Annual Research Review: Pediatric posttraumatic stress disorder from a neurodevelopmental network perspective / Carl F. WEEMS in Journal of Child Psychology and Psychiatry, 60-4 (April 2019)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 60-4 (April 2019) . - p.395-408 Titre : Annual Research Review: Pediatric posttraumatic stress disorder from a neurodevelopmental network perspective Type de document : texte imprimé Auteurs : Carl F. WEEMS, Auteur ; Justin D. RUSSELL, Auteur ; Erin L. NEILL, Auteur ; Bethany H. MCCURDY, Auteur Article en page(s) : p.395-408 Langues : Anglais (eng) Mots-clés : Posttraumatic stress disorder  brain development  functional connectivity  network analysis  structural connectivity Index. décimale : PER Périodiques Résumé : BACKGROUND: Experiencing traumatic stress is common and may lead to posttraumatic stress disorder (PTSD) in a number of children and adolescents. Research using advanced imaging techniques is beginning to elucidate some of the neurobiological correlates of the traumatic stress response in youth. METHODS: This paper summarizes the emerging network perspective of PTSD symptoms and reviews brain imaging research emphasizing structural and functional connectivity studies that employ magnetic resonance imaging techniques in pediatric samples. RESULTS: Differences in structural connections and distributed functional networks such as the salience, default mode, and central executive networks are associated with traumatic and severe early life stress. The role of development has been relatively underappreciated in extant studies though there is evidence that critical brain regions as well as the structural and functional networks implicated undergo significant change in childhood and these typical developmental differences may be affected by traumatic stress. CONCLUSIONS: Future research will benefit from adopting a truly developmental approach that considers children's growth as a meaningful effect (rather than simply a covariate) interacting with traumatic stress to predict disruptions in the anatomical, functional, and connective aspects of brain systems thought to underlie the network of PTSD symptoms. Linking symptom networks with neurodevelopmental network models may be a promising avenue for future work. En ligne : https://dx.doi.org/10.1111/jcpp.12996 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=388 [article] Annual Research Review: Pediatric posttraumatic stress disorder from a neurodevelopmental network perspective [texte imprimé] / Carl F. WEEMS, Auteur ; Justin D. RUSSELL, Auteur ; Erin L. NEILL, Auteur ; Bethany H. MCCURDY, Auteur . - p.395-408. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 60-4 (April 2019) . - p.395-408 Mots-clés : Posttraumatic stress disorder  brain development  functional connectivity  network analysis  structural connectivity Index. décimale : PER Périodiques Résumé : BACKGROUND: Experiencing traumatic stress is common and may lead to posttraumatic stress disorder (PTSD) in a number of children and adolescents. Research using advanced imaging techniques is beginning to elucidate some of the neurobiological correlates of the traumatic stress response in youth. METHODS: This paper summarizes the emerging network perspective of PTSD symptoms and reviews brain imaging research emphasizing structural and functional connectivity studies that employ magnetic resonance imaging techniques in pediatric samples. RESULTS: Differences in structural connections and distributed functional networks such as the salience, default mode, and central executive networks are associated with traumatic and severe early life stress. The role of development has been relatively underappreciated in extant studies though there is evidence that critical brain regions as well as the structural and functional networks implicated undergo significant change in childhood and these typical developmental differences may be affected by traumatic stress. CONCLUSIONS: Future research will benefit from adopting a truly developmental approach that considers children's growth as a meaningful effect (rather than simply a covariate) interacting with traumatic stress to predict disruptions in the anatomical, functional, and connective aspects of brain systems thought to underlie the network of PTSD symptoms. Linking symptom networks with neurodevelopmental network models may be a promising avenue for future work. En ligne : https://dx.doi.org/10.1111/jcpp.12996 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=388

Neurogenetic mechanisms of risk for ADHD: Examining associations of polygenic scores and brain volumes in a population cohort / Quanfa HE in Journal of Neurodevelopmental Disorders, 15 (2023)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 15 (2023) Titre : Neurogenetic mechanisms of risk for ADHD: Examining associations of polygenic scores and brain volumes in a population cohort Type de document : texte imprimé Auteurs : Quanfa HE, Auteur ; Taylor J. KEDING, Auteur ; Qi ZHANG, Auteur ; Jiacheng MIAO, Auteur ; Justin D. RUSSELL, Auteur ; Ryan J. HERRINGA, Auteur ; Qiongshi LU, Auteur ; Brittany G. TRAVERS, Auteur ; James J. LI, Auteur Langues : Anglais (eng) Mots-clés : Adolescent  Humans  Attention Deficit Disorder with Hyperactivity/genetics  Neurosciences  Brain/diagnostic imaging  Cerebral Cortex  Gray Matter/diagnostic imaging  Adhd  Brain volume  Functional annotation  Multiple mediation  Polygenic scores Index. décimale : PER Périodiques Résumé : BACKGROUND: ADHD polygenic scores (PGSs) have been previously shown to predict ADHD outcomes in several studies. However, ADHD PGSs are typically correlated with ADHD but not necessarily reflective of causal mechanisms. More research is needed to elucidate the neurobiological mechanisms underlying ADHD. We leveraged functional annotation information into an ADHD PGS to (1) improve the prediction performance over a non-annotated ADHD PGS and (2) test whether volumetric variation in brain regions putatively associated with ADHD mediate the association between PGSs and ADHD outcomes. METHODS: Data were from the Philadelphia Neurodevelopmental Cohort (N = 555). Multiple mediation models were tested to examine the indirect effects of two ADHD PGSs-one using a traditional computation involving clumping and thresholding and another using a functionally annotated approach (i.e., AnnoPred)-on ADHD inattention (IA) and hyperactivity-impulsivity (HI) symptoms, via gray matter volumes in the cingulate gyrus, angular gyrus, caudate, dorsolateral prefrontal cortex (DLPFC), and inferior temporal lobe. RESULTS: A direct effect was detected between the AnnoPred ADHD PGS and IA symptoms in adolescents. No indirect effects via brain volumes were detected for either IA or HI symptoms. However, both ADHD PGSs were negatively associated with the DLPFC. CONCLUSIONS: The AnnoPred ADHD PGS was a more developmentally specific predictor of adolescent IA symptoms compared to the traditional ADHD PGS. However, brain volumes did not mediate the effects of either a traditional or AnnoPred ADHD PGS on ADHD symptoms, suggesting that we may still be underpowered in clarifying brain-based biomarkers for ADHD using genetic measures. En ligne : https://dx.doi.org/10.1186/s11689-023-09498-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=575 [article] Neurogenetic mechanisms of risk for ADHD: Examining associations of polygenic scores and brain volumes in a population cohort [texte imprimé] / Quanfa HE, Auteur ; Taylor J. KEDING, Auteur ; Qi ZHANG, Auteur ; Jiacheng MIAO, Auteur ; Justin D. RUSSELL, Auteur ; Ryan J. HERRINGA, Auteur ; Qiongshi LU, Auteur ; Brittany G. TRAVERS, Auteur ; James J. LI, Auteur. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 15 (2023) Mots-clés : Adolescent  Humans  Attention Deficit Disorder with Hyperactivity/genetics  Neurosciences  Brain/diagnostic imaging  Cerebral Cortex  Gray Matter/diagnostic imaging  Adhd  Brain volume  Functional annotation  Multiple mediation  Polygenic scores Index. décimale : PER Périodiques Résumé : BACKGROUND: ADHD polygenic scores (PGSs) have been previously shown to predict ADHD outcomes in several studies. However, ADHD PGSs are typically correlated with ADHD but not necessarily reflective of causal mechanisms. More research is needed to elucidate the neurobiological mechanisms underlying ADHD. We leveraged functional annotation information into an ADHD PGS to (1) improve the prediction performance over a non-annotated ADHD PGS and (2) test whether volumetric variation in brain regions putatively associated with ADHD mediate the association between PGSs and ADHD outcomes. METHODS: Data were from the Philadelphia Neurodevelopmental Cohort (N = 555). Multiple mediation models were tested to examine the indirect effects of two ADHD PGSs-one using a traditional computation involving clumping and thresholding and another using a functionally annotated approach (i.e., AnnoPred)-on ADHD inattention (IA) and hyperactivity-impulsivity (HI) symptoms, via gray matter volumes in the cingulate gyrus, angular gyrus, caudate, dorsolateral prefrontal cortex (DLPFC), and inferior temporal lobe. RESULTS: A direct effect was detected between the AnnoPred ADHD PGS and IA symptoms in adolescents. No indirect effects via brain volumes were detected for either IA or HI symptoms. However, both ADHD PGSs were negatively associated with the DLPFC. CONCLUSIONS: The AnnoPred ADHD PGS was a more developmentally specific predictor of adolescent IA symptoms compared to the traditional ADHD PGS. However, brain volumes did not mediate the effects of either a traditional or AnnoPred ADHD PGS on ADHD symptoms, suggesting that we may still be underpowered in clarifying brain-based biomarkers for ADHD using genetic measures. En ligne : https://dx.doi.org/10.1186/s11689-023-09498-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=575

---

1 (1 - 2 / 2) Par page : 25 50 100 200