Results 171 to 180 of about 134,084 (212)
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Factors Regulating Sperm Capacitation
Systems Biology in Reproductive Medicine, 2010Capacitation is broadly defined as the functional modifications rendering sperm competent to fertilize, encompassing the ability of the sperm to bind the zona pellucida and subsequently undergo the acrosome reaction, hyperactivated motility, and the capacity to fuse with the oocyte.
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Capacitation and the acrosome reaction in equine sperm
Animal Reproduction Science, 2001During sexual reproduction, the sperm and oocyte must fuse before the production of a diploid zygote can proceed. In mammals such as equids, fusion depends critically on complex changes in the plasma membrane of the sperm and, not surprisingly, this membrane differs markedly from that of somatic cells.
Gadella, B.M. +4 more
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Sperm capacitation in vitro in the eld's deer
Theriogenology, 2001Sperm capacitation was examined in the endangered Eld's deer (Cervus eldi thamin). Sperm motility and viability (percentage of sperm cells with intact membranes) were assessed in vitro over time after attempting to induce capacitation in TALP alone and TALP supplemented with calcium (10 mM CaCl2), dibutyryl cAMP (1 mM dbcAMP), or fetal calf serum (20 ...
V K, Harnal +5 more
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The role of mitochondrial proteins in sperm capacitation
Journal of Reproductive Immunology, 2009Spermatozoa deposited in the female reproductive tract need to undergo a multifaceted maturation process prior to fertilization termed "capacitation". This process is regulated by several proteins which are compartmentalized in discrete domains of the spermatozoon including the head, the mid-piece and the principal piece.
S, Shivaji +2 more
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Capacitation-Associated Glycocomponents of Mammalian Sperm
Reproductive Sciences, 2016Mammalian fertilization is a series of events that are mostly carbohydrate mediated. The male gamete glycocomponents are extensively synthesized and modified during sperm development and sperm transport in the reproductive tracts. Freshly ejaculated mammalian sperm are required to undergo capacitation, which takes place in the female reproductive ...
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[Advances in sperm capacitation].
Zhonghua nan ke xue = National journal of andrology, 2003Sperm must be capacitated before sperm-ovum fusion. Capacitation was once considered as hyperactivation. But now many investigators thought that capacitation wasn't equal to hyperactivation, and that sperm hyperactivation might be a moiety of capacitation or the result of capacitation.
Jin-Chun, Lu +3 more
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The role of small molecules in sperm capacitation
Theriogenology, 2008Mammalian spermatozoa released into an appropriate environment in vitro can capacitate but then may undergo spontaneous acrosome reactions. Since successful sperm interaction with the zona pellucida of an unfertilized oocyte requires an intact sperm plasma membrane, spontaneous acrosome loss is biologically undesirable because it renders spermatozoa ...
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Techniques to Determine Mammalian Sperm Capacitation
The detection of the achievement of the capacitation status in a sperm sample is a very important asset for optimizing most reproductive techniques centered on semen, from freezing to "in vitro" fertilization. However, there is not a single, simple test that can determine the precise capacitation of a sample.Joan E, RodrÃguez Gil +1 more
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Biochemistry of sperm capacitation
International Journal of Biochemistry, 1983openaire +2 more sources