Nils Eiel Steen

• Reponen, Elina Johanna; Tesli, Martin Steen; Dieset, Ingrid; Steen, Nils Eiel; Vedal, Trude Seselie Jahr & Szabo, Attila [Vis alle 12 forfattere av denne artikkelen] (2021). Adiponectin Is Related to Cardiovascular Risk in Severe Mental Illness Independent of Antipsychotic Treatment. Frontiers in Psychiatry. ISSN 1664-0640. doi: 10.3389/fpsyt.2021.623192. Fulltekst i vitenarkiv
• Bahrami, Shahram; Shadrin, Alexey A.; Frei, Oleksandr; O`Connell, Kevin; Bettella, Francesco & Krull, Florian [Vis alle 15 forfattere av denne artikkelen] (2021). Genetic loci shared between major depression and intelligence with mixed directions of effect. Nature Human Behaviour. ISSN 2397-3374. s. 1–9. doi: 10.1038/s41562-020-01031-2.
• Gurholt, Tiril Pedersen; Kaufmann, Tobias; Frei, Oleksandr; Alnæs, Dag; Haukvik, Unn Kristin H. & van der Meer, Dennis [Vis alle 17 forfattere av denne artikkelen] (2021). Population-based body–brain mapping links brain morphology with anthropometrics and body composition. Translational Psychiatry. ISSN 2158-3188. doi: 10.1038/s41398-021-01414-7. Fulltekst i vitenarkiv
• Rødevand, Linn ; Bahrami, Shahram; Frei, Oleksandr; Lin, Aihua; Gani, Osman & Shadrin, Alexey A. [Vis alle 18 forfattere av denne artikkelen] (2021). Polygenic overlap and shared genetic loci between loneliness, severe mental disorders, and cardiovascular disease risk factors suggest shared molecular mechanisms. Translational Psychiatry. ISSN 2158-3188. 11(1). doi: 10.1038/s41398-020-01142-4. Fulltekst i vitenarkiv Vis sammendrag

  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 between loneliness, SMDs, and CVD risk factors remain unknown. Here we explored overlapping genetic architecture and genetic loci shared between SMDs, loneliness, and CVD risk factors. We analyzed large independent genome-wide association study data on schizophrenia (SCZ), bipolar disorder (BD), major depression (MD), loneliness and CVD risk factors using bivariate causal mixture mode (MiXeR), which estimates the total amount of shared variants, and conditional false discovery rate to evaluate overlap in specific loci. We observed substantial genetic overlap between SMDs, loneliness and CVD risk factors, beyond genetic correlation. We identified 149 loci jointly associated with loneliness and SMDs (MD n = 67, SCZ n = 54, and BD n = 28), and 55 distinct loci jointly associated with loneliness and CVD risk factors. A total of 153 novel loneliness loci were found. Most of the shared loci possessed concordant effect directions, suggesting that genetic risk for loneliness may increase the risk of both SMDs and CVD. Functional analyses of the shared loci implicated biological processes related to the brain, metabolic processes, chromatin and immune system. Altogether, the study revealed polygenic overlap between loneliness, SMDs and CVD risk factors, providing new insights into their shared genetic architecture and common genetic mechanisms.

• Bigseth, Therese Torgersen; Fredriksen, Mats; Egeland, Jens; Andersen, Eivind; Andreassen, Ole Andreas & Bang-Kittilsen, Gry [Vis alle 15 forfattere av denne artikkelen] (2021). Elevated levels of soluble urokinase plasminogen activator receptor as a low-grade inflammation marker in schizophrenia: A case-control study. Schizophrenia Research. ISSN 0920-9964. 228, s. 190–192. doi: 10.1016/j.schres.2020.11.051.
• Osete, Jordi Requena; Akkouh, Ibrahim; Reis de Assis, Denis; Szabo, Attila; Frei, Evgeniia & Hughes, Timothy [Vis alle 10 forfattere av denne artikkelen] (2021). Lithium increases mitochondrial respiration in iPSC-derived neural precursor cells from lithium responders. Molecular Psychiatry. ISSN 1359-4184. doi: 10.1038/s41380-021-01164-4. Fulltekst i vitenarkiv
• O'Connell, Kevin S.; Frei, Oleksandr; Bahrami, Shahram; Smeland, Olav B.; Bettella, Francesco & Cheng, Weiqiu [Vis alle 16 forfattere av denne artikkelen] (2021). Characterizing the Genetic Overlap Between Psychiatric Disorders and Sleep-Related Phenotypes. Biological Psychiatry. ISSN 0006-3223. s. 1–11. doi: 10.1016/j.biopsych.2021.07.007.
• Lunding, Synve Hoffart; Simonsen, Carmen Elisabeth; Aas, Monica; Rødevand, Linn ; Werner, Maren Caroline Frogner & Laskemoen, Jannicke Fjæra [Vis alle 13 forfattere av denne artikkelen] (2021). Childhood trauma and cardiometabolic risk in severe mental disorders: The mediating role of cognitive control. European psychiatry. ISSN 0924-9338. 64(1). doi: 10.1192/j.eurpsy.2021.14. Fulltekst i vitenarkiv
• Aas, Monica; Ueland, Torill; Mørch, Ragni Helene; Laskemoen, Jannicke Fjæra; Lunding, Synve Hoffart & Reponen, Elina Johanna [Vis alle 11 forfattere av denne artikkelen] (2021). Physical activity and childhood trauma experiences in patients with schizophrenia or bipolar disorders. World Journal of Biological Psychiatry. ISSN 1562-2975. 22(8), s. 637–645. doi: 10.1080/15622975.2021.1907707. Fulltekst i vitenarkiv
• Hindley, Guy Frederick Lanyon; Bahrami, Shahram; Steen, Nils Eiel; O'Connell, Kevin Sean; Frei, Oleksandr & Shadrin, Alexey [Vis alle 13 forfattere av denne artikkelen] (2021). Characterising the shared genetic determinants of bipolar disorder, schizophrenia and risk-taking. Translational Psychiatry. ISSN 2158-3188. 11:466, s. 1–10. doi: 10.1038/s41398-021-01576-4. Fulltekst i vitenarkiv
• Wiström, Erik D.; O'Connell, Kevin S.; Karadag, Naz; Bahrami, Shahram; Hindley, Guy F. L. & Lin, Aihua [Vis alle 14 forfattere av denne artikkelen] (2021). Genome-wide analysis reveals genetic overlap between alcohol use behaviours, schizophrenia and bipolar disorder and identifies novel shared risk loci. Addiction. ISSN 0965-2140. doi: 10.1111/add.15680.
• Rødevand, Linn ; Bahrami, Shahram; Frei, Oleksandr; Chu, Yunhan; Shadrin, Alexey A. & O'Connell, Kevin S. [Vis alle 14 forfattere av denne artikkelen] (2021). Extensive bidirectional genetic overlap between bipolar disorder and cardiovascular disease phenotypes. Translational Psychiatry. ISSN 2158-3188. 11. doi: 10.1038/s41398-021-01527-z. Fulltekst i vitenarkiv
• Gjerde, Priyanthi Borgen; Simonsen, Carmen E.; Lagerberg, Trine V.; Steen, Nils Eiel; Andreassen, Ole A. & Steen, Vidar M. [Vis alle 7 forfattere av denne artikkelen] (2021). Sex-Specific Effect of Serum Lipids and Body Mass Index on Psychotic Symptoms, a Cross-Sectional Study of First-Episode Psychosis Patients. Frontiers in Psychiatry. ISSN 1664-0640. 12. doi: 10.3389/fpsyt.2021.723158.
• Birkenæs, Viktoria; Elvsåshagen, Torbjørn; Westlye, Lars Tjelta; Høegh, Margrethe Collier; Haram, Marit & Werner, Maren Caroline Frogner [Vis alle 14 forfattere av denne artikkelen] (2021). Telomeres are shorter and associated with number of suicide attempts in affective disorders. Journal of Affective Disorders. ISSN 0165-0327. 295, s. 1032–1039. doi: 10.1016/j.jad.2021.08.135.
• Valstad, Mathias; Roelfs, Daniël; Slapø, Nora B.; Timpe, Clara M. F.; Rai, Ahsan & Matziorinis, Anna Maria [Vis alle 24 forfattere av denne artikkelen] (2021). Evidence for Reduced Long-Term Potentiation-Like Visual Cortical Plasticity in Schizophrenia and Bipolar Disorder. Schizophrenia Bulletin. ISSN 0586-7614. 47(6), s. 1751–1760. doi: 10.1093/schbul/sbab049.
• Fjukstad, Katrine Kveli; Athanasiu, Lavinia; Bahrami, Shahram; O`Connell, Kevin; van der Meer, Dennis & Bettella, Francesco [Vis alle 11 forfattere av denne artikkelen] (2021). Genetic variants associated with cardiometabolic abnormalities during treatment with selective serotonin reuptake inhibitors: a genome-wide association study. The Pharmacogenomics Journal. ISSN 1470-269X. doi: 10.1038/s41397-021-00234-8.
• Beck, Dani; de Lange, Ann-Marie G.; Pedersen, Mads L.; Alnæs, Dag; Maximov, Ivan & Voldsbekk, Irene [Vis alle 18 forfattere av denne artikkelen] (2021). Cardiometabolic risk factors associated with brain age and accelerate brain ageing. Human Brain Mapping. ISSN 1065-9471. s. 1–21. doi: 10.1002/hbm.25680. Fulltekst i vitenarkiv
• Bigseth, Therese Torgersen; Engh, John; Egeland, Jens; Andersen, Eivind; Andreassen, Ole & Bang-Kittilsen, Gry [Vis alle 15 forfattere av denne artikkelen] (2021). Exploring low grade inflammation by soluble urokinase plasminogen activator receptor levels in schizophrenia: a sex-dependent association with depressive symptoms. BMC Psychiatry. ISSN 1471-244X. 21(1), s. 1–10. doi: 10.1186/s12888-021-03522-6. Fulltekst i vitenarkiv
• Andreou, Dimitrios; Steen, Nils Eiel; Jørgensen, Kjetil Nordbø; Smelror, Runar; Wedervang-Resell, Kirsten & Nerland, Stener [Vis alle 25 forfattere av denne artikkelen] (2021). Lower circulating neuron-specific enolase concentrations in adults and adolescents with severe mental illness. Psychological Medicine. ISSN 0033-2917. s. 1–10. doi: 10.1017/S0033291721003056. Fulltekst i vitenarkiv
• Engh, John; Ueland, Thor; Agartz, Ingrid; Andreou, Dimitrios; Aukrust, Pål & Boye, Birgitte [Vis alle 27 forfattere av denne artikkelen] (2021). 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. Schizophrenia Bulletin. ISSN 0586-7614. s. 1–10. doi: 10.1093/schbul/sbab106.
• Aas, Monica; Ueland, Torill; Inova, Amina; Melle, Ingrid; Andreassen, Ole Andreas & Steen, Nils Eiel (2020). Childhood Trauma Is Nominally Associated With Elevated Cortisol Metabolism in Severe Mental Disorder. Frontiers in Psychiatry. ISSN 1664-0640. doi: 10.3389/fpsyt.2020.00391. Fulltekst i vitenarkiv
• Bahrami, Shahram; Steen, Nils Eiel; Shadrin, Alexey A.; O`Connell, Kevin; Frei, Oleksandr & Bettella, Francesco [Vis alle 13 forfattere av denne artikkelen] (2020). Shared genetic loci between body mass index and major psychiatric disorders: A genome-wide association study. JAMA psychiatry. ISSN 2168-6238. 77(5), s. 503–512. doi: 10.1001/jamapsychiatry.2019.4188.
• Benjamin, Silje Beatrice Rognås; Valstad, Mathias; Elvsåshagen, Torbjørn; Jönsson, Erik Gunnar; Moberget, Torgeir & Winterton, Adriano [Vis alle 14 forfattere av denne artikkelen] (2020). Heart rate variability is associated with disease severity in psychosis spectrum disorders. Progress in Neuro-psychopharmacology and Biological Psychiatry. ISSN 0278-5846. 00:110108, s. 1–8. doi: 10.1016/j.pnpbp.2020.110108. Fulltekst i vitenarkiv
• Werner, Maren Caroline Frogner; Wirgenes, Katrine Verena; Haram, Marit; Bettella, Francesco; Lunding, Synve Hoffart & Rødevand, Linn Nilsen [Vis alle 12 forfattere av denne artikkelen] (2020). Indicated association between polygenic risk score and treatment-resistance in a naturalistic sample of patients with schizophrenia spectrum disorders. Schizophrenia Research. ISSN 0920-9964. 218, s. 55–62. doi: 10.1016/j.schres.2020.03.006. Fulltekst i vitenarkiv
• Winterton, Adriano; Rødevand, Linn ; Westlye, Lars Tjelta; Steen, Nils Eiel; Andreassen, Ole Andreas & Quintana, Daniel (2020). Associations of loneliness and social isolation with cardiovascular and metabolic health: A systematic review and meta-analysis protocol. Systematic Reviews. ISSN 2046-4053. 9(1). doi: 10.1186/s13643-020-01369-8. Fulltekst i vitenarkiv
• Hjelseng, Ingrid Varvin; Vaskinn, Anja; Ueland, Torill; Lunding, Synve Hoffart; Reponen, Elina Johanna & Steen, Nils Eiel [Vis alle 8 forfattere av denne artikkelen] (2020). Childhood Trauma Is Associated With Poorer Social Functioning in Severe Mental Disorders Both During an Active Illness Phase and in Remission . Schizophrenia Research. ISSN 0920-9964. doi: 10.1016/j.schres.2020.03.015.
• Hope, Sigrun; Nærland, Terje; Høyland, Anne Lise; Torske, Tonje; Malt, Eva & Abrahamsen, Tore G [Vis alle 16 forfattere av denne artikkelen] (2020). Higher vitamin B12 levels in neurodevelopmental disorders than in healthy controls and schizophrenia A comparison among participants between 2 and 53 years. The FASEB Journal. ISSN 0892-6638. 34(6), s. 8114–8124. doi: 10.1096/fj.201900855RRR.
• Akkouh, Ibrahim; Ueland, Thor; Hansson, Lars ; Inderhaug, Elin; Hughes, Timothy & Steen, Nils Eiel [Vis alle 10 forfattere av denne artikkelen] (2020). Decreased IL-1β-induced CCL20 response in human iPSC-astrocytes in schizophrenia: Potential attenuating effects on recruitment of regulatory T cells. Brain, behavior, and immunity. ISSN 0889-1591. 87, s. 634–644. doi: 10.1016/j.bbi.2020.02.008. Fulltekst i vitenarkiv
• Reponen, Elina Johanna; Dieset, Ingrid; Tesli, Martin Steen; Mørch, Ragni Helene; Aas, Monica & Vedal, Trude Seselie Jahr [Vis alle 18 forfattere av denne artikkelen] (2020). Atherogenic lipid ratios related to myeloperoxidase and C-reactive protein levels in psychotic disorders. Frontiers in Psychiatry. ISSN 1664-0640. 11. doi: 10.3389/fpsyt.2020.00672. Fulltekst i vitenarkiv
• Hjell, Gabriela; Mørch-Johnsen, Lynn; Holst, René; Tesli, Natalia; Bell, Christina & Lunding, Synve Hoffart [Vis alle 13 forfattere av denne artikkelen] (2020). Disentangling the relationship between cholesterol, aggression, and impulsivity in severe mental disorders. Brain and Behavior. ISSN 2162-3279. 10(9). doi: 10.1002/brb3.1751. Fulltekst i vitenarkiv
• Smeland, Olav Bjerkehagen; Shadrin, Alexey A.; Bahrami, Shahram; Broce, Iris J.; Tesli, Martin Steen & Frei, Oleksandr [Vis alle 22 forfattere av denne artikkelen] (2020). Genome-wide Association Analysis of Parkinson’s Disease and Schizophrenia Reveals Shared Genetic Architecture and Identifies Novel Risk Loci. Biological Psychiatry. ISSN 0006-3223. 89(3), s. 227–235. doi: 10.1016/j.biopsych.2020.01.026. Fulltekst i vitenarkiv
• Winterton, Adriano; Westlye, Lars Tjelta; Steen, Nils Eiel; Andreassen, Ole Andreas & Quintana, Daniel (2020). Improving the precision of intranasal oxytocin research. Nature Human Behaviour. ISSN 2397-3374. s. 1–10. doi: 10.1038/s41562-020-00996-4.
• O`Connell, Kevin; Shadrin, Alexey A.; Bahrami, Shahram; Smeland, Olav Bjerkehagen; Bettella, Francesco & Frei, Oleksandr [Vis alle 20 forfattere av denne artikkelen] (2019). Identification of genetic overlap and novel risk loci for attention-deficit/hyperactivity disorder and bipolar disorder. Molecular Psychiatry. ISSN 1359-4184. s. 1–11. doi: 10.1038/s41380-019-0613-z. Fulltekst i vitenarkiv
• Ringen, Petter Andreas; Reponen, Elina Johanna; Vedal, Trude Seselie Jahr; Andreassen, Ole Andreas; Steen, Nils Eiel & Melle, Ingrid (2019). Predictors for antipsychotic dosage change in the first year of treatment in schizophrenia spectrum and bipolar disorders. Frontiers in Psychiatry. ISSN 1664-0640. 10:649, s. 1–8. doi: 10.3389/fpsyt.2019.00649. Fulltekst i vitenarkiv
• Vedal, Trude Seselie Jahr; Steen, Nils Eiel; Birkeland, Kåre I.; Dieset, Ingrid; Reponen, Elina Johanna & Anderssen, Jannicke Fjæra [Vis alle 11 forfattere av denne artikkelen] (2019). Adipokine levels are associated with insulin resistance in antipsychotics users independently of BMI. Psychoneuroendocrinology. ISSN 0306-4530. 103, s. 87–95. doi: 10.1016/j.psyneuen.2019.01.001. Fulltekst i vitenarkiv
• O`Connell, Kevin; Shadrin, Alexey A.; Smeland, Olav Bjerkehagen; Bahrami, Shahram; Frei, Oleksandr & Bettella, Francesco [Vis alle 24 forfattere av denne artikkelen] (2019). Identification of genetic loci shared between ADHD, intelligence and educational attainment . Biological Psychiatry. ISSN 0006-3223. 87(12), s. 1052–1062. doi: 10.1016/j.biopsych.2019.11.015. Fulltekst i vitenarkiv
• Aas, Monica; Elvsåshagen, Torbjørn; Westlye, Lars Tjelta; Kaufmann, Tobias; Athanasiu, Lavinia & Djurovic, Srdjan [Vis alle 12 forfattere av denne artikkelen] (2019). Telomere length is associated with childhood trauma in patients with severe mental disorders. Translational Psychiatry. ISSN 2158-3188. 9. doi: 10.1038/s41398-019-0432-7. Fulltekst i vitenarkiv
• Gjerde, Priyanthi Borgen; Simonsen, Carmen Elisabeth; Lagerberg, Trine Vik; Steen, Nils Eiel; Ueland, Torill & Andreassen, Ole Andreas [Vis alle 8 forfattere av denne artikkelen] (2019). 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. European Archives of Psychiatry and Clinical Neuroscience. ISSN 0940-1334. s. 1–10. doi: 10.1007/s00406-019-01017-w. Fulltekst i vitenarkiv
• Gohar, Sherif Mostafa Mohamed Ahmed; Dieset, Ingrid; Steen, Nils Eiel; Mørch, Ragni Helene; Vedal, Trude Seselie Jahr & Reponen, Elina Johanna [Vis alle 9 forfattere av denne artikkelen] (2019). Association between leptin levels and severity of suicidal behaviour in schizophrenia spectrum disorders. Acta Psychiatrica Scandinavica. ISSN 0001-690X. 139(5), s. 464–471. doi: 10.1111/acps.13019. Fulltekst i vitenarkiv
• Aas, Monica; Pizzagalli, Diego A.; Anderssen, Jannicke Fjæra; Reponen, Elina Johanna; Ueland, Torill & Melle, Ingrid [Vis alle 9 forfattere av denne artikkelen] (2019). Elevated hair cortisol is associated with childhood maltreatment and cognitive impairment in schizophrenia and in bipolar disorders. Schizophrenia Research. ISSN 0920-9964. doi: 10.1016/j.schres.2019.01.011. Fulltekst i vitenarkiv
• Smeland, Olav Bjerkehagen; Bahrami, Shahram; Frei, Oleksandr; Shadrin, Alexey A.; O`Connell, Kevin & Savage, Jeanne E. [Vis alle 15 forfattere av denne artikkelen] (2019). Genome-wide analysis reveals extensive genetic overlap between schizophrenia, bipolar disorder, and intelligence. Molecular Psychiatry. ISSN 1359-4184. s. 1–10. doi: 10.1038/s41380-018-0332-x. Fulltekst i vitenarkiv
• Rødevand, Linn ; Steen, Nils Eiel; Elvsåshagen, Torbjørn; Quintana, Daniel; Reponen, Elina Johanna & Mørch, Ragni Helene [Vis alle 12 forfattere av denne artikkelen] (2019). Cardiovascular risk remains high in schizophrenia with modest improvements in bipolar disorder during past decade. Acta Psychiatrica Scandinavica. ISSN 0001-690X. 139(4), s. 348–360. doi: 10.1111/acps.13008.
• Scott, Jan; Hidalgo-Mazzei, Diego; Strawbridge, Rebecca; Young, Allan; Resche-Rigon, Matthieu & Etain, Bruno [Vis alle 61 forfattere av denne artikkelen] (2019). Prospective cohort study of early biosignatures of response to lithium in bipolar-I-disorders: overview of the H2020-funded R-LiNK initiative. International journal of bipolar disorders. ISSN 2194-7511. 7(1), s. 1–10. doi: 10.1186/s40345-019-0156-x. Fulltekst i vitenarkiv
• Steen, Nils Eiel; Dieset, Ingrid; Hope, Sigrun; Vedal, Trude Seselie Jahr; Smeland, Olav Bjerkehagen & Matson, Wayne [Vis alle 13 forfattere av denne artikkelen] (2019). Metabolic dysfunctions in the kynurenine pathway, noradrenergic and purine metabolism in schizophrenia and bipolar disorders. Psychological Medicine. ISSN 0033-2917. 17(2). doi: 10.1017/S0033291719000400. Fulltekst i vitenarkiv
• Vedal, Trude Seselie Jahr; Steen, Nils Eiel; Birkeland, Kåre I.; Dieset, Ingrid; Reponen, Elina Johanna & Anderssen, Jannicke Fjæra [Vis alle 11 forfattere av denne artikkelen] (2018). Free thyroxine and thyroid-stimulating hormone in severe mental disorders: A naturalistic study with focus on antipsychotic medication. Journal of Psychiatric Research. ISSN 0022-3956. 106, s. 74–81. doi: 10.1016/j.jpsychires.2018.09.014.
• Gjerde, Priyanthi Borgen; Jørgensen, Kjetil Nordbø; Steen, Nils Eiel; Melle, Ingrid; Andreassen, Ole Andreas & Steen, Vidar Martin [Vis alle 7 forfattere av denne artikkelen] (2018). Association between olanzapine treatment and brain cortical thickness and gray/white matter contrast is moderated by cholesterol in psychotic disorders. Psychiatry Research : Neuroimaging. ISSN 0925-4927. 282, s. 55–63. doi: 10.1016/j.pscychresns.2018.10.001.
• Hoseth, Eva Zsuzsanna; Krull, Florian; Dieset, Ingrid; Mørch, Ragni Helene; Hope, Sigrun & Gardsjord, Erlend Strand [Vis alle 14 forfattere av denne artikkelen] (2018). Exploring the Wnt signaling pathway in schizophrenia and bipolar disorder. Translational Psychiatry. ISSN 2158-3188. 8:55, s. 1–10. doi: 10.1038/s41398-018-0102-1. Fulltekst i vitenarkiv
• Hoseth, Eva Zsuzsanna; Krull, Florian; Dieset, Ingrid; Mørch, Ragni Helene; Hope, Sigrun & Gardsjord, Erlend Strand [Vis alle 14 forfattere av denne artikkelen] (2018). Attenuated Notch signaling in schizophrenia and bipolar disorder. Scientific Reports. ISSN 2045-2322. 8:5349, s. 1–8. doi: 10.1038/s41598-018-23703-w. Fulltekst i vitenarkiv
• Aas, Monica; Djurovic, Srdjan; Ueland, Torill; Mørch, Ragni Helene; Anderssen, Jannicke Fjæra & Reponen, Elina Johanna [Vis alle 11 forfattere av denne artikkelen] (2018). The relationship between physical activity, clinical and cognitive characteristics and BDNF mRNA levels in patients with severe mental disorders. World Journal of Biological Psychiatry. ISSN 1562-2975. doi: 10.1080/15622975.2018.1557345.
• Gohar, Sherif Mostafa Mohamed Ahmed; Dieset, Ingrid; Steen, Nils Eiel; Mørch, Ragni Helene; Vedal, Trude Seselie Jahr & Steen, Vidar Martin [Vis alle 8 forfattere av denne artikkelen] (2018). Association between serum lipid levels, osteoprotegerin and depressive symptomatology in psychotic disorders. European Archives of Psychiatry and Clinical Neuroscience. ISSN 0940-1334. 269(7), s. 795–802. doi: 10.1007/s00406-018-0897-z. Fulltekst i vitenarkiv
• Aas, Monica; Dieset, Ingrid; Mørch, Ragni Helene; Steen, Nils Eiel; Hope, Sigrun & Reponen, Elina Johanna [Vis alle 12 forfattere av denne artikkelen] (2018). Reduced brain-derived neurotrophic factor is associated with childhood trauma experiences and number of depressive episodes in severe mental disorders. Schizophrenia Research. ISSN 0920-9964. doi: 10.1016/j.schres.2018.08.007. Fulltekst i vitenarkiv
• Fjukstad, Katrine Kveli; Engum, Anne; Lydersen, Stian; Dieset, Ingrid; Steen, Nils Eiel & Andreassen, Ole Andreas [Vis alle 7 forfattere av denne artikkelen] (2018). Metabolic risk factors in schizophrenia and bipolar disorder: The effect of comedication with selective serotonin reuptake inhibitors and antipsychotics. European psychiatry. ISSN 0924-9338. 48, s. 71–78. doi: 10.1016/j.eurpsy.2017.04.001.
• Iversen, Trude Seselie Jahr; Steen, Nils Eiel; Dieset, Ingrid; Hope, Sigrun; Mørch, Ragni Helene & Gardsjord, Erlend Strand [Vis alle 11 forfattere av denne artikkelen] (2018). Side effect burden of antipsychotic drugs in real life - Impact of gender and polypharmacy. Progress in Neuro-psychopharmacology and Biological Psychiatry. ISSN 0278-5846. 82, s. 263–271. doi: 10.1016/j.pnpbp.2017.11.004.
• Aas, Monica; Dieset, Ingrid; Hope, Sigrun; Hoseth, Eva Zsuzsanna; Mørch, Ragni Helene & Reponen, Elina Johanna [Vis alle 13 forfattere av denne artikkelen] (2017). Childhood maltreatment severity is associated with elevated C-reactive protein and body mass index in adults with schizophrenia and bipolar diagnoses. Brain, behavior, and immunity. ISSN 0889-1591. 65, s. 342–349. doi: 10.1016/j.bbi.2017.06.005. Fulltekst i vitenarkiv
• Aas, Monica; Kauppi, Karolina; Brandt, Christine Lycke; Tesli, Martin Steen; Kaufmann, Tobias & Steen, Nils Eiel [Vis alle 10 forfattere av denne artikkelen] (2017). Childhood trauma is associated with increased brain responses to emotionally negative as compared with positive faces in patients with psychotic disorders. Psychological Medicine. ISSN 0033-2917. 47(4), s. 669–679. doi: 10.1017/S0033291716002762.
• Fjukstad, Katrine Kveli; Engum, Anne; Lydersen, Stian; Dieset, Ingrid; Steen, Nils Eiel & Andreassen, Ole Andreas [Vis alle 7 forfattere av denne artikkelen] (2016). Metabolic abnormalities related to treatment with selective serotonin reuptake inhibitors in patients with schizophrenia or bipolar disorder. Journal of Clinical Psychopharmacology. ISSN 0271-0749. 36(6), s. 615–620. doi: 10.1097/JCP.0000000000000582.
• Tesli, Martin Steen; Wirgenes, Katrine Verena; Hughes, Timothy; Bettella, Francesco; Athanasiu, Lavinia & Hoseth, Eva Zsuzsanna [Vis alle 14 forfattere av denne artikkelen] (2016). VRK2 gene expression in schizophrenia, bipolar disorder and healthy controls. British Journal of Psychiatry. ISSN 0007-1250. 209(2), s. 114–120. doi: 10.1192/bjp.bp.115.161950.
• Steen, Nils Eiel; Aas, Monica; Simonsen, Carmen Elisabeth; Dieset, Ingrid; Tesli, Martin Steen & Nerhus, Mari [Vis alle 13 forfattere av denne artikkelen] (2016). Serum levels of second-generation antipsychotics are associated with cognitive function in psychotic disorders. World Journal of Biological Psychiatry. ISSN 1562-2975. 18(6), s. 471–482. doi: 10.1080/15622975.2016.1245441.
• Steen, Nils Eiel; Aas, Monica; Simonsen, Carmen Elisabeth; Dieset, Ingrid; Tesli, Martin Steen & Nerhus, Mari [Vis alle 13 forfattere av denne artikkelen] (2016). Serum concentrations of mood stabilizers are associated with memory, but not other cognitive domains in psychosis spectrum disorders; explorative analyses in a naturalistic setting. International journal of bipolar disorders. ISSN 2194-7511. 4(24). doi: 10.1186/s40345-016-0067-z. Fulltekst i vitenarkiv
• Quintana, Daniel; Westlye, Lars Tjelta; Kaufmann, Tobias; Rustan, Øyvind; Brandt, Christine Lycke & Haatveit, Beathe Christin [Vis alle 8 forfattere av denne artikkelen] (2015). Reduced heart rate variability in schizophrenia and bipolar disorder compared to healthy controls. Acta Psychiatrica Scandinavica. ISSN 0001-690X. 133(1), s. 44–52. doi: 10.1111/acps.12498.
• Steen, Nils Eiel; Aas, Monica; Simonsen, Carmen Elisabeth; Dieset, Ingrid; Tesli, Martin Steen & Nerhus, Mari [Vis alle 13 forfattere av denne artikkelen] (2015). Serum level of venlafaxine is associated with better memory in psychotic disorders. Schizophrenia Research. ISSN 0920-9964. 169(1-3), s. 386–392. doi: 10.1016/j.schres.2015.10.021.
• Steen, Nils Eiel; Methlie, Paal; Lorentzen, Steinar; Dieset, Ingrid; Aas, Monica & Nerhus, Mari [Vis alle 11 forfattere av denne artikkelen] (2014). Altered systemic cortisol metabolism in bipolar disorder and schizophrenia spectrum disorders. Journal of Psychiatric Research. ISSN 0022-3956. 52(1), s. 57–62. doi: 10.1016/j.jpsychires.2014.01.017.
• Haram, Marit; Tesli, Martin Steen; Dieset, Ingrid; Steen, Nils Eiel; Røssberg, Jan Ivar & Djurovic, Srdjan [Vis alle 8 forfattere av denne artikkelen] (2014). An attempt to identify single nucleotide polymorphisms contributing to possible relationships between personality traits and oxytocin-related genes. Neuropsychobiology. ISSN 0302-282X. 69(1), s. 25–30. doi: 10.1159/000356965.
• Mork, Erlend; Walby, Fredrik A; Harkavy-Friedman, Jill M.; Barrett, Elizabeth Ann; Steen, Nils Eiel & Lorentzen, Steinar [Vis alle 9 forfattere av denne artikkelen] (2013). Clinical characteristics in schizophrenia patients with or without suicide attempts and non-suicidal self-harm - a cross-sectional study. BMC Psychiatry. ISSN 1471-244X. 13. doi: 10.1186/1471-244X-13-255. Fulltekst i vitenarkiv
• Larsson, Sara; Andreassen, Ole Andreas; Aas, Monica; Røssberg, Jan Ivar; Mork, Erlend & Steen, Nils Eiel [Vis alle 12 forfattere av denne artikkelen] (2013). High prevalence of childhood trauma in patients with schizophrenia spectrum and affective disorder. Comprehensive Psychiatry. ISSN 0010-440X. 54(2), s. 123–127. doi: 10.1016/j.comppsych.2012.06.009.
• Hope, Sigrun; Ueland, Thor; Steen, Nils Eiel; Dieset, Ingrid; Lorentzen, Steinar & Berg, Akiah Ottesen [Vis alle 9 forfattere av denne artikkelen] (2013). Interleukin 1 receptor antagonist and soluble tumor necrosis factor receptor 1 are associated with general severity and psychotic symptoms in schizophrenia and bipolar disorder. Schizophrenia Research. ISSN 0920-9964. 145(1-3), s. 36–42. doi: 10.1016/j.schres.2012.12.023.
• Larsson, Sara; Aas, Monica; Klungsøyr, Ole; Agartz, Ingrid; Mork, Erlend & Steen, Nils Eiel [Vis alle 12 forfattere av denne artikkelen] (2013). Patterns of childhood adverse events are associated with clinical characteristics of bipolar disorder. BMC Psychiatry. ISSN 1471-244X. 13. doi: 10.1186/1471-244X-13-97.
• Aas, Monica; Haukvik, Unn Kristin H.; Djurovic, Srdjan; Bergmann, Ørjan; Athanasiu, Lavinia & Tesli, Martin Steen [Vis alle 13 forfattere av denne artikkelen] (2013). BDNF val66met modulates the association between childhood trauma, cognitive and brain abnormalities in psychoses. Progress in Neuro-psychopharmacology and Biological Psychiatry. ISSN 0278-5846. 46, s. 181–188. doi: 10.1016/j.pnpbp.2013.07.008.
• Aas, Monica; Djurovic, Srdjan; Athanasiu, Lavinia; Steen, Nils Eiel; Agartz, Ingrid & Lorentzen, Steinar [Vis alle 9 forfattere av denne artikkelen] (2012). Serotonin Transporter Gene Polymorphism, Childhood Trauma, and Cognition in Patients With Psychotic Disorders. Schizophrenia Bulletin. ISSN 0586-7614. 38(1), s. 15–22. doi: 10.1093/schbul/sbr113.
• Aas, Monica; Steen, Nils Eiel; Agartz, Ingrid; Aminoff, Sofie Ragnhild; Lorentzen, Steinar & Sundet, Kjetil Søren [Vis alle 8 forfattere av denne artikkelen] (2012). Is cognitive impairment following early life stress in severe mental disorders based on specific or general cognitive functioning? Psychiatry Research. ISSN 0165-1781. 198(3), s. 495–500. doi: 10.1016/j.psychres.2011.12.045.
• Steen, Nils Eiel; Lorentzen, Steinar; Barrett, Elisabeth Ann; Lagerberg, Trine Vik; Hope, Sigrun & Larsson, Sara [Vis alle 11 forfattere av denne artikkelen] (2011). Sex-specific cortisol levels in bipolar disorder and schizophrenia during mental challenge - Relationship to clinical characteristics and medication. Progress in Neuro-psychopharmacology and Biological Psychiatry. ISSN 0278-5846. 35(4), s. 1100–1107. doi: 10.1016/j.pnpbp.2011.03.008.
• Hope, Sigrun; Dieset, Ingrid; Agartz, Ingrid; Steen, Nils Eiel; Ueland, Thor & Melle, Ingrid [Vis alle 8 forfattere av denne artikkelen] (2011). Affective symptoms are associated with markers of inflammation and immune activation in bipolar disorders but not in schizophrenia. Journal of Psychiatric Research. ISSN 0022-3956. 45(12), s. 1608–1616. doi: 10.1016/j.jpsychires.2011.08.003.
• Steen, Nils Eiel; Methlie, Paal; Lorentzen, Steinar; Hope, Sigrun; Barrett, Elisabeth Ann & Larsson, Sara [Vis alle 13 forfattere av denne artikkelen] (2011). Increased systemic cortisol metabolism in patients with schizophrenia and bipolar disorder: a mechanism for increased stress vulnerability? Journal of Clinical Psychiatry. ISSN 0160-6689. 72(11), s. 1515–1521. doi: 10.4088/JCP.10m06068yel.
• Hope, Sigrun; Melle, Ingrid; Aukrust, Pål; Agartz, Ingrid; Lorentzen, Steinar & Djurovic, Srdjan [Vis alle 9 forfattere av denne artikkelen] (2010). Osteoprotegerin levels in patients with severe mental disorders. Journal of Psychiatry & Neuroscience. ISSN 1180-4882. 35(5), s. 304–310. doi: 10.1503/jpn.090088.
• Larsson, Sara; Lorentzen, Steinar; Mork, Erlend; Barrett, Elisabeth Ann; Steen, Nils Eiel & Lagerberg, Trine Vik [Vis alle 11 forfattere av denne artikkelen] (2010). Age at onset of bipolar disorder in a Norwegian catchment area sample. Journal of Affective Disorders. ISSN 0165-0327. 124(1-2), s. 174–177. doi: 10.1016/j.jad.2009.10.031.
• Barrett, Elisabeth Ann; Sundet, Kjetil Søren; Færden, Ann; Agartz, Ingrid; Bratlien, Unni & Romm, Kristin Lie [Vis alle 11 forfattere av denne artikkelen] (2010). Suicidality in first episode psychosis is associated with insight and negative beliefs about psychosis. Schizophrenia Research. ISSN 0920-9964. 123(2-3), s. 257–262. doi: 10.1016/j.schres.2010.07.018.
• Barrett, Elizabeth Ann; Sundet, Kjetil Søren; Færden, Ann; Nesvåg, Ragnar; Agartz, Ingrid & Fosse, Roar [Vis alle 10 forfattere av denne artikkelen] (2010). Suicidality before and in the early phases of first episode psychosis. Schizophrenia Research. ISSN 0920-9964. 119(1-3), s. 11–17. doi: 10.1016/j.schres.2010.03.022.
• Steen, Nils Eiel; Tesli, Martin Steen; Kähler, Anna Katarina; Methlie, Paal; Hope, Sigrun & Barrett, Elisabeth Ann [Vis alle 16 forfattere av denne artikkelen] (2010). SRD5A2 is associated with increased cortisol metabolism in schizophrenia spectrum disorders. Progress in Neuro-psychopharmacology and Biological Psychiatry. ISSN 0278-5846. 34(8), s. 1500–1506. doi: 10.1016/j.pnpbp.2010.08.013.
• Hope, Sigrun; Melle, Ingrid; Aukrust, Pål; Steen, Nils Eiel; Birkenæs, Astrid Brate & Lorentzen, Steinar [Vis alle 9 forfattere av denne artikkelen] (2009). Similar immune profile in bipolar disorder and schizophrenia: selective increase in soluble tumor necrosis factor receptor I and von Willebrand factor. Bipolar Disorders. ISSN 1398-5647. 11(7), s. 726–734.

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• Smeland, Olav Bjerkehagen; Bahrami, Shahram; Frei, Oleksandr; Shadrin, Alexey A.; Savage, Jeanne E. & Watanabe, Kyoko [Vis alle 14 forfattere av denne artikkelen] (2018). Genome-wide analysis reveals extensive genetic overlap between schizophrenia, bipolar disorder and intelligence .
• Vedal, Trude Seselie Jahr; Steen, Nils Eiel; Birkeland, Kåre I.; Dieset, Ingrid; Reponen, Elina Johanna & Laskemoen, Jannicke F. [Vis alle 11 forfattere av denne artikkelen] (2018). Response: Are thyroid abnormalities only related to antipsychotic treatment in patients with severe mental disorders? Journal of Psychiatric Research. ISSN 0022-3956. doi: 10.1016/j.jpsychires.2018.11.012.
• Quintana, Daniel; Steen, Nils Eiel & Andreassen, Ole Andreas (2017). The Promise of Intranasal Esketamine as a Novel and Effective Antidepressant. JAMA psychiatry. ISSN 2168-6238. doi: 10.1001/jamapsychiatry.2017.3738.
• Aas, Monica; Djurovic, Srdjan; Athanasiu, Lavinia; Tesli, Martin Steen; Hellvin, Tone & Steen, Nils Eiel [Vis alle 11 forfattere av denne artikkelen] (2012). Interaction between (BDNF) VAL66Met, childhood adverse events and impaired cognition in patients with schizophrenia spectrum and bipolar disorder. Early Intervention in Psychiatry. ISSN 1751-7885. 6, s. 45–45.
• Aas, Monica; Djurovic, Srdjan; Athanasiu, Lavinia; Steen, Nils Eiel; Agartz, Ingrid & Lorentzen, Steinar [Vis alle 9 forfattere av denne artikkelen] (2011). SEROTONIN TRANSPORTER GENE POLYMORPHISMS, CHILDHOOD TRAUMA AND COGNITION IN PATIENTS WITH PSYCHOTIC DISORDERS. Schizophrenia Bulletin. ISSN 0586-7614. 37, s. 80–80.
• Hope, Sigrun; Melle, Ingrid; Ueland, Thor; Lorentzen, Steinar; Steen, Nils Eiel & Berg, Akiah Ottesen [Vis alle 10 forfattere av denne artikkelen] (2011). INTERLEUKIN 1 RECEPTOR ANTAGONIST AND TUMOR NECROSIS FACTOR RECEPTOR 1 ARE ASSOCIATED WITH GENERAL SEVERITY AND PSYCHOTIC SYMPTOMS IN SCHIZOPHRENIA AND BIPOLAR DISORDER. Schizophrenia Bulletin. ISSN 0586-7614. 37, s. 115–116.
• Hope, Sigrun; Melle, Ingrid; Aukrust, Pål; Steen, Nils Eiel; Birkenæs, Astrid Brate & Lorentzen, Steinar [Vis alle 9 forfattere av denne artikkelen] (2009). SIMILAR INFLAMMATORY PROFILE IN BIPOLAR DISORDER AND SCHIZOPHRENIA: SELECTIVE INCREASE IN SOLUBLE TUMOR NECROSIS FACTOR RECEPTOR I AND VON WILLEBRAND FACTOR. Schizophrenia Bulletin. ISSN 0586-7614. 35, s. 235–235.
• Steen, Nils Eiel; Lorentzen, Steinar; Melle, Ingrid; Agartz, Ingrid; Berg, Jens Petter & Andreassen, Ole Andreas (2008). Variation in cortisol levels and relationship to stress in bipolar disorder. Biological Psychiatry. ISSN 0006-3223. 63, s. 142S–142S.

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