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Abstract Title:

Neuroprotective effect of polysaccharide separated from Perilla frutescens Britton var. acuta Kudo against HO-induced oxidative stress in HT22 hippocampus cells.

Abstract Source:

Biosci Biotechnol Biochem. 2018 Apr 8:1-15. Epub 2018 Apr 8. PMID: 29629628

Abstract Author(s):

Eui-Baek Byun, Eun-Ji Cho, Yi-Eun Kim, Woo Sik Kim, Eui-Hong Byun

Article Affiliation:

Eui-Baek Byun

Abstract:

This study was carried out to evaluate the neuroprotective activity of polysaccharide extracts isolated from Perilla frutescens (PEPF) in HO-treated HT22 hippocampus cells. The PEPF treatment was found to increase the anti-oxidant activities of HT22 hippocampus cells. PEPF treatment resulted in a significant protection of HT22 hippocampus cells against HO-induced neurotoxicity, this protection ultimately occurred through an inhibition of ROS-mediated intracellular Calevels leading to MAPKs and NF-κB, as well as the accumulation of PI3K/AKT and Nrf2-mediated HO-1/NQO1 pathways. Furthermore, PEPF not only decreased the expression of Bax, cytochrome c, and cleaved caspases-3, -8, and -9, but also increased the expression of PARP and Bcl-2 in the HO-treated HT22 hippocampus cells, which overall contributed to the neuroprotective action. PEPF retains its mitochondrial membrane potential and reduces the elevated levels of sub-G1 phase and apoptotic morphological features induced by HO. It also reduces the malondialdehyde levels and enhances the intracellular SOD activity.

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