Cited by 258Thyroid Disorders and TreatmentsChemical Analysis and Environmental ImpactThyroid Cancer Diagnosis and Treatment

Propylthiouracil inhibits the conversion of l-thyroxine to l-triiodothyronine

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Oppenheimer, Jack H., Schwartz, Harold L., Surks, Martin I.·1972·Journal of Clinical Investigation

Abstract

6-n-propylthiouracil (PTU) administered to male Sprague-Dawley rats maintained on 2 and 5 mug L-thyroxine (T(4))/100 g body weight resulted in a marked reduction in the rate of conversion of L-thyroxine to L-triiodothyronine (T(3)). These effects could not be ascribed to induced hypothyroidism since the group maintained on 5 mug T(4)/day had normal levels of liver mitochondrial alpha glycerophosphate dehydrogenase. In confirmation of previous studies, PTU also reduced the fractional rate of deiodination of T(3). These observations provide a possible explanation of the many published observations indicating that PTU antagonizes the tissue effects of T(4) but not of T(3). The data suggest that monodeiodination of T(4) but not of T(3) is essential before hormonal effects can be manifested at the cellular level.

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Crossref · 10.1172/jci107063

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  • Propylthiouracil (PTU) inhibits D1, explaining some of its therapeutic benefit in this setting.

    “Propylthiouracil (PTU) inhibits D1, explaining some of its therapeutic benefit in this setting (14).”

    From Guidelines for the Treatment of Hypothyroidism: Prepared by the American Thyroid Association Task Force on Thyroid Hormone Replacement (2014) · cites this paper as [14]

    The Results report that PTU markedly reduced conversion of T4 to T3 in rats, and the Introduction links reduced conversion to weaker T4 effects. But the Discussion says the site of inhibition was unknown; the paper does not identify D1 or establish a therapeutic benefit in the citing sentence’s setting. Page numbers were not available in our copy. (LLM, conf=0.88)

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Research works printed but not linked: 1

  1. Oppenheimer, J. H., D. Koerner, H. L. Schwartz, and M. I. Surks. Specific nuclear triiodothyronine binding sites in rat liver and kidney. J. Clin. Endocrinol. Metab. In press.

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Authors
Oppenheimer, J. H., Schwartz, H. L., & Surks, M. I.
Affiliations
Albert Einstein College of Medicine (US)
Venue
Journal of Clinical Investigation
Published
1972-09-01
Volume
51
Issue
9
Pages
2493-2497
ISSN
0021-9738 (ISSN-L)
OpenAlex
W1758817371
Cited by
258
References
36
Citations by year
2024: 3 · 2023: 2 · 2022: 5 · 2021: 1 · 2020: 2 · 2019: 1 · 2018: 1 · 2017: 3 · 2016: 2 · 2015: 3 · 2014: 4 · 2013: 2 · 2012: 6
FWCI
16.77
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Health Research Council of the City of New York
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Chemical Analysis and Environmental Impact
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Cancer Diagnosis and Treatment
Keywords
propylthiouracil, levothyroxine, triiodothyronine, T4 to T3 conversion, deiodination, thyroid hormone antagonism, alpha-glycerophosphate dehydrogenase, liver mitochondria, hypothyroidism
MeSH terms
Administration, Oral, Animals, Chromatography, Paper, Chromatography, Thin Layer, Glucosephosphate Dehydrogenase, Injections, Subcutaneous, Iodine Radioisotopes, Male, Mitochondria, Liver, Propylthiouracil, Thyroidectomy, Thyroxine, Triiodothyronine, Rats

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