Limited minocycline neuroprotection after balloon-compression spinal cord injury in the rat

Neurosci Lett. 2008 Mar 15;433(3):246-9. doi: 10.1016/j.neulet.2008.01.041. Epub 2008 Jan 20.

Abstract

Minocycline (MC), a second-generation tetracycline and anti-inflammatory agent reportedly provides neuroprotection following CNS injury. The objective of this study was to examine the neuroprotective effects of short and long-term MC treatment using balloon-compression spinal cord injury (SCI) in the rat. Rats subjected to SCI were treated with MC for 1 day (1DMC group; total dose 180 mg/kg) or 5 days (5DMC group; total dose 450 mg/kg) or placebo. The effects of MC treatment on locomotor recovery (BBB scale) and spinal cord white and gray matter sparing were evaluated for up to 28 days. Morphometric analysis showed that while MC treatment spared spinal cord white and gray matter rostral to the lesion epicenter in both, 1DMC and 5DMC groups, sparing of white and gray matter areas was not observed caudal to the traumatic lesion. In addition, MC treatment had no effect on final locomotor recovery. Limited improvement of spinal cord post-compression consequences raises questions about the neuroprotection efficiency of MC treatment following compression SCI in the rat.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-Inflammatory Agents / pharmacology
  • Dose-Response Relationship, Drug
  • Male
  • Minocycline / pharmacology*
  • Motor Activity / drug effects
  • Motor Activity / physiology
  • Nerve Degeneration / drug therapy
  • Nerve Degeneration / physiopathology
  • Nerve Degeneration / prevention & control
  • Nerve Fibers, Myelinated / drug effects
  • Nerve Fibers, Myelinated / pathology
  • Neural Pathways / drug effects
  • Neural Pathways / pathology
  • Neuroprotective Agents / pharmacology*
  • Rats
  • Rats, Wistar
  • Recovery of Function / drug effects
  • Recovery of Function / physiology
  • Spinal Cord / drug effects*
  • Spinal Cord / physiopathology
  • Spinal Cord Compression / drug therapy*
  • Spinal Cord Compression / physiopathology
  • Treatment Outcome

Substances

  • Anti-Inflammatory Agents
  • Neuroprotective Agents
  • Minocycline