Aberrant resting-state functional connectivity in limbic and salience networks in treatment-naïve clinically depressed adolescents / Justine Nienke PANNEKOEK in Journal of Child Psychology and Psychiatry, 55-12 (December 2014)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 55-12 (December 2014) . - p.1317-1327 Titre : Aberrant resting-state functional connectivity in limbic and salience networks in treatment-naïve clinically depressed adolescents Type de document : Texte imprimé et/ou numérique Auteurs : Justine Nienke PANNEKOEK, Auteur ; S. J. A. VAN DER WERFF, Auteur ; Paul H. F. MEENS, Auteur ; Bianca G. VAN DEN BULK, Auteur ; Dietsje D. JOLLES, Auteur ; Ilya M. VEER, Auteur ; Natasja D. J. VAN LANG, Auteur ; Serge A. R. B. ROMBOUTS, Auteur ; Nic J. A. VAN DER WEE, Auteur ; Robert R. J. M. VERMEIREN, Auteur Article en page(s) : p.1317-1327 Langues : Anglais (eng) Mots-clés : Resting-state  adolescents  depression  anxiety Index. décimale : PER Périodiques Résumé : Background Depression is prevalent and typically has its onset in adolescence. Resting-state fMRI could help create a better understanding of the underlying neurobiological mechanisms during this critical period. In this study, resting-state functional connectivity (RSFC) is examined using seed regions-of-interest (ROIs) associated with three networks: the limbic network, the default mode network (DMN) and the salience network. Methods Twenty-six treatment-naïve, clinically depressed adolescents of whom 18 had comorbid anxiety, and 26 pair-wise matched healthy controls underwent resting-state fMRI. The three networks were investigated using a seed-based ROI approach with seeds in the bilateral amygdala (limbic network), bilateral dorsal anterior cingulate cortex (dACC; salience network) and bilateral posterior cingulate cortex (default mode network). Results Compared to healthy controls, clinically depressed adolescents showed increased RSFC of the left amygdala with right parietal cortical areas, and decreased right amygdala RSFC with left frontal cortical areas including the ACC, as well as with right occipito-parietal areas. The bilateral dACC showed decreased RSFC with the right middle frontal gyrus, frontal pole, and inferior frontal gyrus in clinically depressed adolescents. No abnormalities in DMN RSFC were found, and differences in RSFC did not correlate with clinical measures. Conclusions The aberrant RSFC of the amygdala network and the dACC network may be related to altered emotion processing and regulation in depressed adolescents. Our results provide new insights into RSFC in clinically depressed adolescents and future models on adolescent depression may include abnormalities in the connectivity of salience network. En ligne : http://dx.doi.org/10.1111/jcpp.12266 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=243 [article] Aberrant resting-state functional connectivity in limbic and salience networks in treatment-naïve clinically depressed adolescents [Texte imprimé et/ou numérique] / Justine Nienke PANNEKOEK, Auteur ; S. J. A. VAN DER WERFF, Auteur ; Paul H. F. MEENS, Auteur ; Bianca G. VAN DEN BULK, Auteur ; Dietsje D. JOLLES, Auteur ; Ilya M. VEER, Auteur ; Natasja D. J. VAN LANG, Auteur ; Serge A. R. B. ROMBOUTS, Auteur ; Nic J. A. VAN DER WEE, Auteur ; Robert R. J. M. VERMEIREN, Auteur . - p.1317-1327. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 55-12 (December 2014) . - p.1317-1327 Mots-clés : Resting-state  adolescents  depression  anxiety Index. décimale : PER Périodiques Résumé : Background Depression is prevalent and typically has its onset in adolescence. Resting-state fMRI could help create a better understanding of the underlying neurobiological mechanisms during this critical period. In this study, resting-state functional connectivity (RSFC) is examined using seed regions-of-interest (ROIs) associated with three networks: the limbic network, the default mode network (DMN) and the salience network. Methods Twenty-six treatment-naïve, clinically depressed adolescents of whom 18 had comorbid anxiety, and 26 pair-wise matched healthy controls underwent resting-state fMRI. The three networks were investigated using a seed-based ROI approach with seeds in the bilateral amygdala (limbic network), bilateral dorsal anterior cingulate cortex (dACC; salience network) and bilateral posterior cingulate cortex (default mode network). Results Compared to healthy controls, clinically depressed adolescents showed increased RSFC of the left amygdala with right parietal cortical areas, and decreased right amygdala RSFC with left frontal cortical areas including the ACC, as well as with right occipito-parietal areas. The bilateral dACC showed decreased RSFC with the right middle frontal gyrus, frontal pole, and inferior frontal gyrus in clinically depressed adolescents. No abnormalities in DMN RSFC were found, and differences in RSFC did not correlate with clinical measures. Conclusions The aberrant RSFC of the amygdala network and the dACC network may be related to altered emotion processing and regulation in depressed adolescents. Our results provide new insights into RSFC in clinically depressed adolescents and future models on adolescent depression may include abnormalities in the connectivity of salience network. En ligne : http://dx.doi.org/10.1111/jcpp.12266 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=243

Structural and functional connectivity in children and adolescents with and without attention deficit/hyperactivity disorder / Dienke J. BOS in Journal of Child Psychology and Psychiatry, 58-7 (July 2017)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 58-7 (July 2017) . - p.810-818 Titre : Structural and functional connectivity in children and adolescents with and without attention deficit/hyperactivity disorder Type de document : Texte imprimé et/ou numérique Auteurs : Dienke J. BOS, Auteur ; Bob ORANJE, Auteur ; Michelle ACHTERBERG, Auteur ; Chantal VLASKAMP, Auteur ; Sara AMBROSINO, Auteur ; Marcel A. DE REUS, Auteur ; Martijn P. VAN DEN HEUVEL, Auteur ; Serge A. R. B. ROMBOUTS, Auteur ; Sarah DURSTON, Auteur Article en page(s) : p.810-818 Langues : Anglais (eng) Mots-clés : Attention deficit/hyperactivity disorder  functional connectivity  structural connectivity  Default Mode Network  developmental delay Index. décimale : PER Périodiques Résumé : Background Attention deficit/hyperactivity disorder (ADHD) has frequently been associated with changes in resting-state functional connectivity, and decreased white matter (WM) integrity. In the current study, we investigated functional connectivity within Default Mode and frontal control resting-state networks (RSNs) in children with and without ADHD. We hypothesized the RSNs of interest would show a pattern of impaired functional integration and segregation and corresponding changes in WM structure. Methods Resting-state fMRI and diffusion-weighted imaging data were acquired from 35 participants with ADHD and 36 matched typically developing peers, aged 6 through 18 years. Functional connectivity was assessed using independent component analysis. Network topology and WM connectivity were further investigated using graph theoretical measures and tract-based spatial statistics (TBSS). Results Resting-state fMRI analyses showed increased functional connectivity in right inferior frontal gyrus (IFG), and bilateral medial prefrontal cortex (mPFC) within the Default Mode and frontal control networks. Furthermore, a more diffuse spatial pattern of functional connectivity was found in children with ADHD. We found no group differences in structural connectivity as assessed with TBSS or graph theoretical measures. Conclusions Resting-state networks show a more diffuse pattern of connectivity in children with ADHD. The increases in functional connectivity in right IFG and bilateral mPFC in children with ADHD may reflect reduced or delayed functional segregation of prefrontal brain regions. As these functional changes were not accompanied by changes in WM, they may precede the development of the frequently reported changes in WM structure. En ligne : http://dx.doi.org/10.1111/jcpp.12712 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=316 [article] Structural and functional connectivity in children and adolescents with and without attention deficit/hyperactivity disorder [Texte imprimé et/ou numérique] / Dienke J. BOS, Auteur ; Bob ORANJE, Auteur ; Michelle ACHTERBERG, Auteur ; Chantal VLASKAMP, Auteur ; Sara AMBROSINO, Auteur ; Marcel A. DE REUS, Auteur ; Martijn P. VAN DEN HEUVEL, Auteur ; Serge A. R. B. ROMBOUTS, Auteur ; Sarah DURSTON, Auteur . - p.810-818. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 58-7 (July 2017) . - p.810-818 Mots-clés : Attention deficit/hyperactivity disorder  functional connectivity  structural connectivity  Default Mode Network  developmental delay Index. décimale : PER Périodiques Résumé : Background Attention deficit/hyperactivity disorder (ADHD) has frequently been associated with changes in resting-state functional connectivity, and decreased white matter (WM) integrity. In the current study, we investigated functional connectivity within Default Mode and frontal control resting-state networks (RSNs) in children with and without ADHD. We hypothesized the RSNs of interest would show a pattern of impaired functional integration and segregation and corresponding changes in WM structure. Methods Resting-state fMRI and diffusion-weighted imaging data were acquired from 35 participants with ADHD and 36 matched typically developing peers, aged 6 through 18 years. Functional connectivity was assessed using independent component analysis. Network topology and WM connectivity were further investigated using graph theoretical measures and tract-based spatial statistics (TBSS). Results Resting-state fMRI analyses showed increased functional connectivity in right inferior frontal gyrus (IFG), and bilateral medial prefrontal cortex (mPFC) within the Default Mode and frontal control networks. Furthermore, a more diffuse spatial pattern of functional connectivity was found in children with ADHD. We found no group differences in structural connectivity as assessed with TBSS or graph theoretical measures. Conclusions Resting-state networks show a more diffuse pattern of connectivity in children with ADHD. The increases in functional connectivity in right IFG and bilateral mPFC in children with ADHD may reflect reduced or delayed functional segregation of prefrontal brain regions. As these functional changes were not accompanied by changes in WM, they may precede the development of the frequently reported changes in WM structure. En ligne : http://dx.doi.org/10.1111/jcpp.12712 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=316

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