Evidence map›Paper›PMID 21652727›Full record

ArticleEndocrinology2011

Type-2 iodothyronine 5'deiodinase (D2) in skeletal muscle of C57Bl/6 mice. II. Evidence for a role of D2 in the hypermetabolism of thyroid hormone receptor alpha-deficient mice.

W Ramadan, A Marsili, P R Larsen, A M Zavacki, J E Silva

Open access · bronzeAbstract read
In one paragraph

Article in Endocrinology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.3field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 35 citations in OpenAlex.

  1. Trial
  2. Global loss of selenocysteine lyase in mice drives lipid accumulation in brown adipocytes.American journal of physiology. Endocrinology and metabolism · 2026
    Article
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  7. Selenium and selenoproteins in thermogenic adipocytes.Archives of biochemistry and biophysics · 2022
    Review
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  13. Article
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  15. Article
  16. Article
  17. The brain and brown fat.Annals of medicine · 2015
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

W RamadanBaystate Medical Center, Tufts University School of Medicine, Springfield, Massachusetts 01199, USA.
A Marsili
P R Larsen
A M Zavacki
J E Silva
Harvard University · USTufts University · USBrigham and Women's Hospital · US

Funding

PHYSIOLOGY OF THYROID HORMONE-DEPENDENT GENE EXPRESSIONR01DK044128 · NIDDK · BRIGHAM AND WOMEN'S HOSPITAL · PI LARSEN, PHILIP REED, ZAVACKI, ANN M · 1992 to 2018
$6.8M
Role of Deiodinases in Thyroid Hormone HomeostasisR01DK076117 · NIDDK · BRIGHAM AND WOMEN'S HOSPITAL · PI ZAVACKI, ANN M · 2006 to 2010
$1.5M
NIDDK NIH HHS DK076117NIDDK NIH HHS DK 44128NIDDK NIH HHS R01 DK044128NIDDK NIH HHS R01 DK076117
6 · The paper itself

Abstract

Mice with ablation of the Thra gene have cold intolerance due to an as yet undefined defect in the activation of brown adipose tissue (BAT) uncoupling protein (UCP). They develop an alternate form of facultative thermogenesis, activated at temperatures below thermoneutrality and associated with hypermetabolism and reduced sensitivity to diet-induced obesity. A consistent finding in Thra-0/0 mice is increased type-2 iodothyronine deiodinase (D2) mRNA in skeletal muscle and other tissues. With an improved assay to measure D2 activity, we show here that this enzyme activity is increased in proportion to the mRNA and as a function of the ambient cold. The activation is mediated by the sympathetic nervous system in Thra-0/0, as it is in wild-type genotype mice, but the sympathetic nervous system effect is greater in Thra-0/0 mice. Using D2-ablated mice (Dio2-/-), we reported elsewhere and show here that, in spite of sharing a severe deficiency in BAT thermogenesis with Thra-0/0 and UCP1-knockout mice, they do not have an increase in oxygen consumption, and they gain more weight than wild-type controls when fed a high-fat diet. UCP3 mRNA is highly responsive to thyroid hormone, and it is increased in Thra-0/0 mice, particularly when fed high-fat diets. We show here that muscle UCP3 mRNA in hypothyroid Thra-0/0 mice is responsive to small dose-short regimens of T(4), indicating a role for locally, D2-generated T(3). Lastly, we show that bile acids stimulate not only BAT but also muscle D2 activity, and this is associated with stimulation of muscle UCP3 mRNA expression provided T(4) is present. These observations strongly support the concept that enhanced D2 activity in Thra-0/0 plays a critical role in their alternate form of facultative thermogenesis, stimulating increased fat oxidation by increasing local T(3) generation in skeletal muscle.

Indexed as

AnimalsIodide PeroxidaseIodothyronine Deiodinase Type IIIon ChannelsMiceMice, Inbred C57BLMitochondrial ProteinsMuscle, SkeletalRNA, MessengerThermogenesisThyroid Hormone Receptors alphaUncoupling Protein 3Iodide PeroxidaseIodothyronine Deiodinase Type IIIon ChannelsMitochondrial ProteinsRNA, MessengerThyroid Hormone Receptors alphaUcp3 protein, mouseUncoupling Protein 3

Identifiers

PMID21652727
PMCPMC3138235
OpenAlexW1979214108

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.