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Biomarkers in Psychiatry

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https://www.readbyqxmd.com/read/28064175/neuroimaging-of-inflammation-in-memory-and-related-other-disorders-nimrod-study-protocol-a-deep-phenotyping-cohort-study-of-the-role-of-brain-inflammation-in-dementia-depression-and-other-neurological-illnesses
#1
W Richard Bevan-Jones, Ajenthan Surendranathan, Luca Passamonti, Patricia Vázquez Rodríguez, Robert Arnold, Elijah Mak, Li Su, Jonathan P Coles, Tim D Fryer, Young T Hong, Guy Williams, Franklin Aigbirhio, James B Rowe, John T O'Brien
INTRODUCTION: Inflammation of the central nervous system is increasingly regarded as having a role in cognitive disorders such as dementia and depression, but it is not clear how such inflammation relates to other aspects of neuropathology, structural and functional changes in the brain and symptoms (as assessed via clinical and neuropsychological assessment and MRI). This study will explore these pathophysiological mechanisms using positron emission tomography (PET) which allows in vivo imaging of inflammation, amyloid and τ deposition, together with neuropsychological profiling, MRI and peripheral biomarker analysis...
January 7, 2017: BMJ Open
https://www.readbyqxmd.com/read/28049075/abnormal-brain-oscillations-persist-after-recovery-from-bipolar-depression
#2
P Canali, S Casarotto, M Rosanova, G Sferrazza-Papa, A G Casali, O Gosseries, M Massimini, E Smeraldi, C Colombo, F Benedetti
When directly perturbed in healthy subjects, premotor cortical areas generate electrical oscillations in the beta range (20-40Hz). In schizophrenia, major depressive disorder and bipolar disorder (BD), these oscillations are markedly reduced, in terms of amplitude and frequency. However, it still remains unclear whether these abnormalities can be modulated over time, or if they can be still observed after treatment. Here, we employed transcranial magnetic stimulation (TMS) combined with EEG to assess the frontal oscillatory activity in eighteen BD patients before/after antidepressant treatments (sleep deprivation and light therapy), relative to nine healthy controls...
December 27, 2016: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28032396/computational-neuroscience-approach-to-biomarkers-and-treatments-for-mental-disorders
#3
Noriaki Yahata, Kiyoto Kasai, Mitsuo Kawato
Psychiatry research has long experienced a stagnation stemming from a lack of understanding of the neurobiological underpinnings of phenomenologically defined mental disorders. Recently, the application of computational neuroscience to psychiatry research has shown great promise in establishing a link between phenomenological and pathophysiological aspects of mental disorders, thereby recasting current nosology in more biologically meaningful dimensions. In this review, we highlight recent investigations in computational neuroscience that undertook either theory- or data-driven approaches to quantitatively delineate the mechanisms of mental disorders...
December 29, 2016: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/28025607/tonsillectomy-remains-a-questionable-option-for-pediatric-autoimmune-neuropsychiatric-disorders-associated-with-streptococcal-infections-pandas
#4
REVIEW
Jochen P Windfuhr
Background: Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS) is a disease attributed to children with obsessive compulsive disorders (OCD) or tic disorders associated with streptococcal infections. Because otolaryngologists examine a large number of pediatric patients with recurrent streptococcal infections, tonsillectomy (TE) is a common option of therapy. This study was conducted to evaluate the efficacy of TE in patients presenting with verified PANDAS. Material and methods: A PubMed review was performed using search terms "tonsillectomy" and "PANDAS", "OCD", "compulsive" "pediatric autoimmune", "chorea" and "tic" limited by publication date of January 1, 1995, to July 31, 2015...
2016: GMS Current Topics in Otorhinolaryngology, Head and Neck Surgery
https://www.readbyqxmd.com/read/28009246/locating-risk-in-the-adolescent-brain-ethical-challenges-in-the-use-of-biomarkers-for-adolescent-health-and-social-policy
#5
Suparna Choudhury, Sheehan Moore
Technological developments in neuroscience over the last 20 years have generated excitement about the potential of neuroscientific insights for the understanding of and intervention in children's and adolescents' behavior. This article introduces some ways in which new results from developmental cognitive neuroscience have been appropriated in the context of adolescent mental health. We also consider social and interpersonal factors that drive the use of neurobiological markers of mental disorders in pediatric psychiatry...
December 1, 2016: AMA Journal of Ethics
https://www.readbyqxmd.com/read/27990322/recent-advances-and-controversies-in-peripartum-depression
#6
Jennifer L Payne
PURPOSE OF REVIEW: The purpose of this review is to update readers on recent controversies and findings on the underlying biology and clinical management of peripartum depression. RECENT FINDINGS: Topics discussed include the discovery and replication of two epigenetic biomarkers of peripartum depression, two well controlled studies that do NOT find associations between in utero antidepressant exposure and cardiac defects and persistent pulmonary hypertension of the newborn and ongoing controversy on whether antidepressant use during pregnancy prevents peripartum depression and whether or not hormonal treatments have a place in the management of postpartum depression...
September 2016: Current Obstetrics and Gynecology Reports
https://www.readbyqxmd.com/read/27956742/17q21-31-duplication-causes-prominent-tau-related-dementia-with-increased-mapt-expression
#7
K Le Guennec, O Quenez, G Nicolas, D Wallon, S Rousseau, A-C Richard, J Alexander, P Paschou, C Charbonnier, C Bellenguez, B Grenier-Boley, D Lechner, M-T Bihoreau, R Olaso, A Boland, V Meyer, J-F Deleuze, P Amouyel, H M Munter, G Bourque, M Lathrop, T Frebourg, R Redon, L Letenneur, J-F Dartigues, O Martinaud, O Kalev, S Mehrabian, L Traykov, T Ströbel, I Le Ber, P Caroppo, S Epelbaum, T Jonveaux, F Pasquier, A Rollin-Sillaire, E Génin, L Guyant-Maréchal, G G Kovacs, J-C Lambert, D Hannequin, D Campion, A Rovelet-Lecrux
To assess the role of rare copy number variations in Alzheimer's disease (AD), we conducted a case-control study using whole-exome sequencing data from 522 early-onset cases and 584 controls. The most recurrent rearrangement was a 17q21.31 microduplication, overlapping the CRHR1, MAPT, STH and KANSL1 genes that was found in four cases, including one de novo rearrangement, and was absent in controls. The increased MAPT gene dosage led to a 1.6-1.9-fold expression of the MAPT messenger RNA. Clinical signs, neuroimaging and cerebrospinal fluid biomarker profiles were consistent with an AD diagnosis in MAPT duplication carriers...
December 13, 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/27918562/resting-state-connectivity-biomarkers-define-neurophysiological-subtypes-of-depression
#8
Andrew T Drysdale, Logan Grosenick, Jonathan Downar, Katharine Dunlop, Farrokh Mansouri, Yue Meng, Robert N Fetcho, Benjamin Zebley, Desmond J Oathes, Amit Etkin, Alan F Schatzberg, Keith Sudheimer, Jennifer Keller, Helen S Mayberg, Faith M Gunning, George S Alexopoulos, Michael D Fox, Alvaro Pascual-Leone, Henning U Voss, B J Casey, Marc J Dubin, Conor Liston
Biomarkers have transformed modern medicine but remain largely elusive in psychiatry, partly because there is a weak correspondence between diagnostic labels and their neurobiological substrates. Like other neuropsychiatric disorders, depression is not a unitary disease, but rather a heterogeneous syndrome that encompasses varied, co-occurring symptoms and divergent responses to treatment. By using functional magnetic resonance imaging (fMRI) in a large multisite sample (n = 1,188), we show here that patients with depression can be subdivided into four neurophysiological subtypes ('biotypes') defined by distinct patterns of dysfunctional connectivity in limbic and frontostriatal networks...
January 2017: Nature Medicine
https://www.readbyqxmd.com/read/27843151/a-dna-methylation-biomarker-of-alcohol-consumption
#9
C Liu, R E Marioni, Å K Hedman, L Pfeiffer, P-C Tsai, L M Reynolds, A C Just, Q Duan, C G Boer, T Tanaka, C E Elks, S Aslibekyan, J A Brody, B Kühnel, C Herder, L M Almli, D Zhi, Y Wang, T Huan, C Yao, M M Mendelson, R Joehanes, L Liang, S-A Love, W Guan, S Shah, A F McRae, A Kretschmer, H Prokisch, K Strauch, A Peters, P M Visscher, N R Wray, X Guo, K L Wiggins, A K Smith, E B Binder, K J Ressler, M R Irvin, D M Absher, D Hernandez, L Ferrucci, S Bandinelli, K Lohman, J Ding, L Trevisi, S Gustafsson, J H Sandling, L Stolk, A G Uitterlinden, I Yet, J E Castillo-Fernandez, T D Spector, J D Schwartz, P Vokonas, L Lind, Y Li, M Fornage, D K Arnett, N J Wareham, N Sotoodehnia, K K Ong, J B J van Meurs, K N Conneely, A A Baccarelli, I J Deary, J T Bell, K E North, Y Liu, M Waldenberger, S J London, E Ingelsson, D Levy
The lack of reliable measures of alcohol intake is a major obstacle to the diagnosis and treatment of alcohol-related diseases. Epigenetic modifications such as DNA methylation may provide novel biomarkers of alcohol use. To examine this possibility, we performed an epigenome-wide association study of methylation of cytosine-phosphate-guanine dinucleotide (CpG) sites in relation to alcohol intake in 13 population-based cohorts (ntotal=13 317; 54% women; mean age across cohorts 42-76 years) using whole blood (9643 European and 2423 African ancestries) or monocyte-derived DNA (588 European, 263 African and 400 Hispanic ancestry) samples...
November 15, 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/27816667/correlation-between-brain-damage-associated-biomarkers-and-medication-in-psychiatric-inpatients-a-cross-sectional-study
#10
Madoka Yoshida, Tetsuto Kanzaki, Mutsumi Mizoi, Mizuho Nakamura, Takeshi Uemura, Seisuke Mimori, Yoriyasu Uju, Keisuke Sekine, Yukihiro Ishii, Taro Yoshimi, Reiko Yasui, Asuka Yasukawa, Mamoru Sato, Seiko Okamoto, Tetsuya Hisaoka, Masafumi Miura, Shun Kusanishi, Kanako Murakami, Chieko Nakano, Yasuhiko Mizuta, Shunichi Mishima, Tatsuro Hayakawa, Kazumi Tsukada, Keiko Kashiwagi, Kazuei Igarashi
BACKGROUND: We clarified the correlation between brain damage, associated biomarkers and medication in psychiatric patients, because patients with schizophrenia have an increased risk of stroke. METHODS: The cross-sectional study was performed from January 2013 to December 2015. Study participants were 96 hospitalized patients (41 men and 55 women) in the Department of Psychiatry at Kohnodai Hospital, National Center for Global Health and Medicine, Ichikawa, Chiba, Japan...
January 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/27810706/how-to-measuring-blood-cytokines-in-biological-psychiatry-using-commercially-available-multiplex-immunoassays
#11
Raoul Belzeaux, Marie-Noëlle Lefebvre, Anne Lazzari, Tifenn Le Carpentier, Julia-Lou Consoloni, Xavier Zendjidjian, Mocrane Abbar, Philippe Courtet, Jean Naudin, José Boucraut, Pierre Gressens, Nicolas Glaichenhaus, El Chérif Ibrahim
Cytokines produced by both immune and non-immune cells are likely to play roles in the development and/or progression of psychiatric disorders. Indeed, many investigators have compared the blood cytokine levels in psychiatric patients with those of healthy controls or monitored their levels in patients during disease progression to identify biomarkers. Nevertheless, very few studies have confirmed that such cytokines remain stable in healthy individuals through periods of weeks and months. This is an important issue to consider before using blood cytokine levels as biomarkers of disease traits, disease state, or treatment response...
January 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27788673/immuno-psychiatry-an-agenda-for-clinical-practice-and-innovative-research
#12
EDITORIAL
Marion Leboyer, Michael Berk, Robert H Yolken, Ryad Tamouza, David Kupfer, Laurent Groc
BACKGROUND: The diagnostic scheme for psychiatric disorders is currently based purely on descriptive nomenclature given that biomarkers subtypes and clearly defined causal mechanisms are lacking for the vast majority of disorders. The emerging field of "immuno-psychiatry" has the potential to widen the exploration of a mechanism-based nosology, possibly leading to the discovery of more effective personalised treatment strategies. DISCUSSION: Disturbances in immuno-inflammatory and related systems have been implicated in the aetiology, pathophysiology, phenomenology and comorbidity of several psychiatric disorders, including major mood disorders and schizophrenia...
October 28, 2016: BMC Medicine
https://www.readbyqxmd.com/read/27784534/toward-understanding-thalamocortical-dysfunction-in-schizophrenia-through-computational-models-of-neural-circuit-dynamics
#13
REVIEW
John D Murray, Alan Anticevic
The thalamus is implicated in the neuropathology of schizophrenia, and multiple modalities of noninvasive neuroimaging provide converging evidence for altered thalamocortical dynamics in the disorder, such as functional connectivity and oscillatory power. However, it remains a challenge to link these neuroimaging biomarkers to underlying neural circuit mechanisms. One potential path forward is a "Computational Psychiatry" approach that leverages computational models of neural circuits to make predictions for the dynamical impact dynamical impact on specific thalamic disruptions hypothesized to occur in the pathophysiology of schizophrenia...
October 23, 2016: Schizophrenia Research
https://www.readbyqxmd.com/read/27783066/the-search-for-imaging-biomarkers-in-psychiatric-disorders
#14
Anissa Abi-Dargham, Guillermo Horga
The field of medicine is moving toward the use of biomarkers for the optimization of individualized care. This is a particular challenge for the field of psychiatry, in which diagnosis is based on a descriptive collection of behaviors without the availability of any objective test to stratify patients. Neuroimaging techniques such as molecular imaging with positron-emission tomography (PET) or structural and functional magnetic resonance imaging (MRI) provide an opportunity to bring psychiatry from an era of subjective descriptive classification into objective and tangible brain-based measures...
November 2016: Nature Medicine
https://www.readbyqxmd.com/read/27698428/predicting-the-functional-states-of-human-ipsc-derived-neurons-with-single-cell-rna-seq-and-electrophysiology
#15
C Bardy, M van den Hurk, B Kakaradov, J A Erwin, B N Jaeger, R V Hernandez, T Eames, A A Paucar, M Gorris, C Marchand, R Jappelli, J Barron, A K Bryant, M Kellogg, R S Lasken, B P F Rutten, H W M Steinbusch, G W Yeo, F H Gage
Human neural progenitors derived from pluripotent stem cells develop into electrophysiologically active neurons at heterogeneous rates, which can confound disease-relevant discoveries in neurology and psychiatry. By combining patch clamping, morphological and transcriptome analysis on single-human neurons in vitro, we defined a continuum of poor to highly functional electrophysiological states of differentiated neurons. The strong correlations between action potentials, synaptic activity, dendritic complexity and gene expression highlight the importance of methods for isolating functionally comparable neurons for in vitro investigations of brain disorders...
November 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/27573877/novel-roles-of-amyloid-beta-precursor-protein-metabolites-in-fragile-x-syndrome-and-autism
#16
REVIEW
C J Westmark, D K Sokol, B Maloney, D K Lahiri
Fragile X syndrome (FXS) is the most common form of inherited intellectual disability and is associated with up to 5% of autism cases. Several promising drugs are in preclinical testing for FXS; however, bench-to-bedside plans for the clinic are severely limited due to lack of validated biomarkers and outcome measures. Published work from our laboratories has demonstrated altered levels of amyloid-beta (Aβ) precursor protein (APP) and its metabolites in FXS and idiopathic autism. Westmark and colleagues have focused on β-secretase (amyloidogenic) processing and the accumulation of Aβ peptides in adult FXS models, whereas Lahiri and Sokol have studied α-secretase (non-amyloidogenic or anabolic) processing and altered levels of sAPPα and Aβ in pediatric autism and FXS...
October 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/27566494/does-environmental-exposure-to-the-greenhouse-gas-n2o-contribute-to-etiological-factors-in-neurodevelopmental-disorders-a-mini-review-of-the-evidence
#17
REVIEW
Keith Fluegge
BACKGROUND: Neurodevelopmental disorders are increasing in prevalence worldwide. Previous work suggests that exposure to the environmental air pollutant and greenhouse gas - nitrous oxide (N2O) - may be an etiological factor in neurodevelopmental disorders through the targeting of several neural correlates. METHODOLOGY: While a number of recent systematic reviews have addressed the role of general anesthesia in the surgical setting and neurodevelopmental outcomes, a narrative mini-review was conducted to first define and characterize the relevant variables (i...
October 2016: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/27564242/personalized-medicine-in-psychiatry
#18
Ida Kim Wium-Andersen, Maj Vinberg, Lars Vedel Kessing, Roger S McIntyre
BACKGROUND: Personalized medicine is a model in which a patient's unique clinical, genetic, and environmental characteristics are the basis for treatment and prevention. Aim, method, and results: This review aims to describe the current tools, phenomenological features, clinical risk factors, and biomarkers used to provide personalized medicine. Furthermore, this study describes the target areas in which they can be applied including diagnostics, treatment selection and response, assessment of risk of side-effects, and prevention...
January 2017: Nordic Journal of Psychiatry
https://www.readbyqxmd.com/read/27536015/biomarkers-in-psychiatry-a-critique
#19
Ganesan Venkatasubramanian, Matcheri S Keshavan
No abstract text is available yet for this article.
March 2016: Annals of Neurosciences
https://www.readbyqxmd.com/read/27504098/can-interoception-improve-the-pragmatic-search-for-biomarkers-in-psychiatry
#20
REVIEW
Sahib S Khalsa, Rachel C Lapidus
Disrupted interoception is a prominent feature of the diagnostic classification of several psychiatric disorders. However, progress in understanding the interoceptive basis of these disorders has been incremental, and the application of interoception in clinical treatment is currently limited to panic disorder. To examine the degree to which the scientific community has recognized interoception as a construct of interest, we identified and individually screened all articles published in the English language on interoception and associated root terms in Pubmed, Psychinfo, and ISI Web of Knowledge...
2016: Frontiers in Psychiatry
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