Opin vísindi

Fletta eftir höfundi "Bjornsdottir, Gyda"

Fletta eftir höfundi "Bjornsdottir, Gyda"

Röðun: Raða: Niðurstöður:

  • Icon
    15q11.2 CNV affects cognitive, structural and functional correlates of dyslexia and dyscalculia 
    Ulfarsson, Magnus; Walters, G B; Gústafsson, O; Steinberg, S; Silva, A; Doyle, O M; Brammer, M; Gudbjartsson, Daniel; Arnarsdóttir, S; Jonsdottir, Gudbjorg; Gísladóttir, R S; Bjornsdottir, Gyda; Helgason, H; Ellingsen, L M; Halldórsson, J G; Sæmundsen, Evald E.; Stefánsdóttir, B; Jónsson, L; Eiríksdóttir, V K; Eiríksdóttir, G R; Jóhannesdóttir, G H; Unnsteinsdóttir, U; Jónsdóttir, B; Magnúsdóttir, B B; sulem, patrick; Þorsteinsdóttir, Unnur; Sigurðsson, E; Brandeis, D; Meyer-Lindenberg, A; Stefánsson, H; Stefansson, Kari (Springer Nature, 2017-04-25)
    Several copy number variants have been associated with neuropsychiatric disorders and these variants have been shown to also influence cognitive abilities in carriers unaffected by psychiatric disorders. Previously, we associated the 15q11.2(BP1–BP2) ...
  • Icon
    Brain age prediction using deep learning uncovers associated sequence variants 
    Jónsson, Benedikt Atli; Bjornsdottir, Gyda; Thorgeirsson, Thorgeir; Ellingsen, Lotta María; Walters, G. Bragi; Gudbjartsson, Daniel; Stefansson, Hreinn; Stefansson, Kari; Ulfarsson, Magnus (Springer Science and Business Media LLC, 2019-11-27)
    Machine learning algorithms can be trained to estimate age from brain structural MRI. The difference between an individual’s predicted and chronological age, predicted age difference (PAD), is a phenotype of relevance to aging and brain disease. Here, ...
  • Icon
    The CRTAC1 Protein in Plasma Is Associated With Osteoarthritis and Predicts Progression to Joint Replacement: A Large-Scale Proteomics Scan in Iceland : A Large-Scale Proteomics Scan in Iceland 
    Styrkarsdottir, Unnur; Lund, S.H.; Saevarsdottir, S.; Magnusson, M.I.; Gunnarsdottir, K.; Norddahl, Gudmundur L.; Frigge, Michael L.; Ivarsdottir, E.V.; Bjornsdottir, Gyda; Holm, Hilma; Thorgeirsson, Guðmundur; Rafnar, T.; Jonsdottir, I.; Ingvarsson, T.; Jonsson, H.; Sulem, P.; Thorsteinsdottir, U.; Gudbjartsson, Daniel Fannar; Stefansson, K.; Thorgeirsson, Gudmundur; Ingvarsson, Þorvaldur (2021-11)
    Objective: Biomarkers for diagnosis and progression of osteoarthritis (OA) are lacking. This study was undertaken to identify circulating biomarkers for OA that could predict disease occurrence and/or progression to joint replacement. Methods: Using ...
  • Icon
    A genome-wide meta-analysis uncovers six sequence variants conferring risk of vertigo 
    Skuladottir, Astros Th; Bjornsdottir, Gyda; Nawaz, Muhammad Sulaman; Petersen, Hannes; Rognvaldsson, Solvi; Moore, Kristjan Helgi Swerford; Olafsson, Pall I.; Magnusson, Sigurður H.; Bjornsdottir, Anna; Sveinsson, Olafur A.; Sigurdardottir, Gudrun R.; Sævarsdóttir, Sædís; Ivarsdottir, Erna V.; Stefánsdóttir, Lilja; Gunnarsson, Bjarni; Muhlestein, Joseph B.; Knowlton, Kirk U.; Jones, David A.; Nadauld, Lincoln D.; Hartmann, Annette M.; Rujescu, Dan; Strupp, Michael; Walters, Guðmundur Bragi; Thorgeirsson, Thorgeir E.; Jónsdóttir, Ingileif; Holm, Hilma; Thorleifsson, Gudmar; Gudbjartsson, Daniel F.; Sulem, Patrick; Stefansson, Hreinn; Stefansson, Kari (2021-10-07)
    Vertigo is the leading symptom of vestibular disorders and a major risk factor for falls. In a genome-wide association study of vertigo (Ncases = 48,072, Ncontrols = 894,541), we uncovered an association with six common sequence variants in individuals ...
  • Icon
    A meta-analysis uncovers the first sequence variant conferring risk of Bell’s palsy 
    Skuladottir, Astros Th; Bjornsdottir, Gyda; Thorleifsson, Gudmar; Walters, G. Bragi; Nawaz, Muhammad Sulaman; Moore, Kristjan Helgi Swerford; Olason, Pall I.; Thorgeirsson, Thorgeir E.; Sigurpalsdottir, Brynja; Sveinbjornsson, Gardar; Eggertsson, Hannes P.; Magnusson, Sigurdur H.; Oddsson, Asmundur; Bjornsdottir, Anna; Vikingsson, Arnor; Sveinsson, Olafur A.; Hrafnsdottir, Maria G.; Sigurdardottir, Gudrun R.; Halldorsson, Bjarni V.; Hansen, Thomas Folkmann; Paarup, Helene; Erikstrup, Christian; Nielsen, Kaspar; Klokker, Mads; Bruun, Mie Topholm; Sorensen, Erik; Banasik, Karina; Burgdorf, Kristoffer S.; Pedersen, Ole Birger; Ullum, Henrik; Jonsdottir, Ingileif; Stefansson, Hreinn; Stefansson, Kari (2021-02-18)
    Bell’s palsy is the most common cause of unilateral facial paralysis and is defined as an idiopathic and acute inability to control movements of the facial muscles on the affected side. While the pathogenesis remains unknown, previous studies have ...
  • Icon
    Physical and cognitive impact following SARS-CoV-2 infection in a large population-based case-control study 
    Holm, Hilma; Ivarsdottir, Erna V; Olafsdottir, Thorhildur; Thorolfsdottir, Rosa; Eythorsson, Elias; Norland, Kristjan; Gisladottir, Rosa; Jonsdottir, Gudrun; Unnsteinsdottir, Unnur; Sveinsdottir, Kristin E; Jonsson, Benedikt A; Andresdottir, Margret; Arnar, Davíð Ottó; Arnthorsson, Asgeir O; Birgisdottir, Kolbrún; Bjarnadottir, Kristbjorg; Bjarnadottir, Solveig; Bjornsdottir, Gyda; Einarsson, Gudmundur; Eiriksdottir, Berglind; Gardarsdottir, Elisabet Eir; Gíslason, Þórarinn; Gottfreðsson, Magnús; Gudmundsdottir, Steinunn; Gudmundsson, Julius; Gunnarsdottir, Kristbjorg; Helgadottir, Anna; Helgason, Dadi; Hinriksdottir, Ingibjorg; Ingvarsson, Ragnar Freyr; Jonasdottir, Sigga S; Jónsdóttir, Ingileif; Karlsdottir, Tekla H; Kristinsdottir, Anna M; Kristinsson, Sigurður Yngvi; Kristjansdottir, Steinunn; Löve, Þorvarður Jón; Lúðvíksdóttir, Dóra; Masson, Gisli; Norddahl, Gudmundur; Olafsdottir, Thorunn; Ólafsson, Ísleifur; Rafnar, Thorunn; Runólfsdóttir, Hrafnhildur L.; Saemundsdottir, Jona; Sigurbjornsson, Svanur; Sigurdardottir, Kristin; Sigurðsson, Engilbert; Sigurðsson, Martin Ingi; Sigurdsson, Emil L; Steinthorsdottir, Valgerdur; Sveinbjornsson, Gardar; Thorarensen, Emil A; Thorbjornsson, Bjarni; Thorsteinsdottir, Brynja; Tragante, Vinicius; Ulfarsson, Magnus O; Stefansson, Hreinn; Gislason, Thorsteinn; Kristjansson, Mar; Palsson, Runolfur; Sulem, Patrick; Thorsteinsdottir, Unnur; Thorgeirsson, Gudmundur; Gudbjartsson, Daniel F; Stefansson, Kari (2023-07-06)
    BACKGROUND: Persistent symptoms are common after SARS-CoV-2 infection but correlation with objective measures is unclear. METHODS: We invited all 3098 adults who tested SARS-CoV-2 positive in Iceland before October 2020 to the deCODE Health Study. We ...
  • Icon
    Polygenic risk scores for schizophrenia and bipolar disorder associate with addiction 
    Reginsson, Gunnar W.; Ingason, Andrés; Euesden, Jack; Bjornsdottir, Gyda; Ólafsson, Sigurgeir; Sigurdsson, Engilbert; Óskarsson, Högni; Tyrfingsson, Þórarinn; Rúnarsdóttir, Valgerður; Hansdóttir, Ingunn; Steinberg, Stacy; Stefánsson, Hreinn; Gudbjartsson, Daniel; Thorgeirsson, Thorgeir; Stefansson, Kari (Wiley, 2017-02-23)
    We use polygenic risk scores (PRSs) for schizophrenia (SCZ) and bipolar disorder (BPD) to predict smoking, and addiction to nicotine, alcohol or drugs in individuals not diagnosed with psychotic disorders. Using PRSs for 144 609 subjects, including 10 ...
  • Icon
    A PRPH splice-donor variant associates with reduced sural nerve amplitude and risk of peripheral neuropathy 
    Bjornsdottir, Gyda; Ívarsdóttir, Erna V.; Bjarnadóttir, Kristbjörg; Benonisdottir, Stefania; Gylfadottir, Sandra Sif; Arnadottir, Gudny; Benediktsson, Rafn; Halldorsson, Gisli; Helgadottir, Anna; Jónasdóttir, Aðalbjörg; Jónasdóttir, Áslaug; Jonsdottir, Ingileif; Kristinsdóttir, Anna Margrét; Magnússon, Ólafur T.; Másson, Gísli; Melsted, Páll; Rafnar, Thorunn; Sigurðsson, Ásgeir; Sigurdsson, Gunnar; Skúladóttir, Ástrós; Steinthorsdottir, Valgerdur; Styrkarsdottir, Unnur; Thorgeirsson, Gudmundur; Thorleifsson, Gudmar; Vikingsson, Arnor; Gudbjartsson, Daniel; Holm, Hilma; Stefansson, Hreinn; Thorsteinsdottir, Unnur; Norðdahl, Guðmundur L.; sulem, patrick; Thorgeirsson, Thorgeir; Stefansson, Kari (Springer Science and Business Media LLC, 2019-04-16)
    Nerve conduction (NC) studies generate measures of peripheral nerve function that can reveal underlying pathology due to axonal loss, demyelination or both. We perform a genome-wide association study of sural NC amplitude and velocity in 7045 Icelanders ...
  • Icon
    Rare variants with large effects provide functional insights into the pathology of migraine subtypes, with and without aura 
    Bjornsdottir, Gyda; Chalmer, Mona A.; Stefánsdóttir, Lilja; Skuladottir, Astros Th; Einarsson, Gudmundur; Andrésdóttir, Margrét; Beyter, Doruk; Ferkingstad, Egil; Gretarsdottir, Solveig; Halldórsson, Bjarni Vilhjálmur; Halldórsson, Gísli Hreinn; Helgadottir, Anna; Helgason, Hannes; Hjorleifsson Eldjarn, Grimur; Jonasdottir, Adalbjorg; Jonasdottir, Aslaug; Jónsdóttir, Ingileif; Knowlton, Kirk U.; Nadauld, Lincoln D.; Lund, Sigrún Helga; Magnusson, Olafur Th; Melsted, Páll; Moore, Kristjan H.S.; Oddsson, Asmundur; Olason, Pall I.; Sigurdsson, Asgeir; Stefansson, Olafur A.; Saemundsdottir, Jona; Sveinbjornsson, Gardar; Tragante, Vinicius; Unnsteinsdottir, Unnur; Walters, Guðmundur Bragi; Zink, Florian; Rødevand, Linn; Andreassen, Ole A.; Igland, Jannicke; Lie, Rolv T.; Haavik, Jan; Banasik, Karina; Brunak, Søren; Didriksen, Maria; T. Bruun, Mie; Erikstrup, Christian; Kogelman, Lisette J.A.; Nielsen, Kaspar R.; Sørensen, Erik; Pedersen, Ole B.; Ullum, Henrik; Bay, Jakob; Boldsen, Jens K.; Brodersen, Thorsten; Burgdorf, Kristoffer; Dinh, Khoa M.; Dowsett, Joseph; Feenstra, Bjarke; Geller, Frank; Hindhede, Lotte; Hjalgrim, Henrik; Jacobsen, Rikke L.; Jemec, Gregor; Kaspersen, Katrine; Kjerulf, Bertram D.; Larsen, Margit A.H.; Louloudis, Ioannis; Lundgaard, Agnete; Mikkelsen, Susan; Mikkelsen, Christina; Nissen, Ioanna; Nyegaard, Mette; Henriksen, Alexander P.; Rohde, Palle D.; Rostgaard, Klaus; Swinn, Michael; Thørner, Lise W.; Bruun, Mie T.; Werge, Thomas; Westergaard, David; Masson, Gisli; Þorsteinsdóttir, Unnur; Olesen, Jes; Ludvigsson, Petur; Thorarensen, Ólafur; Bjornsdottir, Anna; Sigurdardottir, Gudrun R.; Sveinsson, Ólafur Árni; Ostrowski, Sisse R.; Holm, Hilma; Gudbjartsson, Daniel F.; Thorleifsson, Gudmar; Sulem, Patrick; Stefansson, Hreinn; Thorgeirsson, Thorgeir E.; Hansen, Thomas F.; Stefánsson, Kári (2023-11)
    Migraine is a complex neurovascular disease with a range of severity and symptoms, yet mostly studied as one phenotype in genome-wide association studies (GWAS). Here we combine large GWAS datasets from six European populations to study the main migraine ...
  • Icon
    Sequence variant affects GCSAML splicing, mast cell specific proteins, and risk of urticaria 
    Kristjansson, Ragnar P.; Oskarsson, Gudjon R.; Skuladottir, Astros; Oddsson, Asmundur; Rognvaldsson, Solvi; Sveinbjornsson, Gardar; Lund, Sigrun H.; Jensson, Brynjar O.; Styrmisdottir, Edda L.; Halldorsson, Gisli H.; Ferkingstad, Egil; Eldjarn, Grimur Hjorleifsson; Beyter, Doruk; Kristmundsdottir, Snædis; Juliusson, Kristinn; Fridriksdottir, Run; Arnadottir, Gudny A.; Katrinardottir, Hildigunnur; Snorradottir, Margret H.; Tragante, Vinicius; Stefansdottir, Lilja; Ivarsdottir, Erna V.; Bjornsdottir, Gyda; Halldorsson, Bjarni V.; Thorleifsson, Gudmar; Lúðvíksson, Björn Rúnar; Önundarson, Páll Torfi; Sævarsdóttir, Sædís; Melsted, Pall; Norddahl, Gudmundur L.; Björnsdóttir, Unnur Steina; Olafsdottir, Thorunn; Gudbjartsson, Daniel F.; Thorsteinsdottir, Unnur; Jonsdottir, Ingileif; Sulem, Patrick; Stefansson, Kari (2023-07-10)
    Urticaria is a skin disorder characterized by outbreaks of raised pruritic wheals. In order to identify sequence variants associated with urticaria, we performed a meta-analysis of genome-wide association studies for urticaria with a total of 40,694 ...
  • Icon
    Sequence variant at 8q24.21 associates with sciatica caused by lumbar disc herniation 
    Bjornsdottir, Gyda; Benonisdottir, Stefania; Sveinbjornsson, Gardar; Styrkarsdottir, Unnur; Þorleifsson, Guðmar; Walters, G. Bragi; Björnsson, Aron; Ólafsson, Ingvar Hákon; Úlfarsson, Elfar; Víkingsson, Arnór; Hansdóttir, Ragnheiður; Karlsson, Karl O.; Rafnar, Thorunn; Jonsdottir, Ingileif; Frigge, Michael L.; Kong, Augustine; Oddsson, Asmundur; Másson, Gísli; Magnússon, Ólafur T.; Gudbjartsson, Tomas; Stefánsson, Hreinn; sulem, patrick; Gudbjartsson, Daniel; Thorsteinsdottir, Unnur; Thorgeirsson, Thorgeir; Stefansson, Kari (Springer Nature, 2017-02-22)
    Lumbar disc herniation (LDH) is common and often debilitating. Microdiscectomy of herniated lumbar discs (LDHsurg) is performed on the most severe cases to resolve the resulting sciatica. Here we perform a genome-wide association study on 4,748 LDHsurg ...
  • Icon
    Sequence variants in malignant hyperthermia genes in Iceland : classification and actionable findings in a population database 
    Fridriksdottir, Run; Jónsson, Arnar Jan; Jensson, Brynjar O.; Sverrisson, Kristinn O.; Arnadottir, Gudny A.; Skarphéðinsdóttir, Sigurbjorg J.; Katrinardottir, Hildigunnur; Snaebjornsdottir, Steinunn; Jonsson, Hakon; Eiriksson, Ogmundur; Óskarsson, Guðjón Reykdal; Oddsson, Asmundur; Jonasdottir, Adalbjorg; Jonasdottir, Aslaug; Sigurdsson, Gisli H.; Indriðason, Einar Páll; Sigurðsson, Stefán B.; Bjornsdottir, Gyda; Saemundsdottir, Jona; Magnusson, Olafur T.; Björnsson, Hans Tómas; Thorsteinsdottir, Unnur; Sigurdsson, Theodor S.; Sulem, Patrick; Sigurðsson, Martin Ingi; Stefansson, Kari (2021-08-31)
    Malignant hyperthermia (MH) susceptibility is a rare life-threatening disorder that occurs upon exposure to a triggering agent. MH is commonly due to protein-altering variants in RYR1 and CACNA1S. The American College of Medical Genetics and Genomics ...
  • Icon
    Using multivariable Mendelian randomization to estimate the causal effect of bone mineral density on osteoarthritis risk, independently of body mass index 
    Hartley, April; Sanderson, Eleanor; Granell, Raquel; Paternoster, Lavinia; Zheng, Jie; Smith, George Davey; Southam, Lorraine; Hatzikotoulas, Konstantinos; Boer, Cindy G.; Van Meurs, Joyce; Zeggini, Eleftheria; Gregson, Celia L.; Tobias, Jon H.; Stefánsdóttir, Lilja; Zhang, Yanfei; De Almeida, Rodrigo Coutinho; Wu, Tian T.; Teder-Laving, Maris; Skogholt, Anne Heidi; Terao, Chikashi; Zengini, Eleni; Alexiadis, George; Barysenka, Andrei; Bjornsdottir, Gyda; Gabrielsen, Maiken E.; Gilly, Arthur; Ingvarsson, Þorvaldur; Johnsen, Marianne B.; Jónsson, Helgi; Kloppenburg, Margreet G.; Luetge, Almut; Mägi, Reedik; Mangino, Massimo; Nelissen, Rob R.G.H.H.; Shivakumar, Manu; Steinberg, Julia; Takuwa, Hiroshi; Thomas, Laurent; Tuerlings, Margo; Babis, George; Cheung, Jason Pui Yin; Samartzis, Dino; Lietman, Steve A.; Slagboom, P. Eline; Stefánsson, Kári; Uitterlinden, André G.; Winsvold, Bendik; Zwart, John Anker; Sham, Pak Chung; Thorleifsson, Gudmar; Gaunt, Tom R.; Morris, Andrew P.; Valdes, Ana M.; Tsezou, Aspasia; Cheah, Kathryn S.E.; Ikegawa, Shiro; Hveem, Kristian; Esko, Tõnu; Wilkinson, J. Mark; Meulenbelt, Ingrid; Michael Lee, Ming Ta; Styrkársdóttir, Unnur (2022-08-01)
    Objectives: Observational analyses suggest that high bone mineral density (BMD) is a risk factor for osteoarthritis (OA); it is unclear whether this represents a causal effect or shared aetiology and whether these relationships are body mass index ...