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https://www.readbyqxmd.com/read/28329674/%C3%AE-arrestin2-couples-metabotropic-glutamate-receptor-5-to-neuronal-protein-synthesis-and-is-a-potential-target-to-treat-fragile-x
#1
Laura J Stoppel, Benjamin D Auerbach, Rebecca K Senter, Anthony R Preza, Robert J Lefkowitz, Mark F Bear
Synaptic protein synthesis is essential for modification of the brain by experience and is aberrant in several genetically defined disorders, notably fragile X (FX), a heritable cause of autism and intellectual disability. Neural activity directs local protein synthesis via activation of metabotropic glutamate receptor 5 (mGlu5), yet how mGlu5 couples to the intracellular signaling pathways that regulate mRNA translation is poorly understood. Here, we provide evidence that β-arrestin2 mediates mGlu5-stimulated protein synthesis in the hippocampus and show that genetic reduction of β-arrestin2 corrects aberrant synaptic plasticity and cognition in the Fmr1(-/y) mouse model of FX...
March 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/28322275/oxidative-stress-driven-parvalbumin-interneuron-impairment-as-a-common-mechanism-in-models-of-schizophrenia
#2
P Steullet, J-H Cabungcal, J Coyle, M Didriksen, K Gill, A A Grace, T K Hensch, A-S LaMantia, L Lindemann, T M Maynard, U Meyer, H Morishita, P O'Donnell, M Puhl, M Cuenod, K Q Do
Parvalbumin inhibitory interneurons (PVIs) are crucial for maintaining proper excitatory/inhibitory balance and high-frequency neuronal synchronization. Their activity supports critical developmental trajectories, sensory and cognitive processing, and social behavior. Despite heterogeneity in the etiology across schizophrenia and autism spectrum disorder, PVI circuits are altered in these psychiatric disorders. Identifying mechanism(s) underlying PVI deficits is essential to establish treatments targeting in particular cognition...
March 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28317224/pharmacotherapy-for-the-treatment-of-aggression-in-pediatric-and-adolescent-patients-with-autism-spectrum-disorder-comorbid-attention-deficit-hyperactivity-disorder-a-questionnaire-survey-of-571-psychiatrists
#3
Kazuhiko Yamamuro, Noa Tsujii, Toyosaku Ota, Toshifumi Kishimoto, Junzo Iida
AIMS: Both attention-deficit/hyperactivity disorder (ADHD) and autism spectrum disorder (ASD) are frequently accompanied by serious aggression that requires psychiatric treatment. However, little is known about the experiences psychiatrists have had using pharmacotherapy to treat aggression in patients who have both ASD and ADHD (ASD/ADHD). The purpose of this study was to examine the experiences of Japanese child and adolescent psychiatrists in prescribing medication for aggression in patients with ASD/ADHD...
March 20, 2017: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/28316773/vitamin-d-treatment-during-pregnancy-prevents-autism-related-phenotypes-in-a-mouse-model-of-maternal-immune-activation
#4
Stephanie Vuillermot, Wei Luan, Urs Meyer, Darryl Eyles
BACKGROUND: Prenatal exposure to infection is a recognized environmental risk factor for neuropsychiatric disorders of developmental origins such as autism or schizophrenia. Experimental work in animals indicates that this link is mediated by maternal immune activation (MIA) involving interactions between cytokine-associated inflammatory events, oxidative stress, and other pathophysiological processes such as hypoferremia and zinc deficiency. Maternal administration of the viral mimic polyriboinosinic-polyribocytidylic acid (poly(I:C)) in mice produces several behavioral phenotypes in adult offspring of relevance to autism spectrum disorder (ASD) and other neurodevelopmental disorders...
2017: Molecular Autism
https://www.readbyqxmd.com/read/28316753/a-resting-eeg-study-of-neocortical-hyperexcitability-and-altered-functional-connectivity-in-fragile-x-syndrome
#5
Jun Wang, Lauren E Ethridge, Matthew W Mosconi, Stormi P White, Devin K Binder, Ernest V Pedapati, Craig A Erickson, Matthew J Byerly, John A Sweeney
BACKGROUND: Cortical hyperexcitability due to abnormal fast-spiking inhibitory interneuron function has been documented in fmr1 KO mice, a mouse model of the fragile X syndrome which is the most common single gene cause of autism and intellectual disability. METHODS: We collected resting state dense-array electroencephalography data from 21 fragile X syndrome (FXS) patients and 21 age-matched healthy participants. RESULTS: FXS patients exhibited greater gamma frequency band power, which was correlated with social and sensory processing difficulties...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28314733/genetics-implicate-common-mechanisms-in-autism-and-schizophrenia-synaptic-activity-and-immunity
#6
REVIEW
Xiaoming Liu, Zhengwei Li, Conghai Fan, Dongli Zhang, Jiao Chen
The diagnosis of debilitating psychiatric disorders like autism spectrum disorder (ASD) and schizophrenia (SCHZ) is on the rise. These are severe conditions that lead to social isolation and require lifelong professional care. Improved diagnosis of ASD and SCHZ provides early access to medication and therapy, but the reality is that the mechanisms and the cellular pathology underlying these conditions are mostly unknown at this time. Although both ASD and SCHZ have strong inherited components, genetic risk seems to be distributed in hundreds of variants, each conferring low risk...
March 17, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28304093/interview-informed-functional-analyses-a-comparison-of-synthesized-and-isolated-components
#7
Jessica D Slaton, Gregory P Hanley, Katherine J Raftery
Hanley, Jin, Vanselow, and Hanratty (2014) described a functional analysis (FA) format that relied on a synthesis of multiple contingencies described by caregivers during open-ended interviews. These interview-informed synthesized contingency analyses (IISCA) provided effective baselines from which to develop socially validated treatments, but the synthesis precluded a precise understanding of individual contingencies influencing problem behavior. We conducted IISCAs and standard FAs (Iwata, Dorsey, Slifer, Bauman, & Richman, 1982/1994) for nine children with autism to evaluate the likelihood of differentiation given a number of synthesized versus isolated variables...
March 17, 2017: Journal of Applied Behavior Analysis
https://www.readbyqxmd.com/read/28292384/association-of-learning-and-memory-calcineurin-binding-protein-with-autism-spectrum-disorders
#8
(no author information available yet)
OBJECTIVE: To determine the association of learning and memory calcineurin binding (CABIN1) protein with autism spectrum disorders. STUDY DESIGN: Cross-sectional comparative study. PLACE AND DURATION OF STUDY: The Autism Research and Treatment Center, King Khalid University Hospital, Riyadh, Saudi Arabia, from October 2013 to May 2014. METHODOLOGY: Serum levels of CABIN1 protein in 62 (64%) autistic male children were analysed and 35 (36%) age healthy children measured by using ELISA...
February 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28291301/-acute-dystonia-due-to-aripiprazole-use-in-two-children-with-autism-spectrum-disorder-in-the-first-five-years-of-life
#9
Mustafa Küçükköse, Bürge Kabukçu Başay
Autism spectrum disorders (ASD) are neuropsychiatric disorders characterized by impairment in social interactions, in verbal and non-verbal communication, and restricted and stereotyped patterns of interest and behavior within the first 3 years of life. Pharmacologic interventions may be needed for the treatment of temper tantrums, aggression, hyperactivity, and stereotypes in children with ASD. The approval of aripiprazole by the United States Food and Drug Administration (USFDA) for the treatment of temper tantrums in children and adolescents with ASD has gained increased interest for the use in these patients...
2017: Türk Psikiyatri Dergisi, Turkish Journal of Psychiatry
https://www.readbyqxmd.com/read/28291262/effects-of-bumetanide-on-neurobehavioral-function-in-children-and-adolescents-with-autism-spectrum-disorders
#10
E Lemonnier, N Villeneuve, S Sonie, S Serret, A Rosier, M Roue, P Brosset, M Viellard, D Bernoux, S Rondeau, S Thummler, D Ravel, Y Ben-Ari
In animal models of autism spectrum disorder (ASD), the NKCC1 chloride-importer inhibitor bumetanide restores physiological (Cl(-))i levels, enhances GABAergic inhibition and attenuates electrical and behavioral symptoms of ASD. In an earlier phase 2 trial; bumetanide reduced the severity of ASD in children and adolescents (3-11 years old). Here we report the results of a multicenter phase 2B study primarily to assess dose/response and safety effects of bumetanide. Efficacy outcome measures included the Childhood Autism Rating Scale (CARS), the Social Responsive Scale (SRS) and the Clinical Global Impressions (CGI) Improvement scale (CGI-I)...
March 14, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28287497/role-of-genetics-in-the-etiology-of-autistic-spectrum-disorder-towards-a-hierarchical-diagnostic-strategy
#11
REVIEW
Cyrille Robert, Laurent Pasquier, David Cohen, Mélanie Fradin, Roberto Canitano, Léna Damaj, Sylvie Odent, Sylvie Tordjman
Progress in epidemiological, molecular and clinical genetics with the development of new techniques has improved knowledge on genetic syndromes associated with autism spectrum disorder (ASD). The objective of this article is to show the diversity of genetic disorders associated with ASD (based on an extensive review of single-gene disorders, copy number variants, and other chromosomal disorders), and consequently to propose a hierarchical diagnostic strategy with a stepwise evaluation, helping general practitioners/pediatricians and child psychiatrists to collaborate with geneticists and neuropediatricians, in order to search for genetic disorders associated with ASD...
March 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28285739/neuropsychiatric-comorbidities-in-adults-with-phenylketonuria-a-retrospective-cohort-study
#12
Deborah A Bilder, Joyce A Kobori, Jessica L Cohen-Pfeffer, Erin M Johnson, Elaina R Jurecki, Mitzie L Grant
Adults with phenylketonuria (PKU) may experience neurologic and psychiatric disorders, including intellectual disability, anxiety, depression, and neurocognitive dysfunction. Identifying the prevalence and prevalence ratios of these conditions will inform clinical treatment. This nested, case-controlled study used International Classification of Diseases, Ninth Revision (ICD-9) codes from the MarketScan® insurance claims databases from 2006 to 2012 and healthcare claims data for US-based employer and government-sponsored health plans...
March 6, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/28284567/the-analysis-of-three-dimensional-ground-reaction-forces-during-gait-in-children-with-autism-spectrum-disorders
#13
C Z C Hasan, Rozita Jailani, N Md Tahir, Suryani Ilias
Minimal information is known about the three-dimensional (3D) ground reaction forces (GRF) on the gait patterns of individuals with autism spectrum disorders (ASD). The purpose of this study was to investigate whether the 3D GRF components differ significantly between children with ASD and the peer controls. 15 children with ASD and 25 typically developing (TD) children had participated in the study. Two force plates were used to measure the 3D GRF data during walking. Time-series parameterization techniques were employed to extract 17 discrete features from the 3D GRF waveforms...
March 8, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28283846/intervention-for-anxiety-and-problem-behavior-in-children-with-autism-spectrum-disorder-and-intellectual-disability
#14
Lauren J Moskowitz, Caitlin E Walsh, Emile Mulder, Darlene Magito McLaughlin, Greg Hajcak, Edward G Carr, Jennifer R Zarcone
There is little research on the functional assessment and treatment of anxiety and related problem behavior in children with autism spectrum disorder (ASD), particularly those with intellectual and developmental disability (IDD). In a recent study, we evaluated a multimethod strategy for assessing anxiety in children with ASD and IDD (Am J Intellect Dev Disabil 118:419-434, 2013). In the present study, we developed treatments for the anxiety and associated problem behavior in these same children. A multiple baseline design was used to evaluate the effectiveness of a multicomponent intervention package, incorporating individualized strategies from Positive Behavior Support and Cognitive Behavioral Therapy...
March 11, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28277553/the-impact-of-dynamic-seating-on-classroom-behavior-of-students-with-autism-spectrum-disorder
#15
Nader Matin Sadr, Hojjat Allah Haghgoo, Sayyed Ali Samadi, Mehdi Rassafiani, Enayatollah Bakhshi, Hossein Hassanabadi
OBJECTIVE: Children with autism have sitting and on-task behavior problems in class. In this study, the effect of three alternative classroom-seating devices such as regular classroom chairs, therapy balls, and air cushions were examined on students' classroom behavior. MATERIALS & METHODS: 15 students with autism participated in this A1-B-A2-C multiple treatments study from Mashhad's Tabasom School, Mashhad, Iran in 2014. Students' behaviors were video recorded in three phases: sitting on their common chairs during phase A, air-sit cushioned in phase B, and ball chairs in phase C...
2017: Iranian Journal of Child Neurology
https://www.readbyqxmd.com/read/28276079/a-randomized-controlled-trial-to-examine-the-effects-of-the-tackling-teenage-psychosexual-training-program-for-adolescents-with-autism-spectrum-disorder
#16
Kirsten Visser, Kirstin Greaves-Lord, Nouchka T Tick, Frank C Verhulst, Athanasios Maras, Esther J M van der Vegt
BACKGROUND: Previous research underscores the importance of psychosexual guidance for adolescents with autism spectrum disorder (ASD). Such guidance is provided in the Tackling Teenage Training (TTT) program, in which adolescents with ASD receive psycho-education and practice communicative skills regarding topics related to puberty, sexuality, and intimate relationships. This randomized controlled trial investigated the effects of the TTT program on (a) cognitive outcomes (i.e. psychosexual knowledge, and insight in interpersonal boundaries) and (b) behavioral outcomes (i...
March 9, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/28270747/metabolic-dysfunction-underlying-autism-spectrum-disorder-and-potential-treatment-approaches
#17
REVIEW
Ning Cheng, Jong M Rho, Susan A Masino
Autism spectrum disorder (ASD) is characterized by deficits in sociability and communication, and increased repetitive and/or restrictive behaviors. While the etio-pathogenesis of ASD is unknown, clinical manifestations are diverse and many possible genetic and environmental factors have been implicated. As such, it has been a great challenge to identify key neurobiological mechanisms and to develop effective treatments. Current therapies focus on co-morbid conditions (such as epileptic seizures and sleep disturbances) and there is no cure for the core symptoms...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28269016/ensemble-statistical-and-subspace-clustering-model-for-analysis-of-autism-spectrum-disorder-phenotypes
#18
Khalid Al-Jabery, Tayo Obafemi-Ajayi, Gayla R Olbricht, T Nicole Takahashi, Stephen Kanne, Donald Wunsch
Heterogeneity in Autism Spectrum Disorder (ASD) is complex including variability in behavioral phenotype as well as clinical, physiologic, and pathologic parameters. The fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) now diagnoses ASD using a 2-dimensional model based social communication deficits and fixated interests and repetitive behaviors. Sorting out heterogeneity is crucial for study of etiology, diagnosis, treatment and prognosis. In this paper, we present an ensemble model for analyzing ASD phenotypes using several machine learning techniques and a k-dimensional subspace clustering algorithm...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268841/amp-a-platform-for-managing-and-mining-data-in-the-treatment-of-autism-spectrum-disorder
#19
Erik Linstead, Ryan Burns, Duy Nguyen, David Tyler
We introduce AMP (Autism Management Platform), an integrated health care information system for capturing, analyzing, and managing data associated with the diagnosis and treatment of Autism Spectrum Disorder in children. AMP's mobile application simplifies the means by which parents, guardians, and clinicians can collect and share multimedia data with one another, facilitating communication and reducing data redundancy, while simplifying retrieval. Additionally, AMP provides an intelligent web interface and analytics platform which allow physicians and specialists to aggregate and mine patient data in real-time, as well as give relevant feedback to automatically learn data filtering preferences over time...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28266806/a-pilot-study-of-serotonergic-modulation-after-long-term-administration-of-oxytocin-in-autism-spectrum-disorder
#20
Tetsu Hirosawa, Mitsuru Kikuchi, Yasuomi Ouchi, Tetsuya Takahashi, Yuko Yoshimura, Hirotaka Kosaka, Naoki Furutani, Hirotoshi Hiraishi, Mina Fukai, Masamichi Yokokura, Etsuji Yoshikawa, Tomoyasu Bunai, Yoshio Minabe
Oxytocin (OT) and the serotonergic system putatively play important roles in autism spectrum disorder (ASD) etiology and symptoms, but no direct neurobiological evidence exists for long-term OT administration effects on the brain's serotonergic system. This pilot study examined 10 male participants with ASD who were administered OT intranasally for 8-10 weeks in an open-label, single-arm, nonrandomized, and uncontrolled manner. Positron emission tomography (PET) with a radiotracer ((11) C)-3-amino-4-(2-[(dimethylamino)methyl]phenylthio)benzonitrile ((11) C-DASB) was used before and after OT treatment...
March 7, 2017: Autism Research: Official Journal of the International Society for Autism Research
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