Evidence map›Paper›PMID 30655723›Full record

ArticleReproductive medicine and biology2019

Addition of granulosa cells collected from differential follicle stages supports development of oocytes derived from porcine early antral follicles.

Ai Ishiguro, Yasuhisa Munakata, Koumei Shirasuna, Takehito Kuwayama, Hisataka Iwata

Open access · goldAbstract read
In one paragraph

Article in Reproductive medicine and biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.7field-weighted citation impact, top 24% 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

2 citing papers in PubMed, 6 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

5 authors at 1 institution in 1 country.

Ai IshiguroDepartment of Animal Science Tokyo University of Agriculture Atsugi Japan.
Yasuhisa MunakataDepartment of Animal Science Tokyo University of Agriculture Atsugi Japan.
Koumei ShirasunaDepartment of Animal Science Tokyo University of Agriculture Atsugi Japan.
Takehito KuwayamaDepartment of Animal Science Tokyo University of Agriculture Atsugi Japan.
Hisataka IwataDepartment of Animal Science Tokyo University of Agriculture Atsugi Japan.ORCID 0000-0001-7238-8997
Tokyo University of Agriculture · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeImprovement of in vitro oocyte growth by addition of granulosa cells derived from differential developmental stages of follicles.

methodsGranulosa cells (GCs) collected from either early antral follicles (EAFs) or antral follicles (AFs) were added to oocyte-granulosa cell complexes (OGCs) derived from EAFs, and the in vitro growth of the oocytes was evaluated.

resultsGranulosa cells were incorporated into OGCs to form new OGCs within 2 days of culture. After 14 days of culture, the number of GCs surrounding oocytes was similar among the three OGCs conditions (unmanipulated "natural OGCs," "EAF-GCs add OGCs," and "AF-GCs add OGCs"), whereas the survival rate of the GCs and diameter of oocytes grown in vitro were the greatest for "AF-GCs added OGCs." After parthenogenetic activation, developmental rate till the blastocyst stage tended to be higher for "AF-GCs add OGCs" compared with other groups. Addition of AF-GCs significantly increased a hypoxic marker (pimonidazole staining) and increased the lipid content in oocytes grown in vitro compared with unmanipulated OGCs.

conclusionAddition of GCs derived from more advanced stages of follicles to the OGCs changes the metabolism of oocytes and is beneficial for in vitro growth of oocytes derived from EAFs.

Indexed as

early antral folliclesgranulosa cellsin vitro growthoocytepigs

Identifiers

PMID30655723
PMCPMC6332817
OpenAlexW2898500508

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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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.