Evidence map›Paper›PMID 25537371›Full record

ArticleBiology of reproduction2015

Effect of vaginal or systemic estrogen on dynamics of collagen assembly in the rat vaginal wall.

T Ignacio Montoya, P Antonio Maldonado, Jesus F Acevedo, R Ann Word

Open access · greenAbstract read
In one paragraph

Article in Biology of reproduction, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
3.1field-weighted citation impact, top 9% 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

24 citing papers in PubMed, 74 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Observational
  8. Article
  9. Animal Models and Alternatives in Vaginal Research: a Comparative Review.Reproductive sciences (Thousand Oaks, Calif.) · 2021
    Review
  10. Vaginal Aging-What We Know and What We Do Not Know.International journal of environmental research and public health · 2021
    Review
  11. Article
  12. Article
  13. Collagen at the maternal-fetal interface in human pregnancy.International journal of biological sciences · 2020
    Review
  14. Review
  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

4 authors at 1 institution in 1 country.

T Ignacio MontoyaDepartment of Obstetrics and Gynecology, Division of Female Pelvic Medicine and Reconstructive Surgery, University of Texas Southwestern Medical Center, Dallas, Texas.
P Antonio MaldonadoDepartment of Obstetrics and Gynecology, Division of Female Pelvic Medicine and Reconstructive Surgery, University of Texas Southwestern Medical Center, Dallas, Texas.
Jesus F AcevedoDepartment of Obstetrics and Gynecology, Division of Female Pelvic Medicine and Reconstructive Surgery, University of Texas Southwestern Medical Center, Dallas, Texas.
R Ann WordDepartment of Obstetrics and Gynecology, Division of Female Pelvic Medicine and Reconstructive Surgery, University of Texas Southwestern Medical Center, Dallas, Texas ruth.word@UTSouthwestern.edu.
The University of Texas Southwestern Medical Center · US

Funding

Elastic Fiber Homeostasis in the Vaginal WallR01AG028048 · NIA · UT SOUTHWESTERN MEDICAL CENTER · PI WORD, RUTH A · 2007 to 2017
$3.2M
Protease regulation and integrity of connective tissues of the pelvic floorR01HD064824 · NICHD · UT SOUTHWESTERN MEDICAL CENTER · PI WORD, RUTH A · 2010 to 2014
$1.6M
NIA NIH HHS AG028048NIA NIH HHS R01 AG028048NICHD NIH HHS HD064824NICHD NIH HHS R01 HD064824
6 · The paper itself

Abstract

The objective of this study was to compare the effects of systemic and local estrogen treatment on collagen assembly and biomechanical properties of the vaginal wall. Ovariectomized nulliparous rats were treated with estradiol or conjugated equine estrogens (CEEs) either systemically, vaginal CEE, or vaginal placebo cream for 4 wk. Low-dose local CEE treatment resulted in increased vaginal epithelial thickness and significant vaginal growth without uterine hyperplasia. Furthermore, vaginal wall distensibility increased without compromise of maximal force at failure. Systemic estradiol resulted in modest increases in collagen type I with no change in collagen type III mRNA. Low-dose vaginal treatment, however, resulted in dramatic increases in both collagen subtypes whereas moderate and high dose local therapies were less effective. Consistent with the mRNA results, low-dose vaginal estrogen resulted in increased total and cross-linked collagen content. The inverse relationship between vaginal dose and collagen expression may be explained in part by progressive downregulation of estrogen receptor-alpha mRNA with increasing estrogen dose. We conclude that, in this menopausal rat model, local estrogen treatment increased total and cross-linked collagen content and markedly stimulated collagen mRNA expression in an inverse dose-effect relationship. High-dose vaginal estrogen resulted in downregulation of estrogen receptor-alpha and loss of estrogen-induced increases in vaginal collagen. These results may have important clinical implications regarding the use of local vaginal estrogen therapy and its role as an adjunctive treatment in women with loss of vaginal support.

Indexed as

Administration, IntravaginalAdministration, OralAnimalsBiomechanical PhenomenaCollagenEstradiolEstrogens, Conjugated (USP)FemaleRatsUterusVaginaVaginal Creams, Foams, and JelliesCollagenEstradiolEstrogens, Conjugated (USP)Vaginal Creams, Foams, and Jelliescollagenconjugated equine estrogenestradiollysyl oxidasepelvic organ prolapse

Identifiers

PMID25537371
PMCPMC4326728
OpenAlexW2103886876

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.