PMID- 9286119 OWN - NLM STAT- MEDLINE DCOM- 19970930 LR - 20061115 IS - 0393-1978 (Print) IS - 0393-1978 (Linking) VI - 42 IP - 8 DP - 1997 Aug TI - Cytogenetic aspects of cell proliferation in atherosclerotic plaques. PG - 833-6 AB - Fluorescence in situ hybridization (FISH) using chromosome specific alpha-satellite DNA probes for chromosome 7, was performed on paraffin-embedded sections of 21 cases of human "unstable" atherosclerotic plaques, in order to determine whether trisomy 7, found by some Authors with conventional cytogenetics, is a biological characteristic of the atherosclerotic plaque. In 15 cases (71%) the FISH method showed smooth muscle cells with three or more spots. In particular the trisomy 7 was the most significant and constant result. The presence of an extra chromosome 7 is strictly correlated with an overexpression of the gene for chain A of the platelet-derived growth factor (PDGF), which was mapped at pter-7q22 region. Therefore trisomy 7 seems to correspond to an increase in PDGF synthesis and consequently to an increase in proliferative activity of smooth muscle cells. FAU - Matturri, L AU - Matturri L AD - Istituto di Anatomia e Istologia Patologica, Universita degli Studi, IRCCS Ospedale Maggiore, Milano. FAU - Cazzullo, A AU - Cazzullo A FAU - Turconi, P AU - Turconi P FAU - Lavezzi, A M AU - Lavezzi AM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Italy TA - Cardiologia JT - Cardiologia (Rome, Italy) JID - 8506637 SB - IM MH - Arteriosclerosis/*genetics/pathology MH - Cell Division MH - Chromosomes, Human, Pair 7 MH - Cytogenetics MH - Humans MH - *In Situ Hybridization, Fluorescence MH - Trisomy EDAT- 1997/08/01 00:00 MHDA- 1997/08/01 00:01 CRDT- 1997/08/01 00:00 PHST- 1997/08/01 00:00 [pubmed] PHST- 1997/08/01 00:01 [medline] PHST- 1997/08/01 00:00 [entrez] PST - ppublish SO - Cardiologia. 1997 Aug;42(8):833-6.