Tacrolimus (FK506) increases neuronal expression of GAP-43 and improves functional recovery after spinal cord injury in rats. Academic Article uri icon

Overview

abstract

  • Tacrolimus (FK506), a widely used immunosuppressant drug, has neurite-promoting activity in cultured PC12 cells and peripheral neurons. The present study investigated whether tacrolimus affects the expression of the neuronal growth-associated protein, GAP-43, as well as functional recovery after photothrombotic spinal cord injury in the rat. In injured animals receiving tacrolimus, the number of neurons expressing GAP-43 mRNA and protein approximately doubled compared to that in injured animals receiving vehicle alone. This increase in GAP-43-positive cells was paralleled by a significant improvement in neurological function evaluated by open-field and inclined plane tests. Another FKBP-12 ligand (V-10,367) had similar effects on GAP-43 expression and functional outcome, indicating that the observed effects of tacrolimus do not involve inhibition of the phosphatase calcineurin. Thus, tacrolimus, a drug which is already approved for use in humans, as well as other FKBP-12 ligands which do not inhibit calcineurin, could potentially enhance functional outcome after CNS injury in humans.

publication date

  • December 1, 1998

Research

keywords

  • GAP-43 Protein
  • Immunosuppressive Agents
  • Spinal Cord Injuries
  • Tacrolimus

Identity

Scopus Document Identifier

  • 0032411557

Digital Object Identifier (DOI)

  • 10.1006/exnr.1998.6974

PubMed ID

  • 9878202

Additional Document Info

volume

  • 154

issue

  • 2