Fibrotic scarring following lesions to the central nervous system

Matrix Biol. 2018 Aug:68-69:561-570. doi: 10.1016/j.matbio.2018.02.009. Epub 2018 Feb 9.


Following lesions to the central nervous system, scar tissue forms at the lesion site. Injury often severs axons and scar tissue is thought to block axonal regeneration, resulting in permanent functional deficits. While scar-forming astrocytes have been extensively studied, much less attention has been given to the fibrotic, non-glial component of the scar. We here review recent progress in understanding fibrotic scar formation following different lesions to the brain and spinal cord. We specifically highlight recent evidence for pericyte-derived fibrotic scar tissue formation, discussing the origin, recruitment, function and therapeutic relevance of fibrotic scarring.

Keywords: Axon regeneration; Central nervous system; Fibrosis; Pericyte; Scarring; Spinal cord injury; Stroke.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Brain / pathology
  • Central Nervous System / pathology*
  • Cicatrix / pathology*
  • Fibrosis
  • Humans
  • Pericytes / pathology
  • Spinal Cord / pathology