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Related Experiment Video

Updated: May 25, 2025

U-Shaped Horizontal Swimming Technique for Preparing High-Quality Sperm with Low DNA Fragmentation Index

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Sperm Separation and Selection Techniques to Mitigate Sperm DNA Damage.

Steven Fleming^1,2, David Morroll², Martine Nijs²

¹Discipline of Anatomy & Histology, School of Medical Sciences, University of Sydney, Sydney, NSW 2000, Australia.

Life (Basel, Switzerland)

|February 26, 2025

Summary

Semen preparation techniques mimic natural sperm selection to improve fertilization outcomes. These methods enhance the chances of successful pregnancy by selecting sperm with intact DNA and normal genomes.

Keywords:

semen preparation sperm DNA fragmentation sperm selection sperm separation

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Area of Science:

Reproductive biology
Andrology
Assisted reproductive technology

Background:

Sperm preparation and selection are crucial for assisted reproduction.
Techniques aim to replicate in vivo sperm selection processes.
Sperm quality impacts fertilization, embryonic development, and pregnancy success.

Purpose of the Study:

To review and compare established and novel sperm preparation and selection techniques.
To discuss the clinical application of these sperm selection methods.
To highlight the importance of selecting high-quality spermatozoa for insemination.

Main Methods:

Exploiting sperm characteristics: motility, morphology, density, maturity, cell-surface charge, and hyaluronan receptor expression.
Mimicking the female reproductive tract's natural sperm selection process.
Comparative clinical review of sperm separation from seminal plasma and selection for insemination.

Main Results:

Various techniques effectively separate and select spermatozoa based on functional characteristics.
Selection aims to identify sperm with intact nuclear DNA and a normal genome.
Optimized sperm selection is linked to improved embryonic genome activation and blastocyst development.

Conclusions:

Sperm preparation and selection techniques are vital in modern reproductive medicine.
These methods enhance the likelihood of successful fertilization, implantation, and live birth.
Clinical application of these techniques supports improved reproductive outcomes.