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Yong S, Yuhan Z, Shanshan C, Xin W, Leilei S, Liu J. The effect and mechanism of palmar ginseng in type 2 diabetic cognitive impairment. Heliyon 2024; 10:e32525. [PMID: 38988538 PMCID: PMC11233887 DOI: 10.1016/j.heliyon.2024.e32525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 06/04/2024] [Accepted: 06/05/2024] [Indexed: 07/12/2024] Open
Abstract
Objective To investigate the therapeutic effect of palmar ginseng on cognitive impairment in rats with type 2 diabetes, evaluate its neuroprotective effects, and explore its underlying mechanism. Methods A rat model of diabetic cognitive impairment (DCI) was established by feeding with homemade high-fat, high-sugar chow combined with intraperitoneal injection of streptozotocin (STZ). Rats were continually fed high-fat, high-sugar chow for 60 days after successful induction of the model. Palmar ginseng was administered via gavage. The Morris test was performed after 30 days of treatment. At the end of the test, blood samples were collected, and the activities of IL-6, IL-10, TNF-α, and IL-1β in rat serum. Pathological changes in hippocampal tissues were observed by Haematoxylin-eosin (HE) staining of the brain, activation of microglia in hippocampal tissues was detected by immunofluorescence, and the expression of PI3K/Akt/mTOR and JAK2/STAT3 proteins in the hippocampal tissues by Western blot. Results During the administration of palmar Ginseng, the body weight and blood glucose levels of DCI rats were measured weekly, with results showing that Palmar Ginseng effectively reduced blood glucose levels and body weight of DCI rats. Behavioural tests in the water maze indicated that palmar ginseng effectively improved the learning and memory ability of DCI rats. HE and immunofluorescence staining showed that palmar ginseng improved DCI in rats, ameliorated hippocampal neuronal damage, and improved microglial activation. ELISA showed that palmar ginseng significantly reduced the expression of pro-inflammatory factors in the serum of DCI rats. Increased expression of anti-inflammatory factors was observed, and Western blot analysis showed that Palmar Ginseng regulated PI3K/Akt/mTOR and JAK2/STAT3 protein expression, promoted the phosphorylation of PI3K/Akt/mTOR, and inhibited JAK2/STAT3 protein phosphorylation in rat hippocampal tissues as well as in BV2 cells. Conclusions Palmar ginseng may improve the onset and development of DCI by upregulating the phosphorylation of proteins in the PI3K/Akt/mTOR pathway.
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Affiliation(s)
- Shi Yong
- Department of Pharmacology, Shaanxi University of Chinese Medicine, No. 1 Middle Section of Century Avenue, Xianyang, 712046, People's Republic of China
| | - Zhang Yuhan
- Department of Pharmacology, Shaanxi University of Chinese Medicine, No. 1 Middle Section of Century Avenue, Xianyang, 712046, People's Republic of China
| | - Cao Shanshan
- Department of Pharmacology, Shaanxi University of Chinese Medicine, No. 1 Middle Section of Century Avenue, Xianyang, 712046, People's Republic of China
| | - Wang Xin
- Department of Pharmacology, Shaanxi University of Chinese Medicine, No. 1 Middle Section of Century Avenue, Xianyang, 712046, People's Republic of China
| | - Shi Leilei
- Department of Pharmacology, Shaanxi University of Chinese Medicine, No. 1 Middle Section of Century Avenue, Xianyang, 712046, People's Republic of China
| | - Jiping Liu
- Department of Pharmacology, Shaanxi University of Chinese Medicine, No. 1 Middle Section of Century Avenue, Xianyang, 712046, People's Republic of China
- Key Laboratory of Pharmacodynamic Mechanism and Material Basis of Traditional Chinese Medicine, Shaanxi Administration of Traditional Chinese Medicine, Xianyang, 712046, People's Republic of China
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Bazzicalupo M, Calevo J, Smeriglio A, Cornara L. Traditional, Therapeutic Uses and Phytochemistry of Terrestrial European Orchids and Implications for Conservation. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12020257. [PMID: 36678970 PMCID: PMC9863304 DOI: 10.3390/plants12020257] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 12/30/2022] [Accepted: 01/03/2023] [Indexed: 06/12/2023]
Abstract
The Orchidaceae family accounts for about 28,000 species, and most of them are mentioned in the folk medicine of nations around the world. The use of terrestrial orchids in European and Mediterranean regions has been reported since ancient times, but little information is available on their medicinal properties, as well as on their phytochemicals and biological activities. However, plant collection for human use is still listed as one of the main threats for terrestrial orchids, alongside other menacing factors such as wrong habitat management and disturbance to symbionts, such as pollinators and mycorrhizal fungi. Therefore, the primary aim of this review was to resume and discuss available information regarding the past and current popular uses of European orchids. We then grouped phytochemical data to evaluate the presence of bioactive compounds of pharmacological relevance, and we discussed whether these could support the therapeutic employment of the different organs. Finally, we briefly debated the sustainability of orchid utilizations, considering the different threatening factors and conservation actions including plant propagation methods.
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Affiliation(s)
- Miriam Bazzicalupo
- Department of Earth, Environment and Life Sciences (DISTAV), University of Genova, 16132 Genova, Italy
- CREA—Research Centre for Vegetable and Ornamental Crops, Council for Agricultural Research and Economics, 18038 Sanremo, Italy
| | - Jacopo Calevo
- Department of Ecosystem Stewardship, Jodrell Laboratory, Royal Botanic Gardens, KEW, Richmond, Surrey TW9 3DS, UK
- School of Molecular and Life Sciences, Curtin University, Perth, WA 6102, Australia
| | - Antonella Smeriglio
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, 98166 Messina, Italy
| | - Laura Cornara
- Department of Earth, Environment and Life Sciences (DISTAV), University of Genova, 16132 Genova, Italy
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Li XW, Lu YY, Zhang SY, Sai NN, Fan YY, Cheng Y, Liu QS. Mechanism of Neural Regeneration Induced by Natural Product LY01 in the 5×FAD Mouse Model of Alzheimer's Disease. Front Pharmacol 2022; 13:926123. [PMID: 35814256 PMCID: PMC9258960 DOI: 10.3389/fphar.2022.926123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 05/31/2022] [Indexed: 12/28/2022] Open
Abstract
Background: A sharp decline in neural regeneration in patients with Alzheimer's disease (AD) exacerbates the decline of cognition and memory. It is of great significance to screen for innovative drugs that promote endogenous neural regeneration. Cytisine N-methylene-(5,7,4'-trihydroxy)-isoflavone (LY01) is a new compound isolated from the Chinese herbal medicine Sophora alopecuroides with both isoflavone and alkaloid characteristic structures. Its pharmacological effects are worth studying. Objective: This study was designed to determine whether LY01 delays the cognitive and memory decline in the early stage of AD and whether this effect of LY01 is related to promoting neural regeneration. Methods: Eight-week-old 5×Familial Alzheimer's Disease (5×FAD) mice were used as disease models of early AD. Three doses of LY01 administered in two courses (2 and 5 weeks) of treatment were tested. Cognition, memory, and anxiety-like behaviors in mice were evaluated by the Morris water maze, fear conditioning, and open field experiments. Regeneration of neurons in the mouse hippocampus was observed using immunofluorescence staining. The effect of LY01 on cell regeneration was also demonstrated using a series of tests on primary cultured neurons, astrocytes, and neural stem cells (NSCs). In addition, flow cytometry and transcriptome sequencing were carried out to preliminarily explored the mechanisms. Results: We found that LY01 reduced the decline of cognition and memory in the early stage of 5×FAD mice. This effect was related to the proliferation of astrocytes, the proliferation and migration of NSCs, and increases in the number of new cells and neural precursor cells in the dentate gyrus area of 5×FAD mice. This phenomenon could be observed both in 2-week-old female and 5-week-old male LY01-treated 5×FAD mice. The neuronal regeneration induced by LY01 was related to the regulation of the extracellular matrix and associated receptors, and effects on the S phase of the cell cycle. Conclusion: LY01 increases the proliferation of NSCs and astrocytes and the number of neural precursor cells in the hippocampus, resulting in neural regeneration in 5×FAD mice by acting on the extracellular matrix and associated receptors and regulating the S phase of the cell cycle. This provides a new idea for the early intervention and treatment of AD.
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Affiliation(s)
- Xiao-Wan Li
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, Minzu University of China, Beijing, China
- Center for Life Sciences, School of Life Science and Technology, Harbin Institute of Technology, Harbin, China
| | - Yang-Yang Lu
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, Minzu University of China, Beijing, China
| | - Shu-Yao Zhang
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, Minzu University of China, Beijing, China
| | - Ning-Ning Sai
- University Hospital, Tianjin Normal University, Tianjin, China
| | - Yu-Yan Fan
- Traditional Chinese Medicine Department, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yong Cheng
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, Minzu University of China, Beijing, China
- Institute of National Security, Minzu University of China, Beijing, China
| | - Qing-Shan Liu
- Key Laboratory of Ethnomedicine for Ministry of Education, Center on Translational Neuroscience, Minzu University of China, Beijing, China
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Jean WH, Huang CT, Hsu JH, Chiu KM, Lee MY, Shieh JS, Lin TY, Wang SJ. Anticonvulsive and Neuroprotective Effects of Eupafolin in Rats Are Associated with the Inhibition of Glutamate Overexcitation and Upregulation of the Wnt/β-Catenin Signaling Pathway. ACS Chem Neurosci 2022; 13:1594-1603. [PMID: 35500294 DOI: 10.1021/acschemneuro.2c00227] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Several plant compounds have been found to possess neuroactive properties. The aim of this study was to investigate the anticonvulsant effect of eupafolin, a major active component extracted from Salvia plebeia, a herb used in traditional medicine for its anti-inflammatory properties. To this end, we assessed the anticonvulsant effects of eupafolin in rats intraperitoneally (i.p.) injected with kainic acid (KA) to elucidate this mechanism. Treatment with eupafolin (i.p.) for 30 min before KA administration significantly reduced behavioral and electrographic seizures induced by KA, similar to carbamazepine (i.p.), a widely used antiepileptic drug. Eupafolin treatment also significantly decreased KA seizure-induced neuronal cell death and glutamate elevation in the hippocampus. In addition, eupafolin notably reversed KA seizure-induced alterations in α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor subunit GluR2, glutamate decarboxylase 67 (GAD67, GABAergic enzyme), and Wnt signaling-related proteins, including porcupine, Wnt1, phosphorylated-glycogen synthase kinase-3β, β-catenin, and Bcl-2 in the hippocampus. Furthermore, the increased level of Dickkopf-related protein 1 (Dkk-1, a Wnt signaling antagonist) and the decreased level of Disheveled1 (Dvl-1, a Wnt signaling activator) in the hippocampus of KA-treated rats were reversed by eupafolin. This study provides evidence of the anticonvulsant and neuroprotective properties of eupafolin and of the involvement of regulation of glutamate overexcitation and Wnt signaling in the mechanisms of these properties. These findings support the benefits of eupafolin in treating epilepsy.
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Affiliation(s)
- Wei-Horng Jean
- Department of Anesthesiology, Far-Eastern Memorial Hospital, New Taipei City 22060, Taiwan
- Department of Mechanical Engineering, Yuan Ze University, Taoyuan 32003, Taiwan
| | - Chih-Ta Huang
- Department of Neurosurgery, Cathay General Hospital, Taipei City 106, Taiwan
| | - Jung-Hsuan Hsu
- Graduate Institute of Biomedical and Pharmaceutical Science, Fu Jen Catholic University, New Taipei City 24205, Taiwan
| | - Kuan-Ming Chiu
- Division of Cardiovascular Surgery, Cardiovascular Center, Far-Eastern Memorial Hospital, New Taipei City 22060, Taiwan
- Department of Electrical Engineering, Yuan Ze University, Taoyuan 32003, Taiwan
| | - Ming-Yi Lee
- Department of Medical Research, Far-Eastern Memorial Hospital, New Taipei City 22060, Taiwan
| | - Jiann-Shing Shieh
- Department of Mechanical Engineering, Yuan Ze University, Taoyuan 32003, Taiwan
| | - Tzu-Yu Lin
- Department of Anesthesiology, Far-Eastern Memorial Hospital, New Taipei City 22060, Taiwan
- Department of Mechanical Engineering, Yuan Ze University, Taoyuan 32003, Taiwan
| | - Su-Jane Wang
- School of Medicine, Fu Jen Catholic University, New Taipei City 24205, Taiwan
- Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan
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Lang XY, Hu Y, Bai JP, Wang J, Qin XY, Lan R. Coeloglossum viride Var. Bracteatum Extract Attenuates MPTP-Induced Neurotoxicity in vivo by Restoring BDNF-TrkB and FGF2-Akt Signaling Axis and Inhibiting RIP1-Driven Inflammation. Front Pharmacol 2022; 13:903235. [PMID: 35571135 PMCID: PMC9096617 DOI: 10.3389/fphar.2022.903235] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 04/13/2022] [Indexed: 11/13/2022] Open
Abstract
The tuber of Coeloglossum viride var. bracteatum is a Tibetan medicine that has been used for generations as a tonic for Yang and Qi, tranquilizing, to enhance intelligence and to promote longevity. We have previously characterized the constituents of Coeloglossum viride var. bracteatum extract (CE) and investigated its anti-Alzheimer's disease (AD) effect in mice models. However, the exact role of CE in Parkinson's disease (PD), especially the neurotrophic and inflammatory pathways regulated by CE, remains unknown. In this study, we investigated the anti-PD effects of CE in an MPTP-induced acute mouse model and its underlying mechanisms, focusing on BDNF, FGF2 and their mediated signaling pathways and RIP1-driven inflammatory signaling axis. Pole test and traction test were performed for behavioral analysis. RT-PCR, IHC and Western blotting were performed to assay the mRNA, tissues, and protein, respectively. We found that CE improved dyskinesia in MPTP-intoxicated mice, which was confirmed by the pole test and traction test. Also, oxidative stress and astrocyte activation and inflammation were alleviated. MPTP-intoxication disrupted the levels of BDNF, FGF2 and their mediated signaling pathways, triggered elevation of pro-inflammatory factors such as TNF-α, IL-1β, and IL-6, and activated RIP1-driven inflammatory axis. However, CE restored the levels of BDNF, FGF2 and TrkB/Akt signaling pathways while inhibiting the RIP1-driven inflammatory signaling axis, thereby inhibiting apoptosis, preventing loss of nigrostriatal neurons, and maintaining cellular homeostasis. Thus, CE is a promising agent for the treatment of PD.
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Affiliation(s)
- Xiu-Yuan Lang
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Yang Hu
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Jin-Peng Bai
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Jun Wang
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Xiao-Yan Qin
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Rongfeng Lan
- Department of Cell Biology and Medical Genetics, School of Basic Medical Sciences, Shenzhen University Health Science Center, Shenzhen, China
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Hu Y, Fang X, Wang J, Ren TT, Zhao YY, Dai JF, Qin XY, Lan R. Astragalin attenuates AlCl3/D-galactose-induced aging-like disorders by inhibiting oxidative stress and neuroinflammation. Neurotoxicology 2022; 91:60-68. [DOI: 10.1016/j.neuro.2022.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 04/17/2022] [Accepted: 05/04/2022] [Indexed: 12/21/2022]
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Li XX, Lang XY, Ren TT, Wang J, Lan R, Qin XY. Coeloglossum viride var. bracteatum extract attenuates Aβ-induced toxicity by inhibiting RIP1-driven inflammation and necroptosis. JOURNAL OF ETHNOPHARMACOLOGY 2022; 282:114606. [PMID: 34506939 DOI: 10.1016/j.jep.2021.114606] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/21/2021] [Accepted: 09/04/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Tibetan ginseng named Wangla (tuber of Coeloglossum viride var. bracteatum) is a traditional tonic that has Yang-strengthening and qi-enhancing, tranquilizing, intelligence-enhancing and longevity-enhancing properties. It has been used to treat impotence, spermatorrhea, anemia and insomnia. Therefore, its characteristic components and neuronal modulating effects were studied. AIM OF THE STUDY To investigate the elimination of Aβ-induced toxicity by CE and to elucidate the molecular mechanisms involving BDNF, FGF2, and their related signaling axis, and the RIP1-driven inflammatory pathway. MATERIALS AND METHODS We established Aβ-induced toxicity models in cultured neurons and ICR mice, respectively. MWM and fear conditioning tests were performed for behavioral analysis of cognitive functions in mice. Western blot was used to investigate the levels of BDNF, FGF2, and their downstream effector TrkB/Akt/Bcl-2, as well as the RIP1-driven RIP1/RIP3/MLKL pathway. Immunofluorescence assay is used to examine the status of glial cells. RESULTS CE abrogated Aβ toxicity and inhibited apoptosis in cultured neurons, mainly by regulating the BDNF, FGF2, and TrkB/Akt signaling pathways as well as RIP1-driven inflammation and necroptosis. Similarly, mice injected intracerebrally with Aβ exhibited cognitive deficits and had elevated oxidative stress and inflammatory factors detected in their serum and brain. However, CE-treated mice showed recovery of cognitive abilities and quelled levels of oxidative stress and inflammatory factors. Moreover, Aβ toxicity led to a reduction in BDNF, FGF2, and related signaling regulators in the hippocampus and prefrontal cortex, accompanied by activation of RIP1-driven inflammatory signaling pathways, and a reduction in TBK1 and Bcl-2. However, CE restored the levels of BDNF, FGF2, and TrkB/Akt signaling pathway, while inhibiting RIP1-induced RIP1/RIP3/MLKL pathway, thereby antagonizing apoptosis and maintaining neuronal activity. CONCLUSIONS CE effectively eliminated the toxicity of Aβ in cultured neurons and mouse models, which holds promise for drug development.
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Affiliation(s)
- Xi-Xi Li
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China.
| | - Xiu-Yuan Lang
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China.
| | - Teng-Teng Ren
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China.
| | - Jun Wang
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China.
| | - Rongfeng Lan
- Department of Cell Biology & Medical Genetics, School of Basic Medical Sciences, Shenzhen University Health Science Center, Shenzhen, 518060, China.
| | - Xiao-Yan Qin
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China.
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1,2,4-Trimethoxybenzene selectively inhibits NLRP3 inflammasome activation and attenuates experimental autoimmune encephalomyelitis. Acta Pharmacol Sin 2021; 42:1769-1779. [PMID: 33627802 PMCID: PMC8564550 DOI: 10.1038/s41401-021-00613-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 01/10/2021] [Indexed: 01/31/2023] Open
Abstract
NOD-like receptor (NLR) family pyrin domain-containing-3 (NLRP3) inflammasome is implicated in inflammation-associated diseases such as multiple sclerosis, Parkinson's disease, and stroke. Targeting the NLRP3 inflammasome is beneficial to these diseases, but few NLRP3 inflammasome-selective inhibitors are identified to date. Essential oils (EOs) are liquid mixtures of volatile and low molecular-weight organic compounds extracted from aromatic plants, which show various pharmacological activities, including antibacterial, antifungal, antiviral, antioxidant, and anti-inflammatory properties. In this study we screened active ingredients from essential oils, and identified 1,2,4-trimethoxybenzene (1,2,4-TTB) as a selective NLRP3 inflammasome inhibitor. We showed that 1,2,4-TTB (1 mM) markedly suppressed nigericin- or ATP-induced NLRP3 inflammasome activation, thus decreased caspase-1 activation and IL-1β secretion in immortalized murine bone marrow-derived macrophages (iBMDMs) and in primary mouse microglia. Moreover, 1,2,4-TTB specifically inhibited the activation of NLRP3 inflammasome without affecting absent in melanoma 2 (AIM2) inflammasome activation. We further demonstrated that 1,2,4-TTB inhibited oligomerization of the apoptosis-associated speck-like protein containing a CARD (ASC) and protein-protein interaction between NLRP3 and ASC, thus blocking NLRP3 inflammasome assembly in iBMDMs and in primary mouse macrophages. In mice with experimental autoimmune encephalomyelitis (EAE), administration of 1,2,4-TTB (200 mg · kg-1 · d-1, i.g. for 17 days) significantly ameliorated EAE progression and demyelination. In conclusion, our results demonstrate that 1,2,4-TTB is an NLRP3 inflammasome inhibitor and attenuates the clinical symptom and inflammation of EAE, suggesting that 1,2,4-TTB is a potential candidate compound for treating NLRP3 inflammasome-driven diseases, such as multiple sclerosis.
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Coeloglossum viride var. bracteatum extract improves cognitive deficits by restoring BDNF, FGF2 levels and suppressing RIP1/RIP3/MLKL-mediated neuroinflammation in a 5xFAD mouse model of Alzheimer’s disease. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104612] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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Coeloglossum viride var. bracteatum extract attenuates staurosporine induced neurotoxicity by restoring the FGF2-PI3K/Akt signaling axis and Dnmt3. Heliyon 2021; 7:e07503. [PMID: 34401557 PMCID: PMC8353313 DOI: 10.1016/j.heliyon.2021.e07503] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 05/03/2021] [Accepted: 07/03/2021] [Indexed: 01/04/2023] Open
Abstract
We previously demonstrated the antioxidant activity of Coeloglossum viride var. bracteatum extract (CE) in rat cortical neurons and in mice with chemically induced cognitive impairment. In this work, we established a staurosporine (STS)-induced toxicity model to decipher the neuroprotective mechanisms of CE. We found that CE protected cell viability and neurite integrity in STS-induced toxicity by restoring the levels of FGF2 and its associated PI3K/Akt signaling axis. LY294002, a pan-inhibitor of PI3K, antagonized the activity of CE, although its-mediated restoration of FGF2 was unaffected. In addition, CE restored levels of Bcl-2/Caspase-3, PKCα/CaM pathway, and Dnmt3a and Dnmt3b, two methyltransferases that contribute to de novo DNA methylation. The Dnmts inhibitor 5-azacytidine impaired CE-mediated restoration of Dnmt3 or CaM, as well as the transition of DNA methylation status on the Dnmt3 promoter. These results reveal potential mechanisms that could facilitate the study and application of CE as a neuroprotective agent.
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Wu HT, Yu Y, Li XX, Lang XY, Gu RZ, Fan SR, Fang X, Bai JP, Lan R, Qin XY. Edaravone attenuates H 2O 2 or glutamate-induced toxicity in hippocampal neurons and improves AlCl 3/D-galactose induced cognitive impairment in mice. Neurotoxicology 2021; 85:68-78. [PMID: 34004234 DOI: 10.1016/j.neuro.2021.05.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/30/2021] [Accepted: 05/12/2021] [Indexed: 12/17/2022]
Abstract
Edaravone (Eda) is a free radical scavenger used in clinical trials for the treatment of ischemic stroke and amyotrophic lateral sclerosis. However, how Eda exerts its neuroprotective effects remains to be elucidated. We investigated the neuroprotective effects of Eda in cultured hippocampal neurons and in a mouse model of AlCl3/D-galactose-induced cognitive impairment. Eda protected hippocampal neurons by eliminating H2O2 or glutamate-induced toxicity, leading to decreased cell viability and neurite shortening. Consistently, Eda restored impaired levels of BDNF, FGF2 and their associated signaling axes (including TrkB, p-Akt and Bcl-2) to attenuate neuronal death. In a mouse model of chemically-induced cognitive impairment, Eda restored the levels of BDNF, FGF2 and TrkB/Akt signaling axis to attenuate neuronal apoptosis, thereby ameliorating cognitive impairment. Meanwhile, the pro-inflammation was eliminated due to the restoration of pro-inflammatory factors such as TNF-α, IL-6, IL-1β, and NOS2. In summary, Eda is an effective drug for protecting neurons from neurotoxic injury. BDNF, FGF2, and their regulated pathways may be potential therapeutic targets for neuroprotection.
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Affiliation(s)
- Huan-Tong Wu
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center for Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
| | - Yun Yu
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center for Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
| | - Xi-Xi Li
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center for Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
| | - Xiu-Yuan Lang
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center for Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
| | - Run-Ze Gu
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center for Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
| | - Sheng-Rui Fan
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center for Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
| | - Xin Fang
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center for Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
| | - Jin-Peng Bai
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center for Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
| | - Rongfeng Lan
- Department of Cell Biology & Medical Genetics, School of Basic Medical Sciences, Shenzhen University Health Science Center, Shenzhen, 518060, China.
| | - Xiao-Yan Qin
- Key Laboratory of Ecology and Environment in Minority Areas National Ethnic Affairs Commission, Center for Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China.
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Lobine D, Sadeer N, Jugreet S, Suroowan S, Keenoo BS, Imran M, Venugopala KN, Ibrahim FM, Zengin G, Mahomoodally MF. Potential of Medicinal Plants as Neuroprotective and Therapeutic Properties Against Amyloid-β-Related Toxicity, and Glutamate-Induced Excitotoxicity in Human Neural Cells. Curr Neuropharmacol 2021; 19:1416-1441. [PMID: 33845746 PMCID: PMC8762182 DOI: 10.2174/1570159x19666210412095251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/10/2021] [Accepted: 04/03/2021] [Indexed: 11/30/2022] Open
Abstract
Alzheimer's disease (AD) and Parkinson's disease (PD) are notorious neurodegenerative diseases amongst the general population. Being age-associated diseases, the prevalence of AD and PD is forecasted to rapidly escalate with the progressive aging population of the world. These diseases are complex and multifactorial. Among different events, amyloid β peptide (Aβ) induced toxicity is a well-established pathway of neuronal cell death, which plays a vital function in AD. Glutamate, the major excitatory transmitter, acts as a neurotoxin when present in excess at the synapses; this latter mechanism is termed excitotoxicity. It is hypothesised that glutamate-induced excitotoxicity contributes to the pathogenesis of AD and PD. No cure for AD and PD is currently available and the currently approved drugs available to treat these diseases have limited effectiveness and pose adverse effects. Indeed, plants have been a major source for the discovery of novel pharmacologically active compounds for distinct pathological conditions. Diverse plant species employed for brain-related disorders in traditional medicine are being explored to determine the scientific rationale behind their uses. Herein, we present a comprehensive review of plants and their constituents that have shown promise in reversing the (i) amyloid-β -related toxicity in AD models and (ii) glutamate-induced excitotoxicity in AD and PD models. This review summarizes information regarding the phytochemistry, biological and cellular activities, and clinical trials of several plant species in view to provide adequate scientific baseline information that could be used in the drug development process, thereby providing effective leads for AD and PD.
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Affiliation(s)
- Devina Lobine
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Reduit, Mauritius
| | - Nabeelah Sadeer
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Reduit, Mauritius
| | - Sharmeen Jugreet
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Reduit, Mauritius
| | - Shanoo Suroowan
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Reduit, Mauritius
| | - Bibi Sumera Keenoo
- Department of Medicine, Faculty of Medicine and Health Sciences, University of Mauritius, Reduit, Mauritius
| | - Muhammad Imran
- Faculty of Allied Health Sciences, University Institute of Diet and Nutritional Sciences, The University of Lahore, Pakistan
| | - Katharigatta N Venugopala
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Faten Mohamed Ibrahim
- Medicinal and Aromatic Plants Research Dept., National Research Center, 33 El Bohouth St., Dokki, Giza, P.O.12622, Egypt
| | - Gokhan Zengin
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, Konya, Turkey
| | - Mohamad Fawzi Mahomoodally
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Reduit, Mauritius
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13
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Guo Z, Wu HT, Li XX, Yu Y, Gu RZ, Lan R, Qin XY. Edaravone protects rat astrocytes from oxidative or neurotoxic inflammatory insults by restoring Akt/Bcl-2/Caspase-3 signaling axis. IBRO Rep 2020; 8:122-128. [PMID: 32382683 PMCID: PMC7200465 DOI: 10.1016/j.ibror.2020.04.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 04/17/2020] [Indexed: 12/11/2022] Open
Abstract
Astrocytes are the major glia cells in the central nervous system (CNS). Increasing evidence indicates that more than to be safe-guard and supporting cells for neurons, astrocytes play a broad spectrum of neuroprotective and pathological functions. Thus, they are compelling models to decipher mechanistic insights of glia cells to CNS insults and for the development of drugs. Edaravone is a free radical scavenger with the capacity to eliminate hydroxyl radicals and lipid peroxides. In this study, we examined the neuroprotective effects of edaravone in rat astrocytes challenged by hydrogen peroxide (H2O2) or bacterial lipopolysaccharides (LPS), respectively. We discovered that edaravone attenuated H2O2-induced oxidative stress by reactivating the Akt signaling axis and antagonistically restoring the expression of apoptosis associated regulators such as Bcl-2 and Caspase-3. Consistently, inhibition of Akt signaling by LY294002 attenuated the anti-oxidative activity of edaravone. In addition, edaravone mitigated LPS-induced morphological changes in astrocytes and alleviated the inflammatory activation and expression of TNF-α, IL-1β, IL-6 and NOS2. In summary, our data suggested that edavarone effectively protects astrocytes from oxidative stress or infectious insults, which may pave a new avenue for its application in preclinical research and human disease therapeutics.
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Key Words
- ALS, amyotrophic lateral sclerosis
- C1q, complement component 1q
- CNS, central nervous system
- GFAP
- GFAP, glial fibrillary acidic protein
- H2O2, hydrogen peroxide
- IL-1α, interleukin 1 alpha
- IL-1β, interleukin 1beta
- IL-6, interleukin 6
- LPS, lipopolysaccharides
- NOS2, nitric oxide synthase 2
- TLRs, Toll-like receptors
- TNF-α
- TNF-α, tumor necrosis factor alpha
- edaravone
- free radical scavenger
- oxidative stress
- pro-inflammatory factors
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Affiliation(s)
- Zhe Guo
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.,The Emergency Department, the Third Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Huan-Tong Wu
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Xi-Xi Li
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Yun Yu
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Run-Ze Gu
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Rongfeng Lan
- Department of Cell Biology & Medical Genetics, School of Basic Medical Sciences, Shenzhen University Health Science Center, Shenzhen 518060, China
| | - Xiao-Yan Qin
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
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14
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Mohd Sairazi NS, Sirajudeen KNS. Natural Products and Their Bioactive Compounds: Neuroprotective Potentials against Neurodegenerative Diseases. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2020; 2020:6565396. [PMID: 32148547 PMCID: PMC7042511 DOI: 10.1155/2020/6565396] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 12/09/2019] [Accepted: 01/06/2020] [Indexed: 02/06/2023]
Abstract
In recent years, natural products, which originate from plants, animals, and fungi, together with their bioactive compounds have been intensively explored and studied for their therapeutic potentials for various diseases such as cardiovascular, diabetes, hypertension, reproductive, cancer, and neurodegenerative diseases. Neurodegenerative diseases, including Alzheimer's disease, Huntington's disease, Parkinson's disease, and amyotrophic lateral sclerosis are characterized by the progressive dysfunction and loss of neuronal structure and function that resulted in the neuronal cell death. Since the multifactorial pathological mechanisms are associated with neurodegeneration, targeting multiple mechanisms of actions and neuroprotection approach, which involves preventing cell death and restoring the function to damaged neurons, could be promising strategies for the prevention and therapeutic of neurodegenerative diseases. Natural products have emerged as potential neuroprotective agents for the treatment of neurodegenerative diseases. This review focused on the therapeutic potential of natural products and their bioactive compounds to exert a neuroprotective effect on the pathologies of neurodegenerative diseases.
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Affiliation(s)
- Nur Shafika Mohd Sairazi
- Faculty of Medicine, Universiti Sultan Zainal Abidin (UniSZA), Medical Campus, Jalan Sultan Mahmud, 20400 Kuala Terengganu, Terengganu, Malaysia
| | - K. N. S. Sirajudeen
- Department of Chemical Pathology, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
- Department of Basic Medical Sciences, Kulliyyah of Medicine, International Islamic University Malaysia, Bandar Indera Mahkota, 25200 Kuantan, Pahang, Malaysia
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15
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Zhong SJ, Wang L, Gu RZ, Zhang WH, Lan R, Qin XY. Ginsenoside Rg1 ameliorates the cognitive deficits in D-galactose and AlCl 3-induced aging mice by restoring FGF2-Akt and BDNF-TrkB signaling axis to inhibit apoptosis. Int J Med Sci 2020; 17:1048-1055. [PMID: 32410834 PMCID: PMC7211162 DOI: 10.7150/ijms.43979] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 04/03/2020] [Indexed: 12/12/2022] Open
Abstract
Ginsenoside Rg1 is the main active ingredient of Panax ginseng with the activity of neuroprotective, antioxidant and strengthening the immune system. Therefore, we hypothesized that Rg1 may afford anti-aging effects although the mechanism remains to be elucidated. In this study, chemically induced aging mice were established by consecutive administration of D-galactose and AlCl3. We found that Rg1 effectively ameliorates spatial learning and memory deficits in aging mice demonstrated by their improved performance in step down avoidance tests and Morris water maze experiments. Rg1 restored aging-induced decline of FGF2 and BDNF, reactivated TrkB/Akt signaling pathways in the hippocampus and prefrontal cortex to inhibit apoptosis, for the expression of anti-apoptotic protein Bcl-2 and apoptosis promoting enzyme cleaved-Caspase3 were antagonistically restored. Therefore, these results established the anti-aging effects of Rg1, and FGF2, BDNF and associated signaling pathways might be promising targets. Our data may provide a new avenue to the pharmacological research and diet therapeutic role of ethnic products such as Rg1 in anti-aging and aging associated diseases.
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Affiliation(s)
- Si-Jia Zhong
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.,College of Economics and management, North China Electric Power University, Beijing 102206, China
| | - Lin Wang
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Run-Ze Gu
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Wen-Hao Zhang
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Rongfeng Lan
- Department of Cell Biology & Medical Genetics, School of Basic Medical Sciences, Shenzhen University Health Science Center, Shenzhen 518060, China
| | - Xiao-Yan Qin
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
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16
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Coeloglossum viride var. bracteatum extract improves learning and memory of chemically-induced aging mice through upregulating neurotrophins BDNF and FGF2 and sequestering neuroinflammation. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.03.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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17
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Pan RY, Ma J, Kong XX, Wang XF, Li SS, Qi XL, Yan YH, Cheng J, Liu Q, Jin W, Tan CH, Yuan Z. Sodium rutin ameliorates Alzheimer's disease-like pathology by enhancing microglial amyloid-β clearance. SCIENCE ADVANCES 2019; 5:eaau6328. [PMID: 30820451 PMCID: PMC6393001 DOI: 10.1126/sciadv.aau6328] [Citation(s) in RCA: 166] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 01/14/2019] [Indexed: 05/09/2023]
Abstract
The accumulation of aggregated amyloid-β (Aβ) in the brain is the first critical step in the pathogenesis of Alzheimer's disease (AD), which also includes synaptic impairment, neuroinflammation, neuronal loss, and eventual cognitive defects. Emerging evidence suggests that impairment of Aβ phagocytosis and clearance is a common phenotype in late-onset AD. Rutin (quercetin-3-rutinoside) has long been investigated as a natural flavonoid with different biological functions in some pathological circumstances. Sodium rutin (NaR), could promote Aβ clearance by increasing microglial by increasing the expression levels of phagocytosis-related receptors in microglia. Moreover, NaR promotes a metabolic switch from anaerobic glycolysis to mitochondrial OXPHOS (oxidative phosphorylation), which could provide microglia with sufficient energy (ATP) for Aβ clearance. Thus, NaR administration could attenuate neuroinflammation and enhance mitochondrial OXPHOS and microglia-mediated Aβ clearance, ameliorating synaptic plasticity impairment and eventually reversing spatial learning and memory deficits. Our findings suggest that NaR is a potential therapeutic agent for AD.
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Affiliation(s)
- Rui-Yuan Pan
- The State Key Laboratory of Brain and Cognitive Sciences, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
- The College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- The Brain Science Center, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Jun Ma
- The Brain Science Center, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Xiang-Xi Kong
- The Brain Science Center, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Xiao-Feng Wang
- Department of Natural Medicinal Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Shuo-Shuo Li
- The State Key Laboratory of Brain and Cognitive Sciences, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
- The College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- The Brain Science Center, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Xiao-Long Qi
- The State Key Laboratory of Brain and Cognitive Sciences, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
- The College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- The Brain Science Center, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Yu-Han Yan
- Department of Physiology, Dalian Medical University, Dalian 116044, China
| | - Jinbo Cheng
- The Brain Science Center, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Qingsong Liu
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui, 230031, China
| | - Wanzhu Jin
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Chang-Heng Tan
- Department of Natural Medicinal Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Zengqiang Yuan
- The Brain Science Center, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
- Center of Alzheimer’s Disease, Beijing Institute for Brain Disorders, Beijing 100069, China
- Corresponding author. ,
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18
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Zhang ZX, Feng K, Sui XJ, Wang WS, Wang L, Wang DH, Luo XM, Chen XF. New triterpenoids from Staphylea bumalda flower buds and their neuroprotective activity against H 2O 2-induced injury in vitro. Arch Pharm Res 2018; 41:1162-1169. [PMID: 30378038 DOI: 10.1007/s12272-018-1086-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 10/25/2018] [Indexed: 11/25/2022]
Abstract
Four new acylated triterpene glycosides with aliphatic chains (4-7) as well as five known triterpenoids were isolated from the flower buds of Staphylea bumalda with bioassay guidance. Their structures were determined on the basis of spectral techniques, including IR, 1D and 2D NMR, and HR-APCI-MS. Most compounds (except 8) were isolated from S. bumalda for the first time. Additionally, the neuroprotective effects of 1 and 4-9 on suckling rat primary cultured hippocampal neurons against H2O2-induced injury were evaluated in vitro. The four new triterpenoids (4-7) showed neuroprotective effects, which increased the cell viability to over 74% at different concentrations, which was higher than the negative control (59%), while compounds 1 and 8-9 exhibited cytotoxic activity.
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Affiliation(s)
- Zheng-Xi Zhang
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, People's Republic of China
| | - Kun Feng
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, People's Republic of China
| | - Xian-Jin Sui
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, People's Republic of China
| | - Wen-Shu Wang
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, People's Republic of China. .,Experimental Centre of Chemistry, Minzu University of China, Beijing, 100081, People's Republic of China. .,Beijing Engineering Research Centre of Food, Environment and Public Health, Beijing, 100081, People's Republic of China.
| | - Lin Wang
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, People's Republic of China
| | - Dong-Hong Wang
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, People's Republic of China
| | - Xiao-Min Luo
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, People's Republic of China
| | - Xiao-Fei Chen
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, People's Republic of China
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19
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2,3,5,4'-Tetrahydroxystilbene-2-O-beta-D-glucoside Reverses Stress-Induced Depression via Inflammatory and Oxidative Stress Pathways. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:9501427. [PMID: 30327715 PMCID: PMC6169245 DOI: 10.1155/2018/9501427] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 08/01/2018] [Indexed: 01/21/2023]
Abstract
Major depressive disorder (MDD) is a chronic mental disease that adversely affects human mood and cognition. Many first-line antidepressant drugs have high rates of partial responsiveness or nonresponsiveness with side effects, and finding more effective drugs for the treatment of depression is therefore urgently needed. THSG, a main active compound of the traditional Chinese herb Polygonum multiflorum, reportedly acts as a neuroprotective agent. This study aimed to illustrate whether THSG prevents depressive-like behaviors induced by chronic restraint stress (CRS) in an MDD mouse model. Our results demonstrated that the peripheral administration of different THSG doses (10 mg/kg, 20 mg/kg, and 40 mg/kg) reversed the depressive-like behaviors in CRS mice as measured by the tail suspension test, forced swimming test, and open-field test. Further analyses suggested that THSG treatment reduced oxidative stress in both the central and peripheral nervous systems of CRS mice. In addition, heightened inflammatory responses, demonstrated by the increased expression of proinflammatory factors (TNF-α, IL-1β, and IL-6), in hippocampal and prefrontal cortex tissues of CRS mice were inhibited by THSG administration. THSG also restored the diminished Akt signaling pathway in the brains of CRS mice. Moreover, our data suggest increased astrocyte proliferation and neurogenesis in the hippocampus of CRS mice after THSG treatment. Taken together, our results demonstrated an antidepressant effect of THSG in a mouse model of MDD for the first time, and oxidative stress and inflammatory pathways were determined to play roles in this effect.
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