Evidence map›Paper›PMID 33970370›Full record

ArticleJournal of assisted reproduction and genetics2021

Mural granulosa cells support to maintain the viability of growing porcine oocytes and its developmental competence after insemination.

Takayuki Yamochi, Shu Hashimoto, Yoshiharu Morimoto

Open access · greenAbstract read
In one paragraph

Article in Journal of assisted reproduction and genetics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.4field-weighted citation impact, top 19% 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

10 citing papers in PubMed, 11 citations in OpenAlex.

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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

3 authors at 2 institutions in 1 country.

Takayuki YamochiReproductive Science Laboratory, Graduate School of Medicine, Osaka City University, Osaka, 545-8585, Japan.
Shu HashimotoReproductive Science Laboratory, Graduate School of Medicine, Osaka City University, Osaka, 545-8585, Japan. hashimoto@ivfnamba.com.ORCID http://orcid.org/0000-0001-9083-1403
Yoshiharu MorimotoHORAC Grand Front Osaka Clinic, Osaka, 530-0011, Japan.ORCID https://orcid.org/0000-0003-2834-2726
Osaka City University · JPOsaka Nishi Clinic · JP

Funding

the Japan Society for the Promotion of Science 20K09674
6 · The paper itself

Abstract

purposeTo enhance the in vitro growth of porcine oocytes, we studied the effect of mural granulosa cells (MGCs) on the viability of oocytes attached to granulosa cells (oocyte-granulosa cell complexes, OGCs) that were obtained from early antral follicles. METHODS AND

resultsWhen OGCs were cultured with MGCs for 12 days, there were significant improvement (P < 0.05) in the robustness of gap junctional communication between the oocyte and the granulosa cells (82% vs. 59%), the survival rate of oocytes (57% vs. 39%), and the diameter of survived oocytes (118 μm vs. 112 μm). The rate of oocyte release of OGCs cultured with MGCs on the 12th day (1.9%) was significantly lower than that of OGCs cultured without MGCs (26%). Complete meiotic arrest was maintained in the group with MGCs (100%), while partial resumption of spontaneous meiosis was noticed in the absence of MGCs (10-19%). Furthermore, the presence of MGCs increased the oocyte maturation rate after maturation culture in both 12- and 14-day culture groups (P < 0.05, 85-88%) compared to OGCs cultured without MGCs (48-60%). MGCs also significantly improved the blastocyst formation rate (day 7) after ICSI (P < 0.05).

conclusionsThe data of this study thus shows that the presence of MGCs during in vitro oocyte growth plays a crucial role in supporting the developmental competence of growing porcine oocytes attached to the granulosa cells via enhancement of their viability.

Indexed as

Embryonic DevelopmentInseminationAnimalsCell Culture TechniquesCells, CulturedFemaleGranulosa CellsMaleOocytesOvarian FollicleSwineGap junctional communicationMural granulosa cellOocyte growth

Identifiers

PMID33970370
PMCPMC8581117
OpenAlexW3163571096

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.