Blar i Bergen Open Research Archive på forfatter "Andreassen, Ole Andreas"
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Abundant Genetic Overlap between Blood Lipids and Immune-Mediated Diseases Indicates Shared Molecular Genetic Mechanisms
Andreassen, Ole Andreas; Desikan, Rahul S.; Wang, Yunpeng; Thompson, Wesley K.; Schork, Andrew J.; Zuber, Verena; Doncheva, Nadezhda T.; Ellinghaus, E.va; Mattingsdal, Morten; Franke, Andre; Lie, Benedicte. A.; Mills, Ian Geoffrey; Aukrust, Pål; McEvoy, Linda K.; Djurovic, Srdjan; Karlsen, Tom Hemming; Dale, Anders M. (Peer reviewed; Journal article, 2015-04-08)Epidemiological studies suggest a relationship between blood lipids and immune-mediated diseases, but the nature of these associations is not well understood. We used genome-wide association studies (GWAS) to investigate ... -
All-Optical Electrophysiology in hiPSC-Derived Neurons With Synthetic Voltage Sensors
Puppo, Francesca; Sadegh, Sanaz; Trujillo, Cleber A.; Thunemann, Martin; Campbell, Evan P.; Vandenberghe, Matthieu; Shan, Xiwei; Akkouh, Ibrahim; Miller, Evan W.; Bloodgood, Brenda L.; Silva, Gabriel A.; Dale, Anders M.; Einevoll, Gaute; Djurovic, Srdjan; Andreassen, Ole Andreas; Muotri, Alysson R.; Devor, Anna (Journal article; Peer reviewed, 2021)Voltage imaging and “all-optical electrophysiology” in human induced pluripotent stem cell (hiPSC)-derived neurons have opened unprecedented opportunities for high-throughput phenotyping of activity in neurons possessing ... -
Alterations in schizophrenia-associated genes can lead to increased power in delta oscillations
Mäki-Marttunen, Tuomo; Krull, Florian; Bettella, Francesco; Hagen, Espen; Næss, Solveig; Ness, Torbjørn V; Moberget, Torgeir; Elvsåshagen, Torbjørn; Metzner, Christoph; Devor, Anna; Edwards, Andrew G.; Fyhn, Marianne; Djurovic, Srdjan; Dale, Anders; Andreassen, Ole Andreas; Einevoll, Gaute (Peer reviewed; Journal article, 2019-02)Genome-wide association studies have implicated many ion channels in schizophrenia pathophysiology. Although the functions of these channels are relatively well characterized by single-cell studies, the contributions of ... -
Analysis of differentially methylated regions in great apes and extinct hominids provides support for the evolutionary hypothesis of schizophrenia
Banerjee, Niladri; Polushina, Tatiana; Bettella, Francesco; Steen, Vidar Martin; Andreassen, Ole Andreas; Le Hellard, Stephanie (Peer reviewed; Journal article, 2018-12-11)Introduction: The persistence of schizophrenia in human populations separated by geography and time led to the evolutionary hypothesis that proposes schizophrenia as a by-product of the higher cognitive abilities of modern ... -
Applying polygenic risk scoring for psychiatric disorders to a large family with bipolar disorder and major depressive disorder
de Jong, Simone; Diniz, Mateus Jose Abdalla; Saloma, Andiara; Gadelha, Ary; Santoro, Marcos L.; Ota, Vanessa K.; Noto, Cristiano; Morken, Gunnar; Andreassen, Ole Andreas; Melle, Ingrid; Djurovic, Srdjan; Curtis, Charles; Newhouse, Stephen J.; Patel, Hamel; Hall, Lynsey S.; O`Reilly, Paul F.; Belangero, Sintia I.; Bressan, Rodrigo A.; Breen, Gerome (Peer reviewed; Journal article, 2018-10-08)Psychiatric disorders are thought to have a complex genetic pathology consisting of interplay of common and rare variation. Traditionally, pedigrees are used to shed light on the latter only, while here we discuss the ... -
Assessing brain structural associations with working-memory related brain patterns in schizophrenia and healthy controls using linked independent component analysis
Brandt, Christine Lycke; Doan, Nhat Trung; Tønnesen, Siren; Agartz, Ingrid; Hugdahl, Kenneth; Melle, Ingrid; Andreassen, Ole Andreas; Westlye, Lars Tjelta (Peer reviewed; Journal article, 2015)Schizophrenia (SZ) is a psychotic disorder with significant cognitive dysfunction. Abnormal brain activation during cognitive processing has been reported, both in task-positive and task-negative networks. Further, structural ... -
Association between complement component 4A expression, cognitive performance and brain imaging measures in UK Biobank
O'Connell, Kevin S.; Sønderby, Ida Elken; Frei, Oleksandr; van der Meer, Dennis; Athanasiu, Lavinia; Smeland, Olav Bjerkehagen; Alnæs, Dag; Kaufmann, Tobias; Westlye, Lars Tjelta; Steen, Vidar Martin; Andreassen, Ole Andreas; Hughes, Timothy; Djurovic, Srdjan (Journal article; Peer reviewed, 2021)Background Altered expression of the complement component C4A gene is a known risk factor for schizophrenia. Further, predicted brain C4A expression has also been associated with memory function highlighting that altered ... -
Association between leptin levels and severity of suicidal behaviour in schizophrenia spectrum disorders
Gohar, Sherif Mostafa Mohamed Ahmed; Dieset, Ingrid; Steen, Nils Eiel; Mørch, Ragni Helene; Vedal, Trude Seselie Jahr; Reponen, Elina Johanna; Steen, Vidar Martin; Andreassen, Ole Andreas; Melle, Ingrid (Peer reviewed; Journal article, 2019-03-08)Objective: Associations between suicidality and lipid dysregulation are documented in mental illness, but the potential role of leptin remains unclear. We examined the association between leptin and suicidal behaviour in ... -
Association between serum lipid levels, osteoprotegerin and depressive symptomatology in psychotic disorders.
Gohar, Sherif Mostafa Mohamed Ahmed; Dieset, Ingrid; Steen, Nils Eiel; Mørch, Ragni Helene; Iversen, Trude Seselie Jahr; Steen, Vidar Martin; Andreassen, Ole Andreas; Melle, Ingrid (Peer reviewed; Journal article, 2018-05-02)Although the relationship between positive and negative symptoms of psychosis and dyslipidemia has been thoroughly investigated in recent studies, the potential link between depression and lipid status is still under-investigated. ... -
Atherogenic Lipid Ratios Related to Myeloperoxidase and C-Reactive Protein Levels in Psychotic Disorders
Reponen, Elina Johanna; Dieset, Ingrid; Tesli, Martin Steen; Mørch, Ragni Helene; Aas, Monica; Vedal, Trude Seselie Jahr; Haug, Elisabeth; Drange, Ole Kristian; Steen, Nils Eiel; Hope, Sigrun; Szabo, Attila; Gohar, Sherif Mostafa Mohamed Ahmed; Wedervang-Resell, Kirsten; Djurovic, Srdjan; Melle, Ingrid; Aukrust, Pål; Andreassen, Ole Andreas; Ueland, Thor (Journal article; Peer reviewed, 2020)Background: Cardiovascular disease (CVD) is a major cause of premature death in patients with psychotic disorders, where dyslipidemia occurs frequently. In the pathogenesis of these serious mental disorders, a low-grade ... -
Attention-deficit hyperactivity disorder shares copy number variant risk with schizophrenia and autism spectrum disorder
Gudmundsson, Ólafur Ó.; Walters, Gudmundur Bragi; Ingason, Andrés; Johansson, Stefan; Zayats, Tetyana; Athanasiu, Lavinia; Sønderby, Ida Elken; Gustafsson, Omar; Nawaz, Muhammad Sulaman; Jónsson, Gudbjörn F.; Jónsson, Lina; Knappskog, Per; Ingvarsdóttir, Ester; Davidsdóttir, Katrin; Djurovic, Srdjan; Knudsen, Gun Peggy Strømstad; Askeland, Ragna Bugge; Haraldsdóttir, Gyda S.; Baldursson, Gísli; Magnússon, Páll; Sigurdsson, Engilbert; Gudbjartsson, Daníel Fannar; Stéfansson, Hreinn; Andreassen, Ole Andreas; Haavik, Jan; Reichborn-Kjennerud, Ted; Stefánsson, Kári (Peer reviewed; Journal article, 2019-10-17)Attention-deficit/hyperactivity disorder (ADHD) is a highly heritable common childhood-onset neurodevelopmental disorder. Some rare copy number variations (CNVs) affect multiple neurodevelopmental disorders such as ... -
Attenuated Notch signaling in schizophrenia and bipolar disorder
Hoseth, Eva Zsuzsanna; Krull, Florian; Dieset, Ingrid; Mørch, Ragni Helene; Hope, Sigrun; Gardsjord, Erlend Strand; Steen, Nils Eiel; Melle, Ingrid; Brattbakk, Hans-Richard; Steen, Vidar Martin; Aukrust, Pål; Djurovic, Srdjan; Andreassen, Ole Andreas; Ueland, Thor (Peer reviewed; Journal article, 2018-03-28)The Notch signaling pathway plays a crucial role in neurodevelopment and in adult brain homeostasis. We aimed to further investigate Notch pathway activity in bipolar disorder (BD) and schizophrenia (SCZ) by conducting a ... -
Bivariate causal mixture model quantifies polygenic overlap between complex traits beyond genetic correlation
Frei, Oleksandr; Holland, Dominic; Smeland, Olav Bjerkehagen; Shadrin, Alexey A.; Fan, Chun Chieh; Maeland, Steffen; O'Connell, Kevin S.; Wang, Yunpeng; Djurovic, Srdjan; Thompson, Wesley Kurt; Andreassen, Ole Andreas; Dale, Anders (Peer reviewed; Journal article, 2019-06-03)Accumulating evidence from genome wide association studies (GWAS) suggests an abundance of shared genetic influences among complex human traits and disorders, such as mental disorders. Here we introduce a statistical tool, ... -
Brain age prediction reveals aberrant brain white matter in schizophrenia and bipolar disorder: A multi-sample diffusion tensor imaging study
Tønnesen, Siren; Kaufmann, Tobias; de Lange, Ann-Marie Glasø; Richard, Geneviève; Nhat Trung, Doan; Alnæs, Dag; van der Meer, Dennis; Rokicki, Jaroslav; Moberget, Torgeir; Maximov, Ivan; Agartz, Ingrid; Aminoff, Sofie Ragnhild; Beck, Dani; Barch, Deanna M.; Beresniewicz, Justyna; Cervenka, Simon; Fatouros-Bergman, Helena; Craven, Alexander R.; Flyckt, Lena; Gurholt, Tiril Pedersen; Haukvik, Unn Kristin H.; Hugdahl, Kenneth; Johnsen, Erik; Jönsson, Erik Gunnar; Schizophrenia Project (KaSP), Karolinska; Kolskår, Knut-Kristian; Kroken, Rune Andreas; Lagerberg, Trine Vik; Løberg, Else-Marie; Nordvik, Jan Egil; Sanders, Anne-Marthe; Ulrichsen, Kristine Moe; Andreassen, Ole Andreas; Westlye, Lars Tjelta (Journal article; Peer reviewed, 2020)Background Schizophrenia (SZ) and bipolar disorder (BD) share substantial neurodevelopmental components affecting brain maturation and architecture. This necessitates a dynamic lifespan perspective in which brain aberrations ... -
Brain scans from 21,297 individuals reveal the genetic architecture of hippocampal subfield volumes
van der Meer, Dennis; Rokicki, Jaroslav; Kaufmann, Tobias; Còrdova Palomera, Aldo; Moberget, Torgeir; Alnæs, Dag; Bettella, Francesco; Frei, Oleksandr; Doan, Nhat Trung; Sønderby, Ida Elken; Smeland, Olav Bjerkehagen; Agartz, Ingrid; Bertolino, Alessandro; Bralten, Janita; Brandt, Christine Lycke; Buitelaar, Jan K.; Djurovic, Srdjan; van Donkelaar, Marjolein; Dørum, Erlend Solberg; Espeseth, Thomas; Faraone, Stephen V.; Fernandéz, Guillén; Fisher, Simon E.; Franke, Barbara; Haatveit, Beathe Christin; Hartman, Catharina A.; Hoekstra, Pieter J.; Håberg, Asta; Jönsson, Erik G.; Kolskår, Knut-Kristian; Le Hellard, Stephanie; Lund, Martina Jonette; Lundervold, Astri; Lundervold, Arvid; Melle, Ingrid; Monereo Sanchez, Jennifer; Norbom, Linn Christin Bonaventure; Nordvik, Jan Egil; Nyberg, Lars; Oosterlaan, Jaap; Papalino, Marco; Papassotiropoulos, Andreas; Pergola, Giulio; de Quervain, Dominique J.F.; Richard, Geneviéve´; Sanders, Anne-Marthe; Selvaggi, Pierluigi; Shumskaya, Elena; Steen, Vidar Martin; Tønnesen, Siren; Ulrichsen, Kristine Moe; Zwiers, Marcel P.; Andreassen, Ole Andreas; Westlye, Lars Tjelta (Peer reviewed; Journal article, 2018-10-02)The hippocampus is a heterogeneous structure, comprising histologically distinguishable subfields. These subfields are differentially involved in memory consolidation, spatial navigation and pattern separation, complex ... -
Cannabis Use Is Associated With Increased Levels of Soluble gp130 in Schizophrenia but Not in Bipolar Disorder
Szabo, Attila; Akkouh, Ibrahim; Ueland, Thor; Lagerberg, Trine Vik; Dieset, Ingrid; Bjella, Thomas; Aukrust, Pål; Le Hellard, Stephanie; Stavrum, Anne-Kristin; Melle, Ingrid; Andreassen, Ole Andreas; Djurovic, Srdjan (Journal article; Peer reviewed, 2020)The complex effects of plant cannabinoids on human physiology is not yet fully understood, but include a wide spectrum of effects on immune modulation. The immune system and its inflammatory effector pathways are recently ... -
Cell type specificity of neurovascular coupling in cerebral cortex
Uhlirova, Hana; Kiliç, Kivilcim; Tian, Peifang; Thunemann, Martin; Desjardins, Michèle; Saisan, Payam A.; Sakadžić, Sava; Ness, Torbjørn Vefferstad; Mateo, Celine; Cheng, Qun; Weldy, Kimberly L.; Razoux, Florence; Vandenberghe, Matthieu; Cremonesi, Jonathan A.; Ferri, Christopher G.L.; Nizar, Krystal; Sridhar, Vishnu B.; Steed, Tyler C.; Abashin, Maxim; Fainman, Yeshaiahu; Masliah, Eliezer; Djurovic, Srdjan; Andreassen, Ole Andreas; Silva, Gabriel A.; Boas, David A.; Kleinfeld, David; Buxton, Richard B.; Einevoll, Gaute; Dale, Anders; Devor, Anna (Peer reviewed; Journal article, 2016-05-31)Identification of the cellular players and molecular messengers that communicate neuronal activity to the vasculature driving cerebral hemodynamics is important for (1) the basic understanding of cerebrovascular regulation ... -
Characterisation of age and polarity at onset in bipolar disorder
Kalman, Janos L.; Loohuis, Loes M. Olde; Vreeker, Annabel; McQuillin, Andrew; Stahl, Eli A.; Ruderfer, Douglas; Grigoroiu-Serbanescu, Maria; Panagiotaropoulou, Georgia; Ripke, Stephan; Bigdeli, Tim B.; Stein, Frederike; Meller, Tina; Meinert, Susanne; Pelin, Helena; Streit, Fabian; Papiol, Sergi; Adams, Mark J.; Adolfsson, Rolf; Adorjan, Kristina; Agartz, Ingrid; Aminoff, Sofie Ragnhild; Anderson-Schmidt, Heike; Andreassen, Ole Andreas; Ardau, Raffaella; Aubry, Jean-Michel; Balaban, Ceylan; Djurovic, Srdjan; Lagerberg, Trine Vik; Melle, Ingrid; Smeland, Olav Bjerkehagen; O'Connell, Kevin Sean (Journal article; Peer reviewed, 2021)Background Studying phenotypic and genetic characteristics of age at onset (AAO) and polarity at onset (PAO) in bipolar disorder can provide new insights into disease pathology and facilitate the development of screening ... -
Chronotype and cellular circadian rhythms predict the clinical response to lithium maintenance treatment in patients with bipolar disorder
McCarthy, Michael J.; Stautland, Andrea; Jakobsen, Petter; Ødegaard, Ketil Joachim; Andreassen, Ole Andreas; Djurovic, Srdjan; Morken, Gunnar; Schøyen, Helle Kristine; McInnis, Melvin G.; Alda, Martin; Gage, Fred H.; Calabrese, Joseph R.; Zandi, Peter P.; Nievergelt, Caroline M.; Shilling, Paul D.; Kelsoe, John R. (Peer reviewed; Journal article, 2019)Bipolar disorder (BD) is a serious mood disorder associated with circadian rhythm abnormalities. Risk for BD is genetically encoded and overlaps with systems that maintain circadian rhythms. Lithium is an effective mood ... -
Common brain disorders are associated with heritable patterns of apparent aging of the brain
Kaufmann, Tobias; van der Meer, Dennis; Doan, Nhat Trung; Schwarz, Emanuel; Lund, Martina Jonette; Agartz, Ingrid; Alnæs, Dag; Barch, Deanna M.; Baur-Streubel, Ramona; Bertolino, Alessandro; Bettella, Francesco; Beyer, Mona K.; Bøen, Erlend; Borgwardt, Stefan; Brandt, Christine Lycke; Buitelaar, Jan; Celius, Elisabeth Gulowsen; Cervenka, Simon; Conzelmann, Annette; Còrdova Palomera, Aldo; Dale, Anders; de Quervain, Dominique J.F.; di Carlo, Pasquale; Djurovic, Srdjan; Dørum, Erlend Solberg; Eisenacher, Sarah; Elvsåshagen, Torbjørn; Espeseth, Thomas; Fatouros-Bergman, Helena; Flyckt, Lena; Franke, Barbara; Frei, Oleksandr; Haatveit, Beathe; Håberg, Asta; Harbo, Hanne Flinstad; Hartman, Catharina A; Heslenfeld, Dirk J; Hoekstra, Pieter J; Høgestøl, Einar August; Jernigan, Terry L.; Jonassen, Rune; Jönsson, Erik Gunnar; Kirsch, Peter; Kłoszewska, Iwona; Kolskår, Knut-Kristian; Landrø, Nils Inge; Le Hellard, Stephanie; Lesch, Klaus-Peter; Lovestone, Simon; Lundervold, Arvid; Lundervold, Astri; Maglanoc, Luigi Angelo; Malt, Ulrik Fredrik; Mecocci, Patrizia; Melle, Ingrid; Meyer-Lindenberg, Andreas; Moberget, Torgeir; Norbom, Linn Christin Bonaventure; Nordvik, Jan Egil; Nyberg, Lars; Oosterlaan, Jaap; Papalino, Marco; Papassotiropoulos, Andreas; Pauli, Paul; Pergola, Giulio; Persson, Karin Ester Torun; Richard, Geneviève; Rokicki, Jaroslav; Sanders, Anne-Marthe; Selbæk, Geir; Shadrin, Alexey A.; Smeland, Olav Bjerkehagen; Soininen, Hilkka; Sowa, Piotr; Steen, Vidar Martin; Tsolaki, Magda; Ulrichsen, Kristine Moe; Vellas, Bruno; Wang, Lei; Westman, Eric; Ziegler, Georg C.; Zink, Mathias; Andreassen, Ole Andreas; Westlye, Lars Tjelta (Peer reviewed; Journal article, 2019)Common risk factors for psychiatric and other brain disorders are likely to converge on biological pathways influencing the development and maintenance of brain structure and function across life. Using structural MRI data ...