Blar i Bergen Open Research Archive på forfatter "Haavik, Jan"
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Epistatic and gene wide effects in YWHA and aromatic amino hydroxylase genes across ADHD and other common neuropsychiatric disorders: Association with YWHAE
Jacobsen, Kaya Kvarme; Kleppe, Rune; Johansson, Stefan; Zayats, Tetyana; Haavik, Jan (Peer reviewed; Journal article, 2015-09)Monoamines critically modulate neurophysiological functions affected in several neuropsychiatric disorders. We therefore examined genes encoding key enzymes of catecholamine and serotonin biosynthesis (tyrosine and tryptophan ... -
Event-related-potential (ERP) correlates of performance monitoring in adults with attention-deficit hyperactivity disorder (ADHD)
Marquardt, Lynn Anne; Eichele, Heike; Lundervold, Astri; Haavik, Jan; Eichele, Tom (Peer reviewed; Journal article, 2018-04-11)Introduction: Attention-deficit hyperactivity disorder (ADHD) is one of the most frequent neurodevelopmental disorders in children and tends to persist into adulthood. Evidence from neuropsychological, neuroimaging, and ... -
Evidence for similar structural brain anomalies in youth and adult attention-deficit/hyperactivity disorder: a machine learning analysis
Zhang-James, Yanli; Helminen, Emily C.; Liu, Jinru; Busatto, Geraldo F.; Calvo, Anna; Cercignani, Mara; Chaim-Avancini, Tiffany M.; Gabel, Matt C.; Harrison, Neil A.; Lazaro, Luisa; Lera-Miguel, Sara; Louza, Mario R.; Nicolau, Rosa; Rosa, Pedro G.; Schulte-Rutte, Martin; Zanetti, Marcus V.; Ambrosino, Sara; Asherson, Philip; Banaschewski, Tobias; Baranov, Alexandr; Baumeister, Sarah; Baur-Streubel, Ramona; Bellgrove, Mark A.; Biederman, Joseph; Bralten, Janita; Bramati, Ivanei; Brandeis, Daniel; Brem, Silvia; Buitelaar, Jan K.; Castellanos, Francisco X.; Chantiluke, Kaylita C.; Christakou, Anastasia; Coghill, David; Conzelmann, Annette; Cubillo, Ana; Dale, Anders M.; de Zeeuw, Patrick; Doyle, Alysa E.; Durston, Sarah; Earl, Eric A.; Epstein, Jeffery N.; Ethofer, Thomas; Fair, Damien A.; Fallgatter, Andreas J.; Frodl, Thomas; Gogberashvili, Tinatin; Haavik, Jan; Hartman, Catharina A.; Heslenfeld, Dirk J.; Hoekstra, Pieter J.; Hohmann, Sarah; Høvik, Marie Farstad; Jahanshad, Neda; Jernigan, Terry L.; Kardatzki, Bernd; Karkashadze, George A.; Kelly, Clare; Kohls, Gregor; Konrad, Kerstin; Kuntsi, Jonna; Lesch, Klaus-Peter; Lundervold, Astri J.; Malpas, Charles B.; Mattos, Paulo; McCarthy, Hazel; Mehta, Mitul A.; Namazova-Baranova, Leyla; Nigg, Joel T.; Novotny, Stephanie E.; O’Gorman Tuura, Ruth L.; Weiss, Eileen Oberwelland; Oosterlaan, Jaap; Oranje, Bob; Paloyelis, Yannis; Pauli, Paul; Plessen, Kerstin J.; Ramos-Quiroga, Josep Antoni; Reif, Andreas; Reneman, Liesbeth; Rubia, Katya; Schrantee, Anouk; Schwarz, Lena; Schweren, Lizanne J.S.; Seitz, Jochen; Shaw, Philip; Silk, Tim J.; Skokauskas, Norbert; Vila, Juan Carlos Soliva; Stevens, Michael C.; Sudre, Gustavo; Tamm, Leanne; Thompson, Paul M.; Tovar-Moll, Fernanda; van Erp, Theo G.M.; Vance, Alasdair; Vilarroya, Oscar; Vives-Gilabert, Yolanda; von Polier, Georg G.; Walitza, Susanne; Yoncheva, Yuliya N.; Ziegler, Georg C.; Franke, Barbara; Hoogman, Martine; Faraone, Stephen (Journal article; Peer reviewed, 2021)Attention-deficit/hyperactivity disorder (ADHD) affects 5% of children world-wide. Of these, two-thirds continue to have impairing symptoms of ADHD into adulthood. Although a large literature implicates structural brain ... -
Exome chip analyses in adult attention deficit hyperactivity disorder
Zayats, Tetyana; Jacobsen, Kaya Kvarme; Kleppe, Rune; Jacob, CP; Kittel-Schneider, Sarah; Ribases, Marta; Ramos-Quiroga, JA; Richarte, Vanesa; Casas, M; Mota, NR; Grevet, EH; Klein, M; Corominas, J; Bralten, Janita; Galesloot, T; Vasquez, AA; Herms, S; Forstner, AJ; Larsson, H; Breen, G; Asherson, P; Gross-Lesch, Silke; Lesch, KP; Cichon, Sven; Gabrielsen, Maiken Elvestad; Holmen, Oddgeir Lingaas; Bau, CH; Buitelaar, Jan; Kiemeney, L; Faraone, Stephen V.; Cormand, B; Franke, Barbara; Reif, Andreas; Haavik, Jan; Johansson, Stefan (Peer reviewed; Journal article, 2016)Attention-deficit/hyperactivity disorder (ADHD) is a highly heritable childhood-onset neuropsychiatric condition, often persisting into adulthood. The genetic architecture of ADHD, particularly in adults, is largely unknown. ... -
Expanding the toolbox of ADHD genetics. How can we make sense of parent of origin effects in ADHD and related behavioral phenotypes?
Zayats, Tetyana; Johansson, Stefan; Haavik, Jan (Peer reviewed; Journal article, 2015-10-16)Genome-wide association (GWA) studies have shown that many different genetic variants cumulatively contribute to the risk of psychiatric disorders. It has also been demonstrated that various parent-of-origin effects (POE) ... -
An Exploratory Investigation of Goal Management Training in Adults With ADHD: Improvements in Inhibition and Everyday Functioning
Jensen, Daniel André; Halmøy, Anne; Stubberud, Jan Egil; Haavik, Jan; Lundervold, Astri J.; Sørensen, Lin (Journal article; Peer reviewed, 2021)Background: Adults with attention deficit/hyperactivity disorder (ADHD) are predominantly treated with medication. However, there is also a need for effective, psychologically based interventions. As ADHD is strongly ... -
Familial co-aggregation of attention-deficit/ hyperactivity disorder and autoimmune diseases: a cohort study based on Swedish population-wide registers
Hegvik, Tor-Arne; Chen, Qi; Kuja-Halkola, Ralf; Klungsøyr, Kari; Butwicka, Agnieszka; Lichtenstein, Paul; Almqvist, Catarina; Faraone, Stephen V.; Haavik, Jan; Larsson, Henrik (Journal article; Peer reviewed, 2021)Background Attention-deficit/hyperactivity disorder (ADHD) has been associated with several autoimmune diseases (AD), both within individuals and across relatives, implying common underlying genetic or environmental factors ... -
Functional studies of tyrosine hydroxylase missense variants reveal distinct patterns of molecular defects in dopa-responsive dystonia
Fossbakk, Agnete; Kleppe, Rune; Knappskog, Per; Martinez, Aurora; Haavik, Jan (Peer reviewed; Journal article, 2014-06-03)Congenital tyrosine hydroxylase deficiency (THD) is found in autosomal-recessive Dopa-responsive dystonia and related neurological syndromes. The clinical manifestations of THD are variable, ranging from early-onset lethal ... -
GADL1 is a multifunctional decarboxylase with tissue-specific roles in β-alanine and carnosine production
Mahootchi, Elaheh; Homaei, Selina Cannon; Kleppe, Rune; Winge, Ingeborg; Hegvik, Tor-Arne; Perez, Roberto Megias; Totland, Christian; Mogavero, Floriana; Baumann, Anne; Glennon, Jeffrey Colm; Miletic, Hrvoje; Kursula, Petri; Haavik, Jan (Journal article; Peer reviewed, 2020)Carnosine and related β-alanine–containing peptides are believed to be important antioxidants, pH buffers, and neuromodulators. However, their biosynthetic routes and therapeutic potential are still being debated. This ... -
Gender Differences in Psychiatric Comorbidity: Population-based study of 40,000 Adults with Attention-Deficit Hyperactivity Disorder
Solberg, Berit Skretting; Halmøy, Anne; Engeland, Anders; Igland, Jannicke; Haavik, Jan; Klungsøyr, Kari (Peer reviewed; Journal article, 2017-12-21)OBJECTIVE: We aimed at determining whether gender modified associations between ADHD and psychiatric comorbidities in adults. METHOD: We identified adults with ADHD by linking Norwegian national registries and compared ... -
Gene-Environment Interactions in Attention-Deficit/Hyperactivity Disorder Symptom Dimensions: The Role of Unhealthy Food Habits
Li, Lin; Taylor, Mark J; Bälter, Katarina; xie, tian; Solberg, Berit Skretting; Haavik, Jan; Arias-Vásquez, Alejandro; Hartman, Catharina A; Larsson, Henrik (Journal article; Peer reviewed, 2021)Background: Dietary habits were investigated as environmental risk factors for Attention-Deficit/Hyperactivity Disorder (ADHD). However, no previous studies explored the effects of dietary factors on modifying the role of ... -
Genetic association study of childhood aggression across raters, instruments, and age
Ip, Hill F.; van der Laan, Camiel M.; Krapohl, Eva M. L.; Brikell, Isabell; Sánchez-Mora, Cristina; Nolte, Ilja M.; Pourcain, Beate St; Bolhuis, Koen; Palviainen, Teemu; Zafarmand, Hadi; Colodro-Conde, Lucía; Gordon, Scott; Zayats, Tetyana; Aliev, Fazil; Jiang, Chang; Wang, Carol A.; Saunders, Gretchen; Karhunen, Ville; Hammerschlag, Anke R.; Adkins, Daniel E.; Border, Richard; Peterson, Roseann E.; Prinz, Joseph A.; Thiering, Elisabeth; Seppälä, Iikka; Vilor-Tejedor, Natàlia; Ahluwalia, Tarunveer S.; Day, Felix R.; Hottenga, Jouke-Jan; Allegrini, Andrea G.; Rimfeld, Kaili; Chen, Qi; Yi, Lu; Martin, Joanna; Soler Artigas, Marìa; Rovira, Paula; Bosch, Rosa; Español, Gemma; Ramos-Quiroga, Josep Antonio; Neumann, Alexander; Haavik, Jan; Harris, Jennifer Ruth; Helgeland, Øyvind; Johansson, Stefan; Knudsen, Gun Peggy Strømstad; Njølstad, Pål Rasmus; Havdahl, Alexandra; Magnus, Per Minor; Reichborn-Kjennerud, Ted; Boomsma, Dorret I. (Journal article; Peer reviewed, 2021)Childhood aggressive behavior (AGG) has a substantial heritability of around 50%. Here we present a genome-wide association meta-analysis (GWAMA) of childhood AGG, in which all phenotype measures across childhood ages from ... -
Genome Guided Personalized Drug Therapy in Attention Deficit Hyperactivity Disorder
Haavik, Jan (Journal article; Peer reviewed, 2022)ADHD is a common behavioral syndrome with a heritability of 70–80%. Genome wide sequencing and association studies indicate that ADHD risk variants are distributed across a wide range of allele frequencies and relative ... -
Genome wide association study identifies variants in NBEA associated with migraine in bipolar disorder
Jacobsen, Kaya Kvarme; Nievergelt, Caroline M.; Zayats, Tetyana; Greenwood, Tifany A.; Anttila, Verneri; Akiskal, Hagop Souren; Haavik, Jan; Fasmer, Ole Bernt; Kelsoe, John R.; Johansson, Stefan; Ødegaard, Ketil Joachim (Peer reviewed; Journal article, 2015-10-12)Background. Migraine is a common comorbidity among individuals with bipolar disorder, but the underlying mechanisms for this co-occurrence are poorly understood. The aim of this study was to investigate the genetic background ... -
Genome-wide analyses of aggressiveness in attention-deficit hyperactivity disorder
Brevik, Erlend Joramo; van Donkelaar, Marjolein M J; Weber, Heike; Sanchez-Mora, Cristina; Jacob, Christian; Rivero, Olga; Kittel-Schneider, Sarah; Garcia-Martinez, Iris; Aebi, Marcel; van Hulzen, Kimm; Cormand, Bru; Ramos-Quiroga, Josep A; Lesch, Klaus-Peter; Reif, Andreas; Ribases, Marta; Franke, Barbara; Posserud, Maj-Britt Rocio; Johansson, Stefan; Lundervold, Astri; Haavik, Jan; Zayats, Tetyana (Peer reviewed; Journal article, 2016-03-29)Aggressiveness is a behavioral trait that has the potential to be harmful to individuals and society. With an estimated heritability of about 40%, genetics is important in its development. We performed an exploratory ... -
Genome-wide analysis of attention deficit hyperactivity disorder in Norway
Zayats, Tetyana; Athanasiu, Lavinia; Sønderby, Ida Elken; Djurovic, Srdjan; Westlye, Lars Tjelta; Tamnes, Christian Krog; Fladby, Tormod; Aase, Heidi; Zeiner, Pål; Reichborn-Kjennerud, Ted; Knappskog, Per; Knudsen, Gun Peggy; Andreassen, Ole Andreas; Johansson, Stefan; Haavik, Jan (Peer reviewed; Journal article, 2015-04-13)Background Attention deficit hyperactivity disorder (ADHD) is a highly heritable neuropsychiatric condition, but it has been difficult to identify genes underlying this disorder. This study aimed to explore genetics of ... -
Goal management training improves executive control in adults with ADHD: an open trial employing attention network theory to examine effects on attention
Jensen, Daniel Andre; Lundervold, Astri J.; Stubberud, Jan Egil; Halmøy, Anne; Haavik, Jan; Sørensen, Lin (Journal article; Peer reviewed, 2022)Background Adults with Attention-Deficit/Hyperactivity Disorder (ADHD) typically experience poorer attentional control. According to the attention network theory, attentional control relies on three interacting networks ... -
Identification of Genetic Loci Shared Between Attention-Deficit/Hyperactivity Disorder, Intelligence, and Educational Attainment
O`Connell, Kevin; Shadrin, Alexey A.; Smeland, Olav Bjerkehagen; Bahrami, Shahram; Frei, Oleksandr; Bettella, Francesco; Krull, Florian; Fan, Chun C.; Askeland, Ragna Bugge; Knudsen, Gun Peggy Strømstad; Halmøy, Anne; Steen, Nils Eiel; Ueland, Torill; Walters, Bragi; Davíðsdóttir, Katrín; Haraldsdóttir, Gyda S.; Guðmundsson, Ólafur; Stefansson, Hreinn; Reichborn-Kjennerud, Ted; Haavik, Jan; Dale, Anders M.; Stefánsson, Kári; Djurovic, Srdjan; Andreassen, Ole Andreas (Peer reviewed; Journal article, 2020)Background: Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder that is consistently associated with lower levels of educational attainment. A recent large genome-wide association study identified ... -
Implication of NOTCH1 Gene in Susceptibility to Anxiety and Depression among Sexual Abuse Victims
Steine, Iris Mulders; Zayats, Tetyana; Stansberg, Christine; Pallesen, Ståle; Mrdalj, Jelena; Håvik, Bjarte; Soule, Jonathan; Haavik, Jan; Milde, Anne Marita; Skrede, Silje; Murison, Robert; Krystal, John H; Grønli, Janne (Peer reviewed; Journal article, 2016-12-13)Sexual abuse contributes to the development of multiple forms of psychopathology, including anxiety and depression, but the extent to which genetics contributes to these disorders among sexual abuse victims remains unclear. ... -
Implication of the APP gene in intellectual abilities
Myrum, Craig; Nikolaienko, Oleksii; Bramham, Clive R.; Haavik, Jan; Zayats, Tetyana (Peer reviewed; Journal article, 2017)Background: Cognitive functions are highly heritable and polygenic, though the source of this genetic influence is unclear. On the neurobiological level, these functions rely on effective neuroplasticity, in which the ...