Pubmed du 02/10/14

Pubmed du jour

2014-10-02 12:03:50

1. Holzman DC. {{Pesticides and Autism Spectrum Disorders: New Findings from the CHARGE Study}}. {Environ Health Perspect};2014 (Oct 1);122(10):A280.

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2. Iwanami A, Okajima Y, Ota H, Tani M, Yamada T, Yamagata B, Hashimoto R, Kanai C, Takashio O, Inamoto A, Ono T, Takayama Y, Kato N. {{P300 component of event-related potentials in persons with asperger disorder}}. {J Clin Neurophysiol};2014 (Oct);31(5):493-499.

SUMMARY: In the present study, we investigated auditory event-related potentials in adults with Asperger disorder and normal controls using an auditory oddball task and a novelty oddball task. Task performance and the latencies of P300 evoked by both target and novel stimuli in the two tasks did not differ between the two groups. Analysis of variance revealed that there was a significant interaction effect between group and electrode site on the mean amplitude of the P300 evoked by novel stimuli, which indicated that there was an altered distribution of the P300 in persons with Asperger disorder. In contrast, there was no significant interaction effect on the mean P300 amplitude elicited by target stimuli. Considering that P300 comprises two main subcomponents, frontal-central-dominant P3a and parietal-dominant P3b, our results suggested that persons with Asperger disorder have enhanced amplitude of P3a, which indicated activated prefrontal function in this task.

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3. Levin DS, Volkert VM, Piazza CC. {{A Multi-Component Treatment to Reduce Packing in Children With Feeding and Autism Spectrum Disorders}}. {Behav Modif};2014 (Sep 29)
Despite the high prevalence and potential negative consequences of feeding disorders in children with autism spectrum disorder (ASD), there are surprisingly few studies that examine the efficacy of treatment exclusively with these children. Children with feeding disorders also frequently exhibit packing (holding or pocketing food without swallowing). Investigators have evaluated procedures in the general pediatric population to treat packing, and some have shown that procedures need to be combined to form an effective treatment. Although investigators have evaluated the efficacy of re-distribution, swallow facilitation, and a chaser, these procedures have not been evaluated specifically with children with ASD. Prior to the current investigation, we successfully used nonremoval procedures to increase acceptance of pureed foods and liquids and decrease the inappropriate mealtime behavior of two children diagnosed with ASD and feeding problems; however, in each case, packing emerged during initial treatment. We then used different combinations of re-distribution, swallow facilitation, and chaser treatments to decrease packing for both children.

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4. Minihan PM, Morgan JP, Park A, Yantsides KE, Nobles CJ, Finkelman MD, Stark PC, Must A. {{At-home oral care for adults with developmental disabilities: A survey of caregivers}}. {J Am Dent Assoc};2014 (Oct);145(10):1018-1025.

BACKGROUND: Little is known about effective at-home oral care methods for people with developmental disabilities (DDs) who are unable to perform personal preventive practices themselves and rely on caregivers for assistance. METHODS: A convenience sample of 808 caregivers (84.5 percent paid, 15.5 percent family members) who accompanied adults with DDs (20 years or older) to appointments at a specialized statewide dental care system completed computer-assisted personal interview surveys. The authors used these data to investigate caregivers’ at-home oral care experiences and to explore differences between caregivers who were paid and those who were family members. RESULTS: Caregivers reported that a high proportion (85 percent) of dentate adults with DDs received assistance with tooth cleaning. They also reported a high prevalence of dental problems, and low adherence to brushing (79 percent) and flossing (22 percent) recommendations. More caregivers reported that they felt confident assisting with brushing than with flossing (85 percent versus 54 percent). Family members and paid caregivers differed with respect to confidence and training. CONCLUSIONS: At-home oral care, particularly flossing, presents substantial challenges for adults with DDs. Solutions must be tailored to address the different experiences and distinct needs of the family members and paid caregivers who assist these adults. PRACTICAL IMPLICATIONS: Caregivers play an important role in providing at-home oral care, and they must be included in efforts to improve oral health outcomes for people with DDs.

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5. Mullegama SV, Pugliesi L, Burns B, Shah Z, Tahir R, Gu Y, Nelson DL, Elsea SH. {{MBD5 haploinsufficiency is associated with sleep disturbance and disrupts circadian pathways common to Smith-Magenis and fragile X syndromes}}. {Eur J Hum Genet};2014 (Oct 1)
Individuals with autism spectrum disorders (ASD) who have an identifiable single-gene neurodevelopmental disorder (NDD), such as fragile X syndrome (FXS, FMR1), Smith-Magenis syndrome (SMS, RAI1), or 2q23.1 deletion syndrome (del 2q23.1, MBD5) share phenotypic features, including a high prevalence of sleep disturbance. We describe the circadian deficits in del 2q23.1 through caregiver surveys in which we identify several frequent sleep anomalies, including night/early awakenings, coughing/snoring loudly, and difficulty falling asleep. We couple these findings with studies on the molecular analysis of the circadian deficits associated with haploinsufficiency of MBD5 in which circadian gene mRNA levels of NR1D2, PER1, PER2, and PER3 were altered in del 2q23.1 lymphoblastoid cell lines (LCLs), signifying that haploinsufficiency of MBD5 can result in dysregulation of circadian rhythm gene expression. These findings were further supported by expression microarrays of MBD5 siRNA knockdown cells that showed significantly altered expression of additional circadian rhythm signaling pathway genes. Based on the common sleep phenotypes observed in del 2q23.1, SMS, and FXS patients, we explored the possibility that MBD5, RAI1, and FMR1 function in overlapping circadian rhythm pathways. Bioinformatic analysis identified conserved putative E boxes in MBD5 and RAI1, and expression levels of NR1D2 and CRY2 were significantly reduced in patient LCLs. Circadian and mTOR signaling pathways, both associated with sleep disturbance, were altered in both MBD5 and RAI1 knockdown microarray data, overlapping with findings associated with FMR1. These data support phenotypic and molecular overlaps across these syndromes that may be exploited to provide therapeutic intervention for multiple disorders.European Journal of Human Genetics advance online publication, 1 October 2014; doi:10.1038/ejhg.2014.200.

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6. Rockman R. {{Prof. Fred Volkmar and Ben Popple: Yale Seminar on Autism: Autism and Dentistry : Yale Child Study Center, 2014, Itunes U}}. {J Autism Dev Disord};2014 (Oct 1)

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7. Rudra A, Banerjee S, Singhal N, Barua M, Mukerji S, Chakrabarti B. {{Translation and Usability of Autism Screening and Diagnostic Tools for Autism Spectrum Conditions in India}}. {Autism Res};2014 (Oct 2)
There is a critical need for screening and diagnostic tools (SDT) for autism spectrum conditions (ASC) in regional languages in South Asia. To address this, we translated four widely used SDT (Social Communication Disorder Checklist, Autism Spectrum Quotient, Social Communication Questionnaire, and Autism Diagnostic Observation Schedule) into Bengali and Hindi, two main regional languages ( approximately 360 million speakers), and tested their usability in children with and without ASC. We found a significant difference in scores between children with ASC (n = 45 in Bengali, n = 40 in Hindi) and typically developing children (n = 43 in Bengali, n = 42 in Hindi) on all SDTs. These results demonstrate that these SDTs are usable in South Asia, and constitute an important resource for epidemiology research and clinical diagnosis in the region. Autism Res 2014, : -. (c) 2014 International Society for Autism Research, Wiley Periodicals, Inc.

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8. Watkins L, O’Reilly M, Kuhn M, Gevarter C, Lancioni GE, Sigafoos J, Lang R. {{A Review of Peer-Mediated Social Interaction Interventions for Students with Autism in Inclusive Settings}}. {J Autism Dev Disord};2014 (Oct 2)
This review addresses the use of peer-mediated interventions (PMI) to improve the social interaction skills of students with autism spectrum disorder (ASD) in inclusive settings. The purpose of this review is to (a) identify the characteristics and components of peer-mediated social interaction interventions, (b) evaluate the effectiveness of PMI by offering an analysis of intervention results and research design, and (c) suggest directions for future research. Overall, results suggest that PMI is a promising treatment for increasing social interaction in children, adolescents, and young adults with ASD in inclusive settings, with positive generalization, maintenance, and social validity outcomes. Findings also suggest that participant characteristics and the type of social deficit an individual exhibits are important considerations when choosing the optimal configuration of PMI strategies.

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