The acrosome reaction
Regulating the acrosome reaction
... the acrosome reaction in order both to penetrate the egg zona pellucida and to fuse with the egg plasma ...the acrosome reaction functions as a behavioral switch, converting sperm into a state ...
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Egg jelly signal molecules for triggering the acrosome reaction in starfish spermatozoa
... Int J Ue BinI 38 167 174 (1994) 167 Special Review Egg jelly signal molecules for triggering the acrosome reaction in starfish spermatozoa MOTONORI HOSHI', TAKUYA NISHIGAKI, AKIRA USHIYAMA, TATSUYUKI[.] ...
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Characterization of Testicular Angiotensin Converting Enzyme before and after Semen Cryopreservation and in the Acrosome Reaction of Spermatozoids of Nelore Bulls
... the acrosome reaction in vitro using angiotensin II in the presence of ...the acrosome reaction via the AT1 receptor, which would explain the lower percentage of capacitated spermatozoa in the ...
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Dose-response effects of estrogenic mycotoxins (zearalenone, alpha- and beta-zearalenol) on motility, hyperactivation and the acrosome reaction of stallion sperm
... live acrosome-reacted sperm, zearalenone and 17beta-estradiol had no apparent effect on acrosome ...the acrosome reaction. Beta-zearalenol induced the acrosome reaction without ...
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The effect of pulsed 900 MHZ GSM mobile phone radiation on the. acrosome reaction, head morphometry and zona binding of human.
... the acrosome reaction, acrosomal status was assessed in RF exposed spermatozoa using flow cytometric ...the acrosome reaction after RF ...in acrosome reacted spermatozoa using the same ...
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Identification of the sperm motility initiating substance in the newt, Cynops pyrrhogaster, and its possible relationship with the acrosome reaction during internal fertilization
... and KAZUO ONITAKE 1 1 Department of Biology, Faculty of Science, Yamagata University, 2 Department of Medical Biology, Tokyo Metro- politan Institute of Medical Science, Bunkyo-ku, Tokyo and 3 Yamagata Junior College, ...
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Nitric oxide involvement in the acrosome reaction triggered by leptin in pig sperm
... addition, acrosome status of treated-spermatozoa was evaluated by FITC-PNA ...and acrosome reaction extent were detected in leptin-treated spermatozoa, but both the effects were reversed in presence ...
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Prostasome-like vesicles stimulate acrosome reaction of pig spermatozoa
... the acrosome reaction has been investigated by assessing the sperm acrosomal status by the PI/FITC-PNA (propidium iodide/fluorescein isothiocyanate-labeled peanut agglutinin) ...
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Regulation of the starfish sperm acrosome reaction by cGMP, pH, cAMP and Ca2+
... namely acrosome reaction-inducing substance (ARIS), Co-ARIS and asterosap, act in concert on homolo- gous spermatozoa to induce the acrosome reaction ...
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The Relationship between Acrosome Reaction and Polyunsaturated Fatty Acid Composition in Boar Sperm
... the acrosome reaction is an essential process for successful fertilization for the meeting of sperm and oocytes, however, if the acrosome reaction is induced at an inappropriate time, such as ...
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Acrosome reaction and chromatin integrity as additional parameters of semen analysis to predict fertilization and blastocyst rates
... the acrosome reaction (AR) and chromatin integrity to conventional semen analysis to individually predict the fertile potential of sperm ...CD46-FITC, Acrosome Response to an Ionophore Challenge ...
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Effect of acrosome reaction progress in frozen thawed boar spermatozoa on the efficiency of in vitro oocyte fertilization
... of acrosome reaction development in spermatozoa on the efficiency of oocyte fertilization has been studied in boars A, B and ...and acrosome integrity, and fertilizing ability of spermatozoa were ...
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Delineation of downstream signalling components during acrosome reaction mediated by heat solubilized human zona pellucida
... 25. Kirkman-Brown JC, Barratt CLR, Publicover SJ: Nifedipine reveals the existence of two discrete components of the progesterone-induced [Ca 2 + ] i transient in human spermatozoa. Dev Biol 2003, 259:71-82. 26. Patrat ...
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Absence of spermatozoal CD46 protein expression and associated rapid acrosome reaction rate in striped field mice (Apodemus agrarius)
... The authors declare that they have no competing interests. Authors' contributions LEC carried out the molecular genetic studies and drafted the manuscript. PA and KDH conducted the acrosome reaction rate ...
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Acrosome size and kinematics of human spermatozoa
... 1.2.3 Capacitation Freshly ejaculated spermatozoa are not immediately capable of fertilization possibly since after spermiation, decapacitation factors bind to the spermatozoa 28 . These factors may be of epididymal or ...
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Targeted and restricted complement activation on acrosome reacted spermatozoa
... The acrosome reaction is a large exocytosis event that is induced in vivo when spermatozoa bind to the zona pellucida of the egg (Figure ...This reaction releases enzymes that degrade the protein ...
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Sperm binding to the zona pellucida is not sufficient to induce acrosome exocytosis
... Boris Baibakov 1, *, Lyn Gauthier 1 , Prue Talbot 2 , Tracy L. Rankin 1 and Jurrien Dean 1 At fertilization, spermatozoa bind to the zona pellucida (ZP1, ZP2, ZP3) surrounding ovulated mouse eggs, undergo acrosome ...
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Effect of the Vitrification of Human Oocytes on the Binding Capacity and Acrosome Status of Human Sperm
... SUMMARY: To know the molecular aspects that occur in the process of human sperm binding to the human zona pellucida (ZP) is one of the great challenges of reproduction biology. Moreover knowing if the fertilization ...
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Relationship between acrosome integrity changes and in vitro fertilising ability of bovine spermatozoa
... the acrosome reaction, culture media for in vitro oocyte fertilisation are supple- mented with different agents, in cattle preferen- tially with heparin, which stimulates capacitation of bovine spermatozoa ...
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Role of tyrosine phosphorylation in sperm capacitation / acrosome reaction
... Conclusions Before fertilization can occur, spermatozoon undergoes a series of changes to acquire the ability to bind and pene- trate the oocyte. These events are regulated by the activa- tion of intracellular signaling ...
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