Cited by 737Extracellular vesicles in diseaseTraumatic Brain Injury and Neurovascular DisturbancesTraumatic Brain Injury Research

Effect of exosomes derived from multipluripotent mesenchymal stromal cells on functional recovery and neurovascular plasticity in rats after traumatic brain injury

Open access
Zhang, Yanlu, Chopp, Michael, Meng, Yuling, Katakowski, Mark, Xin, Hongqi, Mahmood, Asim, Xiong, Ye·2015·Journal of neurosurgery

Abstract

OBJECT: Transplanted multipotent mesenchymal stromal cells (MSCs) improve functional recovery in rats after traumatic brain injury (TBI). In this study the authors tested a novel hypothesis that systemic administration of cell-free exosomes generated from MSCs promotes functional recovery and neurovascular remodeling in rats after TBI. METHODS: Two groups of 8 Wistar rats were subjected to TBI, followed 24 hours later by tail vein injection of 100 μg protein of exosomes derived from MSCs or an equal volume of vehicle (phosphate-buffered saline). A third group of 8 rats was used as sham-injured, sham-treated controls. To evaluate cognitive and sensorimotor functional recovery, the modified Morris water maze, modified Neurological Severity Score, and foot-fault tests were performed. Animals were killed at 35 days after TBI. Histopathological and immunohistochemical analyses were performed for measurements of lesion volume, neurovascular remodeling (angiogenesis and neurogenesis), and neuroinflammation. RESULTS: Compared with the saline-treated group, exosome-treated rats with TBI showed significant improvement in spatial learning at 34-35 days as measured by the modified Morris water maze test (p < 0.05), and sensorimotor functional recovery (i.e., reduced neurological deficits and foot-fault frequency) was observed at 14-35 days postinjury (p < 0.05). Exosome treatment significantly increased the number of newly generated endothelial cells in the lesion boundary zone and dentate gyrus and significantly increased the number of newly formed immature and mature neurons in the dentate gyrus as well as reducing neuroinflammation. CONCLUSIONS: The authors demonstrate for the first time that MSC-generated exosomes effectively improve functional recovery, at least in part, by promoting endogenous angiogenesis and neurogenesis and by reducing inflammation in rats after TBI. Thus, MSC-generated exosomes may provide a novel cell-free therapy for TBI and possibly for other neurological diseases.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.3171/2014.11.jns14770

Cites

107 of 107 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Zhang, Y., Chopp, M., Meng, Y., Katakowski, M., Xin, H., Mahmood, A., & Xiong, Y.
Affiliations
  • Departments of Neurosurgery and
  • Oakland University (US)
  • Henry Ford Hospital (US)
Venue
Journal of neurosurgery
Published
2015-04
Volume
122
Issue
4
Pages
856-867
ISSN
  • 0022-3085 (ISSN-L)
  • 1933-0693
OpenAlex
W2168120562
Cited by
737
References
107
Citations by year
2026: 32 · 2025: 61 · 2024: 71 · 2023: 64 · 2022: 84 · 2021: 92 · 2020: 85 · 2019: 82 · 2018: 56 · 2017: 53 · 2016: 39 · 2015: 17 · 2014: 1
FWCI
23.87
Type
journal article
Language
en
Open access
Locations
  • Journal of neurosurgery (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute of Neurological Disorders and Stroke (R01NS081189)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Extracellular vesicles in disease
  • Health Sciences › Medicine › Neurology › Traumatic Brain Injury and Neurovascular Disturbances
  • Health Sciences › Medicine › Epidemiology › Traumatic Brain Injury Research
Keywords
exosomes, mesenchymal stem cells, traumatic brain injury, cell-free therapy, functional recovery, angiogenesis, neurogenesis, neuroinflammation, spatial learning, sensorimotor recovery, dentate gyrus
MeSH terms
Doublecortin Protein, Animals, Blood Vessels, Brain Injuries, Cell Count, Cognition, Injections, Intravenous, Male, Neuronal Plasticity, Sensation, Rats, Wistar, Maze Learning, Recovery of Function, Pluripotent Stem Cells, Mesenchymal Stem Cell Transplantation, Rats, Exosomes, Mesenchymal Stem Cells

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review