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https://www.readbyqxmd.com/read/28924437/fundus-findings-in-wernicke-encephalopathy
#1
Tal Serlin, Elad Moisseiev
Wernicke encephalopathy (WE) is an acute neuropsychiatric syndrome resulting from thiamine (vitamin B1) deficiency, classically characterized by the triad of ophthalmoplegia, confusion, and ataxia. While commonly associated with chronic alcoholism, WE may also occur in the setting of poor nutrition or absorption. We present a 37-year-old woman who underwent laparoscopic sleeve gastrectomy and presented with visual disturbance with bilateral horizontal nystagmus, confusion, and postural imbalance. Fundus examination revealed bilateral optic disc edema with a retinal hemorrhage in the left eye...
May 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28924181/common-and-dissociable-regional-cerebral-blood-flow-differences-associate-with-dimensions-of-psychopathology-across-categorical-diagnoses
#2
A N Kaczkurkin, T M Moore, M E Calkins, R Ciric, J A Detre, M A Elliott, E B Foa, A Garcia de la Garza, D R Roalf, A Rosen, K Ruparel, R T Shinohara, C H Xia, D H Wolf, R E Gur, R C Gur, T D Satterthwaite
The high comorbidity among neuropsychiatric disorders suggests a possible common neurobiological phenotype. Resting-state regional cerebral blood flow (CBF) can be measured noninvasively with magnetic resonance imaging (MRI) and abnormalities in regional CBF are present in many neuropsychiatric disorders. Regional CBF may also provide a useful biological marker across different types of psychopathology. To investigate CBF changes common across psychiatric disorders, we capitalized upon a sample of 1042 youths (ages 11-23 years) who completed cross-sectional imaging as part of the Philadelphia Neurodevelopmental Cohort...
September 19, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28922421/effects-of-acute-administration-of-donepezil-or-memantine-on-sleep-deprivation-induced-spatial-memory-deficit-in-young-and-aged-non-human-primate-grey-mouse-lemurs-microcebus-murinus
#3
Anisur Rahman, Yves Lamberty, Esther Schenker, Massimo Cella, Solène Languille, Régis Bordet, Jill Richardson, Fabien Pifferi, Fabienne Aujard
The development of novel therapeutics to prevent cognitive decline of Alzheimer's disease (AD) is facing paramount difficulties since the translational efficacy of rodent models did not resulted in better clinical results. Currently approved treatments, including the acetylcholinesterase inhibitor donepezil (DON) and the N-methyl-D-aspartate antagonist memantine (MEM) provide marginal therapeutic benefits to AD patients. There is an urgent need to develop a predictive animal model that is phylogenetically proximal to humans to achieve better translation...
2017: PloS One
https://www.readbyqxmd.com/read/28921675/altered-cav1-2-function-in-the-timothy-syndrome-mouse-model-produces-ascending-serotonergic-abnormalities
#4
Daniel G Ehlinger, Kathryn G Commons
Polymorphism in the gene CACNA1C, encoding the pore-forming subunit of Cav1.2 L-type calcium channels, has one of the strongest genetic linkages to schizophrenia, bipolar disorder, and major depressive disorder: psychopathologies in which serotonin signaling has been implicated. Additionally, a gain-of-function mutation in CACNA1C is responsible for the neurodevelopmental disorder Timothy Syndrome that presents with prominent behavioral features on the autism spectrum. Given an emerging role for serotonin in the etiology of autism spectrum disorders, we investigate the relationship between Cav1...
September 16, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28919330/limbic-encephalitis-with-lgi1-antibodies-in-a-14-year-old-boy
#5
M Schimmel, M C Frühwald, C G Bien
Limbic encephalitis (LE) with antibodies against leucine-rich glioma inactivated protein 1 (LGI1) is an auto-antibody mediated disorder with characteristic symptoms as dysfunction of memory, faciobrachial dystonic seizures and neuropsychiatric symptoms as emotional lability. Limbic encephalitis with LGI1 antibodies has been known so far as a disease of adults. We describe the case of a 14-year-old boy presenting with typical dysfunction of memory and LGI1 antibodies. To the best of our knowledge, this is the youngest patient with LGI1 antibody mediated limbic encephalitis described so far...
September 2, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28916270/understanding-taurine-cns-activity-using-alternative-zebrafish-models
#6
REVIEW
Nathana J Mezzomo, Barbara D Fontana, Allan V Kalueff, Leonardo J G Barcellos, Denis B Rosemberg
Taurine is a highly abundant "amino acid" in the brain. Despite the potential neuroactive role of taurine in vertebrates has long been recognized, the underlying molecular mechanisms related to its pleiotropic effects in the brain remain poorly understood. Due to the genetic tractability, rich behavioral repertoire, neurochemical conservation, and small size, the zebrafish (Danio rerio) has emerged as a powerful candidate for neuropsychopharmacology investigation and in vivo drug screening. Here, we summarize the main physiological roles of taurine in mammals, including neuromodulation, osmoregulation, membrane stabilization, and antioxidant action...
September 12, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28914218/-apathetic-geriatric-patient-benefits-from-methylphenidate
#7
A Ter Keurst, J H A M Tuerlings, E A Bertholet, H W Wijnen
Two independent, home-dwelling geriatric patients presented with apathy at a general practice in the Netherlands and were seen by an elderly care physician after (non-)medical interventions had failed. Both patients were treated with low-dose methylphenidate. During treatment, apathy symptoms decreased and the patients became more active. Apathy is a frequent symptom of several neuropsychiatric diseases, depression and somatic conditions. Its incidence varies from 1.3% in healthy elderly people to more than 50% in the elderly with depression or dementia...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28914082/characterizing-psychiatric-comorbidity-in-children-with-autism-spectrum-disorder-receiving-publicly-funded-mental-health-services
#8
Lauren Brookman-Frazee, Nicole Stadnick, Colby Chlebowski, Mary Baker-Ericzén, William Ganger
Publicly funded mental health programs play a significant role in serving children with autism spectrum disorder. Understanding patterns of psychiatric comorbidity for this population within mental health settings is important to implement appropriately tailored interventions. This study (1) describes patterns of psychiatric comorbidity in children with autism spectrum disorder who present to mental health services with challenging behaviors and (2) identifies child characteristics associated with comorbid conditions...
September 1, 2017: Autism: the International Journal of Research and Practice
https://www.readbyqxmd.com/read/28912865/elevated-levels-of-soluble-fractalkine-and-increased-expression-of-cx3cr1-in-neuropsychiatric-systemic-lupus-erythematosus
#9
Ling Guo, Xiaoye Lu, Yuan Wang, Chunde Bao, Shunle Chen
The aim of the present study was to determine the levels of soluble fractalkine (sFKN) and expression of CX3CR1 in neuropsychiatric systemic lupus erythematosus (NPSLE). Disease activity of SLE was assessed using the SLE Disease Activity Index (SLEDAI). The mRNA expression levels of CX3CR1 and FKN were quantified using reverse transcription-quantitative polymerase chain reaction. Levels of sFKN in the serum and cerebrospinal fluid (CSF) were measured using enzyme-linked immunosorbent assays. The mRNA expression levels of CX3CR1 in peripheral blood mononuclear cells from patients with NPSLE, non-NPSLE and Behcet's disease were significantly higher than that of rheumatoid arthritis and healthy persons...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28911050/motor-abnormalities-from-neurodevelopmental-to-neurodegenerative-through-functional-neuro-psychiatric-disorders
#10
Victor Peralta, Manuel J Cuesta
Background: Motor abnormalities (MAs) of severe mental disorders have been traditionally neglected both in clinical practice and research, although they are an increasing focus of attention because of their clinical and neurobiological relevance. For historical reasons, most of the literature on MAs has been focused to a great extent on schizophrenia, and as a consequence their prevalence and featural properties in other psychiatric or neuropsychiatric disorders are poorly known. In this article, we evaluated the extent to which catatonic, extrapyramidal and neurological soft signs, and their associated clinical features, are present transdiagnostically...
September 1, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28904568/pediatric-autoimmune-encephalitis
#11
REVIEW
Massimo Barbagallo, Giovanna Vitaliti, Piero Pavone, Catia Romano, Riccardo Lubrano, Raffaele Falsaperla
Autoimmune (antibody mediated) encephalitis (AE) is emerging as a more common cause of pediatric encephalopathy than previously thought. The autoimmune process may be triggered by an infection, vaccine, or occult neoplasm. In the latter case, onconeural autoantibodies are directed against intracellular neuronal antigens, but a recent heterogeneous group of encephalitic syndromes has been found not to have underlying tumor but is associated with autoantibodies to the neuronal surface or synaptic antigens. Neuropsychiatric symptoms are very common in autoimmune encephalopathy; as a result, affected children may be initially present to psychiatrists...
April 2017: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28900286/adolescent-thc-exposure-causes-enduring-prefrontal-cortical-disruption-of-gabaergic-inhibition-and-dysregulation-of-sub-cortical-dopamine-function
#12
Justine Renard, Hanna J Szkudlarek, Cecilia P Kramar, Christina E L Jobson, Kyra Moura, Walter J Rushlow, Steven R Laviolette
Chronic adolescent marijuana use has been linked to the later development of psychiatric diseases such as schizophrenia. GABAergic hypofunction in the prefrontal cortex (PFC) is a cardinal pathological feature of schizophrenia and may be a mechanism by which the PFC loses its ability to regulate sub-cortical dopamine (DA) resulting in schizophrenia-like neuropsychopathology. In the present study, we exposed adolescent rats to Δ-9-tetra-hydrocannabinol (THC), the psychoactive component in marijuana. At adulthood, we characterized the functionality of PFC GABAergic neurotransmission and its regulation of sub-cortical DA function using molecular, behavioral and in-vivo electrophysiological analyses...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28899620/the-action-radius-of-oxytocin-release-in-the-mammalian-cns-from-single-vesicles-to-behavior
#13
REVIEW
Bice Chini, Matthijs Verhage, Valery Grinevich
The hypothalamic neuropeptide oxytocin (OT) has attracted the attention both of the scientific community and a general audience because of its prosocial effects in mammals, and OT is now seen as a facilitator of mammalian species propagation. Furthermore, OT is a candidate for the treatment of social deficits in several neuropsychiatric and neurodevelopmental conditions. Despite such possibilities and a long history of studies on OT behavioral effects, the mechanisms of OT actions in the brain remain poorly understood...
September 9, 2017: Trends in Pharmacological Sciences
https://www.readbyqxmd.com/read/28894614/pancreatic-adenocarcinoma-producing-parathyroid-hormone-related-protein
#14
Reiko Yamada, Kyosuke Tanaka, Hiroyuki Inoue, Takashi Sakuno, Tetsuro Harada, Naohiko Yoshizawa, Hiroshi Miura, Toshihumi Takeuchi, Misaki Nakamura, Masaki Katsurahara, Yasuhiko Hamada, Noriyuki Horiki, Yoshiyuki Takei
A 48-year-old woman presented to our hospital with a 1-year history of a continuous high fever. She was diagnosed with metastatic pancreatic adenocarcinoma accompanied by leukocytosis without infection. Her serum concentration of granulocyte colony-stimulating factor was highly elevated. Forty-five days after initiating chemotherapy, she was readmitted because of a neuropsychiatric disturbance and hypercalcemia. Her serum concentration of parathyroid hormone-related protein (PTH-rP) was elevated. A pretreatment biopsy specimen showed strong cytoplasmic immunoreactivity to anti-PTH-rP antibody, suggesting that overproduction of PTH-rP accounted for the hypercalcemia...
2017: Case Reports in Oncological Medicine
https://www.readbyqxmd.com/read/28894175/sexual-congruency-in-the-connectome-and-translatome-of-vta-dopamine-neurons
#15
Amanda S Chung, Samara M Miller, Yanjun Sun, Xiangmin Xu, Larry S Zweifel
The ventral tegmental area (VTA) dopamine system is important for reward, motivation, emotion, learning, and memory. Dysfunctions in the dopamine system are linked to multiple neurological and neuropsychiatric disorders, many of which present with sex differences. Little is known about the extent of heterogeneity in the basic organization of VTA dopamine neurons with regard to sex. Here, we characterized the cell-specific connectivity of VTA dopamine neurons, their mRNA translational profile, and basic electrophysiological characteristics in a common strain of mice...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28890165/reduction-of-the-anticholinergic-burden-makes-it-possible-to-decrease-behavioral-and-psychological-symptoms-of-dementia
#16
Yacine Jaïdi, Vignon Nonnonhou, Lukshe Kanagaratnam, Laurie Anne Bertholon, Sarah Badr, Vivien Noël, Jean-Luc Novella, Rachid Mahmoudi
OBJECTIVE: The aim of this study was to evaluate the impact of a reduction of the anticholinergic burden (AB) on the frequency and severity of behavioral and psychological symptoms of dementia (BPSD) and their repercussions on the care team (occupational disruptiveness). METHODS: In this prospective, single-center study in an acute care unit for Alzheimer disease (AD) and related disorders, 125 elderly subjects (mean age: 84.4 years) with dementia presented with BPSD...
August 14, 2017: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28887403/the-functions-of-reelin-in-membrane-trafficking-and-cytoskeletal-dynamics-implications-for-neuronal-migration-polarization-and-differentiation
#17
REVIEW
Jessica Santana, María-Paz Marzolo
Reelin is a large extracellular matrix protein with relevant roles in mammalian central nervous system including neurogenesis, neuronal polarization and migration during development; and synaptic plasticity with its implications in learning and memory, in the adult. Dysfunctions in reelin signaling are associated with brain lamination defects such as lissencephaly, but also with neuropsychiatric diseases like autism, schizophrenia and depression as well with neurodegeneration. Reelin signaling involves a core pathway that activates upon reelin binding to its receptors, particularly ApoER2 (apolipoprotein E receptor 2)/LRP8 (low-density lipoprotein receptor-related protein 8) and very low-density lipoprotein receptor, followed by Src/Fyn-mediated phosphorylation of the adaptor protein Dab1 (Disabled-1)...
September 7, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28884607/assessing-the-relationship-between-disordered-gamblers-with-psychosis-and-increased-gambling-severity-the-mediating-role-of-impulsivity
#18
Hyoun S Kim, Briana D Cassetta, David C Hodgins, Lianne M Tomfohr-Madsen, Daniel S McGrath, Hermano Tavares
OBJECTIVE: Recent research suggests that disordered gambling and psychosis co-occur at higher rates than expected in the general population. Gamblers with psychosis also report greater psychological distress and increased gambling severity. However, the mechanism by which psychosis leads to greater gambling symptomology remains unknown. The objective of the present research was to test whether impulsivity mediated the relationship between comorbid psychosis and gambling severity. METHOD: The sample consisted of 394 disordered gamblers voluntarily seeking treatment at a large university hospital in São Paulo, Brazil...
January 1, 2017: Canadian Journal of Psychiatry. Revue Canadienne de Psychiatrie
https://www.readbyqxmd.com/read/28879833/prevalence-of-mild-behavioral-impairment-in-mild-cognitive-impairment-and-subjective-cognitive-decline-and-its-association-with-caregiver-burden
#19
Faisal Sheikh, Zahinoor Ismail, Moyra E Mortby, Philip Barber, Alicja Cieslak, Karyn Fischer, Robert Granger, David B Hogan, Aaron Mackie, Colleen J Maxwell, Bijoy Menon, Patricia Mueller, David Patry, Dawn Pearson, Jeremy Quickfall, Tolulope Sajobi, Eric Tse, Meng Wang, Eric E Smith
BACKGROUND: Mild behavioral impairment (MBI) describes later life acquired, sustained neuropsychiatric symptoms (NPS) in cognitively normal individuals or those with mild cognitive impairment (MCI), as an at-risk state for incident cognitive decline and dementia. We developed an operational definition of MBI and tested whether the presence of MBI was related to caregiver burden in patients with subjective cognitive decline (SCD) or MCI assessed at a memory clinic. METHODS: MBI was assessed in 282 consecutive memory clinic patients with SCD (n = 119) or MCI (n = 163) in accordance with the International Society to Advance Alzheimer's Research and Treatment - Alzheimer's Association (ISTAART-AA) research diagnostic criteria...
September 7, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28879200/the-nuclear-proteome-of-white-and-gray-matter-from-schizophrenia-postmortem-brains
#20
Verônica M Saia-Cereda, Aline G Santana, Andrea Schmitt, Peter Falkai, Daniel Martins-de-Souza
Schizophrenia (SCZ) is a serious neuropsychiatric disorder that manifests through several symptoms from early adulthood. Numerous studies over the last decades have led to significant advances in increasing our understanding of the factors involved in SCZ. For example, mass spectrometry-based proteomic analysis has provided important insights by uncovering protein dysfunctions inherent to SCZ. Here, we present a comprehensive analysis of the nuclear proteome of postmortem brain tissues from corpus callosum (CC) and anterior temporal lobe (ATL)...
July 2017: Molecular Neuropsychiatry
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