The Effectiveness of Sperm Preparation Using Density Mini-Gradient and Single-Layer Centrifugation for Oligospermia...

Area of Science:

• Reproductive Medicine
• Sperm Biology
• Assisted Reproductive Technologies

Background:

• Sperm preparation is crucial for assisted reproduction techniques like intrauterine insemination (IUI).
• Total motile sperm count is a key predictor of fertility in IUI patients.
• Different IUI methods have specific sperm quality requirements.

Purpose of the Study:

• To compare sperm recovery rate and DNA fragmentation index (DFI) using density mini-gradient and single-layer centrifugation for IUI.
• To evaluate the efficacy of different sperm preparation techniques in achieving optimal sperm parameters for IUI.

Main Methods:

• Thirty semen samples with low sperm concentration (<15 million cells/ml) were analyzed.
• Each sample was divided into three aliquots for mini-gradient, single 90-layer, and single 45-layer centrifugation.
• Sperm motility and recovery rates were assessed before and after each preparation method.

Main Results:

• The single 45-layer method resulted in significantly higher sperm concentration (p<0.05).
• While mini-gradient and single 90-layer methods showed higher sperm motility initially, the single 45-layer method achieved the highest recovered sperm motility rate (78.7% ± 12.4%).

Conclusions:

• All tested methods (mini-gradient, single 90-layer, single 45-layer) are applicable for sperm preparation in IUI.
• The choice of method should be based on initial sperm quality to maximize motility and DNA integrity for successful pregnancy rates.