Volume 39, Issue 8 pp. 2188-2194
Concise Report

Harpagide Inhibits Microglial Activation and Protects Dopaminergic Neurons as Revealed by Nanoelectrode Amperometry

Fu-Li Zhang

Fu-Li Zhang

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072 China

These authors contributed equally to this work.

Dedicate to the Special Issue of In Situ Target Biomolecule Analysis in Confined Nanospace

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Yun Tang

Yun Tang

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072 China

These authors contributed equally to this work.

Dedicate to the Special Issue of In Situ Target Biomolecule Analysis in Confined Nanospace

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Hong Jiang

Hong Jiang

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072 China

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Xiao-Ke Yang

Xiao-Ke Yang

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072 China

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Wei-Hua Huang

Corresponding Author

Wei-Hua Huang

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072 China

E-mail: [email protected]Search for more papers by this author
First published: 15 April 2021
Citations: 2

Main observation and conclusion

Parkinson's disease (PD) is one of the most common neurogenerative diseases (NDDs), characterized as less neurotransmitter release and loss of dopaminergic (DAergic) neurons with microglial inflammatory response as a key player. Natural product harpagide with anti-inflammatory function is a potential therapeutic drug of PD, but its role towards microglial activation and inflammation-mediated neuronal injury remained unsure. In this work, taking advantage of nanoelectrode amperometry with high temporal-spatial resolution, we used nanowire electrodes (NWEs) to monitor intracellular reactive oxygen species (ROS) level and carbon fiber nanoelectrodes (CFNEs) to detect synaptic dopamine exocytosis, to explore the effect of harpagide in modulating microglial inflammatory reaction and protecting DAergic neurons in neuron-microglia co-culture system. The results indicate that harpagide inhibits microglia from activation induced by LPS/IFN-γ and generation of ROS, therefore reduces inflammation-mediated neural injury and maintains dopamine exocytosis function. These conclusions establish that harpagide possesses promising avenues for preventive or therapeutic interventions against PD and other NDDs.image

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