Evidence map›Paper›PMID 15526980›Full record

ArticleJournal of assisted reproduction and genetics2004

Comparison of maturation, fertilization, development, and gene expression of mouse oocytes grown in vitro and in vivo.

Dong-Hoon Kim, Duck-Sung Ko, Hoi-Chang Lee, Ho-Joon Lee, Won-Ii Park, S Samuel Kim, Jin-Ki Park, Byoung-Chul Yang, Soo-Bong Park, Won-Kyong Chang and 1 more

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Journal of assisted reproduction and genetics, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
0.3field-weighted citation impact, top 30% 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

16 citing papers in PubMed, 38 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

11 authors at 3 institutions in 1 country.

Dong-Hoon KimAnimal Biotechnology Division, National Livestock Research Institute, Suwon, Korea. kdh1010@rda.go.kr
Duck-Sung Ko
Hoi-Chang Lee
Ho-Joon Lee
Won-Ii Park
S Samuel Kim
Jin-Ki Park
Byoung-Chul Yang
Soo-Bong Park
Won-Kyong Chang
Hoon-Taek Lee
Eulji University · KRKonkuk University · KRNational Institute of Animal Science · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo investigate the difference of in vitro and in vivo grown oocytes, we compared maturation, fertilization, development, and maternal gene expression from both in vitro and in vivo grown mouse oocytes.

methodsThe preantral follicles isolated from 12-day-old mice were cultured on Transwell-COL membrane inserts. After culture, maturation, fertilization, and developmental rates were assessed. RT-PCR (reverse transcription-polymerase chain reaction) was performed to examine the expression of beta-actin, GDF-9, and IGF-II in matured oocytes.

resultsNo difference in the nuclear maturation was detected between in vitro and in vivo grown oocytes, but the mean oocyte diameter of the in vitro group was smaller than that of the in vivo group. The fertilization rate was significantly lower in the in vitro group than in the in vivo group (p < 0.05). The capacities of in vitro grown oocyte to cleave and develop to blastocysts were significantly lower than those of the in vivo grown oocytes (p < 0.001). Moreover, blastocyst of in vitro group had fewer total cells than those of in vivo group (p < 0.05). In regards to the expression of genes in mature oocytes, growth differentiation factor-9 (GDF-9) expression was similar between the two groups, but beta-actin was significantly reduced in the in vitro group compared to the in vivo group. Particularly, the expression of insulin-like growth factor II (IGF-II) was not found in the in vitro grown oocytes.

conclusionsThese results showed that in vitro grown oocytes did not have the same developmental capacity as in vivo grown oocytes. We assume that the aberrant expression of maternal-derived genes in the in vitro grown oocytes may cause the poor embryo viability.

Indexed as

Gene Expression RegulationActinsAnimalsCell DivisionCells, CulturedCellular SenescenceEmbryo TransferFemaleFertilizationInsulin-Like Growth Factor IIMaleMiceMice, Inbred ICROocytesOvarian FolliclePregnancyActinsInsulin-Like Growth Factor II

Identifiers

PMID15526980
PMCPMC3455184
OpenAlexW2023789688

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.