Evidence map›Paper›PMID 29555773›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2018

Live births from artificial insemination of microfluidic-sorted bovine spermatozoa characterized by trajectories correlated with fertility.

Maria Portia B Nagata, Kenji Endo, Kazuko Ogata, Kenichi Yamanaka, Junki Egashira, Naoto Katafuchi, Tadayuki Yamanouchi, Hideo Matsuda, Yuki Goto, Miki Sakatani and 6 more

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
9.7field-weighted citation impact, top 2% 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

34 citing papers in PubMed, 82 citations in OpenAlex.

  1. Review
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  6. Article
  7. Assessing Bovine Male Fertility in a Technological Age.Advances in anatomy, embryology, and cell biology · 2025
    Review
  8. Article
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  17. Article
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  19. Review
  20. The Future of IVF: The New Normal in Human Reproduction.Reproductive sciences (Thousand Oaks, Calif.) · 2022
    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

16 authors at 8 institutions in 1 country.

Maria Portia B NagataAdvanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tosu, Saga 841-0052, Japan.
Kenji EndoMorinaga Dairy Service Co. Ltd., Nasu, Tochigi 329-3224, Japan.
Kazuko OgataNational Livestock Breeding Center (NLBC), Nishigo, Fukushima 961-8511, Japan.
Kenichi YamanakaFaculty of Agriculture, Saga University, Saga 840-8502, Japan.
Junki EgashiraSaga Prefectural Livestock Experiment Station, Takeo, Saga 849-2305, Japan.
Naoto KatafuchiSaga Prefectural Livestock Experiment Station, Takeo, Saga 849-2305, Japan.
Tadayuki YamanouchiNational Livestock Breeding Center (NLBC), Nishigo, Fukushima 961-8511, Japan.
Hideo MatsudaNational Livestock Breeding Center (NLBC), Nishigo, Fukushima 961-8511, Japan.
Yuki GotoNational Livestock Breeding Center (NLBC), Nishigo, Fukushima 961-8511, Japan.
Miki SakataniKyushu-Okinawa Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Koshi, Kumamoto 861-1192, Japan.
Takuo HojoKyushu-Okinawa Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Koshi, Kumamoto 861-1192, Japan.
Hirofumi NishizonoLife Science Research Center, University of Toyama, Toyama 930-0194, Japan.
Kenji YotsushimaLivestock Research Institute, Toyama Prefectural Agricultural, Forestry & Fisheries Research Center, Toyama 939-2622, Japan.
Naoki TakenouchiKyushu-Okinawa Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Koshi, Kumamoto 861-1192, Japan.
Yutaka HashiyadaNational Livestock Breeding Center (NLBC), Nishigo, Fukushima 961-8511, Japan.
Kenichi YamashitaAdvanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tosu, Saga 841-0052, Japan; yamashita-kenichi@aist.go.jp.
National Livestock Breeding Center · JPNational Agriculture and Food Research Organization · JPNational Institute of Advanced Industrial Science and Technology · JPSaga Prefectural Education Center · JPKyushu Okinawa Agricultural Research Center · JPSaga University · JPToyama Prefectural Agricultural, Forestry & Fisheries Research Center · JPUniversity of Toyama · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Selection of functional spermatozoa plays a crucial role in assisted reproduction. Passage of spermatozoa through the female reproductive tract requires progressive motility to locate the oocyte. This preferential ability to reach the fertilization site confers fertility advantage to spermatozoa. Current routine sperm selection techniques are inadequate and fail to provide conclusive evidence on the sperm characteristics that may affect fertilization. We therefore developed a selection strategy for functional and progressively motile bovine spermatozoa with high DNA integrity based on the ability to cross laminar flow streamlines in a diffuser-type microfluidic sperm sorter (DMSS). The fluid dynamics, with respect to microchannel geometry and design, are relevant in the propulsion of spermatozoa and, consequently, ultrahigh-throughput sorting. Sorted spermatozoa were assessed for kinematic parameters, acrosome reaction, mitochondrial membrane potential, and DNA integrity. Kinematic and trajectory patterns were used to identify fertility-related subpopulations: the rapid, straighter, progressive, nonsinuous pattern (PN) and the transitional, sinuous pattern (TS). In contrast to the conventional notion that the fertilizing spermatozoon is always vigorously motile and more linear, our results demonstrate that sinuous patterns are associated with fertility and correspond to truly functional spermatozoa as supported by more live births produced from predominant TS than PN subpopulation in the inseminate. Our findings ascertain the true practical application significance of microfluidic sorting of functional sperm characterized by sinuous trajectories that can serve as a behavioral sperm phenotype marker for fertility potential. More broadly, we foresee the clinical application of this sorting technology to assisted reproduction in humans.

Indexed as

Insemination, ArtificialLive BirthAnimalsCattleCell SeparationFemaleFertilityFertilization in VitroMaleMicrofluidic Analytical TechniquesPregnancySpermatozoaSperm Motilityfertilitymicrofluidic sortingrheotaxisspermatozoatrajectory patterns

Identifiers

PMID29555773
PMCPMC5889641
OpenAlexW2800461429

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.