Article Publish Status: FREE
Abstract Title:

Neuroprotective Effect of the Ginsenoside Rg1 on Cerebral Ischemic Injury In Vivo and In Vitro Is Mediated by PPAR-Regulated Antioxidative and Anti-Inflammatory Pathways.

Abstract Source:

Evid Based Complement Alternat Med. 2017 ;2017:7842082. Epub 2017 Jun 1. PMID: 28656054

Abstract Author(s):

Yang Li, Yue Guan, Ying Wang, Chun-Lei Yu, Feng-Guo Zhai, Li-Xin Guan

Article Affiliation:

Yang Li


The ginsenoside Rg1 exerts a neuroprotective effect during cerebral ischemia/reperfusion injury. Rg1 has been previously reported to improve PPARexpression and signaling, consequently enhancing its regulatory processes. Due to PPAR's role in the suppression of oxidative stress and inflammation, Rg1's PPAR-normalizing capacity may play a role in the observed neuroprotective action of Rg1 during ischemic brain injury. We utilized a middle cerebral artery ischemia/reperfusion injury model in rats in addition to an oxygen glucose deprivation model in cortical neurons to elucidate the mechanisms underlying the neuroprotective effects of Rg1. We found that Rg1 significantly increased PPARexpression and reduced multiple indicators of oxidative stress and inflammation. Ultimately, Rg1 treatment improved neurological function and diminished brain edema, indicating that Rg1 may exert its neuroprotective action on cerebral ischemia/reperfusion injury through the activation of PPARsignaling. In addition, the present findings suggested that Rg1 was a potent PPARagonist in that it upregulated PPARexpression and was inhibited by GW9662, a selective PPARantagonist. These findings expand our previous understanding of the molecular basis of the therapeutic action of Rg1 in cerebral ischemic injury, laying the ground work for expanded study and clinical optimization of the compound.

Study Type : Animal Study, In Vitro Study

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