Now showing items 1-10 of 69
In vitro sperm penetration through the zona pellucida of immature and in vitro matured oocytes using fresh, chilled and frozen canine semen
(ELSEVIER SCIENCE BV, 2009-01)
The aim of this study was to evaluate the effect of sperm cryopreservation and the maturation state of the oocyte on the time course of canine gamete interaction during co-culture for periods of 1–10 h. Semen samples were ...
A scanning electron microscopy study of frozen thawed dog sperm during In vitro gamete interaction
The aim of this work was to study the effects of cryopreservation on the binding and penetration of dog spermatozoa to the zona pellucida (ZP) by scanning electron microscopy (SEM). The sperm-rich fraction of six ejaculates ...
Timing of onset of contraceptive effectiveness in Depo-Provera users: Part I. Changes in cervical mucus
(Amer Soc Reproductive MedicineBirminghamEUA, 1998)
Video imaging of the sperm acrosome reaction during in vitro fertilization
(Landes Bioscience, 2011-07)
Mammalian spermatozoa become competent for fusion with oocytes while traveling through the female reproductive tract and the oocyte´s extracellular investments. Recent studies highlighted the molecular mechanism of the ...
Some aspects of stallion epididymal sperm maturation
It is clear at present that important maturation changes take place in spermatozoa in the epididymis, and that these changes confer on the sperm the ability to fertilize eggs. This process has been scarcely analyzed in the ...
Bicarbonate is required for migration of sperm epididymal protein DE/CRISP-1 to the equatorial segment and expression of rat sperm fusion ability
(Society for the Study of Reproduction, 2004-05)
Numerous studies have demonstrated that sperm capacitation is a bicarbonate-dependent process. In the rat, capacitation has not been studied as much as in other species, mainly because of the difficulties in carrying out ...
The galectin-1-glycan axis controls sperm fertilizing capacity by regulating sperm motility and membrane hyperpolarization
(Federation Amer Soc Exp Biol, 2015-07)
Lectin-glycan recognition systems play central roles in many physiologic and pathologic processes. Here, we identified a role for galectin-1 (Gal-1), a highly conserved glycan-binding protein, in the control of sperm ...
In vitro fertilization of the rock shrimp, Rhynchocinetes typus (Decapoda, Caridea): a review
(Sociedad de Biología de Chile, 2011)
Effect of capacitation of stallion sperm with polyvinylalcohol or bovine serum albumin on penetration of bovine zona-free or partially zona-removed equine oocytes
Experiments were conducted to study effects of macromolecules on stallion sperm capacitation and fertilization as determined by penetration of bovine zona-free and equine partially zona-removed oocytes. Stallion sperm were ...
Evidence that human epididymal protein ARP plays a role in gamete fusion through complementary sites on the surface of the human egg
(Society for the Study of Reproduction, 2001-05)
Human epididymal sperm protein ARP, a member of the cysteine-rich secretory proteins (CRISP) family, exhibits significant homology with rat epididymal protein DE, a candidate molecule for mediating sperm-egg fusion in ...