"Ciereszko, A." . . . . "Ka\u0161par, Vojt\u011Bch" . . "12610" . . "3" . "Metodika hodnocen\u00ED integrity akrozomu spermi\u00ED jeseter\u016F" . . "44" . "Methodology of acrosome integrity evaluation in sturgeon"@en . "Gamety jeseter\u016F se li\u0161\u00ED od gamet kostnat\u00FDch ryb p\u0159\u00EDtomnost\u00ED akrozomu s 8?10 posterolater\u00E1ln\u00EDmi v\u00FDb\u011B\u017Eky (PLPs) u spermie a v\u00EDce mikropyl\u00E1rn\u00EDmi otvory v jik\u0159e. Vy\u0161\u0161\u00ED po\u010Det mikropyl\u00ED m\u016F\u017Ee poskytnout spermii v\u00FDhodu snadn\u011Bj\u0161\u00EDho nalezen\u00ED vstupu do jikry, na druhou stranu zvy\u0161uje riziko polyspermatick\u00E9ho oplozen\u00ED, kter\u00E9 ovliv\u0148uje ploidii vznikl\u00E9ho embrya, anebo m\u016F\u017Ee b\u00FDt pro embryo i let\u00E1ln\u00ED. Akrozom\u00E1ln\u00ED reakce zahrnuje formov\u00E1n\u00ED fertiliza\u010Dn\u00EDho filamentu s funkc\u00ED jak\u00E9hosi ?kop\u00ED? vych\u00E1zej\u00EDc\u00ED ze 3 endonukle\u00E1rn\u00EDch kan\u00E1l\u016F a implanta\u010Dn\u00ED jamky (opa\u010Dn\u00E1 strana j\u00E1dra) skrz akrozom. Ten zrychluje proces prevence polyspermie. Dal\u0161\u00ED unik\u00E1tn\u00ED funkc\u00ED akrozomu bylo rozev\u00EDr\u00E1n\u00ED PLPs s funkc\u00ED kotvy proti uvoln\u011Bn\u00ED z mokropyle. Spermie s deaktivovan\u00FDm akrozomem nebyly schopn\u00E9 oplodnit jikry. Vzhledem k t\u011Bmto v\u00FDsledk\u016Fm, nazna\u010Duj\u00EDc\u00EDm nezbytnost akrozomu k oplozen\u00ED, bychom se m\u011Bli zam\u011B\u0159it na pr\u00E1ce hodnot\u00EDc\u00ED integritu akrozomu. Metodika hodnocen\u00ED integrity akrozomu spermi\u00ED jeseter\u016F je pops\u00E1na v t\u00E9to studii, pro ni\u017E byl n\u00E1strojem flu" . "5"^^ . "10"^^ . . . . "Acrosomal reaction; sturgeon; spermatozoa"@en . "Cosson, Jacky" . "P(GA524/06/0817), Z(MSM6007665809)" . "Bulletin" . "3"^^ . . "Metodika hodnocen\u00ED integrity akrozomu spermi\u00ED jeseter\u016F"@cs . . "Linhart, Otomar" . . "Methodology of acrosome integrity evaluation in sturgeon"@en . "P\u0161eni\u010Dka, Martin" . "[452307B22413]" . "Metodika hodnocen\u00ED integrity akrozomu spermi\u00ED jeseter\u016F" . "0007-389X" . . . "RIV/60076658:12610/08:00008931" . "CZ - \u010Cesk\u00E1 republika" . . . . "Gamety jeseter\u016F se li\u0161\u00ED od gamet kostnat\u00FDch ryb p\u0159\u00EDtomnost\u00ED akrozomu s 8?10 posterolater\u00E1ln\u00EDmi v\u00FDb\u011B\u017Eky (PLPs) u spermie a v\u00EDce mikropyl\u00E1rn\u00EDmi otvory v jik\u0159e. Vy\u0161\u0161\u00ED po\u010Det mikropyl\u00ED m\u016F\u017Ee poskytnout spermii v\u00FDhodu snadn\u011Bj\u0161\u00EDho nalezen\u00ED vstupu do jikry, na druhou stranu zvy\u0161uje riziko polyspermatick\u00E9ho oplozen\u00ED, kter\u00E9 ovliv\u0148uje ploidii vznikl\u00E9ho embrya, anebo m\u016F\u017Ee b\u00FDt pro embryo i let\u00E1ln\u00ED. Akrozom\u00E1ln\u00ED reakce zahrnuje formov\u00E1n\u00ED fertiliza\u010Dn\u00EDho filamentu s funkc\u00ED jak\u00E9hosi ?kop\u00ED? vych\u00E1zej\u00EDc\u00ED ze 3 endonukle\u00E1rn\u00EDch kan\u00E1l\u016F a implanta\u010Dn\u00ED jamky (opa\u010Dn\u00E1 strana j\u00E1dra) skrz akrozom. Ten zrychluje proces prevence polyspermie. Dal\u0161\u00ED unik\u00E1tn\u00ED funkc\u00ED akrozomu bylo rozev\u00EDr\u00E1n\u00ED PLPs s funkc\u00ED kotvy proti uvoln\u011Bn\u00ED z mokropyle. Spermie s deaktivovan\u00FDm akrozomem nebyly schopn\u00E9 oplodnit jikry. Vzhledem k t\u011Bmto v\u00FDsledk\u016Fm, nazna\u010Duj\u00EDc\u00EDm nezbytnost akrozomu k oplozen\u00ED, bychom se m\u011Bli zam\u011B\u0159it na pr\u00E1ce hodnot\u00EDc\u00ED integritu akrozomu. Metodika hodnocen\u00ED integrity akrozomu spermi\u00ED jeseter\u016F je pops\u00E1na v t\u00E9to studii, pro ni\u017E byl n\u00E1strojem flu"@cs . . "RIV/60076658:12610/08:00008931!RIV09-GA0-12610___" . "Gametes of sturgeon fishes differ from those of teleost fishes by the presence of acrosomes with 8?10 posterolateral projections (PLPs) in spermatozoa and multiple micropyles in eggs. Despite the multiplicity of micropyles may provide the spermatozoa with an advantage of easier entry finding into the egg, it increases the risk of polyspermy, which is lethal for the embryo or can affect its ploidy level. The acrosome reaction includes a formation of a spear-like fertilization filament, coming from 3 endonuclear canals and implantation fossa (opposite side of nucleus) through the acrosome, and which accelerates the process of polyspermy prevention. Another unique feature of the acrosome was an anchor-like opening of PLPs against release from the micropyle. In addition spermatozoa with artificially disrupted acrosome were not able to fertilize eggs. Inasmuch as this suggests an importance of acrosome for fertilization, work focusing on integrity of sturgeon spermatozoa acrosome should be done. In this st"@en . "Metodika hodnocen\u00ED integrity akrozomu spermi\u00ED jeseter\u016F"@cs . "378893" . .