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Updated: Aug 10, 2026

Sperm Collection of Differential Quality Using Density Gradient Centrifugation
Published on: November 29, 2018
Male fertility markers, myth or reality
1Centre de Recherche en Biologie de la Reproduction and Département d'Obstétrique-Gynécologie, Faculté de Médecine, Université Laval, Que., Canada. robert.sullivan@crchul.ulaval.ca
Abstract:
For the past many years my laboratory has been interested in the function of the epididymis in sperm maturation which allows the male gamete to acquire its fertilizing ability. Our work has focused on proteins secreted by the epididymis and the mechanisms by which these proteins are added to the sperm surface. We have focused on sperm proteins involved in the binding to the egg's extra cellular coat-the zona pellucida. For this purpose, we have used different animal models as well as humans. We have proposed that some epididymal sperm proteins can be used as marker of male fertility in humans and animals.
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