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World Journal of Biological Psychiatry

Kamyar Keramatian, Taj Dhanoa, Alexander McGirr, Donna J Lang, William G Honer, Raymond W Lam, Lakshmi N Yatham
OBJECTIVES: The neurobiological underpinnings of bipolar I disorder are not yet understood. Previous structural neuroimaging studies of bipolar disorder have produced rather conflicting results. We hypothesize that clinical sub-phenotypes of bipolar I disorder defined by their psychotic symptoms, especially those with mood-incongruent psychotic features, may have more extensive structural brain abnormalities. METHODS: We investigated structural brain alterations in patients with first-episode mania (n = 55) with mood-congruent (n = 16) and mood-incongruent (n = 32) psychotic features, as well as those without psychotic symptoms (n = 7), relative to healthy subjects (n = 56)...
October 20, 2016: World Journal of Biological Psychiatry
Susanne A Bengesser, Eva Z Reininghaus, Nina Lackner, Armin Birner, Frederike T Fellendorf, Martina Platzer, Nora Kainzbauer, Bernhard Tropper, Christa Hörmanseder, Robert Queissner, Hans-Peter Kapfhammer, Sandra J Wallner-Liebmann, Robert Fuchs, Erwin Petek, Christian Windpassinger, Mario Schnalzenberger, Bernd Reininghaus, Bernd Evert, Andreas Waha
OBJECTIVES: The clock gene ARNTL is associated with the transcription activation of monoamine oxidase A according to previous literature. Thus, we hypothesised that methylation of ARNTL may differ between bipolar disorder (BD) and controls. METHODS: The methylation status of one CpG island covering the first exon of ARNTL (PS2) and one site in the 5' region of ARNTL (cg05733463) were analysed in patients with BD (n = 151) versus controls (n = 66). Methylation analysis was performed by bisulphite-conversion of DNA from fasting blood with the EpiTect Bisulfite Kit, PCR and pyrosequencing...
October 14, 2016: World Journal of Biological Psychiatry
Hee Jeong Yoo, Mira Park, Soon Ae Kim
OBJECTIVES: Several reports suggest that mitochondrial dysfunction is involved in the pathophysiology of autism spectrum disorders (ASD). Therefore, mitochondrial DNA (mtDNA) copy number, a common biomarker for mitochondrial dysfunction, might be associated with ASD phenotypes. METHODS: Relative mtDNA copy number in the peripheral blood cells of 100 Korean ASD patients and their unaffected sib-pairs was measured by quantitative polymerase chain reaction (qPCR). RESULTS: ASD patients had significantly higher relative mtDNA copy numbers than their unaffected sibs (P = ...
October 14, 2016: World Journal of Biological Psychiatry
Anne R Reuter, J Malte Bumb, Juliane K Mueller, Cathrin Rohleder, Franziska Pahlisch, Franziska Hanke, Elisabeth Arens, F Markus Leweke, Dagmar Koethe, Emanuel Schwarz
Objectives Binocular depth inversion illusion (BDII) represents an illusion of visual perception that involves higher-order visual and cognitive processes. Its impairment has been linked to psychotic conditions and identified as a marker for at risk mental states. The endogenous cannabinoid system (ECS) is involved in various neurophysiological processes. One of its key components, anandamide, is involved in the pathophysiology of schizophrenia. Little is known about its impact on BDII alterations. Therefore, we explored associations between BDII and anandamide levels...
October 13, 2016: World Journal of Biological Psychiatry
Steven F Grieco, Dmitry Velmeshev, Marco Magistri, Hagit Eldar-Finkelman, Mohammad A Faghihi, Richard S Jope, Eleonore Beurel
OBJECTIVES: We examined mechanisms that contribute to the rapid antidepressant effect of ketamine in mice that is dependent on glycogen synthase kinase-3 (GSK3) inhibition. METHODS: We measured serotonergic (5HT)-2C-receptor (5HTR2C) cluster microRNA (miRNA) levels in mouse hippocampus after administering an antidepressant dose of ketamine (10 mg/kg) in wild-type and GSK3 knockin mice, after GSK3 inhibition with L803-mts, and in learned helpless mice. RESULTS: Ketamine up-regulated cluster miRNAs 448-3p, 764-5p, 1264-3p, 1298-5p and 1912-3p (2- to 11-fold)...
October 10, 2016: World Journal of Biological Psychiatry
Sern-Yih Cheah, Robert McLeay, Leesa F Wockner, Bruce R Lawford, Ross McD Young, Charles P Morris, Joanne Voisey
OBJECTIVE: To examine the combined effect of the BDNF Val66Met (rs6265) polymorphism and BDNF DNA methylation on transcriptional regulation of the BDNF gene. METHODS: DNA methylation profiles were generated for CpG sites proximal to Val66Met, within BDNF promoter I and exon V for prefrontal cortex samples from 25 schizophrenia and 25 control subjects. Val66Met genotypes and BDNF mRNA expression data were generated by transcriptome sequencing. Expression, methylation and genotype data were correlated and examined for association with schizophrenia...
October 7, 2016: World Journal of Biological Psychiatry
Jianhua Chen, Raja Amjad Waheed Khan, Meng Wang, Kuanjun He, Qingzhong Wang, Zhiqiang Li, Wenjin Li, Zujia Wen, Zhijian Song, Jiawei Shen, Yifeng Xu, Yongyong Shi
OBJECTIVE: The ATP-binding cassette transporter superfamily is one of the largest membrane protein families which is responsible for transportation of substances across the membranes by utilizing energy. Several researches have bridged the variations in ABCA13 with occurrence of psychiatric disorders. To investigate the overlapping risk conferred by ABCA13 for both major depressive disorder and schizophrenia, we analyzed tag single nucleotide polymorphisms (tag SNPs). METHOD: We used TaqMan® technology to genotype 1045 major depressive disorder patients, 1235 schizophrenia patients and 1235 healthy controls of Han Chinese origin...
October 7, 2016: World Journal of Biological Psychiatry
Nils Eiel Steen, Monica Aas, Carmen Simonsen, Ingrid Dieset, Martin Tesli, Mari Nerhus, Erlend Gardsjord, Ragni Mørch, Ingrid Agartz, Ingrid Melle, Torill Ueland, Olav Spigset, Ole A Andreassen
OBJECTIVES: Antipsychotics are effective in treating psychosis and mood episodes; however, the effect on cognition is less known. We investigated the association between serum levels of second generation antipsychotics (SGAs) and cognitive performance in psychosis spectrum disorders in a naturalistic setting. METHODS: A total of n = 495 patients with a DSM-IV Schizophrenia and Other Psychotic Disorders (SCZ, n = 373) or Bipolar Disorder (BD, n = 122) diagnosis treated with olanzapine, quetiapine, aripiprazole or risperidone were tested neuropsychologically with concurrent measurement of the serum concentration of the drug...
October 7, 2016: World Journal of Biological Psychiatry
Christine Ulke, Christian Sander, Philippe Jawinski, Nicole Mauche, Jue Huang, Janek Spada, Dirk Wittekind, Roland Mergl, Tobias Luck, Steffi Riedel-Heller, Tilman Hensch, Ulrich Hegerl
OBJECTIVES: Although patients with depression often suffer from sleep disturbances, most of them are not sleepy. Upregulation of brain arousal has been proposed as pathophysiological mechanism explaining sleep disturbances, inner tension, autonomic hyperarousal and anhedonia in depression. The aim of the current study was to examine the association between night-time sleep disturbances and brain arousal regulation the next day in depressed versus non-depressed subjects. METHODS: Twenty-eight elderly subjects (21 female; age = 70...
October 5, 2016: World Journal of Biological Psychiatry
Kaijing Ding, Jianzhong Yang, Gavin P Reynolds, Bing Chen, Jingru Shao, Ruixiang Liu, Qiujin Qian, Hua Liu, Runxu Yang, Jianfan Wen, Chuanyuan Kang
OBJECTIVES: To examine the association of the DNA methylation of DAT1 and DRD4 gene with methylphenidate (MPH) response in attention deficit hyperactivity disorder (ADHD). METHODS: One hundred and eleven DSM-IV defined ADHD Chinese Han children were recruited. Inattention, hyperactivity-impulsivity and oppositional symptoms were evaluated by the Swanson, Nolan and Pelham-IV-parent rating scale (SNAP-IV-P) at baseline and 6 weeks after MPH treatment. DNA methylation of CpG sites in the promoter sequences of DAT1 and DRD4 was examined for association with treatment response...
September 27, 2016: World Journal of Biological Psychiatry
Svetlana A Ivanova, Diana Z Osmanova, Maxim B Freidin, Olga Yu Fedorenko, Anastasia S Boiko, Ivan V Pozhidaev, Arkadiy V Semke, Nikolay A Bokhan, Alexey A Agarkov, Bob Wilffert, Anton J M Loonen
OBJECTIVES: Hyperprolactinaemia (HPRL) is a classical side effect of antipsychotic drugs primarily attributed to blockade of dopamine D2 subtype receptors in the pituitary gland. Although dopamine is considered the primary factor inhibiting prolactin release, the activity of prolactin-producing lactotrophs is also regulated by the secretagogues thyrotrophin releasing hormone, vasoactive intestinal polypeptide and serotonin (5-hydroxytryptamine; 5-HT). METHODS: We describe the association between HPRL and a set of 29 SNPs from 5-HT receptor genes HTR1A, HTR1B, HTR2A, HTR2C, HTR3A, HTR3B and HTR6 in a population of 446 Caucasians (221 males/225 females) with a clinical diagnosis of schizophrenia (according to ICD-10: F20) who were treated with classical and/or atypical antipsychotic drugs...
September 22, 2016: World Journal of Biological Psychiatry
Isabelle Massat, Hichem Slama, Thomas Villemonteix, Alison Mary, Simon Baijot, Ariadna Albajara Sáenz, Danièle Balériaux, Thierry Metens, Martin Kavec, Philippe Peigneux
OBJECTIVES: Hypo/reduced activity in motor response inhibition (RI) cerebral networks was recently proposed as a promising specific neurobiological marker of Attention Deficit/Hyperactivity Disorder (ADHD). Before adopting such a pattern as a key diagnosis tool, we aim to replicate in an independent study the mechanisms underlying reduced RI-related activity in ADHD, after controlling for potentially confounding effects. METHODS: In this fMRI study, we investigated the neural networks mediating successful and failed motor RI in children with ADHD and typically developing children (TDC) using the stop signal task (SST) paradigm...
September 20, 2016: World Journal of Biological Psychiatry
Yu-Jie Chiou, Tiao-Lai Huang
OBJECTIVES: Brain-derived neurotrophic factors (BDNF) are known to be related to the psychopathology of schizophrenia. However, studies focussing on drug-naïve first-episode schizophrenia are still rare. METHODS: Over a 5-year period, we investigated the serum BDNF levels in patients with first-episode drug-naïve schizophrenia and compared them to age- and sex-matched healthy controls. We also explored the association between antipsychotic doses, positive and negative syndrome scale (PANSS) scores, and serum BDNF levels before and after a 4-week antipsychotic treatment...
September 19, 2016: World Journal of Biological Psychiatry
Chiara Fabbri, Ladislav Hosak, Rainald Mössner, Ina Giegling, Laura Mandelli, Frank Bellivier, Stephan Claes, David A Collier, Alejo Corrales, Lynn E Delisi, Carla Gallo, Michael Gill, James L Kennedy, Marion Leboyer, Amanda Lisoway, Wolfgang Maier, Miguel Marquez, Isabelle Massat, Ole Mors, Pierandrea Muglia, Markus M Nöthen, Michael C O'Donovan, Jorge Ospina-Duque, Peter Propping, Yongyong Shi, David St Clair, Florence Thibaut, Sven Cichon, Julien Mendlewicz, Dan Rujescu, Alessandro Serretti
Major depressive disorder (MDD) is a heritable disease with a heavy personal and socio-economic burden. Antidepressants of different classes are prescribed to treat MDD, but reliable and reproducible markers of efficacy are not available for clinical use. Further complicating treatment, the diagnosis of MDD is not guided by objective criteria, resulting in the risk of under- or overtreatment. A number of markers of MDD and antidepressant response have been investigated at the genetic, epigenetic, gene expression and protein levels...
September 7, 2016: World Journal of Biological Psychiatry
Hui Hua Chang, Po See Chen
No abstract text is available yet for this article.
September 2, 2016: World Journal of Biological Psychiatry
Guillaume Fond, Lore Brunel, Laurent Boyer
No abstract text is available yet for this article.
September 2, 2016: World Journal of Biological Psychiatry
Amity E Green, Paul B Fitzgerald, Patrick J Johnston, Pradeep J Nathan, Jayashri Kulkarni, Rodney J Croft
OBJECTIVES: Schizophrenia is characterised by significant episodic memory impairment that is thought to be related to problems with encoding, however the neuro-functional mechanisms underlying these deficits are not well understood. The present study used a subsequent recognition memory paradigm and event-related potentials (ERPs) to investigate temporal aspects of episodic memory encoding deficits in schizophrenia. METHODS: Electroencephalographic data was recorded in 24 patients and 19 healthy controls whilst participants categorised single words as pleasant/unpleasant...
August 30, 2016: World Journal of Biological Psychiatry
Siegfried Kasper
No abstract text is available yet for this article.
October 2016: World Journal of Biological Psychiatry
Jodie Naim-Feil, John L Bradshaw, Nigel C Rogasch, Zafiris J Daskalakis, Dianne M Sheppard, Dan I Lubman, Paul B Fitzgerald
OBJECTIVES: Preclinical studies suggest that cortical alterations within the prefrontal cortex (PFC) are critical to the pathophysiology of alcohol dependence. Combined transcranial magnetic stimulation (TMS) and electroencephalography (EEG) allows direct assessment of cortical excitability and inhibition within the PFC of human subjects. We report the first application of TMS-EEG to measure these indices within the PFC of alcohol-dependent (ALD) patients post-detoxification. METHODS: Cortical inhibition was assessed in 12 ALD patients and 14 healthy controls through single and paired-pulse TMS paradigms...
October 2016: World Journal of Biological Psychiatry
Lone Baandrup, Jane Lindschou, Per Winkel, Christian Gluud, Birte Y Glenthoj
OBJECTIVES: We assessed if prolonged-release melatonin can facilitate withdrawal of long-term benzodiazepine usage in patients with schizophrenia or bipolar disorder. METHODS: Randomised, placebo-controlled, blinded, parallel superiority trial of 24 weeks duration. Participants were randomised to prolonged-release melatonin 2 mg daily versus matching placebo and were continuously guided to gradually reduce their usual benzodiazepine dosage. The primary outcome was mean benzodiazepine daily dosage at 24 weeks...
October 2016: World Journal of Biological Psychiatry
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