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Related Experiment Videos

Comparison of two-layer Percoll gradient and mini-Percoll methods for sperm preparation

S Kunathikom1, S Ko-Anantakul, K Techatraisak

  • 1Department of Obstetrics and Gynecology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand.

Journal of the Medical Association of Thailand = Chotmaihet Thangphaet
|September 16, 1998
PubMed
Summary

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Both two-layer Percoll gradient and mini-Percoll methods effectively prepare sperm. Mini-Percoll offers better motility and survival for normal samples, while two-layer Percoll provides higher recovery for specific abnormal semen parameters.

Area of Science:

  • Reproductive Medicine
  • Andrology
  • Sperm Preparation Techniques

Background:

  • Sperm preparation is crucial for assisted reproductive technologies.
  • Percoll gradients are widely used for sperm separation and purification.
  • Comparing different Percoll-based methods is essential for optimizing outcomes.

Purpose of the Study:

  • To compare the efficiency of two-layer Percoll gradient and mini-Percoll methods for sperm preparation.
  • To evaluate sperm recovery, motility, morphology, and survival rates using both techniques.

Main Methods:

  • Analysis of 50 normal and 33 abnormal semen samples.
  • Comparison of sperm parameters (recovery, motility, morphology, survival) after preparation with two-layer Percoll and mini-Percoll.
  • Statistical analysis to determine significant differences between methods and sample types.

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Main Results:

  • Both methods significantly improved sperm motility and normal morphology compared to original samples.
  • Two-layer Percoll yielded higher sperm recovery (p < 0.001).
  • Mini-Percoll showed higher motility (p > 0.001) and 24-hour survival (p < 0.05) in normal samples; specific advantages noted for teratozoospermia and asthenozoospermia.

Conclusions:

  • Both two-layer Percoll gradient and mini-Percoll are effective for sperm preparation.
  • Two-layer Percoll offers superior sperm recovery.
  • Mini-Percoll is advantageous for teratozoospermic samples and low-volume semen, particularly regarding motility and short-term survival.