PMID- 11494034 OWN - NLM STAT- MEDLINE DCOM- 20011004 LR - 20190605 IS - 1019-6439 (Print) IS - 1019-6439 (Linking) VI - 19 IP - 3 DP - 2001 Sep TI - Fluorescence in situ hybridization to assess transitional changes of aneuploidy for chromosomes 7, 8, 10, 12, 16, X and Y in metastatic prostate cancer following anti-androgen therapy. PG - 543-9 AB - There have been few detailed studies conducted on the cell population in relation to cytogenetic changes between the pre- and post-treatment periods in patients with prostate cancer. We investigated numerical chromosome changes associated with anti-androgen therapy, using fluorescence in situ hybridization (FISH). FISH using chromosome-specific centromeric probes was used to assess transitional changes in the frequency of aneuploidy for chromosomes 7, 8, 10, 12, 16, X, and Y in prostate cancer during the pre- and post-treatment periods. Gains of chromosomes 7, 8 and 12 were notable in the pre-treatment samples (8 out of 9 cases in chromosome 7; 8 out of 9 cases in chromosome 8; 7 out of 9 cases in chromosome 12), while a notable reduction in the number of cells with extra copies of these chromosomes was observed in post-treatment specimens. Other chromosomes did not show noticeable change in their FISH signals at each phase of clinical treatment in all 9 cases. Changes in cell number with high ploidies of chromosome 7, 8 and 12 reflect the clinical effects of anti-androgen therapy at the early phase, which might explain the androgen dependency of metastatic prostate cancer cells. FAU - Kasahara, K AU - Kasahara K AD - Department of Urology, Kochi Medical School, Nankoku, Kochi 783-8505, Japan. FAU - Taguchi, T AU - Taguchi T FAU - Yamasaki, I AU - Yamasaki I FAU - Karashima, T AU - Karashima T FAU - Kamada, M AU - Kamada M FAU - Yuri, K AU - Yuri K FAU - Shuin, T AU - Shuin T LA - eng PT - Case Reports PT - Journal Article PL - Greece TA - Int J Oncol JT - International journal of oncology JID - 9306042 RN - 0 (Androgen Antagonists) RN - EC 3.4.21.77 (Prostate-Specific Antigen) SB - IM MH - Adenocarcinoma/*drug therapy/genetics/secondary MH - Aged MH - Androgen Antagonists/*therapeutic use MH - *Aneuploidy MH - Bone Neoplasms/*drug therapy/genetics/secondary MH - Chromosome Aberrations/genetics MH - Chromosome Disorders MH - Chromosomes, Human/*genetics MH - Chromosomes, Human, 6-12 and X/genetics MH - Chromosomes, Human, Pair 16/genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Middle Aged MH - Prostate-Specific Antigen MH - Prostatic Hyperplasia/drug therapy/genetics/pathology MH - Prostatic Neoplasms/*drug therapy/genetics/pathology MH - Sex Chromosomes/*genetics MH - X Chromosome/genetics MH - Y Chromosome/genetics EDAT- 2001/08/09 10:00 MHDA- 2001/10/05 10:01 CRDT- 2001/08/09 10:00 PHST- 2001/08/09 10:00 [pubmed] PHST- 2001/10/05 10:01 [medline] PHST- 2001/08/09 10:00 [entrez] AID - 10.3892/ijo.19.3.543 [doi] PST - ppublish SO - Int J Oncol. 2001 Sep;19(3):543-9. doi: 10.3892/ijo.19.3.543.