## Abstract In this study a technique which utilized a fluoresceinated lectin and a fluorescent supravital stain was compared with the conventional triple stain technique for evaluating the viability and acrosomal status of dog sperm. Ten semen samples obtained from 6 normal beagle dogs were evalua
A triple-stain technique for evaluating normal acrosome reactions of human sperm
✍ Scribed by Talbot, Prudence ;Chacon, Richard S.
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 572 KB
- Volume
- 215
- Category
- Article
- ISSN
- 0022-104X
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✦ Synopsis
Abstract
A triple‐stain technique has been developed to score normal acrosome‐reacted human sperm in fixed smears. Live and dead sperm are first differentiated using the vital stain trypan blue. Sperm are then fixed in glutar‐aldehyde, dried onto slides, and the postacrosomal region and acrosome are differentiated using Bismark brown and Rose Bengal. Slides are examined at 1,000 × with a bright‐field microscope and assessed for (1) the percentage of sperm that were alive at the time of fixation and (2) the percentage of sperm that had undergone normal acrosome reactions. Experiments are included that show that trypan blue is a reliable stain for dead sperm and that Rose Bengal stains only sperm having intact acrosomes. This technique may have applications in experimental and clinical studies on sperm capacitation, acrosome reactions, and fertilization in laboratory and domestic animals as well as in man.
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