PMID- 8559754 OWN - NLM STAT- MEDLINE DCOM- 19960227 LR - 20190905 IS - 0197-3851 (Print) IS - 0197-3851 (Linking) VI - 15 IP - 9 DP - 1995 Sep TI - Chromosome 18 analysis by fluorescence in situ hybridization (FISH) in human blastomeres of abnormal embryos after in vitro fertilization (IVF) attempt. PG - 835-41 AB - We performed fluorescence in situ hybridization (FISH) with a chromosome 18-specific probe on human abnormal cleaved embryos, fertilized either by two spermatozoa and exhibiting three pronuclei (3 PN) or normally fertilized and exhibiting two pronuclei (2 PN) with subsequent severe fragmentation and/or blocking. The aim of the study was to evaluate the incidence of chromosome 18 anomalies among these embryos in order to evaluate the FISH efficiency on such material and to obtain more precise and complete data than those obtained with classical cytogenetic analysis. For the 3 PN cleaved embryos, FISH confirmed the frequent regulation towards diploidy (25 per cent) and the high frequency of mosaics (53 per cent). For the 2 PN blocked or damaged embryos, FISH permitted chromosome evaluation, which was otherwise impossible with classical cytogenetic techniques: we also found a high mosaic frequency (45 per cent) with these embryos. If this frequency were the same for normally developing embryos, it would be a major obstacle to the reliability of either chromosomal or genetic preimplantation diagnosis. FAU - Bergere, M AU - Bergere M AD - IVF Laboratory, Hopital Antoine Beclere, Clamart, France. FAU - Selva, J AU - Selva J FAU - Baud, M AU - Baud M FAU - Volante, M AU - Volante M FAU - Martin, B AU - Martin B FAU - Hugues, J N AU - Hugues JN FAU - Olivennes, F AU - Olivennes F FAU - Frydman, R AU - Frydman R FAU - Auroux, M AU - Auroux M LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Prenat Diagn JT - Prenatal diagnosis JID - 8106540 RN - 0 (DNA Probes) SB - IM MH - *Blastomeres MH - *Chromosome Aberrations MH - *Chromosomes, Human, Pair 18 MH - DNA Probes MH - Embryo, Mammalian/*abnormalities MH - Female MH - Fertilization in Vitro MH - Humans MH - *In Situ Hybridization, Fluorescence MH - In Vitro Techniques MH - Mosaicism/genetics MH - Ploidies EDAT- 1995/09/01 00:00 MHDA- 1995/09/01 00:01 CRDT- 1995/09/01 00:00 PHST- 1995/09/01 00:00 [pubmed] PHST- 1995/09/01 00:01 [medline] PHST- 1995/09/01 00:00 [entrez] AID - 10.1002/pd.1970150908 [doi] PST - ppublish SO - Prenat Diagn. 1995 Sep;15(9):835-41. doi: 10.1002/pd.1970150908.