ProstateProstatic NeoplasmsProstatic HyperplasiaAndrogensReceptors, AndrogenProstate-Specific AntigenProstatic Intraepithelial NeoplasiaCell Line, TumorAdenocarcinomaGene Expression Regulation, NeoplasticTumor Cells, CulturedEpithelial CellsRNA, MessengerTumor Markers, BiologicalImmunohistochemistryReverse Transcriptase Polymerase Chain ReactionSignal TransductionDihydrotestosteroneOrchiectomyProstatectomyPygeumCell ProliferationNeoplasms, Hormone-DependentApoptosisAndrogen AntagonistsNuclear Receptor CoactivatorsMice, NudeBlotting, WesternTransurethral Resection of Prostate