Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Levistilide A Exerts a Neuroprotective Effect by Suppressing Glucose Metabolism Reprogramming and Preventing Microglia Polarization Shift

Version 1 : Received: 26 January 2024 / Approved: 26 January 2024 / Online: 26 January 2024 (12:31:09 CET)

A peer-reviewed article of this Preprint also exists.

Zhang, M.; Duan, C.; Lin, W.; Wu, H.; Chen, L.; Guo, H.; Yu, M.; Liu, Q.; Nie, Y.; Wang, H.; Wang, S. Levistilide A Exerts a Neuroprotective Effect by Suppressing Glucose Metabolism Reprogramming and Preventing Microglia Polarization Shift: Implications for Parkinson’s Disease. Molecules 2024, 29, 912. Zhang, M.; Duan, C.; Lin, W.; Wu, H.; Chen, L.; Guo, H.; Yu, M.; Liu, Q.; Nie, Y.; Wang, H.; Wang, S. Levistilide A Exerts a Neuroprotective Effect by Suppressing Glucose Metabolism Reprogramming and Preventing Microglia Polarization Shift: Implications for Parkinson’s Disease. Molecules 2024, 29, 912.

Abstract

The microglia, displaying diverse phenotypes, play a significant regulatory role in the development, progression, and prognosis of Parkinson's disease. Research has established that glycolytic reprogramming serves as a critical regulator of inflammation initiation in pro-inflammatory macrophages. Furthermore, the modulation of glycolytic reprogramming has the potential to reverse the polarized state of these macrophages. Previous studies have shown that levetistilide A (LA), a phthalide component derived from Angelica sinensis, possesses a range of pharmacological effects, including anti-inflammatory, antioxidant, and neuroprotective properties. In our study, we have examined the impact of LA on inflammatory cytokines and glucose metabolism in microglia induced by lipopolysaccharide (LPS). Furthermore, we explored the effects of LA on the AMPK/mTOR pathway and assessed its neuroprotective potential both in vitro and in vivo. The findings revealed that LA notably diminished the expression of M1 pro-inflammatory factors induced by LPS in microglia, while leaving M2 anti-inflammatory factor expression unaltered. Additionally, it reduced ROS production and suppressed IκB-α phosphorylation levels as well as NF-κB p65 nuclear translocation. Notably, LA exhibited the ability to reverse microglial glucose metabolism reprogramming and modulate the phosphorylation levels of AMPK/mTOR. In vivo experiments further corroborated these findings, demonstrating that LA mitigated the death of TH-positive dopaminergic neurons and reduced microglia activation in the ventral SNpc brain region of the midbrain and the striatum. In summary, LA exhibited neuroprotective benefits by modulating the polarization state of microglia and altering glucose metabolism, highlighting its therapeutic potential.

Keywords

Levistilide A, microglia, metabolic reprogramming, Parkinson's disease

Subject

Medicine and Pharmacology, Complementary and Alternative Medicine

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