growth hormone secretion, growth hormone-releasing hormone, hypothyroidism, euthyroidism, thyroid hormones, triiodothyronine, levothyroxine, athyroidism
MeSH terms
Adult, Female, Humans, Hypothyroidism, Middle Aged, Growth Hormone, Growth Hormone-Releasing Hormone, Thyrotropin, Thyroxine, Triiodothyronine

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