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Related Experiment Videos

A microwell sperm penetration assay.

R A Bronson1, L Oula, S K Bronson

  • 1Department of Obstetrics and Gynecology, State University of New York, Stony Brook 11794-8091.

Fertility and Sterility
|November 1, 1992
PubMed
Summary

A modified sperm penetration assay (SPA) using microwells achieves comparable results to standard methods. This innovation enables accurate sperm function assessment with fewer sperm cells.

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Area of Science:

  • Reproductive biology
  • Andrology
  • Infertility research

Background:

  • The sperm penetration assay (SPA) is crucial for evaluating male fertility.
  • Standard SPA methods require significant sperm numbers, limiting their use in cases of severe oligozoospermia.

Purpose of the Study:

  • To evaluate the efficacy of a modified sperm penetration assay (SPA) utilizing microwells in tissue typing plates.
  • To determine if this modified technique can accurately assess sperm penetrating ability with reduced sperm counts.

Main Methods:

  • A modified SPA was developed using microwells within standard tissue typing plates.
  • Egg penetration rates were assessed using single zona-free hamster eggs.
  • The assay was performed with as few as 10,000 spermatozoa per sample.

Main Results:

  • Egg penetration rates in the modified SPA were comparable to those observed in the standard assay.
  • The modified technique demonstrated reliable assessment of sperm penetrating ability.

Conclusions:

  • The microwell-based modified SPA is a viable alternative to the standard assay.
  • This method conserves sperm, making it suitable for diagnosing male infertility even with low sperm concentrations.

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