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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Mathematische Annalen 169 (1967), S. 118-135 
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1076
    Keywords: Ataxia telangiectasia ; Radiosensitivity ; Immunodeficiency ; Flow cytometry ; Cell cycle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In a retrospective study, peripheral blood mononuclear cells from 13 patients with known ataxia telangiectasia (AT) (Louis Bar syndrome, McKusick #20890) were irradiated with different doses of X-rays prior to stimulation with phytohaemagglutinin. Mitogen response and cell cycle progression were assessed by two-parameter 5-bromo-2′-deoxyuridine/Hoechst — ethidium bromide flow cytometry. Compared to age-matched controls, AT cells show a severely defective mitogen response in both unirradiated and irradiated cells. Following irradiation with 1.5 Gy, AT cells exhibit significantly greater accumulations of cells in the G2 phase of the first cell cycle than controls. The ratio between the number of cells accumulated in the first cycle G2 phase and the growth fraction provides a clear distinction between AT and control cultures. In addition, two patients with microcephaly, normal intelligence, immunodeficiency, chromosomal instability and risk for lymphoreticular malignancies (Seemanová syndrome) and two patients with the Nijmegen breakage syndrome (both syndromes are listed as McKusick #25126) also exhibit very poor mitogen response and moderately increased G2 phase accumulations after X-irradiation. The simultaneous assessment of radiosensitivity and mitogen response in a single cell kinetic assay provides a speedy and accurate classification of cells of AT and AT-related syndromes.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1076
    Keywords: Williams-Beuren syndrome ; Elastin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To correlate presence or absence of a 7q11 microdeletion with the clinical picture of the Williams-Beuren syndrome (WBS), we investigated 29 patients with a clinical diagnosis of WBS or WBS-like features, aged 1–30 years, using molecular analysis and/or fluorescent in situ hybridization (FISH). Deletions at 7q11 were found in 75% of the patients (22 out of 29). Nine deletions occurred on a paternal, and ten on a maternal chromosome; three deletions were demonstrated by FISH only, and parental origin could thus not be determined. All deletion patients aged between 2 years and puberty displayed a distinct pattern of facial features (including periorbital fullness, short nose with flat bridge, wide mouth, and full lips and cheeks), the characteristic outgoing social behaviour, as well as moderate growth and mental retardation. Twothirds (15 out of 22) had a cardiovascular malformation, but only one third (7 of 22) had supravalvular aortic stenosis (SVAS). A stellate iris pattern was also present in one-third of the patients only. In the four adult patients with 7q11 deletions, there was prominence of the lower lip whereas fullness of cheeks and periorbital tissue was not seen. Conclusion This study confirms that WBS has a unique clinical picture which can be diagnosed clinically, but also shows that the relative frequency of individual features may have been overemphasized in the past, and that a minority of patients may exist who are clinically indistinguishable from WBS but who appear to have no deletion at 7q11.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 145 (1986), S. 539-544 
    ISSN: 1432-1076
    Keywords: Multiple congenital anomalies/mental retardation (MCA/MR) syndrome ; Velo-cardio-facial syndrome ; Shprintzen syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Eight patients (three sporadic, five from two families) with the velo-cardio-facial syndrome (VCFS) or Shprintzen syndrome are reported. Major clinical findings of this syndrome include a characteristic pattern of facial dysmorphisms, cleft palate, cardio-vascular malformations, and (mostly mild-to-moderate) mental retardation or learning difficulties. The syndrome probably is caused by a dominant gene with very variable expression. From previous reports mostly ascertained from cardio-vascular or cleft palate clinics, the incidence of cleft palate and heart defects was calculated to be 98% and 82%, respectively. Out of eight patients of this study who were diagnosed mainly through their pattern of facial dysmorphisms, only two and four had clefts and heart defects, respectively, further demonstrating the variability in the expression of this gene. Similarly, mental retardation, noted in 100% of previous publications, was not present in all of our patients. In two instances, examination of the mother revealed that she probably carried the mutant gene, but that she showed a milder clinical experession than the index patient. It is suggested that careful family investigations should be performed following detection of an index patient, and that the rate of fresh mutations might be not as high as previously assumed.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 155 (1996), S. 987-989 
    ISSN: 1432-1076
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1076
    Keywords: Key words Williams-Beuren ; syndrome ; Elastin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To correlate presence or absence of a 7q11 microdeletion with the clinical picture of the Williams-Beuren syndrome (WBS), we investigated 29 patients with a clinical diagnosis of WBS or WBS-like features, aged 1–30 years, using molecular analysis and/or fluorescent in situ hybridization (FISH). Deletions at 7q11 were found in 75% of the patients (22 out of 29). Nine deletions occurred on a paternal, and ten on a maternal chromosome; three deletions were demonstrated by FISH only, and parental origin could thus not be determined. All deletion patients aged between 2 years and puberty displayed a distinct pattern of facial features (including periorbital fullness, short nose with flat bridge, wide mouth, and full lips and cheeks), the characteristic outgoing social behaviour, as well as moderate growth and mental retardation. Two-thirds (15 out of 22) had a cardiovascular malformation, but only one third (7 of 22) had supravalvular aortic stenosis (SVAS). A stellate iris pattern was also present in one-third of the patients only. In the four adult patients with 7q11 deletions, there was prominence of the lower lip whereas fullness of cheeks and periorbital tissue was not seen. Conclusion This study confirms that WBS has a unique clinical picture which can be diagnosed clinically, but also shows that the relative frequency of individual features may have been overemphasized in the past, and that a minority of patients may exist who are clinically indistinguishable from WBS but who appear to have no deletion at 7q11.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 143 (1985), S. 269-275 
    ISSN: 1432-1076
    Keywords: Behavioural and developmental disturbances ; Prepubertal boys ; Fragile X syndrome (Martin-Bell syndrome)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Developmental and behavioural aspects were studied in 13 boys aged 2.6–12.5 years from three families with the fragile X syndrome. The following observations were made. (1) Moderate to severe retardation was present in all boys; non-verbal IQs ranged between 25 and 67 (mean 46±14); IQ and age were negatively correlated (P〈0.01). (2) Language development was grossly delayed in all boys: most had severe articulation problems. (3) Imitative and symbolic play (e.g. doll play) were strikingly retarded as compared to abstract play (e.g. block design). (4) Autistic features such as no use of eye contact, stereotyped movements and echolalia were found in 9/13 boys; the same number showed aggressive behaviour. (5) General activity was reduced during the 1st year of life; most boys became very hyperactive during the second year; and short attention span and increased distractability were observed in all. (6) Motor development was mildly delayed; all boys were clumsy and moderately hypotonic. The fragile X syndrome ought to be considered in retarded boys with a dissociated developmental pattern, in particular a striking delay in language and play development, and autistic features.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 141 (1984), S. 183-185 
    ISSN: 1432-1076
    Keywords: C syndrome ; Malformation, multiple congenital ; Trigonocephaly syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report two patients with Opitz trigonocephaly syndrome. Both children showed the pattern of abnormal findings characteristic of this syndrome, including trigonocephaly, upslanted palpebral fissures, inner epicanthic folds, broad alveolar ridges, small chin, short neck with loose skin, muscular hypotonia and cardiac defect. An 8-week-old girl had multiple gingival frenula, brachydactyly, syndactyly of toes and anal stenosis in addition, while a boy who died at 28 h from cardiac failure showed multiple joint contractures, cryptorchidism and renal cortical cysts.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 150 (1991), S. 486-488 
    ISSN: 1432-1076
    Keywords: Cardio-facio-cutaneous syndrome ; Multiple congenital anomalies/mental retardation syndrome ; Congenital heart disease ; Ectodermal abnormalities ; Sporadic occurrence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a 3-year-old girl with the cardiofacio-cutaneous (CFC) syndrome. She presented the typical combination of mild developmental delay, postnatal onset short stature with relative macrocephaly, a wide and prominent forehead with posteriorly rotated ears and down-slanting palpebral fissures, an atrial septal defect, and ectodermal abnormalities. All cases reported to date occurred sporadically. The actiology remains unknown; de novo mutations of an autosomal dominant gene seem the most likely explanation.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-1076
    Keywords: Key words Heterodisomy ; Isodisomy ; Maternal uniparental disomy 7 ; Mosaicism ; Silver-Russell syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Uniparental disomy (UPD) is defined as the inheritance of both homologous chromosomes from only one parent. So far, maternal UPD 7 has been described in 28 cases. Here, we report 4 new cases, present clinical information of 5 cases previously reported by us, and review the clinical and molecular findings of all 32 cases. We found a phenotype characterized by pre- and postnatal growth retardation, occipitofrontal head circumference in the lower normal range, a triangular face, and retarded bone maturation. Findings of the facial gestalt included a high and broad forehead and a pointed chin. A broad mouth with down-turned corners, prominent ears, café-au-lait spots, hemihypotrophy, or clinodactyly were rarely present. Psychomotor development was delayed in 6 cases. The clinical findings strikingly resemble the phenotype of the heterogeneous Silver-Russell syndrome (SRS). Other anomalies were less frequently found than in SRS. Molecular investigations revealed 11 cases with isodisomy and 17 cases with heterodisomy. In 4 cases this information was not available. From the allelic distribution of the microsatellites investigated, 9 cases might be the consequence of an error at maternal meiosis I, and 6 cases might be due to non-disjunction at maternal meiosis II. Three of the 17 heterodisomic cases had trisomy 7 in chorionic villi, in the remaining cases no prenatal diagnosis through chorionic villus sampling was reported. Conclusion Maternal UPD 7 should be investigated in children with pre- and postnatal growth retardation and a facial gestalt characterized by a high and broad forehead and a pointed chin, as well as in confined placental mosaicism for trisomy 7.
    Type of Medium: Electronic Resource
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