Abstract Title:

Neuroprotective effects of Eriobotrya japonica againstβ-amyloid-induced oxidative stress and memory impairment.

Abstract Source:

Food Chem Toxicol. 2011 Apr;49(4):780-4. Epub 2010 Dec 17. PMID: 21168467

Abstract Author(s):

Mi-Jeong Kim, Jeongmin Lee, Ah-Reum Seong, Yoo-Hyun Lee, Yung-Jae Kim, Hum-Young Baek, Young Jun Kim, Woo Jin Jun, Ho-Geun Yoon

Article Affiliation:

Department of Biochemistry and Molecular Biology, Center for Chronic Metabolic Disease Research, Brain Korea 21 Project for Medical Sciences, Severance Medical Research Institute, Yonsei University College of Medicine, 134 Shinchon-dong, Seodaemun-gu, Seoul, South Korea.

Abstract:

The generation of oxygen free radicals and oxidative damage is believed to be involved in the pathogenesis of neurodegenerative disorders. Eriobotrya japonica has been used to treat several diseases in East Asia. In this study, we investigated the protective effect of an E. japonica extract against Aβ peptide-induced oxidative stress. The 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay demonstrated that the E. japonica extract scavenged approximately 40% of DPPH radicals. Also, treatment of the E. japonica extract inhibited Aβ(1-42)-mediated neuronal cell death. Furthermore, treatment of E. japonica extract efficiently suppressed the increase in intracellular ROS triggered by the Aβ(1-42) peptide. Importantly, mice pre-treated with the E. japonica extract showed restoration of alternation behavior and reversal of Aβ(1-42)-induced memory impairment. Consequently, the E. japonica extract substantially inhibited the increase in lipid peroxidation and restored superoxide dismutase activity. These results suggest that E. japonica protects from oxidative stress and cognitive deficits induced by the Aβ peptide.

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