Gastrodin alleviates cerebral ischemic damage in mice by improving anti-oxidant and anti-inflammation activities and inhibiting apoptosis pathway

Neurochem Res. 2015 Apr;40(4):661-73. doi: 10.1007/s11064-015-1513-5. Epub 2015 Jan 13.

Abstract

Gastrodin (GAS), an active constituent of the Chinese herbal medicine Tianma, has anti-oxidant and anti-inflammation activities but its protective effect to the prevention of neurotoxicity induced by ischemic stroke is unclear. In the present study, middle cerebral artery occlusion (MCAO) was used to establish a mice ischemic stroke model. Infarct volume ratio and neurobehavioral score were evaluated, Nissl staining was performed and the expression of cleaved Caspase 3, Bax and B cell lymphoma 2 (Bcl-2) were assessed at 24 h or 7 days after reperfusion. In addition, the total superoxide dismutase (SOD) activity and malondialdehyde (MDA) content, as well as the expression of Nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1), SOD1, phospho-Akt and total Akt and TNF-α and IL-1β in the ischemic hemispheres were also observed at 6 h after reperfusion to assess oxidative stress and inflammatory changes after GAS treatment. It was found that GAS, especially at high dose (100 mg/kg) reduced tested neuronal injury and neurobehavioral deficient in MCAO mice. Enhanced expression of cleaved Caspase 3 and Bax and decreased expression of Bcl-2 by MCAO were also reversed by GAS. Moreover, GAS treatment decreased the MDA content and the expression of TNF-α and IL-1β, and increased amount of SOD activity and the expression of HO-1 and SOD1 in GAS-treated ischemic brain. Furthermore, GAS significantly increased Akt phosphorylation and Nrf2 expression. These results support the neuroprotective effects of GAS, and the activation of Akt/Nrf2 pathway may play a critical role in the pharmacological action of GAS.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-Inflammatory Agents / pharmacology*
  • Antioxidants / pharmacology*
  • Apoptosis / drug effects*
  • Benzyl Alcohols / pharmacology*
  • Brain Ischemia / metabolism
  • Brain Ischemia / pathology
  • Brain Ischemia / prevention & control*
  • Cytokines / antagonists & inhibitors
  • Glucosides / pharmacology*
  • Inflammation Mediators / antagonists & inhibitors
  • Mice
  • Mice, Inbred C57BL
  • Oxidative Stress / drug effects

Substances

  • Anti-Inflammatory Agents
  • Antioxidants
  • Benzyl Alcohols
  • Cytokines
  • Glucosides
  • Inflammation Mediators
  • gastrodin