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Advanced Diffusion Imaging in The Hippocampus of Rats with Mild Traumatic Brain Injury
Published on: August 14, 2019
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Linked alterations in structure and autoimmunity biomarkers in remote mild-to-moderate TBI: A multi-modal brain
Abigail B Waters1, Samantha H Penhale2, Shoumi Sarkar3
1Brain Rehabilitation Research Center, North Florida/South Georgia VAMC, Gainesville, FL, USA; Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA.
Neuroimage. Clinical
|July 3, 2025
Summary
Biomarkers like UCH-L1 in chronic mild-to-moderate traumatic brain injury (mmTBI) correlate with specific brain changes and slower processing speed, aiding in understanding injury heterogeneity.
Area of Science:
- Neuroscience
- Biomarker Research
- Neuroimaging
Background:
- Mild-to-moderate traumatic brain injury (mmTBI) recovery is highly variable, often leading to chronic cognitive deficits.
- While acute TBI biomarkers exist, their role in chronic mmTBI requires further investigation.
- Linking biomarkers, neuroimaging, and cognition is crucial for subtyping and prognostication in chronic TBI.
Purpose of the Study:
- To investigate the relationship between blood-based biomarkers, neuroimaging findings, and cognitive performance in individuals with chronic mmTBI.
- To explore the utility of advanced data fusion techniques in analyzing complex TBI data.
- To identify potential biomarkers that reflect chronic neurobiological changes post-TBI.
Main Methods:
- Sixty individuals with mmTBI underwent cognitive testing (WAIS-IV), MRI, and blood biomarker assessment.
- Linked Independent Component Analysis (LICA) was employed to fuse structural MRI data (T1-weighted and diffusion-weighted).
- Ultrasensitive immunoassays measured serum levels of GFAP, NFL, total tau, and UCH-L1; correlations with LICA components and cognitive scores were analyzed.
Main Results:
- LICA Component 4, linked to UCH-L1 levels, showed associations with reduced processing speed and a higher number of TBIs.
- This component reflected increased mean diffusivity in the ventral frontal lobe and decreased fractional anisotropy in corticospinal tracts.
Conclusions:
- Findings highlight UCH-L1 as a potential biomarker associated with specific neuroimaging alterations and cognitive deficits in chronic mmTBI.
- The study emphasizes the importance of considering individual heterogeneity in chronic TBI research.
- Further research into biomarkers and neuroimaging is needed to refine prognostic models for TBI recovery.
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01:14Brain Imaging
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01:28Traumatic Brain Injury l: Introduction
DefinitionTraumatic brain injury, or TBI, is a disturbance of normal brain function induced by an external mechanical force, such as a direct blow to the head or a penetrating injury. It can affect both brain structure and function, producing a wide range of clinical outcomes. TBI is a heterogeneous condition, meaning its effects may differ based on the type, location, and severity of the injury.Basis of ClassificationTBI is classified based on severity, injury mechanism, or pathophysiology. In...