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https://www.readbyqxmd.com/read/28109579/reprint-of-neuropsychiatric-symptoms-behavioural-disorders-and-quality-of-life-in-parkinson-s-disease
#1
REVIEW
Roberta Balestrino, Pablo Martinez-Martin
Parkinson's disease is a complex neurodegenerative disorder characterized by motor and non-motor symptoms, with neuropsychiatric manifestations among the most frequent non-motor symptoms. Health-related quality of life is a patient-reported outcome that reflects the impact of the disease on physical, mental, and social wellbeing, and on other aspects of patient' life. Although older studies on health-related quality of life in Parkinson's disease mainly investigated the role of the motor impairment, recent research focused on non-motor symptoms has highlighted the critical role that behavioural disturbances due to neuropsychiatric symptoms play in determining health related quality of life...
January 12, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28087735/relationships-linking-emotional-motor-cognitive-and-gabaergic-dysfunctions-in-dystrophin-deficient-mdx-mice
#2
Cyrille Vaillend, Rémi Chaussenot
Alterations in the Duchenne muscular dystrophy (DMD) gene have been associated with enhanced stress reactivity in vertebrate species, suggesting a role for brain dystrophin in fear-related behavioral and cognitive processes. Because the loss of dystrophin (Dp427) reduces clustering of central GABAA receptors, it is suspected that local inhibitory tuning and modulation of neuronal excitability are perturbed in a distributed brain circuit that normally controls such critical behavioral functions. In this study we undertook a large-scale behavioral study to evaluate fear-related behavioral disturbances in dystrophin-deficient mdx mice...
January 13, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28060309/symmetric-bihemispheric-postmortem-brain-cutting-to-study-healthy-and-pathological-brain-conditions-in-humans
#3
Diego Iacono, Maria Geraci-Erck, Hui Peng, John Paul Bouffard
Neuropathologists, at times, feel intimidated by the amount of knowledge needed to generate definitive diagnoses for complex neuropsychiatric phenomena described in those patients for whom a brain autopsy has been requested. Although the advancements of biomedical sciences and neuroimaging have revolutionized the neuropsychiatric field, they have also generated the misleading idea that brain autopsies have only a confirmatory value. This false idea created a drastic reduction of autopsy rates and, consequently, a reduced possibility to perform more detailed and extensive neuropathological investigations, which are necessary to comprehend numerous normal and pathological aspects yet unknown of the human brain...
December 18, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28017739/mrs-studies-of-neuroenergetics-and-glutamate-glutamine-exchange-in-rats-extensions-to-hyperammonemic-models
#4
Bernard Lanz, Veronika Rackayova, Olivier Braissant, Cristina Cudalbu
In vivo Magnetic Resonance Spectroscopy is a useful tool to characterize brain biochemistry as well as its alteration in a large number of major central nervous system diseases. The present review will focus on the study of the glutamate-glutamine cycle, an important biochemical pathway in excitatory neurotransmission, analyzed using in vivo MRS of different accessible nuclei: (1)H, (13)C, (15)N and (31)P. The different methodological aspects of data acquisition, processing and absolute quantification of the MRS data for each nucleus will be presented, as well as the description of the mathematic modeling approach to interpret the MRS measurements in terms of biochemical kinetics...
December 22, 2016: Analytical Biochemistry
https://www.readbyqxmd.com/read/28001431/the-relationship-between-family-functioning-and-caregiving-appraisal-of-dementia-family-caregivers-caregiving-self-efficacy-as-a-mediator
#5
Hsin-Yi Liu, Lian-Hua Huang
OBJECTIVES: The aim of this study was to explore caregiving self-efficacy as a mediator for the association between family functioning and caregiving appraisal of dementia family caregivers in Taiwan. METHOD: This study adopted a cross-sectional correlational design. Purposive sampling was used to recruit 115 dyads of dementia patients and family caregivers from the outpatient neurological clinics of two hospitals in northern Taiwan. Data were gathered through interviews with a structured questionnaire, which included demographic characteristics for caregivers and patients, family functioning, caregiving self-efficacy, as well as positive and negative aspects of caregiving appraisal...
December 21, 2016: Aging & Mental Health
https://www.readbyqxmd.com/read/27983697/%C3%AE-tocopherol-and-hippocampal-neural-plasticity-in-physiological-and-pathological-conditions
#6
REVIEW
Patrizia Ambrogini, Michele Betti, Claudia Galati, Michael Di Palma, Davide Lattanzi, David Savelli, Francesco Galli, Riccardo Cuppini, Andrea Minelli
Neuroplasticity is an "umbrella term" referring to the complex, multifaceted physiological processes that mediate the ongoing structural and functional modifications occurring, at various time- and size-scales, in the ever-changing immature and adult brain, and that represent the basis for fundamental neurocognitive behavioral functions; in addition, maladaptive neuroplasticity plays a role in the pathophysiology of neuropsychiatric dysfunctions. Experiential cues and several endogenous and exogenous factors can regulate neuroplasticity; among these, vitamin E, and in particular α-tocopherol (α-T), the isoform with highest bioactivity, exerts potent effects on many plasticity-related events in both the physiological and pathological brain...
December 15, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27943569/apoe-gene-and-neuropsychiatric-disorders-and-endophenotypes-a-comprehensive-review
#7
REVIEW
Diego A Forero, Sandra López-León, Yeimy González-Giraldo, Daniel R Dries, Angela J Pereira-Morales, Karen M Jiménez, Juan E Franco-Restrepo
The Apolipoprotein E (APOE) gene is one of the main candidates in neuropsychiatric genetics, with hundreds of studies carried out in order to explore the possible role of polymorphisms in the APOE gene in a large number of neurological diseases, psychiatric disorders, and related endophenotypes. In the current article, we provide a comprehensive review of the structural and functional aspects of the APOE gene and its relationship with brain disorders. Evidence from genome-wide association studies and meta-analyses shows that the APOE gene has been significantly associated with several neurodegenerative disorders...
December 12, 2016: American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics
https://www.readbyqxmd.com/read/27936175/effects-of-neonatal-dexamethasone-exposure-on-adult-neuropsychiatric-traits-in-rats
#8
Nathanael J Yates, Donald Robertson, Jennifer Rodger, Mathew T Martin-Iverson
The effects of early life stress in utero or in neonates has long-term consequences on hypothalamic-pituitary-adrenal (HPA) stress axis function and neurodevelopment. These effects extend into adulthood and may underpin a variety of mental illnesses and be related to various developmental and cognitive changes. We examined the potential role of neonatal HPA axis activation on adult psychopathology and dopamine sensitivity in the mature rat using neonatal exposure to the synthetic glucocorticoid receptor agonist and stress hormone, dexamethasone...
2016: PloS One
https://www.readbyqxmd.com/read/27932026/gene-environment-interactions-in-cortical-interneuron-development-and-dysfunction-a-review-of-preclinical-studies
#9
REVIEW
Lydia J Ansen-Wilson, Robert J Lipinski
Cortical interneurons (cINs) are a diverse group of locally projecting neurons essential to the organization and regulation of neural networks. Though they comprise only ∼20% of neurons in the neocortex, their dynamic modulation of cortical activity is requisite for normal cognition and underlies multiple aspects of learning and memory. While displaying significant morphological, molecular, and electrophysiological variability, cINs collectively function to maintain the excitatory-inhibitory balance in the cortex by dampening hyperexcitability and synchronizing activity of projection neurons, primarily through use of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA)...
December 5, 2016: Neurotoxicology
https://www.readbyqxmd.com/read/27905952/mental-health-and-urban-living-in-sub-saharan-africa-major-depressive-episodes-among-the-urban-poor-in-ouagadougou-burkina-faso
#10
Géraldine Duthé, Clémentine Rossier, Doris Bonnet, Abdramane Bassiahi Soura, Jamaica Corker
BACKGROUND: In sub-Saharan African cities, the epidemiological transition has shifted a greater proportion of the burden of non-communicable diseases, including mental and behavioral disorder, to the adult population. The burden of major depressive disorder and its social risk factors in the urban sub-Saharan African population are not well understood and estimates vary widely. We conducted a study in Ouagadougou, Burkina Faso, in order to estimate the prevalence of major depressive episodes among adults in this urban setting...
May 5, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27889010/neuropsychiatric-aspects-of-concussion
#11
REVIEW
Rajiv Radhakrishnan, Amir Garakani, Lawrence S Gross, Marcia K Goin, Janet Pine, Andrew E Slaby, Calvin R Sumner, David A Baron
Over the past decade, concussion has become the most widely discussed injury in contact sports. However, concussions also occur in several other settings, such as non-contact sports, elderly individuals, young children, military personnel, and victims of domestic violence. Concussion is frequently undiagnosed as a cause of psychiatric morbidity, especially when the patient has no history of loss of consciousness or direct head trauma. Almost all of the extant literature focuses on traumatic brain injury and assumes that concussion is merely a mild form of traumatic brain injury, which has resulted in a lack of understanding about what concussion is, and how to diagnose, monitor, and treat its varied neuropsychiatric symptoms...
December 2016: Lancet 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/27837170/differential-contributions-of-vasopressin-v1a-and-oxytocin-receptors-in-the-amygdala-to-pain-related-behaviors-in-rats
#13
Bryce Cragg, Guangchen Ji, Volker Neugebauer
Neuroplastic changes in the amygdala account for emotional-affective aspects of pain and involve neuropeptides such as calcitonin gene-related peptide and corticotropin-releasing factor. Another neuropeptide system, central arginine vasopressin, has been implicated in neuropsychiatric disorders, but its role in pain-related emotional expression and neuroplasticity remains to be determined. Here, we tested the hypothesis that arginine vasopressin in the amygdala contributes to pain-related emotional-affective responses, using stereotaxic applications of arginine vasopressin and antagonists for G-protein coupled vasopressin V1A and oxytocin receptors in adult male Sprague-Dawley rats...
2016: Molecular Pain
https://www.readbyqxmd.com/read/27833539/validity-of-quinpirole-sensitization-rat-model-of-ocd-linking-evidence-from-animal-and-clinical-studies
#14
REVIEW
Ales Stuchlik, Dominika Radostová, Hana Hatalova, Karel Vales, Tereza Nekovarova, Jana Koprivova, Jan Svoboda, Jiri Horacek
Obsessive-compulsive disorder (OCD) is a neuropsychiatric disorder with 1-3% prevalence. OCD is characterized by recurrent thoughts (obsessions) and repetitive behaviors (compulsions). The pathophysiology of OCD remains unclear, stressing the importance of pre-clinical studies. The aim of this article is to critically review a proposed animal model of OCD that is characterized by the induction of compulsive checking and behavioral sensitization to the D2/D3 dopamine agonist quinpirole. Changes in this model have been reported at the level of brain structures, neurotransmitter systems and other neurophysiological aspects...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27787875/posterior-fossa-syndrome-review-of-the-behavioral-and-emotional-aspects-in-pediatric-cancer-patients
#15
REVIEW
Jane C Lanier, Annah N Abrams
Medulloblastoma, the most common malignant brain tumor of childhood, occurs in the posterior fossa, the part of the intracranial cavity that contains the brainstem and the cerebellum. The cerebellum is involved in many complex aspects of human behavior and function, and when it is disrupted or insulted, this can lead to significant sequelae in children with posterior fossa tumors. A constellation of impairing and distressing symptoms, including mutism, ataxia/hypotonia, and emotional lability, develops in approximately 25% of children after the surgical resection of posterior fossa tumors...
October 27, 2016: Cancer
https://www.readbyqxmd.com/read/27783238/putting-the-pieces-together-in-gilles-de-la-tourette-syndrome-exploring-the-link-between-clinical-observations-and-the-biological-basis-of-dysfunction
#16
REVIEW
Rowshanak Hashemiyoon, Jens Kuhn, Veerle Visser-Vandewalle
Gilles de la Tourette syndrome is a complex, idiopathic neuropsychiatric disorder whose pathophysiological mechanisms have yet to be elucidated. It is phenotypically heterogeneous and manifests more often than not with both motor and behavioral impairment, although tics are its clinical hallmark. Tics themselves present with a complex profile as they characteristically wax and wane and are often preceded by premonitory somatosensory sensations to which it is said a tic is the response. Highly comorbid with obsessive-compulsive disorder and attention deficit-hyperactivity disorder, it is purported to be an epigenetic, neurodevelopmental spectrum disorder with a complex genetic profile...
January 2017: Brain Topography
https://www.readbyqxmd.com/read/27773782/obesity-current-and-potential-pharmacotherapeutics-and-targets
#17
REVIEW
Vidya Narayanaswami, Linda P Dwoskin
Obesity is a global epidemic that contributes to a number of health complications including cardiovascular disease, type 2 diabetes, cancer and neuropsychiatric disorders. Pharmacotherapeutic strategies to treat obesity are urgently needed. Research over the past two decades has increased substantially our knowledge of central and peripheral mechanisms underlying homeostatic energy balance. Homeostatic mechanisms involve multiple components including neuronal circuits, some originating in hypothalamus and brain stem, as well as peripherally-derived satiety, hunger and adiposity signals that modulate neural activity and regulate eating behavior...
October 20, 2016: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27736679/prevalence-of-driving-under-the-influence-of-psychoactive-substances-and-road-traffic-crashes-among-brazilian-crack-using-drivers
#18
Juliana Nichterwitz Scherer, Roberta Silvestrin, Felipe Ornell, Vinícius Roglio, Tanara Rosangela Vieira Sousa
BACKGROUND: Substance use disorders are associated with the increased risk of driving under the influence (DUI), but little is known about crack-cocaine and its relationship with road traffic crashes (RTC). METHOD: A multicenter sample of 765 crack-cocaine users was recruited in six Brazilian capitals in order to estimate the prevalence of DUI and RTC involvement. Legal, psychiatric, and drug-use aspects related with traffic safety were evaluated using the Addiction Severity Index - 6th version (ASI-6) and the Mini International Neuropsychiatric Interview...
October 1, 2016: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/27719860/psychologic-functional-forms-of-memory-disorder
#19
J Griem, J Stone, A Carson, M D Kopelman
In this chapter, we discuss the wide variety of patients who may attend a memory clinic or other health services presenting with memory symptoms but who do not have dementia. These diagnoses may include a wide range of neurologic and neuropsychiatric disorders; in this chapter we will focus on other causes of memory symptoms which may be labeled psychologic or functional, or be more obviously part of an established psychiatric disorder. We describe the differential categorization recently posited by Stone et al...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/27718271/neuropsychiatric-aspects-of-22q11-2-deletion-syndrome-considerations-in-the-prenatal-setting
#20
Anne S Bassett, Gregory Costain, Christian R Marshall
Most major neuropsychiatric outcomes of concern to families are not detectable by prenatal ultrasound. The introduction of genome-wide chromosomal microarray analysis to prenatal clinical diagnostic testing has increased the detection of pathogenic 22q11.2 deletions, which cause the most common genomic disorder. The recent addition of this and other microdeletions to non-invasive prenatal screening methods using cell-free fetal DNA has further propelled interest in outcomes. Conditions associated with 22q11...
January 2017: Prenatal Diagnosis
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