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Efficacy of catalpol as protectant against oxidative stress and mitochondrial dysfunction on rotenone-induced
Yu-Rong Mao1, Lan Jiang, Yan-Long Duan
1School of Environmental and Biological Science & Technology, Dalian University of Technology, Dalian 116024, China.
Abstract:
Rotenone, a specific inhibitor of mitochondrial complex I, reproduces many features of Parkinson's disease. The aim of the study was carried out to investigate how rotenone affected the mitochondrial function and antioxidant/oxidant parameters of mouse striatum, and secondly, to evaluate the ameliorating effects of catalpol against rotenone-induced damage. Our results showed that rotenone induced significant changes in mitochondrial function such as complex I activity and mitochondrial membrane potential decreased, and enhanced antioxidant status as glutathione depletion, enzymatic (glutathione peroxidase and superoxide dismutase) disorders, and increased lipid peroxidation. Catalpol increased complex I, superoxide dismutase and glutathione peroxidase activities, reduced lipid peroxidation and loss of mitochondrial membrane potential in rotenone-treated mice. These in vivo data indicated that catalpol might have protection against deleterious mouse damage caused by rotenone.
Insights
Catalpol protected mouse striatum from rotenone-induced Parkinson
Area of Science:
- Neuroscience
- Mitochondrial Biology
- Pharmacology
Background:
- Rotenone, a mitochondrial complex I inhibitor, models Parkinson's disease features.
- Parkinson's disease involves mitochondrial dysfunction and oxidative stress.
Purpose of the Study:
- Investigate rotenone's impact on mouse striatal mitochondrial function and oxidative stress.
- Evaluate catalpol's protective effects against rotenone-induced neurotoxicity.
Main Methods:
- Mice were treated with rotenone to induce Parkinson's-like pathology.
- Mitochondrial complex I activity, membrane potential, and oxidative stress markers were assessed.
- The effects of catalpol administration were evaluated in rotenone-exposed mice.
Main Results:
- Rotenone decreased mitochondrial complex I activity and membrane potential.
- Rotenone increased lipid peroxidation and disrupted antioxidant systems (glutathione, SOD, GPx).
- Catalpol treatment reversed rotenone-induced mitochondrial dysfunction and oxidative damage.
Conclusions:
- Rotenone induces significant mitochondrial dysfunction and oxidative stress in the mouse striatum.
- Catalpol demonstrates neuroprotective potential against rotenone-induced damage.
- Catalpol may be a therapeutic candidate for Parkinson's disease.
