Evidence map›Paper›PMID 27900401›Full record

ArticleInternational urogynecology journal2017

Vaginal wall weakness in parous ewes: a potential preclinical model of pelvic organ prolapse.

Natharnia Young, Anna Rosamilia, John Arkwright, Joseph Lee, Miranda Davies-Tuck, Joan Melendez, Jerome Werkmeister, Caroline E Gargett

Abstract read
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In one paragraph

Article in International urogynecology journal, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 15% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

  1. Animal models for pelvic organ prolapse: systematic review.International urogynecology journal · 2021
    Pooled it
  2. Chapter 4.5: New Proposed Treatments for Pelvic Organ Prolapse.International urogynecology journal · 2026
    Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Current practice in animal models for pelvic floor dysfunction.International urogynecology journal · 2023
    Review
  8. Review
  9. Article
  10. Review
  11. Endometrial SUSD2Journal of personalized medicine · 2021
    Review
  12. Article
  13. Review
  14. Review
  15. Review
  16. 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

8 authors at 4 institutions in 1 country.

Natharnia YoungThe Ritchie Centre, Hudson Institute of Medical Research, 27-31 Wright Street, Clayton, Victoria, Australia, 3168.
Anna RosamiliaThe Ritchie Centre, Hudson Institute of Medical Research, 27-31 Wright Street, Clayton, Victoria, Australia, 3168.
John ArkwrightComputer Science, Engineering, and Mathematics, Flinders University, Clovelly Park, South Australia, 5082, Australia.
Joseph LeeMonash Health, Pelvic Floor Clinic, 246 Clayton Road, Clayton, Victoria, 3168, Australia.
Miranda Davies-TuckThe Ritchie Centre, Hudson Institute of Medical Research, 27-31 Wright Street, Clayton, Victoria, Australia, 3168.
Joan MelendezMonash Health, Pelvic Floor Clinic, 246 Clayton Road, Clayton, Victoria, 3168, Australia.
Jerome WerkmeisterDepartment of Obstetrics and Gynecology, Monash University, 246 Clayton Road, Clayton, Victoria, Australia, 3168.
Caroline E GargettThe Ritchie Centre, Hudson Institute of Medical Research, 27-31 Wright Street, Clayton, Victoria, Australia, 3168. caroline.gargett@hudson.org.au.
Hudson Institute of Medical Research · AUMonash Health · AUFlinders University · AUMonash University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introduction and hypothesisEwes develop pelvic organ prolapse (POP) and may be a suitable model for preclinical studies evaluating cell-based therapies for POP. The aim of this study was to establish a clinical score of vaginal weakness and to compare POP Quantification System (POP-Q) values in conscious nulliparous and parous ewes and determine whether ewes are a suitable POP model.

methodsEwes (n = 114) were examined while conscious, without sedation, and standing in a V conveyer by adapting the human POP-Q measurement. Ovine POP was defined as descent to the introitus from POP-Q points Aa 3 cm above the introitus on the anterior wall, Ap 3 cm above the introitus on the posterior wall, or increased Ba anterior wall descent above the urethra (≥0). A test-retest showed good inter- and intrarater reliability.

resultsThere was no evidence of tissue mobility at Aa, Ap, Ba (all -3 cm) in nulliparous ewes (n = 14). In contrast, multiparous ewes had a median of -1 and interquartile range (IQR) (-2 to 0) for Aa, [0 (-1 to 0)] for Ap and [0 (-2.75 to 0)] for Ba (n = 33; P < 0.0001 in comparison with nulliparous) ewes. Ovine vaginal displacement was seen in 50.9 % of parous ewes and was strongly associated with parity (P = 0.003).

conclusionsA modified POP-Q in conscious ewes was established showing that the vaginal wall of parous animals has similar regions of weakness as do women and may be similarly related to parity. Ewes appear to be a representative preclinical model of human vaginal prolapse.

Indexed as

Disease Models, AnimalParitySeverity of Illness IndexSheepAnimalsFemalePelvic Organ ProlapseVaginaOvine modelPelvic organ prolapsePOP-QVagina

Identifiers

PMID27900401
OpenAlexW2558732621

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.