"This is a continuation of the previous project GA ER 505/95/0291 which has just been completed. The main facts derived from the previous project are: 1) Testosterone is essential for initiation of antler growth; 2) Period of main antler elongation may bemodulated behaviourally by IGF-1 levels; 3) The process of antler growth is sensitive to subtle changes in social hierarchy. The aims of the proposed, projects: 1) Determination of interactions between rank-related behaviour and hormonal influences durinthe period of antler growth. The specific question arises which hormones (and at which period of the antler tissue elongation) are responsible for behaviourally mediated changes in antlerogenesis. This will be investigated on intact red deer stags and castrated fallow deer bucks. 2) Elucidation of hormonal control of casting. In the previous project we did not find any satisfactory answer to question why high-ranked red deer stags cast their antlers earlier than low-ranked ones. Until now, the studies"@en . "1"^^ . . . . . . "Hormonal base of the relationship between social activity and antler growth II"@en . "0"^^ . "http://www.isvav.cz/projectDetail.do?rowId=GA524/00/0976"^^ . "Toto je navazuj\u00EDc\u00ED projekt na ukon\u010Den\u00FD projekt GA CR 505/95/0291. P\u0159edchoz\u00ED \u0159e\u0161en\u00ED uk\u00E1zalo, \u017Ee:1) P\u0159\u00EDtomnost testosteronu je nezbytn\u00E1 pro iniciaci r\u016Fstu paro\u017E\u00ED; 2) R\u016Fst paro\u017E\u00ED ve f\u00E1zi nejv\u011Bt\u0161\u00ED tvorby tk\u00E1n\u011B m\u016F\u017Ee b\u00FDt ovlivn\u011Bno behavior\u00E1ln\u011B prost\u0159ednictv\u00EDm hladin IGF 1; 3) Proces tvorby paro\u017E\u00ED je senzitivn\u00ED na nen\u00E1padn\u00E9 zm\u011Bny soci\u00E1ln\u00ED hierarchie. C\u00EDle navrhovan\u00E9ho projektu jsou:1) Determinace interakc\u00ED mezi chov\u00E1n\u00EDm odpov\u00EDdaj\u00EDc\u00EDmu soci\u00E1ln\u00EDmu postaven\u00ED a hormon\u00E1ln\u00EDm vliv\u016Fm v pr\u016Fb\u011Bhu r\u016Fstu paro\u017E\u00ED. Specifick\u00FDprobl\u00E9mem k \u0159e\u0161en\u00ED je, kter\u00E9 hormony (a v kter\u00E9 f\u00E1zi r\u016Fstu paro\u017E\u00ED) jsou zodpov\u011Bdn\u00E9 za behavior\u00E1ln\u011B ovlivn\u011Bn\u00E9 zm\u011Bny r\u016Fstu paro\u017E\u00ED. Tato ot\u00E1zka bude zkoum\u00E1na na intaktn\u00EDch samc\u00EDch jelena evropsk\u00E9ho a kastrovan\u00FDch samc\u00EDch da\u0148ka skvrnit\u00E9ho. 2) Objasn\u011Bn\u00ED hormon\u00E1ln\u00EDho \u0159\u00EDzen\u00ED shazov\u00E1n\u00ED paro\u017E\u00ED. V p\u0159edchoz\u00EDm projektu jsme nena\u0161li uspokojivou odpov\u011Bd' na ot\u00E1zku, pro\u010D soci\u00E1ln\u011B vysoko postaven\u00ED samci jelena evropsk\u00E9ho shazuj\u00ED paro\u017E\u00ED d\u0159\u00EDve, ne\u017E jeleni n\u00ED\u017Ee postaven\u00ED. A\u017E dosud se v\u0161echny snahy o objasn\u011Bn\u00ED tohoto" . . "Projekt p\u0159inesl nov\u00E9 poznatky v oblasti hormon\u00E1ln\u00EDho ovlivn\u011Bn\u00ED pr\u016Fb\u011Bhu r\u016Fstu paro\u017E\u00ED a kontroly shazov\u00E1n\u00ED paro\u017E\u00ED. Byla pops\u00E1na \u00FAloha androgen\u016F v iniciaci r\u016Fstu paro\u017E\u00ED, ale i ve zp\u011Btn\u00E9 vazb\u011B mezi chov\u00E1n\u00EDm, \u010Dasov\u00E1n\u00EDm paro\u017En\u00EDho cyklu a tvorbou paro\u017En\u00ED tk\u00E1n\u011B"@cs . "GA524/00/0976" . . . . . "2008-05-19+02:00"^^ . "11"^^ . . . "11"^^ . . . "Neuvedeno."@en . . "0"^^ . "Hormon\u00E1ln\u00ED podstata vztahu mezi soci\u00E1ln\u00ED aktivitou a r\u016Fstem paro\u017E\u00ED" . . .