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Search: WFRF:(Bang C)

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  • 2017
  • swepub:Mat__t
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  • Ibanez, L., et al. (author)
  • Multi-ancestry GWAS reveals excitotoxicity associated with outcome after ischaemic stroke
  • 2022
  • In: Brain. - : Oxford University Press (OUP). - 0006-8950 .- 1460-2156. ; 145:7, s. 2394-2406
  • Journal article (peer-reviewed)abstract
    • During the first hours after stroke onset, neurological deficits can be highly unstable: some patients rapidly improve, while others deteriorate. This early neurological instability has a major impact on long-term outcome. Here, we aimed to determine the genetic architecture of early neurological instability measured by the difference between the National Institutes of Health Stroke Scale (NIHSS) within 6 h of stroke onset and NIHSS at 24 h. A total of 5876 individuals from seven countries (Spain, Finland, Poland, USA, Costa Rica, Mexico and Korea) were studied using a multi-ancestry meta-analyses. We found that 8.7% of NIHSS at 24 h of variance was explained by common genetic variations, and also that early neurological instability has a different genetic architecture from that of stroke risk. Eight loci (1p21.1, 1q42.2, 2p25.1, 2q31.2, 2q33.3, 5q33.2, 7p21.2 and 13q31.1) were genome-wide significant and explained 1.8% of the variability suggesting that additional variants influence early change in neurological deficits. We used functional genomics and bioinformatic annotation to identify the genes driving the association from each locus. Expression quantitative trait loci mapping and summary data-based Mendelian randomization indicate that ADAM23 (log Bayes factor = 5.41) was driving the association for 2q33.3. Gene-based analyses suggested that GRIA1 (log Bayes factor = 5.19), which is predominantly expressed in the brain, is the gene driving the association for the 5q33.2 locus. These analyses also nominated GNPAT (log Bayes factor = 7.64) ABCB5 (log Bayes factor = 5.97) for the 1p21.1 and 7p21.1 loci. Human brain single-nuclei RNA-sequencing indicates that the gene expression of ADAM23 and GRIA1 is enriched in neurons. ADAM23, a presynaptic protein and GRIA1, a protein subunit of the AMPA receptor, are part of a synaptic protein complex that modulates neuronal excitability. These data provide the first genetic evidence in humans that excitotoxicity may contribute to early neurological instability after acute ischaemic stroke. Ibanez et al. perform a multi-ancestry meta-analysis to investigate the genetic architecture of early stroke outcomes. Two of the eight genome-wide significant loci identified-ADAM23 and GRIA1-are involved in synaptic excitability, suggesting that excitotoxicity contributes to neurological instability after ischaemic stroke.
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  • Result 1-10 of 163
Type of publication
journal article (118)
conference paper (37)
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other publication (1)
book chapter (1)
Type of content
peer-reviewed (120)
other academic/artistic (42)
Author/Editor
Hofman-Bang, C (37)
Bang, P (24)
Bang-Andersen, B (22)
Halldin, C (21)
Farde, L (19)
Carlsson-Skwirut, C (18)
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Spaak, J. (18)
Tornvall, P (16)
Finnema, SJ (16)
Jernberg, T (15)
Agewall, S (13)
Daniel, M. (12)
Collste, O (12)
Gulyas, B (12)
Persson, H (11)
Henareh, L (11)
Schwartz, M. (10)
Robinson, S. (9)
Zheng, Y. (9)
Das, S. (9)
Diaz, R. (9)
Mahajan, A. (9)
Diaz, A. (9)
Aboyans, V (9)
Takahashi, T. (9)
Katz, A. (9)
Anderson, J. (9)
Scott, D. (9)
Jukema, JW (9)
Kim, C. (9)
Ferrari, E. (9)
Park, H. (9)
Hagström, Emil (9)
Collins, N (9)
Larsen, J (9)
Takeda, Y (9)
Sakamoto, T. (9)
Leclercq, F. (9)
White, L (9)
Adamkova, V. (9)
Yusoff, K. (9)
Bang, LE (9)
Garrido, M (9)
de Silva, HA (9)
Hunter, J (9)
Bhatt, DL (9)
Malhotra, V. (9)
Rasmanis, G (9)
Shaw, J (9)
Steg, PG (9)
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Karolinska Institutet (129)
Uppsala University (27)
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University of Gothenburg (9)
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The Swedish School of Sport and Health Sciences (2)
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University of Skövde (1)
Chalmers University of Technology (1)
University of Borås (1)
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Language
English (162)
Swedish (1)
Research subject (UKÄ/SCB)
Medical and Health Sciences (54)
Natural sciences (6)
Social Sciences (4)
Engineering and Technology (2)

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