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Xiao L, Wen H, Peng S, Chen B, Tang B, Liu B. Polygonatum polysaccharide ameliorates D-galactose-induced cognitive dysfunction in aging rats by inhibiting ferroptosis through activation of Nrf2. Neurosci Lett 2024; 836:137873. [PMID: 38871020 DOI: 10.1016/j.neulet.2024.137873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 06/06/2024] [Accepted: 06/07/2024] [Indexed: 06/15/2024]
Abstract
CONTEXT Aging is a major risk factor for various neurodegenerative diseases, and ferroptosis has been identified as an important mode of cell death during accelerated aging. As the main component of the edible plant YuZhu in China, Polygonatum polysaccharide (POP) is an important natural compound with anti-aging properties. OBJECTIVE To evaluate the anti-aging effects of POP and the underlying molecular mechanisms involved and to evaluate the overall anti-aging effects of POP on cognitive impairment due to accelerated aging. MATERIALS AND METHODS A D-galactose (D-gal)-induced accelerated aging rat model was established to evaluate the anti-aging effects of POP and the underlying molecular mechanisms involved. In turn, Morris water maze and open field experiments were used to evaluate the anti-aging effects of POP on cognitive impairment due to accelerated aging. RESULTS The mechanism by which POP affects nuclear factor E2-related factor 2 (Nrf2), an essential transcription factor, was confirmed. POP significantly improved d-gal-induced cognitive dysfunction in treated model rats, which exhibited reduced pathological changes in the hippocampus, reduced latency of the water maze platform, and increased exploration time in the central area in the open field experiment compared to those of untreated model rats. Furthermore, POP intervention downregulated ferroptosis-related proteins and upregulated Nrf2 expression, and selective inhibition of Nrf2 eliminated the ability of POP to reduce ferroptosis. CONCLUSIONS POP is a natural ingredient with therapeutic potential due to its ability to alleviate aging by activating Nrf2, inhibiting ferroptosis, and alleviating cognitive dysfunction.
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Affiliation(s)
- Lan Xiao
- School of Pharmacy, Hunan University of Traditional Chinese Medicine, ChangSha, China
| | - Huiqiao Wen
- XiangXing College, Hunan University of Traditional Chinese Medicine, ChangSha, China
| | - Sha Peng
- School of Pharmacy, Hunan University of Traditional Chinese Medicine, ChangSha, China
| | - Bowei Chen
- Hunan Academy of Chinese Medicine, Changsha, China
| | - Biao Tang
- School of Medicine, Hunan University of Traditional Chinese Medicine, ChangSha, China
| | - Baiyan Liu
- Hunan Academy of Chinese Medicine, Changsha, China
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Wang C, Xiong ZM, Cong YQ, Li ZY, Xie Y, Wang YX, Zhou HM, Yang YF, Liu JJ, Wu HZ. Revealing the pharmacological mechanisms of nao-an dropping pill in preventing and treating ischemic stroke via the PI3K/Akt/eNOS and Nrf2/HO-1 pathways. Sci Rep 2024; 14:11240. [PMID: 38755191 PMCID: PMC11099061 DOI: 10.1038/s41598-024-61770-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 05/09/2024] [Indexed: 05/18/2024] Open
Abstract
Nao-an Dropping Pill (NADP) is a Chinese patent medicine which commonly used in clinic for ischemic stroke (IS). However, the material basis and mechanism of its prevention or treatment of IS are unclear, then we carried out this study. 52 incoming blood components were resolved by UHPLC-MS/MS from rat serum, including 45 prototype components. The potential active prototype components hydroxysafflor yellow A, ginsenoside F1, quercetin, ferulic acid and caffeic acid screened by network pharmacology showed strongly binding ability with PIK3CA, AKT1, NOS3, NFE2L2 and HMOX1 by molecular docking. In vitro oxygen-glucose deprivation/reperfusion (OGD/R) experimental results showed that NADP protected HA1800 cells from OGD/R-induced apoptosis by affecting the release of LDH, production of NO, and content of SOD and MDA. Meanwhile, NADP could improve behavioral of middle cerebral artery occlusion/reperfusion (MCAO/R) rats, reduce ischemic area of cerebral cortex, decrease brain water and glutamate (Glu) content, and improve oxidative stress response. Immunohistochemical results showed that NADP significantly regulated the expression of PI3K, Akt, p-Akt, eNOS, p-eNOS, Nrf2 and HO-1 in cerebral ischemic tissues. The results suggested that NADP protects brain tissues and ameliorates oxidative stress damage to brain tissues from IS by regulating PI3K/Akt/eNOS and Nrf2/HO-1 signaling pathways.
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Affiliation(s)
- Chen Wang
- College of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Zhe-Ming Xiong
- College of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - You-Quan Cong
- Leiyunshang Pharmaceutical Group Co., Ltd, Suzhou, 215009, China
| | - Zi-Yao Li
- College of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Yi Xie
- College of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Ying-Xiao Wang
- College of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Hui-Min Zhou
- College of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Yan-Fang Yang
- College of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China.
- Key Laboratory of Traditional Chinese Medicine Resources and Chemistry of Hubei Province, Wuhan, 430065, China.
- Modern Engineering Research Center of Traditional Chinese Medicine and Ethnic Medicine of Hubei Province, Wuhan, 430065, China.
| | - Jing-Jing Liu
- Leiyunshang Pharmaceutical Group Co., Ltd, Suzhou, 215009, China.
| | - He-Zhen Wu
- College of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China.
- Key Laboratory of Traditional Chinese Medicine Resources and Chemistry of Hubei Province, Wuhan, 430065, China.
- Modern Engineering Research Center of Traditional Chinese Medicine and Ethnic Medicine of Hubei Province, Wuhan, 430065, China.
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Ma XX, Xie HY, Hou PP, Wang XJ, Zhou W, Wang ZH. Nuclear Factor Erythroid 2-Related Factor 2 is Essential for Low-Normobaric Oxygen Treatment-Mediated Blood-Brain Barrier Protection Following Ischemic Stroke. Mol Neurobiol 2024; 61:2938-2948. [PMID: 37950788 DOI: 10.1007/s12035-023-03767-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 11/01/2023] [Indexed: 11/13/2023]
Abstract
Cerebral ischemia/reperfusion (I/R) injury increases blood-brain barrier (BBB) permeability, leading to hemorrhagic transformation and brain edema. Normobaric oxygen (NBO) is a routine clinical treatment strategy for this condition. However, its neuroprotective effects remain controversial. This study investigated the effect of different NBO concentrations on I/R injury and explores the involvement of the nuclear factor erythroid 2-related factor 2 (Nrf2) pathway in the underlying mechanism. A mouse middle cerebral artery occlusion (MCAO) model, and an oxygen and glucose deprivation (OGD) model featuring mouse brain microvascular endothelial cells (ECs) called bEnd.3, were used to investigate the effect of NBO on I/R injury. A reactive oxygen species (ROS) inducer and Nrf2-knockdown by RNA were used to explore whether the Nrf2 pathway mediates the effect of NBO on cerebrovascular ECs. In the early stage of MCAO, 40% O2 NBO exposure significantly improved blood perfusion in the ischemic area and effectively relieved BBB permeability, cerebral edema, cerebral injury, and neurological function after MCAO. In the OGD model, 40% O2 NBO exposure significantly reduced apoptosis, inhibited ROS generation, reduced ER stress, upregulated the expression of tight junction proteins, and stabilized the permeability of ECs. Blocking the Nrf2 pathway nullified the protective effect of 40% O2 NBO on ECs after OGD. Finally, our study confirmed that low concentrations of NBO have a neuroprotective effect on I/R by activating the Nrf2 pathway in ECs.
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Affiliation(s)
- Xiao-Xiao Ma
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hai-Yi Xie
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Pin-Pin Hou
- Central Laboratory, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiao-Jing Wang
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wei Zhou
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Zhen-Hong Wang
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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He MT, Park G, Park DH, Choi M, Ku S, Go SH, Lee YG, Song SJ, Ahn CW, Jang YP, Kang KS. So Shiho Tang Reduces Inflammation in Lipopolysaccharide-Induced RAW 264.7 Macrophages and Dextran Sodium Sulfate-Induced Colitis Mice. Biomolecules 2024; 14:451. [PMID: 38672468 PMCID: PMC11047977 DOI: 10.3390/biom14040451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 04/02/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024] Open
Abstract
So Shiho Tang (SSHT) is a traditional herbal medicine commonly used in Asian countries. This study evaluated the anti-inflammatory effect of SSHT and the associated mechanism using lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages and murine dextran sodium sulfate (DSS)-induced ulcerative colitis models. Pre-treatment of RAW 264.7 macrophages with SSHT significantly reduced LPS-induced inflammation by decreasing nitrite production and regulating the mitogen-activated protein kinase pathway. Meanwhile, in mice, DSS-induced colitis symptoms, including colon shortening and body weight loss, were attenuated by SSHT. Moreover, representative compounds of SSHT, including glycyrrhizic acid, ginsenoside Rb1, baicalin, saikosaponin A, and saikosaponin B2, were quantified, and their effects on nitrite production were measured. A potential anti-inflammatory effect was detected in LPS-induced RAW 264.7 cells. Our findings suggest that SSHT is a promising anti-inflammatory agent. Its representative components, including saikosaponin B2, ginsenoside Rb1, and baicalin, may represent the key active compounds responsible for eliciting the anti-inflammatory effects and can, therefore, serve as quality control markers in SSHT preparations.
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Affiliation(s)
- Mei Tong He
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea; (M.T.H.); (D.H.P.)
| | - Geonha Park
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea;
| | - Do Hwi Park
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea; (M.T.H.); (D.H.P.)
| | - Minsik Choi
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (M.C.); (S.K.); (S.H.G.); (Y.G.L.); (S.J.S.)
| | - Sejin Ku
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (M.C.); (S.K.); (S.H.G.); (Y.G.L.); (S.J.S.)
| | - Seung Hyeon Go
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (M.C.); (S.K.); (S.H.G.); (Y.G.L.); (S.J.S.)
| | - Yun Gyo Lee
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (M.C.); (S.K.); (S.H.G.); (Y.G.L.); (S.J.S.)
| | - Seok Jun Song
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (M.C.); (S.K.); (S.H.G.); (Y.G.L.); (S.J.S.)
| | - Chang-Wook Ahn
- Dr. Ahn’s Surgery Clinic, Osan 18144, Republic of Korea;
| | - Young Pyo Jang
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea;
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (M.C.); (S.K.); (S.H.G.); (Y.G.L.); (S.J.S.)
- Department of Integrated Drug Development and Natural Products, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea; (M.T.H.); (D.H.P.)
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Li P, Chen JM, Ge SH, Sun ML, Lu JD, Liu F, Wang LL, Zhang X, Wang XP. Pentoxifylline protects against cerebral ischaemia-reperfusion injury through ferroptosis regulation via the Nrf2/SLC7A11/GPX4 signalling pathway. Eur J Pharmacol 2024; 967:176402. [PMID: 38331339 DOI: 10.1016/j.ejphar.2024.176402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/23/2024] [Accepted: 02/06/2024] [Indexed: 02/10/2024]
Abstract
OBJECTIVE To investigate whether pentoxifylline (PTX) attenuates cerebral ischaemia-reperfusion injury (IRI) in rats by inhibiting ferroptosis and to explore the underlying molecular mechanisms. METHODS Cerebral IRI was induced in male Sprague-Dawley (SD) rats using middle cerebral artery occlusion (MCAO). The effects of PTX on cerebral ischaemia-reperfusion brain samples were detected through neurological deficit score, staining and electron microscopy; levels of ferroptosis biomarkers from brain samples were detected using kits. Additionally, the expression levels of nuclear factor erythroid 2-related factor 2 (Nrf2), transferrin receptor protein 1, divalent metal transporter 1, solute carrier family 7 member 11 (SLC7A11) and glutathione peroxidase 4 (GPX4) were determined by immunohistochemistry, real-time quantitative polymerase chain reaction and western blotting. RESULTS Pre-treatment with PTX was found to improve neurological function, evidenced by reduced neurological deficit scores, decreased infarct volume and alleviated pathological features post-MCAO. This improvement was accompanied by reduced lipid peroxidation levels and mitigated mitochondrial damage. Notably, PTX's inhibitory effect on ferroptosis was characterised by enhanced Nrf2 nuclear translocation and regulation of ferroptosis-related proteins. Moreover, inhibition of Nrf2 using ML385 (an Nrf2-specific inhibitor) reversed PTX's neuroprotective effect on MCAO-induced ferroptosis via the SLC7A11/GPX4 signalling pathway. CONCLUSIONS Ferroptosis is evident following cerebral ischaemia-reperfusion in rats. Pentoxifylline confers protection against IRI in rats by inhibiting ferroptosis through the Nrf2/SLC7A11/GPX4 signalling pathway.
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Affiliation(s)
- Pei Li
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei, China; Department of Neurology, Tangshan Gongren Hospital, Tangshan, 063000, Hebei, China
| | - Jun-Min Chen
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei, China
| | - Shi-Hao Ge
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei, China
| | - Mei-Lin Sun
- Department of Neurology, Xingtai People's Hospital, Xingtai, 054001, Hebei, China
| | - Jun-Dong Lu
- Department of Neurology, Baoding First Central Hospital, Baoding, 071000, Hebei, China
| | - Fan Liu
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei, China
| | - Le-Le Wang
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei, China
| | - Xin Zhang
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei, China
| | - Xiao-Peng Wang
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei, China.
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Lin G, Xu Q, Li J, Chu Z, Ma X, Zhu Q, Zhao Y, Mo J, Ye W, Shao L, Fang T, He M, Yue S, Dai M. Design, Synthesis, and Biological Evaluation of Pierardine Derivatives as Novel Brain-Penetrant and In Vivo Potent NMDAR-GluN2B Antagonists for Ischemic Stroke Treatment. J Med Chem 2024; 67:3358-3384. [PMID: 38413367 DOI: 10.1021/acs.jmedchem.3c01524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
A series of structurally novel GluN2B NMDAR antagonists were designed, synthesized, and biologically evaluated as anti-stroke therapeutics by optimizing the chemical structure of Pierardine, the active ingredient of traditional Chinese medicine Dendrobium aphyllum (Roxb.) C. E. Fischer identified via in silico screening. The systematic structure-activity relationship study led to the discovery of 58 with promising NMDAR-GluN2B binding affinity and antagonistic activity. Of the two enantiomers, S-58 exhibited significant inhibition (IC50 = 74.01 ± 12.03 nM) against a GluN1/GluN2B receptor-mediated current in a patch clamp assay. In addition, it displayed favorable specificity over other subtypes and off-target receptors. In vivo, S-58 exerted therapeutic efficacy comparable to that of the approved GluN2B NMDAR antagonist ifenprodil and excellent safety profiles. In addition to the attractive in vitro and in vivo potency, S-58 exhibited excellent brain exposure. In light of these merits, S-58 has been advanced to further preclinical investigation as a potential anti-stroke candidate.
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Affiliation(s)
- Gaofeng Lin
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
- Hefei Institute of Pharmaceutical Industry Company, Ltd., Hefei 230088, China
| | - Qinlong Xu
- Hefei Institute of Pharmaceutical Industry Company, Ltd., Hefei 230088, China
| | - Jiaming Li
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
- Department of Medicinal Chemistry, Anhui Academy of Chinese Medicine, Hefei 230012, China
- Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Hefei 230012, China
| | - Zhaoxing Chu
- Hefei Institute of Pharmaceutical Industry Company, Ltd., Hefei 230088, China
| | - Xiaodong Ma
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
- Department of Medicinal Chemistry, Anhui Academy of Chinese Medicine, Hefei 230012, China
- Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Hefei 230012, China
| | - Qihua Zhu
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Yan Zhao
- Hefei Institute of Pharmaceutical Industry Company, Ltd., Hefei 230088, China
| | - Jiajia Mo
- Hefei Institute of Pharmaceutical Industry Company, Ltd., Hefei 230088, China
| | - Wenfeng Ye
- Hefei Institute of Pharmaceutical Industry Company, Ltd., Hefei 230088, China
| | - Li Shao
- Hefei Institute of Pharmaceutical Industry Company, Ltd., Hefei 230088, China
| | - Tao Fang
- Hefei Institute of Pharmaceutical Industry Company, Ltd., Hefei 230088, China
| | - Minghan He
- Rutgers Preparatory School, Somerset, New Jersey 08873, United States
| | - Shaoyun Yue
- Hefei Institute of Pharmaceutical Industry Company, Ltd., Hefei 230088, China
| | - Mingqi Dai
- Hefei Institute of Pharmaceutical Industry Company, Ltd., Hefei 230088, China
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Huang D, Awad ACA, Tang C, Chen Y. Demethylnobiletin ameliorates cerebral ischemia-reperfusion injury in rats through Nrf2/HO-1 signaling pathway. ENVIRONMENTAL TOXICOLOGY 2024; 39:1335-1349. [PMID: 37955318 DOI: 10.1002/tox.24036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/22/2023] [Accepted: 10/31/2023] [Indexed: 11/14/2023]
Abstract
BACKGROUND Demethylnobiletin (DN), with a variety of biological activities, is a polymethoxy-flavanone (PMF) found in citrus. In the present study, we explored the biological activities and potential mechanism of DN to improve cerebral ischemia reperfusion injury (CIRI) in rats, and identified DN as a novel neuroprotective agent for patients with ischemic brain injury. METHODS Rat CIRI models were established via middle cerebral artery occlusion (MCAO). Primary nerve cells were isolated and cultured in fetal rat cerebral cortex in vitro, and oxygen-glucose deprivation/reperfusion (OGD/R) models of primary nerve cells were induced. After intervention with DN with different concentrations in MCAO rats and OGD/R nerve cells, 2,3,5-triphenyltetrazolium chloride staining was used to quantify cerebral infarction size in CIRI rats. Modified neurological severity score was utilized to assess neurological performance. Histopathologic staining and live/dead cell-viability staining was used to observe apoptosis. Levels of glutathione (GSH), superoxide dismutase (SOD), reactive oxygen species (ROS) and malondialdehyde (MDA) in tissues and cells were detected using commercial kits. DN level in serum and cerebrospinal fluid of MCAO rats were measured by liquid chromatography tandem mass spectrometry. In addition, expression levels of proteins like Kelch like ECH associated protein 1 (Keap1), nuclear factor erythroid 2-related factor 2 (Nfr2) and heme oxygenase 1 (HO-1) in the Nrf2/HO-1 pathway, and apoptosis-related proteins like Cleaved caspase-3, BCL-2-associated X protein (Bax) and B-cell lymphoma-2 (Bcl-2) were determined by Western blot and immunofluorescence. RESULTS DN can significantly enhance neurological function recovery by reducing cerebral infarction size and weakening neurocytes apoptosis in MCAO rats. It was further found that DN could improve oxidative stress (OS) injury of nerve cells by bringing down MDA and ROS levels and increasing SOD and GSH levels. Notably, DN exerts its pharmacological influences through entering blood-brain barrier. Mechanically, DN can reduce Keap1 expression while activate Nrf2 and HO-1 expression in neurocytes. CONCLUSIONS The protective effect of DN on neurocytes have been demonstrated in both in vitro and in vivo circumstances. It deserves to be developed as a potential neuroprotective agent through regulating the Nrf2/HO-1 signaling pathway to ameliorate neurocytes impairment caused by OS.
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Affiliation(s)
- Dan Huang
- Department of Neurology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
- Faculty of Medicine/Clinical Campus/Lembah Sireh, Lincoln University college, Kota Bharu, Kelantan, Malaysia
| | - Ali Chyadmarzok Al Awad
- Faculty of Medicine/Clinical Campus/Lembah Sireh, Lincoln University college, Kota Bharu, Kelantan, Malaysia
| | - Chuai Tang
- Department of Rehabilitation Therapeutics, The Second Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Yunqiang Chen
- Department of Rehabilitation Therapeutics, The Second Affiliated Hospital of Hainan Medical University, Haikou, China
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8
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Fadoul G, Ikonomovic M, Zhang F, Yang T. The cell-specific roles of Nrf2 in acute and chronic phases of ischemic stroke. CNS Neurosci Ther 2024; 30:e14462. [PMID: 37715557 PMCID: PMC10916447 DOI: 10.1111/cns.14462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/24/2023] [Accepted: 08/28/2023] [Indexed: 09/17/2023] Open
Abstract
Ischemic stroke refers to the sudden loss of blood flow in a specific area of the brain. It is the fifth leading cause of mortality and the leading cause of permanent disability. The transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2) controls the production of several antioxidants and protective proteins and it has been investigated as a possible pharmaceutical target for reducing harmful oxidative events in brain ischemia. Each cell type exhibits different roles and behaviors in different phases post-stroke, which is comprehensive yet important to understand to optimize management strategies and goals for care for stroke patients. In this review, we comprehensively summarize the protective effects of Nrf2 in experimental ischemic stroke, emphasizing the role of Nrf2 in different cell types including neurons, astrocytes, oligodendrocytes, microglia, and endothelial cells during acute and chronic phases of stroke and providing insights on the neuroprotective role of Nrf2 on each cell type throughout the long term of stroke care. We also highlight the importance of targeting Nrf2 in clinical settings while considering a variety of important factors such as age, drug dosage, delivery route, and time of administration.
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Affiliation(s)
- George Fadoul
- Department of NeurologyUniversity of PittsburghPittsburghPennsylvaniaUSA
- Pittsburgh Institute of Brain Disorders and RecoveryUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Milos Ikonomovic
- Department of NeurologyUniversity of PittsburghPittsburghPennsylvaniaUSA
- Department of PsychiatryUniversity of PittsburghPittsburghPennsylvaniaUSA
- Geriatric Research Education and Clinical Center, VA Pittsburgh Healthcare SystemPittsburghPennsylvaniaUSA
| | - Feng Zhang
- Department of NeurologyUniversity of PittsburghPittsburghPennsylvaniaUSA
- Pittsburgh Institute of Brain Disorders and RecoveryUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Tuo Yang
- Department of NeurologyUniversity of PittsburghPittsburghPennsylvaniaUSA
- Pittsburgh Institute of Brain Disorders and RecoveryUniversity of PittsburghPittsburghPennsylvaniaUSA
- Department of Internal MedicineUniversity of Pittsburgh Medical CenterPittsburghPennsylvaniaUSA
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9
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Zhang C, Ma Y, Zhao Y, Guo N, Han C, Wu Q, Mu C, Zhang Y, Tan S, Zhang J, Liu X. Systematic review of melatonin in cerebral ischemia-reperfusion injury: critical role and therapeutic opportunities. Front Pharmacol 2024; 15:1356112. [PMID: 38375039 PMCID: PMC10875093 DOI: 10.3389/fphar.2024.1356112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 01/22/2024] [Indexed: 02/21/2024] Open
Abstract
Cerebral ischemia-reperfusion (I/R) injury is the predominant causes for the poor prognosis of ischemic stroke patients after reperfusion therapy. Currently, potent therapeutic interventions for cerebral I/R injury are still very limited. Melatonin, an endogenous hormone, was found to be valid in preventing I/R injury in a variety of organs. However, a systematic review covering all neuroprotective effects of melatonin in cerebral I/R injury has not been reported yet. Thus, we perform a comprehensive overview of the influence of melatonin on cerebral I/R injury by collecting all available literature exploring the latent effect of melatonin on cerebral I/R injury as well as ischemic stroke. In this systematic review, we outline the extensive scientific studies and summarize the beneficial functions of melatonin, including reducing infarct volume, decreasing brain edema, improving neurological functions and attenuating blood-brain barrier breakdown, as well as its key protective mechanisms on almost every aspect of cerebral I/R injury, including inhibiting oxidative stress, neuroinflammation, apoptosis, excessive autophagy, glutamate excitotoxicity and mitochondrial dysfunction. Subsequently, we also review the predictive and therapeutic implications of melatonin on ischemic stroke reported in clinical studies. We hope that our systematic review can provide the most comprehensive introduction of current advancements on melatonin in cerebral I/R injury and new insights into personalized diagnosis and treatment of ischemic stroke.
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Affiliation(s)
- Chenguang Zhang
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yumei Ma
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yating Zhao
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Na Guo
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Chen Han
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Qian Wu
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Changqing Mu
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yue Zhang
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Shutong Tan
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Jian Zhang
- Department of Cell Biology, Key Laboratory of Cell Biology, Ministry of Public Health, Shenyang, Liaoning, China
- Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, Liaoning, China
| | - Xu Liu
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
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Song LJ, Han QX, Ding ZB, Liu K, Zhang XX, Guo MF, Ma D, Wang Q, Xiao BG, Ma CG. Icariin ameliorates the cuprizone-induced demyelination associated with antioxidation and anti-inflammation. Inflammopharmacology 2024; 32:809-823. [PMID: 38177566 DOI: 10.1007/s10787-023-01388-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 08/23/2023] [Indexed: 01/06/2024]
Abstract
The treatment of immunomodulation in multiple sclerosis (MS) can alleviate the severity and relapses. However, it cannot improve the neurological disability of patients due to a lack of myelin protection and regeneration. Therefore, remyelinating therapies may be one of the feasible strategies that can prevent axonal degeneration and restore neurological disability. Natural product icariin (ICA) is a flavonol compound extracted from epimedium flavonoids, which has neuroprotective effects in several models of neurological diseases. Here, we attempt to explore whether ICA has the potential to treat demyelination and its possible mechanisms of action using lipopolysaccharide-treated BV2 microglia, primary microglia, bone marrow-derived macrophages, and cuprizone-induced demyelination model. The indicators of oxidative stress and inflammatory response were evaluated using commercial kits. The results showed that ICA significantly reduced the levels of oxidative intermediates nitric oxide, hydrogen peroxide, malondialdehyde, and inflammatory cytokines TNF-α, IL-1β, and increased the levels of antioxidants superoxide dismutase, catalase, glutathione peroxidase, and anti-inflammatory cytokines IL-10 and TGF-β in vitro cell experiments. In vivo demyelination model, ICA significantly alleviated the behavioral abnormalities and enhanced the integrated optical density/mm2 of Black Gold II and myelin basic protein myelin staining, accompanied by the inhibition of oxidative stress/inflammatory response. Immunohistochemical staining showed that ICA significantly induced the expression of nuclear factor erythroid derived 2/heme oxygenase-1 (Nrf2/HO-1) and inhibited the expression of toll-like receptor 4/ nuclear factor kappa B (TLR4/NF-κB), which are two key signaling pathways in antioxidant and anti-inflammatory processes. Our results strongly suggest that ICA may be used as a potential agent to treat demyelination via regulating Nrf2/HO-1-mediated antioxidative stress and TLR4/NF-κB-mediated inflammatory responses.
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Affiliation(s)
- Li-Juan Song
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine, Shanxi University of Chinese Medicine, Taiyuan, China
- Department of Neurosurgery, Sinopharm Tongmei General Hospital, Datong, China
| | - Qing-Xian Han
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine, Shanxi University of Chinese Medicine, Taiyuan, China
| | - Zhi-Bin Ding
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine, Shanxi University of Chinese Medicine, Taiyuan, China
| | - Kexin Liu
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine, Shanxi University of Chinese Medicine, Taiyuan, China
| | - Xiao-Xu Zhang
- Department of Neurosurgery, Sinopharm Tongmei General Hospital, Datong, China
| | - Min-Fang Guo
- Institute of Brain Science, Shanxi Datong University, Datong, China
| | - Dong Ma
- Department of Neurosurgery, Sinopharm Tongmei General Hospital, Datong, China
| | - Qing Wang
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine, Shanxi University of Chinese Medicine, Taiyuan, China.
| | - Bao-Guo Xiao
- Institute of Neurology, Huashan Hospital, Institutes of Brain Science and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, China.
| | - Cun-Gen Ma
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine, Shanxi University of Chinese Medicine, Taiyuan, China.
- Institute of Brain Science, Shanxi Datong University, Datong, China.
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11
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Liu C, Wu B, Tao Y, Liu X, Lou X, Wang Z, Guo Z, Tang D. Identification and immunological characterization of cuproptosis-related molecular clusters in ischemic stroke. Neuroreport 2024; 35:17-26. [PMID: 37983626 PMCID: PMC10702694 DOI: 10.1097/wnr.0000000000001972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 10/21/2023] [Indexed: 11/22/2023]
Abstract
The present study elucidated cuproptosis-related molecular clusters involved in ischemic stroke and developed predictive models. Transcriptomic and immunological profiles of ischemic stroke-related datasets were extracted from the Gene Expression Omnibus database. Next, we conducted weighted gene co-expression network analysis to determine cluster-specific differentially expressed genes (DEGs). Models such as random forest and eXtreme gradient boosting (XGB) were evaluated to select the best prediction performance model. Subsequently, we validated the model's predictive efficiency by using nomograms, decision curve analysis, calibration curves, and receiver operating characteristic curve analysis with an external dataset. We identified two cuproptosis-related clusters involved in ischemic stroke. The DEGs in Cluster 2 were closely associated with amino acid metabolism, various immune responses, and cell proliferation pathways. The XGB model showed lower residuals, a smaller root mean square error, and a greater area under the curve value (AUC = 0.923), thus exhibiting the best discriminative performance. The AUC value for the external validation dataset was 0.921, thus confirming the high performance of the model. NFE2L2, NLRP3, GLS, LIPT1, and MTF1 were identified as potential cuproptosis predictors, thus shedding new light on ischemic stroke pathogenesis and heterogeneity.
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Affiliation(s)
- Chunhua Liu
- Department of Rehabilitation Research, Lishui Hospital of Traditional Chinese Medicine Affiliated to the Zhejiang University of Chinese Medicine
| | - Binbin Wu
- Department of Rehabilitation Research, Lishui Hospital of Traditional Chinese Medicine Affiliated to the Zhejiang University of Chinese Medicine
| | - Yongjun Tao
- Department of Rehabilitation Research, Lishui Hospital of Traditional Chinese Medicine Affiliated to the Zhejiang University of Chinese Medicine
| | - Xiang Liu
- Department of Rehabilitation Research, Lishui Hospital of Traditional Chinese Medicine Affiliated to the Zhejiang University of Chinese Medicine
| | - Xiqiang Lou
- Department of Rehabilitation Research, Lishui Hospital of Traditional Chinese Medicine Affiliated to the Zhejiang University of Chinese Medicine
| | - Zhen Wang
- Department of Rehabilitation Research, Lishui Hospital of Traditional Chinese Medicine Affiliated to the Zhejiang University of Chinese Medicine
| | - Zhaofu Guo
- Department of Rehabilitation Research, Lishui Hospital of Traditional Chinese Medicine Affiliated to the Zhejiang University of Chinese Medicine
| | - Dongmei Tang
- Department of Rehabilitation Research, Lishui Second People’s Hospital, Zhejiang, China
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Liu T, Wang W, Li X, Chen Y, Mu F, Wen A, Liu M, Ding Y. Advances of phytotherapy in ischemic stroke targeting PI3K/Akt signaling. Phytother Res 2023; 37:5509-5528. [PMID: 37641491 DOI: 10.1002/ptr.7994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 07/29/2023] [Accepted: 08/15/2023] [Indexed: 08/31/2023]
Abstract
The pathogenesis of ischemic stroke is complex, and PI3K/Akt signaling is considered to play a crucial role in it. The PI3K/Akt pathway regulates inflammation, oxidative stress, apoptosis, autophagy, and vascular endothelial homeostasis after cerebral ischemia; therefore, drug research targeting the PI3K/Akt pathway has become the focus of scientists. In this review, we analyzed the research reports of antiischemic stroke drugs targeting the PI3K/Akt pathway in the past two decades. Because of the rich sources of natural products, increasing studies have explored the value of natural compounds, including Flavonoids, Quinones, Alkaloids, Phenylpropanoids, Phenols, Saponins, and Terpenoids, in alleviating neurological impairment and achieved satisfactory results. Herbal extracts and medicinal formulas have been applied in the treatment of ischemic stroke for thousands of years in East Asian countries. These precious clinical experiences provide a new avenue for research of antiischemic stroke drugs. Finally, we summarize and discuss the characteristics and shortcomings of the current research and put forward prospects for further in-depth exploration.
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Affiliation(s)
- Tianlong Liu
- Department of Pharmacy, The 940th Hospital Joint Logistics Support Forces of PLA, Lanzhou, China
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Wenjun Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaolin Li
- Department of Pharmacy, The 940th Hospital Joint Logistics Support Forces of PLA, Lanzhou, China
| | - Yidan Chen
- Department of Pharmacy, The 940th Hospital Joint Logistics Support Forces of PLA, Lanzhou, China
| | - Fei Mu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Aidong Wen
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Minna Liu
- Department of Nephrology, The 940th Hospital Joint Logistics Support Forces of PLA, Lanzhou, China
| | - Yi Ding
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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Zhao JJ, Zhao B, Bai X, Zhang S, Xu R. Aucubin promotes activation of AMPK and alleviates cerebral ischemia/reperfusion injury in rats. Cell Stress Chaperones 2023; 28:801-809. [PMID: 37608231 PMCID: PMC10746661 DOI: 10.1007/s12192-023-01372-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/02/2023] [Accepted: 08/14/2023] [Indexed: 08/24/2023] Open
Abstract
In the current investigation, we explored the benefits of aucubin against rodent ischemia/reperfusion (I/R) damages in brains and elucidated the role of 5'-AMP-activated protein kinase (AMPK) in its neuroprotective action. I/R model of brain was established in male three-month-old rats through 2 h of middle cerebral artery occlusion followed by two days of reperfusion. Aucubin boosted phosphorylation of AMPKα in ipsilateral cortex of injured rats. Then, rats were exposed to cerebral I/R damage and received treatment of aucubin and compound C (a well-known AMPK inhibitor). It was found that aucubin administration improved neurological symptom score, decreased infarct volume, and mitigated cerebral edema in injured rats. Aucubin administration upregulated Nrf2 expression and abated oxidative stress in ipsilateral cortex of injured rats. Aucubin administration reduced levels of multiple pro-inflammatory cytokines, suppressed microglial activation and neutrophil infiltration, and promoted M2 polarization in injured rats. More importantly, compound C abolished the neuroprotective, anti-oxidant and inflammation-modulating effects of aucubin in injured rats, at least in part. Therefore, we concluded that activation of AMPK by aucubin alleviated I/R injury in brain through abating oxidative stress and suppressing inflammation, identifying a potential candidate for those patients of ischemic stroke.
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Affiliation(s)
- Jin-Jing Zhao
- Department of Neurology, The 305 Hospital of the People's Liberation Army, Beijing, China
| | - Bo Zhao
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xiao Bai
- Department of Geriatrics, The Third Medical Centre of Chinese People's Liberation Army General Hospital, Beijing, China
| | - Shuang Zhang
- Department of Neurology, The 305 Hospital of the People's Liberation Army, Beijing, China
| | - Rui Xu
- Department of Neurology, The 305 Hospital of the People's Liberation Army, Beijing, China.
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14
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Lahiri A, Walton JC, Zhang N, Billington N, DeVries AC, Meares GP. Astrocytic deletion of protein kinase R-like ER kinase (PERK) does not affect learning and memory in aged mice but worsens outcome from experimental stroke. J Neurosci Res 2023; 101:1586-1610. [PMID: 37314006 PMCID: PMC10524975 DOI: 10.1002/jnr.25224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 05/22/2023] [Accepted: 05/27/2023] [Indexed: 06/15/2023]
Abstract
Aging is associated with cognitive decline and is the main risk factor for a myriad of conditions including neurodegeneration and stroke. Concomitant with aging is the progressive accumulation of misfolded proteins and loss of proteostasis. Accumulation of misfolded proteins in the endoplasmic reticulum (ER) leads to ER stress and activation of the unfolded protein response (UPR). The UPR is mediated, in part, by the eukaryotic initiation factor 2α (eIF2α) kinase protein kinase R-like ER kinase (PERK). Phosphorylation of eIF2α reduces protein translation as an adaptive mechanism but this also opposes synaptic plasticity. PERK, and other eIF2α kinases, have been widely studied in neurons where they modulate both cognitive function and response to injury. The impact of astrocytic PERK signaling in cognitive processes was previously unknown. To examine this, we deleted PERK from astrocytes (AstroPERKKO ) and examined the impact on cognitive functions in middle-aged and old mice of both sexes. Additionally, we tested the outcome following experimental stroke using the transient middle cerebral artery occlusion (MCAO) model. Tests of short-term and long-term learning and memory as well as of cognitive flexibility in middle-aged and old mice revealed that astrocytic PERK does not regulate these processes. Following MCAO, AstroPERKKO had increased morbidity and mortality. Collectively, our data demonstrate that astrocytic PERK has limited impact on cognitive function and has a more prominent role in the response to neural injury.
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Affiliation(s)
| | | | | | | | - A Courtney DeVries
- Department of Neuroscience
- Rockefeller Neuroscience Institute
- Department of Medicine, Division of Hematology and Oncology
- WVU Cancer Institute, Morgantown, WV- 26506, USA
- West Virginia Clinical and Translational Science Institute, West Virginia University, Morgantown, WV- 26506, USA
| | - Gordon P. Meares
- Department of Microbiology, Immunology and Cell Biology
- Department of Neuroscience
- Rockefeller Neuroscience Institute
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15
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Li Z, Chen Z, Peng J. Neural stem cell-derived exosomal FTO protects neuron from microglial inflammatory injury by inhibiting microglia NRF2 mRNA m6A modification. J Neurogenet 2023; 37:103-114. [PMID: 37812019 DOI: 10.1080/01677063.2023.2259995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 09/13/2023] [Indexed: 10/10/2023]
Abstract
Ischemic stroke (IS) can cause neuronal cell loss and function defects. Exosomes derived from neural stem cells (NSC-Exos) improve neural plasticity and promote neural function repair following IS. However, the potential mechanism remains unclear. In this study, NSC-Exos were characterized and co-cultured with microglia. We found that NSC-Exos increased NRF2 expression in oxygen-glucose deprivation/reoxygenation and LPS-induced microglia and converted microglia from M1 pro-inflammatory phenotype to M2 anti-inflammatory phenotype. NSC-Exos reduced m6A methylation modification of nuclear factor erythroid 2-related factor 2 (NRF2) mRNA via obesity-associated gene (FTO). Furthermore, NSC-Exos reduced the damage to neurons caused by microglia's inflammatory response. Finally, the changes in microglia polarization and neuron damage caused by FTO knockdown in NSE-Exos were attenuated by NRF2 overexpression in microglia. These findings revealed that NSC-Exos promotes NRF2 expression and M2 polarization of microglial via transferring FTO, thereby resulting in neuroprotective effects.
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Affiliation(s)
- Zhiyong Li
- Medical Quality Management Department, The First Affiliated Hospital of Hainan Medical College, Haikou, Hainan, China
| | - Zhenggang Chen
- Neurosurgery Department, The First Affiliated Hospital of Hainan Medical College, Haikou, Hainan, China
| | - Jun Peng
- Neurosurgery Department, Haikou Affiliated Hospital of Central South University Xiangya School of Medicine, Haikou, Hainan, China
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16
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Zhang Q, Yao M, Qi J, Song R, Wang L, Li J, Zhou X, Chang D, Huang Q, Li L, Wang N. Puerarin inhibited oxidative stress and alleviated cerebral ischemia-reperfusion injury through PI3K/Akt/Nrf2 signaling pathway. Front Pharmacol 2023; 14:1134380. [PMID: 37284311 PMCID: PMC10240043 DOI: 10.3389/fphar.2023.1134380] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 05/09/2023] [Indexed: 06/08/2023] Open
Abstract
Introduction: Puerarin (PUE) is a natural compound isolated from Puerariae Lobatae Radix, which has a neuroprotective effect on IS. We explored the therapeutic effect and underlying mechanism of PUE on cerebral I/R injury by inhibiting oxidative stress related to the PI3K/Akt/Nrf2 pathway in vitro and in vivo. Methods: The middle cerebral artery occlusion and reperfusion (MCAO/R) rats and oxygen-glucose deprivation and reperfusion (OGD/R) were selected as the models, respectively. The therapeutic effect of PUE was observed using triphenyl tetrazolium and hematoxylin-eosin staining. Tunel-NeuN staining and Nissl staining to quantify hippocampal apoptosis. The reactive oxygen species (ROS) level was detected by flow cytometry and immunofluorescence. Biochemical method to detect oxidative stress levels. The protein expression related to PI3K/Akt/Nrf2 pathway was detected by using Western blotting. Finally, co-immunoprecipitation was used to study the molecular interaction between Keap1 and Nrf2. Results: In vivo and vitro studies showed that PUE improved neurological deficits in rats, as well as decreased oxidative stress. Immunofluorescence and flow cytometry indicated that the release of ROS can be inhibited by PUE. In addition, the Western blotting results showed that PUE promoted the phosphorylation of PI3K and Akt, and enabled Nrf2 to enter the nucleus, which further activated the expression of downstream antioxidant enzymes such as HO-1. The combination of PUE with PI3K inhibitor LY294002 reversed these results. Finally, co-immunoprecipitation results showed that PUE promoted Nrf2-Keap1 complex dissociation. Discussion: Taken together, PUE can activate Nrf2 via PI3K/Akt and promote downstream antioxidant enzyme expression, which could further ameliorate oxidative stress, against I/R-induced Neuron injury.
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Affiliation(s)
- Qianqian Zhang
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Chinese Medicinal Formula, Anhui University of Chinese Medicine, Hefei, China
| | - Min Yao
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Chinese Medicinal Formula, Anhui University of Chinese Medicine, Hefei, China
| | - Jiajia Qi
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Chinese Medicinal Formula, Anhui University of Chinese Medicine, Hefei, China
| | - Rui Song
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Lei Wang
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Chinese Medicinal Formula, Anhui University of Chinese Medicine, Hefei, China
| | - Jiacheng Li
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Chinese Medicinal Formula, Anhui University of Chinese Medicine, Hefei, China
| | - Xian Zhou
- National Institute of Complementary Medicine, Western Sydney University, Westmead, NSW, Australia
| | - Dennis Chang
- National Institute of Complementary Medicine, Western Sydney University, Westmead, NSW, Australia
| | - Qi Huang
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Anhui University of Chinese Medicine, Hefei, China
| | - Lili Li
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Chinese Medicinal Formula, Anhui University of Chinese Medicine, Hefei, China
- Institute for Pharmacodynamics and Safety Evaluation of Chinese Medicine, Anhui Academy of Traditional Chinese Medicine, Hefei, China
| | - Ning Wang
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Chinese Medicinal Formula, Anhui University of Chinese Medicine, Hefei, China
- Institute for Pharmacodynamics and Safety Evaluation of Chinese Medicine, Anhui Academy of Traditional Chinese Medicine, Hefei, China
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17
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Owjfard M, Karimi F, Mallahzadeh A, Nabavizadeh SA, Namavar MR, Saadi MI, Hooshmandi E, Salehi MS, Zafarmand SS, Bayat M, Karimlou S, Borhani-Haghighi A. Mechanism of action and therapeutic potential of dimethyl fumarate in ischemic stroke. J Neurosci Res 2023. [PMID: 37183360 DOI: 10.1002/jnr.25202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 04/09/2023] [Accepted: 04/21/2023] [Indexed: 05/16/2023]
Abstract
Dimethyl fumarate (DMF) is an immunomodulatory drug currently approved for the treatment of multiple sclerosis and psoriasis. Its benefits on ischemic stroke outcomes have recently come to attention. To date, only tissue plasminogen activators (tPAs) and clot retrieval methods have been approved by the FDA for the treatment of ischemic stroke. Ischemic conditions lead to inflammation through diverse mechanisms, and recanalization can worsen the state. DMF and the nuclear factor erythroid-derived 2-related factor 2 (Nrf2) pathway it regulates seem to be important in postischemic inflammation, and animal studies have demonstrated that the drug improves overall stroke outcomes. Although the exact mechanism is still unknown, studies indicate that these beneficial impacts are due to the modulation of immune responses, blood-brain barrier permeability, and hemodynamic adjustments. One major component evaluated before, during, and after tPA therapy in stroke patients is blood pressure (BP). Recent studies have found that DMF may impact BP. Both hypotension and hypertension need correction before treatment, which may delay the appropriate intervention. Since BP management is crucial in managing stroke patients, it is important to consider DMF's role in this matter. That being said, it seems further investigations on DMF may lead to an alternative approach for stroke patients. In this article, we discuss the mechanistic roles of DMF and its potential role in stroke based on previously published literature and laboratory findings.
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Affiliation(s)
- Maryam Owjfard
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Shiraz University of Applied Science and Technology (UAST), Shiraz, Iran
| | | | - Arashk Mallahzadeh
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyed Ali Nabavizadeh
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Reza Namavar
- Histomorphometry and Stereology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Anatomical Sciences, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Etrat Hooshmandi
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Saied Salehi
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Mahnaz Bayat
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sedigheh Karimlou
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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18
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Kim SY, Kim YJ, Cho SY, Lee HG, Kwon S, Park SU, Jung WS, Moon SK, Park JM, Cho KH, Ko CN. Efficacy of Artemisia annua Linné in improving cognitive impairment in a chronic cerebral hypoperfusion-induced vascular dementia animal model. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 112:154683. [PMID: 36738479 DOI: 10.1016/j.phymed.2023.154683] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/02/2022] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Vascular dementia (VaD) is the second most common type of dementia after Alzheimer's disease. Currently, no FDA-approved drugs are available for the treatment of VaD. Artemisia annua Linné (AA) is known to have antioxidant properties, but its effects and mechanisms of action on cognitive impairment are still unknown. PURPOSE In this study, the improvement in cognitive impairment by AA in terms of protection against oxidative stress, neuroinflammation, and preservation of the integrity of the neurovascular unit (NVU) was assessed in an animal model of VaD with bilateral common carotid artery occlusion (BCCAO). METHODS Eight-week-old male Wistar rats were allowed to adapt for four weeks, and BCCAO was induced at 12 weeks of age. The rats were randomly assigned into four groups, with seven rats in each group: sham group without BCCAO, VaD group that received oral administration of distilled water after BCCAO surgery, and two AA groups that received oral administration of 150 mg/kg or 750 mg/kg AA after BCCAO surgery for 8 weeks. Nine weeks after BCCAO surgery, the cognitive function of the rats was evaluated and accumulated oxidative stress was assessed by immunohistochemistry, immunofluorescence, and western blotting. Damage to the components of the NVU was evaluated, and sirtuin (Sirt) 1 and 2 expression and nuclear factor-erythrocyte 2-associated factor 2 (Nrf2)/Kelch-like ECH-associated protein1 (Keap1) activation were investigated to assess the reduction in cell signaling and antioxidant pathways. RESULTS BCCAO-induced cerebral perfusion decreased memory function and induced neuroinflammation and oxidative stress. But AA treatment mitigated cognitive impairment and reduced neuroinflammation and oxidative stress caused by chronic cerebral hypoperfusion. AA extracts activated the Nrf2/Keap1/activating antioxidant response elements pathway and maintained Sirt 1 and 2, subsequently leading to the maintenance of neurons, improved construct of microvessels, increased platelet-derived growth factor receptor beta, and platelet-endothelial cell adhesion molecule-1 associated with the blood-brain barrier integrity. CONCLUSION AA is effective in alleviating BCCAO-induced cognitive decline and its administration may be a useful therapeutic approach for VaD.
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Affiliation(s)
- Seo-Young Kim
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Youn-Jung Kim
- College of Nursing Science, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Seung-Yeon Cho
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; Stroke and Neurological Disorders Center, Kyung Hee University Hospital at Gangdong, Kyung Hee University, 892 Dongnam-ro, Gangdong-gu, Seoul 05278, Republic of Korea
| | - Han-Gyul Lee
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Seungwon Kwon
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Seong-Uk Park
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; Stroke and Neurological Disorders Center, Kyung Hee University Hospital at Gangdong, Kyung Hee University, 892 Dongnam-ro, Gangdong-gu, Seoul 05278, Republic of Korea
| | - Woo-Sang Jung
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Sang-Kwan Moon
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Jung-Mi Park
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; Stroke and Neurological Disorders Center, Kyung Hee University Hospital at Gangdong, Kyung Hee University, 892 Dongnam-ro, Gangdong-gu, Seoul 05278, Republic of Korea
| | - Ki-Ho Cho
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Chang-Nam Ko
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; Stroke and Neurological Disorders Center, Kyung Hee University Hospital at Gangdong, Kyung Hee University, 892 Dongnam-ro, Gangdong-gu, Seoul 05278, Republic of Korea.
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Fan X, Chen H, Jiang F, Xu C, Wang Y, Wang H, Li M, Wei W, Song J, Zhong D, Li G. Comprehensive analysis of cuproptosis-related genes in immune infiltration in ischemic stroke. Front Neurol 2023; 13:1077178. [PMID: 36818726 PMCID: PMC9933552 DOI: 10.3389/fneur.2022.1077178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 12/28/2022] [Indexed: 02/05/2023] Open
Abstract
Background Immune infiltration plays an important role in the course of ischemic stroke (IS) progression. Cuproptosis is a newly discovered form of programmed cell death. To date, no studies on the mechanisms by which cuproptosis-related genes regulate immune infiltration in IS have been reported. Methods IS-related microarray datasets were retrieved from the Gene Expression Omnibus (GEO) database and standardized. Immune infiltration was extracted and quantified based on the processed gene expression matrix. The differences between the IS group and the normal group as well as the correlation between the infiltrating immune cells and their functions were analyzed. The cuproptosis-related DEGs most related to immunity were screened out, and the risk model was constructed. Finally, Gene Ontology (GO) function, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses and drug target were performed using the Enrichr website database. miRNAs were predicted using FunRich software. Finally, cuproptosis-related differentially expressed genes (DEGs) in IS samples were typed, and Gene Set Variation Analysis (GSVA) was used to analyze the differences in biological functions among the different types. Results Seven Cuproptosis-related DEGs were obtained by merging the GSE16561 and GSE37587 datasets. Correlation analysis of the immune cells showed that NLRP3, NFE2L2, ATP7A, LIPT1, GLS, and MTF1 were significantly correlated with immune cells. Subsequently, these six genes were included in the risk study, and the risk prediction model was constructed to calculate the total score to analyze the risk probability of the IS group. KEGG analysis showed that the genes were mainly enriched in the following two pathways: D-glutamine and D-glutamate metabolism; and lipids and atherosclerosis. Drug target prediction found that DMBA CTD 00007046 and Lithocholate TTD 00009000 were predicted to have potential therapeutic effects of candidate molecules. GSVA showed that the TGF-β signaling pathway and autophagy regulation pathways were upregulated in the subgroup with high expression of cuproptosis-related DEGs. Conclusions NLRP3, NFE2L2, ATP7A, LIPT1, GLS and MTF1 may serve as predictors of cuproptosis and play an important role in the pathogenesis of immune infiltration in IS.
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Li Y, Luo Y, Wang J, Shi H, Liao J, Wang Y, Chen Z, Xiong L, Zhang C, Wang T. Discovery of novel danshensu derivatives bearing pyrazolone moiety as potential anti-ischemic stroke agents with antioxidant activity. Bioorg Chem 2023; 131:106283. [PMID: 36436417 DOI: 10.1016/j.bioorg.2022.106283] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/07/2022] [Accepted: 11/15/2022] [Indexed: 11/21/2022]
Abstract
Neuroprotective agents with attenuation of oxidative stress by directly scavenging ROS and indirectly through Keap1-Nrf2 signal pathway activation may be a promising cerebral ischemic stroke therapeutic strategy. In this study, a series of novel danshensu derivatives bearing pyrazolone moieties with dual antioxidant effects were synthesized for the treatment of ischemic stroke. Most compounds exhibited considerable DPPH free radical scavenging ability and neuroprotective activity against H2O2-induced oxidative injury in PC12 neuronal cells, without cytotoxicity. Among these target compounds, Del03 displayed the strongest dose-dependent neuroprotective activity in vitro, directly downregulated intracellular ROS levels, and improved the oxidative stress parameters MDA, SOD, and LDH. Del03 also promoted Nrf2 translocation to the nucleus, subsequently increasing the expression of the Nrf2 downstream target HO-1. Molecular docking analysis revealed that Del03 could anchor to the key site of Keap1. Del03 possessed the ability to penetrate blood-brain barrier and displayed good ability on pharmacokinetic properties in rats Del03 possessed good BBB penetration efficiency, suitable pharmacokinetic properties in vivo. Del03 reduced cerebral infarction volume and promoted neurological function in a middle cerebral artery occlusion (MCAO) mouse model at a dose of 20 mg/kg by intravenous injection. The characteristics of Del03 detailed in this study demonstrate its potential as a therapeutic agent in the treatment of ischemic stroke.
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Affiliation(s)
- Yi Li
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Yunchun Luo
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Jing Wang
- Department of Pharmacy, Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, Shanghai 201700, China
| | - Hao Shi
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Jun Liao
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Yan Wang
- Baoshan Zhaohui New Drug R & D and Transformation Functional Platform, Zhaohui Pharmaceutical, Shanghai 201908, China
| | - Zhesheng Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, New York 11439, USA
| | - Liyan Xiong
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China.
| | - Chuan Zhang
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China.
| | - Tingfang Wang
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China.
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Beresewicz-Haller M. Hippocampal region-specific endogenous neuroprotection as an approach in the search for new neuroprotective strategies in ischemic stroke. Fiction or fact? Neurochem Int 2023; 162:105455. [PMID: 36410452 DOI: 10.1016/j.neuint.2022.105455] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 11/03/2022] [Accepted: 11/17/2022] [Indexed: 11/23/2022]
Abstract
Ischemic stroke is the leading cause of death and long-term disability worldwide, and, while considerable progress has been made in understanding its pathophysiology, the lack of effective treatments remains a major concern. In that context, receiving more and more consideration as a promising therapeutic method is the activation of natural adaptive mechanisms (endogenous neuroprotection) - an approach that seeks to enhance and/or stimulate the endogenous processes of plasticity and protection of the neuronal system that trigger the brain's intrinsic capacity for self-defence. Ischemic preconditioning is a classic example of endogenous neuroprotection, being the process by which one or more brief, non-damaging episodes of ischemia-reperfusion (I/R) induce tissue resistance to subsequent prolonged, damaging ischemia. Another less-known example is resistance to an I/R episode mounted by the hippocampal region consisting of CA2, CA3, CA4 and the dentate gyrus (here abbreviated to CA2-4, DG). This can be contrasted with the ischemia-vulnerable CA1 region. There is not yet a good understanding of these different sensitivities of the hippocampal regions, and hence of the endogenous neuroprotection characteristic of CA2-4, DG. However, this region is widely reported to have properties distinct from CA1, and capable of generating resistance to an I/R episode. These include activation of neurotrophic and neuroprotective factors, greater activation of anti-excitotoxic and anti-oxidant mechanisms, increased plasticity potential, a greater energy reserve and improved mitochondrial function. This review seeks to summarize properties of CA2-4, DG in the context of endogenous neuroprotection, and then to assess the potential utility of these properties to therapeutic approaches. In so doing, it appears to represent the first such addressing of the issue of ischemia resistance attributable to CA2-4, DG.
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22
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Is Nrf2 Behind Endogenous Neuroprotection of the Hippocampal CA2-4,DG Region? Mol Neurobiol 2023; 60:1645-1658. [PMID: 36547847 PMCID: PMC9899192 DOI: 10.1007/s12035-022-03166-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 12/10/2022] [Indexed: 12/24/2022]
Abstract
The transcription factor nuclear factor-erythroid 2-related factor 2 (Nrf2) is the master regulator of genes known to be involved in antioxidant, and anti-inflammatory processes, metabolic regulation, and other cellular functions. Here, we also hypothesize a core role for it in endogenous neuroprotection, i.e., the natural adaptive mechanisms protecting the brain from ischemia-reperfusion (I/R) episode. An example of endogenous neuroprotection is ischemia-resistance of the hippocampal regions comprising the CA2, CA3, CA4 and dentate gyrus subfields (here abbreviated to CA2-4,DG) which can be contrasted with the ischemia-vulnerable CA1 region. In the work detailed here, we used a gerbil model of transient cerebral ischemia to examined Nrf2 activation in CA1 and CA2-4,DG, in a control group, and post I/R episode. Data obtained indicate enhanced Nrf2 activity in CA2-4,DG as compared with CA1 in the control, with this difference seen to persist even after I/R. While I/R does indeed cause further activation of Nrf2 in CA2-4,DG, it is associated with slight and transient activation in CA1. Sub-regional differences in Nrf2 activity correlate with immunoreactivity of Keap1 (an Nrf2 suppressor) and Nrf2 target proteins, including heme oxygenase 1, the catalytic and modulatory sub-units of glutamate-cysteine ligase, and glutathione peroxidase 1. Pharmacological Nrf2 activation by sulforaphane results in protection of CA1 after I/R episode. Our results therefore suggest that high Nrf2 activity in CA2-4,DG may guarantee resistance of this region to I/R, potentially explaining the differential sensitivities of the hippocampal regions.
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McClendon LK, Garcia RL, Lazaro T, Robledo A, Vasandani V, Luna ZAE, Rao AS, Srivatsan A, Lonard DM, Dacso CC, Kan P, O’Malley BW. A steroid receptor coactivator small molecule "stimulator" attenuates post-stroke ischemic brain injury. Front Mol Neurosci 2022; 15:1055295. [PMID: 36533127 PMCID: PMC9751323 DOI: 10.3389/fnmol.2022.1055295] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 11/10/2022] [Indexed: 11/15/2023] Open
Abstract
Introduction: Pathologic remodeling of the brain following ischemic stroke results in neuronal loss, increased inflammation, oxidative stress, astrogliosis, and a progressive decrease in brain function. We recently demonstrated that stimulation of steroid receptor coactivator 3 with the small-molecule stimulator MCB-613 improves cardiac function in a mouse model of myocardial ischemia. Since steroid receptor coactivators are ubiquitously expressed in the brain, we reasoned that an MCB-613 derivative (MCB-10-1), could protect the brain following ischemic injury. To test this, we administered MCB-10-1 to rats following middle cerebral artery occlusion and reperfusion. Methods: Neurologic impairment and tissue damage responses were evaluated on day 1 and day 4 following injury in rats treated with control or 10-1. Results: We show that 10-1 attenuates injury post-stroke. 10-1 decreases infarct size and mitigates neurologic impairment. When given within 30 min post middle cerebral artery occlusion and reperfusion, 10-1 induces lasting protection from tissue damage in the ischemic penumbra concomitant with: (1) promotion of reparative microglia; (2) an increase in astrocyte NRF2 and GLT-1 expression; (3) early microglia activation; and (4) attenuation of astrogliosis. Discussion: Steroid receptor coactivator stimulation with MCB-10-1 is a potential therapeutic strategy for reducing inflammation and oxidative damage that cause neurologic impairment following an acute ischemic stroke.
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Affiliation(s)
- Lisa K. McClendon
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
- CoRegen, Inc., Baylor College of Medicine, Houston, TX, United States
| | - Roberto L. Garcia
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX, United States
| | - Tyler Lazaro
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX, United States
| | - Ariadna Robledo
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX, United States
| | - Viren Vasandani
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX, United States
| | - Zean Aaron Evan Luna
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX, United States
| | - Abhijit S. Rao
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX, United States
| | - Aditya Srivatsan
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX, United States
| | - David M. Lonard
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
- CoRegen, Inc., Baylor College of Medicine, Houston, TX, United States
| | - Clifford C. Dacso
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
- CoRegen, Inc., Baylor College of Medicine, Houston, TX, United States
| | - Peter Kan
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX, United States
| | - Bert W. O’Malley
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
- CoRegen, Inc., Baylor College of Medicine, Houston, TX, United States
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Miao Q, Wang R, Sun X, Du S, Liu L. Combination of puerarin and tanshinone IIA alleviates ischaemic stroke injury in rats via activating the Nrf2/ARE signalling pathway. PHARMACEUTICAL BIOLOGY 2022; 60:1022-1031. [PMID: 35635784 PMCID: PMC9176674 DOI: 10.1080/13880209.2022.2070221] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 03/16/2022] [Accepted: 04/20/2022] [Indexed: 06/08/2023]
Abstract
CONTEXT Puerarin (Pue) and tanshinone IIA (Tan IIA) are often used in combination in the treatment of cerebrovascular diseases. OBJECTIVE To investigate the neuroprotective effect and synergic mechanism of Pue-Tan IIA on the treatment of ischaemic stroke (IS). MATERIALS AND METHODS IS was induced in rats by middle cerebral artery occlusion (MCAO). Rats were intraperitoneally injected with Pue (36 mg/kg), Tan IIA (7.2 mg/kg), or Pue-Tan IIA (36 and 7.2 mg/kg) for five times [30 min before ischaemia, immediately after reperfusion (0 h), 24, 48, and 72 h after reperfusion]. After administration, neurological function assessment and histological changes in the brain were performed. S-100β and NSE levels were measured to determine the severity of brain injury. Oxidative stress parameters and inflammatory mediators were measured. The proteins involved in Nrf2/ARE signalling pathway were determined by qRT-PCR and western blot. RESULTS After administration, the neurological function scores, infarct volume, S-100β, and NSE levels were significantly reduced in MCAO rats, especially with Pue-Tan IIA treatment (p < 0.05). All treatments increased T-AOC, CAT, SOD, and GSH activities and reduced GSSG activity and MDA, TNF-α, IL-6, ICAM-1, and COX-2 levels in MCAO rats. Pue-Tan IIA significantly increased Nrf2 expression in the nucleus (1.81-fold) and decreased its expression in the cytoplasm (0.60-fold). Pue-Tan IIA significantly increased the expressions of HO-1 (1.87-fold) and NQO1 (1.76-fold) and decreased Keap1 expression (0.39-fold). DISCUSSION AND CONCLUSIONS The combination of Pue and Tan IIA could alleviate ischaemic brain injury by activating Nrf2/ARE signalling pathway, providing an experimental basis for clinical applications.
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Affiliation(s)
- Qing Miao
- China Academy of Chinese Medical Sciences, Institute of Basic Theory for Chinese Medicine, Beijing, China
| | - Ruihai Wang
- China Academy of Chinese Medical Sciences, Institute of Basic Theory for Chinese Medicine, Beijing, China
| | - Xiaoxin Sun
- China Academy of Chinese Medical Sciences, Institute of Basic Theory for Chinese Medicine, Beijing, China
| | - Song Du
- China Academy of Chinese Medical Sciences, Institute of Basic Theory for Chinese Medicine, Beijing, China
| | - Limei Liu
- China Academy of Chinese Medical Sciences, Institute of Basic Theory for Chinese Medicine, Beijing, China
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Zhang S, Ye J, Wang L, Zhong X, Zou X, Qiu F, Huang Z. Piceatannol protects rat neuron cells from oxygen-glucose deprivation reperfusion injury via regulation of GSK-3β/Nrf2 signaling pathway. Zhejiang Da Xue Xue Bao Yi Xue Ban 2022; 51:552-562. [PMID: 36581571 PMCID: PMC10264976 DOI: 10.3724/zdxbyxb-2022-0328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 09/20/2022] [Indexed: 12/03/2022]
Abstract
OBJECTIVE To investigate the effect and mechanism of piceatannol on cerebral ischemia-reperfusion injury. METHODS The oxygen-glucose deprivation reperfusion (OGD/R) model was constructed in primary cultured suckling rat cortical neuron cells. After 2 h of oxygen-glucose deprivation, the cells were treated with piceatannol for 24 h. The cell survival rate was detected by MTT assay, and the degree of cell damage was detected by intracellular lactate dehydrogenase (LDH) release assay. The activity of superoxide dismutase (SOD) and the content of adenosine triphosphate (ATP) were detected by colorimetric method. The content of reactive oxygen species (ROS) was detected by flow cytometry or observed with inverted fluorescence microscope. The ultrastructure of mitochondria was observed with transmission electron microscopy. Western blotting was used to detect the phosphorylation levels of protein kinase B (AKT) and glycogen synthase kinase (GSK)-3β. Immunofluorescence staining was used to observe the nuclear localization of nuclear factor-erythroid 2-related factor (Nrf) 2. After OGD/R neuron cells were pretreated with Nrf2 inhibitor ML385 for 24 h, the effect of Nrf2 on the improvement of cell activity and antioxidant activity of piceatannol were investigated. Western blotting was used to detect the protein expression levels of Nrf2, heme oxygenase (HO) 1 and NADPH quinone oxidoreductase (NQO) 1. RESULTS Piceatannol significantly increased the survival rate of OGD/R neurons, decreased LDH release and reactive oxygen species content, increased SOD activity, ameliorated mitochondrial ultrastructural damage, increased mitochondrial membrane potential and ATP level (all P<0.05), increased phosphorylation of AKT and GSK-3β protein, up-regulated the expression of Nrf2, HO-1 and NQO1 protein, increased the nuclear-to-plasma ratio of Nrf2, and promoted the nuclear transfer of Nrf2 (all P<0.05). ML385 could significantly reverse the rescue effect of paclitaxel on the model cells and the regulatory activities of SOD, ROS and LDH (all P<0.05). CONCLUSION Piceatannol can regulate Nrf2 by activating GSK-3β signaling pathway, promote its nuclear translocation, exert corresponding antioxidant effect, and protect mitochondrial structure and function in rat neuron cells.
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Affiliation(s)
- Shuyuan Zhang
- 1. School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Jiayi Ye
- 1. School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Lingfeng Wang
- 1. School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Xiaoming Zhong
- 1. School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Xiaowei Zou
- 1. School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Fengmei Qiu
- 1. School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Zhen Huang
- 1. School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
- 2. Zhejiang Provincial Key Laboratory of Neuropharmacology and Translational Medicine, Hangzhou 310053, China
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Ma F, Luo S, Lu C, Jiang X, Chen K, Deng J, Ma S, Li Z. The role of Nrf2 in periodontal disease by regulating lipid peroxidation, inflammation and apoptosis. Front Endocrinol (Lausanne) 2022; 13:963451. [PMID: 36482997 PMCID: PMC9723463 DOI: 10.3389/fendo.2022.963451] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 11/02/2022] [Indexed: 11/23/2022] Open
Abstract
Nuclear factor E2-related factor 2(Nrf2) is a transcription factor that mainly regulates oxidative stress in the body. It initiates the expression of several downstream antioxidants, anti-inflammatory proteins and detoxification enzymes through the Kelch-like ECH-associating protein 1 (Keap1) -nuclear factor E2-related factor 2(Nrf2) -antioxidant response element (ARE) signaling pathway. Its anti-apoptosis, anti-oxidative stress and anti-inflammatory effects have gradually become the focus of periodontal disease research in recent years. In this paper, the structure and function of Nrf2 pathway and its mechanism of action in the treatment of periodontitis in recent years were analyzed and summarized, so as to further clarify the relationship between Nrf2 pathway and oxidative stress in the occurrence and development of periodontitis, and to provide ideas for the development of new treatment drugs targeting Nrf2 pathway.
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Affiliation(s)
- Fengyu Ma
- Department of Stomatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
- School of Stomatology, Jinan University, Guangzhou, Guangdong, China
| | - Shangdie Luo
- Department of Orthodontics, Huizhou Stomatological Hospital, Huizhou, Guangdong, China
| | - Chunting Lu
- Science and Education Office, The First Affiliated Hospital, Jinan University, Guangzhou, Guangdong, China
| | - Xinrong Jiang
- Department of Stomatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
- School of Stomatology, Jinan University, Guangzhou, Guangdong, China
| | - Kexiao Chen
- Department of Stomatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
- School of Stomatology, Jinan University, Guangzhou, Guangdong, China
| | - Jianwen Deng
- Department of Stomatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
- School of Stomatology, Jinan University, Guangzhou, Guangdong, China
| | - Shuyuan Ma
- Department of Stomatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
| | - Zejian Li
- Department of Stomatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
- School of Stomatology, Jinan University, Guangzhou, Guangdong, China
- Chaoshan Hospital, The First Affiliated Hospital of Jinan University, Chaozhou, Guangdong, China
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Zhang J, Sun H, Zhu L, Du L, Ma Y, Ma Y, Yu J, Meng A. MicroRNA‑27a Aggravates Ferroptosis during early Ischemic Stroke of Rats Through Nrf2. Neuroscience 2022; 504:10-20. [PMID: 36180007 DOI: 10.1016/j.neuroscience.2022.09.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 09/13/2022] [Accepted: 09/16/2022] [Indexed: 11/16/2022]
Abstract
Ischaemic stroke (IS) is characterized by high morbidity, disability and mortality and lacks effective solutions. MiRNA-27a has been implicated in ferroptosis, but evidence that miRNA-27a regulates ferroptosis in ischaemic stroke is lacking. Nrf2 could reduce brain tissue injury in ischaemic stroke and resist ferroptosis. The current study aimed to investigate the relationship between miRNA-27a/Nrf2 and ferroptosis in ischaemic stroke. In this study, IS was simulated using a permanent middle cerebral artery occlusion (pMCAO) model. The degree of brain tissue injury was assessed by conducting TTC staining and neurological function scoring. MiRNA-27a expression levels were altered via the intracerebroventricular injection of miRNA‑27a agonist or antagonist. Glutathione peroxidase 4 (GPX4), glutathione (GSH), Fe and malondialdehyde (MDA) are considered biomarkers for ferroptosis. The expression of GPX4 and Nrf2 was analysed by Western blot assay. The GSH, Fe and MDA contents were detected by detection kits. We found that the expression levels of Fe and MDA were increased, while GPX4 and GSH were decreased in the pMCAO groups compared with the control group. These results indicated that ferroptosis intensified over time during IS. In addition, the miRNA‑27a agonist significantly aggravated ferroptosis and reduced neurological function scores compared with those of the control group. Subsequently, a luciferase reporter gene system verified the targeted binding of miRNA‑27a to Nrf2. The results showed that miRNA‑27a inhibited Nrf2 in a targeted manner, which also exacerbated the extent of ferroptosis. However, the miRNA‑27a antagonist reversed the miR‑27a agonist‑mediated effects. Therefore, the present study indicated that miRNA‑27a may aggravate brain tissue ferroptosis during ischaemic stroke, potentially by inhibiting Nrf2.
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Affiliation(s)
- Jing Zhang
- Affiliated hospital of North China university of Science and Technology, Tangshan, China; Key Laboratory of Medical Molecular Testing and Diagnosis in Tangshan, Tangshan, China
| | - Hui Sun
- Affiliated hospital of North China university of Science and Technology, Tangshan, China; Key Laboratory of Medical Molecular Testing and Diagnosis in Tangshan, Tangshan, China
| | - Lijun Zhu
- Affiliated hospital of North China university of Science and Technology, Tangshan, China; Key Laboratory of Medical Molecular Testing and Diagnosis in Tangshan, Tangshan, China
| | - Lin Du
- Affiliated hospital of North China university of Science and Technology, Tangshan, China; Key Laboratory of Medical Molecular Testing and Diagnosis in Tangshan, Tangshan, China
| | - Ye Ma
- Affiliated hospital of North China university of Science and Technology, Tangshan, China; Key Laboratory of Medical Molecular Testing and Diagnosis in Tangshan, Tangshan, China
| | - Yuqin Ma
- Affiliated hospital of North China university of Science and Technology, Tangshan, China; Key Laboratory of Medical Molecular Testing and Diagnosis in Tangshan, Tangshan, China
| | - Jiayu Yu
- Affiliated hospital of North China university of Science and Technology, Tangshan, China; Key Laboratory of Medical Molecular Testing and Diagnosis in Tangshan, Tangshan, China
| | - Aiguo Meng
- Affiliated hospital of North China university of Science and Technology, Tangshan, China; Key Laboratory of Medical Molecular Testing and Diagnosis in Tangshan, Tangshan, China.
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Sifat AE, Archie SR, Nozohouri S, Villalba H, Zhang Y, Sharma S, Ghanwatkar Y, Vaidya B, Mara D, Cucullo L, Abbruscato TJ. Short-term exposure to JUUL electronic cigarettes can worsen ischemic stroke outcome. Fluids Barriers CNS 2022; 19:74. [PMID: 36085043 PMCID: PMC9463848 DOI: 10.1186/s12987-022-00371-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 08/15/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The short and long-term health effects of JUUL electronic cigarette (e-Cig) are largely unknown and warrant extensive research. We hypothesized that JUUL exposure could cause cerebrovascular toxicities impacting the progression and outcome of ischemic stroke comparable to tobacco smoke (TS) exposure.
Methods
We exposed male C57 mice to TS/JUUL vapor for 14 days. LCMS/MS was used to measure brain and plasma nicotine and cotinine level. Transient middle cerebral artery occlusion (tMCAO) followed by reperfusion was used to mimic ischemic stroke. Plasma levels of IL-6 and thrombomodulin were assessed by enzyme-linked immunosorbent assay. At the same time, western blotting was used to study blood–brain barrier (BBB) tight junction (TJ) proteins expression and key inflammatory and oxidative stress markers.
Results
tMCAO upregulated IL-6 and decreased plasma thrombomodulin levels. Post-ischemic brain injury following tMCAO was significantly worsened by JUUL/TS pre-exposure. TJ proteins expression was also downregulated by JUUL/TS pre-exposure after tMCAO. Like TS, exposure to JUUL downregulated the expression of the antioxidant Nrf2. ICAM-1 was upregulated in mice subjected to tMCAO following pre-exposure to TS or JUUL, with a greater effect of TS than JUUL.
Conclusions
These results suggest that JUUL exposure could negatively impact the cerebrovascular system, although to a lesser extent than TS exposure.
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Nrf2 Pathway and Autophagy Crosstalk: New Insights into Therapeutic Strategies for Ischemic Cerebral Vascular Diseases. Antioxidants (Basel) 2022; 11:antiox11091747. [PMID: 36139821 PMCID: PMC9495910 DOI: 10.3390/antiox11091747] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/27/2022] [Accepted: 08/30/2022] [Indexed: 11/17/2022] Open
Abstract
Cerebrovascular disease is highly prevalent and has a complex etiology and variable pathophysiological activities. It thus poses a serious threat to human life and health. Currently, pathophysiological research on cerebrovascular diseases is gradually improving, and oxidative stress and autophagy have been identified as important pathophysiological activities that are gradually attracting increasing attention. Many studies have found some effects of oxidative stress and autophagy on cerebrovascular diseases, and studies on the crosstalk between the two in cerebrovascular diseases have made modest progress. However, further, more detailed studies are needed to determine the specific mechanisms. This review discusses nuclear factor erythroid 2-related factor 2 (Nrf2) molecules, which are closely associated with oxidative stress and autophagy, and the crosstalk between them, with the aim of providing clues for studying the two important pathophysiological changes and their crosstalk in cerebrovascular diseases as well as exploring new target treatments.
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Zhang R, Lei J, Chen L, Wang Y, Yang G, Yin Z, Luo L. γ-Glutamylcysteine Exerts Neuroprotection Effects against Cerebral Ischemia/Reperfusion Injury through Inhibiting Lipid Peroxidation and Ferroptosis. Antioxidants (Basel) 2022; 11:antiox11091653. [PMID: 36139727 PMCID: PMC9495808 DOI: 10.3390/antiox11091653] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/21/2022] [Accepted: 08/22/2022] [Indexed: 11/16/2022] Open
Abstract
Ferroptosis is a non-apoptotic form of cell death driven by iron-dependent lipid peroxidation. Recent evidence indicates that inhibiting ferroptosis could alleviate cerebral ischemia/reperfusion (CIR) injury. γ-glutamylcysteine (γ-GC), an intermediate of glutathione (GSH) synthesis, can upregulate GSH in brains. GSH is the co-factor of glutathione peroxidase 4 (GPX4), which is the negative regulator of ferroptosis. In this study, we explored the effect of γ-GC on CIR-induced neuronal ferroptosis and brain injury. We found that γ-GC significantly reduced the volume of cerebral infarction, decreased the loss of neurons and alleviated neurological dysfunction induced by CIR in rats. Further observation showed that γ-GC inhibited the CIR-caused rupture of the neuronal mitochondrial outer membrane and the disappearance of cristae, and decreased Fe2+ deposition and lipid peroxidation in rat cerebral cortices. Meanwhile, γ-GC altered the expression of some ferroptosis-related proteins in rat brains. Mechanistically, γ-GC increased the expression of GSH synthetase (GSS) for GSH synthesis via protein kinase C (PKC)ε-mediated activation of nuclear factor erythroid 2-related factor (Nrf2). Our findings suggest that γ-GC not only serves as a raw material but also increases the GSS expression for GSH synthesis against CIR-induced lipid peroxidation and ferroptosis. Our study strongly suggests that γ-GC has potential for treating CIR injury.
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Affiliation(s)
- Ruyi Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Jianzhen Lei
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Luyao Chen
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Yanan Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Guocui Yang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Zhimin Yin
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210046, China
- Correspondence: (Z.Y.); (L.L.); Tel./Fax: +86-25-85891305 (Z.Y.); +86-25-89682705 (L.L.)
| | - Lan Luo
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
- Correspondence: (Z.Y.); (L.L.); Tel./Fax: +86-25-85891305 (Z.Y.); +86-25-89682705 (L.L.)
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Sakuma R, Kobayashi M, Kobashi R, Onishi M, Maeda M, Kataoka Y, Imaoka S. Brain Pericytes Acquire Stemness via the Nrf2-Dependent Antioxidant System. Stem Cells 2022; 40:641-654. [PMID: 35353891 DOI: 10.1093/stmcls/sxac024] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 03/15/2022] [Indexed: 12/15/2022]
Abstract
Pericytes (PCs) are a mural support cell population elongated at intervals along the walls of capillaries. Recent studies reported that PCs are multipotent cells that are activated in response to tissue injury and contribute to the regenerative process. Using a C.B-17 mouse model of ischemic stroke, it has been proposed that normal brain pericytes (nPCs) are converted to ischemic pericytes (iPCs), some of which function as multipotent stem cells. Furthermore, oxygen-glucose deprivation (OGD) promoted mesenchymal-epithelial transition in nPCs; however, nestin was not induced under OGD conditions. Therefore, further studies are needed to elucidate the PC reprogramming phenomenon. We herein isolated nPCs from the cortex of C.B-17 mice, and compared the traits of iPCs and nPCs. The results obtained showed that nPCs and iPCs shared common pericytic markers. Furthermore, intercellular levels of reactive oxygen species and the nuclear accumulation of nuclear factor erythroid-2-related factor 2 (Nrf2), a key player in antioxidant defenses, were higher in iPCs than in nPCs. OGD/reoxygenation and a treatment with tBHQ, an Nrf2 inducer, increased nestin levels in nPCs. Moreover, epithelial marker levels, including nestin, Sox2, and CDH1 (E-cadherin) mRNAs, were elevated in Nrf2-overexpressing PCs, which formed neurosphere-like cell clusters that differentiated into Tuj1-positive neurons. The present results demonstrate that oxidative stress and Nrf2 are required for the generation of stem cells after stroke and will contribute to the development of novel therapeutic strategies for ischemic stroke.
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Affiliation(s)
- Rika Sakuma
- School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Hyogo, Japan
| | - Miku Kobayashi
- School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Hyogo, Japan
| | - Rui Kobashi
- School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Hyogo, Japan
| | - Mako Onishi
- School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Hyogo, Japan
| | - Mitsuyo Maeda
- Multi-Modal Microstructure Analysis Unit, RIKEN-JEOL Collaboration Center, RIKEN, Kobe, Hyogo, Japan.,Laboratory for Cellular Function Imaging, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Yosky Kataoka
- Multi-Modal Microstructure Analysis Unit, RIKEN-JEOL Collaboration Center, RIKEN, Kobe, Hyogo, Japan.,Laboratory for Cellular Function Imaging, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Susumu Imaoka
- School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Hyogo, Japan
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Targeting Molecular Mediators of Ferroptosis and Oxidative Stress for Neurological Disorders. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:3999083. [PMID: 35910843 PMCID: PMC9337979 DOI: 10.1155/2022/3999083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 07/05/2022] [Accepted: 07/12/2022] [Indexed: 12/15/2022]
Abstract
With the acceleration of population aging, nervous system diseases including Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), anxiety, depression, stroke, and traumatic brain injury (TBI) have become a huge burden on families and society. The mechanism of neurological disorders is complex, which also lacks effective treatment, so relevant research is required to solve these problems urgently. Given that oxidative stress-induced lipid peroxidation eventually leads to ferroptosis, both oxidative stress and ferroptosis are important mechanisms causing neurological disorders, targeting mediators of oxidative stress and ferroptosis have become a hot research direction at present. Our review provides a current view of the mechanisms underlying ferroptosis and oxidative stress participate in neurological disorders, the potential application of molecular mediators targeting ferroptosis and oxidative stress in neurological disorders. The target of molecular mediators or agents of oxidative stress and ferroptosis associated with neurological disorders, such as reactive oxygen species (ROS), nuclear factor erythroid 2–related factor-antioxidant response element (Nrf2-ARE), n-acetylcysteine (NAC), Fe2+, NADPH, and its oxidases NOX, has been described in this article. Given that oxidative stress-induced ferroptosis plays a pivotal role in neurological disorders, further research on the mechanisms of ferroptosis caused by oxidative stress will help provide new targets for the treatment of neurological disorders.
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Khoshandam A, Razavi BM, Hosseinzadeh H. Interaction of saffron and its constituents with Nrf2 signaling pathway: A review. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2022; 25:789-798. [PMID: 36033950 PMCID: PMC9392575 DOI: 10.22038/ijbms.2022.61986.13719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 06/26/2022] [Indexed: 11/09/2022]
Abstract
Saffron (Crocus sativus) is a natural compound and its constituents such as crocin, crocetin, and safranal have many pharmacological properties such as anti-oxidant, anti-inflammatory, antitumor, antigenotoxic, anti-depressant, hepatoprotective, cardioprotective, and neuroprotective. The nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway plays an important role against inflammation, oxidative stress, and carcinogenesis. In the regulation of the Nrf2 signaling pathway, kelch-like ECH-associated protein 1 (keap1) is the most studied pathway. In this review, we gathered various studies and describe the pharmacological effects of saffron and its constituents with their related mechanisms of action, particularly the Nrf2 signaling pathway. In this review, we used search engines or electronic databases including Scopus, Web of Science, and Pubmed, without time limitation. The search keywords contained saffron, "Crocus sativus", crocetin, crocin, safranal, picrocrocin, "nuclear factor erythroid 2-related factor 2", and Nrf2. Saffron and its constituents could have protective properties through various mechanisms particularly the Nrf2/HO-1/Keap1 signaling pathway in different tissues such as the liver, heart, brain, pancreas, lung, joints, colon, etc. The vast majority of studies discussed in this review indicate that saffron and its constituents could induce the Nrf2 signaling pathway leading to its anti-oxidant and therapeutic effects.
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Affiliation(s)
- Arian Khoshandam
- School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bibi Marjan Razavi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran , Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Hosseinzadeh
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran , Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran,Corresponding author: Hossein Hosseinzadeh. Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
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Chen Q, Wan J, Zhang Y, He Y, Bao Y, Yu L, Yang J. Pharmacokinetic-pharmacodynamic modeling analysis for hydroxysafflor yellow A-calycosin in compatibility in normal and cerebral ischemic rats: A comparative study. Biomed Pharmacother 2022; 150:112950. [PMID: 35427818 DOI: 10.1016/j.biopha.2022.112950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/25/2022] [Accepted: 04/08/2022] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE Astragalus and Safflower are commonly used in the treatment of stroke. Studies have shown that their two active components, hydroxysafflor yellow A (HSYA) and calycosin (CA), have protective effects on cerebral ischemia-reperfusion injury (I/R). However, the pharmacokinetic-pharmacodynamic (PK-PD) modeling study of the combination of the two components has not been reported in rats. The study aimed to perform combined PK-PD modeling of HSYA and CA in normal and cerebral ischemia model rats to explain quantitatively their time-concentration-effect relationship. METHODS To make the middle cerebral artery occlusion (MCAO) model. SD rats were randomly divided into normal treated group (NTG) (n = 6), model group (MDG) (n = 6) and model treated group (MTG) (n = 6). Plasma was collected from the mandibular vein after 0, 2, 5, 10, 15, 20, 30, 45, 60, 75, 90, 120, 180, and 240 min after intravenous administration. Rats in NTG and MTG were administered the same dose of HSYA (5 mg/kg) and CA (8 mg/kg) by tail vein injection. HPLC-VWD method was used for detection and analysis. Simultaneously, ELISA was performed to detect the levels of IL-1β and caspase-9 in rat plasma at different time points. The improvement in the above indicators was compared after administration. Lastly, after combining the pharmacokinetic parameters and pharmacodynamic indicators in vivo, DAS 3.2.6 software was used to fit the PK-PD model. RESULTS The MCAO model was successfully established. Compared to NTG, there was a significant difference (P < 0.05) in t1/2α, t1/2β, V1, V2, CL1, CL2, AUC(0-t), AUC (0-∞), and K12 of MTG for HSYA, and there was a significant difference (P < 0.05) in t1/2α, V1, CL1, AUC(0-t), AUC (0-∞), and K10 of MTG for CA. Compared to NTG, the PK parameters of t1/2α, V1, V2, CL1, and K10 were higher for HSYA in MTG, while AUC(0-t), AUC (0-∞), K12, and K21 were lower; the PK parameters of t1/2α, V1, V2, AUC(0-t), and AUC(0-∞) were higher for CA in MTG, while CL1, CL2, K10, K12, and K21 were lower. Also, the results of PD showed extremely significant differences in the levels of caspase-9 and IL-1β at the different time points in MTG (P < 0.01) compared with 0 min. The levels of caspase-9 and IL-1β in NTG rats showed little fluctuation and were relatively stable; however, their levels in MTG showed a downward trend with time. There were highly significant differences in the levels of each of the pharmacodynamic indicators at every time point between NTG and MTG (P < 0.01). CONCLUSION The PK-PD model of the combined administration of HSYA and CA was successfully established in rats, and the differences in pharmacodynamic and pharmacokinetic properties between the normal and cerebral ischemic rats were evaluated. Based on comprehensive data analysis, we found that the combination of HSYA and CA may exert protective effects against I/R injury in rats via anti-apoptotic and anti-inflammatory pathways. The study provided additional insights into the development of drugs for ischemic stroke as well as the design of appropriate dosing regimens.
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Affiliation(s)
- Qianqian Chen
- Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, PR China.
| | - Jiayang Wan
- Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, PR China.
| | - Yangyang Zhang
- Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, PR China.
| | - Yu He
- Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, PR China.
| | - Yida Bao
- Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, PR China.
| | - Li Yu
- Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, PR China.
| | - Jiehong Yang
- Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, PR China.
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Shi M, Wang J, Bi F, Bai Z. Diosmetin alleviates cerebral ischemia-reperfusion injury through Keap1-mediated Nrf2/ARE signaling pathway activation and NLRP3 inflammasome inhibition. ENVIRONMENTAL TOXICOLOGY 2022; 37:1529-1542. [PMID: 35191607 DOI: 10.1002/tox.23504] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 02/10/2022] [Accepted: 02/13/2022] [Indexed: 06/14/2023]
Abstract
Diosmetin was found to exert protective effect on renal and myocardial ischemia-reperfusion (IR) injury. This study aimed to investigate the role of diosmetin in cerebral IR (CIR) injury. PC12 neurons were exposed to oxygen-glucose deprivation/reoxygenation (OGD/R) to establish CIR injury model in vitro and then incubated with diosmetin, and we found that diosmetin alleviated OGD/R-induced viability inhibition, LDH release, apoptosis, and oxidative stress in PC12 cells. Then our results showed that diosmetin downregulated kelch like ECH-associated protein 1 (Keap1) expression, and upregulated nuclear factor E2-related factor 2 (Nrf2) expression, antioxidant response element (ARE) activity and the mRNA and protein expression of heme oxygenase 1 (HO-1) and NAD(P)H: quinone oxidoreductase 1 (NQO1). Keap1 overexpression or Nrf2 silencing both attenuated the neuroprotective effect of diosmetin on PC12 cells. Moreover, diosmetin inhibited the levels of nucleotide-binding oligomerization domain (NOD)-like receptor (NLR) pyrin domain containing 3 (NLRP3) inflammasome pathway related proteins and inflammatory cytokines interleukin (IL)-1β and IL-18. Additionally, a middle cerebral artery occlusion (MCAO) rat model was established and diosmetin was injected for treatment. Diosmetin alleviated CIR-induced neurological deficits, cerebral infarction, brain edema and histopathological damage, and neuronal apoptosis and oxidative stress in MCAO rats. In conclusion, diosmetin attenuated OGD/R-induced PC12 cell viability inhibition, apoptosis, oxidative stress and inflammation through Keap1-mediated Nrf2/ARE signaling activation and NLRP3 inflammasome inhibition, and alleviated CIR-induced neurological injury in MCAO rat model. Our study may provide a novel therapeutic strategy for CIR injury.
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Affiliation(s)
- Min Shi
- Medical School, Xi'an Peihua University, Xi'an, China
| | - Jianqiang Wang
- Department of Neurology, Generic Universal China Railway Xi'an Hospital, Xi'an, China
| | - Fangfang Bi
- Medical School, Xi'an Peihua University, Xi'an, China
| | - Zhangyong Bai
- Department of Intervention, Baoji People's Hospital, Baoji, China
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Xiao T, Qu H, Zeng Z, Li C, Wan J. Exosomes from M2-polarized macrophages relieve oxygen/glucose deprivation/normalization-induced neuronal injury by activating the Nrf2/HO-1 signaling. Arch Biochem Biophys 2022; 721:109193. [PMID: 35321825 DOI: 10.1016/j.abb.2022.109193] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 03/16/2022] [Accepted: 03/19/2022] [Indexed: 02/08/2023]
Abstract
Stroke is a life-threatening neurological disorder with limited therapeutic efficacy. Previous studies have demonstrated that macrophages play an important role in brain injury after a stroke. However, its underlying mechanism remains unclear and the role of exosomes derived from M2-polarized macrophages (M2-Exo) in ischemic stroke has not yet been reported. In this study, we established an in vitro oxygen/glucose deprivation and re-oxygen/glucose (OGD/R) model to investigate the potential role of M2-Exo in protecting HT22 neurons against ischemia-reperfusion injury. Interleukin-4 was used to induce the M2 phenotype in macrophages, following which the exosomes were isolated from the supernatant of M2-polarized macrophages and identified by western blotting, transmission electron microscopy, and nanoparticle tracking analysis. After co-incubation with M2-Exo, OGD/R-induced neuronal injury in HT22 cells was improved, accompanied by increased cell viability and decreased lactate dehydrogenase release. In addition, the increase in percentage of terminal deoxyribonucleotidyl transferase-mediated dUTP-digoxigenin nick end labeling-positive cells in OGD/R-treated HT22 cells was attenuated after incubation with M2-Exo. M2-Exo treatment also suppressed reactive oxygen species and malondialdehyde production and improved the reduction of superoxide dismutase activity. Moreover, M2-Exo treatment was found to activate the nuclear factor erythroid related factor 2 (Nrf2)/heme-oxygenase-1 (HO-1) signaling pathway in OGD/R-treated HT22 neurons. Importantly, inhibition of Nrf2 by ML385 partially reversed the protective effects of M2-Exo against OGD/R-induced oxidative damage. Taken together, these data demonstrated that M2-Exo exerted protective effects against OGD/R-induced oxidative damage in HT22 neurons, which was mediated by the activation of Nrf2/HO-1 signaling. Hence, our findings provide a promising therapeutic approach for ischemic stroke.
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Affiliation(s)
- Tao Xiao
- Department of Neurosurgery, The First Affiliated Hospital, Hengyang Medical School, University of South China
| | - Hongtao Qu
- Department of Neurosurgery, The First Affiliated Hospital, Hengyang Medical School, University of South China
| | - Zhiqing Zeng
- Department of Neurosurgery, The First Affiliated Hospital, Hengyang Medical School, University of South China
| | - Chuanghua Li
- Department of Neurosurgery, The First Affiliated Hospital, Hengyang Medical School, University of South China
| | - Juan Wan
- Department of Neurology, The First Affiliated Hospital, Hengyang Medical School, University of South China.
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The Signaling Pathways and Targets of Natural Compounds from Traditional Chinese Medicine in Treating Ischemic Stroke. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27103099. [PMID: 35630576 PMCID: PMC9148018 DOI: 10.3390/molecules27103099] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/08/2022] [Accepted: 05/10/2022] [Indexed: 11/17/2022]
Abstract
Ischemic stroke (IS) is a common neurological disorder associated with high disability rates and mortality rates. At present, recombinant tissue plasminogen activator (r-tPA) is the only US(FDA)-approved drug for IS. However, due to the narrow therapeutic window and risk of intracerebral hemorrhage, r-tPA is currently used in less than 5% of stroke patients. Natural compounds have been widely used in the treatment of IS in China and have a wide range of therapeutic effects on IS by regulating multiple targets and signaling pathways. The keywords "ischemia stroke, traditional Chinese Medicine, Chinese herbal medicine, natural compounds" were used to search the relevant literature in PubMed and other databases over the past five years. The results showed that JAK/STAT, NF-κB, MAPK, Notch, Nrf2, and PI3K/Akt are the key pathways, and SIRT1, MMP9, TLR4, HIF-α are the key targets for the natural compounds from traditional Chinese medicine in treating IS. This study aims to update and summarize the signaling pathways and targets of natural compounds in the treatment of IS, and provide a base of information for the future development of effective treatments for IS.
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Hoyle C, Green JP, Allan SM, Brough D, Lemarchand E. Itaconate and fumarate derivatives inhibit priming and activation of the canonical NLRP3 inflammasome in macrophages. Immunology 2022; 165:460-480. [PMID: 35137954 PMCID: PMC9426622 DOI: 10.1111/imm.13454] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 11/29/2021] [Accepted: 01/04/2022] [Indexed: 11/29/2022] Open
Abstract
The NLRP3 inflammasome is a multiprotein complex that regulates caspase-1 activation and subsequent interleukin (IL)-1β and IL-18 release from innate immune cells in response to infection or injury. Derivatives of the metabolites itaconate and fumarate, dimethyl itaconate (DMI), 4-octyl itaconate (4OI) and dimethyl fumarate (DMF) limit both expression and release of IL-1β following NLRP3 inflammasome activation. However, the direct effects of these metabolite derivatives on NLRP3 inflammasome responses require further investigation. Using murine bone marrow-derived macrophages, mixed glia and organotypic hippocampal slice cultures (OHSCs), we demonstrate that DMI, 4OI and DMF pretreatments inhibit pro-inflammatory cytokine production in response to lipopolysaccharide (LPS), as well as inhibit subsequent NLRP3 inflammasome activation induced by nigericin. DMI, 4OI, DMF and monomethyl fumarate (MMF), another fumarate derivative, also directly inhibited biochemical markers of NLRP3 activation in LPS-primed macrophages, mixed glia, OHSCs and human macrophages in response to nigericin and imiquimod, including ASC speck formation, caspase-1 activation, gasdermin D cleavage and IL-1β release. DMF, an approved treatment of multiple sclerosis, as well as DMI, 4OI and MMF, inhibited NLRP3 activation in macrophages in response to lysophosphatidylcholine, which is used to induce demyelination, suggesting a possible mechanism for DMF in multiple sclerosis through NLRP3 inhibition. The derivatives also reduced pro-IL-1α cleavage in response to the calcium ionophore ionomycin. Together, these findings reveal the immunometabolic regulation of both the priming and activation steps of NLRP3 activation in macrophages. Furthermore, we highlight itaconate and fumarate derivatives as potential therapeutic options in NLRP3- and IL-1α-driven diseases, including in the brain.
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Affiliation(s)
- Christopher Hoyle
- Geoffrey Jefferson Brain Research CentreThe Manchester Academic Health Science CentreNorthern Care Alliance NHS GroupUniversity of ManchesterManchesterUK
- Division of Neuroscience and Experimental PsychologySchool of Biological SciencesFaculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
- The Lydia Becker Institute of Immunology and InflammationUniversity of ManchesterManchesterUK
| | - Jack P. Green
- Geoffrey Jefferson Brain Research CentreThe Manchester Academic Health Science CentreNorthern Care Alliance NHS GroupUniversity of ManchesterManchesterUK
- Division of Neuroscience and Experimental PsychologySchool of Biological SciencesFaculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
- The Lydia Becker Institute of Immunology and InflammationUniversity of ManchesterManchesterUK
| | - Stuart M. Allan
- Geoffrey Jefferson Brain Research CentreThe Manchester Academic Health Science CentreNorthern Care Alliance NHS GroupUniversity of ManchesterManchesterUK
- Division of Neuroscience and Experimental PsychologySchool of Biological SciencesFaculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
- The Lydia Becker Institute of Immunology and InflammationUniversity of ManchesterManchesterUK
| | - David Brough
- Geoffrey Jefferson Brain Research CentreThe Manchester Academic Health Science CentreNorthern Care Alliance NHS GroupUniversity of ManchesterManchesterUK
- Division of Neuroscience and Experimental PsychologySchool of Biological SciencesFaculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
- The Lydia Becker Institute of Immunology and InflammationUniversity of ManchesterManchesterUK
| | - Eloise Lemarchand
- Division of Neuroscience and Experimental PsychologySchool of Biological SciencesFaculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
- INSERM UMR‐S U1237Physiopathology and Imaging of Neurological DisordersInstitut Blood and Brain @ Caen‐Normandie (BB@C)Normandie UniversityCaenFrance
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Xiong M, Feng Y, Huang S, Lv S, Deng Y, Li M, Wang P, Luo M, Wen H, Zhang W. Teriparatide induces angiogenesis in ischemic cerebral infarction zones of rats through AC/PKA signaling and reduces ischemia-reperfusion injury. Biomed Pharmacother 2022; 148:112728. [PMID: 35220030 DOI: 10.1016/j.biopha.2022.112728] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 02/14/2022] [Accepted: 02/15/2022] [Indexed: 11/02/2022] Open
Abstract
Teriparatide is a commonly used drug indicated for the treatment of osteoporosis in postmenopausal women. Teriparatide can also upregulate Ang-1 expression through the AC/PKA signaling pathway to promote angiogenesis. At present, promoting angiogenesis is a promising but unrealized strategy for the treatment of ischemic cerebral infarction. However, there are few studies on the application of teriparatide in the treatment of cerebral infarction. We used teriparatide to treat ischemic cerebral infarction in rats and obtained three major findings. First, teriparatide can promote angiogenesis, reduce cerebral infarct size, and increase cerebral perfusion by upregulating Ang-1 expression. Second, teriparatide can promote the expression of HO1, SOD2 and inhibit the production of pro-inflammatory cytokines IL-1β, IL-6 by upregulating Nrf2 expression. Third, we further found that teriparatide can mitigate blood-brain barrier disruption and brain edema by downregulating the expressions of MMP9, Ang-2 and AQP4. Our results indicate that teriparatide is neuroprotective through multiple mechanisms of action that include promoting angiogenesis, inhibiting oxidative stress and neuroinflammation, protecting blood-brain barrier, and reducing brain edema.
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Affiliation(s)
- Moliang Xiong
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Guangzhou 510282, China
| | - Yun Feng
- Department of Pediatrics, Hospital of the 74th Group Army of the Chinese people's Liberation Army, Guangzhou 510282, China
| | - Shujie Huang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Guangzhou 510282, China
| | - Siyuan Lv
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Guangzhou 510282, China
| | - Yuhao Deng
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Guangzhou 510282, China
| | - Min Li
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Guangzhou 510282, China
| | - Pengfei Wang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Guangzhou 510282, China
| | - Minjie Luo
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Guangzhou 510282, China
| | - Huangtao Wen
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Guangzhou 510282, China
| | - Wangming Zhang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Guangzhou 510282, China.
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Kryl'skii ED, Chupandina EE, Popova TN, Shikhaliev KS, Medvedeva SM, Verevkin AN, Popov SS, Mittova VO. 1-benzoyl-6-hydroxy-2,2,4-trimethyl-1,2-dihydroquinoline exerts a neuroprotective effect and normalises redox homeostasis in a rat model of cerebral ischemia/reperfusion. Metab Brain Dis 2022; 37:1271-1282. [PMID: 35201554 DOI: 10.1007/s11011-022-00928-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 02/07/2022] [Indexed: 10/19/2022]
Abstract
Ischemia is one of the main etiological factors of stroke and is associated with the development of energy deficiency, oxidative stress, and inflammation. An abrupt restoration of blood flow, called reperfusion, can worsen the effects of ischemia. In our study, we assessed the neuroprotective potential of 1-benzoyl-6-hydroxy-2,2,4-trimethyl-1,2-dihydroquinoline (BHDQ) in cerebral ischemia/reperfusion (CIR) in rats. Wistar rats, divided into 4 groups were used in the study: sham-operated animals; animals with CIR caused by occlusion of the common carotid arteries and subsequent removal of the occlusions; rats treated with BHDQ at a dose of 50 mg/kg in the presence of pathology; sham-operated animals treated with BHDQ. The analysis of the state of energy metabolism in the brain, the level of the S100B protein and the histological assessment of the brain tissue were carried out. The antioxidant potential of BHDQ was assessed by measuring biochemiluminescence parameters, analysing the level of 8-isoprostane, products of lipid and protein oxidation, concentration of α-tocopherol and citrate, and aconitate hydratase activity during CIR in rats. A study of the effect of BHDQ on the regulation of the enzymatic antioxidant system and the inflammatory processes was performed. We demonstrated that BHDQ has a neuroprotective effect in CIR, reducing histopathological changes in the brain, normalizing pyruvate and lactate concentrations, and the transcripts level of Hif-1α gene. The positive effect of BHDQ was probably due to its antioxidant and anti-inflammatory activity, manifested in a decrease in the parameters of the oxidative stress, decreased mRNA of proinflammatory cytokines and NF-κB factor genes. In addition, BHDQ reduced the load on antioxidant protection enzymes, contributing to a change in their activities, decreased the level of antioxidant gene transcripts and expression of Nrf2 and Foxo1 factors toward control. Thus, BHDQ exhibited a neuroprotective effect due to a decrease in the level of oxidative stress and inflammation and the normalization of redox homeostasis on CIR in rats.
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Affiliation(s)
- E D Kryl'skii
- Department of Medical Biochemistry and Microbiology, Voronezh State University, Universitetskaya sq. 1, 394018, Voronezh, Russia.
| | - E E Chupandina
- Department of Pathological Anatomy, Voronezh State Medical University named after N.N. Burdenko, Voronezh, Russia
- Research Institute of Experimental Biology and Medicine, Voronezh State Medical University named after N.N. Burdenko, Voronezh, Russia
| | - T N Popova
- Department of Medical Biochemistry and Microbiology, Voronezh State University, Universitetskaya sq. 1, 394018, Voronezh, Russia
| | - Kh S Shikhaliev
- Department of Organic Chemistry, Voronezh State University, Voronezh, Russia
| | - S M Medvedeva
- Department of Organic Chemistry, Voronezh State University, Voronezh, Russia
| | - A N Verevkin
- Department of Medical Biochemistry and Microbiology, Voronezh State University, Universitetskaya sq. 1, 394018, Voronezh, Russia
| | - S S Popov
- Department of Organization of Pharmaceutical Business, Clinical Pharmacy and Pharmacognosy, Voronezh State Medical University named after N.N. Burdenko, Voronezh, Russia
| | - V O Mittova
- Department of Clinical laboratory Diagnostics, Voronezh State Medical University named after N.N. Burdenko, Voronezh, Russia
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41
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Jurcau A, Ardelean AI. Oxidative Stress in Ischemia/Reperfusion Injuries following Acute Ischemic Stroke. Biomedicines 2022; 10:biomedicines10030574. [PMID: 35327376 PMCID: PMC8945353 DOI: 10.3390/biomedicines10030574] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/25/2022] [Accepted: 02/28/2022] [Indexed: 02/04/2023] Open
Abstract
Recanalization therapy is increasingly used in the treatment of acute ischemic stroke. However, in about one third of these patients, recanalization is followed by ischemia/reperfusion injuries, and clinically to worsening of the neurological status. Much research has focused on unraveling the involved mechanisms in order to prevent or efficiently treat these injuries. What we know so far is that oxidative stress and mitochondrial dysfunction are significantly involved in the pathogenesis of ischemia/reperfusion injury. However, despite promising results obtained in experimental research, clinical studies trying to interfere with the oxidative pathways have mostly failed. The current article discusses the main mechanisms leading to ischemia/reperfusion injuries, such as mitochondrial dysfunction, excitotoxicity, and oxidative stress, and reviews the clinical trials with antioxidant molecules highlighting recent developments and future strategies.
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Affiliation(s)
- Anamaria Jurcau
- Department of Psycho-Neurosciences and Rehabilitation, Faculty of Medicine and Pharmacy, University of Oradea, 410087 Oradea, Romania
- Department of Neurology, Clinical Municipal Hospital Oradea, Louis Pasteur Street nr 26, 410054 Oradea, Romania
- Correspondence: ; Tel.: +40-744-600-833
| | - Adriana Ioana Ardelean
- Department of Preclinical Sciences, Faculty of Medicine and Pharmacy, University of Oradea, Universitatii Street nr 1, 410087 Oradea, Romania;
- Department of Cardiology, Clinical Emergency County Hospital Oradea, Gh. Doja Street nr 65, 410169 Oradea, Romania
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42
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Fu Y, Gao J, Li Y, Yang X, Zhang Y. RETRACTED: TRIM21 deficiency confers protection from OGD/R-induced oxidative and inflammatory damage in cultured hippocampal neurons through regulation of the Keap1/Nrf2 pathway. Int Immunopharmacol 2022; 103:108414. [PMID: 34929478 DOI: 10.1016/j.intimp.2021.108414] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 11/10/2021] [Accepted: 11/25/2021] [Indexed: 02/06/2023]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). The authors have requested that this paper be retracted as they were unable to repeat some results reported in this paper under the same conditions. In Figure 1D, they found that TRIM21 siRNA-1 could not silence the expression of TIRM21. Therefore, the subsequent results were no longer reliable. The authors apologize for any inconvenience this retraction may cause for readers.
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Affiliation(s)
- Yahong Fu
- Department of Neurology, Xi'an Ninth Hospital, No. 151 East Section of South Second Ring Road, Xi'an 710054, Shaanxi Province, China
| | - Junxian Gao
- Department of Neurology, Xi'an Ninth Hospital, No. 151 East Section of South Second Ring Road, Xi'an 710054, Shaanxi Province, China
| | - Yanqing Li
- Department of Neurology, Xi'an Ninth Hospital, No. 151 East Section of South Second Ring Road, Xi'an 710054, Shaanxi Province, China
| | - Xi Yang
- Department of Neurology, Xi'an Ninth Hospital, No. 151 East Section of South Second Ring Road, Xi'an 710054, Shaanxi Province, China
| | - Yun Zhang
- Department of Neurology, Xi'an Ninth Hospital, No. 151 East Section of South Second Ring Road, Xi'an 710054, Shaanxi Province, China.
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43
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Kuang X, Chen S, Lao J, Chen Y, Jia D, Tu L, Ma L, Liao X, Zhao W, Li Q. HDAC9 in the Injury of Vascular Endothelial Cell Mediated by P38 MAPK Pathway. J Interferon Cytokine Res 2021; 41:439-449. [PMID: 34935488 DOI: 10.1089/jir.2021.0050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Ischemic stroke caused by atherosclerosis (AS) poses a serious threat to human life expectancy and quality. With the development of genome-wide association studies, the association of histone deacetylase 9 (HDAC9) expression of atheromatous plaques with ischemic stroke in large arteries has been revealed, but the molecular mechanisms behind this phenomenon have not been elucidated. In this study, we explored the effect of HDAC9 on the P38 mitogen activated protein kinase (P38 MAPK), a classic cellular inflammation-related pathway, by knocking down HDAC9 in vascular endothelial cells with short hairpin RNA (shRNA) and found that HDAC9 may mediate oxidized low density lipoprotein (ox-LDL)-induced inflammatory injury in vascular endothelial cells by regulating the phosphorylation level of P38 MAPK to lead to AS. It can be seen that HDAC9 may be a target to control the formation of atherosclerotic plaques. In follow-up experiments, it was verified that sodium valproate (SVA), as a HDAC9 inhibitor, can indeed antagonize the inflammatory damage of vascular endothelial cells, as well as SB203580, which is a P38 MAPK inhibitor. It proves that SVA may be a potential drug for the prevention and treatment of ischemic stroke.
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Affiliation(s)
- Xi Kuang
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Haikou, China
| | - Shuang Chen
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Haikou, China
| | - Jitong Lao
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Haikou, China
| | - Yongmin Chen
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Haikou, China
| | - Dandan Jia
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Haikou, China
| | - Linzhi Tu
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Haikou, China
| | - Lin Ma
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Haikou, China
| | - Xiaoping Liao
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Haikou, China
| | - Wenjie Zhao
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Haikou, China
| | - Qifu Li
- Department of Neurology, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Haikou, China
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44
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Cho B, Yoo SJ, Kim SY, Lee CH, Lee YI, Lee SR, Moon C. Second-generation non-hematopoietic erythropoietin-derived peptide for neuroprotection. Redox Biol 2021; 49:102223. [PMID: 34953452 PMCID: PMC8715119 DOI: 10.1016/j.redox.2021.102223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 12/20/2021] [Indexed: 12/25/2022] Open
Abstract
Erythropoietin (EPO) is a well-known erythropoietic cytokine having a tissue-protective effect in various tissues against hypoxic stress, including the brain. Thus, its recombinants may function as neuroprotective compounds. However, despite considerable neuroprotective effects, the EPO-based therapeutic approach has side effects, including hyper-erythropoietic and tumorigenic effects. Therefore, some modified forms and derivatives of EPO have been proposed to minimize the side effects. In this study, we generated divergently modified new peptide analogs derived from helix C of EPO, with several amino acid replacements that interact with erythropoietin receptors (EPORs). This modification resulted in unique binding potency to EPOR. Unlike recombinant EPO, among the peptides, ML1-h3 exhibited a potent neuroprotective effect against oxidative stress without additional induction of cell-proliferation, owing to a differential activating mode of EPOR signaling. Furthermore, it inhibited neuronal death and brain injury under hypoxic stress in vitro and in an in vivo ischemic brain injury model. Therefore, the divergent modification of EPO-derivatives for affinity to EPOR could provide a basis for a more advanced and optimal neuroprotective strategy. Short peptides derived from helix C of EPO have a neuroprotective effect. Divergent modification of EPO-derived peptides has a differential affinity to EPOR. ML1 and its analogs have differential cell protective and proliferative effects. ML1-h3 protects neurons by suppressing in vitro oxidative stress. ML1-h3 mitigates brain injury in the in vivo mouse ischemic model without hematopoietic effect.
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Affiliation(s)
- Bongki Cho
- Department of Brain & Cognitive Sciences, Graduate School, DGIST, Daegu, 42988, South Korea; Convergence Research Advanced Centre for Olfaction, DGIST, Daegu, 42988, South Korea; Division of Biotechnology, DGIST, Daegu, 42988, South Korea
| | - Seung-Jun Yoo
- Department of Brain & Cognitive Sciences, Graduate School, DGIST, Daegu, 42988, South Korea; Convergence Research Advanced Centre for Olfaction, DGIST, Daegu, 42988, South Korea
| | - So Yeon Kim
- Department of Brain & Cognitive Sciences, Graduate School, DGIST, Daegu, 42988, South Korea; Convergence Research Advanced Centre for Olfaction, DGIST, Daegu, 42988, South Korea
| | - Chang-Hun Lee
- Department of New Biology, DGIST, Daegu, 42988, South Korea; New Biology Research Center, DGIST, Daegu, 42988, South Korea
| | - Yun-Il Lee
- Division of Biotechnology, DGIST, Daegu, 42988, South Korea
| | - Seong-Ryong Lee
- Department of Pharmacology and ODR Center, Brain Research Institute, School of Medicine, Keimyung University, Daegu, 42601, South Korea.
| | - Cheil Moon
- Department of Brain & Cognitive Sciences, Graduate School, DGIST, Daegu, 42988, South Korea; Convergence Research Advanced Centre for Olfaction, DGIST, Daegu, 42988, South Korea.
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45
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The Effect of Sulphoraphane on Brain Glucose Uptake during Neonatal Hypoxic-Ischemic Encephalopathy in Newborn Rats. EUROPEAN PHARMACEUTICAL JOURNAL 2021. [DOI: 10.2478/afpuc-2021-0013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Neonatal hypoxic-ischemic insult (HII) is one of the leading causes of morbidity and mortality in newborns. It has long-term consequences and represents a socioeconomic burden. It is an urgent issue in current neonatology. The aim of the present pilot study was to evaluate the possible effect of sulforaphane on brain glucose uptake expressed as 18F-fluorodeoxyglucose (18F-FDG) activity at the acute, subacute, and subchronic time intervals after the experimental perinatal HII in rats. Significant protection has been observed in the hippocampus 5 weeks after the insult as represented by normalisations of interhemispheric ratio of measured 18F-FDG activity. In conclusion, positron emission tomography (PET) with 18F-FDG revealed a protective effect of SFN on glucose metabolism in the subchronic phase after HII. Further research within the field of neonatal HII in newborn rats will be necessary.
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46
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Cai SC, Yi CA, Hu XS, Tang GY, Yi LM, Li XP. Isoquercitrin Upregulates Aldolase C Through Nrf2 to Ameliorate OGD/R-Induced Damage in SH-SY5Y Cells. Neurotox Res 2021; 39:1959-1969. [PMID: 34773594 DOI: 10.1007/s12640-021-00430-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 10/09/2021] [Accepted: 10/15/2021] [Indexed: 10/19/2022]
Abstract
Isoquercitrin (ISO), an extract from Chinese traditional herb, exhibits potent neuroprotective roles in various disease models. However, its role in stroke is not fully understood. We established oxygen-glucose deprivation and reoxygenation (OGD/R) model in SH-SY5Y cell to study the roles of ISO in stroke. In the experiment, the changes of LDH level and cell viability (MTT) were analyzed. Apoptotic cells stained with anti-Annexin V antibody and propidium iodide (PI) were detected by flow cytometry. The mRNA and protein level of aldolase C (ALDOC) and nuclear factor erythroid 2-related factor (Nrf2) was determined by real-time quantitative polymerase chain reaction (qPCR) and Western blotting assay, respectively. The localization of Nrf2 was investigated by immunofluorescent assay. OGD/R reduced cell viability via inducing cell apoptosis, while ISO treatment reduced the level of apoptosis in OGD/R-treated SH-SY5Y cells ISO rescued OGD/R-treated cells. Mechanistically, the expression of Nrf2 and ALDOC was upregulated upon ISO treatment, while knockdown of ALDOC diminished the activation of autophagy and hence inhibited ISO-mediated protective activity. We further demonstrated that ISO enhanced ALDOC transcription by promoting nuclear translocation of Nrf2, and suppression of Nrf2 decreased the expression of ALDOC. Our data revealed that ISO exhibited neuroprotective activity in OGD/R model through Nrf2-ALDOC-autopagy axis and highlighted the potential application of ISO in stroke treatment.
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Affiliation(s)
- Shi-Chang Cai
- Department of Human Anatomy, School of Medicine, Hunan University of Medicine, Huaihua, 418000, Hunan Province, People's Republic of China.,School of Medicine, Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, Hunan University of Medicine, Huaihua, 418000, Hunan Province, People's Republic of China
| | - Chuan-An Yi
- Medical Morphology Experimental Center of School of Medicine, Hunan University of Medicine, Huaihua, 418000, Hunan Province, People's Republic of China
| | - Xiang-Shang Hu
- Department of Human Anatomy, School of Medicine, Hunan University of Medicine, Huaihua, 418000, Hunan Province, People's Republic of China
| | - Gen-Yun Tang
- School of Medicine, Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, Hunan University of Medicine, Huaihua, 418000, Hunan Province, People's Republic of China
| | - Li-Ming Yi
- Department of Human Anatomy, School of Medicine, Hunan University of Medicine, Huaihua, 418000, Hunan Province, People's Republic of China
| | - Xiu-Ping Li
- School of Public Health and Laboratory Medicine, Hunan University of Medicine, No.492 Jinxi South Road, Hecheng District, Huaihua, 418000, Hunan Province, People's Republic of China.
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47
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Mu X, Wang J, He H, Li Q, Yang B, Wang J, Liu H, Gao Y, Ouyang L, Sun S, Ren Q, Shi X, Hao W, Fei Q, Yang J, Li L, Vest R, Wyss-Coray T, Luo J, Zhang XD. An oligomeric semiconducting nanozyme with ultrafast electron transfers alleviates acute brain injury. SCIENCE ADVANCES 2021; 7:eabk1210. [PMID: 34757781 PMCID: PMC8580303 DOI: 10.1126/sciadv.abk1210] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Artificial enzymes have attracted wide interest in disease diagnosis and biotechnology due to high stability, easy synthesis, and cost effectiveness. Unfortunately, their catalytic rate is limited to surface electron transfer, affecting the catalytic and biological activity. Here, we report an oligomeric nanozyme (O-NZ) with ultrafast electron transfer, achieving ultrahigh catalytic activity. O-NZ shows electron transfer of 1.8 nanoseconds in internal cores and 1.2 picoseconds between core and ligand molecule, leading to ultrahigh superoxidase dismutase–like and glutathione peroxidase–like activity (comparable with natural enzyme, Michaelis constant = 0.87 millimolars). Excitingly, O-NZ can improve the 1-month survival rate of mice with acute brain trauma from 50 to 90% and promote the recovery of long-term neurocognition. Biochemical experiments show that O-NZ can decrease harmful peroxide and superoxide via in vivo catalytic chain reaction and reduce acute neuroinflammation via nuclear factor erythroid-2 related factor 2–mediated up-regulation of heme oxygenase-1 expression.
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Affiliation(s)
- Xiaoyu Mu
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Junying Wang
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin 300350, China
| | - Hua He
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China
| | - Qifeng Li
- Department of Neurosurgery and Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Bing Yang
- Department of Cellular Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Junhui Wang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Haile Liu
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin 300350, China
| | - Yalong Gao
- Department of Neurosurgery and Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Lufei Ouyang
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin 300350, China
| | - Si Sun
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin 300350, China
| | - Qinjuan Ren
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin 300350, China
| | - Xinjian Shi
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China
| | - Wenting Hao
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Qiaoman Fei
- Department of Cellular Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Jiang Yang
- School of Medicine, Sun Yat-sen University, Guangzhou 510060, China
| | - Lulin Li
- Palo Alto Veterans Institute for Research, VA Palo Alto Health Care System, Palo Alto, CA 94304, USA
| | - Ryan Vest
- Department of Chemical Engineering, School of Engineering, Stanford University, Stanford, CA 94305, USA
- Department of Neurology and Neurological Sciences, School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Tony Wyss-Coray
- Department of Neurology and Neurological Sciences, School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Jian Luo
- Palo Alto Veterans Institute for Research, VA Palo Alto Health Care System, Palo Alto, CA 94304, USA
- Department of Neurology and Neurological Sciences, School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Xiao-Dong Zhang
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
- Corresponding author.
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48
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Hypoxia Tolerant Species: The Wisdom of Nature Translated into Targets for Stroke Therapy. Int J Mol Sci 2021; 22:ijms222011131. [PMID: 34681788 PMCID: PMC8537001 DOI: 10.3390/ijms222011131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/05/2021] [Accepted: 10/12/2021] [Indexed: 12/13/2022] Open
Abstract
Human neurons rapidly die after ischemia and current therapies for stroke management are limited to restoration of blood flow to prevent further brain damage. Thrombolytics and mechanical thrombectomy are the available reperfusion treatments, but most of the patients remain untreated. Neuroprotective therapies focused on treating the pathogenic cascade of the disease have widely failed. However, many animal species demonstrate that neurons can survive the lack of oxygen for extended periods of time. Here, we reviewed the physiological and molecular pathways inherent to tolerant species that have been described to contribute to hypoxia tolerance. Among them, Foxo3 and Eif5A were reported to mediate anoxic survival in Drosophila and Caenorhabditis elegans, respectively, and those results were confirmed in experimental models of stroke. In humans however, the multiple mechanisms involved in brain cell death after a stroke causes translation difficulties to arise making necessary a timely and coordinated control of the pathological changes. We propose here that, if we were able to plagiarize such natural hypoxia tolerance through drugs combined in a pharmacological cocktail it would open new therapeutic opportunities for stroke and likely, for other hypoxic conditions.
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49
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Novel Role of miR-18a-5p and Galanin in Rat Lung Ischemia Reperfusion-Mediated Response. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6621921. [PMID: 34497682 PMCID: PMC8420977 DOI: 10.1155/2021/6621921] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 07/05/2021] [Accepted: 07/25/2021] [Indexed: 12/12/2022]
Abstract
Lung ischemia reperfusion (IR) is known to occur after lung transplantation or cardiac bypass. IR leads to tissue inflammation and damage and is also associated with increased morbidity and mortality. Various receptors are known to partake in activation of the innate immune system, but the downstream mechanism of tissue damage and inflammation is yet unknown. MicroRNAs (miRNAs) are in the forefront in regulating ischemia reperfusion injury and are involved in inflammatory response. Here, we have identified by high-throughput approach and evaluated a distinct set of miRNAs that may play a role in response to IR in rat lung tissue. The top three differentially expressed miRNAs were validated through quantitative PCRs in the IR rat lung model and an in vitro model of IR of hypoxia and reoxygenation exposed type II alveolar cells. Among the miRNAs, miR-18a-5p showed consistent downregulation in both the model systems on IR. Cellular and molecular analysis brought to light a crucial role of this miRNA in ischemia reperfusion. miR-18a-5p plays a role in IR-mediated apoptosis and ROS production and regulates the expression of neuropeptide Galanin. It also influences the nuclear localization of transcription factor: nuclear factor-erythroid 2-related factor (Nrf2) which in turn may regulate the expression of the miR-18a gene. Thus, we have not only established a rat model for lung IR and enumerated the important miRNAs involved in IR but have also extensively characterized the role of miR-18a-5p. This study will have important clinical and therapeutic implications for and during transplantation procedures.
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Xu R, He Q, Wang Y, Yang Y, Guo ZN. Therapeutic Potential of Remote Ischemic Conditioning in Vascular Cognitive Impairment. Front Cell Neurosci 2021; 15:706759. [PMID: 34413726 PMCID: PMC8370253 DOI: 10.3389/fncel.2021.706759] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 06/29/2021] [Indexed: 12/21/2022] Open
Abstract
Vascular cognitive impairment (VCI) is a heterogeneous disease caused by a variety of cerebrovascular diseases. Patients with VCI often present with slower cognitive processing speed and poor executive function, which affects their independence in daily life, thus increasing social burden. Remote ischemic conditioning (RIC) is a non-invasive and efficient intervention that triggers endogenous protective mechanisms to generate neuroprotection. Over the past decades, evidence from basic and clinical research has shown that RIC is promising for the treatment of VCI. To further our understanding of RIC and improve the management of VCI, we summarize the evidence on the therapeutic potential of RIC in relation to the risk factors and pathobiologies of VCI, including reducing the risk of recurrent stroke, decreasing high blood pressure, improving cerebral blood flow, restoring white matter integrity, protecting the neurovascular unit, attenuating oxidative stress, and inhibiting the inflammatory response.
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Affiliation(s)
- Rui Xu
- Department of Neurology, Stroke Center & Clinical Trial and Research Center for Stroke, The First Hospital of Jilin University, Changchun, China.,China National Comprehensive Stroke Center, Changchun, China.,Jilin Provincial Key Laboratory of Cerebrovascular Disease, Changchun, China
| | - Qianyan He
- Department of Neurology, Stroke Center & Clinical Trial and Research Center for Stroke, The First Hospital of Jilin University, Changchun, China.,China National Comprehensive Stroke Center, Changchun, China.,Jilin Provincial Key Laboratory of Cerebrovascular Disease, Changchun, China
| | - Yan Wang
- Department of Neurology, Stroke Center & Clinical Trial and Research Center for Stroke, The First Hospital of Jilin University, Changchun, China.,China National Comprehensive Stroke Center, Changchun, China.,Jilin Provincial Key Laboratory of Cerebrovascular Disease, Changchun, China
| | - Yi Yang
- Department of Neurology, Stroke Center & Clinical Trial and Research Center for Stroke, The First Hospital of Jilin University, Changchun, China.,China National Comprehensive Stroke Center, Changchun, China.,Jilin Provincial Key Laboratory of Cerebrovascular Disease, Changchun, China
| | - Zhen-Ni Guo
- Department of Neurology, Stroke Center & Clinical Trial and Research Center for Stroke, The First Hospital of Jilin University, Changchun, China.,China National Comprehensive Stroke Center, Changchun, China.,Jilin Provincial Key Laboratory of Cerebrovascular Disease, Changchun, China
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