Evidence map›Paper›PMID 22710371›Full record

ArticleJournal of visualized experiments : JoVE2012

Ovariectomy and 17β-estradiol replacement in rats and mice: a visual demonstration.

Jakob O Ström, Annette Theodorsson, Edvin Ingberg, Ida-Maria Isaksson, Elvar Theodorsson

Open access · bronzeAbstract readVideo-Audio Media
In one paragraph

Article in Journal of visualized experiments : JoVE, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 94 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
94citing papers in PubMed, 1 pooled it
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

94 citing papers in PubMed, 1 synthesis or guideline pooled it, 116 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Ovarian hormones moderate systolic hypertension in femaleAmerican journal of physiology. Renal physiology · 2026
    Article
  7. CD4Nature communications · 2026
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Ovarian Hormones Moderate Systolic Hypertension in FemalebioRxiv : the preprint server for biology · 2025
    Article
  13. Article
  14. 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
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Review

34 more citing papers are in PubMed but not listed here.

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

5 authors at 1 institution in 1 country.

Jakob O StrömClinical Chemistry and Neurosurgery, Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University. jakob.strom@liu.se
Annette Theodorsson
Edvin Ingberg
Ida-Maria Isaksson
Elvar Theodorsson
Linköping University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Estrogens are a family of female sexual hormones with an exceptionally wide spectrum of effects. When rats and mice are used in estrogen research they are commonly ovariectomized in order to ablate the rapidly cycling hormone production, replacing the 17β-estradiol exogenously. There is, however, lack of consensus regarding how the hormone should be administered to obtain physiological serum concentrations. This is crucial since the 17β-estradiol level/administration method profoundly influences the experimental results. We have in a series of studies characterized the different modes of 17β-estradiol administration, finding that subcutaneous silastic capsules and per-oral nut-cream Nutella are superior to commercially available slow-release pellets (produced by the company Innovative Research of America) and daily injections in terms of producing physiological serum concentrations of 17β-estradiol. Amongst the advantages of the nut-cream method, that previously has been used for buprenorphine administration, is that when used for estrogen administration it resembles peroral hormone replacement therapy and is non-invasive. The subcutaneous silastic capsules are convenient and produce the most stable serum concentrations. This video article contains step-by-step demonstrations of ovariectomy and 17β-estradiol hormone replacement by silastic capsules and peroral Nutella in rats and mice, followed by a discussion of important aspects of the administration procedures.

Indexed as

Administration, OralAnimalsCapsulesDrug ImplantsEstradiolFemaleHormone Replacement TherapyMiceOvariectomyRatsSilicone ElastomersCapsulesDrug ImplantsEstradiolSilicone Elastomers

Identifiers

PMID22710371
PMCPMC3471296
OpenAlexW2063604641

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.