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Neuroprotective Effect of Dioscin on the Aging Brain
Yan Qi1, Ruomiao Li2, Lina Xu3
1College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China. friendqy@163.com.
Molecules (Basel, Switzerland)
|April 3, 2019
Summary
Dioscin, a natural compound, effectively combats brain aging by reducing oxidative stress and inflammation. This study demonstrates its potential as a therapeutic agent for age-related cognitive decline.
Area of Science:
- Neuroscience
- Pharmacology
- Biochemistry
Background:
- Dioscin, a natural product, exhibits diverse pharmacological activities.
- The role of dioscin in brain aging remains unexplored.
- Brain aging is characterized by oxidative stress and inflammation.
Purpose of the Study:
- To investigate the neuroprotective effects of dioscin against brain aging.
- To evaluate dioscin's impact on oxidative stress and inflammation in aging models.
- To elucidate the underlying mechanisms of dioscin's action.
Main Methods:
- In vitro: Hydrogen peroxide (H₂O₂)-treated PC12 cells.
- In vivo: D-galactose-induced aging rat models.
- Assessed cell viability, oxidative stress markers (ROS, LDH, protein carbonyl, SOD, GSH, GSH-Px, MDA, NOS), cognitive function, and inflammatory markers (TNF-α, IL-1β, IL-6, CYP2E1, HMGB1).
- Investigated MAPK and Nrf2/ARE signaling pathways.
Main Results:
- Dioscin enhanced PC12 cell viability and reduced oxidative stress markers.
- Dioscin improved spatial learning and memory in aging rats.
- Dioscin restored antioxidant enzyme levels and reduced lipid peroxidation in brain tissue.
- Dioscin modulated MAPK and Nrf2/ARE pathways, decreased oxidative stress, and inhibited inflammation.
Conclusions:
- Dioscin exhibits significant neuroprotective effects against brain aging.
- These effects are mediated by the reduction of oxidative stress and inflammation.
- Dioscin holds promise as a clinical candidate for treating brain aging.
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