Summary
Ligustrazine, an alkaloid extracted from the traditional Chinese herbal medicine Ligusticum Chuanxiong Hort, has been clinically applied to treat the cerebrovascular diseases. Hyperhomocysteinemia (Hhcy) is an independent risk factor for Alzheimer’s disease (AD). Memory deficits can be caused by Hhcy via pathologies of AD-like tau and amyloid-β (Aβ) in the hippocampus. Here, we investigated whether homocysteine (Hcy) can induce AD-like pathologies and the effects of ligustrazine on these pathologies. The Hcy rat model was constructed by 14-day Hcy injection via vena caudalis, and rats were treated with daily intragastric administration of ligustrazine at the same time. We found that the pathologies of tau and Aβ were induced by Hcy in the hippocampus, while the Hcy-induced tau hyperphosphorylation and Aβ accumulation could be markedly attenuated by simultaneous ligustrazine treatment. Our data demonstrate that ligustrazine may be used as a promising neuroprotective agent to treat the Hcy-induced AD-like pathologies.
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This project was supported by grants from Changzhou Sci & Tech Program (No. CJ20190063, No. CJ20200090), Young Talent Development Plan of Changzhou Health Commission (No. CZQM2020078, and No. CZQM2020063), China Postdoctoral Science Foundation (No. 2020M670012ZX), National Natural Science Foundation of China (No. 81803498), Jiangsu Planned Projects for Postdoctoral Research Funds (No. 2019K157), and “Mass Entrepreneurship and Innovation Plan” of Jiangsu Province (No. QT201919).
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Zhang, Q., Wang, J., Zhu, L. et al. Ligustrazine Attenuates Hyperhomocysteinemia-induced Alzheimer-like Pathologies in Rats. CURR MED SCI 41, 548–554 (2021). https://doi.org/10.1007/s11596-021-2379-1
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DOI: https://doi.org/10.1007/s11596-021-2379-1