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- Darai-Ramqvist, Eva, et al.
(författare)
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Array-CGH and multipoint FISH to decode complex chromosomal rearrangements
- 2006
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Ingår i: BMC Genomics. - : Springer Science and Business Media LLC. - 1471-2164. ; 7, s. 330-
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Tidskriftsartikel (refereegranskat)abstract
- Background: Recently, several high-resolution methods of chromosome analysis have been developed. It is important to compare these methods and to select reliable combinations of techniques to analyze complex chromosomal rearrangements in tumours. In this study we have compared array-CGH (comparative genomic hybridization) and multipoint FISH (mpFISH) for their ability to characterize complex rearrangements on human chromosome 3 (chr3) in tumour cell lines. We have used 179 BAC/PAC clones covering chr3 with an approximately 1 Mb resolution to analyze nine carcinoma lines. Chr3 was chosen for analysis, because of its frequent rearrangements in human solid tumours. Results: The ploidy of the tumour cell lines ranged from near-diploid to near-pentaploid. Chr3 locus copy number was assessed by interphase and metaphase mpFISH. Totally 53 chr3 fragments were identified having copy numbers from 0 to 14. MpFISH results from the BAC/PAC clones and array-CGH gave mainly corresponding results. Each copy number change on the array profile could be related to a specific chromosome aberration detected by metaphase mpFISH. The analysis of the correlation between real copy number from mpFISH and the average normalized inter-locus fluorescence ratio (ANILFR) value detected by array-CGH demonstrated that copy number is a linear function of parameters that include the variable, ANILFR, and two constants, ploidy and background normalized fluorescence ratio. Conclusion: In most cases, the changes in copy number seen on array-CGH profiles reflected cumulative chromosome rearrangements. Most of them stemmed from unbalanced translocations. Although our chr3 BAC/PAC array could identify single copy number changes even in pentaploid cells, mpFISH provided a more accurate analysis in the dissection of complex karyotypes at high ploidy levels.
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| 2. |
- Gustafsson, Carina, et al.
(författare)
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Effects of Psychosocial Interventions for People With Intellectual Disabilities and Mental Health Problems : A Survey of Systematic Reviews
- 2009
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Ingår i: Research on social work practice. - : Sage Publications. - 1049-7315 .- 1552-7581. ; 19:3, s. 281-290
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Forskningsöversikt (refereegranskat)abstract
- The aim of this study is to provide a survey of systematic reviews that have evaluated the effects of psychosocial interventions for adult people with intellectual disabilities and/or an autistic syndrome with concurrent mental health problems. Reviews for inclusion were identified through searches of 10 electronic databases. The authors found that 3 out of 126 published reviews met the inclusion criteria for interventions, population, and being considered a systematic review. The results imply a weak scientific support for behavioral therapy, cognitive-behavioral therapy, and some forms of integrated care and support. However, the primary studies included in the reviews have several methodological shortcomings. The results suggest future research initiatives in the direction of more effectiveness studies of good quality and reproduction of high-quality systematic reviews.
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