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Food Nutr Res. 2017 Mar 28;61(1):1304678. doi: 10.1080/16546628.2017.1304678. eCollection 2017.

Fucoxanthin prevents H2O2-induced neuronal apoptosis via concurrently activating the PI3-K/Akt cascade and inhibiting the ERK pathway.

Author information

1
Ningbo Key Laboratory of Behavioral Neuroscience, Department of Physiology, School of Medicine, Ningbo University, Ningbo, PRChina.
2
School of Marine Sciences, Ningbo University, Ningbo, Ningbo, PRChina.

Abstract

Background: As a natural carotenoid abundant in chloroplasts of edible brown algae, fucoxanthin possesses various health benefits, including anti-oxidative activity in particular. Objective: In the present study, we studied whether fucoxanthin protected against hydrogen peroxide (H2O2)-induced neuronal apoptosis. Design: The neuroprotective effects of fucoxanthin on H2O2-induced toxicity were studied in both SH-SY5Y cells and primary cerebellar granule neurons. Results: Fucoxanthin significantly protected against H2O2-induced neuronal apoptosis and intracellular reactive oxygen species. H2O2 treatment led to the reduced activity of phosphoinositide 3-kinase (PI3-K)/Akt cascade and the increased activity of extracellular signal-regulated kinase (ERK) pathway in SH-SY5Y cells. Moreover, fucoxanthin significantly restored the altered activities of PI3-K/Akt and ERK pathways induced by H2O2. Both specific inhibitors of glycogen synthase kinase 3β (GSK3β) and mitogen-activated protein kinase kinase (MEK) significantly protected against H2O2-induced neuronal death. Furthermore, the neuroprotective effects of fucoxanthin against H2O2-induced neuronal death were abolished by specific PI3-K inhibitors. Conclusions: Our data strongly revealed that fucoxanthin protected against H2O2-induced neurotoxicity via concurrently activating the PI3-K/Akt cascade and inhibiting the ERK pathway, providing support for the use of fucoxanthin to treat neurodegenerative disorders induced by oxidative stress.

KEYWORDS:

Akt; ERK; Fucoxanthin; H2O2; neurodegenerative disorders

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