Combined supravital staining and hypoosmotic swelling test

Area of Science:

• Reproductive biology
• Andrology
• Sperm function testing

Background:

• Sperm viability assessment is crucial for male fertility evaluation.
• The hypoosmotic solution (VHOS) test assesses sperm membrane integrity.
• Predicting sperm penetration assay (SPA) outcomes is vital for assisted reproductive technologies (ART).

Purpose of the Study:

• To investigate the association between the VHOS parameter and SPA success.
• To evaluate the predictive value of VHOS for failed SPA.
• To determine if combining VHOS with the hypoosmotic sperm swelling (HOS) test enhances predictive accuracy.

Main Methods:

• Sperm samples were assessed using the VHOS test.
• The predictive performance of VHOS for SPA failure was analyzed.
• The combined diagnostic utility of VHOS and HOS tests was evaluated.
• Impact of sperm processing methods (centrifugation, swim-up) on membrane integrity was observed.

Main Results:

• VHOS correctly predicted 70.0-71.4% of failed SPA samples in short preincubation groups.
• Combining VHOS and HOS tests significantly reduced false negative results.
• Abnormal VHOS and HOS results generally correlated with negative SPA outcomes.
• Sperm processing methods differentially affected sperm membrane integrity.

Conclusions:

• VHOS is a valuable parameter for predicting SPA outcomes.
• Combined VHOS and HOS testing offers improved accuracy in ART candidate selection.
• Understanding sperm membrane integrity post-processing aids in optimizing ART preparation for individual patients.