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https://www.readbyqxmd.com/read/27911014/the-effectiveness-of-an-outdoor-adventure-programme-for-young-children-with-autism-spectrum-disorder-a-controlled-study
#1
Ditza A Zachor, Shira Vardi, Shani Baron-Eitan, Inbal Brodai-Meir, Noa Ginossar, Esther Ben-Itzchak
AIM: Outdoor adventure programmes aim to improve interpersonal relationships using adventurous activities. The current study examined the effectiveness of an outdoor adventure programme in children with autism spectrum disorders (ASD). METHOD: The study included 51 participants (40 males, 11 females; age 3y 4mo-7y 4mo) enrolled in ASD special education kindergartens. Only the intervention group (n=30) participated in the outdoor adventure programme for 13 weeks, completing challenging physical activities that required cooperation and communication with peers and instructors...
December 2, 2016: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/27899712/disparity-in-report-of-autism-related-behaviors-by-social-demographic-characteristics-findings-from-a-community-based-study-in-taiwan
#2
Peng-Chou Tsai, Rebecca A Harrington, For-Wey Lung, Li-Ching Lee
The Social Communication Questionnaire is one of the most commonly used screening tools for autism spectrum disorder. The Social Communication Questionnaire is a caregiver-reported questionnaire with 40 items based on questions from the Autism Diagnostic Interview-Revised. This study collected Social Communication Questionnaire data from a community-based, multi-stage case identification design epidemiologic study in one socioeconomically disadvantaged county in Taiwan. The Social Communication Questionnaire was distributed to 3034 school children, aged 6-8 years...
November 29, 2016: Autism: the International Journal of Research and Practice
https://www.readbyqxmd.com/read/27899710/quantifying-and-exploring-camouflaging-in-men-and-women-with-autism
#3
Meng-Chuan Lai, Michael V Lombardo, Amber Nv Ruigrok, Bhismadev Chakrabarti, Bonnie Auyeung, Peter Szatmari, Francesca Happé, Simon Baron-Cohen
Autobiographical descriptions and clinician observations suggest that some individuals with autism, particularly females, 'camouflage' their social communication difficulties, which may require considerable cognitive effort and lead to increased stress, anxiety and depression. Using data from 60 age- and IQ-matched men and women with autism (without intellectual disability), we operationalized camouflaging in adults with autism for the first time as the quantitative discrepancy between the person's 'external' behavioural presentation in social-interpersonal contexts (measured by the Autism Diagnostic Observation Schedule) and the person's 'internal' status (dispositional traits measured by the Autism Spectrum Quotient and social cognitive capability measured by the 'Reading the Mind in the Eyes' Test)...
November 29, 2016: Autism: the International Journal of Research and Practice
https://www.readbyqxmd.com/read/27899709/the-art-of-camouflage-gender-differences-in-the-social-behaviors-of-girls-and-boys-with-autism-spectrum-disorder
#4
Michelle Dean, Robin Harwood, Connie Kasari
This study examined the extent to which gender-related social behaviors help girls with autism spectrum disorder to seemingly mask their symptoms. Using concurrent mixed methods, we examined the social behaviors of 96 elementary school children during recess (autism spectrum disorder = 24 girls and 24 boys, typically developing = 24 girls and 24 boys). Children with autism spectrum disorder had average intelligence (IQ ⩾ 70), a confirmed diagnosis, and were educated in the general education classroom...
November 29, 2016: Autism: the International Journal of Research and Practice
https://www.readbyqxmd.com/read/27899708/sex-differences-in-the-reciprocal-behaviour-of-children-with-autism
#5
Tineke Backer van Ommeren, Hans M Koot, Anke M Scheeren, Sander Begeer
Differences in the social limitations of girls compared to boys on the autism spectrum are still poorly understood. Impaired social-emotional reciprocity is a core diagnostic criterion for an autism spectrum disorder. This study compares sex differences in reciprocal behaviour in children with autism spectrum disorder (32 girls, 114 boys) and in typically developing children (24 girls, 55 boys). While children with autism spectrum disorder showed clear limitations in reciprocal behaviour compared to typically developing children, sex differences were found only in the autism spectrum disorder group: girls with autism spectrum disorder had higher reciprocity scores than boys with autism spectrum disorder...
November 29, 2016: Autism: the International Journal of Research and Practice
https://www.readbyqxmd.com/read/27891820/investigating-diagnostic-bias-in-autism-spectrum-conditions-an-item-response-theory-analysis-of-sex-bias-in-the-aq-10
#6
Aja Louise Murray, Carrie Allison, Paula L Smith, Simon Baron-Cohen, Tom Booth, Bonnie Auyeung
Diagnostic bias is a concern in autism spectrum conditions (ASC) where prevalence and presentation differ by sex. To ensure that females with ASC are not under-identified, it is important that ASC screening tools do not systematically underestimate autistic traits in females relative to males. We evaluated whether the AQ-10, a brief screen for ASC recommended by the National Institute of Clinical Excellence in cases of suspected ASC, exhibits such a bias. Using an item response theory approach, we evaluated differential item functioning and differential test functioning...
November 28, 2016: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/27891212/the-role-of-sex-differential-biology-in-risk-for-autism-spectrum-disorder
#7
REVIEW
Donna M Werling
Autism spectrum disorder (ASD) is a developmental condition that affects approximately four times as many males as females, a strong sex bias that has not yet been fully explained. Understanding the causes of this biased prevalence may highlight novel avenues for treatment development that could benefit patients with diverse genetic backgrounds, and the expertise of sex differences researchers will be invaluable in this endeavor. In this review, I aim to assess current evidence pertaining to the sex difference in ASD prevalence and to identify outstanding questions and remaining gaps in our understanding of how males come to be more frequently affected and/or diagnosed with ASD...
2016: Biology of Sex Differences
https://www.readbyqxmd.com/read/27887681/bone-accrual-in-males-with-autism-spectrum-disorder
#8
Ann M Neumeyer, Natalia Cano Sokoloff, Erin McDonnell, Eric A Macklin, Christopher J McDougle, Madhusmita Misra
OBJECTIVE: To test the hypothesis that bone accrual over a 4-year period is reduced in boys with autism spectrum disorder (ASD) compared with typically developing controls. STUDY DESIGN: Twenty-five boys with ASD and 24 controls were assessed for bone outcomes. Fourteen boys with ASD and 11 controls were assessed both at baseline and after 4 years. The mean subject age was 11.0 ± 1.6 years at study initiation and 14.9 ± 1.6 years at follow-up. Bone mineral density (BMD) was measured at the spine, hip, and whole body using dual-energy X-ray absorptiometry and normalized for age, race, and sex (BMD z-scores)...
November 22, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27880953/deletion-of-top3b-is-associated-with-cognitive-impairment-and-facial-dysmorphism
#9
Carolyn S Kaufman, Ann Genovese, Merlin G Butler
Deletions of different regions of chromosome 22q11 have been extensively characterized in the literature, with a recent review outlining common deletions with a standardized system proposed for classification and nomenclature. The genotype-phenotype relationships have not been sufficiently elucidated for these deletions, and it remains unclear which specific genes play the dominant roles in producing associated clinical features. Several deletions involve entirely distinct regions of chromosome 22q11 but do not overlap, suggesting that a number of different genes contribute to the clinical features...
November 24, 2016: Cytogenetic and Genome Research
https://www.readbyqxmd.com/read/27880854/increased-paternal-age-at-conception-is-associated-with-transcriptomic-changes-involved-in-mitochondrial-function-in-elderly-individuals
#10
Tapio Nevalainen, Laura Kananen, Saara Marttila, Juulia Jylhävä, Marja Jylhä, Antti Hervonen, Mikko Hurme
The increased paternal age at conception (PAC) has been associated with autism spectrum disorder (ASD), schizophrenia and other neurodevelopmental disorders, thus raising questions that imply, potential health concerns in the offspring. As opposed to female oogonia, the male germ cells undergo hundreds of cell divisions during the fertile years. Thus, the advanced paternal age is associated with increase of point mutations in the male spermatogonia DNA, implying that this could be the major driving mechanism behind the paternal age effect observed in the offspring...
2016: PloS One
https://www.readbyqxmd.com/read/27878742/brief-report-diminished-gaze-preference-for-dynamic-social-interaction-scenes-in-youth-with-autism-spectrum-disorders
#11
Rebecca C Shaffer, Ernest V Pedapati, Frederick Shic, Kristina Gaietto, Katherine Bowers, Logan K Wink, Craig A Erickson
In this study, we present an eye-tracking paradigm, adapted from previous work with toddlers, for assessing social-interaction looking preferences in youth ages 5-17 with ASD and typically-developing controls (TDC). Videos of children playing together (Social Scenes, SS) were presented side-by-side with animated geometric shapes (GS). Participants with ASD demonstrated reduced SS preferences compared to TDC, results also represented continuously by associations between higher SS preferences and fewer social difficulties across the combined sample...
November 23, 2016: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/27874273/association-testing-of-vasopressin-receptor-1a-microsatellite-polymorphisms-in-non-clinical-autism-spectrum-phenotypes
#12
Tanya L Procyshyn, Peter L Hurd, Bernard J Crespi
Variation in the arginine vasopressin receptor 1a (AVPR1a) gene is associated with autism risk in clinical populations and with variation in social behavior in non-clinical populations. However, whether a relationship exists between AVPR1a polymorphisms and non-clinical manifestations of autism spectrum phenotypes has not been established. In this study, 873 Caucasian university students were administered the Autism-spectrum Quotient (AQ) questionnaire and genotyped for the RS1 and RS3 microsatellites. A significant association was found between RS3 microsatellite variation and AQ score, with the long/long RS3 genotype associated with higher AQ score...
November 22, 2016: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/27871978/differences-in-testosterone-and-its-precursors-by-sex-of-the-offspring-in-meconium
#13
Alexander J Frey, Bo Y Park, Emily R Schriver, Daniel R Feldman, Samuel Parry, Lisa A Croen, Daniele M Fallin, Irva Hertz-Picciotto, Craig J Newschaffer, Nathaniel W Snyder
Prenatal metabolism exerts profound effects on development. The first stool of the newborn, meconium, provides a window into the prenatal metabolic environment. The objective of this study was to examine the feasibility of meconium as a novel matrix to quantify prenatal steroid levels. We quantified parameters of analytical interest regarding the use of meconium, including sample stability. We hypothesized that meconium steroid content would differ by sex, prompting analysis of meconium to test effects of prenatal steroid metabolism...
November 18, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27870441/sexual-divergence-in-activity-dependent-neuroprotective-protein-impacting-autism-schizophrenia-and-alzheimer-s-disease
#14
REVIEW
Illana Gozes
Discovered in our laboratory, activity-dependent neuroprotective protein (ADNP) interacts with key regulatory proteins, including the chromatin remodeling complex SWI/SNF, proteins associated with RNA splicing, RNA translation, microtubule dynamics, and autophagy. ADNP regulates > 400 genes during mouse embryonic development and is essential for neural tube closure. ADNP key functions extend from mice to men, with mutations causing ADNP-related ID/autism syndrome, also known as the Helsmoortel-Van der Aa syndrome...
January 2, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27870420/imaging-sex-gender-and-autism-in-the-brain-etiological-implications
#15
REVIEW
Meng-Chuan Lai, Jason P Lerch, Dorothea L Floris, Amber N V Ruigrok, Alexa Pohl, Michael V Lombardo, Simon Baron-Cohen
The male preponderance in autism prevalence has brought together the disparate topics of sex/gender and autism research. Two directions of neuroimaging studies on the relationships between sex/gender and autism may inform male-specific risk mechanisms and female-specific protective mechanisms of autism. First, we review how sex/gender moderates autism-related brain changes and how this informs general models of autism etiology. Better-powered human neuroimaging studies suggest that the brain characteristics of autism are qualitatively, rather than simply quantitatively, different between males and females...
January 2, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27846226/pleiotropic-mechanisms-indicated-for-sex-differences-in-autism
#16
Ileena Mitra, Kathryn Tsang, Christine Ladd-Acosta, Lisa A Croen, Kimberly A Aldinger, Robert L Hendren, Michela Traglia, Alinoë Lavillaureix, Noah Zaitlen, Michael C Oldham, Pat Levitt, Stanley Nelson, David G Amaral, Irva Herz-Picciotto, M Daniele Fallin, Lauren A Weiss
Sexual dimorphism in common disease is pervasive, including a dramatic male preponderance in autism spectrum disorders (ASDs). Potential genetic explanations include a liability threshold model requiring increased polymorphism risk in females, sex-limited X-chromosome contribution, gene-environment interaction driven by differences in hormonal milieu, risk influenced by genes sex-differentially expressed in early brain development, or contribution from general mechanisms of sexual dimorphism shared with secondary sex characteristics...
November 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27844248/the-prevalence-and-correlates-of-involvement-in-the-criminal-justice-system-among-youth-on-the-autism-spectrum
#17
Julianna Rava, Paul Shattuck, Jessica Rast, Anne Roux
This study examined the prevalence and correlates of involvement in the criminal justice system among a nationally representative sample of youth with autism. We examined whether youth had been stopped and questioned by police or arrested at 14-15 years old and 21-22 years old. By age 21, approximately 20% of youth with autism had been stopped and questioned by police and nearly 5% had been arrested. Female youth were less likely to be involved in the criminal justice system, whereas youth displaying externalizing behaviors were more likely to be involved in the criminal justice system...
November 14, 2016: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/27844247/a-profile-on-emergency-department-utilization-in-adolescents-and-young-adults-with-autism-spectrum-disorders
#18
Guodong Liu, Amanda M Pearl, Lan Kong, Douglas L Leslie, Michael J Murray
There has been an increase in utilization of the Emergency Department (ED) in individuals with autism spectrum disorder (ASD) which may reflect a deficit of services (Green et al., Journal of the American Academy of Child and Adolescent Psychiatry 40(3):325-332, 2001; Gurney et al., Archives of Pediatric and Adolescent Medicine 160:825-830, 2006; Leichtman et al., American Journal of Orthopsyhciatry 72(2):227-235, 2001). The current study examined the rates of ED utilization between 2005 and 2013 in ASD youth 12- to 21-years-old...
November 14, 2016: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/27843150/the-bacterial-peptidoglycan-sensing-molecule-pglyrp2-modulates-brain-development-and-behavior
#19
T Arentsen, Y Qian, S Gkotzis, T Femenia, T Wang, K Udekwu, H Forssberg, R Diaz Heijtz
Recent studies have revealed that the gut microbiota modulates brain development and behavior, but the underlying mechanisms are still poorly understood. Here, we show that bacterial peptidoglycan (PGN) derived from the commensal gut microbiota can be translocated into the brain and sensed by specific pattern-recognition receptors (PRRs) of the innate immune system. Using expression-profiling techniques, we demonstrate that two families of PRRs that specifically detect PGN (that is, PGN-recognition proteins and NOD-like receptors), and the PGN transporter PepT1 are highly expressed in the developing brain during specific windows of postnatal development in both males and females...
November 15, 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/27837331/acute-oxytocin-improves-memory-and-gaze-following-in-male-but-not-female-nursery-reared-infant-macaques
#20
Elizabeth A Simpson, Annika Paukner, Valentina Sclafani, Stefano S K Kaburu, Stephen J Suomi, Pier F Ferrari
RATIONALE: Exogenous oxytocin administration is widely reported to improve social cognition in human and nonhuman primate adults. Risk factors of impaired social cognition, however, emerge in infancy. Early interventions-when plasticity is greatest-are critical to reverse negative outcomes. OBJECTIVE: We tested the hypothesis that oxytocin may exert similar positive effects on infant social cognition, as in adults. To test this idea, we assessed the effectiveness of acute, aerosolized oxytocin on two foundational social cognitive skills: working memory (i...
November 11, 2016: Psychopharmacology
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