Evidence map›Paper›PMID 22874065›Full record

ArticleThyroid : official journal of the American Thyroid Association2012

Regulation of dual oxidase expression and H2O2 production by thyroglobulin.

Aya Yoshihara, Takeshi Hara, Akira Kawashima, Takeshi Akama, Kazunari Tanigawa, Huhehasi Wu, Mariko Sue, Yuko Ishido, Naoki Hiroi, Norihisa Ishii and 2 more

Abstract read
In one paragraph

Article in Thyroid : official journal of the American Thyroid Association, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

22 citing papers in PubMed, 42 citations in OpenAlex.

  1. Article
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  3. Review
  4. Article
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  7. Article
  8. Article
  9. Review
  10. Review
  11. Review
  12. HAntioxidants (Basel, Switzerland) · 2019
    Review
  13. [Progress in the research of negative feedback effect of thyroglobulin].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2019
    Review
  14. Article
  15. Review
  16. Review
  17. Intrinsic regulation of thyroid function by thyroglobulin.Thyroid : official journal of the American Thyroid Association · 2014
    Review
  18. Article
  19. Iodide transport: implications for health and disease.International journal of pediatric endocrinology · 2014
    Article
  20. Review
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

12 authors at 2 institutions in 1 country.

Aya YoshiharaLaboratory of Molecular Diagnostics, Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan.
Takeshi Hara
Akira Kawashima
Takeshi Akama
Kazunari Tanigawa
Huhehasi Wu
Mariko Sue
Yuko Ishido
Naoki Hiroi
Norihisa Ishii
Gen Yoshino
Koichi Suzuki
National Institute of Infectious Diseases · JPToho University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThyroglobulin (Tg) is a macromolecular precursor in thyroid hormone synthesis to which iodine is stably bound. Tg, which is stored in the follicular space, is also a potent negative feedback regulator of follicular function, and this is achieved by suppressing mRNA levels of thyroid-specific genes such as the sodium/iodide symporter (Slc5a5), Tg, and thyroid peroxidase. Dual oxidase 1 (DUOX1) and DUOX2, originally identified in the thyroid, are nicotinamide adenine dinucleotide phosphate (NADPH) oxidases that are necessary to produce the H2O2 required for thyroid hormone biosynthesis. Since follicular Tg regulates the expression of genes that are essential for thyroid hormone synthesis, we hypothesized that Tg might also regulate DUOX expression and H2O2 production.

methodsRat thyroid FRTL-5 cells were treated with Tg, and the mRNA expression of Duox1 and Duox2 and their corresponding maturation factors Duoxa1 and Duoxa2 were evaluated by DNA microarray and real-time PCR. Duox2 promoter activity was examined by luciferase reporter gene assay. Protein levels of DUOX2 were also examined by Western blot analysis. Intracellular H2O2 generation was quantified by a fluorescent dye, 5-(and-6)-chloromethyl-2',7'-dichlorodihydrofluorescein diacetate, and acetyl ester (CM-H2DCFDA).

resultsmRNA levels of Duox2 and its activation factor Duoxa2 (but not Duox1 or Duoxa1) were significantly suppressed by Tg in a dose-dependent manner and a time-dependent fashion in rat thyroid FRTL-5 cells. DUOX2 promoter activity was significantly suppressed by Tg in a dose-dependent manner. Protein levels of DUOX2 and H2O2 generation in cells were also reduced by Tg treatment.

conclusionsWe show that physiological concentrations of Tg suppressed the expression and function of DUOX2 in thyroid cells. These results suggest that Tg is a strong suppressor of the expression and the activity of DUOX2/DUOXA2, thereby regulating iodide organification and hormone synthesis in the thyroid. The evidence supports a reported model in which accumulated Tg in thyroid follicles plays important roles in autoregulating the function of individual follicles, which produces the basis of follicular heterogeneity.

Indexed as

AnimalsCells, CulturedDual OxidasesFlavoproteinsHydrogen PeroxideMembrane ProteinsNADPH OxidasesRatsRNA, MessengerThyroglobulinThyroid GlandDual OxidasesDuox2 protein, ratDUOXA2 protein, ratFlavoproteinsHydrogen PeroxideMembrane ProteinsNADPH OxidasesRNA, MessengerThyroglobulin

Identifiers

PMID22874065
PMCPMC3462396
OpenAlexW2166288060

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.