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https://www.readbyqxmd.com/read/28812263/molecular-basis-of-oxytocin-receptor-signalling-in-the-brain-what-we-know-and-what-we-need-to-know
#1
Marta Busnelli, Bice Chini
Oxytocin (OT), a hypothalamic neuropeptide involved in regulating the social behaviour of all vertebrates, has been proposed as a treatment for a number of neuropsychiatric disorders characterised by deficits in the social domain. Over the last few decades, advances focused on understanding the social effects of OT and its role in physiological conditions and brain diseases, but much less has been done to clarify the molecular cascade of events involved in mediating such effects and in particular the cellular and molecular pharmacology of OT and its target receptor (OTR) in neuronal and glial cells...
August 16, 2017: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/28802936/nonmotor-symptoms-in-experimental-models-of-parkinson-s-disease
#2
Nataliya Titova, Anthony H V Schapira, K Ray Chaudhuri, Mubasher A Qamar, Elena Katunina, Peter Jenner
Nonmotor symptoms of Parkinson's disease (PD) range from neuropsychiatric, cognitive to sleep and sensory disorders and can arise from the disease process as well as from drug treatment. The clinical heterogeneity of nonmotor symptoms of PD is underpinned by a wide range of neuropathological and molecular pathology, affecting almost the entire range of neurotransmitters present in brain and the periphery. Understanding the neurobiology and pathology of nonmotor symptoms is crucial to the effective treatment of PD and currently a key unmet need...
2017: International Review of Neurobiology
https://www.readbyqxmd.com/read/28799954/effects-of-systemic-glutamatergic-manipulations-on-conditioned-eyeblink-responses-and-hyperarousal-in-a-rabbit-model-of-post-traumatic-stress-disorder
#3
Lauren B Burhans, Carrie A Smith-Bell, Bernard G Schreurs
Glutamatergic dysfunction is implicated in many neuropsychiatric conditions, including post-traumatic stress disorder (PTSD). Glutamate antagonists have shown some utility in treating PTSD symptoms, whereas glutamate agonists may facilitate cognitive behavioral therapy outcomes. We have developed an animal model of PTSD, based on conditioning of the rabbit's eyeblink response, that addresses two key features: conditioned responses (CRs) to cues associated with an aversive event and a form of conditioned hyperarousal referred to as conditioning-specific reflex modification (CRM)...
August 9, 2017: Behavioural Pharmacology
https://www.readbyqxmd.com/read/28774351/cross-disorder-cognitive-impairments-in-youth-referred-for-neuropsychiatric-evaluation
#4
Alysa E Doyle, Pieter J Vuijk, Nathan D Doty, Lauren M McGrath, Brian L Willoughby, Ellen H O'Donnell, H Kent Wilson, Mary K Colvin, Deanna C Toner, Kelsey E Hudson, Jessica E Blais, Hillary L Ditmars, Stephen V Faraone, Larry J Seidman, Ellen B Braaten
OBJECTIVES: Studies suggest that impairments in some of the same domains of cognition occur in different neuropsychiatric conditions, including those known to share genetic liability. Yet, direct, multi-disorder cognitive comparisons are limited, and it remains unclear whether overlapping deficits are due to comorbidity. We aimed to extend the literature by examining cognition across different neuropsychiatric conditions and addressing comorbidity. METHODS: Subjects were 486 youth consecutively referred for neuropsychiatric evaluation and enrolled in the Longitudinal Study of Genetic Influences on Cognition...
August 4, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28750400/a-dopamine-hypothesis-of-autism-spectrum-disorder
#5
Denis Pavăl
Autism spectrum disorder (ASD) comprises a group of neurodevelopmental disorders characterized by social deficits and stereotyped behaviors. While several theories have emerged, the pathogenesis of ASD remains unknown. Although studies report dopamine signaling abnormalities in autistic patients, a coherent dopamine hypothesis which could link neurobiology to behavior in ASD is currently lacking. In this paper, we present such a hypothesis by proposing that autistic behavior arises from dysfunctions in the midbrain dopaminergic system...
July 28, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28727115/the-microbiota-gut-brain-axis-as-a-key-regulator-of-neural-function-and-the-stress-response-implications-for-human-and-animal-health
#6
N C Wiley, T G Dinan, R P Ross, C Stanton, G Clarke, J F Cryan
The brain-gut-microbiota axis comprises an extensive communication network between the brain, the gut, and the microbiota residing there. Development of a diverse gut microbiota is vital for multiple features of behavior and physiology, as well as many fundamental aspects of brain structure and function. Appropriate early-life assembly of the gut microbiota is also believed to play a role in subsequent emotional and cognitive development. If the composition, diversity, or assembly of the gut microbiota is impaired, this impairment can have a negative impact on host health and lead to disorders such as obesity, diabetes, inflammatory diseases, and even potentially neuropsychiatric illnesses, including anxiety and depression...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28708247/adolescents-with-type-1-diabetes-mellitus-and-attention-deficit-hyperactivity-disorder-require-specific-support-from-healthcare-professionals
#7
Ida Lindblad, Ann-Charlotte Engström, Charlotte Nylander, Elisabeth Fernell
AIM: Managing type 1 diabetes mellitus requires efficient cognitive and executive skills and adolescents who have attention-deficit/hyperactivity disorder (ADHD) may face specific challenges. This study explored young people's experiences of diabetes treatment and care. METHOD: In a population-based study, comprising 175 patients aged 5-16 years with type 1 diabetes mellitus in two Swedish counties, we found that eight also met criteria for ADHD. Six of these, aged 14...
July 14, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28700181/-hyperuricemia-and-gene-mutations-a-case-report
#8
Fabio Tattoli, Daniela Falconi, Ornella De Prisco, Gherzi Maurizio, Federico Marazzi, Marita Marengo, Ilaria Serra, Michela Tamagnone, Luca Cordero di Montezemolo, Barbara Pasini, Marco Formica
Hyperuricemia is frequently found in nephrology. The case presented may be useful to clarify some pathogenetic aspects. It is a patient of 18 years, hyperuricaemic. Non-consanguineous parents, hyperuricemia in the paternal line, not neuropsychiatric disorders in the family. Delay in neuromotor acquisitions, average intellectual disabilities, anxiety disorder, obsessive-compulsive personality traits. Normal renal function and renal ultrasound. Evidence of hyperuricemia in 2015. Never gouty episodes and / or lithiasis, initiated allopurinol 100 mg on alternate days, with no side effects, urea in the control range, slightly below normal uricuria...
June 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28695538/fgf9-y162c-mutation-alters-information-processing-and-social-memory-in-mice
#9
Lillian Garrett, Lore Becker, Jan Rozman, Oliver Puk, Tobias Stoeger, Ali Önder Yildirim, Alexander Bohla, Oliver Eickelberg, Wolfgang Hans, Cornelia Prehn, Jerzy Adamski, Thomas Klopstock, Ildikó Rácz, Andreas Zimmer, Martin Klingenspor, Helmut Fuchs, Valerie Gailus-Durner, Wolfgang Wurst, Martin Hrabě de Angelis, Jochen Graw, Sabine M Hölter
In neuropsychiatric diseases, such as major depression and anxiety, pathogenic vulnerability is partially dictated by a genetic predisposition. The search continues to define this genetic susceptibility and establish new genetic elements as potential therapeutic targets. The fibroblast growth factors (FGFs) could be interesting in this regard. This family of signaling molecules plays important roles in development while also functioning within the adult. This includes effects on aspects of brain function such as neurogenesis and synapse formation...
July 10, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28670272/behavioral-and-psychological-symptoms-impact-clinical-competence-in-alzheimer-s-disease
#10
Elodie Bertrand, Eelco van Duinkerken, J Landeira-Fernandez, Marcia C N Dourado, Raquel L Santos, Jerson Laks, Daniel C Mograbi
Decision-making is considered a fundamental aspect of personal autonomy and can be affected in psychiatric and neurologic diseases. It has been shown that cognitive deficits in dementia impact negatively on decision-making. Moreover, studies highlighted impaired clinical competence in neuropsychiatric disorders, such as schizophrenia and bipolar disorder. In this context, the current study explored the relationship between behavioral and psychological symptoms of dementia (BPSD) and clinical competence, especially the capacity to consent to treatment, in Alzheimer's disease (AD)...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28664299/role-of-disc1-in-neuronal-trafficking-and-its-implication-in-neuropsychiatric-manifestation-and-neurotherapeutics
#11
REVIEW
Toshifumi Tomoda, Takatoshi Hikida, Takeshi Sakurai
Disrupted-in-schizophrenia 1 (DISC1) was initially identified as a gene disrupted by a translocation mutation co-segregating with a variety of psychotic and mood disorders in a Scottish pedigree. In agreement with this original finding, mouse models that perturb Disc1 display deficits of behaviors in specific dimensions, such as cognition and emotion, but not a motor dimension. Although DISC1 is not a risk gene for sporadic cases of specific psychiatric disorders defined by categorical diagnostic criteria (e...
July 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28638598/caregiver-burden-is-increased-in-parkinson-s-disease-with-mild-cognitive-impairment-pd-mci
#12
Ann J Jones, Roeline G Kuijer, Leslie Livingston, Daniel Myall, Kyla Horne, Michael MacAskill, Toni Pitcher, Paul T Barrett, Tim J Anderson, John C Dalrymple-Alford
BACKGROUND: There is limited evidence on caregiver outcomes associated with mild cognitive impairment in patients with Parkinson's disease (PD-MCI) and the coping strategies used by these caregivers. METHODS: To investigate this relationship, we examined levels of burden, depression, anxiety, coping strategies and positive aspects of caregiving in the informal caregivers of 96 PD patients. The PD patients were classified using MDS-Task Force Level II criteria as showing either normal cognition (PD-N; n = 51), PD-MCI (n = 30) or with dementia (PDD; n = 15)...
2017: Translational Neurodegeneration
https://www.readbyqxmd.com/read/28609483/histone-posttranslational-modifications-predict-specific-alternative-exon-subtypes-in-mammalian-brain
#13
Qiwen Hu, Eun Ji Kim, Jian Feng, Gregory R Grant, Elizabeth A Heller
A compelling body of literature, based on next generation chromatin immunoprecipitation and RNA sequencing of reward brain regions indicates that the regulation of the epigenetic landscape likely underlies chronic drug abuse and addiction. It is now critical to develop highly innovative computational strategies to reveal the relevant regulatory transcriptional mechanisms that may underlie neuropsychiatric disease. We have analyzed chromatin regulation of alternative splicing, which is implicated in cocaine exposure in mice...
June 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28601141/neuropsychiatric-aspects-of-infectious-diseases-an-update
#14
REVIEW
Sahil Munjal, Stephen J Ferrando, Zachary Freyberg
Among the critically ill, infectious diseases can play a significant role in the etiology of neuropsychiatric disturbances. All critical care physicians are familiar with delirium as a secondary complication of systemic infection. This article focuses on key infectious diseases that commonly and directly produce neuropsychiatric symptoms, including direct infection of the central nervous system, human immunodeficiency virus infection, and AIDS.
July 2017: Critical Care Clinics
https://www.readbyqxmd.com/read/28596922/noradrenergic-modulation-of-cognition-in-health-and-disease
#15
REVIEW
Olga Borodovitsyna, Matthew Flamini, Daniel Chandler
Norepinephrine released by the locus coeruleus modulates cellular processes and synaptic transmission in the central nervous system through its actions at a number of pre- and postsynaptic receptors. This transmitter system facilitates sensory signal detection and promotes waking and arousal, processes which are necessary for navigating a complex and dynamic sensory environment. In addition to its effects on sensory processing and waking behavior, norepinephrine is now recognized as a contributor to various aspects of cognition, including attention, behavioral flexibility, working memory, and long-term mnemonic processes...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28593819/voluntary-exercise-improves-cognitive-deficits-in-female-dominant-negative-disc1-transgenic-mouse-model-of-neuropsychiatric-disorders
#16
Hadar Segal-Gavish, Ran Barzilay, Ofri Rimoni, Daniel Offen
OBJECTIVES: Physical exercise has gained increasing interest as a treatment modality that improves prognosis in psychiatric patients. The disrupted in schizophrenia 1 (DISC1) gene is a candidate gene for major mental illness. In this study, we aimed to determine whether voluntary wheel running can improve cognitive deficits of dominant-negative DISC1 transgenic mice (DN-DISC1). METHODS: DN-DISC1 and control mice (10-week-old male and female) were placed for 14 days in a cage with or without access to a running wheel...
June 8, 2017: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/28585453/cognitive-outcomes-following-anti-n-methyl-d-aspartate-receptor-encephalitis-a-systematic-review
#17
Gemma L McKeon, Gail A Robinson, Alexander E Ryan, Stefan Blum, David Gillis, Carsten Finke, James G Scott
INTRODUCTION: Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is an immune-mediated neurological disorder that (among other severe neuropsychiatric symptoms) affects cognition. This study aimed to summarize current knowledge regarding the rates, nature, and predictors of neuropsychological dysfunction in patients recovering from anti-NMDAR encephalitis. METHOD: A systematic review of studies describing neuropsychological outcomes following anti-NMDAR encephalitis was conducted...
June 6, 2017: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/28558375/the-determinants-of-quality-of-life-of-nursing-home-residents-with-young-onset-dementia-and-the-differences-between-dementia-subtypes
#18
Britt Appelhof, Christian Bakker, Jeannette C L Van Duinen-van den Ijssel, Sandra A Zwijsen, Martin Smalbrugge, Frans R J Verhey, Marjolein E de Vugt, Sytse U Zuidema, Raymond T C M Koopmans
AIMS: The aims of this study are to (1) explore the determinants of quality of life (QoL) in nursing home residents with young-onset dementia (YOD), (2) investigate whether there are differences between dementia subtypes (Alzheimer dementia, vascular/mixed dementia, frontotemporal dementia, other) regarding these determinants, and (3) compare QoL profiles of YOD nursing home residents across dementia subtypes. METHODS: This cross-sectional study included 207 nursing home residents...
2017: Dementia and Geriatric Cognitive Disorders
https://www.readbyqxmd.com/read/28553986/epigenetics-nutrition-and-mental-health-is-there-a-relationship
#19
Aaron J Stevens, Julia J Rucklidge, Martin A Kennedy
Many aspects of human development and disease are influenced by the interaction between genetic and environmental factors. Understanding how our genes respond to the environment is central to managing health and disease, and is one of the major contemporary challenges in human genetics. Various epigenetic processes affect chromosome structure and accessibility of deoxyribonucleic acid (DNA) to the enzymatic machinery that leads to expression of genes. One important epigenetic mechanism that appears to underlie the interaction between environmental factors, including diet, and our genome, is chemical modification of the DNA...
May 29, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28538981/association-of-streptococcal-throat-infection-with-mental-disorders-testing-key-aspects-of-the-pandas-hypothesis-in-a-nationwide-study
#20
Sonja Orlovska, Claus Høstrup Vestergaard, Bodil Hammer Bech, Merete Nordentoft, Mogens Vestergaard, Michael Eriksen Benros
Importance: Streptococcal infection has been linked with the development of obsessive-compulsive disorder (OCD) and tic disorders, a concept termed pediatric autoimmune neuropsychiatric disorders associated with streptococcal infection (PANDAS). However, previous studies of this association have been small, and the results have been conflicting. Objective: To investigate the risk of mental disorders, specifically OCD and tic disorders, after a streptococcal throat infection...
July 1, 2017: JAMA Psychiatry
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