Cited by 28Adipose Tissue and MetabolismThyroid Disorders and TreatmentsRegulation of Appetite and Obesity

Impaired Metabolic Effects of a Thyroid Hormone Receptor Beta-Selective Agonist in a Mouse Model of Diet-Induced Obesity

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Castillo, Melany, Freitas, Beatriz C.G., Rosene, Matthew L., Drigo, Rafael A., Grozovsky, Renata, Maciel, Rui M.B., Patti, Mary Elizabeth, Ribeiro, Miriam O. +1 more·2010·Thyroid

Abstract

BACKGROUND: The use of selective agonists of the thyroid hormone receptor isoform beta (TRbeta) has been linked to metabolic improvement in animal models of diet-induced obesity, nonalcoholic liver disease, and genetic hypercholesterolemia. METHODS: To identify potential target tissues of such compounds, we exposed primary murine brown adipocytes and skeletal myocytes for 24 hours to 50 nM GC-24, a highly selective TRbeta agonist. GC-24 (17 ng/[g BW.day] for 36 days) was also tested in a mouse model of diet-induced obesity. RESULTS: While the brown adipocytes responded to GC-24, with 17%-400% increases in the expression of 12 metabolically relevant genes, the myocytes remained largely unresponsive to GC-24 treatment. In control mice kept on chow diet, GC-24 treatment accelerated energy expenditure by about 15% and limited body weight gain by about 50%. However, in the obese animals the GC-24-mediated reduction in body weight gain dropped to only 20%, while energy expenditure remained unaffected. In addition, an analysis of gene expression in the skeletal muscle, brown adipose tissue, and liver of these obese animals failed to identify a conclusive GC-24 transcriptome footprint. CONCLUSION: Feeding a high-fat diet impairs most of the beneficial metabolic effects associated with treatment with TRbeta-selective agonists.

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Crossref · 10.1089/thy.2009.0318

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  • A high-fat diet can reduce expression of transcriptional regulators necessary for T3 signaling in the liver.

    “For example, there is considerable evidence that a high-fat diet can reduce the expression of transcriptional regulators that are necessary for T3 signaling in the liver (73–75).”

    From Emerging Therapies in Hypothyroidism (2024) · cites this paper as [75]

    The Discussion (page unavailable) reports impaired thyroid-hormone signaling in the liver of high-fat-fed mice and suggests that reduced levels of Pgc-1, a TR coactivator, might explain it. It calls that mechanism unknown, however, and does not establish reduced expression of multiple transcriptional regulators necessary for T3 signaling. (LLM, conf=0.84)

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Authors
Castillo, M., Freitas, B. C. G., Rosene, M. L., Drigo, R. A., Grozovsky, R., Maciel, R. M. B., Patti, M. E., Ribeiro, M. O., & Bianco, A. C.
Affiliations
  • University of Miami (US)
  • Universidade Federal de São Paulo (BR)
  • Joslin Diabetes Center (US)
  • Universidade Presbiteriana Mackenzie (BR)
Corresponding author
Bianco, Antonio C.
Venue
Thyroid
Published
2010-05
Volume
20
Issue
5
Pages
545-553
ISSN
  • 1050-7256 (ISSN-L)
  • 1557-9077
OpenAlex
W2081953333
Cited by
28
References
31
Citations by year
2026: 1 · 2024: 2 · 2023: 3 · 2022: 1 · 2021: 1 · 2020: 3 · 2019: 1 · 2017: 1 · 2016: 1 · 2015: 1 · 2014: 4 · 2013: 2
FWCI
1.95
Type
journal article
Language
en
Open access
Locations
  • Thyroid (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • UNIFESP Institutional Repository (Universidade Federal de São Paulo) (submittedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (DK 65055, R01DK065055)
Topics
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
Keywords
thyroid hormone receptor beta, diet-induced obesity, high-fat diet, brown adipocytes, skeletal muscle, energy expenditure, weight gain, gene expression, metabolic effects
MeSH terms
Acetates, Animals, Benzhydryl Compounds, Body Weight, Calorimetry, Indirect, Cells, Cultured, Diet, Energy Metabolism, Male, Metabolism, Mice, Inbred C57BL, Obesity, Organ Size, RNA, Messenger, Triiodothyronine, Gene Expression, Muscle Fibers, Skeletal, Anti-Obesity Agents, Thyroid Hormone Receptors beta, Mice, Adipocytes, Brown

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