Smooth Muscle Phenotype Switching in Blast Traumatic Brain Injury-Induced Cerebral Vasospasm

Eric S. Hald, Patrick W. Alford

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

Due to increased survival rates among soldiers exposed to explosive blasts, blast-induced traumatic brain injury (bTBI) has become much more prevalent in recent years. Cerebral vasospasm (CVS) is a common manifestation of brain injury whose incidence is significantly increased in bTBI. CVS is characterized by initial vascular smooth muscle cell (VSMC) hypercontractility, followed by prolonged vessel remodeling and lumen occlusion, and is traditionally associated with subarachnoid hemorrhage (SAH), but recent results suggest that mechanical injury during bTBI can cause mechanotransduced VSMC hypercontractility and phenotype switching necessary for CVS development, even in the absence of SAH. Here, we review the mechanisms by which mechanical stimulation and SAH can synergistically drive CVS progression, complicating treatment options in bTBI patients.

Original languageEnglish (US)
Pages (from-to)385-393
Number of pages9
JournalTranslational Stroke Research
Volume5
Issue number3
DOIs
StatePublished - Jun 2014

Keywords

  • Biomechanics
  • Blast traumatic brain injury
  • Cerebral vasospasm
  • Phenotype transformation
  • Subarachnoid hemorrhage
  • Vascular smooth muscle cells

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