Evidence map›Paper›PMID 33488287›Full record

ArticleReproductive medicine and biology2021

Male advantage observed for in vitro fertilization mouse embryos exhibiting early cleavage.

Yosuke Kawase, Takanori Tachibe, Nobuo Kamada, Kou-Ichi Jishage, Hiroyuki Watanabe, Hiroshi Suzuki

Open access · goldAbstract read
In one paragraph

Article in Reproductive medicine and biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.9field-weighted citation impact, top 22% 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

6 citing papers in PubMed, 9 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

6 authors at 2 institutions in 2 countries.

Yosuke KawaseChugai Institute for Medical Science, Inc Gotemba Japan.
Takanori TachibeChugai Institute for Medical Science, Inc Gotemba Japan.
Nobuo KamadaChugai Institute for Medical Science, Inc Gotemba Japan.
Kou-Ichi JishageChugai Institute for Medical Science, Inc Gotemba Japan.
Hiroyuki WatanabeObihiro University of Agriculture and Veterinary Medicine Obihiro Japan.
Hiroshi SuzukiObihiro University of Agriculture and Veterinary Medicine Obihiro Japan.ORCID https://orcid.org/0000-0002-2638-0879
Chugai Pharma (United States) · USObihiro University of Agriculture and Veterinary Medicine · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeMouse embryos forming blastocoele early vs those forming late are predominantly male. We examined whether the male advantage could be recognized at an earlier stage of development.

methodsThe IVF embryos were classified into early, intermediate, and late development groups based on the time of the third cleavage, and the

resultsApproximately 90% of the early-developing embryos that exhibited third cleavage as early as 47 hours after insemination were male when analyzed using PCR at the blastocyst stage. PCR analysis showed that 61% of the intermediate-developing embryos (third cleavage occurring 48-50 hours after insemination) and 45% of late-developing embryos (third cleavage occurring at 51 hours or later postinsemination) were male. After embryo transfer, the early-developing embryos produced 80% males, while intermediate- and late-developing embryos produced 56% and 45% males, respectively.

conclusionsMale embryos tend to develop faster than female embryos during early stage of preimplantation in mice.

Indexed as

early cleavageembryomale advantagemicesex ratio

Identifiers

PMID33488287
PMCPMC7812486
OpenAlexW3095481536

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.