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https://www.readbyqxmd.com/read/28638324/stochastic-signatures-of-involuntary-head-micro-movements-can-be-used-to-classify-females-of-abide-into-different-subtypes-of-neurodevelopmental-disorders
#1
Elizabeth B Torres, Sejal Mistry, Carla Caballero, Caroline P Whyatt
Background: The approximate 5:1 male to female ratio in clinical detection of Autism Spectrum Disorder (ASD) prevents research from characterizing the female phenotype. Current open access repositories [such as those in the Autism Brain Imaging Data Exchange (ABIDE I-II)] contain large numbers of females to help begin providing a new characterization of females on the autistic spectrum. Here we introduce new methods to integrate data in a scale-free manner from continuous biophysical rhythms of the nervous systems and discrete (ordinal) observational scores...
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28633478/efficacy-of-3d-transoesophageal-echocardiography-for-transcatheter-device-closure-of-atrial-septal-defect-without-balloon-sizing
#2
Jeong Yoon Jang, Ran Heo, Min Soo Cho, Jaeseok Bae, Jung Ae Hong, Sahmin Lee, Jung-Min Ahn, Duk-Woo Park, Dae-Hee Kim, Duk-Hyun Kang, Jae-Kwan Song, Jong-Min Song
Aims: Using balloon sizing to determine device size may cause complications and increase procedure time in performing transcatheter closure of atrial septal defect (ASD). We aimed to validate the clinical utility of a formula using measurements from 3D transoesophageal echocardiography (TOE) images in performing the procedure without balloon sizing. Methods and results: We enrolled 248 consecutive patients with ASD in a prospective registry. In the first tier (n = 53), we determined the device size before the procedure using our formula and performed balloon sizing during the procedure to verify our decision...
June 19, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28633299/structural-covariance-networks-in-children-with-autism-or-adhd
#3
R A I Bethlehem, R Romero-Garcia, E Mak, E T Bullmore, S Baron-Cohen
Background: While autism and attention-deficit/hyperactivity disorder (ADHD) are considered distinct conditions from a diagnostic perspective, clinically they share some phenotypic features and have high comorbidity. Regardless, most studies have focused on only one condition, with considerable heterogeneity in their results. Taking a dual-condition approach might help elucidate shared and distinct neural characteristics. Method: Graph theory was used to analyse topological properties of structural covariance networks across both conditions and relative to a neurotypical (NT; n = 87) group using data from the ABIDE (autism; n = 62) and ADHD-200 datasets (ADHD; n = 69)...
June 13, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28631578/the-journey-to-autism-insights-from-neuroimaging-studies-of-infants-and-toddlers
#4
Jason J Wolff, Suma Jacob, Jed T Elison
By definition, autism spectrum disorder (ASD) is a neurodevelopmental disorder that emerges during early childhood. It is during this time that infants and toddlers transition from appearing typical across multiple domains to exhibiting the behavioral phenotype of ASD. Neuroimaging studies focused on this period of development have provided crucial knowledge pertaining to this process, including possible mechanisms underlying pathogenesis of the disorder and offering the possibility of prodromal or presymptomatic prediction of risk...
June 20, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/28622901/tridimensional-analysis-of-rotatory-subluxation-and-sagittal-spinopelvic-alignment-in-the-setting-of-adult-spinal-deformity
#5
Emmanuelle Ferrero, Renaud Lafage, Bassel G Diebo, Vincent Challier, Brice Illharreborde, Frank Schwab, Wafa Skalli, Pierre Guigui, Virginie Lafage
STUDY DESIGN: Retrospective single-center. OBJECTIVE: To investigate rotatory subluxation (RS) in adult spinal deformity (ASD) with three-dimensional (3D) stereoradiographic images and analyze relationships between RS, transverse plane parameters, spinopelvic parameters, and clinical outcomes. BACKGROUND: Recent research has demonstrated that sagittal plane malalignment and listhesis correlate with ASD patient-reported outcomes. However, there is still a lack of knowledge regarding the clinical impact of 3D evaluation and rotatory subluxation...
July 2017: Spine Deformity
https://www.readbyqxmd.com/read/28622528/band-specific-atypical-functional-connectivity-pattern-in-childhood-autism-spectrum-disorder
#6
Tetsuya Takahashi, Teruya Yamanishi, Sou Nobukawa, Shinya Kasakawa, Yuko Yoshimura, Hirotoshi Hiraishi, Chiaki Hasegawa, Takashi Ikeda, Tetsu Hirosawa, Toshio Munesue, Haruhiro Higashida, Yoshio Minabe, Mitsuru Kikuchi
OBJECTIVE: Altered brain connectivity has been theorized as a key neural underpinning of autism spectrum disorder (ASD), but recent investigations have revealed conflicting patterns of connectivity, particularly hyper-connectivity and hypo-connectivity across age groups. The application of graph theory to neuroimaging data has become an effective approach for characterizing topographical patterns of large-scale functional networks. We used a graph approach to investigate alteration of functional networks in childhood ASD...
May 23, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28619530/neural-networks-underlying-language-and-social-cognition-during-self-other-processing-in-autism-spectrum-disorders
#7
Rajesh K Kana, Emma B Sartin, Carl Stevens, Hrishikesh D Deshpande, Christopher Klein, Mark R Klinger, Laura Grofer Klinger
The social communication impairments defining autism spectrum disorders (ASD) may be built upon core deficits in perspective-taking, language processing, and self-other representation. Self-referential processing entails the ability to incorporate self-awareness, self-judgment, and self-memory in information processing. Very few studies have examined the neural bases of integrating self-other representation and semantic processing in individuals with ASD. The main objective of this functional MRI study is to examine the role of language and social brain networks in self-other processing in young adults with ASD...
June 12, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28616275/transthoracic-echocardiography-is-a-safe-alternative-for-assessment-and-guidance-of-transcatheter-closure-of-secundum-atrial-septal-defect-in-children
#8
Alban-Elouen Baruteau, Sébastien Hascoët, Alain Fraisse
BACKGROUND: 2D-transesophageal echocardiography (TEE) is routinely performed to guide percutaneous ASD closure in children. We aimed to assess whether two-dimensional (2D)-transthoracic echocardiography (TTE) is a safe alternative for assessment and guidance of atrial septal defect (ASD) closure in unselected children. METHODS: We performed a retrospective single-center study including 389 consecutive children aged less than 15-year-old who underwent percutaneous ASD closure under 2D-TEE (1998-2005, n=133) or 2D-TTE (2005-2014, n=256)...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28612373/reduced-reward-related-neural-response-to-mimicry-in-individuals-with-autism
#9
C-T Hsu, J Neufeld, B Chakrabarti
Mimicry is a facilitator of social bonds in humans, from infancy. This facilitation is made possible through changing the reward value of social stimuli, e.g. we like and affiliate more with people who mimic us. Autism Spectrum Disorders (ASD) are marked by difficulties in forming social bonds. In this study, we investigate whether the reward-related neural response to being mimicked is altered in individuals with ASD, using a simple conditioning paradigm. Multiple studies in humans and nonhuman primates have established a crucial role for the ventral striatal (VS) region in responding to rewards...
June 14, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28611219/inhibitory-engrams-in-perception-and-memory
#10
Helen C Barron, Tim P Vogels, Timothy E Behrens, Mani Ramaswami
Nervous systems use excitatory cell assemblies to encode and represent sensory percepts. Similarly, synaptically connected cell assemblies or "engrams" are thought to represent memories of past experience. Multiple lines of recent evidence indicate that brain systems create and use inhibitory replicas of excitatory representations for important cognitive functions. Such matched "inhibitory engrams" can form through homeostatic potentiation of inhibition onto postsynaptic cells that show increased levels of excitation...
June 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28609458/dendritic-overgrowth-and-elevated-erk-signaling-during-neonatal-development-in-a-mouse-model-of-autism
#11
Ning Cheng, Fawaz Alshammari, Elizabeth Hughes, Maryam Khanbabaei, Jong M Rho
Autism spectrum disorder (hereafter referred to as "ASD") is a heterogeneous neurodevelopmental condition characterized by impaired social communication and interactions, and restricted, repetitive activities or interests. Alterations in network connectivity and memory function are frequently observed in autism patients, often involving the hippocampus. However, specific changes during early brain development leading to disrupted functioning remain largely unclear. Here, we investigated the development of dendritic arbor of hippocampal CA1 pyramidal neurons in the BTBR T+tf/J (BTBR) mouse model of autism...
2017: PloS One
https://www.readbyqxmd.com/read/28607376/reduced-preference-for-social-rewards-in-a-novel-tablet-based-task-in-young-children-with-autism-spectrum-disorders
#12
Liliana Ruta, Francesca Isabella Famà, Giuseppe Massimo Bernava, Elisa Leonardi, Gennaro Tartarisco, Alessandra Falzone, Giovanni Pioggia, Bhismadev Chakrabarti
Atypical responsivity to social rewards has been observed in young children with or at risk of Autism Spectrum Disorders (ASD). These observations contributed to the hypothesis of reduced social motivation in ASD. In the current study we develop a novel task to test social reward preference using a tablet computer (iPad), where two differently coloured buttons were associated with a social and a nonsocial rewarding image respectively. 63 young children, aged 14-68 months, with and without a diagnosis of ASD took part in the study...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28607173/tactile-defensiveness-and-impaired-adaptation-of-neuronal-activity-in-the-fmr1-knockout-mouse-model-of-autism
#13
Cynthia X He, Daniel A Cantu, Shilpa S Mantri, William A Zeiger, Anubhuti Goel, Carlos Portera-Cailliau
Sensory hypersensitivity is a common symptom in autism spectrum disorders (ASDs), including Fragile X Syndrome (FXS), and frequently leads to tactile defensiveness. In mouse models of ASDs, there is mounting evidence of neuronal and circuit hyperexcitability in several brain regions, which could contribute to sensory hypersensitivity. However, it is not yet known whether or how sensory stimulation might trigger abnormal sensory processing at the circuit level or abnormal behavioral responses in ASD mouse models, especially during an early developmental time when experience-dependent plasticity shapes such circuits...
June 12, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28603492/magnetoencephalographic-imaging-of-auditory-and-somatosensory-cortical-responses-in-children-with-autism-and-sensory-processing-dysfunction
#14
Carly Demopoulos, Nina Yu, Jennifer Tripp, Nayara Mota, Anne N Brandes-Aitken, Shivani S Desai, Susanna S Hill, Ashley D Antovich, Julia Harris, Susanne Honma, Danielle Mizuiri, Srikantan S Nagarajan, Elysa J Marco
This study compared magnetoencephalographic (MEG) imaging-derived indices of auditory and somatosensory cortical processing in children aged 8-12 years with autism spectrum disorder (ASD; N = 18), those with sensory processing dysfunction (SPD; N = 13) who do not meet ASD criteria, and typically developing control (TDC; N = 19) participants. The magnitude of responses to both auditory and tactile stimulation was comparable across all three groups; however, the M200 latency response from the left auditory cortex was significantly delayed in the ASD group relative to both the TDC and SPD groups, whereas the somatosensory response of the ASD group was only delayed relative to TDC participants...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28601369/body-representation-difficulties-in-children-and-adolescents-with-autism-may-be-due-to-delayed-development-of-visuo-tactile-temporal-binding
#15
Danielle Ropar, Katie Greenfield, Alastair D Smith, Mark Carey, Roger Newport
Recent research suggests visuo-tactile binding is temporally extended in autism spectrum disorders (ASD), although it is not clear whether this specifically underlies altered body representation in this population. In the current study children and adolescents with ASD, and typically developing controls, placed their hand into mediated reality system (MIRAGE) and saw two identical live video images of their own right hand. One image was in the proprioceptively correct location (veridical hand) and the other was displaced to either side...
April 27, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28600558/look-me-in-the-eyes-constraining-gaze-in-the-eye-region-provokes-abnormally-high-subcortical-activation-in-autism
#16
Nouchine Hadjikhani, Jakob Åsberg Johnels, Nicole R Zürcher, Amandine Lassalle, Quentin Guillon, Loyse Hippolyte, Eva Billstedt, Noreen Ward, Eric Lemonnier, Christopher Gillberg
Individuals with Autism Spectrum Disorder (ASD) seem to have difficulties looking others in the eyes, but the substrate for this behavior is not well understood. The subcortical pathway, which consists of superior colliculus, pulvinar nucleus of the thalamus, and amygdala, enables rapid and automatic face processing. A specific component of this pathway - i.e., the amygdala - has been shown to be abnormally activated in paradigms where individuals had to specifically attend to the eye-region; however, a direct examination of the effect of manipulating the gaze to the eye-regions on all the components of the subcortical system altogether has never been performed...
June 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28599002/social-orienting-and-joint-attention-in-preschoolers-with-autism-spectrum-disorders
#17
Martina Franchini, Bronwyn Glaser, Hilary Wood de Wilde, Edouard Gentaz, Stephan Eliez, Marie Schaer
Children with Autism Spectrum Disorders (ASD) orient less to socially salient stimuli, such as dynamic social images, than typically developing children. In turn, this lack of social orienting is thought to impair affected individuals' socio communicative development. Here, we aim to explore the relationship between time spent on dynamic social images and ASD behaviors, such as joint attention and communication, in preschoolers on the autism spectrum. In this study, social orienting is measured using eye-tracking during a task consisting of side-by-side presentations of dynamic social images and dynamic geometric images...
2017: PloS One
https://www.readbyqxmd.com/read/28592562/functional-neuroimaging-of-high-risk-6-month-old-infants-predicts-a-diagnosis-of-autism-at-24-months-of-age
#18
Robert W Emerson, Chloe Adams, Tomoyuki Nishino, Heather Cody Hazlett, Jason J Wolff, Lonnie Zwaigenbaum, John N Constantino, Mark D Shen, Meghan R Swanson, Jed T Elison, Sridhar Kandala, Annette M Estes, Kelly N Botteron, Louis Collins, Stephen R Dager, Alan C Evans, Guido Gerig, Hongbin Gu, Robert C McKinstry, Sarah Paterson, Robert T Schultz, Martin Styner, Bradley L Schlaggar, John R Pruett, Joseph Piven
Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by social deficits and repetitive behaviors that typically emerge by 24 months of age. To develop effective early interventions that can potentially ameliorate the defining deficits of ASD and improve long-term outcomes, early detection is essential. Using prospective neuroimaging of 59 6-month-old infants with a high familial risk for ASD, we show that functional connectivity magnetic resonance imaging correctly identified which individual children would receive a research clinical best-estimate diagnosis of ASD at 24 months of age...
June 7, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28591037/different-surgical-approaches-for-the-treatment-of-adjacent-segment-diseases-after-anterior-cervical-fusion-a-retrospective-study-of-49-patients
#19
Feng Wang, Peng Wang, De-Chao Miao, Wei Du, Yong Shen
Studies in the literature have not delineated the surgical approaches of symptomatic adjacent segment diseases (ASDs) in patients undergoing reoperation after an initial anterior cervical fusion (ACF). The purpose of this study was to determine the optimal surgical approaches of ASD and the incidence of the dysphagia after reoperation.This was a retrospective study of 49 patients with ASD after an initial ACF surgery, which had undergone a reoperation at our medical center between January 2010 and December 2014...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28588433/intragenic-cntnap2-deletions-a-bridge-too-far
#20
REVIEW
Martin Poot
Intragenic deletions of the contactin-associated protein-like 2 gene (CNTNAP2) have been found in patients with Gilles de la Tourette syndrome, intellectual disability (ID), obsessive compulsive disorder, cortical dysplasia-focal epilepsy syndrome, autism, schizophrenia, Pitt-Hopkins syndrome, stuttering, and attention deficit hyperactivity disorder. A variety of molecular mechanisms, such as loss of transcription factor binding sites and perturbation of penetrance and expressivity, have been proposed to account for the phenotypic variability resulting from CNTNAP2 mutations...
May 2017: Molecular Syndromology
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