Evidence map›Paper›PMID 26109179›Full record

ArticleReproductive biology and endocrinology : RB&E2015

Vitrification of human ovarian tissue: a practical and relevant alternative to slow freezing.

Sandra Sanfilippo, Michel Canis, Johan Smitz, Benoît Sion, Claude Darcha, Laurent Janny, Florence Brugnon

Open access · goldAbstract readComparative Study
In one paragraph

Article in Reproductive biology and endocrinology : RB&E, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 3 pooled it
7.9field-weighted citation impact, top 3% 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

26 citing papers in PubMed, 3 syntheses or guidelines pooled it, 61 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Fertility preservation strategies for cancerous women: An updated review.Turkish journal of obstetrics and gynecology · 2022
    Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Frontiers in endocrinology · 2019
    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 3 institutions in 2 countries.

Sandra SanfilippoCentre international de chirurgie endoscopique, Clermont-Ferrand, France. sanfilipposandra@gmail.com.
Michel CanisCentre international de chirurgie endoscopique, Clermont-Ferrand, France. mcanis@chu-clermontferrand.fr.
Johan SmitzFollicle biology laboratory, Vrije Universiteit Brussel, B - 1090, Jette, Belgium. Johan.Smitz@uzbrussel.be.
Benoît SionLaboratoire de physiologie, Université Clermont 1, UFR Pharmacie, Inserm U1107 NEURO-DOL, Clermont-Ferrand, France. benoit.sion@bbox.fr.
Claude DarchaCHU Clermont-Ferrand, CHU Gabriel Montpied, Anatomie et cytologie pathologiques, Centre de biologie, Clermont-Ferrand, France. cdarcha@chu-clermontferrand.fr.
Laurent JannyCHU Clermont-Ferrand, CHU Estaing, Pôle gynécologie obstétrique et reproduction humaine - Assistance médicale à la procréation - CECOS, Clermont-Ferrand, France. ljanny@chu-clermontferrand.fr.
Florence BrugnonCHU Clermont-Ferrand, CHU Estaing, Pôle gynécologie obstétrique et reproduction humaine - Assistance médicale à la procréation - CECOS, Clermont-Ferrand, France. fbrugnon@chu-clermontferrand.fr.
Centre Hospitalier Universitaire de Clermont-Ferrand · FRInserm · FRVrije Universiteit Brussel · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCryopreservation of ovarian tissue can be used to preserve the fertility of patients who are about to receive treatment(s) that could compromise their future ovarian function. Here we evaluate the effectiveness of a vitrification protocol by carrying out a systematic comparison with a conventional slow-freezing method on human ovarian tissue.

methodsHuman ovarian samples (mean age 28.0 ± 1.1 years) were processed in parallel for each cryopreservation procedure: vitrification and slow-freezing. Following warming/thawing, histological observations and a TUNEL assay in ovarian follicles were performed and compared to unfrozen control.

resultsBoth cryopreservation protocols gave comparable histological outcomes. Percentage of intact follicles was 83.6 % following vitrification in a 1.5 M 1,2-propanediol (PrOH), 1.5 M ethylene glycol (EG) and 0.5 M raffinose solution, 80.7 % after slow-freezing in 1.5 M PrOH and 0.025 M raffinose, and 99.6 % in fresh tissue. Follicle density was unchanged by vitrification (0.6 follicles/mm2) or slow-freezing (0.5 follicles/mm2) compared to fresh tissue (0.7 follicles/mm2). Percentage of follicles with DNA fragmentation was not statistically different in vitrified (20.8 %) or slow-frozen (31.3 %) tissues compared to the unfrozen control (35.0 %). There was no difference in proportion of stroma cells with DNA fragmentation in vitrified (6.4 %) and slow-frozen (3.7 %) tissues compared to unfrozen tissue (4.2 %).

conclusionsThis vitrification protocol enables good preservation of ovarian quality post-warming. The evaluation of endocrine function after vitrification need to be perform in a higher cohort to evaluate if this protocol may offer a relevant alternative to conventional slow-freezing for the cryopreservation of human ovarian tissue.

Indexed as

FreezingVitrificationAdultCryopreservationCryoprotective AgentsDNA FragmentationFemaleHumansOvarian FollicleOvaryPropylene GlycolCryoprotective AgentsPropylene Glycol

Identifiers

PMID26109179
PMCPMC4480989
OpenAlexW1817801888

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.