Exosomal neurofilament light: A prognostic biomarker for remote symptoms after mild traumatic brain injury?
Adult
Biomarkers
Blast Injuries
/ blood
Brain Concussion
/ blood
Cross-Sectional Studies
Depression
/ blood
Exosomes
/ chemistry
Female
Follow-Up Studies
Humans
Interleukin-6
/ blood
Male
Middle Aged
Neurofilament Proteins
/ blood
Post-Concussion Syndrome
/ blood
Prognosis
Retrograde Degeneration
Severity of Illness Index
Stress Disorders, Post-Traumatic
/ blood
Tumor Necrosis Factor-alpha
/ analysis
Vascular Endothelial Growth Factor A
/ blood
Veterans
Veterans Health
Warfare
Journal
Neurology
ISSN: 1526-632X
Titre abrégé: Neurology
Pays: United States
ID NLM: 0401060
Informations de publication
Date de publication:
09 06 2020
09 06 2020
Historique:
received:
22
07
2019
accepted:
02
12
2019
pubmed:
29
5
2020
medline:
25
9
2020
entrez:
29
5
2020
Statut:
ppublish
Résumé
To measure exosomal and plasma levels of candidate blood biomarkers in veterans with history of mild traumatic brain injury (mTBI) and test their relationship with chronic symptoms. Exosomal and plasma levels of neurofilament light (NfL) chain, tumor necrosis factor (TNF)-α, interleukin (IL)-6, IL-10, and vascular endothelial growth factor (VEGF) were measured using an ultrasensitive assay in a cohort of 195 veterans, enrolled in the Chronic Effects of Neurotrauma Consortium Longitudinal Study. We examined relationships between candidate biomarkers and symptoms of postconcussive syndrome (PCS), posttraumatic stress disorder (PTSD), and depression. Biomarker levels were compared among those with no traumatic brain injury (TBI) (controls), 1-2 mTBIs, and repetitive (3 or more) mTBIs. Elevated exosomal and plasma levels of NfL were associated with repetitive mTBIs and with chronic PCS, PTSD, and depression symptoms. Plasma TNF-α levels correlated with PCS and PTSD symptoms. The total number of mTBIs correlated with exosomal and plasma NfL levels and plasma IL-6. Increased number of years since the most recent TBI correlated with higher exosomal NfL and lower plasma IL-6 levels, while increased number of years since first TBI correlated with higher levels of exosomal and plasma NfL, as well as plasma TNF-α and VEGF. Repetitive mTBIs are associated with elevated exosomal and plasma levels of NfL, even years following these injuries, with the greatest elevations in those with chronic PCS, PTSD, and depression symptoms. Our results suggest a possible neuroinflammatory and axonal disruptive basis for symptoms that persist years after mTBI, especially repetitive.
Identifiants
pubmed: 32461282
pii: WNL.0000000000009577
doi: 10.1212/WNL.0000000000009577
pmc: PMC7455370
doi:
Substances chimiques
Biomarkers
0
IL6 protein, human
0
Interleukin-6
0
Neurofilament Proteins
0
Tumor Necrosis Factor-alpha
0
VEGFA protein, human
0
Vascular Endothelial Growth Factor A
0
neurofilament protein L
0
Types de publication
Journal Article
Multicenter Study
Observational Study
Research Support, N.I.H., Intramural
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
e2412-e2423Commentaires et corrections
Type : CommentIn
Type : CommentIn
Type : CommentIn
Informations de copyright
© 2020 American Academy of Neurology.
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