27 recherche sur le mot-clé 'MECP2'

Assessment of Caregiver Inventory for Rett Syndrome / Jane B. LANE in Journal of Autism and Developmental Disorders, 47-4 (April 2017)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 47-4 (April 2017) . - p.1102-1112 Titre : Assessment of Caregiver Inventory for Rett Syndrome Type de document : texte imprimé Auteurs : Jane B. LANE, Auteur ; Amber R. SALTER, Auteur ; Nancy JONES, Auteur ; Gary CUTTER, Auteur ; Joseph P. HORRIGAN, Auteur ; Steve A. SKINNER, Auteur ; Walter E. KAUFMANN, Auteur ; Daniel G. GLAZE, Auteur ; Jeffrey L. NEUL, Auteur ; Alan K. PERCY, Auteur Article en page(s) : p.1102-1112 Langues : Anglais (eng) Mots-clés : Rett syndrome  Caregiver  Inventory  MECP2  Factor analysis Index. décimale : PER Périodiques Résumé : Rett syndrome (RTT) requires total caregiver attention and leads to potential difficulties throughout life. The Caregiver Burden Inventory, designed for Alzheimer disease, was modified to a RTT Caregiver Inventory Assessment (RTT CIA). Reliability and face, construct, and concurrent validity were assessed in caregivers of individuals with RTT. Chi square or Fisher’s exact test for categorical variables and t tests or Wilcoxon two-sample tests for continuous variables were utilized. Survey completed by 198 caregivers; 70 caregivers completed follow-up assessment. Exploratory factor analysis revealed good agreement for physical burden, emotional burden, and social burden. Internal reliability was high (Cronbach’s alpha 0.898). RTT CIA represents a reliable and valid measure, providing a needed metric of caregiver burden in this disorder. En ligne : http://dx.doi.org/10.1007/s10803-017-3034-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=304 [article] Assessment of Caregiver Inventory for Rett Syndrome [texte imprimé] / Jane B. LANE, Auteur ; Amber R. SALTER, Auteur ; Nancy JONES, Auteur ; Gary CUTTER, Auteur ; Joseph P. HORRIGAN, Auteur ; Steve A. SKINNER, Auteur ; Walter E. KAUFMANN, Auteur ; Daniel G. GLAZE, Auteur ; Jeffrey L. NEUL, Auteur ; Alan K. PERCY, Auteur . - p.1102-1112. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 47-4 (April 2017) . - p.1102-1112 Mots-clés : Rett syndrome  Caregiver  Inventory  MECP2  Factor analysis Index. décimale : PER Périodiques Résumé : Rett syndrome (RTT) requires total caregiver attention and leads to potential difficulties throughout life. The Caregiver Burden Inventory, designed for Alzheimer disease, was modified to a RTT Caregiver Inventory Assessment (RTT CIA). Reliability and face, construct, and concurrent validity were assessed in caregivers of individuals with RTT. Chi square or Fisher’s exact test for categorical variables and t tests or Wilcoxon two-sample tests for continuous variables were utilized. Survey completed by 198 caregivers; 70 caregivers completed follow-up assessment. Exploratory factor analysis revealed good agreement for physical burden, emotional burden, and social burden. Internal reliability was high (Cronbach’s alpha 0.898). RTT CIA represents a reliable and valid measure, providing a needed metric of caregiver burden in this disorder. En ligne : http://dx.doi.org/10.1007/s10803-017-3034-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=304

Automatic cortical representation of auditory pitch changes in Rett syndrome / John J. FOXE in Journal of Neurodevelopmental Disorders, 8-1 (December 2016)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 8-1 (December 2016) . - p.34 Titre : Automatic cortical representation of auditory pitch changes in Rett syndrome Type de document : texte imprimé Auteurs : John J. FOXE, Auteur ; Kelly M. BURKE, Auteur ; Gizely N. ANDRADE, Auteur ; Aleksandra DJUKIC, Auteur ; Hans-Peter FREY, Auteur ; Sophie MOLHOLM, Auteur Article en page(s) : p.34 Langues : Anglais (eng) Mots-clés : Aep  Auditory evoked potential  Eeg  Erp  Event-related potential  Females  High-density electrical mapping  Mecp2  Mmn  Mismatch negativity Index. décimale : PER Périodiques Résumé : BACKGROUND: Over the typical course of Rett syndrome, initial language and communication abilities deteriorate dramatically between the ages of 1 and 4 years, and a majority of these children go on to lose all oral communication abilities. It becomes extremely difficult for clinicians and caretakers to accurately assess the level of preserved auditory functioning in these children, an issue of obvious clinical import. Non-invasive electrophysiological techniques allow for the interrogation of auditory cortical processing without the need for overt behavioral responses. In particular, the mismatch negativity (MMN) component of the auditory evoked potential (AEP) provides an excellent and robust dependent measure of change detection and auditory sensory memory. Here, we asked whether females with Rett syndrome would produce the MMN to occasional changes in pitch in a regularly occurring stream of auditory tones. METHODS: Fourteen girls with genetically confirmed Rett syndrome and 22 age-matched neurotypical controls participated (ages 3.9-21.1 years). High-density electrophysiological recordings from 64 scalp electrodes were made while participants passively listened to a regularly occurring stream of 503-Hz auditory tone pips that was occasionally (15 % of presentations) interrupted by a higher-pitched deviant tone of 996 Hz. The MMN was derived by subtracting the AEP to these deviants from the AEP produced to the standard. RESULTS: Despite clearly anomalous morphology and latency of the AEP to simple pure-tone inputs in Rett syndrome, the MMN response was evident in both neurotypicals and Rett patients. However, we found that the pitch-evoked MMN was both delayed and protracted in duration in Rett, pointing to slowing of auditory responsiveness. CONCLUSIONS: The presence of the MMN in Rett patients suggests preserved abilities to process pitch changes in auditory sensory memory. This work represents a beginning step in an effort to comprehensively map the extent of auditory cortical functioning in Rett syndrome. These easily obtained objective brain measures of auditory processing have promise as biomarkers against which future therapeutic efforts can be assayed. En ligne : http://dx.doi.org/10.1186/s11689-016-9166-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=349 [article] Automatic cortical representation of auditory pitch changes in Rett syndrome [texte imprimé] / John J. FOXE, Auteur ; Kelly M. BURKE, Auteur ; Gizely N. ANDRADE, Auteur ; Aleksandra DJUKIC, Auteur ; Hans-Peter FREY, Auteur ; Sophie MOLHOLM, Auteur . - p.34. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 8-1 (December 2016) . - p.34 Mots-clés : Aep  Auditory evoked potential  Eeg  Erp  Event-related potential  Females  High-density electrical mapping  Mecp2  Mmn  Mismatch negativity Index. décimale : PER Périodiques Résumé : BACKGROUND: Over the typical course of Rett syndrome, initial language and communication abilities deteriorate dramatically between the ages of 1 and 4 years, and a majority of these children go on to lose all oral communication abilities. It becomes extremely difficult for clinicians and caretakers to accurately assess the level of preserved auditory functioning in these children, an issue of obvious clinical import. Non-invasive electrophysiological techniques allow for the interrogation of auditory cortical processing without the need for overt behavioral responses. In particular, the mismatch negativity (MMN) component of the auditory evoked potential (AEP) provides an excellent and robust dependent measure of change detection and auditory sensory memory. Here, we asked whether females with Rett syndrome would produce the MMN to occasional changes in pitch in a regularly occurring stream of auditory tones. METHODS: Fourteen girls with genetically confirmed Rett syndrome and 22 age-matched neurotypical controls participated (ages 3.9-21.1 years). High-density electrophysiological recordings from 64 scalp electrodes were made while participants passively listened to a regularly occurring stream of 503-Hz auditory tone pips that was occasionally (15 % of presentations) interrupted by a higher-pitched deviant tone of 996 Hz. The MMN was derived by subtracting the AEP to these deviants from the AEP produced to the standard. RESULTS: Despite clearly anomalous morphology and latency of the AEP to simple pure-tone inputs in Rett syndrome, the MMN response was evident in both neurotypicals and Rett patients. However, we found that the pitch-evoked MMN was both delayed and protracted in duration in Rett, pointing to slowing of auditory responsiveness. CONCLUSIONS: The presence of the MMN in Rett patients suggests preserved abilities to process pitch changes in auditory sensory memory. This work represents a beginning step in an effort to comprehensively map the extent of auditory cortical functioning in Rett syndrome. These easily obtained objective brain measures of auditory processing have promise as biomarkers against which future therapeutic efforts can be assayed. En ligne : http://dx.doi.org/10.1186/s11689-016-9166-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=349

Autonomic breathing abnormalities in Rett syndrome: caregiver perspectives in an international database study / Jessica MACKAY in Journal of Neurodevelopmental Disorders, 9-1 (December 2017)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 9-1 (December 2017) . - p.15 Titre : Autonomic breathing abnormalities in Rett syndrome: caregiver perspectives in an international database study Type de document : texte imprimé Auteurs : Jessica MACKAY, Auteur ; Jenny DOWNS, Auteur ; Kingsley WONG, Auteur ; Jane HEYWORTH, Auteur ; Amy EPSTEIN, Auteur ; Helen LEONARD, Auteur Article en page(s) : p.15 Langues : Anglais (eng) Mots-clés : Breathing disorders  Developmental disability  Genotype  International database  Mecp2  Rare disorder  Rett syndrome Index. décimale : PER Périodiques Résumé : BACKGROUND: Rett syndrome is a severe neurodevelopmental disorder associated with mutations in the MECP2 gene. Irregular breathing patterns and abdominal bloating are prominent but poorly understood features. Our aims were to characterize the abnormal breathing patterns and abdominal bloating, investigate the distribution of these by age and mutation type and examine their impact and management from a caregiver perspective. METHODS: We invited previously recruited families from the International Rett Syndrome Study to complete a web-based questionnaire concerning their family member with Rett syndrome aged between 2 and 57 years. We used logistic regression to investigate presence, frequency and impact of breath-holding, hyperventilation, or abdominal bloating by age group and mutation type. Age of onset for both breathing abnormalities was investigated using time-to-onset analysis, and the Kaplan-Meier method was used to estimate the failure function for the study sample. Descriptive statistics were used to characterize the management of irregular breathing. RESULTS: Questionnaires were returned by 413/482 (85.7%) families. Breath-holding was reported for 68.8%, hyperventilation for 46.4% and abdominal bloating for 42.4%. Hyperventilation was more prevalent and frequent in those younger than 7 years of age and abdominal bloating in those aged over 20 years. Onset of breathing irregularities usually occurred during early childhood. Caregivers perceived that daily life was considerably impacted for almost half (44.1%) of those with abdominal bloating and in just over than a third of those with breath-holding (35.8%) or hyperventilation (35.1%). Although perceived impact was broadly comparable between age and mutation groups for breath-holding, hyperventilation and abdominal bloating, girls and women with a p.Arg294* mutation were considered to be more affected by all three conditions. Only 31 individuals had received medically prescribed treatments including 12 different medications, added oxygen, rebreathing apparatus or non-invasive ventilation. CONCLUSIONS: Autonomic disturbances are prevalent and burdensome in Rett syndrome. This information may guide the design of inclusion criteria and outcome measures for clinical intervention trials targeting autonomic abnormalities. Further investigation of available treatments is necessary to delineate evidence-based management pathways. En ligne : http://dx.doi.org/10.1186/s11689-017-9196-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=350 [article] Autonomic breathing abnormalities in Rett syndrome: caregiver perspectives in an international database study [texte imprimé] / Jessica MACKAY, Auteur ; Jenny DOWNS, Auteur ; Kingsley WONG, Auteur ; Jane HEYWORTH, Auteur ; Amy EPSTEIN, Auteur ; Helen LEONARD, Auteur . - p.15. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 9-1 (December 2017) . - p.15 Mots-clés : Breathing disorders  Developmental disability  Genotype  International database  Mecp2  Rare disorder  Rett syndrome Index. décimale : PER Périodiques Résumé : BACKGROUND: Rett syndrome is a severe neurodevelopmental disorder associated with mutations in the MECP2 gene. Irregular breathing patterns and abdominal bloating are prominent but poorly understood features. Our aims were to characterize the abnormal breathing patterns and abdominal bloating, investigate the distribution of these by age and mutation type and examine their impact and management from a caregiver perspective. METHODS: We invited previously recruited families from the International Rett Syndrome Study to complete a web-based questionnaire concerning their family member with Rett syndrome aged between 2 and 57 years. We used logistic regression to investigate presence, frequency and impact of breath-holding, hyperventilation, or abdominal bloating by age group and mutation type. Age of onset for both breathing abnormalities was investigated using time-to-onset analysis, and the Kaplan-Meier method was used to estimate the failure function for the study sample. Descriptive statistics were used to characterize the management of irregular breathing. RESULTS: Questionnaires were returned by 413/482 (85.7%) families. Breath-holding was reported for 68.8%, hyperventilation for 46.4% and abdominal bloating for 42.4%. Hyperventilation was more prevalent and frequent in those younger than 7 years of age and abdominal bloating in those aged over 20 years. Onset of breathing irregularities usually occurred during early childhood. Caregivers perceived that daily life was considerably impacted for almost half (44.1%) of those with abdominal bloating and in just over than a third of those with breath-holding (35.8%) or hyperventilation (35.1%). Although perceived impact was broadly comparable between age and mutation groups for breath-holding, hyperventilation and abdominal bloating, girls and women with a p.Arg294* mutation were considered to be more affected by all three conditions. Only 31 individuals had received medically prescribed treatments including 12 different medications, added oxygen, rebreathing apparatus or non-invasive ventilation. CONCLUSIONS: Autonomic disturbances are prevalent and burdensome in Rett syndrome. This information may guide the design of inclusion criteria and outcome measures for clinical intervention trials targeting autonomic abnormalities. Further investigation of available treatments is necessary to delineate evidence-based management pathways. En ligne : http://dx.doi.org/10.1186/s11689-017-9196-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=350

Brief Report: MECP2 Mutations in People Without Rett Syndrome / Bernhard SUTER in Journal of Autism and Developmental Disorders, 44-3 (March 2014)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 44-3 (March 2014) . - p.703-711 Titre : Brief Report: MECP2 Mutations in People Without Rett Syndrome Type de document : texte imprimé Auteurs : Bernhard SUTER, Auteur ; Diane TREADWELL-DEERING, Auteur ; Huda Y. ZOGHBI, Auteur ; Daniel G. GLAZE, Auteur ; Jeffrey L. NEUL, Auteur Article en page(s) : p.703-711 Langues : Anglais (eng) Mots-clés : Rett syndrome  Autism  Neurodevelopmental disorders  MECP2  Epigenetics  Neurogenetics Index. décimale : PER Périodiques Résumé : Mutations in Methyl-CpG-Binding protein 2 (MECP2) are commonly associated with the neurodevelopmental disorder Rett syndrome (RTT). However, some people with RTT do not have mutations in MECP2, and interestingly there have been people identified with MECP2 mutations that do not have the clinical features of RTT. In this report we present four people with neurodevelopmental abnormalities and clear RTT-disease causing MECP2 mutation but lacking the characteristic clinical features of RTT. One patient’s symptoms suggest an extension of the known spectrum of MECP2 associated phenotypes to include global developmental delay with obsessive compulsive disorder and attention deficit hyperactivity disorder. These results reemphasize that RTT should remain a clinical diagnosis, based on the recent consensus criteria. En ligne : http://dx.doi.org/10.1007/s10803-013-1902-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=225 [article] Brief Report: MECP2 Mutations in People Without Rett Syndrome [texte imprimé] / Bernhard SUTER, Auteur ; Diane TREADWELL-DEERING, Auteur ; Huda Y. ZOGHBI, Auteur ; Daniel G. GLAZE, Auteur ; Jeffrey L. NEUL, Auteur . - p.703-711. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 44-3 (March 2014) . - p.703-711 Mots-clés : Rett syndrome  Autism  Neurodevelopmental disorders  MECP2  Epigenetics  Neurogenetics Index. décimale : PER Périodiques Résumé : Mutations in Methyl-CpG-Binding protein 2 (MECP2) are commonly associated with the neurodevelopmental disorder Rett syndrome (RTT). However, some people with RTT do not have mutations in MECP2, and interestingly there have been people identified with MECP2 mutations that do not have the clinical features of RTT. In this report we present four people with neurodevelopmental abnormalities and clear RTT-disease causing MECP2 mutation but lacking the characteristic clinical features of RTT. One patient’s symptoms suggest an extension of the known spectrum of MECP2 associated phenotypes to include global developmental delay with obsessive compulsive disorder and attention deficit hyperactivity disorder. These results reemphasize that RTT should remain a clinical diagnosis, based on the recent consensus criteria. En ligne : http://dx.doi.org/10.1007/s10803-013-1902-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=225

Brief Report: Regression Timing and Associated Features in MECP2 Duplication Syndrome / Sarika U. PETERS in Journal of Autism and Developmental Disorders, 43-10 (October 2013)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 43-10 (October 2013) . - p.2484-2490 Titre : Brief Report: Regression Timing and Associated Features in MECP2 Duplication Syndrome Type de document : texte imprimé Auteurs : Sarika U. PETERS, Auteur ; Rachel J. HUNDLEY, Auteur ; Amy K. WILSON, Auteur ; Claudia M.B. CARVALHO, Auteur ; James R. LUPSKI, Auteur ; M.B. RAMOCKI, Auteur Article en page(s) : p.2484-2490 Langues : Anglais (eng) Mots-clés : Regression  MECP2  Seizures Index. décimale : PER Périodiques Résumé : The aim of this study was to determine the frequency, timing, and associated features of developmental regression in MECP2 duplication syndrome. We also examined whether duplication size was associated with regression. Comprehensive psychological evaluations were used to assess 17 boys with MECP2 duplication syndrome. Information about regression was gathered via parent report. Eight of 17 boys exhibited regression in language skills, while seven of 17 exhibited regression in other skill areas. Regression in “other skill” areas coincided with seizure onset and with a prior autism diagnosis in six of seven participants. Regression was not associated with duplication size. Questions remain as to why some boys regress, and future work is necessary to understand the underlying mechanism(s) that causes regression. En ligne : http://dx.doi.org/10.1007/s10803-013-1796-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=215 [article] Brief Report: Regression Timing and Associated Features in MECP2 Duplication Syndrome [texte imprimé] / Sarika U. PETERS, Auteur ; Rachel J. HUNDLEY, Auteur ; Amy K. WILSON, Auteur ; Claudia M.B. CARVALHO, Auteur ; James R. LUPSKI, Auteur ; M.B. RAMOCKI, Auteur . - p.2484-2490. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 43-10 (October 2013) . - p.2484-2490 Mots-clés : Regression  MECP2  Seizures Index. décimale : PER Périodiques Résumé : The aim of this study was to determine the frequency, timing, and associated features of developmental regression in MECP2 duplication syndrome. We also examined whether duplication size was associated with regression. Comprehensive psychological evaluations were used to assess 17 boys with MECP2 duplication syndrome. Information about regression was gathered via parent report. Eight of 17 boys exhibited regression in language skills, while seven of 17 exhibited regression in other skill areas. Regression in “other skill” areas coincided with seizure onset and with a prior autism diagnosis in six of seven participants. Regression was not associated with duplication size. Questions remain as to why some boys regress, and future work is necessary to understand the underlying mechanism(s) that causes regression. En ligne : http://dx.doi.org/10.1007/s10803-013-1796-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=215

Characterization of Rett Syndrome-like phenotypes in Mecp2-knockout rats / Yang WU in Journal of Neurodevelopmental Disorders, 8-1 (December 2016)  

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Deficits in skilled motor and auditory learning in a rat model of Rett syndrome / Katherine S. ADCOCK in Journal of Neurodevelopmental Disorders, 12 (2020)  

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Drug Studies on Rett Syndrome: From Bench to Bedside / Mohan GOMATHI in Journal of Autism and Developmental Disorders, 50-8 (August 2020)  

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Effects of early-life exposure to THIP on phenotype development in a mouse model of Rett syndrome / Weiwei ZHONG in Journal of Neurodevelopmental Disorders, 8-1 (December 2016)  

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Genetic Testing in Patients with Neurodevelopmental Disorders: Experience of 511 Patients at Cincinnati Children's Hospital Medical Center / Xiaoli DU in Journal of Autism and Developmental Disorders, 52-11 (November 2022)  

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