PMID- 7720412 OWN - NLM STAT- MEDLINE DCOM- 19950523 LR - 20190830 IS - 0009-5915 (Print) IS - 0009-5915 (Linking) VI - 103 IP - 7 DP - 1994 Dec TI - Analysis of centromeric activity in Robertsonian translocations: implications for a functional acrocentric hierarchy. PG - 459-67 AB - Approximately 90% of human Robertsonian translocations occur between nonhomologous acrocentric chromosomes, producing dicentric elements which are stable in meiosis and mitosis, implying that one centromere is functionally inactivated or suppressed. To determine if this suppression is random, centromeric activity in 48 human dicentric Robertsonian translocations was assigned by assessment of the primary constrictions using dual color fluorescence in situ hybridization (FISH). Preferential activity/constriction of one centromere was observed in all except three different rearrangements. The activity is meiotically stable since intrafamilial consistency of a preferentially active centromere existed in members of six families. These results support evidence for nonrandom centromeric activity in humans and, more importantly, suggest a functional hierarchy in Robertsonian translocations with the chromosome 14 centromere most often active and the chromosome 15 centromere least often active. FAU - Sullivan, B A AU - Sullivan BA AD - Department of Genetics, Case Western Reserve University and University Hospitals, Cleveland, OH 44106. FAU - Wolff, D J AU - Wolff DJ FAU - Schwartz, S AU - Schwartz S LA - eng PT - Journal Article PL - Austria TA - Chromosoma JT - Chromosoma JID - 2985138R SB - IM MH - Amniocentesis MH - Cells, Cultured MH - Centromere/*metabolism/ultrastructure MH - Child MH - Chorionic Villi Sampling MH - Chromosome Aberrations/diagnosis/embryology/genetics MH - Chromosome Disorders MH - Chromosomes, Human/metabolism/*ultrastructure MH - Chromosomes, Human, Pair 14/metabolism/ultrastructure MH - Chromosomes, Human, Pair 15/metabolism/ultrastructure MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Lymphocytes/ultrastructure MH - Meiosis MH - Pregnancy MH - Single-Blind Method MH - *Translocation, Genetic EDAT- 1994/12/01 00:00 MHDA- 1994/12/01 00:01 CRDT- 1994/12/01 00:00 PHST- 1994/12/01 00:00 [pubmed] PHST- 1994/12/01 00:01 [medline] PHST- 1994/12/01 00:00 [entrez] AID - 10.1007/BF00337384 [doi] PST - ppublish SO - Chromosoma. 1994 Dec;103(7):459-67. doi: 10.1007/BF00337384.