Evidence map›Paper›PMID 25523946›Full record

ArticleHormones & cancer2015

The relationship between bilateral oophorectomy and plasma hormone levels in postmenopausal women.

Joanne Kotsopoulos, Amy L Shafrir, Megan Rice, Susan E Hankinson, A Heather Eliassen, Shelley S Tworoger, Steven A Narod

Open access · bronzeAbstract read
In one paragraph

Article in Hormones & cancer, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 16% 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, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. One size does not fit all: how type of menopause and hormone therapy matters for brain health.The British journal of psychiatry : the journal of mental science · 2025
    Review
  6. Review
  7. Review
  8. Estimated Ovulatory Years Prior to Menopause and Postmenopausal Endogenous Hormone Levels.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2023
    Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. International journal of reproductive biomedicine · 2021
    Article
  14. Definition, Prevalence, and Risk Factors of Low Sex Hormone-Binding Globulin in US Adults.The Journal of clinical endocrinology and metabolism · 2021
    Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article
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

7 authors at 4 institutions in 2 countries.

Joanne KotsopoulosWomen's College Research Institute, Women's College Hospital, 790 Bay Street, 7th Floor, Toronto, ON, Canada.
Amy L Shafrir
Megan Rice
Susan E Hankinson
A Heather Eliassen
Shelley S Tworoger
Steven A Narod
Brigham and Women's Hospital · USHarvard University · USUniversity of Toronto · CAUniversity of Massachusetts Amherst · US

Funding

Statistical MethodsP01CA087969 · NCI · BRIGHAM AND WOMEN'S HOSPITAL · PI ROSNER, BERNARD A · 2000 to 2019
$77.8M
Training Program in Cancer EpidemiologyT32CA009001 · NCI · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI A. Heather Eliassen, Meir Stampfer · 1985 to 2026
$17.3M
BIOCHEMICAL MARKERS IN THE NURSES'HEALTH STUDY COHORTR01CA049449 · NCI · BRIGHAM AND WOMEN'S HOSPITAL · PI HANKINSON, SUSAN E · 1989 to 2008
$11.3M
Risk Factors for Ischemic Stroke in WomenR01HL088521 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI REXRODE, KATHRYN M · 2008 to 2025
$9.9M
Predoctoral Training Program in Reproductive, Perinatal & Pediatric EpidemiologyT32HD060454 · NICHD · HARVARD SCHOOL OF PUBLIC HEALTH · PI MICHELS, KARIN B · 2010 to 2014
$1.1M
NCI NIH HHS P01 CA087969NCI NIH HHS P01 CA87969NCI NIH HHS R01 CA049449NCI NIH HHS R01 CA49449NCI NIH HHS T32 CA009001NCI NIH HHS T32CA09001NHLBI NIH HHS R01 HL088521NICHD NIH HHS T32 HD060454
6 · The paper itself

Abstract

Oophorectomy prior to natural menopause reduces breast cancer risk. We evaluated whether timing of oophorectomy (during premenopause vs. postmenopause) or hysterectomy was associated with hormone levels, specifically estradiol, estrone, estrone sulfate, testosterone, sex hormone binding globulin (SHBG), dehydroepiandrosterone sulfate (DHEAS), and prolactin, using data from the Nurses' Health Study. We included 2,251 postmenopausal women not using hormones who provided blood samples in 1989-1990 and/or 2000-2002, and who were controls in various nested case-control studies. We used multivariate linear mixed-effects models to assess geometric mean hormone levels by surgery status. Bilateral oophorectomy was associated with 25% lower testosterone levels versus women with natural menopause (20.8 vs. 15.5 ng/dL) (P < 0.0001) with no effect of timing of surgery (P = 0.80). SHBG levels were lower among women with a premenopausal oophorectomy (52.2 nmol/L) versus those with natural menopause (58.1 nmol/L) or a postmenopausal oophorectomy (62.0 nmol/L) (P = 0.02). There was no significant association of oophorectomy with estradiol, estrone, estrone sulfate, DHEAS, or prolactin levels (P ≥ 0.23). A simple hysterectomy was associated with a significant 8% lower testosterone (P = 0.03) and 14 % lower DHEAS (P = 0.02) levels compared with women with natural menopause but not with other hormone levels. Although limited by small numbers, our findings suggest no differential influence of timing of surgery on sex hormone levels. The reduction of testosterone levels in women with oophorectomy or hysterectomy suggests a possible role of this hormone in postmenopausal breast cancer development.

Indexed as

OvariectomyPostmenopauseAdultAgedAged, 80 and overCase-Control StudiesFemaleGonadal Steroid HormonesHormonesHumansMiddle AgedRisk FactorsGonadal Steroid HormonesHormones

Identifiers

PMID25523946
PMCPMC4496792
OpenAlexW1968681830

What OpenQuestion holds

Textmetadata
LicenceTDM
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.