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Genomewide scan for...
Genomewide scan for affective disorder susceptibility loci in families of a northern Swedish isolated population
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Venken, Tine (författare)
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Claes, Stephan (författare)
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Sluijs, Samuël (författare)
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Paterson, Andrew D (författare)
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van Duijn, Cornelia (författare)
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- Adolfsson, Rolf (författare)
- Umeå universitet,Psykiatri
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Del-Favero, Jurgen (författare)
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Van Broeckhoven, Christine (författare)
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(creator_code:org_t)
- Chicago : University of Chicago Press, 2005
- 2005
- Engelska.
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Ingår i: American Journal of Human Genetics. - Chicago : University of Chicago Press. - 0002-9297 .- 1537-6605. ; 76:2, s. 237-248
- Relaterad länk:
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http://www.cell.com/...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We analyzed nine multigenerational families with ascertained affective spectrum disorders in northern Sweden's geographically isolated population of Vasterbotten. This northern Swedish population, which originated from a limited number of early settlers similar to8,000 years ago, is genetically more homogeneous than outbred populations. In a genomewide linkage analysis, we identified three chromosomal loci with multipoint LOD scores (MPLOD) greater than or equal to2 at 9q31.1-q34.1 (MPLOD 3.24), 6q22.2-q24.2 (MPLOD 2.48), and 2q33-q36 (MPLOD 2.26) under a recessive affected-only model. Follow-up genotyping with application of a 2-cM density simple-tandem-repeat (STR) map confirmed linkage at 9q31.1-q34.1 (MPLOD 3.22), 6q23-q24 (MPLOD 3.25), and 2q33-q36 (MPLOD 2.2). In an initial analysis aimed at identification of the underlying susceptibility genes, we focused our attention on the 9q locus. We fine mapped this region at a 200-kb STR density, with the result of an MPLOD of 3.70. Genealogical studies showed that three families linked to chromosome 9q descended from common founder couples similar to10 generations ago. In this similar to10-generation pedigree, a common ancestral haplotype was inherited by the patients, which reduced the 9q candidate region to 1.6 Mb. Further, the shared haplotype was observed in 4.2% of patients with bipolar disorder with alternating episodes of depression and mania, but it was not observed in control individuals in a patient-control sample from the Vasterbotten isolate. These results suggest a susceptibility locus on 9q31-q33 for affective disorder in this common ancestral region.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Medicinsk genetik (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Medical Genetics (hsv//eng)
Nyckelord
- bipolar disorder
- linkage analysis
- wide scan
- complex traits
- schizophrenia
- pedigrees
- genetics
- screen
- recombination
- chromosome-19
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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