Eriodictyol and Homoeriodictyol Improve Memory Impairment in Aβ<sub>25–35</sub>-Induced Mice by Inhibiting the NLRP3 Inflammasome
(1) Alzheimer’s disease (AD) is a neurodegenerative disorder, and it is now widely accepted that neuroinflammation plays a key role in its pathogenesis. Eriodictyol (Eri) and homoeriodictyol (Hom), dihydroflavonoids extracted from a variety of plants, have been confirmed to display a relationship wi...
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MDPI AG
2022-04-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/8/2488 |
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| author | Pengli Guo Mengnan Zeng Shengchao Wang Bing Cao Meng Liu Yuhan Zhang Jufang Jia Qinqin Zhang Beibei Zhang Ru Wang Xiaoke Zheng Weisheng Feng |
| author_facet | Pengli Guo Mengnan Zeng Shengchao Wang Bing Cao Meng Liu Yuhan Zhang Jufang Jia Qinqin Zhang Beibei Zhang Ru Wang Xiaoke Zheng Weisheng Feng |
| author_sort | Pengli Guo |
| collection | DOAJ |
| description | (1) Alzheimer’s disease (AD) is a neurodegenerative disorder, and it is now widely accepted that neuroinflammation plays a key role in its pathogenesis. Eriodictyol (Eri) and homoeriodictyol (Hom), dihydroflavonoids extracted from a variety of plants, have been confirmed to display a relationship with neuroprotection. (2) Methods: An AD mouse model was constructed by intracerebroventricular (ICV) injection of the Aβ<sub>25–35</sub> peptide, and Eri and Hom were administered orally for 4 weeks. UPLC-MS/MS was used to determine whether Eri and Hom cross the blood–brain barrier to exert their therapeutic effects. Histological changes in the brain and levels of Aβ were evaluated, and Y-maze and new object recognition experiments were conducted to assess the effects of Eri and Hom on Aβ<sub>25–35</sub>-induced memory impairment in mice. The levels of oxidative stress and apoptosis in peripheral immune cells and progenitor cells in the hippocampal region were analyzed by flow cytometry and in vitro assays. Western blotting and enzyme-linked immunosorbent assays (ELISA) were used to measure the expression levels of NLRP3 inflammasome-related proteins and inflammatory factors in the brain. The effect of nigericin (an agonist of the NLRP3 inflammasome) on Eri and Hom intervention in LPS-induced N9 microglia was examined using a High Content Screening System. (3) Results: Eri and Hom reduced neuronal damage in mouse brain tissue, decreased Aβ levels in the brain, downregulated oxidative stress and apoptosis levels, and improved learning and memory capacity by crossing the blood–brain barrier to exert its effects. Moreover, Eri and Hom inhibited NLRP3 inflammasome activation and ameliorated immune cell disorder. Furthermore, the effect of Eri and Hom on LPS-induced N9 microglia disappeared after the addition of nigericin to agonize NLRP3 receptors. (4) Conclusions: Eri and Hom improved Aβ<sub>25–35</sub>-induced memory impairment in mice by inhibiting the NLRP3 inflammasome. |
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| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T04:21:42Z |
| publishDate | 2022-04-01 |
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| spelling | doaj.art-2b9a53a64c864010b6ed7b79383c70132023-12-03T13:46:27ZengMDPI AGMolecules1420-30492022-04-01278248810.3390/molecules27082488Eriodictyol and Homoeriodictyol Improve Memory Impairment in Aβ<sub>25–35</sub>-Induced Mice by Inhibiting the NLRP3 InflammasomePengli Guo0Mengnan Zeng1Shengchao Wang2Bing Cao3Meng Liu4Yuhan Zhang5Jufang Jia6Qinqin Zhang7Beibei Zhang8Ru Wang9Xiaoke Zheng10Weisheng Feng11College of Pharmacy, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou 450046, ChinaCollege of Pharmacy, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou 450046, ChinaCollege of Pharmacy, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou 450046, ChinaCollege of Pharmacy, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou 450046, ChinaCollege of Pharmacy, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou 450046, ChinaCollege of Pharmacy, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou 450046, ChinaCollege of Pharmacy, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou 450046, ChinaCollege of Pharmacy, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou 450046, ChinaCollege of Pharmacy, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou 450046, ChinaCollege of Pharmacy, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou 450046, ChinaCollege of Pharmacy, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou 450046, ChinaCollege of Pharmacy, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou 450046, China(1) Alzheimer’s disease (AD) is a neurodegenerative disorder, and it is now widely accepted that neuroinflammation plays a key role in its pathogenesis. Eriodictyol (Eri) and homoeriodictyol (Hom), dihydroflavonoids extracted from a variety of plants, have been confirmed to display a relationship with neuroprotection. (2) Methods: An AD mouse model was constructed by intracerebroventricular (ICV) injection of the Aβ<sub>25–35</sub> peptide, and Eri and Hom were administered orally for 4 weeks. UPLC-MS/MS was used to determine whether Eri and Hom cross the blood–brain barrier to exert their therapeutic effects. Histological changes in the brain and levels of Aβ were evaluated, and Y-maze and new object recognition experiments were conducted to assess the effects of Eri and Hom on Aβ<sub>25–35</sub>-induced memory impairment in mice. The levels of oxidative stress and apoptosis in peripheral immune cells and progenitor cells in the hippocampal region were analyzed by flow cytometry and in vitro assays. Western blotting and enzyme-linked immunosorbent assays (ELISA) were used to measure the expression levels of NLRP3 inflammasome-related proteins and inflammatory factors in the brain. The effect of nigericin (an agonist of the NLRP3 inflammasome) on Eri and Hom intervention in LPS-induced N9 microglia was examined using a High Content Screening System. (3) Results: Eri and Hom reduced neuronal damage in mouse brain tissue, decreased Aβ levels in the brain, downregulated oxidative stress and apoptosis levels, and improved learning and memory capacity by crossing the blood–brain barrier to exert its effects. Moreover, Eri and Hom inhibited NLRP3 inflammasome activation and ameliorated immune cell disorder. Furthermore, the effect of Eri and Hom on LPS-induced N9 microglia disappeared after the addition of nigericin to agonize NLRP3 receptors. (4) Conclusions: Eri and Hom improved Aβ<sub>25–35</sub>-induced memory impairment in mice by inhibiting the NLRP3 inflammasome.https://www.mdpi.com/1420-3049/27/8/2488eriodictyolhomoeriodictyolNLRP3 inflammasomeAlzheimer’s diseaseAβ<sub>25–35</sub> |
| spellingShingle | Pengli Guo Mengnan Zeng Shengchao Wang Bing Cao Meng Liu Yuhan Zhang Jufang Jia Qinqin Zhang Beibei Zhang Ru Wang Xiaoke Zheng Weisheng Feng Eriodictyol and Homoeriodictyol Improve Memory Impairment in Aβ<sub>25–35</sub>-Induced Mice by Inhibiting the NLRP3 Inflammasome Molecules eriodictyol homoeriodictyol NLRP3 inflammasome Alzheimer’s disease Aβ<sub>25–35</sub> |
| title | Eriodictyol and Homoeriodictyol Improve Memory Impairment in Aβ<sub>25–35</sub>-Induced Mice by Inhibiting the NLRP3 Inflammasome |
| title_full | Eriodictyol and Homoeriodictyol Improve Memory Impairment in Aβ<sub>25–35</sub>-Induced Mice by Inhibiting the NLRP3 Inflammasome |
| title_fullStr | Eriodictyol and Homoeriodictyol Improve Memory Impairment in Aβ<sub>25–35</sub>-Induced Mice by Inhibiting the NLRP3 Inflammasome |
| title_full_unstemmed | Eriodictyol and Homoeriodictyol Improve Memory Impairment in Aβ<sub>25–35</sub>-Induced Mice by Inhibiting the NLRP3 Inflammasome |
| title_short | Eriodictyol and Homoeriodictyol Improve Memory Impairment in Aβ<sub>25–35</sub>-Induced Mice by Inhibiting the NLRP3 Inflammasome |
| title_sort | eriodictyol and homoeriodictyol improve memory impairment in aβ sub 25 35 sub induced mice by inhibiting the nlrp3 inflammasome |
| topic | eriodictyol homoeriodictyol NLRP3 inflammasome Alzheimer’s disease Aβ<sub>25–35</sub> |
| url | https://www.mdpi.com/1420-3049/27/8/2488 |
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