Aberrant brain network topology in youth with a familial risk for bipolar disorder: a task-based fMRI connectome study / Kun QIN ; Luis R. PATINO ; Maxwell J. TALLMAN ; Du LEI ; Lu LU ; Wenbin LI ; Thomas J. BLOM ; Kaitlyn M. BRUNS ; Jeffrey A. WELGE ; Jeffrey R. STRAWN ; Qiyong GONG ; John A. SWEENEY ; Manpreet K. SINGH ; Melissa P. DELBELLO in Journal of Child Psychology and Psychiatry, 65-8 (August 2024)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 65-8 (August 2024) . - p.1072-1086 Titre : Aberrant brain network topology in youth with a familial risk for bipolar disorder: a task-based fMRI connectome study Type de document : texte imprimé Auteurs : Kun QIN, Auteur ; Luis R. PATINO, Auteur ; Maxwell J. TALLMAN, Auteur ; Du LEI, Auteur ; Lu LU, Auteur ; Wenbin LI, Auteur ; Thomas J. BLOM, Auteur ; Kaitlyn M. BRUNS, Auteur ; Jeffrey A. WELGE, Auteur ; Jeffrey R. STRAWN, Auteur ; Qiyong GONG, Auteur ; John A. SWEENEY, Auteur ; Manpreet K. SINGH, Auteur ; Melissa P. DELBELLO, Auteur Article en page(s) : p.1072-1086 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Background Youth with a family history of bipolar disorder (BD) may be at increased risk for mood disorders and for developing side effects after antidepressant exposure. The neurobiological basis of these risks remains poorly understood. We aimed to identify biomarkers underlying risk by characterizing abnormalities in the brain connectome of symptomatic youth at familial risk for BD. Methods Depressed and/or anxious youth (n = 119, age = 14.9+1.6 years) with a family history of BD but no prior antidepressant exposure and typically developing controls (n = 57, age = 14.8+1.7 years) received functional magnetic resonance imaging (fMRI) during an emotional continuous performance task. A generalized psychophysiological interaction (gPPI) analysis was performed to compare their brain connectome patterns, followed by machine learning of topological metrics. Results High-risk youth showed weaker connectivity patterns that were mainly located in the default mode network (DMN) (network weight = 50.1%) relative to controls, and connectivity patterns derived from the visual network (VN) constituted the largest proportion of aberrant stronger pairs (network weight = 54.9%). Global local efficiency (Elocal, p = .022) and clustering coefficient (Cp, p = .029) and nodal metrics of the right superior frontal gyrus (SFG) (Elocal: p < .001; Cp: p = .001) in the high-risk group were significantly higher than those in healthy subjects, and similar patterns were also found in the left insula (degree: p = .004; betweenness: p = .005; age-by-group interaction, p = .038) and right hippocampus (degree: p = .003; betweenness: p = .003). The case-control classifier achieved a cross-validation accuracy of 78.4%. Conclusions Our findings of abnormal connectome organization in the DMN and VN may advance mechanistic understanding of risk for BD. Neuroimaging biomarkers of increased network segregation in the SFG and altered topological centrality in the insula and hippocampus in broader limbic systems may be used to target interventions tailored to mitigate the underlying risk of brain abnormalities in these at-risk youth. En ligne : https://doi.org/10.1111/jcpp.13946 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=532 [article] Aberrant brain network topology in youth with a familial risk for bipolar disorder: a task-based fMRI connectome study [texte imprimé] / Kun QIN, Auteur ; Luis R. PATINO, Auteur ; Maxwell J. TALLMAN, Auteur ; Du LEI, Auteur ; Lu LU, Auteur ; Wenbin LI, Auteur ; Thomas J. BLOM, Auteur ; Kaitlyn M. BRUNS, Auteur ; Jeffrey A. WELGE, Auteur ; Jeffrey R. STRAWN, Auteur ; Qiyong GONG, Auteur ; John A. SWEENEY, Auteur ; Manpreet K. SINGH, Auteur ; Melissa P. DELBELLO, Auteur . - p.1072-1086. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 65-8 (August 2024) . - p.1072-1086 Index. décimale : PER Périodiques Résumé : Background Youth with a family history of bipolar disorder (BD) may be at increased risk for mood disorders and for developing side effects after antidepressant exposure. The neurobiological basis of these risks remains poorly understood. We aimed to identify biomarkers underlying risk by characterizing abnormalities in the brain connectome of symptomatic youth at familial risk for BD. Methods Depressed and/or anxious youth (n = 119, age = 14.9+1.6 years) with a family history of BD but no prior antidepressant exposure and typically developing controls (n = 57, age = 14.8+1.7 years) received functional magnetic resonance imaging (fMRI) during an emotional continuous performance task. A generalized psychophysiological interaction (gPPI) analysis was performed to compare their brain connectome patterns, followed by machine learning of topological metrics. Results High-risk youth showed weaker connectivity patterns that were mainly located in the default mode network (DMN) (network weight = 50.1%) relative to controls, and connectivity patterns derived from the visual network (VN) constituted the largest proportion of aberrant stronger pairs (network weight = 54.9%). Global local efficiency (Elocal, p = .022) and clustering coefficient (Cp, p = .029) and nodal metrics of the right superior frontal gyrus (SFG) (Elocal: p < .001; Cp: p = .001) in the high-risk group were significantly higher than those in healthy subjects, and similar patterns were also found in the left insula (degree: p = .004; betweenness: p = .005; age-by-group interaction, p = .038) and right hippocampus (degree: p = .003; betweenness: p = .003). The case-control classifier achieved a cross-validation accuracy of 78.4%. Conclusions Our findings of abnormal connectome organization in the DMN and VN may advance mechanistic understanding of risk for BD. Neuroimaging biomarkers of increased network segregation in the SFG and altered topological centrality in the insula and hippocampus in broader limbic systems may be used to target interventions tailored to mitigate the underlying risk of brain abnormalities in these at-risk youth. En ligne : https://doi.org/10.1111/jcpp.13946 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=532

Psychostimulant treatment uniquely reduces left uncinate fasciculus microstructural integrity in ADHD youth with a familial risk for bipolar I disorder: a 12-week DTI study / Kun QIN in Journal of Child Psychology and Psychiatry, 67-5 (May 2026)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 67-5 (May 2026) . - p.696-706 Titre : Psychostimulant treatment uniquely reduces left uncinate fasciculus microstructural integrity in ADHD youth with a familial risk for bipolar I disorder: a 12-week DTI study Type de document : texte imprimé Auteurs : Kun QIN, Auteur ; Wen CHEN, Auteur ; Du LEI, Auteur ; Ziyu ZHU, Auteur ; Maxwell J. TALLMAN, Auteur ; Nanfang PAN, Auteur ; Lisha ZHANG, Auteur ; Luis RODRIGO PATINO, Auteur ; John A. SWEENEY, Auteur ; Melissa P. DELBELLO, Auteur ; Robert K. MCNAMARA, Auteur Article en page(s) : p.696-706 Langues : Anglais (eng) Mots-clés : Attention-deficit/hyperactivity disorder  bipolar I disorder  familial risk  stimulants  adolescent Index. décimale : PER Périodiques Résumé : Background Bipolar I disorder (BD) is associated with reduced white matter microstructural integrity in the uncinate fasciculus (UF), a primary fiber tract connecting frontolimbic systems. Although familial history for BD, attention-deficit/hyperactivity disorder (ADHD), and psychostimulants are important risk factors implicated in BD pathoetiology, their impact on UF microstructure remains poorly understood. Methods This diffusion tensor imaging study investigated UF microstructural integrity prior to and following 12?weeks of psychostimulant treatment in ADHD youth with (?high-risk?, HR) and without (?low-risk?, LR) a first-degree relative with BD. Healthy controls were included for comparative purposes. LR youth received 12-week open-label mixed amphetamine salts-extended release (MAS-XR), and HR youth were randomized to either MAS-XR or placebo (PLA). Bilateral UF fractional anisotropy (FA) and axial diffusivity (AD) were assessed using automated fiber quantification. Results A total of 137 participants were included in the analyses. At baseline, there were no significant group differences in bilateral UF microstructural metrics. Following 12-week MAS-XR treatment, significant group-by-time interactions were found for left UF FA and AD between HR-MAS and LR-MAS, as well as for left UF FA between HR-MAS and HR-PLA. Specifically, left UF FA and UF AD decreased significantly in HR-MAS but remained unchanged in LR-MAS and HR-PLA groups. At week 12, left UF FA was lower in HR-MAS relative to HC but not in LR-MAS or HR-PLA. Segment-wise analyses further revealed that UF microstructural changes in the HR-MAS group were localized to the anterior segments. Conclusions These results suggest that HR-ADHD youth are uniquely vulnerable to reductions in left UF microstructural integrity following psychostimulant treatment, suggesting potential relevance to BD pathoprogression. En ligne : https://doi.org/10.1111/jcpp.70053 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=586 [article] Psychostimulant treatment uniquely reduces left uncinate fasciculus microstructural integrity in ADHD youth with a familial risk for bipolar I disorder: a 12-week DTI study [texte imprimé] / Kun QIN, Auteur ; Wen CHEN, Auteur ; Du LEI, Auteur ; Ziyu ZHU, Auteur ; Maxwell J. TALLMAN, Auteur ; Nanfang PAN, Auteur ; Lisha ZHANG, Auteur ; Luis RODRIGO PATINO, Auteur ; John A. SWEENEY, Auteur ; Melissa P. DELBELLO, Auteur ; Robert K. MCNAMARA, Auteur . - p.696-706. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 67-5 (May 2026) . - p.696-706 Mots-clés : Attention-deficit/hyperactivity disorder  bipolar I disorder  familial risk  stimulants  adolescent Index. décimale : PER Périodiques Résumé : Background Bipolar I disorder (BD) is associated with reduced white matter microstructural integrity in the uncinate fasciculus (UF), a primary fiber tract connecting frontolimbic systems. Although familial history for BD, attention-deficit/hyperactivity disorder (ADHD), and psychostimulants are important risk factors implicated in BD pathoetiology, their impact on UF microstructure remains poorly understood. Methods This diffusion tensor imaging study investigated UF microstructural integrity prior to and following 12?weeks of psychostimulant treatment in ADHD youth with (?high-risk?, HR) and without (?low-risk?, LR) a first-degree relative with BD. Healthy controls were included for comparative purposes. LR youth received 12-week open-label mixed amphetamine salts-extended release (MAS-XR), and HR youth were randomized to either MAS-XR or placebo (PLA). Bilateral UF fractional anisotropy (FA) and axial diffusivity (AD) were assessed using automated fiber quantification. Results A total of 137 participants were included in the analyses. At baseline, there were no significant group differences in bilateral UF microstructural metrics. Following 12-week MAS-XR treatment, significant group-by-time interactions were found for left UF FA and AD between HR-MAS and LR-MAS, as well as for left UF FA between HR-MAS and HR-PLA. Specifically, left UF FA and UF AD decreased significantly in HR-MAS but remained unchanged in LR-MAS and HR-PLA groups. At week 12, left UF FA was lower in HR-MAS relative to HC but not in LR-MAS or HR-PLA. Segment-wise analyses further revealed that UF microstructural changes in the HR-MAS group were localized to the anterior segments. Conclusions These results suggest that HR-ADHD youth are uniquely vulnerable to reductions in left UF microstructural integrity following psychostimulant treatment, suggesting potential relevance to BD pathoprogression. En ligne : https://doi.org/10.1111/jcpp.70053 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=586

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