Evidence map›Paper›PMID 29662372›Full record

ArticleReproductive medicine and biology2014

Effect of single-oocyte culture system on in vitro maturation and developmental competence in mice.

Manami Nishio, Yumi Hoshino, Kentaro Tanemura, Eimei Sato

Abstract read
In one paragraph

Article in Reproductive medicine and biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

4 citing papers in PubMed.

  1. 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

4 authors.

Manami NishioLaboratory of Animal Reproduction, Graduate School of Agricultural Science Tohoku University 981-8555 Sendai Japan.
Yumi HoshinoLaboratory of Animal Reproduction, Graduate School of Agricultural Science Tohoku University 981-8555 Sendai Japan.
Kentaro TanemuraLaboratory of Animal Reproduction, Graduate School of Agricultural Science Tohoku University 981-8555 Sendai Japan.
Eimei SatoLaboratory of Animal Reproduction, Graduate School of Agricultural Science Tohoku University 981-8555 Sendai Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: To investigate whether single-culture systems influence the quality of in vitro-matured oocytes, we examined the maturation and developmental competence of oocytes obtained by grouped in vitro maturation (IVM) or single IVM. Methods: In vitro-matured oocytes were obtained using the culture drop (CD) method for the grouped IVM experiments, and the CD and hanging drop (HD) method for the single IVM experiments. To evaluate oocyte developmental competence, we performed in vitro fertilization and culture, and counted the number of blastocysts. To evaluate the oocyte cytoplasmic maturation, we measured the maturation promoting factor (MPF) expression levels. Results: Oocytes cultured singly had lower maturity and developmental competence than the grouped IVM oocytes. However, enhanced oocyte fertility and blastocyst quality was achieved by the HD single IVM method. Additionally, the MPF activity level increased in all culture methods, compared to the control; however, it lagged behind nuclear maturation. Conclusions: These results suggest that the HD method is efficient for single IVM.

Indexed as

Hanging dropIn vitro maturationMouse oocyteOocyte qualitySingle culture

Identifiers

PMID29662372
PMCPMC5892990

What OpenQuestion holds

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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.