Atypical development of the central auditory system in young children with Autism spectrum disorder / Yuko YOSHIMURA in Autism Research, 9-11 (November 2016)  

Public ISBD [article]  inAutism Research > 9-11 (November 2016) . - p.1216-1226 Titre : Atypical development of the central auditory system in young children with Autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Yuko YOSHIMURA, Auteur ; Mitsuru KIKUCHI, Auteur ; Hirotoshi HIRAISHI, Auteur ; Chiaki HASEGAWA, Auteur ; Tetsuya TAKAHASHI, Auteur ; Gerard B. REMIJN, Auteur ; Manabu OI, Auteur ; Toshio MUNESUE, Auteur ; Haruhiro HIGASHIDA, Auteur ; Yoshio MINABE, Auteur ; Haruyuki KOJIMA, Auteur Article en page(s) : p.1216-1226 Langues : Anglais (eng) Mots-clés : autism spectrum disorder  magnetoencephalography  P1m  young children Index. décimale : PER Périodiques Résumé : The P1m component of the auditory evoked magnetic field is the earliest cortical response associated with language acquisition. However, the growth curve of the P1m component is unknown in both typically developing (TD) and atypically developing children. The aim of this study is to clarify the developmental pattern of this component when evoked by binaural human voice stimulation using child-customized magnetoencephalography. A total of 35 young TD children (32–121 months of age) and 35 children with autism spectrum disorder (ASD) (38–111 months of age) participated in this study. This is the first report to demonstrate an inverted U-shaped growth curve for the P1m dipole intensity in the left hemisphere in TD children. In addition, our results revealed a more diversified age-related distribution of auditory brain responses in 3- to 9-year-old children with ASD. These results demonstrate the diversified growth curve of the P1m component in ASD during young childhood, which is a crucial period for first language acquisition. En ligne : http://dx.doi.org/10.1002/aur.1604 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=297 [article] Atypical development of the central auditory system in young children with Autism spectrum disorder [Texte imprimé et/ou numérique] / Yuko YOSHIMURA, Auteur ; Mitsuru KIKUCHI, Auteur ; Hirotoshi HIRAISHI, Auteur ; Chiaki HASEGAWA, Auteur ; Tetsuya TAKAHASHI, Auteur ; Gerard B. REMIJN, Auteur ; Manabu OI, Auteur ; Toshio MUNESUE, Auteur ; Haruhiro HIGASHIDA, Auteur ; Yoshio MINABE, Auteur ; Haruyuki KOJIMA, Auteur . - p.1216-1226. Langues : Anglais (eng) in Autism Research > 9-11 (November 2016) . - p.1216-1226 Mots-clés : autism spectrum disorder  magnetoencephalography  P1m  young children Index. décimale : PER Périodiques Résumé : The P1m component of the auditory evoked magnetic field is the earliest cortical response associated with language acquisition. However, the growth curve of the P1m component is unknown in both typically developing (TD) and atypically developing children. The aim of this study is to clarify the developmental pattern of this component when evoked by binaural human voice stimulation using child-customized magnetoencephalography. A total of 35 young TD children (32–121 months of age) and 35 children with autism spectrum disorder (ASD) (38–111 months of age) participated in this study. This is the first report to demonstrate an inverted U-shaped growth curve for the P1m dipole intensity in the left hemisphere in TD children. In addition, our results revealed a more diversified age-related distribution of auditory brain responses in 3- to 9-year-old children with ASD. These results demonstrate the diversified growth curve of the P1m component in ASD during young childhood, which is a crucial period for first language acquisition. En ligne : http://dx.doi.org/10.1002/aur.1604 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=297

A pilot study of serotonergic modulation after long-term administration of oxytocin in autism spectrum disorder / Tetsu HIROSAWA in Autism Research, 10-5 (May 2017)  

Public ISBD [article]  inAutism Research > 10-5 (May 2017) . - p.821-828 Titre : A pilot study of serotonergic modulation after long-term administration of oxytocin in autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Tetsu HIROSAWA, Auteur ; Mitsuru KIKUCHI, Auteur ; Yasuomi OUCHI, Auteur ; Tetsuya TAKAHASHI, Auteur ; Yuko YOSHIMURA, Auteur ; Hirotaka KOSAKA, Auteur ; Naoki FURUTANI, Auteur ; Hirotoshi HIRAISHI, Auteur ; Mina FUKAI, Auteur ; Masamichi YOKOKURA, Auteur ; Etsuji YOSHIKAWA, Auteur ; Tomoyasu BUNAI, Auteur ; Yoshio MINABE, Auteur Article en page(s) : p.821-828 Langues : Anglais (eng) Mots-clés : autism spectrum disorder  oxytocin  positron emission tomography  serotonin transporter Index. décimale : PER Périodiques Résumé : Oxytocin (OT) and the serotonergic system putatively play important roles in autism spectrum disorder (ASD) etiology and symptoms, but no direct neurobiological evidence exists for long-term OT administration effects on the brain's serotonergic system. This pilot study examined 10 male participants with ASD who were administered OT intranasally for 8–10 weeks in an open-label, single-arm, nonrandomized, and uncontrolled manner. Positron emission tomography (PET) with a radiotracer (11C)?3-amino-4-(2-[(dimethylamino)methyl]phenylthio)benzonitrile (11C-DASB) was used before and after OT treatment. The binding potential of serotonin transporter (11C-DASB BPND) was then estimated. The main outcome measures were changes in 11C-DASB BPND and their correlation with changes in symptoms. ASD participants showed significantly elevated 11C-DASB BPND in the left inferior frontal gyrus extending to the left middle frontal gyrus. No significant correlation was found between the change in any clinical symptom and the change in 11C-DASB BPND. This report of a pilot study is the first describing long-term effects of OT on the brain's serotonin system in ASD. Additional randomized controlled studies must be conducted to confirm whether activation of the serotonergic system contributes to the prosocial effect of OT in people with ASD. En ligne : http://dx.doi.org/10.1002/aur.1761 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=307 [article] A pilot study of serotonergic modulation after long-term administration of oxytocin in autism spectrum disorder [Texte imprimé et/ou numérique] / Tetsu HIROSAWA, Auteur ; Mitsuru KIKUCHI, Auteur ; Yasuomi OUCHI, Auteur ; Tetsuya TAKAHASHI, Auteur ; Yuko YOSHIMURA, Auteur ; Hirotaka KOSAKA, Auteur ; Naoki FURUTANI, Auteur ; Hirotoshi HIRAISHI, Auteur ; Mina FUKAI, Auteur ; Masamichi YOKOKURA, Auteur ; Etsuji YOSHIKAWA, Auteur ; Tomoyasu BUNAI, Auteur ; Yoshio MINABE, Auteur . - p.821-828. Langues : Anglais (eng) in Autism Research > 10-5 (May 2017) . - p.821-828 Mots-clés : autism spectrum disorder  oxytocin  positron emission tomography  serotonin transporter Index. décimale : PER Périodiques Résumé : Oxytocin (OT) and the serotonergic system putatively play important roles in autism spectrum disorder (ASD) etiology and symptoms, but no direct neurobiological evidence exists for long-term OT administration effects on the brain's serotonergic system. This pilot study examined 10 male participants with ASD who were administered OT intranasally for 8–10 weeks in an open-label, single-arm, nonrandomized, and uncontrolled manner. Positron emission tomography (PET) with a radiotracer (11C)?3-amino-4-(2-[(dimethylamino)methyl]phenylthio)benzonitrile (11C-DASB) was used before and after OT treatment. The binding potential of serotonin transporter (11C-DASB BPND) was then estimated. The main outcome measures were changes in 11C-DASB BPND and their correlation with changes in symptoms. ASD participants showed significantly elevated 11C-DASB BPND in the left inferior frontal gyrus extending to the left middle frontal gyrus. No significant correlation was found between the change in any clinical symptom and the change in 11C-DASB BPND. This report of a pilot study is the first describing long-term effects of OT on the brain's serotonin system in ASD. Additional randomized controlled studies must be conducted to confirm whether activation of the serotonergic system contributes to the prosocial effect of OT in people with ASD. En ligne : http://dx.doi.org/10.1002/aur.1761 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=307

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