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Biomarkers psychiatric disorders

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https://www.readbyqxmd.com/read/28330876/electrocorticographic-dynamics-as-a-novel-biomarker-in-five-models-of-epileptogenesis
#1
Dan Z Milikovsky, Itai Weissberg, Lyna Solomon-Kamintsky, Kristina Lippmann, Osnat Schefenbauer, Federica Frigerio, Massimo Rizzi, Liron Sheintuch, Daniel Zelig, Jonathan Ofer, Annamaria Vezzani, Alon Friedman
Post injury epilepsy (PIE) is a devastating sequela of various brain insults. While recent studies offer novel insights into the mechanisms underlying epileptogenesis and discover potential preventive treatments, the lack of PIE biomarkers hinders the clinical implementation of such treatments. Here we explored the biomarker potential of different electrographic features in five models of PIE. Electrocorticographic or intrahippocampal recordings of epileptogenesis (from the insult to the first spontaneous seizure) from two laboratories were analyzed in 3 mouse and 2 rat PIE models...
March 22, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28324704/bxd-recombinant-inbred-strains-participate-in-social-preference-anxiety-and-depression-behaviors-along-sex-differences-in-cytokines-and-tactile-allodynia
#2
Caridad López-Granero, Alessandra Antunes Dos Santos, Beatriz Ferrer, Megan Culbreth, Sudipta Chakraborty, Angel Barrasa, Maria Gulinello, Aaron B Bowman, Michael Aschner
Depression and anxiety are the most common psychiatric disorders, representing a major public health concern. Dysregulation of oxidative and inflammatory systems may be associated with psychiatric disorders, such as depression and anxiety. Due to the need to find appropriate animal models to the understanding of such disorders, we queried whether 2 BXD recombinant inbred (RI) mice strains (BXD21/TyJ RI and BXD84/RwwJ RI mice) and C57BL/6 wild-type mice show differential performance in depression and anxiety related behaviors and biomarkers...
March 6, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28320179/multimodal-and-simultaneous-assessments-of-brain-and-spinal-fluid-abnormalities-in-chronic-fatigue-syndrome-and-the-effects-of-psychiatric-comorbidity
#3
Benjamin H Natelson, Xiangling Mao, Aaron J Stegner, Gudrun Lange, Diana Vu, Michelle Blate, Guoxin Kang, Eli Soto, Tolga Kapusuz, Dikoma C Shungu
The purpose of this study was to investigate whether CFS patients without comorbid psychiatric diagnoses differ from CFS patients with comorbid psychiatric diagnoses and healthy control subjects in neuropsychological performance, the proportion with elevated spinal fluid protein or white cell counts, cerebral blood flow (CBF), brain ventricular lactate and cortical glutathione (GSH). The results of the study did not show any differences in any of the outcome measures between CFS patients with and without psychiatric comorbidity, thus indicating that psychiatric status may not be an exacerbating factor in CFS...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28306543/peripheral-levels-of-bdnf-and-opiate-use-disorder-literature-review-and-update
#4
Raul Felipe Palma-Álvarez, Elena Ros-Cucurull, Kristopher Amaro-Hosey, Laia Rodriguez-Cintas, Lara Grau-López, Margarida Corominas-Roso, Cristina Sánchez-Mora, Carlos Roncero
Several neurobiological factors are related to opiate-use disorder (OUD), and among them, neurotrophins have a relevant role. Brain-derived neurotrophic factor (BDNF) is a central neurotrophin involved in many neuronal processes, and it has been related to several psychiatric diseases and addictive disorders. BDNF can be measured in plasma and serum; its levels may reflect BDNF concentrations in the central nervous system (CNS) and, indirectly, CNS processes. Hence, peripheral BDNF could be a biomarker in clinical practice...
March 17, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/28304335/the-relationship-between-fatty-acids-and-different-depression-related-brain-regions-and-their-potential-role-as-biomarkers-of-response-to-antidepressants
#5
REVIEW
Maria Fernanda Fernandes, David M Mutch, Francesco Leri
Depression is a complex disorder influenced by a variety of biological and environmental factors. Due to significant heterogeneity, there are remarkable differences in how patients respond to treatment. A primary objective of psychiatric research is to identify biological markers that could be used to better predict and enhance responses to antidepressant treatments. Diet impacts various aspects of health, including depression. The fatty acid composition of the Western diet, which has a high ratio of n-6:n-3 polyunsaturated fatty acids, is associated with increased incidence of depression...
March 17, 2017: Nutrients
https://www.readbyqxmd.com/read/28290081/potential-use-of-microrna-for-monitoring-therapeutic-response-to-antidepressants
#6
Raoul Belzeaux, Rixing Lin, Gustavo Turecki
Major depressive disorder (MDD) is a serious and common psychiatric disorder that affects millions of people worldwide. The most common treatment methods for MDD are antidepressant drugs, many of which act by regulating monoamines by inhibiting pre-synaptic reuptake and/or by modulating monoamine receptors. Despite advances in antidepressants and other treatment options, therapy is often based on subjective decisions made by the physician. Moreover, it requires time to determine treatment outcome and to define whether the prescribed treatment is effective...
March 13, 2017: CNS Drugs
https://www.readbyqxmd.com/read/28284170/defining-and-measuring-irritability-construct-clarification-and-differentiation
#7
REVIEW
Michael J Toohey, Raymond DiGiuseppe
Irritability is a symptom of 15 disorders in the DSM-5 and is included in Mood Disorders, Addictive Disorders, Personality Disorders, and more (American Psychiatric Association, 2013). However, the term irritability is defined and measured inconsistently in the scholarly literature. In this article, we reviewed the scholarly definitions of irritability and the item content of irritability measures. Components of definitions and items measuring irritability were divided into three categories: a) causes, b) experience, and c) consequences...
February 1, 2017: Clinical Psychology Review
https://www.readbyqxmd.com/read/28283959/neuroinflammation-in-neurodegenerative-disorders-a-review
#8
REVIEW
Martin Schain, William Charles Kreisl
The potential for positron emission tomography (PET) to detect neuroinflammation in vivo has sparked a remarkable interest in various disciplines of neuroscience. Early PET radioligands, such as [(11)C]PK(R)-11195 for the 18-kDa translocator protein (TSPO) and [(11)C]L-deprenyl for monoamine oxidase B, have been used in studies designed to clarify the role of neuroinflammation in a variety of psychiatric and neurological disorders. Recent years have witnessed the development of several second-generation PET radioligands for TSPO and radioligands to measure endogenous targets that are active in various stages of the inflammatory cascade, such as cyclooxygenase and arachidonic acid...
March 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28259862/-modeling-neurological-and-psychiatric-disorders-in-vitro-using-induced-pluripotent-stem-cells-highlighting-findings-in-alzheimer-s-disease-and-schizophrenia
#9
Edit Hathy, Sara Kalman, Agota Apati, Zsofia Nemoda, Janos M Rethelyi
Over the past decade we witnessed the birth of a new scientific area that lies at the borders of developmental biology, stem cell biology, basic and clinical neuroscience. In vitro disease modeling refers to the approach that exploits the capacity of stem cells for self-renewal and pluripotency by generating specific cell types that are relevant for a given disorder. Based on this method, neurological and psychiatric disorders can be investigated by differentiating stem cells into neurons in a dish, and studying the relevant neuronal populations affected in the pathophysiology of the disorder in terms of specific cellular phenotypes...
December 2016: Neuropsychopharmacologia Hungarica
https://www.readbyqxmd.com/read/28249076/a-consensus-statement-on-the-use-of-ketamine-in-the-treatment-of-mood-disorders
#10
Gerard Sanacora, Mark A Frye, William McDonald, Sanjay J Mathew, Mason S Turner, Alan F Schatzberg, Paul Summergrad, Charles B Nemeroff
Importance: Several studies now provide evidence of ketamine hydrochloride's ability to produce rapid and robust antidepressant effects in patients with mood and anxiety disorders that were previously resistant to treatment. Despite the relatively small sample sizes, lack of longer-term data on efficacy, and limited data on safety provided by these studies, they have led to increased use of ketamine as an off-label treatment for mood and other psychiatric disorders. Observations: This review and consensus statement provides a general overview of the data on the use of ketamine for the treatment of mood disorders and highlights the limitations of the existing knowledge...
March 1, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28236988/-what-can-we-expect-from-clinical-trials-in-psychiatry
#11
A Marsot, Q Boucherie, F Kheloufi, C Riff, D Braunstein, J Dupouey, R Guilhaumou, X Zendjidjian, S Bonin-Guillaume, E Fakra, M Guye, V Jirsa, J-M Azorin, R Belzeaux, M Adida, J Micallef, O Blin
Clinical trials in psychiatry allow to build the regulatory dossiers for market authorization but also to document the mechanism of action of new drugs, to build pharmacodynamics models, evaluate the treatment effects, propose prognosis, efficacy or tolerability biomarkers and altogether to assess the impact of drugs for patient, caregiver and society. However, clinical trials have shown some limitations. Number of recent dossiers failed to convince the regulators. The clinical and biological heterogeneity of psychiatric disorders, the pharmacokinetic and pharmacodynamics properties of the compounds, the lack of translatable biomarkers possibly explain these difficulties...
December 2016: L'Encéphale
https://www.readbyqxmd.com/read/28217089/differential-modulation-of-rhythmic-brain-activity-in-healthy-adults-by-a-t-type-calcium-channel-blocker-an-meg-study
#12
Kerry D Walton, Emeline L Maillet, John Garcia, Timothy Cardozo, Isaac Galatzer-Levy, Rodolfo R Llinás
1-octanol is a therapeutic candidate for disorders involving the abnormal activation of the T-type calcium current since it blocks this current specifically. Such disorders include essential tremor and a group of neurological and psychiatric disorders resulting from thalamocortical dysrhythmia (TCD). For example, clinically, the observable phenotype in essential tremor is the tremor itself. The differential diagnostic of TCD is not based only on clinical signs and symptoms. Rather, TCD incorporates an electromagnetic biomarker, the presence of abnormal thalamocortical low frequency brain oscillations...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28216256/kleine-levin-syndrome
#13
REVIEW
Olufunke Afolabi-Brown, Thornton B A Mason
Kleine-Levin syndrome (KLS) is a rare disorder characterized by discrete episodes of hypersomnia associated with cognitive and behavioural abnormalities, as well as normal alertness and function between episodes. The prevalence of KLS may be underestimated as it is often misdiagnosed and managed as another sleep disorder, neurological disorder or psychiatric condition. KLS is more typically seen in adolescence than at other ages, and is more common in males than in females. There are currently neither standard biomarkers nor specific imaging study findings, making the diagnosis of KLS a challenge...
December 23, 2016: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/28205606/differential-abnormal-pattern-of-anterior-cingulate-gyrus-activation-in-unipolar-and-bipolar-depression-an-fmri-and-pattern-classification-approach
#14
Christian Bürger, Ronny Redlich, Dominik Grotegerd, Susanne Meinert, Katharina Dohm, Ilona Schneider, Dario Zaremba, Katharina Förster, Judith Alferink, Jens Bölte, Walter Heindel, Harald Kugel, Volker Arolt, Udo Dannlowski
Distinguishing bipolar disorder from major depressive disorder is a major challenge in psychiatric treatment. Consequently, there has been growing interest in identifying neuronal biomarkers of disorder-specific pathophysiological processes to differentiate affective disorders. Thirty-six depressed bipolar patients, 36 depressed unipolar patients and 36 matched healthy controls participated in an fMRI-experiment. Emotional faces served as stimuli in a matching task. We investigated neural activation towards angry, fearful and happy faces focusing on prototypical regions related to emotion processing, ie the amygdala and the anterior cingulate gyrus (ACG)...
February 16, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28195577/hippocampus-glutamate-and-n-acetyl-aspartate-markers-of-excitotoxic-neuronal-compromise-in-posttraumatic-stress-disorder
#15
Isabelle M Rosso, David J Crowley, Marisa M Silveri, Scott L Rauch, J Eric Jensen
Hippocampus atrophy is implicated in posttraumatic stress disorder (PTSD), and may partly reflect stress-induced glutamate excitotoxicity that culminates in neuron injury and manifests as re-experiencing symptoms and other memory abnormalities. This study used high-field proton magnetic resonance spectroscopy (MRS) to determine whether PTSD is associated with lower hippocampus levels of the neuron marker N-acetyl aspartate (NAA), along with higher levels of glutamate (Glu) and Glu/NAA. We also predicted that metabolite levels would correlate with re-experiencing symptoms and lifetime trauma load...
February 13, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28195241/brain-fingerprints-of-olfaction-a-novel-structural-method-for-assessing-olfactory-cortical-networks-in-health-and-disease
#16
A Fjaeldstad, H M Fernandes, T J Van Hartevelt, C Gleesborg, A Møller, T Ovesen, M L Kringelbach
Olfactory deficits are a common (often prodromal) symptom of neurodegenerative or psychiatric disorders. As such, olfaction could have great potential as an early biomarker of disease, for example using neuroimaging to investigate the breakdown of structural connectivity profile of the primary olfactory networks. We investigated the suitability for this purpose in two existing neuroimaging maps of olfactory networks. We found problems with both existing neuroimaging maps in terms of their structural connectivity to known secondary olfactory networks...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28194132/molecular-imaging-markers-to-track-huntington-s-disease-pathology
#17
REVIEW
Heather Wilson, Rosa De Micco, Flavia Niccolini, Marios Politis
Huntington's disease (HD) is a progressive, monogenic dominant neurodegenerative disorder caused by repeat expansion mutation in the huntingtin gene. The accumulation of mutant huntingtin protein, forming intranuclear inclusions, subsequently leads to degeneration of medium spiny neurons in the striatum and cortical areas. Genetic testing can identify HD gene carriers before individuals develop overt cognitive, psychiatric, and chorea symptoms. Thus, HD gene carriers can be studied in premanifest stages to understand and track the evolution of HD pathology...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28186315/sleep-study-in-disruptive-mood-dysregulation-disorder-and-bipolar-children
#18
Xavier Estrada-Prat, Ion Álvarez-Guerrico, María J Bleda-Hernández, Ester Camprodon-Rosanas, Santiago Batlle-Vila, Elena Pujals-Altes, María T Nascimento-Osorio, Luís M Martín-López, Enric Álvarez-Martínez, Víctor Pérez-Solá, Soledad Romero-Cela
INTRODUCTION: Decreased need for sleep has been proposed as a core symptom of mania and it has been associated with the pathogenesis of Bipolar Disorder. The emergence of Disruptive Mood Dysregulation Disorder (DMDD) as a new diagnostic has been controversial and much has been speculated about its relationship with the bipolar spectrum. REM sleep fragmentation could be a biomarker of affective disorders and it would help us to differentiate them from other disorders. METHOD: Polysomnographic cross-sectional study of children with DMDD, bipolar disorder and Attention Deficit Hyperactivity Disorder (ADHD)...
January 2017: Actas Españolas de Psiquiatría
https://www.readbyqxmd.com/read/28174528/anxious-individuals-are-impulsive-decision-makers-in-the-delay-discounting-task-an-erp-study
#19
Lisheng Xia, Ruolei Gu, Dandan Zhang, Yuejia Luo
Impulsivity, which is linked to a wide range of psychiatric disorders, is often characterized by a preference for immediate but smaller rewards over delayed but larger rewards. However, debate exists on the relationship between anxiety and impulsivity. Here we use event-related potential (ERP) components as biomarkers in the temporal discounting task to examine the effect of anxiety on inter-temporal decision-making. Our behavioral results indicated that the high trait anxiety (HTA) group made significantly more immediate choices than the low trait anxiety (LTA) group...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28174132/traumatic-brain-injury-induces-genome-wide-transcriptomic-methylomic-and-network-perturbations-in-brain-and-blood-predicting-neurological-disorders
#20
Qingying Meng, Yumei Zhuang, Zhe Ying, Rahul Agrawal, Xia Yang, Fernando Gomez-Pinilla
The complexity of the traumatic brain injury (TBI) pathology, particularly concussive injury, is a serious obstacle for diagnosis, treatment, and long-term prognosis. Here we utilize modern systems biology in a rodent model of concussive injury to gain a thorough view of the impact of TBI on fundamental aspects of gene regulation, which have the potential to drive or alter the course of the TBI pathology. TBI perturbed epigenomic programming, transcriptional activities (expression level and alternative splicing), and the organization of genes in networks centered around genes such as Anax2, Ogn, and Fmod...
February 2017: EBioMedicine
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