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Articles linked to this work by shared authors, journal, and citation graph.

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Related Experiment Video

Updated: Feb 22, 2026

Modified MicroSecure Vitrification: A Safe, Simple and Highly Effective Cryopreservation Procedure for Human Blastocysts
09:35

Modified MicroSecure Vitrification: A Safe, Simple and Highly Effective Cryopreservation Procedure for Human Blastocysts

Published on: March 2, 2017

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New permeable cryoprotectant-free vitrification method for native human sperm.

J Aizpurua1,2, L Medrano1,2, M Enciso3

  • 1IVF-Spain, Av. Ansaldo 13, 03540, Alicante, Spain.

Human Reproduction (Oxford, England)
|September 24, 2017
PubMed
Summary
This summary is machine-generated.

Permeable cryoprotectant-free vitrification offers superior sperm preservation compared to slow freezing. This advanced method maintains higher sperm quality, vitality, and DNA integrity, making it a promising alternative for sperm cryopreservation.

Keywords:
cryopreservationmale fertilityslow freezingsperm qualityspermatozoatubulinvitrification

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Last Updated: Feb 22, 2026

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Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives
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Area of Science:

  • Reproductive Medicine
  • Cryobiology
  • Sperm Preservation

Background:

  • Slow freezing is the standard for sperm cryopreservation but negatively impacts sperm structure and function.
  • Vitrification is a promising alternative for other reproductive cells, yet its efficacy for sperm is less explored.

Purpose of the Study:

  • To evaluate a novel permeable cryoprotectant-free vitrification protocol for native sperm samples.
  • To compare the efficacy of this vitrification method against conventional slow freezing for sperm cryopreservation.

Main Methods:

  • 18 normozoospermic sperm samples were divided into three groups: fresh, slow-frozen, and vitrified.
  • Assessed sperm concentration, motility, morphology, vitality, DNA fragmentation, cytoskeleton integrity, and acrosome reaction.

Main Results:

  • Vitrification significantly improved sperm vitality and acrosome preservation compared to slow freezing.
  • DNA fragmentation was reduced by approximately one-third in vitrified samples versus slow-frozen samples.
  • Multivariate analysis indicated vitrified samples retained features closer to fresh samples than slow-frozen samples.

Conclusions:

  • Permeable cryoprotectant-free vitrification demonstrates superior sperm quality maintenance compared to traditional slow freezing.
  • This method shows potential as an effective alternative for sperm cryopreservation in assisted reproductive technology (ART) treatments.