Blar i Bergen Open Research Archive på forfatter "Steen, Vidar Martin"
-
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 ... -
Is elevated neutrophil count and neutrophil-to-lymphocyte ratio a cause or consequence of schizophrenia?—a scoping review
Sandberg, Asbjørn Arnesen; Steen, Vidar Martin; Torsvik, Anja (Journal article; Peer reviewed, 2021)Background: Several studies have found an association between elevated neutrophil count or neutrophil-to-lymphocyte ratio (NLR) in peripheral blood from patients with schizophrenia. The etiology behind this effect is ... -
Large-scale genomics unveil polygenic architecture of human cortical surface area
Chen, Chi-Hua; Peng, Qian; Schork, Andrew J.; Lo, Min-Tzu; Fan, Chun-Chieh; Wang, Yunpeng; Desikan, Rahul S.; Bettella, Franscesco; Hagler, Donald J.; Westlye, Lars Tjelta; Kremen, William S.; Jernigan, Terry L.; Le Hellard, Stephanie; Steen, Vidar Martin; Espeseth, Thomas; Huentelman, Matt; Håberg, Asta; Agartz, Ingrid; Djurovic, Srdjan; Andreassen, Ole Andreas; Schork, Nicholas; Dale, Anders (Peer reviewed; Journal article, 2015-07-20)Little is known about how genetic variation contributes to neuroanatomical variability, and whether particular genomic regions comprising genes or evolutionarily conserved elements are enriched for effects that influence ... -
Lifetime Cannabis Use Is Not Associated With Negative Beliefs About Medication in Patients With First Treatment Psychosis
Gjerde, Priyanthi Borgen; Steen, Synne Wollen; Vedal, Trude Seselie Jahr; Steen, Nils Eiel; Reponen, Elina Johanna; Andreassen, Ole; Steen, Vidar Martin; Melle, Ingrid (Journal article; Peer reviewed, 2022)Objective: Cannabis use is common among patients with psychosis, and along with negative beliefs about medication, it has been found to predict poor adherence to antipsychotic drug treatment. Such lack of adherence to ... -
Lipid-Lowering Effects of Tetradecylthioacetic Acid in Antipsychotic-Exposed, Female Rats: Challenges with Long-Term Treatment
Skrede, Silje; Fernø, Johan; Bjørndal, Bodil; Brede, Wenche Rødseth; Bohov, Pavol; Berge, Rolf Kristian; Steen, Vidar Martin (Peer reviewed; Journal article, 2012-11-30)Background: Psychiatric patients often require chronic treatment with antipsychotic drugs, and while rats are frequently used to study antipsychotic-induced metabolic adverse effects, long-term exposure has only partially ... -
LOC689986, a unique gene showing specific expression in restricted areas of the rodent neocortex
Ersland, Kari Merete; Håvik, Bjarte; Rinholm, Johanne Egge; Gundersen, Vidar; Stansberg, Christine; Steen, Vidar Martin (Peer reviewed; Journal article, 2013-07-11)Background: The neocortex is a highly specialised and complex brain structure, involved in numerous tasks, ranging from processing and interpretation of somatosensory information, to control of motor functions. The normal ... -
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 ... -
Olanzapine-Induced Hyperphagia and Weight Gain Associate with Orexigenic Hypothalamic Neuropeptide Signaling without Concomitant AMPK Phosphorylation
Fernø, Johan; Varela, Luis; Skrede, Silje; Vázquez, María Jesús; Nogueiras, Rubén; Diéguez, Carlos; Vidal-Puig, Antonio; Steen, Vidar Martin; López, Miguel (Peer reviewed; Journal article, 2011-06-13)The success of antipsychotic drug treatment in patients with schizophrenia is limited by the propensity of these drugs to induce hyperphagia, weight gain and other metabolic disturbances, particularly evident for olanzapine ... -
One-Year Treatment with Olanzapine Depot in Female Rats: Metabolic Effects
Ersland, Kari Merete; Myrmel, Lene Secher; Fjære, Even; Berge, Rolf Kristian; Madsen, Lise; Steen, Vidar Martin; Skrede, Silje (Peer reviewed; Journal article, 2019-05)Background: Antipsychotic drugs can negatively affect the metabolic status of patients, with olanzapine as one of the most potent drugs. While patients are often medicated for long time periods, experiments in rats typically ... -
Patients with schizophrenia and bipolar disorder display a similar global gene expression signature in whole blood that reflects elevated proportion of immature neutrophil cells with association to lipid changes
Torsvik, Anja; Brattbakk, Hans-Richard; Trentani, Andrea; Holdhus, Rita; Stansberg, Christine; Bartz-Johannessen, Christoffer; Hughes, Timothy; Steen, Nils Eiel; Melle, Ingrid; Djurovic, Srdjan; Andreassen, Ole; Steen, Vidar Martin (Journal article; Peer reviewed, 2023)Schizophrenia (SCZ) and bipolar disorder (BD) share clinical characteristics, genetic susceptibility, and immune alterations. We aimed to identify differential transcriptional patterns in peripheral blood cells of patients ... -
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 ... -
Runaway multi-allelic copy number variation at the α-defensin locus in African and Asian populations
Hughes, Timothy; Hansson, Lars; Akkouh, Ibrahim; Hajdarevic, Riad; Bringsli, Jorunn; Torsvik, Anja; Inderhaug, Elin; Steen, Vidar Martin; Djurovic, Srdjan (Journal article; Peer reviewed, 2020-06-04)Alpha defensins are anti-microbial peptides of the innate immune system. The defensin A1 and A3 genes are located in a repeat array of variable copy number (the DEFA1A3 locus) and encode the human neutrophil peptides 1, 2 ... -
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 ... -
Switch from stress response to homeobox transcription factors in Adipose tissue after profound fat loss
Dankel, Simon N; Fadnes, Dag J.; Stavrum, Anne-Kristin; Stansberg, Christine; Holdhus, Rita; Hoang, Tuyen Thi Van; Veum, Vivian L.; Christensen, Bjørn Jostein; Våge, Villy; Sagen, Jørn V.; Steen, Vidar Martin; Mellgren, Gunnar (Peer reviewed; Journal article, 2010-06-09)Background In obesity, impaired adipose tissue function may promote secondary disease through ectopic lipid accumulation and excess release of adipokines, resulting in systemic low-grade inflammation, insulin resistance ... -
Transcriptional and functional effects of lithium in bipolar disorder iPSC-derived cortical spheroids
Osete, Jordi Requena; Akkouh, Ibrahim Ahmed; Levglevskyi, Oleksandr; Vandenberghe, Matthieu; Reis de Assis, Denis; Ueland, Thor; Kondratskaya, Elena; Holen, Børge; Szabo, Attila; Hughes, Timothy; Smeland, Olav Bjerkehagen; Steen, Vidar Martin; Andreassen, Ole; Djurovic, Srdjan (Journal article; Peer reviewed, 2023)Lithium (Li) is recommended for long-term treatment of bipolar disorder (BD). However, its mechanism of action is still poorly understood. Induced pluripotent stem cell (iPSC)-derived brain organoids have emerged as a ... -
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 ... -
Williams Syndrome neuroanatomical score associates with GTF2IRD1 in large-scale magnetic resonance imaging cohorts: A proof of concept for multivariate endophenotypes
Fan, Chun Chieh; Schork, Andrew J.; Brown, Timothy T.; Spencer, Barbara E.; Akshoomoff, Natacha; Chen, Chi-Hua; Kuperman, Joshua M.; Hagler, Donald J.; Steen, Vidar Martin; Le Hellard, Stephanie; Håberg, Asta; Espeseth, Thomas; Andreassen, Ole Andreas; Dale, Anders; Jernigan, Terry L.; Halgren, Eric (Peer reviewed; Journal article, 2018-06-08)Despite great interest in using magnetic resonance imaging (MRI) for studying the effects of genes on brain structure in humans, current approaches have focused almost entirely on predefined regions of interest and had ...