Global Journal of Reproductive Medicine Juniper Publishers Abstract The cryopreservation procedure changes the integrity and functionality of sperm, affecting their longevity and the ability to fertilize the oocyte. Moreover, some of those changes could be alter the physiologic interactions between the sperm and the oviductal epithelial cells prior to fertilization, placing further limitations and challenges on frozen-thawed stallion sperm. For fertilization to occur, a sperm subpopulation should be survive in uterine environment and be transported to oviduct, the tubular epithelium that regulate the sperm capacitation process in tuning with the ovulation and later oocyte fecundation. Factors affecting sperm-oviduct interactions in equine and findings in other mammals suggest that this interaction is highly conserved. However, there are differences between species and this interaction may assist to explain the idiopathic infertility associated with t...
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