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Measures of tonic and phasic activity of the locus coeruleus-norepinephrine system in children with autism spectrum disorder: An event-related potential and pupillometry study / Yesol KIM in Autism Research, 15-12 (December 2022)
[article]
Titre : Measures of tonic and phasic activity of the locus coeruleus-norepinephrine system in children with autism spectrum disorder: An event-related potential and pupillometry study Type de document : Texte imprimé et/ou numérique Auteurs : Yesol KIM, Auteur ; Girija KADLASKAR, Auteur ; Rebecca McNally KEEHN, Auteur ; Brandon KEEHN, Auteur Article en page(s) : p.2250-2264 Langues : Anglais (eng) Mots-clés : Child Humans Locus Coeruleus Autism Spectrum Disorder Norepinephrine Attention/physiology Evoked Potentials autism spectrum disorder electrophysiology eye-tracking locus coeruleus Index. décimale : PER Périodiques Résumé : A growing body of research suggests that locus coeruleus-norepinephrine (LC-NE) system may function differently in individuals with autism spectrum disorder (ASD). Understanding the dynamics of both tonic (resting pupil diameter) and phasic (pupil dilation response [PDR] and event-related potential [ERP]) indices may provide meaningful insights about the nature of LC-NE function in ASD. Twenty-four children with ASD and 27 age- and nonverbal-IQ matched typically developing (TD) children completed two experiments: (1) a resting eye-tracking task to measure tonic pupil diameter, and (2) a three-stimulus oddball paradigm to measure phasic responsivity using PDR and ERP. Consistent with prior reports, our results indicate that children with ASD exhibit increased tonic (resting pupil diameter) and reduced phasic (PDR and ERP) activity of the LC-NE system compared to their TD peers. For both groups, decreased phasic responsivity was associated with increased resting pupil diameter. Lastly, tonic and phasic LC-NE indices were primarily related to measures of attention-deficit/hyperactivity disorder (ADHD), and not ASD, symptomatology. These findings expand our understanding of neurophysiological differences present in ASD and demonstrate that aberrant LC-NE activation may be associated with atypical arousal and decreased responsivity to behaviorally-relevant information in ASD. En ligne : http://dx.doi.org/10.1002/aur.2820 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=488
in Autism Research > 15-12 (December 2022) . - p.2250-2264[article] Measures of tonic and phasic activity of the locus coeruleus-norepinephrine system in children with autism spectrum disorder: An event-related potential and pupillometry study [Texte imprimé et/ou numérique] / Yesol KIM, Auteur ; Girija KADLASKAR, Auteur ; Rebecca McNally KEEHN, Auteur ; Brandon KEEHN, Auteur . - p.2250-2264.
Langues : Anglais (eng)
in Autism Research > 15-12 (December 2022) . - p.2250-2264
Mots-clés : Child Humans Locus Coeruleus Autism Spectrum Disorder Norepinephrine Attention/physiology Evoked Potentials autism spectrum disorder electrophysiology eye-tracking locus coeruleus Index. décimale : PER Périodiques Résumé : A growing body of research suggests that locus coeruleus-norepinephrine (LC-NE) system may function differently in individuals with autism spectrum disorder (ASD). Understanding the dynamics of both tonic (resting pupil diameter) and phasic (pupil dilation response [PDR] and event-related potential [ERP]) indices may provide meaningful insights about the nature of LC-NE function in ASD. Twenty-four children with ASD and 27 age- and nonverbal-IQ matched typically developing (TD) children completed two experiments: (1) a resting eye-tracking task to measure tonic pupil diameter, and (2) a three-stimulus oddball paradigm to measure phasic responsivity using PDR and ERP. Consistent with prior reports, our results indicate that children with ASD exhibit increased tonic (resting pupil diameter) and reduced phasic (PDR and ERP) activity of the LC-NE system compared to their TD peers. For both groups, decreased phasic responsivity was associated with increased resting pupil diameter. Lastly, tonic and phasic LC-NE indices were primarily related to measures of attention-deficit/hyperactivity disorder (ADHD), and not ASD, symptomatology. These findings expand our understanding of neurophysiological differences present in ASD and demonstrate that aberrant LC-NE activation may be associated with atypical arousal and decreased responsivity to behaviorally-relevant information in ASD. En ligne : http://dx.doi.org/10.1002/aur.2820 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=488 Pupillometric measures of altered stimulus-evoked locus coeruleus-norepinephrine activity explain attenuated social attention in preschoolers with autism spectrum disorder / Leonie POLZER in Autism Research, 15-11 (November 2022)
[article]
Titre : Pupillometric measures of altered stimulus-evoked locus coeruleus-norepinephrine activity explain attenuated social attention in preschoolers with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Leonie POLZER, Auteur ; Christine M. FREITAG, Auteur ; Nico BAST, Auteur Article en page(s) : p.2167-2180 Langues : Anglais (eng) Mots-clés : Child Humans Child, Preschool Autism Spectrum Disorder/diagnosis Locus Coeruleus Norepinephrine Attention/physiology Pupil/physiology attention eye-tracking technology preschool pupil Index. décimale : PER Périodiques Résumé : Attenuated social attention has been described as a reduced preference for social compared to geometric motion in preschoolers with autism spectrum disorder (ASD). The locus coeruleus-norpinephrine (LC-NE) system modulates sensory reactivity and is a promising underlying mechanism. LC-NE activity is indexed by a stimulus-evoked pupillary response (SEPR) and partially by a luminance-adaptation pupillary response (LAPR), which were both shown to be aberrant in ASD. We examined whether SEPR and LAPR explain an attenuated social motion preference. We applied pupillometry via video-based eye tracking in young children (18-65 months) with ASD (n = 57) and typically developing (TD) children (n = 39) during a preferential looking paradigm of competing social and geometric motion and a changing light condition paradigm. We found an attenuated social motion preference in the ASD compared to the TD group. This was accompanied by atypical pupillometry showing a smaller SEPR to social motion, a larger SEPR to geometric motion and a reduced LAPR to a dark screen. SEPR but not LAPR explained the group difference in social motion preference. An ASD diagnosis was statistically predicted by the social motion preference, while this effect was mediated by the inclusion of SEPR to geometric and social motion. Our findings suggest a decreased sensory reactivity to social and increased reactivity to non-social motion in ASD, which may concurrently contribute to an attenuated social attention. The LC-NE system is supported as a promising underlying mechanism of altered social attention in young children with ASD, while the specificity of findings remains to be addressed. En ligne : http://dx.doi.org/10.1002/aur.2818 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=488
in Autism Research > 15-11 (November 2022) . - p.2167-2180[article] Pupillometric measures of altered stimulus-evoked locus coeruleus-norepinephrine activity explain attenuated social attention in preschoolers with autism spectrum disorder [Texte imprimé et/ou numérique] / Leonie POLZER, Auteur ; Christine M. FREITAG, Auteur ; Nico BAST, Auteur . - p.2167-2180.
Langues : Anglais (eng)
in Autism Research > 15-11 (November 2022) . - p.2167-2180
Mots-clés : Child Humans Child, Preschool Autism Spectrum Disorder/diagnosis Locus Coeruleus Norepinephrine Attention/physiology Pupil/physiology attention eye-tracking technology preschool pupil Index. décimale : PER Périodiques Résumé : Attenuated social attention has been described as a reduced preference for social compared to geometric motion in preschoolers with autism spectrum disorder (ASD). The locus coeruleus-norpinephrine (LC-NE) system modulates sensory reactivity and is a promising underlying mechanism. LC-NE activity is indexed by a stimulus-evoked pupillary response (SEPR) and partially by a luminance-adaptation pupillary response (LAPR), which were both shown to be aberrant in ASD. We examined whether SEPR and LAPR explain an attenuated social motion preference. We applied pupillometry via video-based eye tracking in young children (18-65 months) with ASD (n = 57) and typically developing (TD) children (n = 39) during a preferential looking paradigm of competing social and geometric motion and a changing light condition paradigm. We found an attenuated social motion preference in the ASD compared to the TD group. This was accompanied by atypical pupillometry showing a smaller SEPR to social motion, a larger SEPR to geometric motion and a reduced LAPR to a dark screen. SEPR but not LAPR explained the group difference in social motion preference. An ASD diagnosis was statistically predicted by the social motion preference, while this effect was mediated by the inclusion of SEPR to geometric and social motion. Our findings suggest a decreased sensory reactivity to social and increased reactivity to non-social motion in ASD, which may concurrently contribute to an attenuated social attention. The LC-NE system is supported as a promising underlying mechanism of altered social attention in young children with ASD, while the specificity of findings remains to be addressed. En ligne : http://dx.doi.org/10.1002/aur.2818 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=488
[article]
Titre : Impairment of social behaviors in Arhgef10 knockout mice Type de document : Texte imprimé et/ou numérique Auteurs : D. H. LU, Auteur ; H. M. LIAO, Auteur ; C. H. CHEN, Auteur ; H. J. TU, Auteur ; H. C. LIOU, Auteur ; S. S. GAU, Auteur ; W. M. FU, Auteur Article en page(s) : 11p. Langues : Anglais (eng) Mots-clés : Arhgef10 Autism spectrum disorder Norepinephrine Serotonin Social deficits Index. décimale : PER Périodiques Résumé : Background: Impaired social interaction is one of the essential features of autism spectrum disorder (ASD). Our previous copy number variation (CNV) study discovered a novel deleted region associated with ASD. One of the genes included in the deleted region is ARHGEF10. A missense mutation of ARHGEF10 has been reported to be one of the contributing factors in several diseases of the central nervous system. However, the relationship between the loss of ARHGEF10 and the clinical symptoms of ASD is unclear. Methods: We generated Arhgef10 knockout mice as a model of ASD and characterized the social behavior and the biochemical changes in the brains of the knockout mice. Results: Compared with their wild-type littermates, the Arhgef10-depleted mice showed social interaction impairment, hyperactivity, and decreased depression-like and anxiety-like behavior. Behavioral measures of learning in the Morris water maze were not affected by Arhgef10 deficiency. Moreover, neurotransmitters including serotonin, norepinephrine, and dopamine were significantly increased in different brain regions of the Arhgef10 knockout mice. In addition, monoamine oxidase A (MAO-A) decreased in several brain regions. Conclusions: These results suggest that ARHGEF10 is a candidate risk gene for ASD and that the Arhgef10 knockout model could be a tool for studying the mechanisms of neurotransmission in ASD. Trial registration: Animal studies were approved by the Institutional Animal Care and Use Committee of National Taiwan University (IACUC 20150023). Registered 1 August 2015. En ligne : http://dx.doi.org/10.1186/s13229-018-0197-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=354
in Molecular Autism > 9 (2018) . - 11p.[article] Impairment of social behaviors in Arhgef10 knockout mice [Texte imprimé et/ou numérique] / D. H. LU, Auteur ; H. M. LIAO, Auteur ; C. H. CHEN, Auteur ; H. J. TU, Auteur ; H. C. LIOU, Auteur ; S. S. GAU, Auteur ; W. M. FU, Auteur . - 11p.
Langues : Anglais (eng)
in Molecular Autism > 9 (2018) . - 11p.
Mots-clés : Arhgef10 Autism spectrum disorder Norepinephrine Serotonin Social deficits Index. décimale : PER Périodiques Résumé : Background: Impaired social interaction is one of the essential features of autism spectrum disorder (ASD). Our previous copy number variation (CNV) study discovered a novel deleted region associated with ASD. One of the genes included in the deleted region is ARHGEF10. A missense mutation of ARHGEF10 has been reported to be one of the contributing factors in several diseases of the central nervous system. However, the relationship between the loss of ARHGEF10 and the clinical symptoms of ASD is unclear. Methods: We generated Arhgef10 knockout mice as a model of ASD and characterized the social behavior and the biochemical changes in the brains of the knockout mice. Results: Compared with their wild-type littermates, the Arhgef10-depleted mice showed social interaction impairment, hyperactivity, and decreased depression-like and anxiety-like behavior. Behavioral measures of learning in the Morris water maze were not affected by Arhgef10 deficiency. Moreover, neurotransmitters including serotonin, norepinephrine, and dopamine were significantly increased in different brain regions of the Arhgef10 knockout mice. In addition, monoamine oxidase A (MAO-A) decreased in several brain regions. Conclusions: These results suggest that ARHGEF10 is a candidate risk gene for ASD and that the Arhgef10 knockout model could be a tool for studying the mechanisms of neurotransmission in ASD. Trial registration: Animal studies were approved by the Institutional Animal Care and Use Committee of National Taiwan University (IACUC 20150023). Registered 1 August 2015. En ligne : http://dx.doi.org/10.1186/s13229-018-0197-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=354 Serotonin neuron abnormalities in the BTBR mouse model of autism / Yue-Ping GUO in Autism Research, 10-1 (January 2017)
[article]
Titre : Serotonin neuron abnormalities in the BTBR mouse model of autism Type de document : Texte imprimé et/ou numérique Auteurs : Yue-Ping GUO, Auteur ; Kathryn G. COMMONS, Auteur Article en page(s) : p.66-77 Langues : Anglais (eng) Mots-clés : dorsal raphel median raphe hippocampus monoamine norepinephrine SERT swim Index. décimale : PER Périodiques Résumé : The inbred mouse strain BTBR T+ Itpr3tf/J (BTBR) is studied as a model of idiopathic autism because they are less social and more resistant to change than other strains. Forebrain serotonin receptors and the response to serotonin drugs are altered in BTBR mice, yet it remains unknown if serotonin neurons themselves are abnormal. In this study, we found that serotonin tissue content and the density of serotonin axons is reduced in the hippocampus of BTBR mice in comparison to C57BL/6J (C57) mice. This was accompanied by possible compensatory changes in serotonin neurons that were most pronounced in regions known to provide innervation to the hippocampus: the caudal dorsal raphe (B6) and the median raphe. These changes included increased numbers of serotonin neurons and hyperactivation of Fos expression. Metrics of serotonin neurons in the rostral 2/3 of the dorsal raphe and serotonin content of the prefrontal cortex were less impacted. Thus, serotonin neurons exhibit region-dependent abnormalities in the BTBR mouse that may contribute to their altered behavioral profile. En ligne : http://dx.doi.org/10.1002/aur.1665 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=302
in Autism Research > 10-1 (January 2017) . - p.66-77[article] Serotonin neuron abnormalities in the BTBR mouse model of autism [Texte imprimé et/ou numérique] / Yue-Ping GUO, Auteur ; Kathryn G. COMMONS, Auteur . - p.66-77.
Langues : Anglais (eng)
in Autism Research > 10-1 (January 2017) . - p.66-77
Mots-clés : dorsal raphel median raphe hippocampus monoamine norepinephrine SERT swim Index. décimale : PER Périodiques Résumé : The inbred mouse strain BTBR T+ Itpr3tf/J (BTBR) is studied as a model of idiopathic autism because they are less social and more resistant to change than other strains. Forebrain serotonin receptors and the response to serotonin drugs are altered in BTBR mice, yet it remains unknown if serotonin neurons themselves are abnormal. In this study, we found that serotonin tissue content and the density of serotonin axons is reduced in the hippocampus of BTBR mice in comparison to C57BL/6J (C57) mice. This was accompanied by possible compensatory changes in serotonin neurons that were most pronounced in regions known to provide innervation to the hippocampus: the caudal dorsal raphe (B6) and the median raphe. These changes included increased numbers of serotonin neurons and hyperactivation of Fos expression. Metrics of serotonin neurons in the rostral 2/3 of the dorsal raphe and serotonin content of the prefrontal cortex were less impacted. Thus, serotonin neurons exhibit region-dependent abnormalities in the BTBR mouse that may contribute to their altered behavioral profile. En ligne : http://dx.doi.org/10.1002/aur.1665 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=302