Exosomal neurofilament light: A prognostic biomarker for remote symptoms after mild traumatic brain injury?


Journal

Neurology
ISSN: 1526-632X
Titre abrégé: Neurology
Pays: United States
ID NLM: 0401060

Informations de publication

Date de publication:
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-e2423

Commentaires et corrections

Type : CommentIn
Type : CommentIn
Type : CommentIn

Informations de copyright

© 2020 American Academy of Neurology.

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Auteurs

Vivian A Guedes (VA)

From the National Institute of Nursing Research (V.A.G., C.L., C.D., J.M.G.), National Institute of Neurological Disorders and Stroke (P.S.), and Center for Neuroscience and Regenerative Medicine (P.S., J.M.G.) and Department of Neurology (K.K., B.-X.Q.), Uniformed Services University of the Health Sciences, NIH; Walter Reed National Military Medical Center (K.K.), National Intrepid Center of Excellence, Bethesda, MD; Department of Physical Medicine & Rehabilitation (W.C.W.), Virginia Commonwealth University, Richmond; RTI International (T.N.), Research Triangle Park, NC; and Department of Neurology (R.D.-A.), University of Pennsylvania, Philadelphia.

Kimbra Kenney (K)

From the National Institute of Nursing Research (V.A.G., C.L., C.D., J.M.G.), National Institute of Neurological Disorders and Stroke (P.S.), and Center for Neuroscience and Regenerative Medicine (P.S., J.M.G.) and Department of Neurology (K.K., B.-X.Q.), Uniformed Services University of the Health Sciences, NIH; Walter Reed National Military Medical Center (K.K.), National Intrepid Center of Excellence, Bethesda, MD; Department of Physical Medicine & Rehabilitation (W.C.W.), Virginia Commonwealth University, Richmond; RTI International (T.N.), Research Triangle Park, NC; and Department of Neurology (R.D.-A.), University of Pennsylvania, Philadelphia. kimbra.kenney@usuhs.edu.

Pashtun Shahim (P)

From the National Institute of Nursing Research (V.A.G., C.L., C.D., J.M.G.), National Institute of Neurological Disorders and Stroke (P.S.), and Center for Neuroscience and Regenerative Medicine (P.S., J.M.G.) and Department of Neurology (K.K., B.-X.Q.), Uniformed Services University of the Health Sciences, NIH; Walter Reed National Military Medical Center (K.K.), National Intrepid Center of Excellence, Bethesda, MD; Department of Physical Medicine & Rehabilitation (W.C.W.), Virginia Commonwealth University, Richmond; RTI International (T.N.), Research Triangle Park, NC; and Department of Neurology (R.D.-A.), University of Pennsylvania, Philadelphia.

Bao-Xi Qu (BX)

From the National Institute of Nursing Research (V.A.G., C.L., C.D., J.M.G.), National Institute of Neurological Disorders and Stroke (P.S.), and Center for Neuroscience and Regenerative Medicine (P.S., J.M.G.) and Department of Neurology (K.K., B.-X.Q.), Uniformed Services University of the Health Sciences, NIH; Walter Reed National Military Medical Center (K.K.), National Intrepid Center of Excellence, Bethesda, MD; Department of Physical Medicine & Rehabilitation (W.C.W.), Virginia Commonwealth University, Richmond; RTI International (T.N.), Research Triangle Park, NC; and Department of Neurology (R.D.-A.), University of Pennsylvania, Philadelphia.

Chen Lai (C)

From the National Institute of Nursing Research (V.A.G., C.L., C.D., J.M.G.), National Institute of Neurological Disorders and Stroke (P.S.), and Center for Neuroscience and Regenerative Medicine (P.S., J.M.G.) and Department of Neurology (K.K., B.-X.Q.), Uniformed Services University of the Health Sciences, NIH; Walter Reed National Military Medical Center (K.K.), National Intrepid Center of Excellence, Bethesda, MD; Department of Physical Medicine & Rehabilitation (W.C.W.), Virginia Commonwealth University, Richmond; RTI International (T.N.), Research Triangle Park, NC; and Department of Neurology (R.D.-A.), University of Pennsylvania, Philadelphia.

Christina Devoto (C)

From the National Institute of Nursing Research (V.A.G., C.L., C.D., J.M.G.), National Institute of Neurological Disorders and Stroke (P.S.), and Center for Neuroscience and Regenerative Medicine (P.S., J.M.G.) and Department of Neurology (K.K., B.-X.Q.), Uniformed Services University of the Health Sciences, NIH; Walter Reed National Military Medical Center (K.K.), National Intrepid Center of Excellence, Bethesda, MD; Department of Physical Medicine & Rehabilitation (W.C.W.), Virginia Commonwealth University, Richmond; RTI International (T.N.), Research Triangle Park, NC; and Department of Neurology (R.D.-A.), University of Pennsylvania, Philadelphia.

William C Walker (WC)

From the National Institute of Nursing Research (V.A.G., C.L., C.D., J.M.G.), National Institute of Neurological Disorders and Stroke (P.S.), and Center for Neuroscience and Regenerative Medicine (P.S., J.M.G.) and Department of Neurology (K.K., B.-X.Q.), Uniformed Services University of the Health Sciences, NIH; Walter Reed National Military Medical Center (K.K.), National Intrepid Center of Excellence, Bethesda, MD; Department of Physical Medicine & Rehabilitation (W.C.W.), Virginia Commonwealth University, Richmond; RTI International (T.N.), Research Triangle Park, NC; and Department of Neurology (R.D.-A.), University of Pennsylvania, Philadelphia.

Tracy Nolen (T)

From the National Institute of Nursing Research (V.A.G., C.L., C.D., J.M.G.), National Institute of Neurological Disorders and Stroke (P.S.), and Center for Neuroscience and Regenerative Medicine (P.S., J.M.G.) and Department of Neurology (K.K., B.-X.Q.), Uniformed Services University of the Health Sciences, NIH; Walter Reed National Military Medical Center (K.K.), National Intrepid Center of Excellence, Bethesda, MD; Department of Physical Medicine & Rehabilitation (W.C.W.), Virginia Commonwealth University, Richmond; RTI International (T.N.), Research Triangle Park, NC; and Department of Neurology (R.D.-A.), University of Pennsylvania, Philadelphia.

Ramon Diaz-Arrastia (R)

From the National Institute of Nursing Research (V.A.G., C.L., C.D., J.M.G.), National Institute of Neurological Disorders and Stroke (P.S.), and Center for Neuroscience and Regenerative Medicine (P.S., J.M.G.) and Department of Neurology (K.K., B.-X.Q.), Uniformed Services University of the Health Sciences, NIH; Walter Reed National Military Medical Center (K.K.), National Intrepid Center of Excellence, Bethesda, MD; Department of Physical Medicine & Rehabilitation (W.C.W.), Virginia Commonwealth University, Richmond; RTI International (T.N.), Research Triangle Park, NC; and Department of Neurology (R.D.-A.), University of Pennsylvania, Philadelphia.

Jessica M Gill (JM)

From the National Institute of Nursing Research (V.A.G., C.L., C.D., J.M.G.), National Institute of Neurological Disorders and Stroke (P.S.), and Center for Neuroscience and Regenerative Medicine (P.S., J.M.G.) and Department of Neurology (K.K., B.-X.Q.), Uniformed Services University of the Health Sciences, NIH; Walter Reed National Military Medical Center (K.K.), National Intrepid Center of Excellence, Bethesda, MD; Department of Physical Medicine & Rehabilitation (W.C.W.), Virginia Commonwealth University, Richmond; RTI International (T.N.), Research Triangle Park, NC; and Department of Neurology (R.D.-A.), University of Pennsylvania, Philadelphia.

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