PMID- 9137884 OWN - NLM STAT- MEDLINE DCOM- 19970612 LR - 20190816 IS - 0009-9163 (Print) IS - 0009-9163 (Linking) VI - 51 IP - 3 DP - 1997 Mar TI - Supernumerary marker chromosomes (SMCs) in Turner syndrome are mostly derived from the Y chromosome. PG - 184-90 AB - DNA and FISH (fluorescence in situ hybridization) analysis were carried out in 12 patients with stigmata of Turner syndrome to determine whether the Supernumerary Marker Chromosome (SMC) found cytogenetically in each of these patients was derived from the Y chromosome. The presence of a Y chromosome in these patients may predispose them to develop gonadoblastoma. PCR-Southern blot analysis, followed by FISH, was used to detect the presence of Y chromosome material. The Sex determining Region Y (SRY), Testis Specific Protein Y-encoded (TSPY) and Y-chromosome RNA Recognition Motif (YRRM) genes, which map at Yp11.31, Yp11.1-11.2 and Yp11.2/Yq11.21-11.23, respectively, were selected as markers, because they span the whole Y chromosome, and more importantly, they are considered to be involved in the development of gonadoblastoma. It was shown that in 12 patients, all of whom had an SMC, the SMC of 11 was derived from the Y chromosome. Furthermore, the presence of the SRY, TSPY and YRRM gene sequences was determined and FISH analysis confirmed the Y origin of the SMCs. The methodology described in this report is a rapid, reliable and sensitive approach which may be easily applied to determine the Y origin of an SMC carried in Turner syndrome. The identification of an SMC is important for the clinical management and prognostic counseling of these patients with Turner syndrome. FAU - Patsalis, P C AU - Patsalis PC AD - Department of Cytogenetics, Cyprus Institute of Neurology and Genetics, Nicosia, Cyprus. patsalis@mdrtc.cing.ac.cy FAU - Hadjimarcou, M I AU - Hadjimarcou MI FAU - Velissariou, V AU - Velissariou V FAU - Kitsiou-Tzeli, S AU - Kitsiou-Tzeli S FAU - Zera, C AU - Zera C FAU - Syrrou, M AU - Syrrou M FAU - Lyberatou, E AU - Lyberatou E FAU - Tsezou, A AU - Tsezou A FAU - Galla, A AU - Galla A FAU - Skordis, N AU - Skordis N LA - eng PT - Journal Article PL - Denmark TA - Clin Genet JT - Clinical genetics JID - 0253664 RN - 0 (Cell Cycle Proteins) RN - 0 (DNA Primers) RN - 0 (DNA-Binding Proteins) RN - 0 (Genetic Markers) RN - 0 (Nuclear Proteins) RN - 0 (RBMY1A1 protein, human) RN - 0 (RNA-Binding Proteins) RN - 0 (SRY protein, human) RN - 0 (Sex-Determining Region Y Protein) RN - 0 (TSPY1 protein, human) RN - 0 (Transcription Factors) SB - IM MH - Cell Cycle Proteins MH - DNA Primers MH - DNA-Binding Proteins/genetics MH - Female MH - Genetic Markers MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - *Nuclear Proteins MH - RNA-Binding Proteins/genetics MH - Sequence Analysis, DNA MH - Sex-Determining Region Y Protein MH - *Transcription Factors MH - Turner Syndrome/*genetics MH - Y Chromosome EDAT- 1997/03/01 00:00 MHDA- 1997/03/01 00:01 CRDT- 1997/03/01 00:00 PHST- 1997/03/01 00:00 [pubmed] PHST- 1997/03/01 00:01 [medline] PHST- 1997/03/01 00:00 [entrez] AID - 10.1111/j.1399-0004.1997.tb02450.x [doi] PST - ppublish SO - Clin Genet. 1997 Mar;51(3):184-90. doi: 10.1111/j.1399-0004.1997.tb02450.x.