PMID- 14710230 OWN - NLM STAT- MEDLINE DCOM- 20040224 LR - 20220309 IS - 0007-0920 (Print) IS - 1532-1827 (Electronic) IS - 0007-0920 (Linking) VI - 90 IP - 1 DP - 2004 Jan 12 TI - Impact of frequent Bcl-2 expression on better prognosis in renal cell carcinoma patients. PG - 200-5 AB - Previously, we reported that Bcl-2 was frequently expressed in renal cell carcinoma (RCC) specimens, but p53 mutation was a rare event. However, it was unclear whether Bcl-2 positivity was associated with the clinicopathological characteristics and prognosis in RCC. Therefore, we investigated the expression of Bcl-2 protein and its roles in 101 RCC specimens. In addition, the proliferation index (PI), apoptotic index (AI), caspase-3 and p53 expression were examined. The immunohistochemical method was applied for Bcl-2, caspase-3 and p53 protein expression. To investigate the proliferation activity and apoptosis of tumour cells, PI and AI were calculated based on Ki-67 and terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick-end labelling (TUNEL)-positive cells, respectively. Bcl-2 expression was detected in 72 out of 101 (71.3%) specimens. Bcl-2 positivity was inversely correlated with PI (P<0.0001) and AI (P=0.0074). Furthermore, Bcl-2 positivity was significantly correlated with better survival (P=0.0014), and was associated with lower stage (P=0.0301) and grade (P=0.0020). In RCC, frequent Bcl-2 expression was correlated with favourable character without higher PI and AI. Thus, Bcl-2 expression might be applied as a novel predictor of better prognosis in RCC patients. FAU - Itoi, T AU - Itoi T AD - Division of Molecular Oncology, Department of Signal Transduction Research, Graduate School of Medical and Dental Sciences, Niigata University, Asahimachi 1-757, Niigata 951-8510, Japan. FAU - Yamana, K AU - Yamana K FAU - Bilim, V AU - Bilim V FAU - Takahashi, K AU - Takahashi K FAU - Tomita, F AU - Tomita F LA - eng PT - Journal Article PL - England TA - Br J Cancer JT - British journal of cancer JID - 0370635 RN - 0 (Proto-Oncogene Proteins c-bcl-2) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Apoptosis MH - Carcinoma, Renal Cell/*genetics/*pathology MH - Cell Division MH - Female MH - *Gene Expression Regulation, Neoplastic MH - *Genes, bcl-2 MH - Humans MH - Immunohistochemistry MH - Kidney Neoplasms/*genetics/*pathology MH - Male MH - Middle Aged MH - Prognosis MH - Proto-Oncogene Proteins c-bcl-2/*biosynthesis MH - Survival Analysis PMC - PMC2395310 EDAT- 2004/01/08 05:00 MHDA- 2004/02/26 05:00 PMCR- 2005/01/06 CRDT- 2004/01/08 05:00 PHST- 2004/01/08 05:00 [pubmed] PHST- 2004/02/26 05:00 [medline] PHST- 2004/01/08 05:00 [entrez] PHST- 2005/01/06 00:00 [pmc-release] AID - 6601454 [pii] AID - 10.1038/sj.bjc.6601454 [doi] PST - ppublish SO - Br J Cancer. 2004 Jan 12;90(1):200-5. doi: 10.1038/sj.bjc.6601454.