Evidence map›Paper›PMID 20858755›Full record

ArticleAmerican journal of physiology. Endocrinology and metabolism2010

Maintenance of the thyroid axis during diet-induced obesity in rodents is controlled at the central level.

Mario Perello, Isin Cakir, Nicole E Cyr, Amparo Romero, Ronald C Stuart, Franck Chiappini, Anthony N Hollenberg, Eduardo A Nillni

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in American journal of physiology. Endocrinology and metabolism, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
1.8field-weighted citation impact, top 17% 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

41 citing papers in PubMed, 79 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Review
  8. Article
  9. Obesity and Thyroid Axis.International journal of environmental research and public health · 2021
    Review
  10. Review
  11. Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Deletion of p22JCI insight · 2017
    Article
  20. Advances in TRH signaling.Reviews in endocrine & metabolic disorders · 2016
    Review
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

8 authors at 3 institutions in 1 country.

Mario PerelloDiv. of Endocrinology, Brown Medical School, Providence, RI 02903, USA.
Isin Cakir
Nicole E Cyr
Amparo Romero
Ronald C Stuart
Franck Chiappini
Anthony N Hollenberg
Eduardo A Nillni
Brown University · USRhode Island Hospital · USHarvard University · US

Funding

PROTRH GENE TRANSCRIPTION AND BIOSYNTHESIS BY LEPTINR01DK058148 · NIDDK · RHODE ISLAND HOSPITAL (PROVIDENCE, RI) · PI NILLNI, EDUARDO A. · 2000 to 2008
$2.4M
Negative regulation by thyroid hormoneR01DK078090 · NIDDK · BETH ISRAEL DEACONESS MEDICAL CENTER · PI HOLLENBERG, ANTHONY N · 2007 to 2010
$1.4M
NIDDK NIH HHS R01 DK-078090NIDDK NIH HHS R01-DK-58148
6 · The paper itself

Abstract

The hypothalamic-pituitary-thyroid (HPT) axis is a major contributor in maintaining energy expenditure and body weight, and the adipocyte hormone leptin regulates this axis by increasing TRH levels in the fed state. Leptin stimulates TRH directly in the hypothalamic paraventricular nucleus (PVN; direct pathway) and indirectly by regulating proopiomelnocortin neurons in the hypothalamic arcuate nucleus (ARC; indirect pathway). Whereas the indirect pathway is fully functional in lean animals, it is inactive during diet-induced obesity (DIO) because of the establishment of leptin resistance. Despite this, the HPT axis activity in obese humans and rodents remains within the normal levels or slightly higher. Therefore, in this study, we aimed to determine the mechanism(s) by which the HPT axis is still active despite leptin resistance. With a combination of using the Sprague-Dawley rat physiological model and the Zuker rat that bears a mutation in the leptin receptor, we were able to demonstrate that under DIO conditions the HPT axis is regulated at the central level, but only through the direct pathway of leptin action on TRH neurons. Deiodinase enzymes, which are present in many tissues and responsible for converting thyroid hormones, were not statistically different between lean and DIO animals. These data suggest that the increase in T(4/3) seen in obese animals is due mostly to central leptin action. We also found that T(3) feedback inhibition on the prepro-TRH gene is controlled partially by leptin-induced pSTAT3 signaling via the TRH promoter. This interactive relationship between T(3) and pSTAT3 signaling appears essential to maintain the HPT axis at normal levels in conditions such as obesity.

Indexed as

Analysis of VarianceAnimalsBlotting, WesternBody TemperatureDietEnergy MetabolismHypothalamo-Hypophyseal SystemHypothalamusImmunohistochemistryLeptinLinear ModelsMaleNeuronsObesityRadioimmunoassayRatsLeptinReceptors, LeptinThyrotropin-Releasing HormoneThyroxineTriiodothyronine

Identifiers

PMID20858755
PMCPMC3006258
OpenAlexW2007697011

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.