Sperm Selection Using Three Semen Processing Techniques.

Area of Science:

• Reproductive biology
• Spermatozoa processing
• Assisted reproductive technology

Background:

• Sperm selection is crucial for assisted reproductive technologies (ART).
• Evaluating the efficiency of different sperm preparation techniques is essential for optimizing ART outcomes.
• Migration-sedimentation (SS), swim-up from fresh semen (SF), and swim-up from washed sperm (SL) are common methods.

Purpose of the Study:

• To compare the efficiency of three sperm selection techniques: migration-sedimentation (SS), swim-up from fresh semen (SF), and swim-up from washed sperm (SL).
• To assess the recovery rates of motile spermatozoa with normal morphology using these methods.

Main Methods:

• Semen samples from 20 normozoospermic men were divided into three aliquots.
• Migration-sedimentation was performed using a Jondet tube.
• Swim-up techniques involved layering Human Tubal Fluid medium over fresh or washed sperm pellets.

Main Results:

• Migration-sedimentation (SS) yielded a significantly higher recovery rate (25%) compared to SF (10.1%) and SL (4.5%).
• Total motility was highest with SS (93.6%), followed by SF (91.2%), and SL (77%).
• Sperm morphology showed no significant difference between the techniques.

Conclusions:

• Migration-sedimentation (SS) is an efficient technique for recovering motile spermatozoa from native semen.
• SS demonstrated superior recovery rates compared to SF and SL techniques.
• The routine application of SS in assisted reproduction requires further investigation.