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Sökning: WFRF:(LONNQVIST B)

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  • Marshall, Christian R., et al. (författare)
  • Contribution of copy number variants to schizophrenia from a genome-wide study of 41,321 subjects
  • 2017
  • Ingår i: Nature Genetics. - 1061-4036 .- 1546-1718. ; 49:1, s. 27-35
  • Tidskriftsartikel (refereegranskat)abstract
    • Copy number variants (CNVs) have been strongly implicated in the genetic etiology of schizophrenia (SCZ). However, genome-wide investigation of the contribution of CNV to risk has been hampered by limited sample sizes. We sought to address this obstacle by applying a centralized analysis pipeline to a SCZ cohort of 21,094 cases and 20,227 controls. A global enrichment of CNV burden was observed in cases (odds ratio (OR) = 1.11, P = 5.7 x 10(-15)), which persisted after excluding loci implicated in previous studies (OR = 1.07, P = 1.7 x 10(-6)). CNV burden was enriched for genes associated with synaptic function (OR = 1.68, P = 2.8 x 10(-11)) and neurobehavioral phenotypes in mouse (OR = 1.18, P = 7.3 x 10(-5)). Genome-wide significant evidence was obtained for eight loci, including 1q21.1, 2p16.3 (NRXN1), 3q29, 7q11.2, 15q13.3, distal 16p11.2, proximal 16p11.2 and 22q11.2. Suggestive support was found for eight additional candidate susceptibility and protective loci, which consisted predominantly of CNVs mediated by nonallelic homologous recombination.
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  • Ripke, Stephan, et al. (författare)
  • Biological insights from 108 schizophrenia-associated genetic loci
  • 2014
  • Ingår i: Nature. - 0028-0836 .- 1476-4687. ; 511:7510, s. 421-427
  • Tidskriftsartikel (refereegranskat)abstract
    • Schizophrenia is a highly heritable disorder. Genetic risk is conferred by a large number of alleles, including common alleles of small effect that might be detected by genome-wide association studies. Here we report a multi-stage schizophrenia genome-wide association study of up to 36,989 cases and 113,075 controls. We identify 128 independent associations spanning 108 conservatively defined loci that meet genome-wide significance, 83 of which have not been previously reported. Associations were enriched among genes expressed in brain, providing biological plausibility for the findings. Many findings have the potential to provide entirely new insights into aetiology, but associations at DRD2 and several genes involved in glutamatergic neurotransmission highlight molecules of known and potential therapeutic relevance to schizophrenia, and are consistent with leading pathophysiological hypotheses. Independent of genes expressed in brain, associations were enriched among genes expressed in tissues that have important roles in immunity, providing support for the speculated link between the immune system and schizophrenia.
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  • Hammarström, Viera, et al. (författare)
  • Serum immunoglobulin levels in relation to levels of specific antibodies in allogeneic and autologous bone marrow transplant recipients
  • 2000
  • Ingår i: Transplantation. - 0041-1337 .- 1534-6080. ; 69:8, s. 1582-1586
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: The aim of this study was to investigate the correlation of total levels of immunoglobulins to levels of specific antibodies after allogeneic and autologous bone marrow transplantation. Autologous transplant patients had normal levels of IgA and IgG antibodies already at 6 months after transplantation. In allogeneic transplanted patients without chronic graft versus host disease the immunological recovery was slower. The IgA and IgG levels were at the limit for deficiency at 6 months after transplantation. In allogeneic transplant patients with chronic chronic graft versus host disease the immunological recovery was delayed further. The total IgG levels were low at 12 months after transplantation and the IgG subclass pattern did not normalize until 24 months after transplantation. IgA levels remained low at 24 months after transplantation in all allogeneic transplanted patients with chronic chronic graft versus host disease. Protective levels of specific antibodies against tetanus and pneumococci decreased during the first year after transplantation regardless of the total immunoglobulin levels, regardless of the donors immunity. Pneumococcal antibodies decreased only in allogeneic transplanted patients, although autologous transplant patients retained pretransplant immunity against pneumococci. There was no difference in levels of specific antibodies between patients with and without chronic chronic graft versus host disease at 12 months after transplantation. There was no correlation between total immunoglobulin levels to levels of specific antibodies against tetanus and pneumococci after transplantation in our study. Taken together, normalized immunoglobulin levels do not predict normalization of levels of specific antibodies against tetanus and pneumococci after transplantation.
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