Atypical Laterality of Resting Gamma Oscillations in Autism Spectrum Disorders / Christina R. MAXWELL in Journal of Autism and Developmental Disorders, 45-2 (February 2015)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 45-2 (February 2015) . - p.292-297 Titre : Atypical Laterality of Resting Gamma Oscillations in Autism Spectrum Disorders Type de document : texte imprimé Auteurs : Christina R. MAXWELL, Auteur ; Michele E. VILLALOBOS, Auteur ; Robert T. SCHULTZ, Auteur ; Beate HERPERTZ-DAHLMANN, Auteur ; Kerstin KONRAD, Auteur ; Gregor KOHLS, Auteur Article en page(s) : p.292-297 Langues : Anglais (eng) Mots-clés : Autism  Gamma  EEG  SRS  Resting state  Laterality Index. décimale : PER Périodiques Résumé : Abnormal brain oscillatory activity has been found in autism spectrum disorders (ASD) and proposed as a potential biomarker. While several studies have investigated gamma oscillations in ASD, none have examined resting gamma power across multiple brain regions. This study investigated resting gamma power using EEG in 15 boys with ASD and 18 age and intelligence quotient matched typically developing controls. We found a decrease in resting gamma power at right lateral electrodes in ASD. We further explored associations between gamma and ASD severity as measured by the Social Responsiveness Scale (SRS) and found a negative correlation between SRS and gamma power. We believe that our findings give further support of gamma oscillations as a potential biomarker for ASD. En ligne : http://dx.doi.org/10.1007/s10803-013-1842-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=258 [article] Atypical Laterality of Resting Gamma Oscillations in Autism Spectrum Disorders [texte imprimé] / Christina R. MAXWELL, Auteur ; Michele E. VILLALOBOS, Auteur ; Robert T. SCHULTZ, Auteur ; Beate HERPERTZ-DAHLMANN, Auteur ; Kerstin KONRAD, Auteur ; Gregor KOHLS, Auteur . - p.292-297. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 45-2 (February 2015) . - p.292-297 Mots-clés : Autism  Gamma  EEG  SRS  Resting state  Laterality Index. décimale : PER Périodiques Résumé : Abnormal brain oscillatory activity has been found in autism spectrum disorders (ASD) and proposed as a potential biomarker. While several studies have investigated gamma oscillations in ASD, none have examined resting gamma power across multiple brain regions. This study investigated resting gamma power using EEG in 15 boys with ASD and 18 age and intelligence quotient matched typically developing controls. We found a decrease in resting gamma power at right lateral electrodes in ASD. We further explored associations between gamma and ASD severity as measured by the Social Responsiveness Scale (SRS) and found a negative correlation between SRS and gamma power. We believe that our findings give further support of gamma oscillations as a potential biomarker for ASD. En ligne : http://dx.doi.org/10.1007/s10803-013-1842-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=258

Autism Spectrum Disorder Identification, Diagnosis, and Navigation of Services: Learning From the Voices of Caregivers / Elizabeth R. CRAIS in Focus on Autism and Other Developmental Disabilities, 35-4 (December 2020)  

Public ISBD [article]  inFocus on Autism and Other Developmental Disabilities > 35-4 (December 2020) . - p.246-256 Titre : Autism Spectrum Disorder Identification, Diagnosis, and Navigation of Services: Learning From the Voices of Caregivers Type de document : texte imprimé Auteurs : Elizabeth R. CRAIS, Auteur ; Cara S. MCCOMISH, Auteur ; Emily F. KERTCHER, Auteur ; Steve HOOPER, Auteur ; Rebecca EDMONDSON PRETZEL, Auteur ; Lucia MENDEZ, Auteur ; Michelle VILLALOBOS, Auteur Article en page(s) : p.246-256 Langues : Anglais (eng) Mots-clés : ASD  caregiver perspectives  screening  diagnosis  access  service systems Index. décimale : PER Périodiques Résumé : This study explored caregivers’ perspectives on facilitators and barriers to screening, diagnosis, and identifying and accessing other services for young children with autism spectrum disorder (ASD); and caregivers’ suggestions for improving the process. Eight focus groups with 55 caregivers were conducted. Four groups had a mix of White, African American, and Asian caregivers, and to gain broader populations, we recruited two groups of Spanish-speaking and two groups of American Indian caregivers. Some caregivers reported that their child and they received excellent services; however, the majority reported concerns about the services they and their child received. The findings also indicated a lower age of diagnosis and a smaller gap between concerns and diagnosis for White non-Hispanic children compared with Hispanic non-White children. Caregivers had many suggestions for ways to improve the process. En ligne : http://dx.doi.org/10.1177/1088357620922165 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=434 [article] Autism Spectrum Disorder Identification, Diagnosis, and Navigation of Services: Learning From the Voices of Caregivers [texte imprimé] / Elizabeth R. CRAIS, Auteur ; Cara S. MCCOMISH, Auteur ; Emily F. KERTCHER, Auteur ; Steve HOOPER, Auteur ; Rebecca EDMONDSON PRETZEL, Auteur ; Lucia MENDEZ, Auteur ; Michelle VILLALOBOS, Auteur . - p.246-256. Langues : Anglais (eng) in Focus on Autism and Other Developmental Disabilities > 35-4 (December 2020) . - p.246-256 Mots-clés : ASD  caregiver perspectives  screening  diagnosis  access  service systems Index. décimale : PER Périodiques Résumé : This study explored caregivers’ perspectives on facilitators and barriers to screening, diagnosis, and identifying and accessing other services for young children with autism spectrum disorder (ASD); and caregivers’ suggestions for improving the process. Eight focus groups with 55 caregivers were conducted. Four groups had a mix of White, African American, and Asian caregivers, and to gain broader populations, we recruited two groups of Spanish-speaking and two groups of American Indian caregivers. Some caregivers reported that their child and they received excellent services; however, the majority reported concerns about the services they and their child received. The findings also indicated a lower age of diagnosis and a smaller gap between concerns and diagnosis for White non-Hispanic children compared with Hispanic non-White children. Caregivers had many suggestions for ways to improve the process. En ligne : http://dx.doi.org/10.1177/1088357620922165 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=434

A culturally grounded autism parent training program with Black parents / Kim KAISER in Autism, 26-3 (April 2022)  

Public ISBD [article]  inAutism > 26-3 (April 2022) . - p.716-726 Titre : A culturally grounded autism parent training program with Black parents Type de document : texte imprimé Auteurs : Kim KAISER, Auteur ; Michele E. VILLALOBOS, Auteur ; Jill LOCKE, Auteur ; Iheoma U. IRUKA, Auteur ; Camille PROCTOR, Auteur ; Brian A. BOYD, Auteur Article en page(s) : p.716-726 Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorder/therapy  Autistic Disorder/therapy  Child  Family  Humans  Parents  Black families  autism spectrum disorders  disparities  family functioning and support  health services  implementation science  interventions?psychosocial/behavioral  parent advocacy  parent training  qualitative research Index. décimale : PER Périodiques Résumé : Parent training programs have been well-studied in Autism Spectrum Disorders and shown to increase a parent's feeling of empowerment, advocacy skills, and treatment enrollment for their child. The majority of parent training interventions have been developed without considering the unique needs of under-represented communities, such as the Black community. Black children with autism are not only misdiagnosed or not diagnosed at all, but are not accessing services equally compared to their White peers. There is an urgent need for culturally adapted interventions in order to decrease the disparity gap. The Color of Autism Foundation developed and ran a parent training program for Black parents of children with autism. The program was grounded in two key features: (1) creating a circle of support for parents to connect and heal from ongoing and historical racial trauma and (2) using parents of Black children with autism as the main facilitators. We believe this increased parent's ability to engage in the educational aspects of the training. Overall, parents reported high levels of satisfaction with the training were highly engaged (attended an average of five of six sessions) and reported high levels of empowerment. Parents also reported continued mistrust in the medical and research community and a need for more Black providers. Further work should examine the relationship of the parent and provider in autism treatment and study the impact of circles of healing for Black families. En ligne : https://dx.doi.org/10.1177/13623613211073373 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=473 [article] A culturally grounded autism parent training program with Black parents [texte imprimé] / Kim KAISER, Auteur ; Michele E. VILLALOBOS, Auteur ; Jill LOCKE, Auteur ; Iheoma U. IRUKA, Auteur ; Camille PROCTOR, Auteur ; Brian A. BOYD, Auteur . - p.716-726. Langues : Anglais (eng) in Autism > 26-3 (April 2022) . - p.716-726 Mots-clés : Autism Spectrum Disorder/therapy  Autistic Disorder/therapy  Child  Family  Humans  Parents  Black families  autism spectrum disorders  disparities  family functioning and support  health services  implementation science  interventions?psychosocial/behavioral  parent advocacy  parent training  qualitative research Index. décimale : PER Périodiques Résumé : Parent training programs have been well-studied in Autism Spectrum Disorders and shown to increase a parent's feeling of empowerment, advocacy skills, and treatment enrollment for their child. The majority of parent training interventions have been developed without considering the unique needs of under-represented communities, such as the Black community. Black children with autism are not only misdiagnosed or not diagnosed at all, but are not accessing services equally compared to their White peers. There is an urgent need for culturally adapted interventions in order to decrease the disparity gap. The Color of Autism Foundation developed and ran a parent training program for Black parents of children with autism. The program was grounded in two key features: (1) creating a circle of support for parents to connect and heal from ongoing and historical racial trauma and (2) using parents of Black children with autism as the main facilitators. We believe this increased parent's ability to engage in the educational aspects of the training. Overall, parents reported high levels of satisfaction with the training were highly engaged (attended an average of five of six sessions) and reported high levels of empowerment. Parents also reported continued mistrust in the medical and research community and a need for more Black providers. Further work should examine the relationship of the parent and provider in autism treatment and study the impact of circles of healing for Black families. En ligne : https://dx.doi.org/10.1177/13623613211073373 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=473

Genome-wide linkage analyses of two repetitive behavior phenotypes in Utah pedigrees with autism spectrum disorders / Dale CANNON in Molecular Autism, (February 2010)  

Public ISBD [article]  inMolecular Autism > (February 2010) . - 13 p. Titre : Genome-wide linkage analyses of two repetitive behavior phenotypes in Utah pedigrees with autism spectrum disorders Type de document : texte imprimé Auteurs : Dale CANNON, Auteur ; William M. MCMAHON, Auteur ; Hilary H. COON, Auteur ; Kristina ALLEN-BRADY, Auteur ; Reid ROBISON, Auteur ; Judith S. MILLER, Auteur ; Michele E. VILLALOBOS, Auteur ; Natalie K. WAHMHOFF, Auteur Année de publication : 2010 Article en page(s) : 13 p. Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Background It has been suggested that efforts to identify genetic risk markers of autism spectrum disorder (ASD) would benefit from the analysis of more narrowly defined ASD phenotypes. Previous research indicates that 'insistence on sameness' (IS) and 'repetitive sensory-motor actions' (RSMA) are two factors within the ASD 'repetitive and stereotyped behavior' domain. The primary aim of this study was to identify genetic risk markers of both factors to allow comparison of those markers with one another and with markers found in the same set of pedigrees using ASD diagnosis as the phenotype. Thus, we empirically addresses the possibilities that more narrowly defined phenotypes improve linkage analysis signals and that different narrowly defined phenotypes are associated with different loci. Secondary aims were to examine the correlates of IS and RSMA and to assess the heritability of both scales. Methods A genome-wide linkage analysis was conducted with a sample of 70 multiplex ASD pedigrees using IS and RSMA as phenotypes. Genotyping services were provided by the Center for Inherited Disease Research using the 6 K single nucleotide polymorphism linkage panel. Analysis was done using the multipoint linkage software program MCLINK, a Markov chain Monte Carlo (MCMC) method that allows for multilocus linkage analysis on large extended pedigrees. Results Genome-wide significance was observed for IS at 2q37.1-q37.3 (dominant model heterogeneity lod score (hlod) 3.42) and for RSMA at 15q13.1-q14 (recessive model hlod 3.93). We found some linkage signals that overlapped and others that were not observed in our previous linkage analysis of the ASD phenotype in the same pedigrees, and regions varied in the range of phenotypes with which they were linked. A new finding with respect to IS was that it is positively associated with IQ if the IS-RSMA correlation is statistically controlled. Conclusions The finding that IS and RSMA are linked to different regions that only partially overlap regions previously identified with ASD as the phenotype supports the value of including multiple, narrowly defined phenotypes in ASD genetic research. Further, we replicated previous reports indicating that RSMA is more strongly associated than IS with measures of ASD severity. En ligne : http://dx.doi.org/10.1186/2040-2392-1-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=102 [article] Genome-wide linkage analyses of two repetitive behavior phenotypes in Utah pedigrees with autism spectrum disorders [texte imprimé] / Dale CANNON, Auteur ; William M. MCMAHON, Auteur ; Hilary H. COON, Auteur ; Kristina ALLEN-BRADY, Auteur ; Reid ROBISON, Auteur ; Judith S. MILLER, Auteur ; Michele E. VILLALOBOS, Auteur ; Natalie K. WAHMHOFF, Auteur . - 2010 . - 13 p. Langues : Anglais (eng) in Molecular Autism > (February 2010) . - 13 p. Index. décimale : PER Périodiques Résumé : Background It has been suggested that efforts to identify genetic risk markers of autism spectrum disorder (ASD) would benefit from the analysis of more narrowly defined ASD phenotypes. Previous research indicates that 'insistence on sameness' (IS) and 'repetitive sensory-motor actions' (RSMA) are two factors within the ASD 'repetitive and stereotyped behavior' domain. The primary aim of this study was to identify genetic risk markers of both factors to allow comparison of those markers with one another and with markers found in the same set of pedigrees using ASD diagnosis as the phenotype. Thus, we empirically addresses the possibilities that more narrowly defined phenotypes improve linkage analysis signals and that different narrowly defined phenotypes are associated with different loci. Secondary aims were to examine the correlates of IS and RSMA and to assess the heritability of both scales. Methods A genome-wide linkage analysis was conducted with a sample of 70 multiplex ASD pedigrees using IS and RSMA as phenotypes. Genotyping services were provided by the Center for Inherited Disease Research using the 6 K single nucleotide polymorphism linkage panel. Analysis was done using the multipoint linkage software program MCLINK, a Markov chain Monte Carlo (MCMC) method that allows for multilocus linkage analysis on large extended pedigrees. Results Genome-wide significance was observed for IS at 2q37.1-q37.3 (dominant model heterogeneity lod score (hlod) 3.42) and for RSMA at 15q13.1-q14 (recessive model hlod 3.93). We found some linkage signals that overlapped and others that were not observed in our previous linkage analysis of the ASD phenotype in the same pedigrees, and regions varied in the range of phenotypes with which they were linked. A new finding with respect to IS was that it is positively associated with IQ if the IS-RSMA correlation is statistically controlled. Conclusions The finding that IS and RSMA are linked to different regions that only partially overlap regions previously identified with ASD as the phenotype supports the value of including multiple, narrowly defined phenotypes in ASD genetic research. Further, we replicated previous reports indicating that RSMA is more strongly associated than IS with measures of ASD severity. En ligne : http://dx.doi.org/10.1186/2040-2392-1-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=102

Genome-wide linkage using the Social Responsiveness Scale in Utah autism pedigrees / Hilary H. COON in Molecular Autism, (April 2010)  

Public ISBD [article]  inMolecular Autism > (April 2010) . - 14 p. Titre : Genome-wide linkage using the Social Responsiveness Scale in Utah autism pedigrees Type de document : texte imprimé Auteurs : Hilary H. COON, Auteur ; William M. MCMAHON, Auteur ; Kristina ALLEN-BRADY, Auteur ; Dale CANNON, Auteur ; Reid ROBISON, Auteur ; Judith S. MILLER, Auteur ; Michele E. VILLALOBOS, Auteur ; Nicola J. CAMP, Auteur Année de publication : 2010 Article en page(s) : 14 p. Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Background Autism Spectrum Disorders (ASD) are phenotypically heterogeneous, characterized by impairments in the development of communication and social behaviour and the presence of repetitive behaviour and restricted interests. Dissecting the genetic complexity of ASD may require phenotypic data reflecting more detail than is offered by a categorical clinical diagnosis. Such data are available from the Social Responsiveness Scale (SRS) which is a continuous, quantitative measure of social ability giving scores that range from significant impairment to above average ability. Methods We present genome-wide results for 64 multiplex and extended families ranging from two to nine generations. SRS scores were available from 518 genotyped pedigree subjects, including affected and unaffected relatives. Genotypes from the Illumina 6 k single nucleotide polymorphism panel were provided by the Center for Inherited Disease Research. Quantitative and qualitative analyses were done using MCLINK, a software package that uses Markov chain Monte Carlo (MCMC) methods to perform multilocus linkage analysis on large extended pedigrees. Results When analysed as a qualitative trait, linkage occurred in the same locations as in our previous affected-only genome scan of these families, with findings on chromosomes 7q31.1-q32.3 [heterogeneity logarithm of the odds (HLOD) = 2.91], 15q13.3 (HLOD = 3.64), and 13q12.3 (HLOD = 2.23). Additional positive qualitative results were seen on chromosomes 6 and 10 in regions that may be of interest for other neuropsychiatric disorders. When analysed as a quantitative trait, results replicated a peak found in an independent sample using quantitative SRS scores on chromosome 11p15.1-p15.4 (HLOD = 2.77). Additional positive quantitative results were seen on chromosomes 7, 9, and 19. Conclusions The SRS linkage peaks reported here substantially overlap with peaks found in our previous affected-only genome scan of clinical diagnosis. In addition, we replicated a previous SRS peak in an independent sample. These results suggest the SRS is a robust and useful phenotype measure for genetic linkage studies of ASD. Finally, analyses of SRS scores revealed linkage peaks overlapping with evidence from other studies of neuropsychiatric diseases. The information available from the SRS itself may, therefore, reveal locations for autism susceptibility genes that would not otherwise be detected. En ligne : http://dx.doi.org/10.1186/2040-2392-1-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=102 [article] Genome-wide linkage using the Social Responsiveness Scale in Utah autism pedigrees [texte imprimé] / Hilary H. COON, Auteur ; William M. MCMAHON, Auteur ; Kristina ALLEN-BRADY, Auteur ; Dale CANNON, Auteur ; Reid ROBISON, Auteur ; Judith S. MILLER, Auteur ; Michele E. VILLALOBOS, Auteur ; Nicola J. CAMP, Auteur . - 2010 . - 14 p. Langues : Anglais (eng) in Molecular Autism > (April 2010) . - 14 p. Index. décimale : PER Périodiques Résumé : Background Autism Spectrum Disorders (ASD) are phenotypically heterogeneous, characterized by impairments in the development of communication and social behaviour and the presence of repetitive behaviour and restricted interests. Dissecting the genetic complexity of ASD may require phenotypic data reflecting more detail than is offered by a categorical clinical diagnosis. Such data are available from the Social Responsiveness Scale (SRS) which is a continuous, quantitative measure of social ability giving scores that range from significant impairment to above average ability. Methods We present genome-wide results for 64 multiplex and extended families ranging from two to nine generations. SRS scores were available from 518 genotyped pedigree subjects, including affected and unaffected relatives. Genotypes from the Illumina 6 k single nucleotide polymorphism panel were provided by the Center for Inherited Disease Research. Quantitative and qualitative analyses were done using MCLINK, a software package that uses Markov chain Monte Carlo (MCMC) methods to perform multilocus linkage analysis on large extended pedigrees. Results When analysed as a qualitative trait, linkage occurred in the same locations as in our previous affected-only genome scan of these families, with findings on chromosomes 7q31.1-q32.3 [heterogeneity logarithm of the odds (HLOD) = 2.91], 15q13.3 (HLOD = 3.64), and 13q12.3 (HLOD = 2.23). Additional positive qualitative results were seen on chromosomes 6 and 10 in regions that may be of interest for other neuropsychiatric disorders. When analysed as a quantitative trait, results replicated a peak found in an independent sample using quantitative SRS scores on chromosome 11p15.1-p15.4 (HLOD = 2.77). Additional positive quantitative results were seen on chromosomes 7, 9, and 19. Conclusions The SRS linkage peaks reported here substantially overlap with peaks found in our previous affected-only genome scan of clinical diagnosis. In addition, we replicated a previous SRS peak in an independent sample. These results suggest the SRS is a robust and useful phenotype measure for genetic linkage studies of ASD. Finally, analyses of SRS scores revealed linkage peaks overlapping with evidence from other studies of neuropsychiatric diseases. The information available from the SRS itself may, therefore, reveal locations for autism susceptibility genes that would not otherwise be detected. En ligne : http://dx.doi.org/10.1186/2040-2392-1-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=102

Sex differences in age of diagnosis of autism spectrum disorder: Preliminary evidence from Uganda / Emmanuel BONNEY in Autism Research, 15-1 (January 2022)  

Permalink

---

1 (1 - 6 / 6) Par page : 25 50 100 200