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bipolar disorder biomarkers

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https://www.readbyqxmd.com/read/27887601/protocol-for-a-prospective-randomized-study-on-neurophysiological-assessment-of-lower-urinary-tract-function-in-a-healthy-cohort
#1
Stéphanie van der Lely, Martina Stefanovic, Melanie R Schmidhalter, Marta Pittavino, Reinhard Furrer, Martina D Liechti, Martin Schubert, Thomas M Kessler, Ulrich Mehnert
BACKGROUND: Lower urinary tract symptoms are highly prevalent and a large proportion of these symptoms are known to be associated with a dysfunction of the afferent pathways. Diagnostic tools for an objective and reproducible assessment of afferent nerve function of the lower urinary tract are missing. Previous studies showed first feasibility results of sensory evoked potential recordings following electrical stimulation of the lower urinary tract in healthy subjects and patients. Nevertheless, a refinement of the methodology is necessary...
November 25, 2016: BMC Urology
https://www.readbyqxmd.com/read/27885309/transcranial-direct-current-stimulation-use-in-the-treatment-of-neuropsychiatric-disorders-a-brief-review
#2
Sarah M Szymkowicz, Molly E McLaren, Uma Suryadevara, Adam J Woods
Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique that has grown in popularity over the past two decades as an alternative treatment option for various neuropsychiatric disorders. tDCS modulates cortical excitability through the application of a weak direct current to the scalp via electrodes placed over cortical regions of interest. It has been shown to be a promising and relatively safe treatment tool with few adverse events. In this article, we will briefly review the efficacy of tDCS in depression, bipolar disorder, schizophrenia, and obsessive-compulsive disorder...
November 2016: Psychiatric Annals
https://www.readbyqxmd.com/read/27873290/aims-and-structure-of-the-german-research-consortium-bipolife-for-the-study-of-bipolar-disorder
#3
REVIEW
Philipp S Ritter, Felix Bermpohl, Oliver Gruber, Martin Hautzinger, Andreas Jansen, Georg Juckel, Tilo Kircher, Martin Lambert, Christoph Mulert, Andrea Pfennig, Andreas Reif, Otto Rienhoff, Thomas G Schulze, Emanuel Severus, Thomas Stamm, Michael Bauer
BACKGROUND: Bipolar disorder is a severe and heterogeneous mental disorder. Despite great advances in neuroscience over the past decades, the precise causative mechanisms at the transmitter, cellular or network level have so far not been unraveled. As a result, individual treatment decisions cannot be tailor-made and the uncertain prognosis is based on clinical characteristics alone. Although a subpopulation of patients have an excellent response to pharmacological monotherapy, other subpopulations have been less well served by the medical system and therefore require more focused attention...
December 2016: International Journal of Bipolar Disorders
https://www.readbyqxmd.com/read/27867936/effects-of-lithium-monotherapy-for-bipolar-disorder-on-gene-expression-in-peripheral-lymphocytes
#4
Amit Anand, Jeanette N McClintick, Jill Murrell, Harish Karne, John I Nurnberger, Howard J Edenberg
BACKGROUND: This study investigated the effect of lithium monotherapy on peripheral lymphocyte gene expression in bipolar disorder (BD). METHOD: Twenty-two medication-free bipolar subjects (11 hypomanic, 11 depressed) were started on lithium monotherapy. Closely matched healthy subjects (n = 15) were included as controls but did not receive treatment. Blood RNA samples were collected at baseline and after 2 and 8 weeks of treatment. RNA expression was measured using the Affymetrix GeneChip® Human Gene 1...
October 2016: Molecular Neuropsychiatry
https://www.readbyqxmd.com/read/27867834/neurobiology-of-risk-for-bipolar-disorder
#5
REVIEW
Ayşegül Özerdem, Deniz Ceylan, Güneş Can
Bipolar disorder (BD) is a chronic mental illness which follows a relapsing and remitting course and requires lifetime treatment. The lack of biological markers for BD is a major difficulty in clinical practice. Exploring multiple endophenotypes to fit in multivariate genetic models for BD is an important element in the process of finding tools to facilitate early diagnosis, early intervention, prevention of new episodes, and follow-up of treatment response in BD. Reviewing of studies on neuroimaging, neurocognition, and biochemical parameters in populations with high genetic risk for the illness can yield an integrative perspective on the neurobiology of risk for BD...
2016: Current Treatment Options in Psychiatry
https://www.readbyqxmd.com/read/27814962/neural-complexity-as-a-potential-translational-biomarker-for-psychosis
#6
Brandon Hager, Albert C Yang, Roscoe Brady, Shashwath Meda, Brett Clementz, Godfrey D Pearlson, John A Sweeney, Carol Tamminga, Matcheri Keshavan
BACKGROUND: The adaptability of the human brain to the constantly changing environment is reduced in patients with psychotic disorders, leading to impaired cognitive functions. Brain signal complexity, which may reflect adaptability, can be readily quantified via resting-state functional magnetic resonance imaging (fMRI) signals. We hypothesized that resting-state brain signal complexity is altered in psychotic disorders, and is correlated with cognitive impairment. METHODS: We assessed 156 healthy controls (HC) and 330 probands, including 125 patients with psychotic bipolar disorder (BP), 107 patients with schizophrenia (SZ), 98 patients with schizoaffective disorder (SAD) and 230 of their unaffected first-degree relatives (76 BPR, 79 SADR, and 75 SZR) from four sites of the Bipolar-Schizophrenia Network on Intermediate Phenotypes (B-SNIP) consortium...
October 26, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27810712/sleep-architecture-parameters-as-a-putative-biomarker-of-suicidal-ideation-in-treatment-resistant-depression
#7
Rebecca A Bernert, David A Luckenbaugh, Wallace C Duncan, Naomi G Iwata, Elizabeth D Ballard, Carlos A Zarate
BACKGROUND: Disturbed sleep may confer risk for suicidal behaviors. Polysomnographic (PSG) sleep parameters have not been systematically evaluated in association with suicidal ideation (SI) among individuals with treatment-resistant depression (TRD). METHODS: This secondary data analysis included 54 TRD individuals (N=30 with major depressive disorder (MDD) and N=24 with bipolar depression (BD)). PSG sleep parameters included Sleep Efficiency (SE), Total Sleep Time (TST), Wakefulness After Sleep Onset (WASO), REM percent/latency, and non-REM (NREM) Sleep Stages 1-4...
October 14, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27806866/neurofunctional-differences-among-youth-with-and-at-varying-risk-for-developing-mania
#8
Jeffrey A Welge, Lawrence J Saliba, Jeffrey R Strawn, James C Eliassen, L Rodrigo Patino, Caleb M Adler, Wade Weber, Marguerite Reid Schneider, Drew H Barzman, Stephen M Strakowski, Melissa P DelBello, Robert K McNamara
OBJECTIVE: To examine prefrontal and amygdala activation during emotional processing in youth with or at varying risk for developing mania to identify candidate central prodromal risk biomarkers. METHOD: Four groups of medication-free adolescents (10-20 years old) participated: adolescents with first-episode bipolar I disorder (BP-I; n = 32), adolescents with a parent with bipolar disorder and a depressive disorder (at-risk depressed [ARD]; n = 32), healthy adolescents with a parent with bipolar disorder (at-risk healthy [ARH]; n = 32), and healthy adolescents with no personal or family history of psychiatric illness (healthy comparison [HC]; n = 32)...
November 2016: Journal of the American Academy of Child and Adolescent Psychiatry
https://www.readbyqxmd.com/read/27800654/biological-hypotheses-and-biomarkers-of-bipolar-disorder
#9
REVIEW
Ekaterina Sigitova, Zdeněk Fišar, Jana Hroudová, Tereza Cikánková, Jiří Raboch
The most common mood disorders are major depressive disorders and bipolar disorders. The pathophysiology of bipolar disorder is complex, multifactorial, and not fully understood. Creation of new hypotheses in the field gives impetus for studies and searching new biomarkers of the bipolar disorder. Conversely, new biomarkers facilitate not only diagnosis of a disorder and monitoring of biological effects of treatment, but also formulation of new hypotheses of the causes and pathophysiology of the bipolar disorder...
October 31, 2016: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/27788314/reconsidering-dietary-polyunsaturated-fatty-acids-in-bipolar-disorder-a-translational-picture
#10
Erika F H Saunders, Christopher E Ramsden, Mostafa S Sherazy, Alan J Gelenberg, John M Davis, Stanley I Rapoport
Inflammation is an important mediator of pathophysiology in bipolar disorder. The omega-3 (n-3) and omega-6 (n-6) polyunsaturated fatty acid (PUFA) metabolic pathways participate in several inflammatory processes and have been linked through epidemiologic and clinical studies to bipolar disorder and its response to treatment. We review the proposed role of PUFA metabolism in neuroinflammation, modulation of brain PUFA metabolism by antimanic medications in rodent models, and anti-inflammatory pharmacotherapy in bipolar disorder and in major depressive disorder (MDD)...
October 2016: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/27771555/srebf-2-polymorphism-influences-white-matter-microstructure-in-bipolar-disorder
#11
Sara Poletti, Veronica Aggio, Irene Bollettini, Andrea Falini, Cristina Colombo, Francesco Benedetti
The aim of the study is to investigate if gene polymorphisms in sterol regulatory element binding protein transcriptional factors SREBF-1 and SREBF-2, which regulate lipid and cholesterol metabolism, could affect white matter (WM) microstructure, the most recognized structural biomarker of bipolar disorder (BD). In a sample of 93 patients affected by BD, we investigated the effect of SREBF-1 rs11868035, and SREBF-2 rs1052717, on WM microstructure, using diffusion tensor imaging and tract-based spatial statistics...
October 15, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27750061/cross-validation-of-clinical-characteristics-and-treatment-patterns-associated-with-phenotypes-for-lithium-response-defined-by-the-alda-scale
#12
Jan Scott, Pierre Alexis Geoffroy, Sarah Sportiche, Clara Brichant-Petit-Jean, Sebastien Gard, Jean-Pierre Kahn, Jean-Michel Azorin, Chantal Henry, Bruno Etain, Frank Bellivier
BACKGROUND: It is increasingly recognised that reliable and valid assessments of lithium response are needed in order to target more efficiently the use of this medication in bipolar disorders (BD) and to identify genotypes, endophenotypes and biomarkers of response. METHODS: In a large, multi-centre, clinically representative sample of 300 cases of BD, we assess external clinical validators of lithium response phenotypes as defined using three different recommended approaches to scoring the Alda lithium response scale...
October 11, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27748930/mirnas-and-their-role-in-the-correlation-between-schizophrenia-and-cancer-review
#13
E Rizos, N Siafakas, E Skourti, C Papageorgiou, J Tsoporis, T H Parker, D I Christodoulou, D A Spandidos, E Katsantoni, V Zoumpourlis
Schizophrenia (SZ) and cancer (Ca) have a broad spectrum of clinical phenotypes and a complex biological background, implicating a large number of genetic and epigenetic factors. SZ is a chronic neurodevelopmental disorder signified by an increase in the expression of apoptotic molecular signals, whereas Ca is conversely characterized by an increase in appropriate molecular signaling that stimulates uncontrolled cell proliferation. The rather low risk of developing Ca in patients suffering from SZ is a hypothesis that is still under debate...
October 14, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27746310/personalized-medicine-prediction-of-disease-vulnerability-in-mood-disorders
#14
Stefania Prendes-Alvarez, Charles B Nemeroff
Personalized or precision medicine is a medical discipline that proposes tailoring health care to each individual by integrating data from their genetic makeup, epigenetic modifications, other biomarkers, clinical symptoms and environmental exposures. Currently, patients typically present for treatment of mood disorders relatively late in the disease course and this is of great concern both because delay in attaining remission reduces the success of subsequent treatment and depressive episodes have negative cumulative effects on the brain and body...
October 13, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27744225/differential-brain-network-activity-across-mood-states-in-bipolar-disorder
#15
Roscoe O Brady, Neeraj Tandon, Grace A Masters, Allison Margolis, Bruce M Cohen, Matcheri Keshavan, Dost Öngür
BACKGROUND: This study aimed to identify how the activity of large-scale brain networks differs between mood states in bipolar disorder. The authors measured spontaneous brain activity in subjects with bipolar disorder in mania and euthymia and compared these states to a healthy comparison population. METHODS: 23 subjects with bipolar disorder type I in a manic episode, 24 euthymic bipolar I subjects, and 23 matched healthy comparison (HC) subjects underwent resting state fMRI scans...
January 1, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27737600/update-on-bipolar-disorder-biomarker-candidates
#16
Antonio L Teixeira, Haitham Salem, Benicio N Frey, Izabela G Barbosa, Rodrigo Machado-Vieira
Bipolar disorder is a chronic and disabling mood disorder with a complex pathophysiological basis. A significant percentage of patients do not receive correct diagnosis which directly influences therapeutic response, rendering recovery troublesome. There is a long-standing need for proper non-clinically based tools for diagnosis, treatment selection and follow-up of such patients. Areas covered: In the past decade, the scientific community has shown a great interest in biomarker development. Here, we highlight the different potential biomarkers and we discuss their feasibility and their possible clinical relevance...
October 13, 2016: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/27701407/gene-expression-alterations-related-to-mania-and-psychosis-in-peripheral-blood-of-patients-with-a-first-episode-of-psychosis
#17
E S Gouvea, V K Ota, C Noto, M L Santoro, L M Spindola, P N Moretti, C M Carvalho, G Xavier, A C Rios, J R Sato, M A F Hayashi, E Brietzke, A Gadelha, R A Bressan, Q Cordeiro, S I Belangero
Psychotic disorders affect ~3% of the general population and are among the most severe forms of mental diseases. In early stages of psychosis, clinical aspects may be difficult to distinguish from one another. Undifferentiated psychopathology at the first-episode of psychosis (FEP) highlights the need for biomarkers that can improve and refine differential diagnosis. We investigated gene expression differences between patients with FEP-schizophrenia spectrum (SCZ; N=53) or FEP-Mania (BD; N=16) and healthy controls (N=73)...
October 4, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27676446/endocannabinoid-signaling-in-social-functioning-an-rdoc-perspective
#18
D S Karhson, A Y Hardan, K J Parker
Core deficits in social functioning are associated with various neuropsychiatric and neurodevelopmental disorders, yet biomarker identification and the development of effective pharmacological interventions has been limited. Recent data suggest the intriguing possibility that endogenous cannabinoids, a class of lipid neuromodulators generally implicated in the regulation of neurotransmitter release, may contribute to species-typical social functioning. Systematic study of the endogenous cannabinoid signaling could, therefore, yield novel approaches to understand the neurobiological underpinnings of atypical social functioning...
2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27676126/search-for-plasma-biomarkers-in-drug-free-patients-with-bipolar-disorder-and-schizophrenia-using-metabolome-analysis
#19
Yuki Kageyama, Takaoki Kasahara, Hiromasa Morishita, Nobuko Mataga, Yasuhiko Deguchi, Munehide Tani, Kenji Kuroda, Kotaro Hattori, Sumiko Yoshida, Koki Inoue, Tadafumi Kato
AIM: There is an urgent need for diagnostic biomarkers of bipolar disorder (BD) and schizophrenia (SZ); however, confounding effects of medication hamper biomarker discovery. In this study, we conducted metabolome analyses to identify novel plasma biomarkers in drug-free patients with BD and SZ. METHODS: We comprehensively analyzed plasma metabolites using capillary electrophoresis time-of-flight mass spectrometry in patients with SZ (n = 17), BD (n = 6), and major depressive disorder (n = 9) who had not received psychotropics for at least 2 weeks, and in matched healthy controls (n = 19)...
September 27, 2016: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/27661005/systematically-characterizing-dysfunctional-long-intergenic-non-coding-rnas-in-multiple-brain-regions-of-major-psychosis
#20
Jing Hu, Jinyuan Xu, Lin Pang, Hongying Zhao, Feng Li, Yulan Deng, Ling Liu, Yujia Lan, Xinxin Zhang, Tingting Zhao, Chaohan Xu, Chun Xu, Yun Xiao, Xia Li
Schizophrenia (SZ) and bipolar disorder (BD) are severe neuropsychiatric disorders with serious impact on patients, together termed "major psychosis". Recently, long intergenic non-coding RNAs (lincRNAs) were reported to play important roles in mental diseases. However, little was known about their molecular mechanism in pathogenesis of SZ and BD. Here, we performed RNA sequencing on 82 post-mortem brain tissues from three brain regions (orbitofrontal cortex (BA11), anterior cingulate cortex (BA24) and dorsolateral prefrontal cortex (BA9)) of patients with SZ and BD and control subjects, generating over one billion reads...
September 19, 2016: Oncotarget
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