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Auteur Melody MY CHAN |
Documents disponibles écrits par cet auteur (2)



Effects of prefrontal transcranial direct current stimulation on social functioning in autism spectrum disorder: A randomized clinical trial / Yvonne MY HAN in Autism, 27-8 (November 2023)
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[article]
Titre : Effects of prefrontal transcranial direct current stimulation on social functioning in autism spectrum disorder: A randomized clinical trial Type de document : Texte imprimé et/ou numérique Auteurs : Yvonne MY HAN, Auteur ; Melody MY CHAN, Auteur ; Caroline KS SHEA, Auteur ; Flora YM MO, Auteur ; Klaire WK YIU, Auteur ; Raymond CK CHUNG, Auteur ; Mei-chun CHEUNG, Auteur ; Agnes S CHAN, Auteur Article en page(s) : p.2465-2482 Mots-clés : ASD behavior cognition RCT social tDCS Index. décimale : PER Périodiques Résumé : This triple-arm, double-blind, randomized clinical trial investigated the effect of multisession prefrontal transcranial direct current stimulation (tDCS) on social functioning in individuals with autism spectrum disorder (ASD). A total of 105 individuals (age 14-21?years) diagnosed with ASD were randomized into the active-tDCS, sham-tDCS, and waitlist control groups. The experimental group received 20?min of 1.5?mA tDCS stimulation (cathode: F3; anode: Fp2) for 10?days with concurrent computerized cognitive remediation training. Changes in overall social functioning, social communication, and restricted, repetitive behaviors (RRB) were measured by the Social Responsiveness Scale-2nd edition (SRS-2). Two-level hierarchical linear mixed-model analysis showed significant group*time interactions for SRS-2 total [F(2, 107.09)?=?7.82; p?=?0.001] and RRB [F(2, 90.26)?=?5.62; p?=?0.005] T-scores. When compared with the waitlist control group, the changes in scores were only significant in active-tDCS (SRS-2 total T-score p?0.001, d?=?0.61; SRS-2 RRB T-score p?=?0.002, d?=?0.88), but not sham-tDCS (SRS-2 total T-score p?0.12, d?=?0.30; SRS-2 RRB T-score p?=?0.54, d?=?0.17) group. Multiple sessions of prefrontal tDCS coupled with cognitive training is a safe and effective treatment for improving social functioning in people with ASD. Trial Registration: ClinicalTrials.gov (ID: NCT03814083; URL: https://clinicaltrials.gov/ct2/show/NCT03814083).Lay abstractCurrently available pharmacological and behavioral interventions for adolescents and young adults with autism spectrum disorder (ASD) yield only modest effect in alleviating their core behavioral and cognitive symptoms, and some of these treatment options are associated with undesirable side effects. Hence, developing effective treatment protocols is urgently needed. Given emerging evidence shows that the abnormal connections of the frontal brain regions contribute to the manifestations of ASD behavioral and cognitive impairments, noninvasive treatment modalities that are capable in modulating brain connections, such as transcranial direct current stimulation (tDCS), have been postulated to be potentially promising for alleviating core symptoms in ASD. However, whether tDCS can reduce behavioral symptoms and enhance cognitive performance in ASD remains unclear. This randomized controlled trial involving 105 adolescents and young adults with ASD showed that multiple sessions of a tDCS protocol, which was paired up with computerized cognitive training, was effective in improving social functioning in adolescents and young adults with ASD. No prolonged and serious side effects were observed. With more future studies conducted in different clinical settings that recruit participants from a wider age range, this tDCS protocol may be potentially beneficial to a broad spectrum of individuals with autism. En ligne : http://dx.doi.org/10.1177/13623613231169547 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=513
in Autism > 27-8 (November 2023) . - p.2465-2482[article] Effects of prefrontal transcranial direct current stimulation on social functioning in autism spectrum disorder: A randomized clinical trial [Texte imprimé et/ou numérique] / Yvonne MY HAN, Auteur ; Melody MY CHAN, Auteur ; Caroline KS SHEA, Auteur ; Flora YM MO, Auteur ; Klaire WK YIU, Auteur ; Raymond CK CHUNG, Auteur ; Mei-chun CHEUNG, Auteur ; Agnes S CHAN, Auteur . - p.2465-2482.
in Autism > 27-8 (November 2023) . - p.2465-2482
Mots-clés : ASD behavior cognition RCT social tDCS Index. décimale : PER Périodiques Résumé : This triple-arm, double-blind, randomized clinical trial investigated the effect of multisession prefrontal transcranial direct current stimulation (tDCS) on social functioning in individuals with autism spectrum disorder (ASD). A total of 105 individuals (age 14-21?years) diagnosed with ASD were randomized into the active-tDCS, sham-tDCS, and waitlist control groups. The experimental group received 20?min of 1.5?mA tDCS stimulation (cathode: F3; anode: Fp2) for 10?days with concurrent computerized cognitive remediation training. Changes in overall social functioning, social communication, and restricted, repetitive behaviors (RRB) were measured by the Social Responsiveness Scale-2nd edition (SRS-2). Two-level hierarchical linear mixed-model analysis showed significant group*time interactions for SRS-2 total [F(2, 107.09)?=?7.82; p?=?0.001] and RRB [F(2, 90.26)?=?5.62; p?=?0.005] T-scores. When compared with the waitlist control group, the changes in scores were only significant in active-tDCS (SRS-2 total T-score p?0.001, d?=?0.61; SRS-2 RRB T-score p?=?0.002, d?=?0.88), but not sham-tDCS (SRS-2 total T-score p?0.12, d?=?0.30; SRS-2 RRB T-score p?=?0.54, d?=?0.17) group. Multiple sessions of prefrontal tDCS coupled with cognitive training is a safe and effective treatment for improving social functioning in people with ASD. Trial Registration: ClinicalTrials.gov (ID: NCT03814083; URL: https://clinicaltrials.gov/ct2/show/NCT03814083).Lay abstractCurrently available pharmacological and behavioral interventions for adolescents and young adults with autism spectrum disorder (ASD) yield only modest effect in alleviating their core behavioral and cognitive symptoms, and some of these treatment options are associated with undesirable side effects. Hence, developing effective treatment protocols is urgently needed. Given emerging evidence shows that the abnormal connections of the frontal brain regions contribute to the manifestations of ASD behavioral and cognitive impairments, noninvasive treatment modalities that are capable in modulating brain connections, such as transcranial direct current stimulation (tDCS), have been postulated to be potentially promising for alleviating core symptoms in ASD. However, whether tDCS can reduce behavioral symptoms and enhance cognitive performance in ASD remains unclear. This randomized controlled trial involving 105 adolescents and young adults with ASD showed that multiple sessions of a tDCS protocol, which was paired up with computerized cognitive training, was effective in improving social functioning in adolescents and young adults with ASD. No prolonged and serious side effects were observed. With more future studies conducted in different clinical settings that recruit participants from a wider age range, this tDCS protocol may be potentially beneficial to a broad spectrum of individuals with autism. En ligne : http://dx.doi.org/10.1177/13623613231169547 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=513 Prevalence of autism in first-episode psychosis in two Hong Kong teaching hospitals / Melody MY CHAN ; Flora YM MO ; Se-fong HUNG ; Patrick Wl LEUNG ; Kelly YC LAI ; Caroline KS SHEA in Autism, 28-9 (September 2024)
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[article]
Titre : Prevalence of autism in first-episode psychosis in two Hong Kong teaching hospitals Type de document : Texte imprimé et/ou numérique Auteurs : Melody MY CHAN, Auteur ; Flora YM MO, Auteur ; Se-fong HUNG, Auteur ; Patrick Wl LEUNG, Auteur ; Kelly YC LAI, Auteur ; Caroline KS SHEA, Auteur Article en page(s) : p.2412-2421 Langues : (en) Mots-clés : adolescence autism comorbidity FEP prevalence psychosis Index. décimale : PER Périodiques Résumé : This study estimated the prevalence of autism spectrum disorder in a 5-year inpatient cohort of children and adolescents diagnosed with first-episode psychosis in two Hong Kong teaching hospitals, and explored the clinical characteristics predicting first-episode psychosis-autism spectrum disorder comorbidity. The autism spectrum disorder diagnoses of 103 patients with first-episode psychosis were confirmed by Autism Diagnostic Interview-Revised. Based on the (1) Diagnostic and Statistical Manual of Mental Disorders (5th ed.) diagnostic checklist and (2) Autism Diagnostic Interview-Revised, three major observations were reported: (1) the prevalence of autism spectrum disorder among children and adolescents with first-episode psychosis was 28.2% (95% confidence interval = (19.7%, 37.9%)); (2) after administering the Autism Diagnostic Interview-Revised, an additional 31.0% of first-episode psychosis patients met the clinical diagnostic cut-off for autism spectrum disorder; and (3) multivariate binary logistic regression analysis showed that first-episode psychosis patients with a comorbid autism spectrum disorder diagnosis were more likely to be a male than a female (adjusted odds ratio = 3.57, 95% confidence interval = (1.29, 9.86), p = 0.014). Adding to the current literature, this study examined first-episode psychosis-autism spectrum disorder comorbidity with a large Chinese, inpatient sample with first-episode psychosis. Consistent with studies conducted overseas, we show that autism spectrum disorder is a common comorbidity among Chinese first-episode psychosis patients. A comprehensive autism spectrum disorder assessment that incorporates both observation-based and parent-report diagnostic tools is warranted for children and adolescents, especially boys, with psychosis. Lay abstract Autistic features are commonly observed in children and adolescents with first-episode psychosis, but they are sometimes overlooked by clinicians and caregivers. By comprehensively examining the clinical profiles of 103 children and adolescents (below 18?years old) with first-episode psychosis and conducting the Autism Diagnostic Interview-Revised (the 'gold standard' autism diagnostic tool) with their primary caregivers, we showed that around 28% of patients with first-episode psychosis had a comorbid autism diagnosis, and boys were 3.57 times more likely to have first-episode psychosis-autism spectrum disorder comorbidity than girls. After administering the Autism Diagnostic Interview-Revised, we also observed that an additional 30% of patients with first-episode psychosis met the autism spectrum disorder diagnostic cut-off; their autism spectrum disorder symptoms were probably overshadowed by prodromal psychotic symptoms and left undetected before this study. The co-occurrence of autism and first-episode psychosis might be more common than we previously thought. Careful autism screening and assessment is highly recommended for clinicians working with patients with psychosis. En ligne : https://dx.doi.org/10.1177/13623613241259062 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=535
in Autism > 28-9 (September 2024) . - p.2412-2421[article] Prevalence of autism in first-episode psychosis in two Hong Kong teaching hospitals [Texte imprimé et/ou numérique] / Melody MY CHAN, Auteur ; Flora YM MO, Auteur ; Se-fong HUNG, Auteur ; Patrick Wl LEUNG, Auteur ; Kelly YC LAI, Auteur ; Caroline KS SHEA, Auteur . - p.2412-2421.
Langues : (en)
in Autism > 28-9 (September 2024) . - p.2412-2421
Mots-clés : adolescence autism comorbidity FEP prevalence psychosis Index. décimale : PER Périodiques Résumé : This study estimated the prevalence of autism spectrum disorder in a 5-year inpatient cohort of children and adolescents diagnosed with first-episode psychosis in two Hong Kong teaching hospitals, and explored the clinical characteristics predicting first-episode psychosis-autism spectrum disorder comorbidity. The autism spectrum disorder diagnoses of 103 patients with first-episode psychosis were confirmed by Autism Diagnostic Interview-Revised. Based on the (1) Diagnostic and Statistical Manual of Mental Disorders (5th ed.) diagnostic checklist and (2) Autism Diagnostic Interview-Revised, three major observations were reported: (1) the prevalence of autism spectrum disorder among children and adolescents with first-episode psychosis was 28.2% (95% confidence interval = (19.7%, 37.9%)); (2) after administering the Autism Diagnostic Interview-Revised, an additional 31.0% of first-episode psychosis patients met the clinical diagnostic cut-off for autism spectrum disorder; and (3) multivariate binary logistic regression analysis showed that first-episode psychosis patients with a comorbid autism spectrum disorder diagnosis were more likely to be a male than a female (adjusted odds ratio = 3.57, 95% confidence interval = (1.29, 9.86), p = 0.014). Adding to the current literature, this study examined first-episode psychosis-autism spectrum disorder comorbidity with a large Chinese, inpatient sample with first-episode psychosis. Consistent with studies conducted overseas, we show that autism spectrum disorder is a common comorbidity among Chinese first-episode psychosis patients. A comprehensive autism spectrum disorder assessment that incorporates both observation-based and parent-report diagnostic tools is warranted for children and adolescents, especially boys, with psychosis. Lay abstract Autistic features are commonly observed in children and adolescents with first-episode psychosis, but they are sometimes overlooked by clinicians and caregivers. By comprehensively examining the clinical profiles of 103 children and adolescents (below 18?years old) with first-episode psychosis and conducting the Autism Diagnostic Interview-Revised (the 'gold standard' autism diagnostic tool) with their primary caregivers, we showed that around 28% of patients with first-episode psychosis had a comorbid autism diagnosis, and boys were 3.57 times more likely to have first-episode psychosis-autism spectrum disorder comorbidity than girls. After administering the Autism Diagnostic Interview-Revised, we also observed that an additional 30% of patients with first-episode psychosis met the autism spectrum disorder diagnostic cut-off; their autism spectrum disorder symptoms were probably overshadowed by prodromal psychotic symptoms and left undetected before this study. The co-occurrence of autism and first-episode psychosis might be more common than we previously thought. Careful autism screening and assessment is highly recommended for clinicians working with patients with psychosis. En ligne : https://dx.doi.org/10.1177/13623613241259062 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=535