D A Coviello, E Panucci, M M Mantero, C Perfumo, M Guelfi, C Borrone, F Dagna Bricarelli
{"title":"Maternal uniparental disomy for chromosome 14.","authors":"D A Coviello, E Panucci, M M Mantero, C Perfumo, M Guelfi, C Borrone, F Dagna Bricarelli","doi":"10.1017/s0001566000001264","DOIUrl":"https://doi.org/10.1017/s0001566000001264","url":null,"abstract":"<p><p>A girl carrying a de novo balanced 13-14 robertsonian translocation showed a clinical phenotype with severe hypotonia, hyperextensible joints, frontal bossing, asymmetric face, no mental retardation, severe scoliosis and motor delay. In situ hybridization analysis on chromosome spreads revealed the presence of the two centromeres in the rearranged chromosomes. Molecular analysis on genomic DNA showed the presence in the proposita of two chromosomes 14 of maternal origin and no chromosome 14 from the father indicating a maternal monocentric uniparental disomy for chromosome 14 (mUPD14). Our patient shows several similarities with other reported cases of mUPD14, suggesting imprinting of a region(s) of chromosome 14 and defining a possible mUPD14 Syndrome.</p>","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"45 1-2","pages":"169-72"},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s0001566000001264","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19838575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The assessment of the umbilical blood flow of the surviving twin after the intrauterine death of the other twin.","authors":"W Malinowski, W Dec, I Biskup","doi":"10.1017/s0001566000000982","DOIUrl":"https://doi.org/10.1017/s0001566000000982","url":null,"abstract":"<p><p>This paper summarizes our experience with Doppler velocimetry in survivors of intrauterine co-twin demise. In the first trimester, ten dichorionic deaths occurred; none of the survivors developed flow disorders. During the second trimester, there were three intrauterine demises, two of them were monochorionic and the survivors developed flow disorders: one presented transitory venous flow aberration, the other one an impaired development of diastolic flow. In the third trimester, two intrauterine deaths occurred. One case of twin to twin transfusion syndrome (TTTS) was complicated by the donor's death and the recipient showed a loss of diastolic flow. The second one happened during a dichorionic twin pregnancy. The survivor presented high systolic/diastolic daily ratio (S/D = 7.8).</p>","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"45 3","pages":"383-6"},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s0001566000000982","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19975481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Temperament development to 30 months of age in discordant twin pairs.","authors":"M L Riese","doi":"10.1017/s0001566000000830","DOIUrl":"https://doi.org/10.1017/s0001566000000830","url":null,"abstract":"<p><p>Twins within pairs often have different weights at birth. A difference of 15% or greater is defined as discordance for weight and is considered to place one or both infants at risk. Temperature differences had been found in the neonatal period for fullterm discordant cotwins, but not for preterm discordant cotwins, suggesting that continued gestation for discordant twins was a risk variable for early behavior. 30 pairs of fullterm and 17 pairs of preterm discordant pairs were followed at 6, 9, 12, 18, 24, and 30 months of age. Group differences were observed for the longitudinal maintenance of cotwin discordance in physical measures, with preterm cotwins becoming more like each other. In laboratory assessments, temperament differences no longer were observed between the larger and smaller cotwins. Questionnaires indicated that mothers generally did not differentiate between their larger and smaller cotwin children in temperament ratings, except for ratings of mood for the fullterm pairs. Thus, emotionality was the only temperament dimension that differentiated between the fullterm discordant twins both in the neonatal period and at later ages. In the main, it was concluded that the fullterm discordant twins overcame the adverse in-utero influences on early behavioral development.</p>","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"45 4","pages":"439-47"},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s0001566000000830","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20127463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M Cohen-Tannoudj, P Balducci, C Kress, V Richoux-Duranthon, J P Renard, C Babinet
{"title":"Genetic and molecular studies on Om, a locus controlling mouse preimplantation development.","authors":"M Cohen-Tannoudj, P Balducci, C Kress, V Richoux-Duranthon, J P Renard, C Babinet","doi":"10.1017/s0001566000001033","DOIUrl":"https://doi.org/10.1017/s0001566000001033","url":null,"abstract":"","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"45 1-2","pages":"3-14"},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s0001566000001033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19836863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M Krajewska-Walasek, A Gutkowska, M Mospinek-Krasnopolska, K Chrzanowska
{"title":"A new case of Beckwith-Wiedemann syndrome with an 11p15 duplication of paternal origin [46,XY,-21,+der(21), t(11;21)(p15.2;q22.3)pat].","authors":"M Krajewska-Walasek, A Gutkowska, M Mospinek-Krasnopolska, K Chrzanowska","doi":"10.1017/s0001566000001392","DOIUrl":"https://doi.org/10.1017/s0001566000001392","url":null,"abstract":"<p><p>We present a new case of 11p15 duplication (trisomy 11p15) in a boy (46,XY,-21,+der(21), t(11;21)(p15.2;q22.3)] suffering from Beckwith-Wiedemann syndrome (BWS), whose phenotypically normal father carries a balanced translocation between chromosomes 11 and 21[46,XY, t(11;21)(p15.2;q22.3)]. The paternal grandmother has the same balanced translocation and is also clinically normal. BWS was suspected when the boy was 6 months old because of gigantism, macroglossia, visceromegaly, ear lobe creases and abdominal distention. Apart from the characteristic BWS phenotype, the boy has other features which are almost exclusively observed in 11p trisomy (high forehead with frontal upsweep of hair, wide central nose bridge, slightly beaked nose, chubby cheeks and severe mental retardation). So far, at least eight cases of 11p15 duplication have been described as patients with BWS. In six of these, the duplication was due to inheritance of a translocated or rearranged paternal chromosome. This was also the case in our patient. In the two other previously published cases, the 11p15 duplications were de novo, but in one of these, DNA analysis has subsequently shown that the duplication was of paternal origin. We discuss our observations in relation to the above-mentioned previous cases of 11p15 duplication and the possible role of genomic imprinting in the etiology of BWS.</p>","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"45 1-2","pages":"245-50"},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s0001566000001392","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19837917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analysis of triplet repeats of the FRAXA locus using a novel sequencing procedure.","authors":"S Barlati, L Belletti, R Gardella, S Ferraboli","doi":"10.1017/s0001566000001471","DOIUrl":"https://doi.org/10.1017/s0001566000001471","url":null,"abstract":"","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"45 1-2","pages":"285-8"},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s0001566000001471","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19837923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Tuberous sclerosis: between genetic and physical analysis.","authors":"D J Halley","doi":"10.1017/s0001566000001112","DOIUrl":"https://doi.org/10.1017/s0001566000001112","url":null,"abstract":"<p><p>Tuberous sclerosis complex (TSC) is an autosomal dominant multisystem disorder with extensive clinical variability. Present estimates of the prevalence of TSC suggest that it may exceed 1:6,000. New mutations are frequent, as about 2/3 of all cases are apparently sporadic. Locus heterogeneity has been established, with one gene on chromosome 9q34 (TSC1) and the other on chromosome 16p13.3 (TSC2). The majority of TSC2 mutations are probably subtle alterations. In some cases, somatic and germline mosaicism might be explanations for intrafamilial phenotype variation and apparent non penetrance. A role of the predicted protein product tuberin in growth suppression would be in agreement with allelic losses observed in tumors of TSC patients. Studies on tuberin using antibodies raised against various parts of the protein can be expected to provide insight into its normal and impaired function.</p>","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"45 1-2","pages":"63-75"},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s0001566000001112","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19838563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A Argyriou-Tirita, K Romanakis, P Kroisel, O A Haas
{"title":"Asynchronous replication patterns of imprinted genes in triploid cells.","authors":"A Argyriou-Tirita, K Romanakis, P Kroisel, O A Haas","doi":"10.1017/s0001566000001318","DOIUrl":"https://doi.org/10.1017/s0001566000001318","url":null,"abstract":"","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"45 1-2","pages":"207-12"},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s0001566000001318","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19838580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}