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https://www.readbyqxmd.com/read/28922833/the-knockout-of-synapsin-ii-in-mice-impairs-social-behavior-and-functional-connectivity-generating-an-asd-like-phenotype
#1
Caterina Michetti, Angela Caruso, Marco Pagani, Mara Sabbioni, Lucian Medrihan, Gergely David, Alberto Galbusera, Monica Morini, Alessandro Gozzi, Fabio Benfenati, Maria Luisa Scattoni
Autism spectrum disorders (ASD) and epilepsy are neurodevelopmental conditions that appear with high rate of co-occurrence, suggesting the possibility of a common genetic basis. Mutations in Synapsin (SYN) genes, particularly SYN1 and SYN2, have been recently associated with ASD and epilepsy in humans. Accordingly, mice lacking Syn1 or Syn2, but not Syn3, experience epileptic seizures and display autistic-like traits that precede the onset of seizures. Here, we analyzed social behavior and ultrasonic vocalizations emitted in 2 social contexts by SynI, SynII, or SynIII mutants and show that SynII mutants display the most severe ASD-like phenotype...
October 1, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28922520/a-review-of-joint-attention-and-social-cognitive-brain-systems-in-typical-development-and-autism-spectrum-disorder
#2
Peter Mundy
This article provides a review of the increasingly detailed literature on the neurodevelopment of joint attention. Many findings from this literature support and inform the hypothesis that the neurodevelopment of joint attention contributes to the functional development of neural systems for human social cognition. Joint attention begins to develop by 5 months of age and is tantamount to the ability to adopt a common perspective with another person. It involves a whole-brain system with nodes in the: (a) dorsal and medial frontal cortex, (b) orbital frontal/insula cortex, (c) anterior/ posterior cingulate cortex, (d) superior temporal cortex, (e) precuneus/parietal cortex, and (f) amygdala and striatum...
September 18, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28921735/three-shades-of-grey-detecting-brain-abnormalities-in-children-with-autism-by-using-source-voxel-and-surface-based-morphometry
#3
Edoardo Pappaianni, Roma Siugzdaite, Sofie Vettori, Paola Venuti, Remo Job, Alessandro Grecucci
Autistic spectrum disorder (ASD) is a neurodevelopmental disorder characterized by deficits in social interactions, communication and stereotyped behavior. Recent evidence from neuroimaging supports the hypothesis that ASD deficits in adults may be related to abnormalities in a specific frontal-temporal network (Autism-specific Structural Network, ASN). To see whether these results extend to younger children and to better characterize these abnormalities, we applied three morphometric methods on brain grey matter of children with and without ASD...
September 16, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28917111/-11-c-pf-3274167-as-a-pet-radiotracer-of-oxytocin-receptors-radiosynthesis-and-evaluation-in-rat-brain
#4
Benjamin Vidal, Iuliia A Karpenko, François Liger, Sylvain Fieux, Caroline Bouillot, Thierry Billard, Marcel Hibert, Luc Zimmer
INTRODUCTION: Oxytocin plays a major role in the regulation of social interactions in mammals by interacting with the oxytocin receptor (OTR) expressed in the brain. Furthermore, the oxytocin system appears as a possible therapeutic target in autism spectrum disorders and other psychiatric troubles, justifying current pharmacological researches. Since no specific PET radioligand is currently available to image OTR in the brain, the aim of this study was to radiolabel the specific OTR antagonist PF-3274167 and to evaluate [(11)C]PF-3274167 as a potential PET tracer for OTR in rat brains...
August 2, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/28917059/direct-modulation-of-aberrant-brain-network-connectivity-through-real-time-neurofeedback
#5
Michal Ramot, Sara Kimmich, Javier Gonzalez-Castillo, Vinai Roopchansingh, Haroon Popal, Emily White, Stephen J Gotts, Alex Martin
The existence of abnormal connectivity patterns between resting state networks in neuropsychiatric disorders, including Autism Spectrum Disorder (ASD), has been well established. Traditional treatment methods in ASD are limited, and do not address the aberrant network structure. Using real-time fMRI neurofeedback, we directly trained 3 brain nodes in participants with ASD, in which the aberrant connectivity has been shown to correlate with symptom severity. Desired network connectivity patterns were reinforced in real-time, without participants' awareness of the training taking place...
September 16, 2017: ELife
https://www.readbyqxmd.com/read/28912708/remodeling-pearson-s-correlation-for-functional-brain-network-estimation-and-autism-spectrum-disorder-identification
#6
Weikai Li, Zhengxia Wang, Limei Zhang, Lishan Qiao, Dinggang Shen
Functional brain network (FBN) has been becoming an increasingly important way to model the statistical dependence among neural time courses of brain, and provides effective imaging biomarkers for diagnosis of some neurological or psychological disorders. Currently, Pearson's Correlation (PC) is the simplest and most widely-used method in constructing FBNs. Despite its advantages in statistical meaning and calculated performance, the PC tends to result in a FBN with dense connections. Therefore, in practice, the PC-based FBN needs to be sparsified by removing weak (potential noisy) connections...
2017: Frontiers in Neuroinformatics
https://www.readbyqxmd.com/read/28892073/progress-and-roadblocks-in-the-search-for-brain-based-biomarkers-of-autism-and-attention-deficit-hyperactivity-disorder
#7
REVIEW
L Q Uddin, D R Dajani, W Voorhies, H Bednarz, R K Kana
Children with neurodevelopmental disorders benefit most from early interventions and treatments. The development and validation of brain-based biomarkers to aid in objective diagnosis can facilitate this important clinical aim. The objective of this review is to provide an overview of current progress in the use of neuroimaging to identify brain-based biomarkers for autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD), two prevalent neurodevelopmental disorders. We summarize empirical work that has laid the foundation for using neuroimaging to objectively quantify brain structure and function in ways that are beginning to be used in biomarker development, noting limitations of the data currently available...
August 22, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28889821/relating-asd-symptoms-to-well-being-moving-across-different-construct-levels
#8
M K Deserno, D Borsboom, S Begeer, H M Geurts
BACKGROUND: Little is known about the specific factors that contribute to the well-being (WB) of individuals with autism spectrum disorder (ASD). A plausible hypothesis is that ASD symptomatology has a direct negative effect on WB. In the current study, the emerging tools of network analysis allow to explore the functional interdependencies between specific symptoms of ASD and domains of WB in a multivariate framework. We illustrate how studying both higher-order (total score) and lower-order (subscale) representations of ASD symptomatology can clarify the interrelations of factors relevant for domains of WB...
September 11, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28887651/a-cell-culture-model-for-investigation-of-synapse-influenceability-epigenetics-expression-and-function-of-gene-targets-important-for-synapse-formation-and-preservation-in-sh-sy5y-neuroblastoma-cells-differentiated-by-retinoic-acid
#9
Kirsten Jahn, C Wieltsch, N Blumer, M Mehlich, H Pathak, A Q Khan, H Hildebrandt, H Frieling
SH-SY5Y neuroblastoma cells are frequently used for different neuronal cell culture models. As there is no "gold-standard", miscellaneous protocols exist to differentiate these cells into a neuronal cell type. Here, the aim was to find a differentiation condition making cells suitable for investigation of influenceability of synapses by environmental conditions in pharmacologic experiments. For this purpose, effects on synapse molecules should be somehow rateable and cells should be usable for functional analysis like calcium imaging...
September 8, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28886147/detection-of-atypical-network-development-patterns-in-children-with-autism-spectrum-disorder-using-magnetoencephalography
#10
Fang Duan, Katsumi Watanabe, Yuko Yoshimura, Mitsuru Kikuchi, Yoshio Minabe, Kazuyuki Aihara
Autism spectrum disorder (ASD) is a developmental disorder that involves developmental delays. It has been hypothesized that aberrant neural connectivity in ASD may cause atypical brain network development. Brain graphs not only describe the differences in brain networks between clinical and control groups, but also provide information about network development within each group. In the present study, graph indices of brain networks were estimated in children with ASD and in typically developing (TD) children using magnetoencephalography performed while the children viewed a cartoon video...
2017: PloS One
https://www.readbyqxmd.com/read/28877317/association-of-white-matter-structure-with-autism-spectrum-disorder-and-attention-deficit-hyperactivity-disorder
#11
Yuta Aoki, Yuliya N Yoncheva, Bosi Chen, Tanmay Nath, Dillon Sharp, Mariana Lazar, Pablo Velasco, Michael P Milham, Adriana Di Martino
Importance: Clinical overlap between autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) is increasingly appreciated, but the underlying brain mechanisms remain unknown to date. Objective: To examine associations between white matter organization and 2 commonly co-occurring neurodevelopmental conditions, ASD and ADHD, through both categorical and dimensional approaches. Design, Setting, and Participants: This investigation was a cross-sectional diffusion tensor imaging (DTI) study at an outpatient academic clinical and research center, the Department of Child and Adolescent Psychiatry at New York University Langone Medical Center...
September 6, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28871217/diagnosing-autism-spectrum-disorder-from-brain-resting-state-functional-connectivity-patterns-using-a-deep-neural-network-with-a-novel-feature-selection-method
#12
Xinyu Guo, Kelli C Dominick, Ali A Minai, Hailong Li, Craig A Erickson, Long J Lu
The whole-brain functional connectivity (FC) pattern obtained from resting-state functional magnetic resonance imaging data are commonly applied to study neuropsychiatric conditions such as autism spectrum disorder (ASD) by using different machine learning models. Recent studies indicate that both hyper- and hypo- aberrant ASD-associated FCs were widely distributed throughout the entire brain rather than only in some specific brain regions. Deep neural networks (DNN) with multiple hidden layers have shown the ability to systematically extract lower-to-higher level information from high dimensional data across a series of neural hidden layers, significantly improving classification accuracy for such data...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28870688/-what-do-virtual-reality-tools-bring-to-child-and-adolescent-psychiatry
#13
S Bioulac, E de Sevin, P Sagaspe, A Claret, P Philip, J A Micoulaud-Franchi, M P Bouvard
Virtual reality is a relatively new technology that enables individuals to immerse themselves in a virtual world. It offers several advantages including a more realistic, lifelike environment that may allow subjects to "forget" they are being assessed, allow a better participation and an increased generalization of learning. Moreover, the virtual reality system can provide multimodal stimuli, such as visual and auditory stimuli, and can also be used to evaluate the patient's multimodal integration and to aid rehabilitation of cognitive abilities...
September 1, 2017: L'Encéphale
https://www.readbyqxmd.com/read/28869842/changes-in-intrinsic-local-connectivity-after-reading-intervention-in-children-with-autism
#14
Jose O Maximo, Donna L Murdaugh, Sarah O'Kelley, Rajesh K Kana
Most of the existing behavioral and cognitive intervention programs in autism spectrum disorders (ASD) have not been tested at the neurobiological level, thus falling short of finding quantifiable neurobiological changes underlying behavioral improvement. The current study takes a translational neuroimaging approach to test the impact of a structured visual imagery-based reading intervention on improving reading comprehension and assessing its underlying local neural circuitry. Behavioral and resting state functional MRI (rs-fMRI) data were collected from children with ASD who were randomly assigned to an Experimental group (ASD-EXP; n=14) and a Wait-list control group (ASD-WLC; n=14)...
September 1, 2017: Brain and Language
https://www.readbyqxmd.com/read/28869354/working-memory-network-alterations-in-high-functioning-adolescents-with-an-autism-spectrum-disorder
#15
Evelien M Barendse, Lisanne J Schreuder, Geert Thoonen, Marc P H Hendriks, Roy P C Kessels, Walter H Backes, Albert P Aldenkamp, Jacobus F A Jansen
AIM: People with autism spectrum disorder (ASD) typically have deficits in the working memory (WM) system. Working memory is found to be an essential chain in successfully navigating in the social world. We hypothesize that brain networks for WM have an altered network integrity in ASD compared to controls. METHODS: 13 adolescents (1 female) with autistic disorder (n = 1), Asperger's disorder (n = 7), and pervasive developmental disorder not otherwise specified (n = 5), and 13 typically developing control adolescents (1 female) participated in this study...
September 4, 2017: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/28867997/autism-spectrum-disorder-related-functional-connectivity-changes-in-the-language-network-in-children-adolescents-and-adults
#16
Yubu Lee, Bo-Yong Park, Oliver James, Seong-Gi Kim, Hyunjin Park
Autism spectrum disorder (ASD) is a neurodevelopmental disability with global implication. Altered brain connectivity in the language network has frequently been reported in ASD patients using task-based functional magnetic resonance imaging (fMRI) compared to typically developing (TD) participants. Most of these studies have focused on a specific age group or mixed age groups with ASD. In the current study, we investigated age-related changes in functional connectivity related measure, degree centrality (DC), in the language network across three age groups with ASD (113 children, 113 adolescents and 103 adults) using resting-state fMRI data collected from the autism brain imaging data exchange repository...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28866740/factor-analysis-of-the-srs-22-outcome-assessment-instrument-in-patients-with-adult-spinal-deformity
#17
A F Mannion, A Elfering, J Bago, F Pellise, A Vila-Casademunt, S Richner-Wunderlin, M Domingo-Sàbat, I Obeid, E Acaroglu, A Alanay, F S Pérez-Grueso, C R Baldus, L Y Carreon, K H Bridwell, S D Glassman, F Kleinstück
PURPOSE: Designed for patients with adolescent idiopathic scoliosis, the SRS-22 is now widely used as an outcome instrument in patients with adult spinal deformity (ASD). No studies have confirmed the four-factor structure (pain, function, self-image, mental health) of the SRS-22 in ASD and under different contexts. Factorial invariance of an instrument over time and in different languages is essential to allow for precise interpretations of treatment success and comparisons across studies...
September 2, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28866472/second-harmonic-generation-microscopy-as-a-tool-for-the-early-detection-of-crystallization-in-spray-dried-dispersions
#18
Clara Correa-Soto, Niraj S Trasi, Paul D Schmitt, Yongchao Su, Zhen Liu, Elise Miller, Narayan Variankaval, Patrick J Marsac, Garth J Simpson, Lynne S Taylor
Various techniques have been used to detect crystallization in amorphous solid dispersions (ASD). However, most of these techniques do not enable the detection of very low levels of crystallinity (<1%). The aim of the current study was to compare the sensitivity of second harmonic generation (SHG) microscopy with powder X-ray diffraction (XRPD) in detecting the presence of crystals in low drug loading amorphous solid dispersions. Amorphous solid dispersions of the poorly water soluble compounds, flutamide (FTM, 15wt...
August 24, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28861007/cognitive-behavioral-therapy-for-obsessive-compulsive-disorder-with-and-without-autism-spectrum-disorder-gray-matter-differences-associated-with-poor-outcome
#19
Aki Tsuchiyagaito, Yoshiyuki Hirano, Kenichi Asano, Fumiyo Oshima, Sawako Nagaoka, Yoshitake Takebayashi, Koji Matsumoto, Yoshitada Masuda, Masaomi Iyo, Eiji Shimizu, Akiko Nakagawa
Cognitive behavioral therapy (CBT) is an effective treatment for obsessive-compulsive disorder (OCD) and is also applicable to patients with both OCD and autism spectrum disorder (ASD). However, previous studies have reported that CBT for patients with both OCD and ASD might be less effective than for patients with OCD alone. In addition, there is no evidence as to why autistic traits might be risk factors. Therefore, we investigated whether comorbidity between ASD and OCD may significantly affect treatment outcome and discovered predictors of CBT outcomes using structural magnetic resonance imaging (MRI) data...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28861001/increased-gray-matter-volume-and-resting-state-functional-connectivity-in-somatosensory-cortex-and-their-relationship-with-autistic-symptoms-in-young-boys-with-autism-spectrum-disorder
#20
Jia Wang, Kuang Fu, Lei Chen, Xujun Duan, Xiaonan Guo, Heng Chen, Qiong Wu, Wei Xia, Lijie Wu, Huafu Chen
Autism spectrum disorder (ASD) has been widely recognized as a complex neurodevelopmental disorder. A large number of neuroimaging studies suggest abnormalities in brain structure and function of patients with ASD, but there is still no consistent conclusion. We sought to investigate both of the structural and functional brain changes in 3-7-year-old children with ASD compared with typically developing controls (TDs), and to assess whether these alterations are associated with autistic behavioral symptoms. Firstly, we applied an optimized method of voxel-based morphometry (VBM) analysis on structural magnetic resonance imaging (sMRI) data to assess the differences of gray matter volume (GMV) between 31 autistic boys aged 3-7 and 31 age- and handness-matched male TDs...
2017: Frontiers in Physiology
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