Evidence map›Paper›PMID 20552034›Full record

ArticlePloS one2010

The effect on intracytoplasmic sperm injection outcome of genotype, male germ cell stage and freeze-thawing in mice.

Narumi Ogonuki, Manami Mori, Akie Shinmen, Kimiko Inoue, Keiji Mochida, Akihiko Ohta, Atsuo Ogura

Abstract read
In one paragraph

Article in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing 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

19 citing papers in PubMed.

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  13. Biogenesis of sperm acrosome is regulated by pre-mRNA alternative splicing of Acrbp in the mouse.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  14. Article
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  17. Overview of new developments in and the future of cryopreservation in the laboratory mouse.Mammalian genome : official journal of the International Mammalian Genome Society · 2012
    Review
  18. Article
  19. Article
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

7 authors.

Narumi OgonukiRIKEN BioResouce Center, Tsukuba, Ibaraki, Japan.
Manami Mori
Akie Shinmen
Kimiko Inoue
Keiji Mochida
Akihiko Ohta
Atsuo Ogura

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIntracytoplasmic sperm injection (ICSI) has been widely used to study the mechanisms of mammalian fertilization and to rescue male-factor infertility in humans and animals. However, very few systematic analyses have been conducted to define factors affecting the efficiency of ICSI. In this study, we undertook a large-scale series of ICSI experiments in mice to define the factors that might affect outcomes. METHODOLOGY/PRINCIPAL

findingsWe used a 5 x 3 x 2 factorial design with the following factors: mouse genotype (ICR, C57BL/6, DBA/2, C3H/He, and 129/Sv strains), type of male germ cells (epididymal sperm, elongated or round spermatids), and their freeze-thawing treatment. The efficiencies (parameters) of each developmental step were analyzed by three-way ANOVA (significance level P<0.01). The type of male germ cells affected all the four parameters observed: oocyte survival after injection, cleavage of oocytes, implantation, and birth of offspring. Genotype affected the oocyte survival, cleavage and birth rates, whereas freeze-thawing had no effects on any of the parameters. There were significant genotype/cell type interactions for oocyte survival and cleavage, indicating that they were determined by a combination of strain and germ cell maturity. Multiple comparisons revealed that spermatozoa and elongated spermatids gave better implantation and birth rates than did round spermatids, while spermatozoa and elongated spermatozoa were indistinguishable in their ability to support embryonic development. The best overall efficiency (birth rate per oocytes injected) was obtained with frozen-thawed DBA/2 strain elongated spermatids (23.2+/-4.2%). CONCLUSIONS/SIGNIFICANCE: The present study provides the first comprehensive information on ICSI using the mouse as a model and will contribute to the efficient use of materials, time, and efforts in biomedical research and clinics involving ICSI.

Indexed as

Sperm Injections, IntracytoplasmicAnimalsFemaleFreezingGenotypeMaleMiceMice, Inbred Strains

Identifiers

PMID20552034
PMCPMC2884038

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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.