期刊
NUTRIENTS
卷 13, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/nu13020282
关键词
cognitive decline; Alzheimer’ s disease; oxidative stress; natural antioxidants; polyphenols
Research has shown the significance of oxidative stress in the pathogenesis and progression of dementia, highlighting the limitations of drugs targeting single pathways. Natural antioxidants offer potential in combating dementia by affecting multiple pathways involved in neurodegeneration and neuroinflammation, but face challenges in human trials related to bioavailability and treatment timing.
Dementia, and especially Alzheimer's disease (AD), puts significant burden on global healthcare expenditure through its increasing prevalence. Research has convincingly demonstrated the implication of oxidative stress in the pathogenesis of dementia as well as of the conditions which increase the risk of developing dementia. However, drugs which target single pathways have so far failed in providing significant neuroprotection. Natural antioxidants, due to their effects in multiple pathways through which oxidative stress leads to neurodegeneration and triggers neuroinflammation, could prove valuable weapons in our fight against dementia. Although efficient in vitro and in animal models of AD, natural antioxidants in human trials have many drawbacks related to the limited bioavailability, unknown optimal dose, or proper timing of the treatment. Nonetheless, trials evaluating several of these natural compounds are ongoing, as are attempts to modify these compounds to achieve improved bioavailability.
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