Evidence map›Paper›PMID 32980989›Full record

ArticleClinical and experimental medicine2021

Thyroid peroxidase in human endometrium and placenta: a potential target for anti-TPO antibodies.

Reyhane Rahnama, Ahmad-Reza Mahmoudi, Somayeh Kazemnejad, Mansour Salehi, Ataollah Ghahiri, Haleh Soltanghoraee, Sedigheh Vafaei, Abbas Rezaei, Amir Hassan Zarnani

Abstract read
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In one paragraph

Article in Clinical and experimental medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 11% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 43 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Infertility and Auto-Antibodies: A Review.Antibodies (Basel, Switzerland) · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Endocrine Autoimmunity in Pregnancy.Frontiers in immunology · 2022
    Review
  14. Article
  15. 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

9 authors at 4 institutions in 1 country.

Reyhane RahnamaDepartment of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
Ahmad-Reza MahmoudiImmunology Research Center, Institute of Immunology and Infectious Diseases, Iran University of Medical Sciences, Tehran, Iran.
Somayeh KazemnejadReproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran.
Mansour SalehiDepartment of Genetic, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
Ataollah GhahiriDepartment of Gynecology and Obstetrics, Al-Zahra University Hospital, Isfahan University of Medical Sciences, Isfahan, Iran.
Haleh SoltanghoraeeAvicenna Infertility Clinic, Avicenna Research Institute, ACECR, Tehran, Iran.
Sedigheh VafaeiReproductive Immunology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran.
Abbas RezaeiDepartment of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran. Rezaei@mui.ac.ir.
Amir Hassan ZarnaniReproductive Immunology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran. zarnania@gmail.com.ORCID http://orcid.org/0000-0003-4503-299X
Isfahan University of Medical Sciences · IRAcademic Center for Education, Culture and Research · IRIran University of Medical Sciences · IRRoyan Institute · IR

Funding

Avicenna Research Institute 96-035Iran National Science Foundation 95818097Isfahan University of Medical Sciences 395057
6 · The paper itself

Abstract

Autoimmune thyroid disease is the most common endocrine disorder during pregnancy. Thyroid autoantibodies (TAs) have been suggested to serve a role in implantation failure and spontaneous abortion. Until now, there are no data on the potential interaction of TAs with human reproductive organs. Here, we set out for the first time to test this hypothesis by studying the expression of thyroid peroxidase (TPO) at gene and protein level in human reproductive organs. Endometrial samples were taken from normal women, and placenta tissues were collected after full-term caesarian section. Expression of TPO messenger RNA (mRNA) was investigated by qRT-PCR. In addition, polyclonal anti-TPO antibodies were produced and the expression of TPO protein in mentioned tissues was evaluated by immunohistochemistry and Western blot analysis. The reactivity of anti-TPO antibody in human embryos was evaluated by immunofluorescent staining. For the first time, our study showed that TPO is expressed at gene and protein levels in endometrium and placenta. TPO expression was mainly localized to glandular and luminal epithelial cells in the endometrium. In placenta, the syncytiotrophoblasts and invasive trophoblast cells were the main cell types that expressed TPO protein. Specific band of approximately 110 kDa was observed in all endometrial and placental tissues by Western blot analysis. However, no expression of TPO protein was observed in human embryo. TPO expression in endometrium and placenta may explain higher frequency of abortion and infertility in patients with thyroid autoimmunity.

Indexed as

AnimalsAntibodiesAutoantibodiesAutoantigensEmbryo, MammalianEndometriumFemaleFollow-Up StudiesHumansIodide PeroxidaseIron-Binding ProteinsPlacentaPregnancyRabbitsAntibodiesAutoantibodiesAutoantigensIodide PeroxidaseIron-Binding ProteinsTPO protein, humanAbortionEmbryoEndometriumThyroid autoimmunityTPO

Identifiers

PMID32980989
OpenAlexW3087839644

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.