Anti-ischemic and anti-inflammatory activity of (S)-cis-verbenol

Free Radic Res. 2010 May;44(5):541-51. doi: 10.3109/10715761003667562.

Abstract

(S)-cis-verbenol, a natural metabolite from (-)-alpha-pinene of host pine tree, has been suggested to have anti-ischemic activity. However, the exact mechanism for the anti-ischemic activity of (S)-cis-verbenol remains unclear yet. In the present study, (S)-cis-verbenol reduced cerebral ischemic injury caused by 1.5-h middle cerebral artery occlusion followed by 24-h reperfusion. Furthermore, (S)-cis-verbenol significantly prevented neuronal cell death caused by oxygen-glucose deprivation (OGD, 1 h) and subsequent re-oxygenation (5 h). While (S)-cis-verbenol did not inhibit the NMDA-stimulated calcium influx, it reduced the intracellular level of reactive oxygen species (ROS) elevated by OGD/re-oxygenation. ORAC assay indicated that (S)-cis-verbenol potently eliminated peroxyl radicals. In DPPH and DHR123 fluorescence assays, however, (S)-cis-verbenol did not show a direct ROS scavenging effect. Furthermore, (S)-cis-verbenol reduced the expression levels of pro-inflammatory cytokines in ischemic brain and immunostimulated glial cells. The present results indicate that (S)-cis-verbenol may be a useful therapeutic agent due to its anti-oxidative and anti-inflammatory activities.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-Inflammatory Agents, Non-Steroidal / chemistry
  • Anti-Inflammatory Agents, Non-Steroidal / pharmacology
  • Antioxidants / chemistry
  • Antioxidants / pharmacology*
  • Bicyclic Monoterpenes
  • Brain Ischemia / drug therapy*
  • Brain Ischemia / metabolism
  • Brain Ischemia / pathology
  • Cell Death / drug effects
  • Cytokines / biosynthesis
  • Cytokines / drug effects*
  • Dose-Response Relationship, Drug
  • Glucose / metabolism
  • Male
  • Monoterpenes / chemistry
  • Monoterpenes / pharmacology*
  • Neuroglia / drug effects
  • Neuroglia / metabolism
  • Neurons / drug effects*
  • Neurons / pathology
  • Oxygen / metabolism
  • Rats
  • Rats, Sprague-Dawley
  • Reactive Oxygen Species / metabolism
  • Stereoisomerism

Substances

  • Anti-Inflammatory Agents, Non-Steroidal
  • Antioxidants
  • Bicyclic Monoterpenes
  • Cytokines
  • Monoterpenes
  • Reactive Oxygen Species
  • verbenol
  • Glucose
  • Oxygen