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Atypical Pupillary Light Reflex and Heart Rate Variability in Children with Autism Spectrum Disorder / Chathuri DALUWATTE in Journal of Autism and Developmental Disorders, 43-8 (August 2013)
[article]
Titre : Atypical Pupillary Light Reflex and Heart Rate Variability in Children with Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Chathuri DALUWATTE, Auteur ; Judith H. MILES, Auteur ; Shawn E. CHRIST, Auteur ; David Q. BEVERSDORF, Auteur ; T. Nicole TAKAHASHI, Auteur ; Gang YAO, Auteur Article en page(s) : p.1910-1925 Langues : Anglais (eng) Mots-clés : Pupillary light reflex Heart rate variability Autism Autonomic nervous system Index. décimale : PER Périodiques Résumé : We investigated pupillary light reflex (PLR) in 152 children with ASD, 116 typically developing (TD) children, and 36 children with non-ASD neurodevelopmental disorders (NDDs). Heart rate variability (HRV) was measured simultaneously to study potential impairments in the autonomic nervous system (ANS) associated with ASD. The results showed that the ASD group had significantly longer PLR latency, reduced relative constriction amplitude, and shorter constriction/redilation time than those of the TD group. Similar atypical PLR parameters were observed in the NDD group. A significant age effect on PLR latency was observed in children younger than 9 years in the TD group, but not in the ASD and NDD groups. Atypical HRV parameters were observed in the ASD and NDD groups. A significant negative correlation existed between the PLR constriction amplitude and average heart rate in children with an ASD, but not in children with typical development. En ligne : http://dx.doi.org/10.1007/s10803-012-1741-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=205
in Journal of Autism and Developmental Disorders > 43-8 (August 2013) . - p.1910-1925[article] Atypical Pupillary Light Reflex and Heart Rate Variability in Children with Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Chathuri DALUWATTE, Auteur ; Judith H. MILES, Auteur ; Shawn E. CHRIST, Auteur ; David Q. BEVERSDORF, Auteur ; T. Nicole TAKAHASHI, Auteur ; Gang YAO, Auteur . - p.1910-1925.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 43-8 (August 2013) . - p.1910-1925
Mots-clés : Pupillary light reflex Heart rate variability Autism Autonomic nervous system Index. décimale : PER Périodiques Résumé : We investigated pupillary light reflex (PLR) in 152 children with ASD, 116 typically developing (TD) children, and 36 children with non-ASD neurodevelopmental disorders (NDDs). Heart rate variability (HRV) was measured simultaneously to study potential impairments in the autonomic nervous system (ANS) associated with ASD. The results showed that the ASD group had significantly longer PLR latency, reduced relative constriction amplitude, and shorter constriction/redilation time than those of the TD group. Similar atypical PLR parameters were observed in the NDD group. A significant age effect on PLR latency was observed in children younger than 9 years in the TD group, but not in the ASD and NDD groups. Atypical HRV parameters were observed in the ASD and NDD groups. A significant negative correlation existed between the PLR constriction amplitude and average heart rate in children with an ASD, but not in children with typical development. En ligne : http://dx.doi.org/10.1007/s10803-012-1741-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=205 Atypical pupillary light reflex in 2–6-year-old children with autism spectrum disorders / Dinalankara M. R. DINALANKARA in Autism Research, 10-5 (May 2017)
[article]
Titre : Atypical pupillary light reflex in 2–6-year-old children with autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : Dinalankara M. R. DINALANKARA, Auteur ; Judith H. MILES, Auteur ; T. NICOLE TAKAHASHI, Auteur ; Gang YAO, Auteur Article en page(s) : p.829-838 Langues : Anglais (eng) Mots-clés : pupillary light reflex autism age latency pupil size autonomic dysfunction Index. décimale : PER Périodiques Résumé : The purpose of this study was to investigate pupillary light reflex (PLR) in 2–6-years-old children with autism spectrum disorders (ASD). A total of 117 medication-free 2–6-year-old boys participated in this study. Sixty participants were diagnosed with ASD (the “ASD group”) and the other 57 were in the control group of typical development (the “TD group”). A questionnaire was completed by the parent/guardian for assessing potential dysfunctions in the autonomic nervous system (ANS). The base pupil radius, PLR latency, and constriction time showed a significant age-related trend in both the ASD and TD groups. The base pupil size increased with age in the typically developing children, but not in the ASD group. The ASD group showed more symptoms related to ANS dysfunctions. An association between abnormal sweating with base pupil radius and PLR constriction was observed in the TD group but not the ASD group. The different association of PLR parameters with ANS dysfunction may suggest disrupted autonomic controls in children with ASD. En ligne : http://dx.doi.org/10.1002/aur.1745 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=307
in Autism Research > 10-5 (May 2017) . - p.829-838[article] Atypical pupillary light reflex in 2–6-year-old children with autism spectrum disorders [Texte imprimé et/ou numérique] / Dinalankara M. R. DINALANKARA, Auteur ; Judith H. MILES, Auteur ; T. NICOLE TAKAHASHI, Auteur ; Gang YAO, Auteur . - p.829-838.
Langues : Anglais (eng)
in Autism Research > 10-5 (May 2017) . - p.829-838
Mots-clés : pupillary light reflex autism age latency pupil size autonomic dysfunction Index. décimale : PER Périodiques Résumé : The purpose of this study was to investigate pupillary light reflex (PLR) in 2–6-years-old children with autism spectrum disorders (ASD). A total of 117 medication-free 2–6-year-old boys participated in this study. Sixty participants were diagnosed with ASD (the “ASD group”) and the other 57 were in the control group of typical development (the “TD group”). A questionnaire was completed by the parent/guardian for assessing potential dysfunctions in the autonomic nervous system (ANS). The base pupil radius, PLR latency, and constriction time showed a significant age-related trend in both the ASD and TD groups. The base pupil size increased with age in the typically developing children, but not in the ASD group. The ASD group showed more symptoms related to ANS dysfunctions. An association between abnormal sweating with base pupil radius and PLR constriction was observed in the TD group but not the ASD group. The different association of PLR parameters with ANS dysfunction may suggest disrupted autonomic controls in children with ASD. En ligne : http://dx.doi.org/10.1002/aur.1745 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=307 Development of the pupillary light reflex from 9 to 24 months: association with common autism spectrum disorder (ASD) genetic liability and 3-year ASD diagnosis / L. A. FISH in Journal of Child Psychology and Psychiatry, 62-11 (November 2021)
[article]
Titre : Development of the pupillary light reflex from 9 to 24 months: association with common autism spectrum disorder (ASD) genetic liability and 3-year ASD diagnosis Type de document : Texte imprimé et/ou numérique Auteurs : L. A. FISH, Auteur ; P. NYSTROM, Auteur ; T. GLIGA, Auteur ; A. GUI, Auteur ; Jannath BEGUM ALI, Auteur ; L. MASON, Auteur ; S. GARG, Auteur ; J. GREEN, Auteur ; M. H. JOHNSON, Auteur ; Tony CHARMAN, Auteur ; R. HARRISON, Auteur ; E. MEABURN, Auteur ; T. FALCK-YTTER, Auteur ; E. J. H. JONES, Auteur Article en page(s) : p.1308-1319 Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorder/diagnosis/genetics Humans Infant Phenotype Reflex Autism spectrum disorder infancy neurodevelopment pupillary light reflex Index. décimale : PER Périodiques Résumé : BACKGROUND: Although autism spectrum disorder (ASD) is heritable, the mechanisms through which genes contribute to symptom emergence remain unclear. Investigating candidate intermediate phenotypes such as the pupillary light reflex (PLR) prospectively from early in development could bridge genotype and behavioural phenotype. METHODS: Using eye tracking, we longitudinally measured the PLR at 9, 14 and 24 months in a sample of infants (N = 264) enriched for a family history of ASD; 27 infants received an ASD diagnosis at 3 years. We examined the 9- to 24-month developmental trajectories of PLR constriction latency (onset; ms) and amplitude (%) and explored their relation to categorical 3-year ASD outcome, polygenic liability for ASD and dimensional 3-year social affect (SA) and repetitive/restrictive behaviour (RRB) traits. Polygenic scores for ASD (PGS(ASD) ) were calculated for 190 infants. RESULTS: While infants showed a decrease in latency between 9 and 14 months, higher PGS(ASD) was associated with a smaller decrease in latency in the first year (? = -.16, 95% CI = -0.31, -0.002); infants with later ASD showed a significantly steeper decrease in latency (a putative 'catch-up') between 14 and 24 months relative to those with other outcomes (typical: ? = .54, 95% CI = 0.08, 0.99; other: ? = .53, 95% CI = 0.02, 1.04). Latency development did not associate with later dimensional variation in ASD-related traits. In contrast, change in amplitude was not related to categorical ASD or genetics, but decreasing 9- to 14-month amplitude was associated with higher SA (? = .08, 95% CI = 0.01, 0.14) and RRB (? = .05, 95% CI = 0.004, 0.11) traits. CONCLUSIONS: These findings corroborate PLR development as possible intermediate phenotypes being linked to both genetic liability and phenotypic outcomes. Future work should incorporate alternative measures (e.g. functionally informed structural and genetic measures) to test whether distinct neural mechanisms underpin PLR alterations. En ligne : http://dx.doi.org/10.1111/jcpp.13518 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=456
in Journal of Child Psychology and Psychiatry > 62-11 (November 2021) . - p.1308-1319[article] Development of the pupillary light reflex from 9 to 24 months: association with common autism spectrum disorder (ASD) genetic liability and 3-year ASD diagnosis [Texte imprimé et/ou numérique] / L. A. FISH, Auteur ; P. NYSTROM, Auteur ; T. GLIGA, Auteur ; A. GUI, Auteur ; Jannath BEGUM ALI, Auteur ; L. MASON, Auteur ; S. GARG, Auteur ; J. GREEN, Auteur ; M. H. JOHNSON, Auteur ; Tony CHARMAN, Auteur ; R. HARRISON, Auteur ; E. MEABURN, Auteur ; T. FALCK-YTTER, Auteur ; E. J. H. JONES, Auteur . - p.1308-1319.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 62-11 (November 2021) . - p.1308-1319
Mots-clés : Autism Spectrum Disorder/diagnosis/genetics Humans Infant Phenotype Reflex Autism spectrum disorder infancy neurodevelopment pupillary light reflex Index. décimale : PER Périodiques Résumé : BACKGROUND: Although autism spectrum disorder (ASD) is heritable, the mechanisms through which genes contribute to symptom emergence remain unclear. Investigating candidate intermediate phenotypes such as the pupillary light reflex (PLR) prospectively from early in development could bridge genotype and behavioural phenotype. METHODS: Using eye tracking, we longitudinally measured the PLR at 9, 14 and 24 months in a sample of infants (N = 264) enriched for a family history of ASD; 27 infants received an ASD diagnosis at 3 years. We examined the 9- to 24-month developmental trajectories of PLR constriction latency (onset; ms) and amplitude (%) and explored their relation to categorical 3-year ASD outcome, polygenic liability for ASD and dimensional 3-year social affect (SA) and repetitive/restrictive behaviour (RRB) traits. Polygenic scores for ASD (PGS(ASD) ) were calculated for 190 infants. RESULTS: While infants showed a decrease in latency between 9 and 14 months, higher PGS(ASD) was associated with a smaller decrease in latency in the first year (? = -.16, 95% CI = -0.31, -0.002); infants with later ASD showed a significantly steeper decrease in latency (a putative 'catch-up') between 14 and 24 months relative to those with other outcomes (typical: ? = .54, 95% CI = 0.08, 0.99; other: ? = .53, 95% CI = 0.02, 1.04). Latency development did not associate with later dimensional variation in ASD-related traits. In contrast, change in amplitude was not related to categorical ASD or genetics, but decreasing 9- to 14-month amplitude was associated with higher SA (? = .08, 95% CI = 0.01, 0.14) and RRB (? = .05, 95% CI = 0.004, 0.11) traits. CONCLUSIONS: These findings corroborate PLR development as possible intermediate phenotypes being linked to both genetic liability and phenotypic outcomes. Future work should incorporate alternative measures (e.g. functionally informed structural and genetic measures) to test whether distinct neural mechanisms underpin PLR alterations. En ligne : http://dx.doi.org/10.1111/jcpp.13518 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=456 Pupil size and pupillary light reflex in early infancy: heritability and link to genetic liability to schizophrenia / Ana Maria PORTUGAL in Journal of Child Psychology and Psychiatry, 63-9 (September 2022)
[article]
Titre : Pupil size and pupillary light reflex in early infancy: heritability and link to genetic liability to schizophrenia Type de document : Texte imprimé et/ou numérique Auteurs : Ana Maria PORTUGAL, Auteur ; Mark J. TAYLOR, Auteur ; Charlotte VIKTORSSON, Auteur ; Pär NYSTROM, Auteur ; Danyang LI, Auteur ; Kristiina TAMMIMIES, Auteur ; Angelica RONALD, Auteur ; Terje FALCK-YTTER, Auteur Article en page(s) : p.1068-1077 Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorder Depressive Disorder, Major Humans Infant Pupil/physiology Reflex, Pupillary/physiology Schizophrenia/genetics Pupillometry infancy polygenic risk scores pupillary light reflex schizophrenia twin design Index. décimale : PER Périodiques Résumé : BACKGROUND: Measures based on pupillometry, such as the pupillary light reflex (PLR) and baseline pupil size, reflect physiological responses linked to specific neural circuits that have been implicated as atypical in some psychiatric and neurodevelopmental conditions. METHODS: We investigated the contribution of genetic and environmental factors to the baseline pupil size and the PLR in 510 infant twins assessed at 5months of age (281 monozygotic and 229 dizygotic pairs), and its associations with common genetic variants associated with neurodevelopmental (autism spectrum disorder and attention deficit hyperactivity disorder) and mental health (bipolar disorder, major depressive disorder and schizophrenia) conditions using genome-wide polygenic scores (GPSs). RESULTS: Univariate twin modelling showed high heritability at 5months for both pupil size (h(2) =.64) and constriction in response to light (h(2) =.62), and bivariate twin modeling indicated substantial independence between the genetic factors influencing each (r(G) =.38). A statistically significant positive association between infant tonic pupil size and the GPS for schizophrenia was found (Î2=.15, p=.024), while there was no significant association with the GPS for autism or any other GPSs. CONCLUSIONS: This study shows that some pupil measures are highly heritable in early infancy, although substantially independent in their genetic etiologies, and associated with common genetic variants linked to schizophrenia. It illustrates how genetically informed studies of infants may help us understand early physiological responses associated with psychiatric disorders which emerge much later in life. En ligne : http://dx.doi.org/10.1111/jcpp.13564 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=486
in Journal of Child Psychology and Psychiatry > 63-9 (September 2022) . - p.1068-1077[article] Pupil size and pupillary light reflex in early infancy: heritability and link to genetic liability to schizophrenia [Texte imprimé et/ou numérique] / Ana Maria PORTUGAL, Auteur ; Mark J. TAYLOR, Auteur ; Charlotte VIKTORSSON, Auteur ; Pär NYSTROM, Auteur ; Danyang LI, Auteur ; Kristiina TAMMIMIES, Auteur ; Angelica RONALD, Auteur ; Terje FALCK-YTTER, Auteur . - p.1068-1077.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 63-9 (September 2022) . - p.1068-1077
Mots-clés : Autism Spectrum Disorder Depressive Disorder, Major Humans Infant Pupil/physiology Reflex, Pupillary/physiology Schizophrenia/genetics Pupillometry infancy polygenic risk scores pupillary light reflex schizophrenia twin design Index. décimale : PER Périodiques Résumé : BACKGROUND: Measures based on pupillometry, such as the pupillary light reflex (PLR) and baseline pupil size, reflect physiological responses linked to specific neural circuits that have been implicated as atypical in some psychiatric and neurodevelopmental conditions. METHODS: We investigated the contribution of genetic and environmental factors to the baseline pupil size and the PLR in 510 infant twins assessed at 5months of age (281 monozygotic and 229 dizygotic pairs), and its associations with common genetic variants associated with neurodevelopmental (autism spectrum disorder and attention deficit hyperactivity disorder) and mental health (bipolar disorder, major depressive disorder and schizophrenia) conditions using genome-wide polygenic scores (GPSs). RESULTS: Univariate twin modelling showed high heritability at 5months for both pupil size (h(2) =.64) and constriction in response to light (h(2) =.62), and bivariate twin modeling indicated substantial independence between the genetic factors influencing each (r(G) =.38). A statistically significant positive association between infant tonic pupil size and the GPS for schizophrenia was found (Î2=.15, p=.024), while there was no significant association with the GPS for autism or any other GPSs. CONCLUSIONS: This study shows that some pupil measures are highly heritable in early infancy, although substantially independent in their genetic etiologies, and associated with common genetic variants linked to schizophrenia. It illustrates how genetically informed studies of infants may help us understand early physiological responses associated with psychiatric disorders which emerge much later in life. En ligne : http://dx.doi.org/10.1111/jcpp.13564 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=486