• Antidepressive Effectiveness of Amisulpride, Aripiprazole, and Olanzapine in Patients with Schizophrenia Spectrum Disorders: A Secondary Outcome Analysis of a Pragmatic, Randomized Trial (BeSt InTro) 

      Kjelby, Eirik; Gjestad, Rolf; Fathian, Farivar; Sinkeviciute, Igne; Alisauskiene, Renata; Anda, Liss; Løberg, Else-Marie; Reitan, Solveig Klæbo; Joa, Inge; Larsen, Tor Kjetil; Rettenbacher, Maria; Berle, Jan Øystein; Fasmer, Ole Bernt; Kroken, Rune Andreas; Johnsen, Erik (Peer reviewed; Journal article, 2023)
      Background Depressive symptoms are frequent in schizophrenia and associated with a poorer outcome. Currently, the optimal treatment for depressive symptoms in schizophrenia remains undetermined. Amisulpride, aripiprazole, ...
    • Association between C-reactive protein levels and antipsychotic treatment during 12 months follow-up period after acute psychosis 

      Fathian, Farivar; Gjestad, Rolf; Kroken, Rune Andreas; Løberg, Else-Marie; Reitan, Solveig Merete Klæbo; Fleichhacker, W. Wolfgang; Rettenbacher, Maria; Larsen, Tor Ketil; Joa, Inge; Stabell, Lena Antonsen; Kjelby, Eirik; Sinkevicute, Igne; Alisauskiene, Renata; Steen, Vidar Martin; Johnsen, Erik (Peer reviewed; Journal article, 2022)
      Background - A potential role of inflammatory pathways in the pathology of schizophrenia has been suggested for at least a subgroup of patients. Elevated levels of the inflammatory marker C-reactive protein (CRP) have been ...
    • Clinical insight among persons with schizophrenia spectrum disorders treated with amisulpride, aripiprazole or olanzapine: a semi-randomised trial 

      Stabell, Lena Antonsen; Johnsen, Erik; Kroken, Rune Andreas; Løberg, Else-Marie; Blindheim, Anne Alnes; Joa, Inge; Reitan, Solveig Klæbo; Rettenbacher, M.; Munk-Jørgensen, P.; Gjestad, Rolf (Peer reviewed; Journal article, 2023)
      Background Antipsychotic treatment may improve clinical insight. However, previous studies have reported inconclusive findings on whether antipsychotics improve insight over and above the reduction in symptoms of ...
    • Differential Effectiveness of Atypical Antipsychotics on Hallucinations: A Pragmatic Randomized Controlled Trial 

      Sinkeviciute, Igne; Hugdahl, Kenneth Jan; Bartz-Johannessen, Christoffer; Kroken, Rune Andreas; Løberg, Else-Marie; Kjelby, Eirik; Rettenbacher, maria; Joa, Inge; Reitan, Solveig Merete Klæbo; Alisauskiene, Renata; Fathian, Farivar; Johnsen, Erik (Peer reviewed; Journal article, 2021)
      Background Most studies investigating antipsychotic effectiveness report either total psychopathology or symptom cluster findings. Studies focusing on a separate symptom, such as hallucinations, a hallmark symptom in ...
    • Does drug use affect the efficacy of amisulpride, aripiprazole and olanzapine in patients with schizophrenia spectrum disorders? Results from a pragmatic, randomised study 

      Alisauskiene, Renata; Johnsen, Erik; Gjestad, Rolf; Kroken, Rune Andreas; Kjelby, Eirik; Sinkeviciute, Igne; Fathian, Farivar; Joa, Inge; Reitan, Solveig Klæbo; Rettenbacher, Maria; Løberg, Else-Marie (Peer reviewed; Journal article, 2023)
      Objectives Drug use is prevalent in patients with schizophrenia spectrum disorders (SSD) but there is limited knowledge about the influence of drug use on the effectiveness of antipsychotic medication. This secondary ...
    • Increased circulating IL-18 levels in severe mental disorders indicate systemic inflammasome activation 

      Szabo, Attila; O’Connell, Kevin; Ueland, Thor; Ahmed, Mashhood Sheikh; Agartz, Ingrid; Andreou, Dimitrios; Aukrust, Pål; Boye, Birgitte; Bøen, Erlend; Drange, Ole Kristian; Elvsåshagen, Torbjørn; Engh, John Abel; 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; Auten Weibell, Melissa; Westlye, Lars Tjelta; Steen, Nils Eiel; Andreassen, Ole; Djurovic, Srdjan (Peer reviewed; Journal article, 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 ...
    • 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 (Peer reviewed; Journal article, 2021)
      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 ...
    • Inflammatory markers are altered in severe mental disorders independent of comorbid cardiometabolic disease risk factors 

      Mørch, Ragni Helene; Dieset, Ingrid; Færden, Ann; Reponen, Elina Johanna; Hope, Sigrun; Hoseth, Eva Zsuzsanna; Gardsjord, Erlend Strand; Aas, Monica; Iversen, Trude; Joa, Inge; Morken, Gunnar; Agartz, Ingrid; Melle, Ingrid; Aukrust, Pål; Djurovic, Srdjan; Ueland, Thor; Andreassen, Ole Andreas (Peer reviewed; Journal article, 2019)
      Background. Inflammation and immune activation have been implicated in the pathogenesis of severe mental disorders and cardiovascular disease (CVD). Despite high level of comorbidity, many studies of the immune system in ...
    • Lower circulating neuron-specific enolase concentrations in adults and adolescents with severe mental illness 

      Andreou, Dimitrios; Steen, Nils Eiel; Jørgensen, Kjetil Nordbø; Smelror, Runar Elle; Wedervang-Resell, Kirsten; Nerland, Stener; Westlye, Lars Tjelta; Nærland, Terje; Myhre, Anne Margrethe; Joa, Inge; Reitan, Solveig Merete Klæbo; Vaaler, Arne; Morken, Gunnar; Bøen, Erlend; Elvsåshagen, Torbjørn; Boye, Birgitte; Malt, Ulrik Fredrik; Aukrust, Pål; Skrede, Silje; Kroken, Rune Andreas; Johnsen, Erik; Djurovic, Srdjan; Andreassen, Ole; Ueland, Thor; Agartz, Ingrid (Peer reviewed; Journal article, 2021)
      Background Both neurodegenerative and neurodevelopmental abnormalities have been suggested to be part of the etiopathology of severe mental illness (SMI). Neuron-specific enolase (NSE), mainly located in the neuronal ...
    • Mapping genomic loci implicates genes and synaptic biology in schizophrenia 

      Trubetskoy, Vassily; Pardiñas, Antonio F.; Qi, Ting; Panagiotaropoulou, Georgia; Awasthi, Swapnil; Bigdeli, Tim B.; Bryois, Julien; Chen, Chia-Yen; Dennison, Charlotte A.; Hall, Lynsey S.; Lam, Max; Watanabe, Kyoko; Frei, Oleksandr; Ge, Tian; Harwood, Janet C.; Koopmans, Frank; Magnusson, Sigurdur; Richards, Alexander L.; Sidorenko, Julia; Wu, Yang; Zeng, Jian; Grove, Jakob; Kim, Minsoo; Li, Zhiqiang; Voloudakis, Georgios; Zhang, Wen; Adams, Mark; Agartz, Ingrid; Atkinson, Elizabeth G.; Agerbo, Esben; Al Eissa, Mariam; Albus, Margot; Alexander, Madeline; Alizadeh, Behrooz Z.; Alptekin, Köksal; Als, Thomas D.; Amin, Farooq; Arolt, Volker; Arrojo, Manuel; Athanasiu, Lavinia; Azevedo, Maria Helena; Bacanu, Silviu A.; Bass, Nicholas J.; Begemann, Martin; Belliveau, Richard A.; Bene, Judit; Benyamin, Beben; Bergen, Sarah E.; Blasi, Giuseppe; Bobes, Julio; Bonassi, Stefano; Braun, Alice; Bressan, Rodrigo Affonseca; Bromet, Evelyn J.; Bruggeman, Richard; Buckley, Peter F.; Buckner, Randy L.; Bybjerg-Grauholm, Jonas; Cahn, Wiepke; Cairns, Murray J.; Calkins, Monica E.; Carr, Vaughan J.; Castle, David; Catts, Stanley V.; Chambert, Kimberley D.; Chan, Raymond C K; Chaumette, Boris; Cheng, Wei; Cheung, Eric F C; Chong, Siow Ann; Cohen, David; Consoli, Angèle; Cordeiro, Quirino; Costas, Javier; Curtis, Charles; Davidson, Michael; Davis, Kenneth L.; de Haan, Lieuwe; Degenhardt, Franziska; DeLisi, Lynn E.; Demontis, Ditte; Dickerson, Faith; Dikeos, Dimitris; Dinan, Timothy; Djurovic, Srdjan; Duan, Jubao; Ducci, Giuseppe; Dudbridge, Frank; Eriksson, Johan G.; Fañanás, Lourdes; Faraone, Stephen; Fiorentino, Alessia; Forstner, Andreas; Frank, Josef; Freimer, Nelson B.; Fromer, Menachem; Frustaci, Alessandra; Gadelha, Ary; Genovese, Giulio; Gershon, Elliot S.; Giannitelli, Marianna; Giegling, Ina; Giusti-Rodríguez, Paola; Godard, Stephanie; Goldstein, Jacqueline I.; González Peñas, Javier; González-Pinto, Ana; Gopal, Srihari; Gratten, Jacob; Green, Michael F.; Greenwood, Tiffany A.; Guillin, Olivier; Gülöksüz, Sinan; Gur, Raquel E.; Gur, Ruben C.; Gutiérrez, Blanca; Hahn, Eric; Hakonarson, Hakon; Haroutunian, Vahram; Hartmann, Annette M.; Harvey, Carol; Hayward, Caroline; Henskens, Frans A.; Herms, Stefan; Hoffmann, Per; Howrigan, Daniel P.; Ikeda, Masashi; Iyegbe, Conrad; Joa, Inge; Julià, Antonio; Kähler, Anna Katarina; Kam-Thong, Tony; Kamatani, Yoichiro; Karachanak-Yankova, Sena; Kebir, Oussama; Keller, Matthew C.; Kelly, Brian J.; Khrunin, Andrey; Kim, Sung-Wan; Klovins, Janis; Kondratiev, Nikolay; Konte, Bettina; Kraft, Julia; Kubo, Michiaki; Kučinskas, Vaidutis; Kučinskiene, Zita Ausrele; Kusumawardhani, Agung; Kuzelova-Ptackova, Hana; Landi, Stefano; Lazzeroni, Laura C.; Lee, Phil H.; Legge, Sophie E.; Lehrer, Douglas S.; Lencer, Rebecca; Lerer, Bernard; Li, Miaoxin; Lieberman, Jeffrey; Light, Gregory A.; Limborska, Svetlana; Liu, Chih-Min; Lönnqvist, Jouko; Loughland, Carmel M.; Lubinski, Jan; Luykx, Jurjen J.; Lynham, Amy; Macek, Milan; Mackinnon, Andrew; Magnusson, Patrik K E; Maher, Brion S.; Maier, Wolfgang; Malaspina, Dolores; Mallet, Jacques; Marder, Stephen R.; Marsal, Sara; Martin, Alicia R.; Martorell, Lourdes; Mattheisen, Manuel; McCarley, Robert W.; McDonald, Colm; McGrath, John J.; Medeiros, Helena; Meier, Sandra; Melegh, Bela; Melle, Ingrid; Mesholam-Gately, Raquelle I.; Metspalu, Andres; Michie, Patricia T.; Milani, Lili; Milanova, Vihra; Mitjans, Marina; Molden, Espen; Molina, Esther; Molto, María Dolores; Mondelli, Valeria; Moreno, Carmen; Morley, Christopher P.; Muntané, Gerard; Murphy, Kieran C.; Myin-Germeys, Inez; Nenadić, Igor; Nestadt, Gerald; Nikitina-Zake, Liene; Noto, Cristiano; Nuechterlein, Keith H.; O'Brien, Niamh Louise; O'Neill, F Anthony; Oh, Sang-Yun; Olincy, Ann; Ota, Vanessa Kiyomi; Pantelis, Christos; Papadimitriou, George N.; Parellada, Mara; Paunio, Tiina; Pellegrino, Renata; Periyasamy, Sathish; Perkins, Diana O.; Pfuhlmann, Bruno; Pietiläinen, Olli; Pimm, Jonathan; Porteous, David; Powell, John; Quattrone, Diego; Quested, Digby; Radant, Allen D.; Rampino, Antonio; Rapaport, Mark H.; Rautanen, Anna; Reichenberg, Abraham; Roe, Cheryl; Roffman, Joshua L.; Roth, Julian; Rothermundt, Matthias; Rutten, Bart P F; Saker-Delye, Safaa; Salomaa, Veikko; Sanjuan, Julio; Santoro, Marcos Leite; Savitz, Adam; Schall, Ulrich; Scott, Rodney J.; Seidman, Larry J.; Sharp, Sally Isabel; Shi, Jianxin; Siever, Larry J.; Sigurdsson, Engilbert; Sim, Kang; Skarabis, Nora; Slominsky, Petr; So, Hon-Cheong; Sobell, Janet L.; Söderman, Erik; Stain, Helen J.; Steen, Nils Eiel; Steixner-Kumar, Agnes A.; Stögmann, Elisabeth; Stone, William S.; Straub, Richard E.; Streit, Fabian; Strengman, Eric; Stroup, T. Scott; Subramaniam, Mythily; Sugar, Catherine A.; Suvisaari, Jaana; Svrakic, Dragan M.; Swerdlow, Neal R.; Szatkiewicz, Jin P.; Ta, Thi Minh Tam; Takahashi, Atsushi; Terao, Chikashi; Thibaut, Florence; Toncheva, Draga; Tooney, Paul A.; Torretta, Silvia; Tosato, Sarah; Tura, Gian Battista; Turetsky, Bruce I.; Üçok, Alp; Vaaler, Arne; van Amelsvoort, Therese; van Winkel, Ruud; Veijola, Juha; Waddington, John; Walter, Henrik; Waterreus, Anna; Webb, Bradley T.; Weiser, Mark; Williams, Nigel M.; Witt, Stephanie H.; Wormley, Brandon K.; Wu, Jing Qin; Xu, Zhida; Yolken, Robert; Zai, Clement C.; Zhou, Wei; Zhu, Feng; Zimprich, Fritz; Atbaşoğlu, Eşref Cem; Ayub, Muhammad; Benner, Christian; Bertolino, Alessandro; Black, Donald W.; Bray, Nicholas J.; Breen, Gerome; Buccola, Nancy G.; Byerley, William F.; Chen, Wei J.; Cloninger, C Robert; Crespo-Facorro, Benedicto; Donohoe, Gary; Freedman, Robert; Galletly, Cherrie; Gandal, Michael J.; Gennarelli, Massimo; Hougaard, David M.; Hwu, Hai-Gwo; Jablensky, Assen V.; McCarroll, Steven A.; Moran, Jennifer L.; Mors, Ole; Mortensen, Preben B.; Müller-Myhsok, Bertram; Neil, Amanda L.; Nordentoft, Merete; Pato, Michele T.; Petryshen, Tracey L.; Pirinen, Matti; Pulver, Ann E.; Schulze, Thomas G.; Silverman, Jeremy M.; Smoller, Jordan W.; Stahl, Eli A.; Tsuang, Debby W.; Vilella, Elisabet; Wang, Shi-Heng; Xu, Shuhua; Adolfsson, Rolf; Arango, Celso; Baune, Bernhard T.; Belangero, Sintia Iole; Børglum, Anders D.; Braff, David; Bramon, Elvira; Buxbaum, Joseph D.; Campion, Dominique; Cervilla, Jorge A.; Cichon, Sven; Collier, David A.; Corvin, Aiden; Curtis, David; Forti, Marta Di; Domenici, Enrico; Ehrenreich, Hannelore; Escott-Price, Valentina; Esko, Tõnu; Fanous, Ayman H.; Gareeva, Anna; Gawlik, Micha; Gejman, Pablo V.; Gill, Michael; Glatt, Stephen J.; Golimbet, Vera; Hong, Kyung Sue; Hultman, Christina M.; Hyman, Steven E.; Iwata, Nakao; Jönsson, Erik Gunnar; Kahn, René S; Kennedy, James L.; Khusnutdinova, Elza; Kirov, George; Knowles, James A.; Krebs, Marie-Odile; Laurent-Levinson, Claudine; Lee, Jimmy; Lencz, Todd; Levinson, Douglas F.; Li, Qingqin S.; Liu, Jianjun; Malhotra, Anil K.; Malhotra, Dheeraj; McIntosh, Andrew; McQuillin, Andrew; Menezes, Paulo R.; Morgan, Vera A.; Morris, Derek W.; Mowry, Bryan J.; Murray, Robin M.; Nimgaonkar, Vishwajit; Nöthen, Markus M.; Ophoff, Roel A.; Paciga, Sara A.; Palotie, Aarno; Pato, Carlos N.; Qin, Shengying; Rietschel, Marcella; Riley, Brien P.; Rivera, Margarita; Rujescu, Dan; Saka, Meram C.; Sanders, Alan R.; Schwab, Sibylle G.; Serretti, Alessandro; Sham, Pak C.; Shi, Yongyong; St Clair, David; Stefánsson, Hreinn; Stefansson, Kari; Tsuang, Ming T.; van Os, Jim; Vawter, Marquis P.; Weinberger, Daniel R.; Werge, Thomas; Wildenauer, Dieter B.; Yu, Xin; Yue, Weihua; Holmans, Peter A.; Pocklington, Andrew J.; Roussos, Panos; Vassos, Evangelos; Verhage, Matthijs; Visscher, Peter M.; Yang, Jian; Posthuma, Danielle; Andreassen, Ole; Kendler, Kenneth S.; Owen, Michael J.; Wray, Naomi R.; Daly, Mark J.; Huang, Hailiang; Neale, Benjamin M.; Sullivan, Patrick F.; Ripke, Stephan; Walters, James T R; O'Donovan, Michael C. (Peer reviewed; Journal article, 2022)
      Schizophrenia has a heritability of 60–80%1, much of which is attributable to common risk alleles. Here, in a two-stage genome-wide association study of up to 76,755 individuals with schizophrenia and 243,649 control ...
    • Obsessive-compulsive disorder (OCD) in patients with first- episode psychosis (FEP): A prospective study 

      Hagen, Kristen; Solem, Stian; Larsen, Tor Ketil; Joa, Inge; Kvale, Gerd; Hansen, Bjarne (Journal article; Peer reviewed, 2014)
    • Plasma Levels of the Cytokines B Cell-Activating Factor (BAFF) and A Proliferation-Inducing Ligand (APRIL) in Schizophrenia, Bipolar, and Major Depressive Disorder: A Cross Sectional, Multisite Study 

      Engh, John; Ueland, Thor; Agartz, Ingrid; Andreou, Dimitrios; Aukrust, Pål; Boye, Birgitte; Bøen, Erlend; Drange, Ole Kristian; Elvsåshagen, Torbjørn; 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; Wedervang-Resell, Kirsten; Weibell, Melissa; Westlye, Lars Tjelta; Djurovic, Srdjan; Steen, Nils Eiel; Andreassen, Ole (Peer reviewed; Journal article, 2021)
      Background Immune dysfunction has been implicated in the pathogenesis of schizophrenia and other nonaffective psychosis (SCZ), bipolar spectrum disorder (BIP) and major depressive disorder (MDD). The cytokines B cell-activating ...
    • Prevalence and clinical characteristics of patients with obsessive-compulsive disorder in first-episode psychosis 

      Hagen, Kristen; Hansen, Bjarne; Joa, Inge; Larsen, Tor Ketil (Journal article; Peer reviewed, 2013)
      Background: Obsessive-compulsive disorder (OCD) in patients with psychotic disorders has been reported to be a frequent co-morbid disorder in patients with psychotic disorders. The aim of the study determine the prevalence ...
    • Systemic Cell Adhesion Molecules in Severe Mental Illness: Potential Role of Intercellular CAM-1 in Linking Peripheral and Neuroinflammation 

      Sheikh, Mashhood Ahmed; O'Connell, Kevin Sean; Lekva, Tove; Szabo, Attila; Akkouh, Ibrahim Ahmed; Osete, Jordi Requena; Agartz, Ingrid; Engh, John; Andreou, Dimitrios; Boye, Birgitte; Bøen, Erlend; Elvsåshagen, Torbjørn; Hope, Sigrun; Werner, Maren Caroline Frogner; Joa, Inge; Johnsen, Erik; Kroken, Rune Andreas; Lagerberg, Trine Vik; Melle, Ingrid; Drange, Ole Kristian; Morken, Gunnar; Nærland, Terje; Sørensen, Kjetil; Vaaler, Arne; Weibell, Melissa Anne Elin Authen; Westlye, Lars Tjelta; Aukrust, Pål; Djurovic, Srdjan; Steen, Nils Eiel; Andreassen, Ole; Ueland, Thor (Peer reviewed; Journal article, 2022)
      Background Cell adhesion molecules (CAMs) orchestrate leukocyte trafficking and could link peripheral and neuroinflammation in patients with severe mental illness (SMI), by promoting inflammatory and immune-mediated ...