Evidence map›Paper›PMID 23597104›Full record

ArticleJournal of ovarian research2013

Developmental potential of human oocytes matured in vitro followed by vitrification and activation.

Patrick Imesch, David Scheiner, Min Xie, Daniel Fink, Erwin Macas, Raghvendra Dubey, Bruno Imthurn

Abstract read
In one paragraph

Article in Journal of ovarian research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
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

25 citing papers in PubMed.

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  19. Parthenogenesis and Human Assisted Reproduction.Stem cells international · 2016
    Review
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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.

Patrick ImeschDepartment of Gynecology, University Hospital Zurich, Frauenklinikstrasse 10, Zurich, CH-8091, Switzerland.
David ScheinerDepartment of Gynecology, University Hospital Zurich, Frauenklinikstrasse 10, Zurich, CH-8091, Switzerland.
Min XieDivision of Reproductive Endocrinology, University Hospital Zurich, Zurich, CH-8091, Switzerland.
Daniel FinkDepartment of Gynecology, University Hospital Zurich, Frauenklinikstrasse 10, Zurich, CH-8091, Switzerland.
Erwin MacasDivision of Reproductive Endocrinology, University Hospital Zurich, Zurich, CH-8091, Switzerland.
Raghvendra DubeyDivision of Reproductive Endocrinology, University Hospital Zurich, Zurich, CH-8091, Switzerland.
Bruno ImthurnDivision of Reproductive Endocrinology, University Hospital Zurich, Zurich, CH-8091, Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundOocyte in vitro maturation (IVM) and cryopreservation at the time of routine ovarian tissue freezing may be offered to cancer patients as an additional option for fertility preservation. This study aimed to investigate the developmental capacity of oocytes isolated from unstimulated ovaries.

methodsImmature oocytes (n = 63) from seven consenting premenopausal patients were analysed. Oocytes were collected during routine laparoscopic examination with biopsy of an ovary (cystic adnexal mass, n = 3; cervical adenocarcinoma, n = 2) or oophorectomy (sex reassignment surgery, n = 2) without previous stimulation of the ovaries. The stage of the patient's menstrual cycle was not considered. Oocytes in all visible antral follicles were aspirated from ovaries, cultured in IVM medium and vitrified at the MII stage before being kept in liquid nitrogen for at least one month. After warming, oocytes were subjected to parthenogenetic activation by chemical stimulus. Their further development was recorded at intervals of 24 hours for up to 6 days of culture.

results61.9% of oocytes matured in vitro within 48 hours. The survival rate after vitrification and warming was 61.5%. A total of 75% of surviving oocytes were able to respond to artificial activation, 44.4% of the parthenotes developed to early embryonic stage. However, only 1 in 18 (5.6%) of the resulting embryos reached blastocyst stage.

conclusionsOocytes matured in vitro from unstimulated ovaries seem to have limited developmental potential after cryopreservation and artificial activation. Although the outcome of IVM for non-stimulated oocytes is poor, it is currently the only chance besides cryopreservation of ovarian tissue for women for whom ovarian stimulation is not possible due to life circumstances. Based on our preliminary results, we suggest that the use of cryopreserved ovaries for fertility preservation in women with cancer warrants further investigation.

Indexed as

Fertility preservationIn vitro maturationOvarian tissueParthenogenesisVitrification

Identifiers

PMID23597104
PMCPMC3710234

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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.