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https://www.readbyqxmd.com/read/27908981/neurotrophin-signalling-novel-insights-into-mechanisms-and-pathophysiology
#1
REVIEW
Mariela Mitre, Abigail Mariga, Moses V Chao
Neurotrophins, such as brain-derived neurotrophic factor (BDNF), are prominent regulators of neuronal survival, growth and differentiation during development. While trophic factors are viewed as well-understood but not innovative molecules, there are many lines of evidence indicating that BDNF plays an important role in the pathophysiology of many neurodegenerative disorders, depression, anxiety and other psychiatric disorders. In particular, lower levels of BDNF are associated with the aetiology of Alzheimer's and Huntington's diseases...
January 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/27908295/dopamine-2-receptor-extracellular-n-terminus-regulates-receptor-surface-availability-and-is-the-target-of-human-pathogenic-antibodies-from-children-with-movement-and-psychiatric-disorders
#2
Nese Sinmaz, Fiona Tea, Deepti Pilli, Alicia Zou, Mazen Amatoury, Tina Nguyen, Vera Merheb, Sudarshini Ramanathan, Sandra T Cooper, Russell C Dale, Fabienne Brilot
Anti-Dopamine-2 receptor (D2R) antibodies have been recently identified in a subgroup of children with autoimmune movement and psychiatric disorders, however the epitope(s) and mechanism of pathogenicity remain unknown. Here we report a major biological role for D2R extracellular N-terminus as a regulator of receptor surface availability, and as a major epitope targeted and impaired in brain autoimmunity. In transfected human cells, purified anti-D2R antibody from patients specifically and significantly reduced human D2R surface levels...
December 1, 2016: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/27903845/protein-biomarkers-of-mood-disorders
#3
EDITORIAL
Carmen Rodríguez Cerdeira, Elena Sánchez-Blanco, Beatriz Sánchez-Blanco, Jose Luis González-Cespón
Psychiatric evaluation presents a significant challenge because it conceptually integrates the input from multiple psychopathological approaches. Recent technological advances in the study of protein structure, function, and interactions have provided a breakthrough in the diagnosis and treatment of mood disorders (MD), and have identified novel biomarkers to be used as indicators of normal and disease states or response to drug treatment. The investigation of biomarkers for psychiatric disorders, such as enzymes (catechol-O-methyl transferase and monoamine oxidases) or neurotransmitters (dopamine, serotonin, norepinephrine) and their receptors, particularly their involvement in neuroendocrine activity, brain structure, and function, and response to psychotropic drugs, should facilitate the diagnosis of MD...
November 30, 2016: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/27900495/developing-research-collaborations-in-an-academic-clinical-setting-challenges-and-lessons-learned
#4
John A Sahs, Andel V Nicasio, Joan E Storey, Peter J Guarnaccia, Roberto Lewis-Fernández
Research collaboration in "real world" practice settings may enhance the meaningfulness of the findings and reduce barriers to implementation of novel intervention strategies. This study describes an initiative to integrate research into a hospital-based outpatient psychiatric clinic within an academic medical center, focusing on collaborative processes across three research projects. We report on the varied outcomes of the projects and utilize data from two focus groups to identify the key elements that contributed to the challenges and successes...
November 29, 2016: Community Mental Health Journal
https://www.readbyqxmd.com/read/27897326/exploring-the-effectiveness-of-combined-mentalization-based-group-therapy-and-dialectical-behaviour-therapy-for-inpatients-with-borderline-personality-disorder-a-pilot-study
#5
Marc-Andreas Edel, Vanessa Raaff, Giancarlo Dimaggio, Anna Buchheim, Martin Brüne
OBJECTIVES: Borderline personality disorder (BPD) is characterized by emotional instability, interpersonal dysfunction, and other features that typically develop before a background of insecure attachment and traumatic experiences. Dialectical behaviour therapy (DBT) has proven highly effective in reducing self-harm and improving emotion regulation, whereby problems concerning social cognition, which are also characteristic of BPD, may need additional approaches such as mentalization-based treatment (MBT)...
November 29, 2016: British Journal of Clinical Psychology
https://www.readbyqxmd.com/read/27896755/the-application-of-multiplex-biomarker-techniques-for-improved-stratification-and-treatment-of-schizophrenia-patients
#6
Johann Steiner, Paul C Guest, Hassan Rahmoune, Daniel Martins-de-Souza
In the case of major psychiatric disorders such as schizophrenia, shortcomings in the conversion of scientific discoveries into newer and safer treatment options has led to a loss of confidence and precipitated a crisis for large pharmaceutical companies. This chapter describes how incorporation of multiplex biomarker approaches into the clinical pipeline can lead to better patient characterization, delivery of novel treatment approaches and help to renew efforts in this important area. The development of specific biomarker test panels for disease prediction should facilitate early intervention strategies, which may help to slow disease development or progression...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27893572/pain-management-in-pediatric-burn-patients-review-of-recent-literature-and-future-directions
#7
Omar Pardesi, Gennadiy Fuzaylov
Childhood burns are a profoundly traumatic and painful experience. Despite recognition of the prevalence of burn injuries in children and the severity of the associated pain, burn pain remains undertreated. At the same time, more evidence is emerging to suggest that undertreated pain has serious long-term medical and psychiatric consequences, many of which can be ameliorated with improved pain control. Pain in burn patients is, however, notoriously difficult to treat, perhaps because there is a chronic pain aspect underlying the acute pain that accompanies wound care and procedures...
November 17, 2016: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/27888502/a-novel-c132-134del-mutation-in-unverricht-lundborg-disease-and-the-review-of-literature-of-heterozygous-compound-patients
#8
Giovanni Assenza, Antonella Benvenga, Elena Gennaro, Mario Tombini, Chiara Campana, Federica Assenza, Giovanni Di Pino, Vincenzo Di Lazzaro
Unverricht-Lundborg disease or progressive myoclonic epilepsy type 1 (EPM1) is an autosomal recessive disease caused by mutation of the cystatin B gene (CSTB), located on chromosome 21q22.3. The most common mutation is an expansion of unstable dodecamer repetition (CCCCGCCCCGCG), whereas other types of mutations are rare. Among these, heterozygous compound mutations are described to induce a more severe phenotype than that of homozygous dodecameric repetition. We report two siblings affected by heterozygous compound mutations carrying a novel mutation of the deletion of three nucleotides in exon 2 of the gene in position 132-134 of the coding sequence (c...
November 26, 2016: Epilepsia
https://www.readbyqxmd.com/read/27884623/relationship-between-toxoplasma-gondii-seropositivity-and-acoustic-startle-response-in-an-inner-city-population
#9
Nick M Massa, Erica Duncan, Tanja Jovanovic, Kimberly Kerley, Lei Weng, Lauren Gensler, Samuel S Lee, Seth Norrholm, Abigail Powers, Lynn M Almli, Charles F Gillespie, Kerry Ressler, Bradley D Pearce
Toxoplasma gondii (TOXO) is a neuroinvasive protozoan parasite that induces the formation of persistent cysts in mammalian brains. It infects approximately 1.1 million people in the United States annually. Latent TOXO infection is implicated in the etiology of psychiatric disorders, especially schizophrenia (Scz), and has been correlated with modestly impaired cognition. The acoustic startle response (ASR) is a reflex seen in all mammals. It is mediated by a simple subcortical circuit, and provides an indicator of neural function...
November 21, 2016: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/27883250/3d-tract-specific-local-and-global-analysis-of-white-matter-integrity-in-alzheimer-s-disease
#10
Yan Jin, Chao Huang, Madelaine Daianu, Liang Zhan, Emily L Dennis, Robert I Reid, Clifford R Jack, Hongtu Zhu, Paul M Thompson
Alzheimer's disease (AD) is a chronic neurodegenerative disease characterized by progressive decline in memory and other aspects of cognitive function. Diffusion-weighted imaging (DWI) offers a non-invasive approach to delineate the effects of AD on white matter (WM) integrity. Previous studies calculated either some summary statistics over regions of interest (ROI analysis) or some statistics along mean skeleton lines (Tract Based Spatial Statistic [TBSS]), so they cannot quantify subtle local WM alterations along major tracts...
November 24, 2016: Human Brain Mapping
https://www.readbyqxmd.com/read/27882523/simulation-in-undergraduate-psychiatry-exploring-the-depth-of-learner-engagement
#11
REVIEW
Petal S Abdool, Latika Nirula, Sarah Bonato, Tarek K Rajji, Ivan L Silver
OBJECTIVES: Simulation-based methodologies are increasingly used in undergraduate medical education to expand students' exposure to complex clinical scenarios. Engagement of students in these simulation-based methodologies is a key determinant of their success in learning. Thus, the authors conducted a systematic review to (1) identify simulation methods in use within the undergraduate psychiatry curriculum and (2) assess learner engagement using these methods. METHODS: Following a PRISMA methodology, the authors searched MEDLINE, ERIC, and PsychINFO databases from 1977 to 2015...
November 23, 2016: Academic Psychiatry
https://www.readbyqxmd.com/read/27877000/psychiatric-aspects-of-toxoplasmosis-an-indian-perspective
#12
Ajish G Mangot
Toxoplasma gondii is one of the well-studied parasites because of its medical and veterinary importance, and its suitability as a model for cell biology and molecular studies. Latent toxoplasmosis in an immunocompetent host was considered benign until recently. The importance of this parasite has been steadily rising in the field of psychiatry and neurology as it has been implicated in numerous neuropsychiatric disorders. Researchers in India have unfortunately restricted themselves to finding the prevalence of toxoplasma antibodies in special populations and animals...
December 2016: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/27875954/how-immune-inflammatory-processes-link-cns-and-psychiatric-disorders-classification-and-treatment-implications
#13
George Anderson, Michael Maes
In this article the emerging biological overlaps of CNS disorders and psychiatric conditions are reviewed. Recent work has highlighted how immune-inflammatory processes and their interactions with oxidative and nitrosative stress, couple to drive changes in neuroregulatory tryptophan catabolites, with consequences for serotonin availability, including as a precursor for the melatonergic pathways. Subsequent alterations in the regulation of local melatonin synthesis are likely to have direct impacts on the reactivity of immune cells, both centrally and systemically...
November 22, 2016: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/27874848/the-human-bdnf-gene-peripheral-gene-expression-and-protein-levels-as-biomarkers-for-psychiatric-disorders
#14
REVIEW
A Cattaneo, N Cattane, V Begni, C M Pariante, M A Riva
Brain-derived neurotrophic factor (BDNF) regulates the survival and growth of neurons, and influences synaptic efficiency and plasticity. The human BDNF gene consists of 11 exons, and distinct BDNF transcripts are produced through the use of alternative promoters and splicing events. The majority of the BDNF transcripts can be detected not only in the brain but also in the blood cells, although no study has yet investigated the differential expression of BDNF transcripts at the peripheral level. This review provides a description of the human BDNF gene structure as well as a summary of clinical and preclinical evidence supporting the role of BDNF in the pathogenesis of psychiatric disorders...
November 22, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27870416/sex-specific-mechanisms-for-responding-to-stress
#15
REVIEW
Debra A Bangasser, Brittany Wicks
Posttraumatic stress disorder and major depression share stress as an etiological contributor and are more common in women than in men. Traditionally, preclinical studies investigating the neurobiological underpinnings of stress vulnerability have used only male rodents; however, recent studies that include females are finding sex-specific mechanisms for responding to stress. This Mini-Review examines recent literature using a framework developed by McCarthy and colleagues (2012; J Neurosci 32:2241-2247) that highlights different types of sex differences...
January 2, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27866330/human-gut-microbiota-the-links-with-dementia-development
#16
REVIEW
Rashad Alkasir, Jing Li, Xudong Li, Miao Jin, Baoli Zhu
Dementia is a comprehensive category of brain diseases that is great enough to affect a person's daily functioning. The most common type of dementia is Alzheimer's disease, which makes most of cases. New researches indicate that gastrointestinal tract microbiota are directly linked to dementia pathogenesis through triggering metabolic diseases and low-grade inflammation progress. A novel strategy is proposed for the management of these disorders and as an adjuvant for psychiatric treatment of dementia and other related diseases through modulation of the microbiota (e...
November 19, 2016: Protein & Cell
https://www.readbyqxmd.com/read/27866044/alternative-splicing-of-smpd1-coding-for-acid-sphingomyelinase-in-major-depression
#17
Cosima Rhein, Martin Reichel, Marcel Kramer, Andrea Rotter, Bernd Lenz, Christiane Mühle, Erich Gulbins, Johannes Kornhuber
BACKGROUND: Major depressive disorder (MDD) is a psychiatric disorder characterized by key symptoms that include depressed mood and a loss of interest and pleasure. A recently developed pathogenic model of MDD involves disturbed neurogenesis in the hippocampus, where the acid sphingomyelinase (ASM)/ceramide system plays an important role and is proposed as a molecular target for antidepressant action. Because alternative splicing of SMPD1 mRNA, coding for ASM, is relevant for the regulation of ASM enzymatic activity, we investigated the frequency of alternatively spliced ASM isoforms in peripheral blood cells of MDD patients versus healthy controls...
September 28, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27859039/potential-psychiatric-uses-for-mdma
#18
Berra B Yazar-Klosinski, Michael C Mithoefer
Phase 2 trials of 3,4-methylenedioxymethamphetamine (MDMA)-assisted psychotherapy have demonstrated initial safety and efficacy for treatment of PTSD, with potential for expansion to depression and anxiety disorders. In these trials, single doses of MDMA are administered in a model of medication-assisted psychotherapy, differing from trials involving daily drug administration without psychotherapy. This model presents an opportunity to utilize accelerated regulatory pathways, such as FDA Breakthrough Therapy Designation, to most effectively and expeditiously test such novel approaches...
November 9, 2016: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/27855737/genetic-basis-of-chronotype-in-humans-insights-from-three-landmark-gwas
#19
David A Kalmbach, Logan D Schneider, Joseph Cheung, Sarah J Bertrand, Thiruchelvam Kariharan, Allan I Pack, Philip R Gehrman
Chronotype, or diurnal preference, refers to behavioral manifestations of the endogenous circadian system that governs preferred timing of sleep and wake. As variations in circadian timing and system perturbations are linked to disease development, the fundamental biology of chronotype has received attention for its role in the regulation and dysregulation of sleep and related medical and psychiatric illnesses. Twin and family studies have shown that chronotype is a heritable trait, thus directing attention toward its genetic basis...
October 28, 2016: Sleep
https://www.readbyqxmd.com/read/27845416/psychiatric-and-neurological-disorders-are-associated-with-bullous-pemphigoid-a-nationwide-finnish-care-register-study
#20
Anna-Kaisa Försti, Jari Jokelainen, Hanna Ansakorpi, Allan Seppänen, Kari Majamaa, Markku Timonen, Kaisa Tasanen
Bullous pemphigoid (BP) is an autoimmune blistering skin disease with increasing incidence. BP is associated with neurological disorders, but it has not been established, what subtypes of dementia and stroke are associated with BP, and what is the temporal relation between these diseases. Also, the association between BP and psychiatric disorders is controversial. We conducted a retrospective nationwide study, using the Finnish Care Register for Health Care diagnoses between 1987 and 2013. The study population of 4524 BP patients were compared with 66138 patients with basocellular carcinoma (BCC), neurological and psychiatric comorbid disorders were evaluated for both groups, and associations were estimated by Cox regression and logistic regression analyses...
November 15, 2016: Scientific Reports
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