Journal
BIOMEDICINES
Volume 9, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/biomedicines9030295
Keywords
Parkinson's disease; sinapic acid; oxidative stress; ER stress; mitochondrial dysfunction; MAPK
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Funding
- Ministry of Science and Technology [NRF-2017R1D1A1B03035297]
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Parkinson's disease is a neurodegenerative disorder with limited treatment options. Sinapic acid has shown potential as a neuroprotective agent against oxidative stress, mitochondrial dysfunction, and apoptosis, suggesting promising effects in the prevention and treatment of PD.
Parkinson's disease (PD) is characterized by progressive dopaminergic neuron loss or dysfunction and is the second most prevalent neurodegenerative disorder after Alzheimer's disease. However, current therapeutic strategies for PD are limited to treating the outcomes of this disease rather than preventing it. Sinapic acid (SA) is a phenolic compound with potential antioxidant properties, which reportedly acts as a therapeutic agent against many diseases including cancer, as well as cardiac and liver diseases. However, little is known about the effects of SA against neurodegenerative disorders. Therefore, our study sought to evaluate the neuroprotective effects of non-cytotoxic concentrations of SA against 6-hydroxydopamine (6-OHDA)-induced neurotoxicity in SH-SY5Y human neuroblastoma cells, which we used as an in vitro PD model. SA increased cell viability and rescued the cells from 6-OHDA-induced apoptotic cell death. Additionally, oxidative stress responses were significantly blocked by SA, including reactive oxygen species (ROS) overproduction and decreased expression levels of antioxidant proteins. Notably, SA also attenuated mitochondrial dysfunction and endoplasmic reticulum (ER) stress. Moreover, SA dramatically inhibited the activation of mitogen-activated protein kinase (MAPK) proteins. Taken together, our findings highlight the potential PD prevention effects of SA, as well as its underlying mechanisms, making this compound a promising prevention and treatment agent for PD.
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