Evidence map›Paper›PMID 18854032›Full record

ArticleBMC developmental biology2008

Thyroid hormone components are expressed in three sequential waves during development of the chick retina.

Jeffrey M Trimarchi, Sanjiv Harpavat, Nathan A Billings, Constance L Cepko

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In one paragraph

Article in BMC developmental biology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

48 citing papers in PubMed, 86 citations in OpenAlex.

  1. Review
  2. Article
  3. The hourglass of high acuity vision: Cone plasticity at the intersection of time and space shapes the foveola.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  5. Review
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  7. Enhanced Transcriptional Activation in Developing Mouse Photoreceptors.Investigative ophthalmology & visual science · 2025
    Article
  8. Article
  9. Article
  10. Cross-species applicability of an adverse outcome pathway network for thyroid hormone system disruption.Toxicological sciences : an official journal of the Society of Toxicology · 2023
    Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Patterning and Development of Photoreceptors in the Human Retina.Frontiers in cell and developmental biology · 2022
    Review
  17. Review
  18. Article
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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

4 authors at 3 institutions in 1 country.

Jeffrey M TrimarchiDepartment of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA. jtrimarc@receptor.med.harvard.edu
Sanjiv Harpavat
Nathan A Billings
Constance L Cepko
Harvard University · USHoward Hughes Medical Institute · USTexas Children's Hospital · US

Funding

Howard Hughes Medical Institute
6 · The paper itself

Abstract

backgroundThyroid hormone (TH) is an important developmental regulator in many tissues, including the retina. TH is activated locally via deiodinase 2 (Dio2), and it is destroyed by deiodinase 3 (Dio3). The TH receptors, TRa and TRb, mediate TH activity through hormone and DNA binding, and interactions with transcription regulators.

resultsIn the current work, the expression of these TH components was examined in the chick retina over time. Three waves of expression were characterized and found to be correlated with critical developmental events. The first wave occurred as progenitor cells began to make photoreceptors, the second as some cell types adopted a more mature location and differentiation state, and the third as Müller glia were generated. The cell types expressing the components, as well as the kinetics of expression within the cell cycle, were defined. TRb expression initiated during G2 in progenitor cells, concomitant with NeuroD and Otx2, which are expressed in early photoreceptor cells. TRb was expressed in photoreceptor cells for several days and then was reduced in expression level, as the expression of Crx, a later photoreceptor gene, became more evident. Dio3 was expressed throughout the cell cycle in progenitor cells. TRa was in most, if not all, retinal cells. Dio2 appeared transiently in a ventral (high) to dorsal gradient, likely in a subset of photoreceptor cells.

conclusionMultiple TH components were expressed in dynamic patterns in cycling progenitor cells and photoreceptors cells across the developing chick retina. These dynamic patterns suggest that TH is playing several roles in retinal development, both within the cycling progenitor cells and possibly with respect to the timing of differentiation of photoreceptor cells.

Indexed as

Gene Expression Regulation, DevelopmentalAnimalsApoptosisCell DifferentiationChick EmbryoGene Expression Regulation, EnzymologicIodide PeroxidaseIodothyronine Deiodinase Type IINeurogenesisOrgan SpecificityReceptors, Thyroid HormoneRetinaStem CellsThyroid HormonesTime FactorsIodide PeroxidaseIodothyronine Deiodinase Type IIiodothyronine deiodinase type IIIReceptors, Thyroid HormoneThyroid Hormones

Identifiers

PMID18854032
PMCPMC2579430
OpenAlexW2169249307

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.