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https://www.readbyqxmd.com/read/28918504/autism-spectrum-disorders-and-disease-modeling-using-stem-cells
#1
REVIEW
Anita Brito, Fabiele Baldino Russo, Alysson Renato Muotri, Patricia Cristina Baleeiro Beltrão-Braga
Autism spectrum disorders (ASD) represent a variety of disorders characterized as complex lifelong neurodevelopment disabilities, which may affect the ability of communication and socialization, including typical comportments like repetitive and stereotyped behavior. Other comorbidities are usually present, such as echolalia, hypotonia, intellectual disability and difficulties in processing figured speech. Furthermore, some ASD individuals may present certain abilities, such as eidetic memory, outstanding musical or painting talents and special mathematical skills, among others...
September 16, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28917161/maternal-ssri-exposure-increases-the-risk-of-autistic-offspring-a-meta-analysis-and-systematic-review
#2
S Andalib, M R Emamhadi, S Yousefzadeh-Chabok, S K Shakouri, P F Høilund-Carlsen, M S Vafaee, T M Michel
BACKGROUND: Selective serotonin reuptake inhibitors (SSRIs) are the most common antidepressants used to preclude maternal pregnancy depression. There is a growing body of literature assessing the association of prenatal exposure to SSRIs with autism spectrum disorder (ASD). The present systematic review and meta-analysis reviewed the medical literature and pooled the results of the association of prenatal exposure to SSRIs with ASD. METHODS: Published investigations in English by June 2016 with keywords of selective serotonin reuptake inhibitors, SSRI, autism spectrum disorder, ASD, pregnancy, childhood, children, neurodevelopment were identified using databases PubMed and PMC, MEDLINE, EMBASE, SCOPUS, and Google Scholar...
June 20, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28915150/tics-and-tourette-a-clinical-pathophysiological-and-etiological-review
#3
Russell C Dale
PURPOSE OF REVIEW: Describe developments in the etiological understanding of Tourette syndrome. RECENT FINDINGS: Tourette syndrome is a complex heterogenous clinical syndrome, which is not a unitary entity. Pathophysiological models describe gamma-aminobutyric acid-ergic-associated disinhibition of cortico-basal ganglia motor, sensory and limbic loops. MRI studies support basal ganglia volume loss, with additional white matter and cerebellar changes. Tourette syndrome cause likely involves multiple vulnerability genes and environmental factors...
September 14, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28914080/gender-identity-and-sexual-orientation-in-autism-spectrum-disorder
#4
Rita George, Mark A Stokes
Clinical impressions indicate that there is an overrepresentation of gender-dysphoria within the autism spectrum disorder. However, little is presently known about the demographics of gender-identity issues in autism spectrum disorder. Based upon what little is known, we hypothesized that there would be an increased prevalence of gender-dysphoria among those with autism spectrum disorder compared to a typically developing population. We surveyed gender-dysphoria with the Gender-Identity/Gender-Dysphoria Questionnaire among 90 males and 219 females with autism spectrum disorder and compared these rates to those of 103 males and 158 females without autism spectrum disorder...
September 1, 2017: Autism: the International Journal of Research and Practice
https://www.readbyqxmd.com/read/28898569/altered-task-related-modulation-of-long-range-connectivity-in-children-with-autism
#5
Ajay S Pillai, Danielle McAuliffe, Balaji M Lakshmanan, Stewart H Mostofsky, Nathan E Crone, Joshua B Ewen
Functional connectivity differences between children with autism spectrum disorder (ASD) and typically developing children have been described in multiple datasets. However, few studies examine the task-related changes in connectivity in disorder-relevant behavioral paradigms. In this paper, we examined the task-related changes in functional connectivity using EEG and a movement-based paradigm that has behavioral relevance to ASD. Resting-state studies motivated our hypothesis that children with ASD would show a decreased magnitude of functional connectivity during the performance of a motor-control task...
September 12, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28889839/laser-acupuncture-at-ht7-improves-the-cerebellar-disorders-in-valproic-acid-rat-model-of-autism
#6
Jurairat Khongrum, Jintanaporn Wattanathorn
The novel therapeutic strategy against autism is essential due to the limited therapeutic efficacy. Based on the benefit of laser acupuncture at HT7 acupoint on the neurological disorders related with oxidative stress and inflammation, its benefit on oxidative stress, neuroinflammation, and GABAergic/glutamatergic imbalance in cerebellum of autism have been considered. To elucidate this issue, male rat pups were induced autistic-like conditions by valproic acid (VPA) and treated with laser acupuncture at HT7 acupoint once daily between postnatal Day 14 and Day 40...
August 2017: Journal of Acupuncture and Meridian Studies
https://www.readbyqxmd.com/read/28887900/atypical-brain-responses-to-auditory-spatial-cues-in-adults-with-autism-spectrum-disorder
#7
Veema Lodhia, Michael J Hautus, Blake W Johnson, Jon Brock
The auditory processing atypicalities experienced by many individuals on the autism spectrum disorder might be understood in terms of difficulties parsing the sound energy arriving at the ears into discrete auditory "objects." Here we asked whether autistic adults are able to make use of two important spatial cues to auditory object formation - the relative timing and amplitude of sound energy at the left and right ears. Using electroencephalography, we measured the brain responses of 15 autistic adults and 15 age-and verbal-IQ-matched control participants as they listened to dichotic pitch stimuli - white noise stimuli in which interaural timing or amplitude differences applied to a narrow frequency band of noise typically lead to the perception of a pitch sound that is spatially segregated from the noise...
September 9, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28886113/the-overlap-between-autistic-spectrum-conditions-and-borderline-personality-disorder
#8
Robert B Dudas, Chris Lovejoy, Sarah Cassidy, Carrie Allison, Paula Smith, Simon Baron-Cohen
BACKGROUND: Both people with autism spectrum conditions (ASC) and borderline personality disorder (BPD) are significantly challenged in terms of understanding and responding to emotions and in interpersonal functioning. AIMS: To compare ASC, BPD, and comorbid patients in terms of autistic traits, empathy, and systemizing. METHODS: 624 ASC, 23 BPD, and 16 comorbid (ASC+BPD) patients, and 2,081 neurotypical controls (NC) filled in the Autism Spectrum Quotient (AQ), the Empathy Quotient (EQ) and the Systemizing Quotient-Revised (SQ-R)...
2017: PloS One
https://www.readbyqxmd.com/read/28873291/increase-in-psychoactive-drug-prescriptions-in-the-years-following-autism-spectrum-diagnosis-a-population-based-cohort-study
#9
Caroline Croteau, Laurent Mottron, Nancy Presse, Jean-Eric Tarride, Marc Dorais, Sylvie Perreault
BACKGROUND: Psychoactive medications are commonly prescribed to autistic individuals, but little is known about how their use changes after diagnosis. OBJECTIVES: This study describes the use of psychoactive drugs in children and young adults newly diagnosed with autism spectrum, between the year before and up to 5 years after diagnosis. METHODS: Multivariable logistic regression was used to examine the relationship between the use psychoactive drugs before the first diagnosis of autism spectrum condition (from 1998 to 2010), and the clinical and demographic characteristics, identified from public health care databases in Quebec...
August 18, 2017: Journal of Population Therapeutics and Clinical Pharmacology
https://www.readbyqxmd.com/read/28870688/-what-do-virtual-reality-tools-bring-to-child-and-adolescent-psychiatry
#10
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/28870164/attention-and-motor-deficits-index-non-specific-background-liabilities-that-predict-autism-recurrence-in-siblings
#11
Sabine E Mous, Allan Jiang, Arpana Agrawal, John N Constantino
BACKGROUND: Recent research has demonstrated that subclinical autistic traits of parents amplify the effects of deleterious mutations in the causation of autism spectrum disorder (ASD) in their offspring. Here, we examined the extent to which two neurodevelopmental traits that are non-specific to ASD-inattention/hyperactivity and motor coordination-might contribute to ASD recurrence in siblings of ASD probands. METHODS: Data from a quantitative trait study of 114 ASD probands and their brothers, 26% of whom also had ASD, were analyzed...
September 5, 2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28869354/working-memory-network-alterations-in-high-functioning-adolescents-with-an-autism-spectrum-disorder
#12
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/28861732/autism-spectrum-disorders-and-low-mental-age-diagnostic-stability-and-developmental-outcomes-in-early-childhood
#13
Alexander J Hinnebusch, Lauren E Miller, Deborah A Fein
Some children with autism spectrum disorders (ASDs) exhibit low mental age (Low-MA; i.e., cognitive functioning below 12 months). We examined diagnosis, symptom severity, and development in children with ASD-low MA (n = 25), autistic disorder (n = 111), and PDD-NOS (n = 82) at ages two and four. We predicted that some ASD-low MA children would demonstrate just intellectual impairment and not autism symptoms on follow-up, with social deficits at age two attributable to global delays. Instead, most ASD-low MA children (96%) had an ASD at follow-up, compared to children initially diagnosed with autistic disorder (86...
August 31, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28861339/spatio-temporal-source-cluster-analysis-reveals-fronto-temporal-auditory-change-processing-differences-within-a-shared-autistic-and-schizotypal-trait-phenotype
#14
Talitha C Ford, Will Woods, David P Crewther
Social Disorganisation (SD) is a shared autistic and schizotypal phenotype that is present in the subclinical population. Auditory processing deficits, particularly in mismatch negativity/field (MMN/F) have been reported across both spectrum disorders. This study investigates differences in MMN/F cortical spatio-temporal source activity between higher and lower quintiles of the SD spectrum. Sixteen low (9 female) and 19 high (9 female) SD subclinical adults (18-40years) underwent magnetoencephalography (MEG) during an MMF paradigm where standard tones (50ms) were interrupted by infrequent duration deviants (100ms)...
2017: NeuroImage: Clinical
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
#15
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
#16
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
https://www.readbyqxmd.com/read/28856816/analysis-and-functional-characterization-of-sequence-variations-in-ligand-binding-domain-of-thyroid-hormone-receptors-in-autism-spectrum-disorder-asd-patients
#17
Mahesh Kumar Kalikiri, Madhu Poornima Mamidala, Ananth N Rao, Vidya Rajesh
Autism spectrum disorder (ASD) is a neuro developmental disorder, reported to be on a rise in the past two decades. Thyroid hormone-T3 plays an important role in early embryonic and central nervous system development. T3 mediates its function by binding to thyroid hormone receptors, TRα and TRβ. Alterations in T3 levels and thyroid receptor mutations have been earlier implicated in neuropsychiatric disorders and have been linked to environmental toxins. Limited reports from earlier studies have shown the effectiveness of T3 treatment with promising results in children with ASD and that the thyroid hormone levels in these children was also normal...
August 30, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28852285/knowledge-and-perception-regarding-autism-among-primary-school-teachers-a-cross-sectional-survey-from-pakistan-south-asia
#18
Adil Ayub, Buria Naeem, Wajahat Nazir Ahmed, Suraksha Srichand, Komal Aziz, Brooj Abro, Sehrish Najam, Duraiz Murtaza, Ali Ahmed Janjua, Sara Ali, Imtiaz Jehan
BACKGROUND: Early detection and intervention seem to improve development in autistic children, and teachers form an important part of their early social environment. OBJECTIVES: The objective of this study was to assess baseline knowledge and misconceptions regarding autism among school teachers and evaluate factors influencing their knowledge. MATERIALS AND METHODS: This is a cross-sectional survey enrolling primary school teachers using a self-administered questionnaire...
July 2017: Indian Journal of Community Medicine
https://www.readbyqxmd.com/read/28843862/altered-synaptic-phospholipid-signaling-in-prg-1-deficient-mice-induces-exploratory-behavior-and-motor-hyperactivity-resembling-psychiatric-disorders
#19
Patrick Schneider, Sandra Petzold, Angela Sommer, Robert Nitsch, Herbert Schwegler, Johannes Vogt, Thomas Roskoden
Plasticity related gene 1 (PRG-1) is a neuron specific membrane protein located at the postsynaptic density of glutamatergic synapses. PRG-1 modulates signaling pathways of phosphorylated lipid substrates such as lysophosphatidic acid (LPA). Deletion of PRG-1 increases presynaptic glutamate release probability leading to neuronal over-excitation. However, due to its cortical expression, PRG-1 deficiency leading to increased glutamatergic transmission is supposed to also affect motor pathways. We therefore analyzed the effects of PRG-1 function on exploratory and motor behavior using homozygous PRG-1 knockout (PRG-1(-/-)) mice and PRG-1/LPA2-receptor double knockout (PRG-1(-/-)/LPA2(-/-)) mice in two open field settings of different size and assessing motor behavior in the Rota Rod test...
August 24, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28843629/mental-health-on-screen-a-dsm-5-dissection-of-portrayals-of-autism-spectrum-disorders-in-film-and-tv
#20
Anders Nordahl-Hansen, Magnus Tøndevold, Sue Fletcher-Watson
Portrayals of characters with autism spectrum disorders (ASD) in films and TV series are subject to intense debate over whether such representations are accurate. Inaccurate portrayals are a concern as they may lead to increased stereotypes toward the condition. We investigate whether portrayals of characters with autism spectrum disorder in film and TV-series align with DSM-5 diagnostic criteria. Our data show that characters present a full range of characteristics described in the DSM-5. The meaning of this finding is discussed in relation to potential educational value of on screen portrayals and the notion of authenticity in representing the autistic experience...
August 23, 2017: Psychiatry Research
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