Blar i Faculty of Medicine på forfatter "Andreassen, Ole Andreas"
-
Maternal and offspring genetic risk score analyses of fetal alcohol exposure and attention-deficit hyperactivity disorder risk in offspring
Haan, Elis; Sallis, Hannah M.; Ystrøm, Eivind; Njølstad, Pål Rasmus; Andreassen, Ole Andreas; Reichborn-Kjennerud, Ted; Munafo, Marcus R.; Havdahl, Alexandra; Zuccolo, Luisa (Journal article; Peer reviewed, 2021)Background: Studies investigating the effects of prenatal alcohol exposure on childhood attention-deficit hyperactivity disorder (ADHD) symptoms using conventional observational designs have reported inconsistent findings, ... -
Meta-analysis of Alzheimer’s disease on 9,751 samples from Norway and IGAP study identifies four risk loci
Witoelar, Aree; Rongve, Arvid; Almdahl, Ina Selseth; Ulstein, Ingun; Engvig, Andreas; White, Linda Rosemary; Selbæk, Geir; Stordal, Eystein; Andersen, Fredrik; Brækhus, Anne; Saltvedt, Ingvild; Engedal, Knut; Hughes, Timothy; Bergh, Sverre; Bråthen, Geir; Bogdanovic, Nenad; Bettella, Francesco; Wang, Yunpeng; Athanasiu, Lavinia; Bahrami, Shahram; Le Hellard, Stephanie; Giddaluru, Sudheer; Dale, Anders M; Sando, Sigrid Botne; Steinberg, Stacy; Stefansson, Hreinn; Snaedal, Jon; Desikan, Rahul S; Stefansson, Kari; Aarsland, Dag; Djurovic, Srdjan; Fladby, Tormod; Andreassen, Ole Andreas (Peer reviewed; Journal article, 2018-12-27)A large fraction of genetic risk factors for Alzheimer’s Disease (AD) is still not identified, limiting the understanding of AD pathology and study of therapeutic targets. We conducted a genome-wide association study (GWAS) ... -
Metabolic dysfunctions in the kynurenine pathway, noradrenergic and purine metabolism in schizophrenia and bipolar disorders
Steen, Nils Eiel; Dieset, Ingrid; Hope, Sigrun; Vedal, Trude Seselie Jahr; Smeland, Olav Bjerkehagen; Matson, Wayne; Kaddurah-Daouk, Rima; Agartz, Ingrid; Melle, Ingrid; Djurovic, Srdjan; Jönsson, Erik Gunnar; Bogdanov, Mikhail; Andreassen, Ole Andreas (Peer reviewed; Journal article, 2020)Background: We aimed at exploring potential pathophysiological processes across psychotic disorders, applying metabolomics in a large and well-characterized sample of patients and healthy controls. Methods: Patients with ... -
MicroRNAs enrichment in GWAS of complex human phenotypes
Goulart, Luiz Fernando De Souza; Bettella, Franscesco; Sønderby, Ida Elken; Schork, AJ; Thompson, Kurt Wesley; Mattingsdal, Morten; Steen, Vidar Martin; Zuber, Verena; Wang, Yunpeng; Dale, Anders; Andreassen, Ole Andreas; Djurovic, Srdjan (Peer reviewed; Journal article, 2015-04-16)Background: The genotype information carried by Genome-wide association studies (GWAS) seems to have the potential to explain more of the ‘missing heritability’ of complex human phenotypes, given improved statistical ... -
Neurocognitive profiles in treatment-resistant bipolar I and bipolar II disorder depression
Kessler, Ute; Schøyen, Helle Kristine; Andreassen, Ole Andreas; Eide, Geir Egil; Hammar, Åsa; Malt, Ulrik F.; Ødegaard, Ketil Joachim; Morken, Gunnar; Sundet, Kjetil; Vaaler, Arne E. (Peer reviewed; Journal article, 2013-04-04)Background: The literature on the neuropsychological profiles in Bipolar disorder (BD) depression is sparse. The aims of the study were to assess the neurocognitive profiles in treatment-resistant, acutely admitted BD ... -
Neurocognitive profiles in treatment-resistant bipolar I and bipolar II disorder depression
Kessler, Ute; Schøyen, Helle Kristine; Andreassen, Ole Andreas; Eide, Geir Egil; Hammar, Åsa; Malt, Ulrik Fredrik; Ødegaard, Ketil Joachim; Morken, Gunnar; Sundet, Kjetil Søren; Vaaler, Arne Einar (Peer reviewed; Journal article, 2013-04-04)Background The literature on the neuropsychological profiles in Bipolar disorder (BD) depression is sparse. The aims of the study were to assess the neurocognitive profiles in treatment-resistant, acutely admitted BD ... -
Novel loci associated with attention-deficit/hyperactivity disorder are revealed by leveraging polygenic overlap with educational attainment
Shadrin, Alexey A.; Smeland, Olav Bjerkehagen; Zayats, Tetyana; Schork, Andrew J; Frei, Oleksandr; Bettella, Francesco; Witoelar, Aree; Li, Wen; Eriksen, Jon Alm; Krull, Florian; Djurovic, Srdjan; Faraone, Stephen V.; Reichborn-Kjennerud, Ted; Thompson, Wesley K; Johansson, Stefan; Haavik, Jan; Dale, Anders; Wang, Yunpeng; Andreassen, Ole Andreas (Peer reviewed; Journal article, 2018-02)Objective Attention-deficit/hyperactivity disorder (ADHD) is a common and highly heritable psychiatric condition. By exploiting the reported relationship between ADHD and educational attainment (EA), we aimed to improve ... -
Parents’ Attitudes toward Clinical Genetic Testing for Autism Spectrum Disorder—Data from a Norwegian Sample
Johannessen, Tor Jarle; Nærland, Terje; Hope, Sigrun; Torske, Tonje; Høyland, Anne Lise; Strohmaier, Jana; Heiberg, Arvid; Rietschel, Marcella; Djurovic, Srdjan; Andreassen, Ole Andreas (Peer reviewed; Journal article, 2017-05-18)Clinical genetic testing (CGT) of children with autism spectrum disorder (ASD) may have positive and negative effects. Knowledge about parents’ attitudes is needed to ensure good involvement of caregivers, which is crucial ... -
The Pharmacogenomics of Bipolar Disorder study (PGBD): Identification of genes for lithium response in a prospective sample
Ødegaard, Ketil Joachim; Alda, Martin; Anand, Anit; Andreassen, Ole Andreas; Balaraman, Yokesh; Berrettini, Wade H.; Bhattacharjee, Abesh; Brennand, Kristen J.; Burdick, Katherine E.; Calabrese, Joseph R.; Calkin, Cynthia V.; Claasen, Ana; Coryell, William H.; Craig, David; DeModena, Anna; Frye, Mark A.; Gage, Fred H.; Gao, Keming; Garnham, Julie; Gershon, Elliot; Jakobsen, Petter; Leckband, Susan G.; McCarthy, Michael J.; McInnis, Melvin G.; Maihofer, Adam X.; Mertens, Jerome; Morken, Gunnar; Nievergelt, Caroline M.; Nurnberger, John I.; Pham, Son; Schøyen, Helle Kristine; Shekhtman, Tatyana; Shilling, Paul D.; Szelinger, Szabolcs; Tarwater, Bruce; Yao, Jun; Zandi, Peter P.; Kelsoe, John R. (Peer reviewed; Journal article, 2016-05-05)Background: Bipolar disorder is a serious and common psychiatric disorder characterized by manic and depressive mood switches and a relapsing and remitting course. The cornerstone of clinical management is stabilization ... -
Polygenic overlap and shared genetic loci between loneliness, severe mental disorders, and cardiovascular disease risk factors suggest shared molecular mechanisms
Rødevand, Linn; Bahrami, Shahram; Frei, Oleksandr; Lin, Aihua; Gani, Osman; Shadrin, Alexey A.; Smeland, Olav Bjerkehagen; O'Connell, Kevin; Elvsåshagen, Torbjørn; Winterton, Adriano; Quintana, Daniel; Hindley, Guy Frederick Lanyon; Werner, Maren Caroline Frogner; Djurovic, Srdjan; Dale, Anders Martin; Lagerberg, Trine Vik; Steen, Nils Eiel; Andreassen, Ole Andreas (Journal article; Peer reviewed, 2021)Clinical and epidemiological evidence suggest that loneliness is associated with severe mental disorders (SMDs) and increases the risk of cardiovascular disease (CVD). However, the mechanisms underlying the relationship ... -
Polygenic overlap between C-reactive protein, plasma lipids, and Alzheimer disease
Desikan, Rahul S.; Schork, Andrew J.; Wang, Yunpeng; Thompson, Wesley K.; Dehghan, Abbas; Ridker, Paul M.; Chasman, Daniel I.; McEvoy, Linda K.; Holland, Dominic; Chen, Chi-Hua; Karow, David S.; Brewer, James B.; Hess, Christopher P.; Williams, Julie; Sims, Rebecca; O'Donovan, Michael C.; Choi, Seung Hoan; Bis, Joshua C.; Ikram, M. Arfan; Gudnason, Vilmundur; DeStefano, Anita L.; Van Der Lee, Sven J.; Psaty, Bruce M.; Van Duijn, Cornelia M.; Launer, Lenore; Seshadri, Sudha; Pericak-Vance, Margaret A.; Mayeux, Richard; Haines, Jonathan L.; Farrer, Lindsay A.; Hardy, John; Ulstein, Ingun; Aarsland, Dag; Fladby, Tormod; White, Linda; Sando, Sigrid Botne; Rongve, Arvid; Witoelar, Aree; Djurovic, Srdjan; Hyman, Bradley T.; Snædal, Jon; Steinberg, Stacy; Stefansson, Hreinn; Stefánsson, Kári; Schellenberg, Gerard D.; Andreassen, Ole Andreas; Dale, Anders (Peer reviewed; Journal article, 2015-06)Background—Epidemiological findings suggest a relationship between Alzheimer disease (AD), inflammation, and dyslipidemia, although the nature of this relationship is not well understood. We investigated whether this ... -
Polygenic scores for schizophrenia and general cognitive ability: associations with six cognitive domains, premorbid intelligence, and cognitive composite score in individuals with a psychotic disorder and in healthy controls
Engen, Magnus Johan; Lyngstad, Siv Hege; Ueland, Torill; Simonsen, Carmen Elisabeth; Vaskinn, Anja; Smeland, Olav Bjerkehagen; Bettella, Francesco; Lagerberg, Trine Vik; Djurovic, Srdjan; Andreassen, Ole Andreas; Melle, Ingrid (Journal article; Peer reviewed, 2020-11)Cognitive impairments are considered core features in schizophrenia and other psychotic disorders. Cognitive impairments are, to a lesser degree, also documented in healthy first-degree relatives. Although recent studies ... -
Prospective cohort study of early biosignatures of response to lithium in bipolar-I-disorders: overview of the H2020-funded R-LiNK initiative
Scott, Jan; Hidalgo-Mazzei, Diego; Strawbridge, Rebecca; Young, Allan; Resche-Rigon, Matthieu; Etain, Bruno; Andreassen, Ole Andreas; Bauer, Michael; Bennabi, Djamila; Blamire, Andrew M.; Boumezbeur, Fawzi; Brambilla, Paolo; Cattane, Nadia; Cattaneo, Annamaria; Chupin, Marie; Coello, Klara; Cointepas, Yann; Colom, Francesc; Cousins, David A.; Dubertret, Caroline; Duchesnay, Edouard; Ferro, Adele; Garcia-Estela, Aitana; Goikolea, Jose; Grigis, Antoine; Haffen, Emmanuel; Høegh, Margrethe Collier; Jakobsen, Petter; Kalman, Janos L.; Kessing, Lars V.; Klohn-Saghatolislam, Farah; Lagerberg, Trine Vik; Landén, Mikael; Lewitzka, Ute; Lutticke, Ashley; Mazer, Nicolas; Mazzelli, Monica; Mora, Cristina; Muller, Thorsten; Mur-Mila, Estanislao; Ødegaard, Ketil Joachim; Oltedal, Leif; Pålsson, Erik; Papadopoulos Orfanos, Dimitri; Papiol, Sergi; Perez-Sola, Victor; Reif, Andreas; Ritter, Philipp; Rossi, Roberto; Schulze, Thomas; Senner, Fanny; Smith, Fiona E.; Squarcina, Letizia; Steen, Nils Eiel; Thelwall, Pete E.; Varo, Cristina; Vieta, Eduard; Vinberg, Maj; Wessa, Michele; Westlye, Lars Tjelta; Bellivier, Frank (Peer reviewed; Journal article, 2019-09-25)Background Lithium is recommended as a first line treatment for bipolar disorders. However, only 30% of patients show an optimal outcome and variability in lithium response and tolerability is poorly understood. It remains ... -
Recently evolved human-specific methylated regions are enriched in schizophrenia signals
Banerjee, Niladri; Polushina, Tatiana; Bettella, Francesco; Giddaluru, Sudheer; Steen, Vidar Martin; Andreassen, Ole Andreas; Le Hellard, Stephanie (Peer reviewed; Journal article, 2018)Background: One explanation for the persistence of schizophrenia despite the reduced fertility of patients is that it is a by-product of recent human evolution. This hypothesis is supported by evidence suggesting that ... -
Study of 300,486 individuals identifies 148 independent genetic loci influencing general cognitive function
Davies, Gail; Lam, Max; Harris, Sarah E.; Trampush, Joey W.; Luciano, Michelle; Hill, W. David; Hagenaars, Saskia P.; Ritchie, Stuart J.; Marioni, Riccardo E.; Fawns-Ritchie, Chloe; Liewald, David C.M.; Okely, Judith A.; Ahola-Olli, Ari V.; Barnes, Catriona L.K.; Bertram, Lars; Bis, Joshua C.; Burdick, Katherine E.; Christoforou, Andrea; Derosse, Pamela; Djurovic, Srdjan; Espeseth, Thomas; Giakoumaki, Stella; Giddaluru, Sudheer; Gustavson, Daniel E.; Hayward, Caroline; Hofer, Edith; Ikram, M. Arfan; Karlsson, Robert; Knowles, Emma; Lahti, Jari; Leber, Markus; Li, Shuo; Mather, Karen A.; Melle, Ingrid; Morris, Derek; Oldmeadow, Christopher; Palviainen, Teemu; Payton, Antony; Pazoki, Raha; Petrovic, Katja; Reynolds, Chandra A.; Sargurupremraj, Muralidharan; Scholz, Markus; Smith, Jennifer A.; Smith, Albert V.; Terzikhan, Natalie; Thalamuthu, Anbupalam; Trompet, Stella; van der Lee, Sven J.; Ware, Erin B.; Windham, B. Gwen; Wright, Margaret J.; Yang, Jingyun; Yu, Jin; Ames, David; Amin, Najaf; Amouyel, Philippe; Andreassen, Ole Andreas; Armstrong, Nicola J.; Assareh, Amelia A; Attia, John R.; Attix, Deborah; Avramopoulos, Dimitrios; Bennett, David A.; Böhmer, Anne C.; Boyle, Patricia A.; Brodaty, Henry; Campbell, Harry; Cannon, Tyrone D.; Cirulli, Elizabeth T.; Congdon, Eliza; Conley, Emily Drabant; Corley, Janie; Cox, Simon R.; Dale, Anders; Dehghan, Abbas; Dick, Danielle; Dickinson, Dwight; Eriksson, Johan G.; Evangelou, Evangelos; Faul, Jessica D.; Ford, Ian; Freimer, Nelson A.; Gao, He; Giegling, Ina; Gillespie, Nathan A.; Gordon, Scott D.; Gottesman, Rebecca F.; Griswold, Michael E.; Gudnason, Vilmundur; Harris, Tamara B.; Hartmann, Annette M.; Hatzimanolis, Alex; Heiss, Gerardo; Holliday, Elizabeth G.; Joshi, Peter K.; Kähönen, Mika; Kardia, Sharon L.R.; Karlsson, Ida; Kleineidam, Luca; Knopman, David S.; Kochan, Nicole A.; Konte, Bettina; Kwok, John B.; Le Hellard, Stephanie; Lee, Teresa; Lehtimäki, Terho; Li, Shu-Chen; Liu, Tian; Koini, Marisa; London, Edythe; Longstreth, Will T.; Lopez, Oscar L.; Loukola, Anu; Luck, Tobias; Lundervold, Astri; Lundquist, Anders; Lyytikäinen, Leo-Pekka; Martin, Nicholas G.; Montgomery, Grant W.; Murray, Alison D.; Need, Anna C.; Noordam, Raymond; Nyberg, Lars; Ollier, William; Papenberg, Göran; Pattie, Alison; Polasek, Ozren; Poldrack, Russell A.; Psaty, Bruce M.; Reppermund, Simone; Riedel-Heller, Steffi G.; Rose, Richard J.; Rotter, Jerome I.; Roussos, Panos; Rovio, Suvi P.; Saba, Yasaman; Sabb, Fred W.; Sachdev, Perminder S.; Satizabal, Claudia L.; Schmid, Matthias; Scott, Rodney J.; Scult, Matthew A.; Simino, Jeannette; Slagboom, P. Eline; Smyrnis, Nikolaos; Soumaré, Aïcha; Stefanis, Nikos C.; Stott, David J.; Straub, Richard E.; Sundet, Kjetil Søren; Taylor, Adele M.; Taylor, Kent D.; Tzoulaki, Ioanna; Tzourio, Christophe; Uitterlinden, André; Vitart, Veronique; Voineskos, Aristotle N.; Kaprio, Jaakko; Wagner, Michael; Wagner, Holger; Weinhold, Leonie; Wen, K. Hoyan; Widén, Elisabeth; Yang, Qiong; Zhao, Wei; Adams, Hieab H.H.; Arking, Dan E.; Bilder, Robert M.; Bitsios, Panos; Boerwinkle, Eric; Chiba-Falek, Ornit; Corvin, Aiden; De Jager, Philip L.; Debette, Stéphanie; Donohoe, Gary; Elliott, Paul; Fitzpatrick, Annette L.; Gill, Michael; Glahn, David C.; Hägg, Sara; Hansell, Narelle K.; Hariri, Ahmad; Ikram, M. Kamran; Jukema, J. Wouter; Vuoksimaa, Eero; Keller, Matthew C.; Kremen, William S.; Launer, Lenore; Lindenberger, Ulman; Palotie, Aarno; Pedersen, Nancy L.; Pendleton, Neil; Porteous, David J.; Räikkönen, Katri; Raitakari, Olli T.; Ramirez, Alfredo; Reinvang, Ivar; Rudan, Igor; Rujescu, Dan; Schmidt, Reinhold; Schmidt, Helena; Schofield, Peter W.; Schofield, Peter R.; Starr, John M.; Steen, Vidar Martin; Trollor, Julian N.; Turner, Steven T.; Van Duijn, Cornelia M.; Villringer, Arno; Weinberger, Daniel R.; Weir, David R.; Wilson, James F.; Malhotra, Anil; McIntosh, Andrew M.; Gale, Catharine R.; Seshadri, Sudha; Mosley, Thomas H.; Bressler, Jan; Lencz, Todd; Deary, Ian J. (Peer reviewed; Journal article, 2018)General cognitive function is a prominent and relatively stable human trait that is associated with many important life outcomes. We combine cognitive and genetic data from the CHARGE and COGENT consortia, and UK Biobank ... -
A study of TNF pathway activation in schizophrenia and bipolar disorder in plasma and brain tissue
Hoseth, Eva Zsuzsanna; Ueland, Thor; Dieset, Ingrid; Birnbaum, Rebecca; Shin, Joo Heon; Kleinman, Joel Edward; Hyde, Thomas Michael; Mørch, Ragni Helene; Hope, Sigrun; Lekva, Tove; Abraityte, Judita Aurelija; Michelsen, Annika; Melle, Ingrid; Westlye, Lars Tjelta; Ueland, Torill; Djurovic, Srdjan; Aukrust, Pål; Weinberger, Daniel R.; Andreassen, Ole Andreas (Peer reviewed; Journal article, 2017-07)Objective: A proinflammatory imbalance in the tumor necrosis factor (TNF) system may contribute to the pathogenesis of schizophrenia (SCZ) and bipolar disorders (BDs) and related comorbidities. We investigated the relative ... -
The study protocol of the Norwegian randomized controlled trial of electroconvulsive therapy in treatment resistant depression in bipolar disorder
Kessler, Ute; Vaaler, Arne E.; Schøyen, Helle Kristine; Ødegaard, Ketil Joachim; Bergsholm, Per; Andreassen, Ole Andreas; Malt, Ulrik F.; Morken, Gunnar (Peer reviewed; Journal article, 2010-02-23)Background The treatment of depressive phases of bipolar disorder is challenging. The effects of the commonly used antidepressants in bipolar depression are questionable. Electroconvulsive therapy is generally considered ... -
Transcriptome analysis reveals disparate expression of inflammation-related miRNAs and their gene targets in iPSC-astrocytes from people with schizophrenia
Akkouh, Ibrahim; Hughes, Timothy; Steen, Vidar Martin; Glover, Joel; Andreassen, Ole Andreas; Djurovic, Srdjan; Szabo, Attila (Journal article; Peer reviewed, 2021)Despite the high heritability of schizophrenia (SCZ), details of its pathophysiology and etiology are still unknown. Recent findings suggest that aberrant inflammatory regulation and microRNAs (miRNAs) are involved. Here ... -
Using iPSC Models to Understand the Role of Estrogen in Neuron–Glia Interactions in Schizophrenia and Bipolar Disorder
de Assis, Denis; Szabo, Attila; Osete, Jordi Requena; Puppo, Francesca; O'Connell, Kevin S.; Akkouh, Ibrahim; Hughes, Timothy; Frei, Evgeniia; Andreassen, Ole Andreas; Djurovic, Srdjan (Journal article; Peer reviewed, 2021)Schizophrenia (SCZ) and bipolar disorder (BIP) are severe mental disorders with a considerable disease burden worldwide due to early age of onset, chronicity, and lack of efficient treatments or prevention strategies. ... -
Vitamin D levels, brain volume, and genetic architecture in patients with psychosis
Berg, Akiah Ottesen; Jørgensen, Kjetil Nordbø; Nerhus, Mari; Athanasiu, Lavinia; Popejoy, Alice; Bettella, Francesco; Norbom, Linn Christin Bonaventure; Gurholt, Tiril Pedersen; Dahl, Sandra Rinne; Andreassen, Ole Andreas; Djurovic, Srdjan; Agartz, Ingrid; Melle, Ingrid (Peer reviewed; Journal article, 2018-08-24)Background: Lower vitamin D levels are found in people with schizophrenia and depressive disorders, and also associated with neuroimaging abnormalities such as reduced brain volume in both animals and humans. Reduced whole ...