• 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 ...
    • 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 ...
    • Characterizing the Genetic Overlap Between Psychiatric Disorders and Sleep-Related Phenotypes 

      O'Connell, Kevin Sean; Frei, Oleksandr; Bahrami, Shahram; Smeland, Olav Bjerkehagen; Bettella, Francesco; Cheng, Weiqiu; Chu, Yunhan; Hindley, Guy; Lin, Aihua; Shadrin, Alexey; Barrett, Elizabeth Ann; Lagerberg, Trine Vik; Steen, Nils Eiel; Dale, Anders M.; Djurovic, Srdjan; Andreassen, Ole A. (Journal article; Peer reviewed, 2021)
      Background: A range of sleep disturbances are commonly experienced by patients with psychiatric disorders, and genome-wide genetic analyses have shown some significant genetic correlations between these traits. Here, we ...
    • Composite immune marker scores associated with severe mental disorders and illness course 

      Ormerod, Monica Bettina E. Greenwood; Ueland, Thor; Werner, Maren Caroline Frogner; Hjell, Gabriela; Rødevand, Linn Nilsen; Sæther, Linn Sofie; Lunding, Synve Hoffart; Johansen, Ingrid Torp; Ueland, Torill; Lagerberg, Trine Vik; Melle, Ingrid; Djurovic, Srdjan; Andreassen, Ole; Steen, Nils Eiel (Journal article; Peer reviewed, 2022)
      Background Low-grade inflammation has been implicated in the pathophysiology of severe mental disorders (SMDs) and a link between immune activation and clinical characteristics is suggested. However, few studies have ...
    • Expression of ANK3 moderates the association between childhood trauma and affective traits in severe mental disorders 

      Aas, Monica; Andreassen, Ole; Gjerstad, Johannes; Rødevand, Linn; Hjell, Gabriela; Johansen, Ingrid Torp; Lunding, Synve Hoffart; Ormerod, Monica Bettina E. Greenwood; Lagerberg, Trine Vik; Steen, Nils Eiel; Djurovic, Srdjan; Akkouh, Ibrahim Ahmed (Journal article; Peer reviewed, 2023)
      Exposure to early life trauma increases the risk of psychopathology later in life. Here we investigated if ANK3 mRNA levels influence the relationship between childhood trauma experiences and clinical characteristics in ...
    • Extensive bidirectional genetic overlap between bipolar disorder and cardiovascular disease phenotypes 

      Rødevand, Linn; Bahrami, Shahram; Frei, Oleksandr; Chu, Yunhan; Shadrin, Alexey A.; O'Connell, Kevin S.; Smeland, Olav Bjerkehagen; Elvsåshagen, Torbjørn; Hindley, Guy Frederick Lanyon; Djurovic, Srdjan; Dale, Anders; Lagerberg, Trine Vik; Steen, Nils Eiel; Andreassen, Ole Andreas (Journal article; Peer reviewed, 2021)
      Patients with bipolar disorder (BIP) have a high risk of cardiovascular disease (CVD), despite considerable individual variation. The mechanisms underlying comorbid CVD in BIP remain largely unknown. We investigated polygenic ...
    • The genetic architecture of human brainstem structures and their involvement in common brain disorders 

      Elvsåshagen, Torbjørn; Bahrami, Shahram; van der Meer, Dennis; Agartz, Ingrid; Alnæs, Dag; Barch, Deanna M.; Baur-Streubel, Ramona; Bertolino, Alessandro; Beyer, Mona K.; Blasi, Giuseppe; Borgwardt, Stefan; Boye, Birgitte; Buitelaar, Jan; Bøen, Erlend; Celius, Elisabeth Gulowsen; Cervenka, Simon; Conzelmann, Annette; Coynel, David; di Carlo, Pasquale; Djurovic, Srdjan; Eisenacher, Sarah; Espeseth, Thomas; Fatouros-Bergman, Helena; Flyckt, Lena; Franke, Barbara; Frei, Oleksandr; Gelao, Barbara; Harbo, Hanne Flinstad; Hartman, Catharina A.; Håberg, Asta; Heslenfeld, Dirk; Hoekstra, Pieter J.; Høgestøl, Einar August; Jonassen, Rune; Jönsson, Erik G.; Kirsch, Peter; Kloszewska, Iwona; Lagerberg, Trine Vik; Landrø, Nils Inge; Le Hellard, Stephanie; Lesch, Klaus-Peter; Maglanoc, Luigi Angelo; Malt, Ulrik Fredrik; Mecocci, Patrizia; Melle, Ingrid; Meyer-Lindenberg, Andreas; Moberget, Torgeir; Nordvik, Jan Egil; Nyberg, Lars; O’ Connell, Kevin S.; Oosterlaan, Jaap; Papalino, Marco; Papassotiropoulos, Andreas; Pauli, Paul; Pergola, Giulio; Persson, Karin; de Quervain, Dominique; Reif, Andreas; Rokicki, Jaroslav; Van Rooij, Daan; Shadrin, Alexey A.; Schmidt, André; Schwarz, Emanuel; Selbæk, Geir; Soininen, Hilkka; Sowa, Piotr; Steen, Vidar M.; Tsolaki, Magda; Vellas, Bruno; Wang, Lei; Westman, Eric; Ziegler, Georg C.; Zink, Mathias; Andreassen, Ole Andreas; Westlye, Lars Tjelta; Kaufmann, Tobias (Journal article, 2020)
      Brainstem regions support vital bodily functions, yet their genetic architectures and involvement in common brain disorders remain understudied. Here, using imaging-genetics data from a discovery sample of 27,034 individuals, ...
    • Improvement in verbal learning over the first year of antipsychotic treatment is associated with serum HDL levels in a cohort of first episode psychosis patients 

      Gjerde, Priyanthi Borgen; Simonsen, Carmen Elisabeth; Lagerberg, Trine Vik; Steen, Nils Eiel; Ueland, Torill; Andreassen, Ole Andreas; Steen, Vidar Martin; Melle, Ingrid (Peer reviewed; Journal article, 2019-04-27)
      To investigate whether changes in serum lipids are associated with cognitive performance in first episode psychosis (FEP) patients during their first year of antipsychotic drug treatment. One hundred and thirty-two ...
    • Impulsivity across severe mental disorders: a cross-sectional study of immune markers and psychopharmacotherapy 

      Hjell, Gabriela; Rokicki, Jaroslav; Szabo, Attila; Holst, Rene; Tesli, Natalia; Bell, Christina; Fischer-Vieler, Thomas; Werner, Maren Caroline Frogner; Lunding, Synve Hoffart; Elkjær Greenwood Ormerod, Monica Bettina; Johansen, Ingrid Torp; Djurovic, Srdjan; Ueland, Thor; Andreassen, Ole; Melle, Ingrid; Lagerberg, Trine Vik; Mørch-Johnsen, Lynn Egeland; Steen, Nils Eiel; Haukvik, Unn Kristin Hansen (Journal article; Peer reviewed, 2023)
      Background Impulsivity is a transdiagnostic feature linked to severe clinical expression and a potential target for psychopharmacological strategies. Biological underpinnings are largely unknown, but involvement of ...
    • Increase in serum HDL level is associated with less negative symptoms after one year of antipsychotic treatment in first-episode psychosis 

      Gjerde, Priyanthi Borgen; Dieset, Ingrid; Simonsen, Carmen Elisabeth; Hoseth, Eva Zsuzsanna; Iversen, Trude Seselie Jahr; Lagerberg, Trine Vik; Lyngstad, Siv Hege; Mørch, Ragni Helene; Skrede, Silje; Andreassen, Ole Andreas; Melle, Ingrid; Steen, Vidar Martin (Peer reviewed; Journal article, 2017-07)
      Background A potential link between increase in total cholesterol and triglycerides and clinical improvement has been observed during antipsychotic drug treatment in chronic schizophrenia patients, possibly due to drug ...
    • Increased circulating IL-18 levels in severe mental disorders indicate systemic inflammasome activation 

      Szabo, Attila; O'Connell, Kevin Sean; Ueland, Thor; Sheikh, Mashhood Ahmed; Agartz, Ingrid; Andreou, Dimitrios; Aukrust, Pål; Boye, Birgitte; Bøen, Erlend; Drange, Ole Kristian; Elvsåshagen, Torbjørn; Engh, John; Hope, Sigrun; Høegh, Margrethe Collier; Joa, Inge; Johnsen, Erik; Kroken, Rune Andreas; Lagerberg, Trine Vik; Lekva, Tove; Malt, Ulrik Fredrik; Melle, Ingrid; Morken, Gunnar; Nærland, Terje; Steen, Vidar Martin; Sørensen, Kjetil; Wedervang-Resell, Kirsten; Weibell, Melissa Anne Elin Authen; Westlye, Lars Tjelta; Steen, Nils Eiel; Andreassen, Ole; Djurovic, Srdjan (Journal article; Peer reviewed, 2022)
      Background Schizophrenia (SCZ) and bipolar disorder (BD) are severe mental illnesses (SMI) that are part of a psychosis continuum, and dysregulated innate immune responses have been suggested to be involved in their ...
    • Inflammation and cognition in severe mental illness: patterns of covariation and subgroups 

      Sæther, Linn Sofie; Ueland, Thor; Haatveit, Beathe; Maglanoc, Luigi; Szabo, Attila; Djurovic, Srdjan; Aukrust, Pål; Roelfs, Daniël; Ormerod, Monica Bettina E. Greenwood; Lagerberg, Trine Vik; Steen, Nils Eiel; Melle, Ingrid; Andreassen, Ole; Ueland, Torill (Journal article; Peer reviewed, 2023)
      A potential relationship between dysregulation of immune/inflammatory pathways and cognitive impairment has been suggested in severe mental illnesses (SMI), such as schizophrenia (SZ) and bipolar (BD) spectrum disorders. ...
    • 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 ...