PMID- 10419598 OWN - NLM STAT- MEDLINE DCOM- 20000302 LR - 20220409 IS - 0022-3417 (Print) IS - 0022-3417 (Linking) VI - 188 IP - 3 DP - 1999 Jul TI - Cyclin D1 expression in astrocytomas is associated with cell proliferation activity and patient prognosis. PG - 289-93 AB - An important positive regulator of the cell cycle, cyclin D1, is often amplified and overexpressed in malignancies. Cyclin D1 aberrations were analysed in grade II-IV astrocytomas by fluorescence in situ hybridization (FISH), mRNA in situ hybridization and immunohistochemistry. Proliferation activity was determined by Ki-67(MIB-1) immunolabelling and mitotic counting. High cyclin D1 expression was observed in grade IV astrocytomas (grades II-III versus grade IV; mRNA expression: p<0.001; immunoexpression: p=0.013), and correlated with poor patient survival (p<0.001, n=46). Upregulated cyclin D1 expression was also closely associated with poor patient prognosis in grade II-III astrocytomas (p<0.001, n=30). Cyclin D1 gene was not found to be amplified (n=7). Cell proliferation activity was significantly increased in tumours exhibiting high cyclin D1 mRNA levels (Ki-67(MIB-1): p<0.001; mitotic count: p<0.001) and high cyclin D1 protein expression (Ki-67(MIB-1): p=0.002; mitotic count: p=0.012). These results indicate that increased production of cyclin D1 is closely associated with high cell proliferation activity and aggressive behaviour in diffusely infiltrating astrocytomas. CI - Copyright 1999 John Wiley & Sons, Ltd. FAU - Sallinen, S L AU - Sallinen SL AD - Department of Pathology, Tampere University Hospital, Finland. losasa@uta.fi FAU - Sallinen, P K AU - Sallinen PK FAU - Kononen, J T AU - Kononen JT FAU - Syrjakoski, K M AU - Syrjakoski KM FAU - Nupponen, N N AU - Nupponen NN FAU - Rantala, I S AU - Rantala IS FAU - Helen, P T AU - Helen PT FAU - Helin, H J AU - Helin HJ FAU - Haapasalo, H K AU - Haapasalo HK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Pathol JT - The Journal of pathology JID - 0204634 RN - 0 (Biomarkers, Tumor) RN - 0 (Neoplasm Proteins) RN - 0 (RNA, Messenger) RN - 0 (RNA, Neoplasm) RN - 136601-57-5 (Cyclin D1) SB - IM MH - Astrocytoma/*metabolism/pathology MH - Biomarkers, Tumor/*metabolism MH - Cell Division MH - Cyclin D1/genetics/*metabolism MH - Follow-Up Studies MH - Gene Expression MH - Humans MH - Neoplasm Proteins/*metabolism MH - Prognosis MH - RNA, Messenger/genetics MH - RNA, Neoplasm/genetics MH - Survival Rate EDAT- 1999/07/27 10:00 MHDA- 2000/03/04 09:00 CRDT- 1999/07/27 10:00 PHST- 1999/07/27 10:00 [pubmed] PHST- 2000/03/04 09:00 [medline] PHST- 1999/07/27 10:00 [entrez] AID - 10.1002/(SICI)1096-9896(199907)188:3<289::AID-PATH351>3.0.CO;2-X [pii] AID - 10.1002/(SICI)1096-9896(199907)188:3<289::AID-PATH351>3.0.CO;2-X [doi] PST - ppublish SO - J Pathol. 1999 Jul;188(3):289-93. doi: 10.1002/(SICI)1096-9896(199907)188:3<289::AID-PATH351>3.0.CO;2-X.