| 1. |
- Arnell, Henrik, et al.
(författare)
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The genetics of primary nocturnal enuresis: inheritance and suggestion of a second major gene on chromosome 12q
- 1997
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Ingår i: Journal of Medical Genetics. - : BMJ. - 0022-2593 .- 1468-6244. ; 34:5, s. 360-5
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Tidskriftsartikel (refereegranskat)abstract
- Primary nocturnal enuresis (PNE), or bedwetting at night, affects approximately 10% of 6 year old children. Genetic components contribute to the pathogenesis and recently one locus was assigned to chromosome 13q. We evaluated the genetic factors and the pattern of inheritance for PNE in 392 families. Dominant transmission was observed in 43% and an apparent recessive mode of inheritance was observed in 9% of the families. Among the 392 probands the ratio of males to females was 3:1 indicating sex linked or sex influenced factors. Linkage to candidate regions was tested in 16 larger families segregating for autosomal dominant PNE. A gene for PNE was excluded from chromosome 13q in 11 families, whereas linkage to the interval D13S263-D13S291 was suggested (Zmax = 2.1) in three families. Further linkage analyses excluded about 1/3 of the genome at a 10 cM resolution except the region around D12S80 on chromosome 12q that showed a positive two point lod score in six of the families (Zmax = 4.2). This locus remains suggestive because the material was not sufficiently large to give evidence for heterogeneity. Our pedigree analysis indicates that major genes are involved in a large proportion of PNE families and the linkage results suggest that such a gene is located on chromosome 12q.
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| 2. |
- Hedov, Gerth, et al.
(författare)
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First information and support provided to parents of children with Down syndrome in Sweden : clinical goals and parental experiences
- 2002
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Ingår i: Acta Paediatrica. - 0803-5253 .- 1651-2227. ; 91:12, s. 1344-1349
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Tidskriftsartikel (refereegranskat)abstract
- When parents are informed that their newborn child has Down syndrome (DS), they often respond with a traumatic crisis reaction. The aims of this study were to assess the clinical goals regarding the first information and support provided to parents of newborn children with DS at the Swedish paediatric departments, and to analyse the parents' experiences of how they were first informed and treated. Data were collected during 1992-1993 from all of the 51 departments of paediatrics in Sweden. Information on the parents' experiences, collected retrospectively in 1996, was based on recollection by 165 parents of 86 children with DS born between 1989 and 1993 at 10 of the paediatric departments considered representative for Sweden. Seventy-five percent of the families were informed about the diagnosis within 24 h post partum. Some parents felt they were informed too late, and a few parents that they were told too soon. Half of the parents were satisfied with the timing. About 70% of the parents considered the information insufficient and 60% felt that they had been unsupported. Seventy percent would have liked more frequent information. Parental criticisms concerning the way in which the information was provided were that they received too much negative information about DS and that both the communication skills and the basic knowledge of DS on the part of the professionals could have been better. CONCLUSION: The Swedish paediatric departments fall short of their reported strong clinical goals regarding the initial information in Sweden, and improvements in this area are desirable.
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| 3. |
- Hedov, Gerth, et al.
(författare)
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Sickness absence in Swedish parents of children with Down's syndrome : relation to self-perceived health, stress and sense of coherence
- 2006
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Ingår i: Journal of Intellectual Disability Research. - 0964-2633 .- 1365-2788. ; 50:7, s. 546-552
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: The aims of present study were to study sickness absence among Swedish parents of children with Down's syndrome (DS) and to compare their rates of absence with those of control parents. Sickness absence data for 165 DS parents were compared with those for 174 control parents; all data were for the period 1997-2000. Sickness absence rates were also related to parental self-perceived health, stress and sense of coherence. METHODS: The self-administrated measures of parental self-perceived health, stress and sense of coherence were compared with the number of days of sickness absence. RESULTS: In about two-thirds of the parents in both the study and the control group, no days of sickness absence were registered. Six of the DS parents had remarkably large numbers of days of sickness absence (more than 100 per year). None of the control parents had such high sickness absence rates. It is speculated that there is a small group (less than 5%) of parents who are more vulnerable to the birth of a child with DS. Apart from these six DS parents, sickness absence was not more frequent among the DS parents than among the control parents. DS parents stayed at home to care for their sick DS child three times more often than control parents did for their non-disabled child. DS fathers took greater responsibility in the care of their temporarily sick child and stayed at home to care for the child even more often than control mothers did. DS parents with sickness periods experienced small deterioration in self-perceived health, significantly higher stress and decreased sense of coherence in comparison with parents without sickness periods. CONCLUSIONS: There was a great similarity in sick leave rates due to one's own sickness between DS and control parents, but a small group of DS parents (<5%) may be more vulnerable. DS fathers stayed at home to care for their sick DS child remarkably often.
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| 4. |
- Hedov, Gerth, et al.
(författare)
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Swedish parents of children with Down's syndrome : parental stress and sense of coherence in relation to employment rate and time spent in child care
- 2002
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Ingår i: Scandinavian Journal of Caring Sciences. - 0283-9318 .- 1471-6712. ; 16:4, s. 424-430
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Tidskriftsartikel (refereegranskat)abstract
- Becoming parents of a child with Down's syndrome (DS) challenges the adjustment ability in parenthood. Individuals with higher sense of coherence (SOC) are supposed to manage stressors better than those with lower SOC. The aims of this study were to investigate parental self-perceived stress, SOC, frequency of gainful employment and amount of time spent on child care in Swedish DS parents (165 parents; 86 mothers, 79 fathers) and to compare those with control parents of healthy children (169 parents; 87 mothers, 82 fathers). The mean age of the children was 4.7 years. Parents responded to questionnaires separately including Hymovich's Parent Perception Inventory as stress measurement and Antonovsky's short version of the Orientation to Life. No differences concerning total employment rate were observed, but the DS mothers were more often employed part-time than control mothers. The DS parents did not spend more time on child care than the control parents and they did not differ in mean SOC score, but the DS parents perceived greater stress. The differences in stress, particularly between the DS and control mothers, were related to time-demanding areas. Parents with high SOC scores experienced significantly less self-perceived stress.
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| 5. |
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| 6. |
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| 7. |
- Tentler, Dmitry, et al.
(författare)
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A balanced reciprocal translocation t(5;7)(q14;q32) associated with autistic disorder: molecular analysis of the chromosome 7 breakpoint.
- 2001
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Ingår i: American Journal of Medical Genetics. - : Wiley. - 0148-7299 .- 1096-8628. ; 105:8, s. 729-736
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Tidskriftsartikel (refereegranskat)abstract
- Autism is a neuropsychiatric disorder characterized by impairments in social interaction, restricted and stereotypic pattern of interest with onset by 3 years of age. The results of genetic linkage studied for autistic disorder (AD) have suggested a susceptibility locus for the disease on the long arm of chromosome 7. We report a girl with AD and a balanced reciprocal translocation t(5;7)(q14;q32). The mother carries the translocation but do not express the disease. Fluorescent in situ hybridization (FISH) analysis with chromosome 7-specific YAC clones showed that the breakpoint coincides with the candidate region for AD. We identified a PAC clone that spans the translocation breakpoint and the breakpoint was mapped to a 2 kb region. Mutation screening of the genes SSBP and T2R3 located just centromeric to the breakpoint was performed in a set of 29 unrelated autistic sibling pairs who shared at least one chromosome 7 haplotype. We found no sequence variations, which predict amino acid alterations. Two single nucleotide polymorphisms were identified in the T2R3 gene, and associations between allele variants and AD in our population were not found. The methylation pattern of different chromosome 7 regions in the patient's genomic DNA appears normal. Here we report the clinical presentation of the patient with AD and the characterization of the genomic organization across the breakpoint at 7q32. The precise localization of the breakpoint on 7q32 may be relevant for further linkage studies and molecular analysis of AD in this region.
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| 8. |
- Wester, Ulrika, et al.
(författare)
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Chondrodysplasia punctata (CDP) with features of the tibia-metacarpal type and maternal phenytoin treatment during pregnancy
- 2002
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Ingår i: Prenatal Diagnosis. - : Wiley. - 0197-3851 .- 1097-0223. ; 22:8, s. 663-668
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Tidskriftsartikel (refereegranskat)abstract
- We describe a 2-year-old boy with chondrodysplasia punctata (CDP). The boy was exposed to phenytoin, in combination with carbamazepine, during pregnancy. There has been previous evidence for a connection between phenytoin exposure during pregnancy and chondrodysplasia punctata. The boy had clinical and some radiological characteristic features of CDP, of the tibia-metacarpal type. We know of no other report on a child exposed to phenytoin during pregnancy who developed CDP of this type.
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| 9. |
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| 10. |
- Allanson, Judith E., et al.
(författare)
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Cardio-Facio-Cutaneous Syndrome : Does Genotype Predict Phenotype?
- 2011
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Ingår i: American Journal of Medical Genetics, Part C: Seminars in Medical Genetics. - : Wiley. - 1552-4868. ; 157C:2, s. 129-135
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Tidskriftsartikel (refereegranskat)abstract
- Cardio-facio-cutaneous (CFC) syndrome is a sporadic multiple congenital anomalies/mental retardation condition principally caused by mutations in BRAF, MEK1, and MEK2. Mutations in KRAS and SHOC2 lead to a phenotype with overlapping features. In approximately 10-30% of individuals with a clinical diagnosis of CFC, a mutation in one of these causative genes is not found. Cardinal features of CFC include congenital heart defects, a characteristic facial appearance, and ectodermal abnormalities. Additional features include failure to thrive with severe feeding problems, moderate to severe intellectual disability and short stature with relative macrocephaly. First described in 1986, more than 100 affected individuals are reported. Following the discovery of the causative genes, more information has emerged on the breadth of clinical features. Little, however, has been published on genotype-phenotype correlations. This clinical study of 186 children and young adults with mutation-proven CFC syndrome is the largest reported to date. BRAF mutations are documented in 140 individuals (similar to 75%), while 46 (similar to 25%) have a mutation in MEK 1 or MEK 2. The age range is 6 months to 32 years, the oldest individual being a female from the original report [Reynolds et al. (1986); Am J Med Genet 25:413-427]. While some clinical data on 136 are in the literature, 50 are not previously published. We provide new details of the breadth of phenotype and discuss the frequency of particular features in each genotypic group. Pulmonary stenosis is the only anomaly that demonstrates a statistically significant genotype-phenotype correlation, being more common in individuals with a BRAF mutation.
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