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Sperm selection techniques in cattle: Microfilter device versus conventional methods.

Jhorjhi Vega-Hidalgo1, Misael Rodriguez1, Deysi Dipaz-Berrocal1

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Summary
This summary is machine-generated.

Microfluidic devices improve sperm quality and reduce DNA damage compared to traditional methods. However, mini-Percoll gradients yielded better embryo development in in vitro fertilization (IVF).

Keywords:
blastocyst ratekinematicsmicrofilter devicesperm selection

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Area of Science:

  • Reproductive biology
  • Biomedical engineering
  • In vitro fertilization technologies

Background:

  • Sperm selection is crucial for in vitro fertilization (IVF) success.
  • Conventional methods like swim-up and density gradients (e.g., mini-Percoll) carry risks of sperm damage.
  • Microfluidic devices offer a potential alternative by mimicking the female reproductive tract.

Purpose of the Study:

  • To compare the efficacy of a microfluidic device against conventional sperm selection methods (swim-up, mini-Percoll) for IVF.
  • To evaluate the impact of different selection techniques on sperm parameters, DNA integrity, and subsequent embryo development.

Main Methods:

  • Sperm samples were processed using a microfluidic device, swim-up, or mini-Percoll gradient.
  • Sperm kinematic parameters, morphometry, vitality, and DNA damage were assessed pre- and post-selection.
  • Selected spermatozoa were used for IVF, with embryo assessment at cleavage and blastocyst stages.

Main Results:

  • Microfluidic device selection showed superior sperm kinematics compared to mini-Percoll and was similar to swim-up.
  • Sperm DNA damage was significantly reduced with the microfluidic device and swim-up method.
  • While microfluidics and mini-Percoll had higher sperm recovery rates than swim-up, the microfluidic device resulted in the lowest cleavage and blastocyst rates.

Conclusions:

  • Microfluidic devices and swim-up methods enhance sperm kinematic parameters and reduce DNA damage.
  • Mini-Percoll gradient remains the most efficient method for achieving optimal embryo production in IVF.
  • Further optimization of microfluidic devices is needed to improve embryo developmental potential.