Evidence map›Paper›PMID 18288311›Full record

SynthesisEnvironmental health perspectives2008

Testicular dysgenesis syndrome and the estrogen hypothesis: a quantitative meta-analysis.

Olwenn V Martin, Tassos Shialis, John N Lester, Mark D Scrimshaw, Alan R Boobis, Nikolaos Voulvoulis

Open access · diamondAbstract readMeta-AnalysisReview
In one paragraph

Synthesis in Environmental health perspectives, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 5 pooled it
4.7field-weighted citation impact, top 5% 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

27 citing papers in PubMed, 5 syntheses or guidelines pooled it, 108 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Hazardous waste and health impact: a systematic review of the scientific literature.Environmental health : a global access science source · 2017
    Pooled it
  4. Pooled it
  5. Guideline
  6. Article
  7. Article
  8. Article
  9. Review
  10. GPER and Testicular Germ Cell Cancer.Frontiers in endocrinology · 2020
    Review
  11. Article
  12. Hypogonadism and Cryptorchidism.Frontiers in endocrinology · 2019
    Review
  13. True hermaphroditism with seminoma: A case report.Molecular and clinical oncology · 2019
    Article
  14. Testicular Cancer: Genes, Environment, Hormones.Frontiers in endocrinology · 2019
    Review
  15. Review
  16. Article
  17. Article
  18. Review
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 2 countries.

Olwenn V MartinCentre for Environmental Policy, Imperial College London, UK.
Tassos Shialis
John N Lester
Mark D Scrimshaw
Alan R Boobis
Nikolaos Voulvoulis
Centre for Policy Studies · INBrunel University of London · GBCranfield University · GBImperial College London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMale reproductive tract abnormalities such as hypospadias and cryptorchidism, and testicular cancer have been proposed to comprise a common syndrome together with impaired spermatogenesis with a common etiology resulting from the disruption of gonadal development during fetal life, the testicular dysgenesis syndrome (TDS). The hypothesis that in utero exposure to estrogenic agents could induce these disorders was first proposed in 1993. The only quantitative summary estimate of the association between prenatal exposure to estrogenic agents and testicular cancer was published over 10 years ago, and other systematic reviews of the association between estrogenic compounds, other than the potent pharmaceutical estrogen diethylstilbestrol (DES), and TDS end points have remained inconclusive.

objectivesWe conducted a quantitative meta-analysis of the association between the end points related to TDS and prenatal exposure to estrogenic agents. Inclusion in this analysis was based on mechanistic criteria, and the plausibility of an estrogen receptor (ER)-alpha-mediated mode of action was specifically explored.

resultsWe included in this meta-analysis eight studies investigating the etiology of hypospadias and/or cryptorchidism that had not been identified in previous systematic reviews. Four additional studies of pharmaceutical estrogens yielded a statistically significant updated summary estimate for testicular cancer.

conclusionsThe doubling of the risk ratios for all three end points investigated after DES exposure is consistent with a shared etiology and the TDS hypothesis but does not constitute evidence of an estrogenic mode of action. Results of the subset analyses point to the existence of unidentified sources of heterogeneity between studies or within the study population.

Indexed as

EstrogensHumansMaleTestisEstrogenscryptorchidismdiethylstilbestrolendocrine disruptionenvironmentestrogenhypospadiasmeta-analysisoral contraceptivestesticular cancertesticular dysgenesis

Identifiers

PMID18288311
PMCPMC2235228
OpenAlexW2028222093

What OpenQuestion holds

Textmetadata
LicenceCC0
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.