Evidence map›Paper›PMID 33255250›Full record

ReviewAnimals : an open access journal from MDPI2020

Oocyte Selection for In Vitro Embryo Production in Bovine Species: Noninvasive Approaches for New Challenges of Oocyte Competence.

Luis Aguila, Favian Treulen, Jacinthe Therrien, Ricardo Felmer, Martha Valdivia, Lawrence C Smith

Abstract readReview
In one paragraph

Review in Animals : an open access journal from MDPI, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing 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

41 citing papers in PubMed.

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  14. Use of platelet lysate from estrus heifer forFrontiers in veterinary science · 2026
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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.

Luis AguilaCentre de Recherche en Reproduction et Fértilité (CRRF), Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada.ORCID 0000-0001-9713-4248
Favian TreulenSchool of Medical Technology, Faculty of Science, Universidad Mayor, Temuco 4801043, Chile.
Jacinthe TherrienCentre de Recherche en Reproduction et Fértilité (CRRF), Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada.
Ricardo FelmerLaboratory of Reproduction, Centre of Reproductive Biotechnology (CEBIOR-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4811322, Chile.
Martha ValdiviaLaboratory of Animal Reproductive Physiology, Biological Sciences Faculty, Universidad Nacional Mayor de San Marcos, Lima 15088, Peru.ORCID 0000-0002-8301-5536
Lawrence C SmithCentre de Recherche en Reproduction et Fértilité (CRRF), Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The efficiency of producing embryos using in vitro technologies in livestock species rarely exceeds the 30-40% threshold, indicating that the proportion of oocytes that fail to develop after in vitro fertilization and culture is considerably large. Considering that the intrinsic quality of the oocyte is one of the main factors affecting blastocyst yield, the precise identification of noninvasive cellular or molecular markers that predict oocyte competence is of major interest to research and practical applications. The aim of this review was to explore the current literature on different noninvasive markers associated with oocyte quality in the bovine model. Apart from some controversial findings, the presence of cycle-related structures in ovaries, a follicle size between 6 and 10 mm, large number of surrounding cumulus cells, slightly expanded investment without dark areas, large oocyte diameter (>120 microns), dark cytoplasm, and the presence of a round and smooth first polar body have been associated with better competence. In addition, the combination of oocyte and zygote selection via brilliant cresyl blue (BCB) test, spindle imaging, and the anti-Stokes Raman scattering microscopy together with studies decoding molecular cues in oocyte maturation have the potential to further optimize the identification of oocytes with better developmental competence for in-vitro-derived technologies in livestock species.

Indexed as

assisted reproductive technologyembryo developmentin vitro productionlivestock productionmicromanipulationoocyte competence

Identifiers

PMID33255250
PMCPMC7760727

What OpenQuestion holds

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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.