Features of skin-coincubated macrophages that promote recovery from spinal cord injury

J Neuroimmunol. 2003 Sep;142(1-2):10-6. doi: 10.1016/s0165-5728(03)00260-1.

Abstract

Uncontrolled inflammation is considered to exacerbate the neuronal loss that follows spinal cord trauma. However, controlled inflammation response appears to be beneficial. Skin-coincubated macrophages injected into contused spinal cord of rats resulted in improved motor recovery and reduced spinal cyst formation. The macrophages express elevated levels of cell-surface molecules CD80, CD86, CD54 and MHC-II, markers characteristic of antigen presenting cells (APCs). Additionally, skin-coincubation elevates secretion of interleukin-1 beta (IL-1 beta) and Brain-Derived Neurotrophic Factor (BDNF), and reduces secretion of tumor necrosis factor alpha (TNF-alpha). We propose that macrophages activated by skin-coincubation bolster neuroprotective immune activity in the spinal cord, making the environment less cytotoxic and less hostile to axonal regeneration.

MeSH terms

  • Animals
  • Antigen-Presenting Cells / immunology
  • Antigen-Presenting Cells / metabolism
  • Antigen-Presenting Cells / transplantation
  • Behavior, Animal
  • Cytokines / metabolism
  • Injections, Intralesional
  • Macrophage Activation / immunology
  • Macrophages / immunology*
  • Macrophages / metabolism
  • Macrophages / transplantation
  • Male
  • Motor Activity / immunology
  • Rats
  • Rats, Sprague-Dawley
  • Skin / immunology*
  • Spinal Cord Injuries / immunology*
  • Spinal Cord Injuries / pathology
  • Spinal Cord Injuries / physiopathology
  • Spinal Cord Injuries / therapy*

Substances

  • Cytokines