Sperm quality after density gradient centrifugation with three commercially available media: a controlled trial

Area of Science:

• Reproductive Science
• Andrology
• Sperm Biology

Background:

• Density gradient centrifugation is a standard method for sperm preparation in assisted reproductive technology (ART).
• Limited comparative studies exist evaluating multiple sperm processing media under identical conditions.
• This study addresses the need for direct comparison of commonly used density gradient media.

Purpose of the Study:

• To evaluate and compare the efficacy of three commercially available density gradient media: PureCeption, ISolate, and SpermGrad-125.
• To assess their impact on key sperm quality parameters, including motility, total motile sperm (TMS), recovery rate, and DNA integrity.
• To provide data for optimizing sperm preparation protocols in ART.

Main Methods:

• Semen samples were collected from 20 healthy male volunteers.
• Sperm quality parameters (motility, TMS, recovery, DNA damage) were assessed before and after processing.
• Three density gradient media (PureCeption, ISolate, SpermGrad-125) were used for sperm separation under controlled conditions.

Main Results:

• Sperm motility was significantly higher with ISolate (81.4%) and SpermGrad-125 (85.7%) compared to PureCeption (62.5%).
• Total motile sperm (TMS) was higher in PureCeption (14.2%) and ISolate (15.8%) samples than in SpermGrad-125 (10.6%).
• Percent recovery was highest for PureCeption (45.3%) and ISolate (48.9%), while SpermGrad-125 yielded lower recovery (30.8%). DNA fragmentation was comparable across all media.

Conclusions:

• ISolate and SpermGrad-125 demonstrate superior sperm motility post-processing compared to PureCeption.
• While motility and recovery vary, DNA integrity is maintained similarly across the three density gradient media.
• The choice of density gradient medium can influence sperm quality outcomes in ART, with ISolate and SpermGrad-125 showing advantages in motility.