PMID- 9870099 OWN - NLM STAT- MEDLINE DCOM- 19990225 LR - 20161020 IS - 0884-6812 (Linking) VI - 20 IP - 6 DP - 1998 Dec TI - Characterization of cosmids and telomeres in cytogenetic preparations by 3D confocal fluorescence. PG - 477-82 AB - OBJECTIVE: To analyze, with fluorescent probes, by three-dimensional (3D) emission patterns, fluorescence in situ hybridization (FISH) preparations (cosmids, telomeres) and to perform factor analysis of medical image sequences (FAMIS); to use FISH to track relevant DNA sequences in cell nuclei during interphase and in mitotic chromosomes; and to use cytogenetic techniques, resulting in flat preparations of whole cells that are assumed to preserve probe access to their targets. STUDY DESIGN: The study design entailed labeling targets by probes (sequences labeled by fluorescein isothiocyanate) in nuclei and/or chromosomes stained by propidium iodide. Visualization of targets was improved when 3D sequences of images obtained on a single photomultiplier detector of the confocal microscope by z stepping were investigated by FAMIS. RESULTS: Factors and factor images showed that targets could be detected and differentiated in focal planes inside nuclei or chromosomes. CONCLUSION: It is possible to localize cosmids in cell nuclei at interphase and telomeres in mitotic chromosomes by means of 3D sequences of images. FAU - Kahn, E AU - Kahn E AD - Institut National de la Sante et de la Recherche Medicale U494, Centre Hospitalier Universitaire Pitie-Salpetriere, Paris. FAU - Philippe, C AU - Philippe C FAU - Frouin, F AU - Frouin F FAU - Di Paola, R AU - Di Paola R FAU - Bernheim, A AU - Bernheim A LA - eng PT - Journal Article PL - United States TA - Anal Quant Cytol Histol JT - Analytical and quantitative cytology and histology JID - 8506819 RN - 0 (Fluorescent Dyes) SB - IM MH - Cosmids/*ultrastructure MH - Factor Analysis, Statistical MH - Fluorescent Dyes MH - Humans MH - Image Processing, Computer-Assisted MH - In Situ Hybridization, Fluorescence MH - Interphase MH - Male MH - *Microscopy, Confocal MH - Mitosis MH - Telomere/*ultrastructure EDAT- 1998/12/31 00:00 MHDA- 1998/12/31 00:01 CRDT- 1998/12/31 00:00 PHST- 1998/12/31 00:00 [pubmed] PHST- 1998/12/31 00:01 [medline] PHST- 1998/12/31 00:00 [entrez] PST - ppublish SO - Anal Quant Cytol Histol. 1998 Dec;20(6):477-82.