Evidence map›Paper›PMID 33484287›Full record

SynthesisInternational urogynecology journal2021

Animal models for pelvic organ prolapse: systematic review.

Marina Gabriela M C Mori da Cunha, Katerina Mackova, Lucie Hajkova Hympanova, Maria Augusta T Bortolini, Jan Deprest

Open access · hybridAbstract readSystematic Review
In one paragraph

Synthesis in International urogynecology journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
3.7field-weighted citation impact, top 6% 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

21 citing papers in PubMed, 2 syntheses or guidelines pooled it, 30 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Chapter 4.5: New Proposed Treatments for Pelvic Organ Prolapse.International urogynecology journal · 2026
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Validation of an ovine vesicovaginal fistula model.International urogynecology journal · 2022
    Article
  18. Review
  19. 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

5 authors at 3 institutions in 3 countries.

Marina Gabriela M C Mori da CunhaCentre for Surgical Technologies, Group Biomedical Sciences, KU Leuven, Leuven, Belgium.ORCID http://orcid.org/0000-0001-6658-7797
Katerina MackovaCentre for Surgical Technologies, Group Biomedical Sciences, KU Leuven, Leuven, Belgium.ORCID http://orcid.org/0000-0002-6526-220X
Lucie Hajkova HympanovaInstitute for the Care of Mother and Child, Third Faculty of Medicine, Charles University, Prague, Czech Republic.
Maria Augusta T BortoliniDepartment of Gynecology, Sector of Urogynecology, Universidade Federal de São Paulo, São Paulo, SP, Brazil.ORCID http://orcid.org/0000-0002-2824-5320
Jan DeprestCentre for Surgical Technologies, Group Biomedical Sciences, KU Leuven, Leuven, Belgium. Jan.Deprest@uzleuven.be.ORCID http://orcid.org/0000-0002-4920-945X
Charles University · CZKU Leuven · BEUniversidade Federal de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introduction and hypothesisWe aimed to summarize the knowledge on the pathogenesis of pelvic organ prolapse (POP) generated in animal models.

methodsWe searched MEDLINE, Embase, Cochrane and the Web of Science to establish what animal models are used in the study of suggested risk factors for the development of POP, including pregnancy, labor, delivery, parity, aging and menopause. Lack of methodologic uniformity precluded meta-analysis; hence, results are presented as a narrative review.

resultsA total of 7426 studies were identified, of which 51 were included in the analysis. Pregnancy has a measurable and consistent effect across species. In rats, simulated vaginal delivery induces structural changes in the pelvic floor, without complete recovery of the vaginal muscular layer and its microvasculature, though it does not induce POP. In sheep, first vaginal delivery has a measurable effect on vaginal compliance; measured effects of additional deliveries are inconsistent. Squirrel monkeys can develop POP. Denervation of their levator ani muscle facilitates this process in animals that delivered vaginally. The models used do not develop spontaneous menopause, so it is induced by ovariectomy. Effects of menopause depend on the age at ovariectomy and the interval to measurement. In several species menopause is associated with an increase in collagen content in the longer term. In rodents there were no measurable effects of age apart of elastin changes. We found no usable data for other species.

conclusionIn several species there are measurable effects of pregnancy, delivery and iatrogenic menopause. Squirrel monkeys can develop spontaneous prolapse.

Indexed as

Pelvic Organ ProlapseAnimalsDelivery, ObstetricFemaleModels, AnimalParityPelvic FloorPregnancyRatsSheepAgeMenopauseOvariectomyParityPathophysiologyPregnancy

Identifiers

PMID33484287
PMCPMC8203535
OpenAlexW3122909152

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.