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Fucoxanthin ameliorates inflammation and oxidative reponses in microglia
Ratih Pangestuti1, Thanh-Sang Vo, Dai-Hung Ngo
1Marine Bioprocess Research Center and ‡Marine Biochemistry Laboratory, Department of Chemistry, Pukyong National University , Busan 608-737, Republic of Korea.
Journal of Agricultural and Food Chemistry
|April 5, 2013
Summary
Fucoxanthin, a compound found in seaweed, reduces inflammation and oxidative stress in brain cells. This suggests potential neuroprotective effects against Alzheimer's disease (AD) by calming activated microglia.
Area of Science:
- Neuroscience
- Pharmacology
- Cell Biology
Background:
- Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by memory loss and cognitive decline.
- AD brains exhibit neuronal damage, microglial activation, inflammation, and oxidative stress.
- Microglia play a crucial role in AD pathogenesis through inflammatory and oxidative responses.
Purpose of the Study:
- To investigate the potential of fucoxanthin to mitigate oxidative stress and inflammation in a cellular model of Alzheimer's disease.
- To determine if fucoxanthin affects inflammatory signaling pathways and antioxidant defenses in microglia.
Main Methods:
- Utilized BV2 microglia cells stimulated with amyloid-beta 42 (Aβ42) to mimic AD conditions.
- Assessed pro-inflammatory cytokine secretion using ELISA.
- Analyzed the mitogen-activated protein kinase (MAPK) pathway phosphorylation.
- Measured DNA oxidation, intracellular reactive oxygen species (ROS) levels, and antioxidant enzyme activity.
Main Results:
- Fucoxanthin treatment significantly reduced the secretion of pro-inflammatory mediators from BV2 cells.
- Fucoxanthin suppressed the phosphorylation of the MAPK signaling pathway.
- Fucoxanthin inhibited free radical-induced DNA oxidation and decreased intracellular ROS formation.
- Fucoxanthin treatment led to the recovery of antioxidant enzyme activity.
Conclusions:
- Fucoxanthin demonstrates anti-inflammatory and antioxidant properties in microglia stimulated with Aβ42.
- Fucoxanthin may act as a negative feedback regulator, reducing microglial-induced inflammation and oxidative stress.
- These findings suggest fucoxanthin holds potential for protecting neuronal cells from neurotoxic mediators in AD.
