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Wang H, Lu J, Gao WC, Ma X, Li N, Ding Z, Wu C, Zhu M, Qiao G, Xiao C, Zhang C, Chen C, Weng Z, Yang W, Zheng CB. Donepezil down-regulates propionylation, 2-hydroxyisobutyrylation, butyrylation, succinylation, and crotonylation in the brain of bilateral common carotid artery occlusion-induced vascular dementia rats. Clin Exp Pharmacol Physiol 2020; 47:1731-1739. [PMID: 32424975 DOI: 10.1111/1440-1681.13352] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 04/20/2020] [Accepted: 05/12/2020] [Indexed: 11/26/2022]
Abstract
Vascular dementia (VaD), caused by stroke or small vessel disease, is the second-most common type of dementia after Alzheimer's disease (AD). Donepezil is an acetylcholinesterase inhibitor that is currently used in patients with mild to moderate AD, and has recently been shown to improve cognitive performance in patients with VaD. In this study, we evaluated the effects of donepezil on VaD, and investigated the underlying molecular mechanisms of action. VaD was established by ligation of the bilateral common carotid artery occlusion (BCCAO). Executive function was tested by the Morris water maze (MWM) test and the attentional set shifting task (ASST). Our results showed that donepezil improved executive dysfunction and cognitive flexibility in BCCAO rats. In addition, we showed that donepezil treatment decreased the level of Aβ1-42 in BCCAO rats by enzyme-linked immunosorbent assay. Post-translational modifications (PTMs) are known to be critical mechanisms in the regulation of various cellular processes. Furthermore, PTMs have been linked to the central nervous system, which highlights the importance of PTMs in neurodegenerative diseases. In this study, we used western blot analysis to identify several novel PTMs in the hippocampus of BCCAO rats that were treated with or without donepezil. The data revealed that lysine propionylation, 2-hydroxyisobutyrylation, butyrylation, succinylation, and crotonylation were elevated in the hippocampus of BCCAO rats when compared to sham rats. This increase was abolished by donepezil treatment. Taken together, we speculate that donepezil treatment improves cognitive function in our animal model of VaD, possibly by reducing aberrant acyl-PTMs.
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Affiliation(s)
- Hongyan Wang
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Jun Lu
- Department of Pharmacology, Guilin Medical University, Guilin, China
| | - Wen-Cong Gao
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Xin Ma
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Na Li
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Zhituan Ding
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Chunmei Wu
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Maoceng Zhu
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Guanrong Qiao
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Chuang Xiao
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Changhong Zhang
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Chen Chen
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Zhiying Weng
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Weimin Yang
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
| | - Chang-Bo Zheng
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China
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