Cited by 595Neurogenesis and neuroplasticity mechanismsStroke Rehabilitation and RecoveryNerve injury and regeneration

Cellular and molecular mechanisms of neural repair after stroke: making waves

Carmichael, S. Thomas·2006·Annals of Neurology

Abstract

Stroke is associated with a limited degree of functional recovery. Imaging studies in humans have shown that reorganization in periinfarct and connected cortical areas most closely correlates with functional recovery after stroke. On a cellular level, two major regenerative events occur in periinfarct cortex: axons sprout new connections and establish novel projection patterns, and newly born immature neurons migrate into periinfarct cortex. Stroke induces a unique microenvironment for axonal sprouting in periinfarct cortex, in which growth‐inhibitory molecules are reduced for 1 month after the infarct. During this period, neurons activate growth‐promoting genes in successive waves. Neurogenesis also occurs through waves of migration of immature neurons from their origin in the subventricular zone into periinfarct cortex. This migration is mediated, in part, by the cytokine erythropoietin. These data indicate that the cellular environment after stroke is far from one of just death and destruction, but rather involves a longer evolving process of neuronal regeneration. Poststroke neuronal regeneration is characterized by waves of specific cellular and molecular events. Manipulating these waves of regeneration may provide for novel therapies that will improve recovery after stroke. Ann Neurol 2006;59:735–742

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Crossref · 10.1002/ana.20845

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Authors
Carmichael, S. T.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Carmichael, S. Thomas
Venue
Annals of Neurology
Publisher
Wiley
Published
2006-04-21
Volume
59
Issue
5
Pages
735-742
ISSN
  • 0364-5134 (ISSN-L)
  • 1531-8249
OpenAlex
W2096597907
Cited by
595
References
78
Citations by year
2026: 13 · 2025: 18 · 2024: 20 · 2023: 30 · 2022: 24 · 2021: 19 · 2020: 21 · 2019: 31 · 2018: 32 · 2017: 38 · 2016: 30 · 2015: 40 · 2014: 43 · 2013: 44 · 2012: 35
FWCI
2.17
Type
journal article
Language
en
Open access
closed
Locations
  • Annals of Neurology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Neurological Disorders and Stroke (1R01 NS45729, R01NS045729)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Health Sciences › Medicine › Rehabilitation › Stroke Rehabilitation and Recovery
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
Keywords
stroke, neural repair, functional recovery, axonal sprouting, neurogenesis, subventricular zone, neuronal migration, erythropoietin, cortical reorganization, stroke treatment
MeSH terms
Animals, Axons, Cerebral Cortex, Humans, Nerve Regeneration, Neurons, Stroke

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