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Objective: A considerable number of people experience persisting symptoms and functional limitations after mild traumatic brain injury (mTBI). It is unclear whether subtle white matter changes contribute to this phenomenon. In this systematic review, the authors evaluated whether microstructural white matter indices on advanced MRI are related to clinical dysfunction among patients without abnormalities on standard brain computed tomography (CT) or MRI (uncomplicated mTBI).
Methods: A search of multiple databases was performed. Studies with individuals who experienced blast-related, sports-related, or multiple mTBIs were excluded. Diffusion tensor imaging (DTI) and susceptibility-weighted imaging (SWI) metrics and cognitive, neuropsychiatric, or functional outcome measures were extracted from each study.
Results: Thirteen studies were selected (participants with mTBI, N=553; healthy control group, N=438). Seven DTI studies evaluated cognitive function, with five reporting significant correlations between reduced white matter integrity and deficits in attention, processing speed, and executive function at 6-12 months after injury (three studies included only individuals with uncomplicated mTBI). Four studies found significant correlations between DTI metrics and persistent postconcussive symptoms after 3-12 months (one study included only individuals with uncomplicated mTBI). Two SWI studies reported conflicting findings regarding the relationship between the presence of microbleeds and postconcussive symptoms.
Conclusions: The results revealed that indices of microstructural white matter integrity may relate to clinical presentation 3-12 months after injury in uncomplicated mTBI. However, analysis methods and brain regions studied varied across studies. Further research is needed to identify relationships between white matter indices in specific brain regions and symptom persistence beyond 12 months.
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http://dx.doi.org/10.1176/appi.neuropsych.20230122 | DOI Listing |
Graefes Arch Clin Exp Ophthalmol
September 2025
Department of Physics of Condensed Matter, Optics Area. Vision Research Group (CIVIUS), University of Seville, Avenida de la Reina Mercedes s/n (41012), Seville, Spain.
Purpose: To analyze the relationship between various visual function parameters (refractive status, visual acuity and contrast sensitivity) and macular pigment optical density (MPOD) values, as well as dietary intake of lutein and zeaxanthin in a pediatric population.
Methods: Thirty-six healthy White pediatric patients participated in this cross-sectional study conducted at the Optometry Clinic (Faculty of Pharmacy, Seville, Spain). MPOD values were measured using the MPSII (Macular Pigment Screener II).
Neurol Res
September 2025
Department of Human Anatomy, Wannan Medical College, Wuhu, China.
Background: Ischemic stroke can damage the cerebral white matter, resulting in myelin loss and neurological deficits. Moreover, microglial activation plays an important role in ischemic stroke; therefore, inhibiting microglial activation has become an effective therapeutic target for ischemic stroke.
Objective: This study aimed to investigate the effects of electroacupuncture (EA) on microglial activation and polarization, and the role of oligodendrocyte genesis in myelin reformation after ischemic stroke.
Exp Neurol
September 2025
Division of Pharmacology and Pharmacotherapy, Drug Research Programme, Faculty of Pharmacy, University of Helsinki, Finland; Department of Pharmacology, Faculty of Medicine, University of Helsinki, Finland. Electronic address:
Traumatic brain injury (TBI) impacts up to 60 million people annually. Both severe TBIs and repeated mild TBIs (rmTBIs) can lead to persistent symptoms such as cognitive deficits, and even neurodegenerative diseases like chronic traumatic encephalopathy (CTE). To date, no therapies exist to mitigate the risk of CTE or other chronic symptoms post-TBI.
View Article and Find Full Text PDFNeurology
October 2025
Norcliffe Foundation Center for Integrative Brain Research, Seattle Children's Research Institute, WA.
Background And Objectives: Neuroimaging findings in immune effector cell-associated neurotoxicity syndrome (ICANS) have not been systematically described. We created the chimeric antigen receptor (CAR) T-cell Neurotoxicity Imaging Virtual Archive Library (CARNIVAL), a centralized imaging database for children and young adults receiving CAR T-cell therapy. Objectives of this study were to (1) characterize neuroimaging findings associated with ICANS and (2) determine whether specific ICANS-related neuroimaging findings are associated with individual neurologic symptoms.
View Article and Find Full Text PDFTrop Doct
September 2025
Additional Professor, Department of Radiodiagnosis, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
Chikungunya virus (CHIKV) typically causes febrile illness and arthralgia. However, severe complications such as encephalitis, rhabdomyolysis, and multiorgan dysfunction are increasingly recognised, particularly during epidemics in endemic regions. We report a case of a 61-year old male presenting with progressive flaccid paraparesis and respiratory failure following febrile illness.
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