Compartmentalization of distinct cAMP signaling pathways in mammalian sperm. [PDF]
, 2013 Fertilization competence is acquired in the female tract in a process known as capacitation. Capacitation is needed for the activation of motility (e.g. hyperactivation) and to prepare the sperm for an exocytotic process known as acrosome reaction. While
Buck, Jochen +12 more
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Siriraj Medical Journal, 2003 The aim of this study was to compare thepercentages of sperm with an acrosome reaction between those with and without calcium ionophore A23187 induction after two-layer Percoll gradient separation.
Roungsin Choavaratana +3 more
doaj
Effect of Cissampelos capensis rhizome extract on human spermatozoa in vitro [PDF]
, 2014 Cissampelos capensis is commonly known by the Afrikaans name ‘dawidjies’ or ‘dawidjieswortel’. C. capensis is the most important and best-known medicinal plant of the family Menispermaceae used by the Khoisan and other rural people in the western regions
Erasmus, N. +3 more
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Voltage-dependent calcium influx in human sperm assessed by simultaneous optical detection of intracellular calcium and membrane potential [PDF]
, 1998 There are several physiological and pharmacological evidences indicating that opening of voltage dependent calcium channels play a crucial role in the induction of the acrosome reaction in mammalian sperm.
Bleil +32 more
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STUDIES ON THE ACROSOME. II. ACROSOME REACTION IN STARFISH SPERMATOZOA
The Biological Bulletin, 1954 1. When the spermatozoa of three starfish species, Asterina pectinifera, Asterias amurensis and Astropecten scoparius, are suspended in a dilute (0.1-1.0%) solution of egg albumin in sea water and mixed with homologous egg-water, three effects can be noted:a. many of the spermatozoa are agglutinated by their heads, forming permanent clusters;b.
JEAN C. DAN, A. KITAHARA, T. KOHRI
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Veterinární Medicína, 2010 A good functional status of cryopreserved boar spermatozoa is very important for successful fertilization of porcine oocytes and in vitro embryo production.
S. Martecikova +5 more
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Potassium ion influx and Na+,K+-ATPase activity are required for the hamster sperm acrosome reaction. [PDF]
, 1981 The role of a K+ ion influx and Na+,K+-ATPase activity in the hamster sperm acrosome reaction (AR) was examined, using a range of concentrations of K+,K+ ionophores and a Na+,K+-ATPase inhibitor.
Meizel, S, Mrsny, RJ
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Ca2+ ionophore A23187 can make mouse spermatozoa capable of fertilizing in vitro without activation of cAMP-dependent phosphorylation pathways [PDF]
, 2013 Ca2+ ionophore A23187 is known to induce the acrosome reaction of mammalian spermatozoa, but it also quickly immobilizes them. Although mouse spermatozoa were immobilized by this ionophore, they initiated vigorous motility (hyperactivation) soon after ...
Darszon, Alberto +6 more
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Role and regulation of EGFR in actin remodeling in sperm capacitation and the acrosome reaction.
Asian Journal of Andrology, 2011 To bind and fertilize the egg, the spermatozoon should undergo few biochemical and motility changes in the female reproductive tract collectively called capacitation.
H. Breitbart, Nir Etkovitz
semanticscholar +1 more source
Assembly of the Inner Perivitelline Layer, a Homo log of the Mammalian Zona Pellucida: An Immunohistochemical and Ultrastructural Study [PDF]
, 2012 The avian inner perivitelline layer (IPVL), a homologous structure to the mammalian zona pellucida, is deposited between the granulosa cells and the oocyte cell membrane during folliculogenesis. The glycoprotein meshwork of the IPVL forms a 3-dimensional
Bausek N. +37 more
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