Cited by 198Thyroid Disorders and TreatmentsGrowth Hormone and Insulin-like Growth FactorsEstrogen and related hormone effects

Pituitary nuclear 3,5,3’-triiodothyronine and thyrotropin secretion: an explanation for the effect of thyroxine

Silva, J. E., Larsen, P. R.·1977·Science

Abstract

An excellent correlation was observed between nuclear triiodothyronine (T 3 ) and the ensuing suppression of thyrotropin (TSH) after a single intravenous injection of T 3 to thyroidectomized (hypothyroid) rats. At 1 and 2 hours after injection of thyroxine (T 4 ), in amounts equally potent to the administered T 3 in terms of acute suppression of TSH, the same quantities of T 3 were found in the pituitary nuclei. Virtually no nuclear T 4 was present, and plasma T 3 was negligible at these short intervals after T 4 injection. These results suggest that suppression of TSH release in hypothyroid rats occurs by interaction of T 3 with the nuclear receptor of the thyrotroph. After T 4 injection, the T 3 found in the nucleus is derived from rapid intrapituitary monodeiodination.

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Crossref · 10.1126/science.199941

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1 of 1 references verified0 citation errors · 0 not checkable

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  • TH homeostasis is maintained globally and locally through multiple mechanisms that coordinately regulate the production, secretion, distribution, and metabolism of THs.

    “TH homeostasis is maintained both globally and locally through multiple mechanisms that coordinately regulate the production, secretion, distribution, and metabolism of THs.”

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Authors
Silva, J. E., & Larsen, P. R.
Affiliations
Thyroid Unit, Peter Bent Brigham Hospital, Boston, Massachusetts 02115
Venue
Science
Published
1977-11-11
Volume
198
Issue
4317
Pages
617-620
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2038357159
Cited by
198
References
1
Citations by year
2026: 1 · 2025: 1 · 2023: 2 · 2022: 4 · 2021: 2 · 2019: 2 · 2017: 2 · 2016: 2 · 2015: 2 · 2014: 2 · 2013: 2 · 2012: 2
FWCI
13.01
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
Keywords
triiodothyronine, thyroxine, thyrotropin secretion, thyrotrophs, nuclear receptors, TSH suppression, hypothyroidism, thyroidectomy, thyroid hormone action
MeSH terms
Animals, Cell Nucleus, Male, Pituitary Gland, Anterior, Receptors, Cell Surface, Thyroidectomy, Thyrotropin, Thyroxine, Triiodothyronine, Rats

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