Evidence mapPaperPMID 42439993Full record

ReviewVeterinary research communications2026

Advances in bovine oocyte in vitro maturation: mechanisms and strategies.

Mostafa Pournourali, Abolfazl Shirazi, Nahid Mizban, Sara Borjian-Boroujeni, Ali Sarvari, Hamideh Adeldust, Mohammadmehdi Barfar, Gaia Cecilia Luvoni

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In one paragraph

Review in Veterinary research communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

8 authors.

Mostafa PournouraliReproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran. m.pournourali@avicenna.ac.ir.ORCID http://orcid.org/0000-0002-7807-6588
Abolfazl ShiraziReproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran. a.shirazi@avicenna.ac.ir.ORCID http://orcid.org/0000-0003-3212-6137
Nahid MizbanReproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran.ORCID http://orcid.org/0000-0002-8051-652X
Sara Borjian-BoroujeniReproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran.ORCID http://orcid.org/0009-0007-7410-344X
Ali SarvariReproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran.ORCID http://orcid.org/0000-0002-0692-9780
Hamideh AdeldustReproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran.ORCID http://orcid.org/0000-0002-0105-6984
Mohammadmehdi BarfarNanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran.ORCID http://orcid.org/0009-0007-9096-2199
Gaia Cecilia LuvoniDipartimento Di Medicina Veterinaria E Scienze Animali, Università Degli Studi Di Milano, Milan, Italy. cecilia.luvoni@unimi.it.ORCID http://orcid.org/0000-0002-9598-9098

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In vitro maturation (IVM) of bovine oocytes remains a major limiting step in in vitro embryo production (IVP), largely because current culture systems fail to fully reproduce the dynamic biochemical and biophysical conditions of the follicular environment. Successful maturation requires precise coordination of nuclear and cytoplasmic events, supported by active communication between the oocyte and surrounding cumulus and granulosa cells. Intrinsic factors, including follicle size, metabolic status, mitochondrial function, and one-carbon metabolism (OCM), together with extrinsic elements such as hormonal cues, oxidative balance, and culture conditions, collectively determine oocyte competence. Among these, OCM plays a central role by regulating methyl donor availability, redox homeostasis, nucleotide synthesis, and epigenetic programming, thereby influencing early embryonic development. Recent advances aim to bridge the gap between in vivo and in vitro maturation. Strategies such as antioxidant supplementation, growth factor enrichment, and simulated physiological oocyte maturation (SPOM) have been reported to improve synchrony between nuclear and cytoplasmic maturation, although their effects remain variable across studies. Emerging technologies-including extracellular vesicle (EV) supplementation and microfluidic culture platforms-offer biomimetic environments that may enhance metabolic stability, restore physiological signaling, and improve embryo developmental potential. This review synthesizes current knowledge on the molecular and cellular mechanisms governing bovine oocyte maturation, critically evaluates intrinsic and extrinsic factors affecting IVM outcomes, and highlights innovative approaches that may increase oocyte competence and IVP efficiency. Overall, integrating omics-guided optimization, microfluidic systems, EV-based communication, and strengthened OCM pathways represents a promising yet still evolving direction for improving embryo yield and advancing sustainable cattle production.

Indexed as

In Vitro Oocyte Maturation TechniquesOocytesAnimalsCattleFemaleBovine oocyte maturationCumulus–oocyte complexEmbryo developmental competenceIn vitro maturation (IVM)Oocyte competence

Identifiers

PMID42439993

What Socratic 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 Socratic graph.