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Longitudinal structural connectomic and rich-club analysis in adolescent mTBI reveals persistent, distributed brain alterations acutely through to one year post-injury.
Chung, Ai Wern; Mannix, Rebekah; Feldman, Henry A; Grant, P Ellen; Im, Kiho.
Afiliação
  • Chung AW; Fetal Neonatal Neuroimaging and Developmental Science Center, Division of Newborn Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA. aiwern.chung@childrens.harvard.edu.
  • Mannix R; Division of Emergency Medicine, Brain Injury Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
  • Feldman HA; Institutional Centers for Clinical and Translational Research and Division of Newborn Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
  • Grant PE; Fetal Neonatal Neuroimaging and Developmental Science Center, Division of Newborn Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
  • Im K; Neuroradiology Division, Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
Sci Rep ; 9(1): 18833, 2019 12 11.
Article em En | MEDLINE | ID: mdl-31827105
ABSTRACT
The diffuse nature of mild traumatic brain injury (mTBI) impacts brain white-matter pathways with potentially long-term consequences, even after initial symptoms have resolved. To understand post-mTBI recovery in adolescents, longitudinal studies are needed to determine the interplay between highly individualised recovery trajectories and ongoing development. To capture the distributed nature of mTBI and recovery, we employ connectomes to probe the brain's structural organisation. We present a diffusion MRI study on adolescent mTBI subjects scanned one day, two weeks and one year after injury with controls. Longitudinal global network changes over time suggests an altered and more 'diffuse' network topology post-injury (specifically lower transitivity and global efficiency). Stratifying the connectome by its back-bone, known as the 'rich-club', these network changes were driven by the 'peripheral' local subnetwork by way of increased network density, fractional anisotropy and decreased diffusivities. This increased structural integrity of the local subnetwork may be to compensate for an injured network, or it may be robust to mTBI and is exhibiting a normal developmental trend. The rich-club also revealed lower diffusivities over time with controls, potentially indicative of longer-term structural ramifications. Our results show evolving, diffuse alterations in adolescent mTBI connectomes beginning acutely and continuing to one year.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Encéfalo / Concussão Encefálica / Conectoma Tipo de estudo: Observational_studies Limite: Adolescent / Child / Female / Humans / Male Idioma: En Revista: Sci Rep Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Encéfalo / Concussão Encefálica / Conectoma Tipo de estudo: Observational_studies Limite: Adolescent / Child / Female / Humans / Male Idioma: En Revista: Sci Rep Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Estados Unidos