Neuroprotective effect of fucoxanthin on β-amyloid-induced cell death

doi:10.5246/jcps.2015.07.060

Abstract

Abstract:

Alzheimer’s disease (AD) is one of the most common cognitive disorders of the elderly. Fucoxanthin is a carotenoid that is found in common edible seaweed, and it is considered as a major active compound of marine algae with cancer-preventing,antioxidant and anti-inflammatory properties. In this study, we investigated the ability of fucoxanthin to protect against theβ-amyloid protein (Aβ)-induced neurotoxicity in primary cortical cultured neurons and PC12 cells. Neuroprotective effects of fucoxanthin were determined by measuring cell viability and nuclei double-staining with Hoechst 33342 and propidium iodide following Aβ treatment with or without fucoxanthin. Moreover, we also evaluated its potential mechanism on antioxidation by detecting the total antioxidant capacity (T-AOC), level of lipid peroxidation malondialdehyde (MDA) and activity of superoxide dismutase (SOD). We found that exposure of cortical cultured neurons or PC12 cells to Aβ resulted in neuronal cell death, whereas pre-treatment with fucoxanthin reduced Aβ-induced cell death. The data on the T-AOC, MDA level and SOD activity showed that Aβ treatment resulted in decreases in T-AOC and SOD activity and an increase in MDA level. After fucoxanthin administration, the results of T-AOC, MDA level and SOD activity showed an opposite trend, indicating that T-AOC was increased and MDA level was reduced. These results suggested that fucoxanthin prevented Aβ-induced neurotoxicity through attenuating oxidative stress induced by Aβ. Therefore, fucoxanthin might be useful as a potential preventive or therapeutic agent for AD.

Key words: Alzheimer’s disease, Neurodegenerative disorder, Antioxidation

CLC Number:

R965

Supporting:

Xin Zhao, Shiping Zhang, Chunna An, Hongning Zhang, Yi Sun, Yanmei Li, Xiaoping Pu. Neuroprotective effect of fucoxanthin on β-amyloid-induced cell death[J]. Journal of Chinese Pharmaceutical Sciences, 2015, 24(7): 467-474.

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