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Mosalam EM, Elberri AI, Abdallah MS, Abdel-Bar HM, Zidan AAA, Batakoushy HA, Abo Mansour HE. Mechanistic Insights of Neuroprotective Efficacy of Verapamil-Loaded Carbon Quantum Dots against LPS-Induced Neurotoxicity in Rats. Int J Mol Sci 2024; 25:7790. [PMID: 39063042 PMCID: PMC11277230 DOI: 10.3390/ijms25147790] [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: 06/15/2024] [Revised: 07/13/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease that badly impacts patients and their caregivers. AD is characterized by deposition of amyloid beta (Aβ) and phosphorylated tau protein (pTau) in the brain with underlying neuroinflammation. We aimed to develop a neuroprotective paradigm by loading verapamil (VRH) into hyaluronic acid-modified carbon quantum dots (CQDs) and comparing its effectiveness with the free form in an AD-like model in rats induced by lipopolysaccharide (LPS). The experimental rats were divided into seven groups: control, LPS, CQDs, early free VRH (FVRH), late FVRH, early verapamil carbon quantum dots (VCQDs), and late VCQDs. Characterizations of VCQDs, the behavioral performance of the rats, histopathological and immunohistochemical changes, some AD hallmarks, oxidative stress biomarkers, neuro-affecting genes, and DNA fragmentation were determined. VRH was successfully loaded into CQDs, which was confirmed by the measured parameters. VRH showed enhancement in cognitive functions, disruption to the architecture of the brain, decreased Aβ and pTau, increased antioxidant capacity, modifiable expression of genes, and a decline in DNA fragmentation. The loaded therapy was superior to the free drug. Moreover, the early intervention was better than the late, confirming the implication of the detected molecular targets in the development of AD. VRH showed multifaceted mechanisms in combating LPS-induced neurotoxicity through its anti-inflammatory and antioxidant properties, thereby mitigating the hallmarks of AD. Additionally, the synthesized nanosystem approach exhibited superior neuroprotection owing to the advantages offered by CQDs. However, finding new actionable biomarkers and molecular targets is of decisive importance to improve the outcomes for patients with AD.
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Affiliation(s)
- Esraa M. Mosalam
- Biochemistry Department, Faculty of Pharmacy, Menoufia University, Shebin El-Kom 32511, Menoufia, Egypt;
| | - Aya Ibrahim Elberri
- Genetic Engineering and Molecular Biology Division, Department of Zoology, Faculty of Science, Menoufia University, Shebin El-Kom 32511, Menoufia, Egypt;
| | - Mahmoud S. Abdallah
- Clinical Pharmacy Department, Faculty of Pharmacy, University of Sadat City (USC), Sadat City 32897, Monufia, Egypt
- Department of Pharm D, Faculty of Pharmacy, Jadara University, Irbid 21110, Jordan
| | - Hend Mohamed Abdel-Bar
- Department of Pharmaceutics, Faculty of Pharmacy, University of Sadat City (USC), Sadat City 32897, Monufia, Egypt;
| | - Abdel-Aziz A. Zidan
- Zoology Department, Faculty of Science, Damanhur University, Damanhur 22511, Beheira, Egypt;
| | - Hany A. Batakoushy
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Menoufia University, Shebin El-Kom 32511, Menoufia, Egypt;
| | - Hend E. Abo Mansour
- Biochemistry Department, Faculty of Pharmacy, Menoufia University, Shebin El-Kom 32511, Menoufia, Egypt;
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Fan X, Song J, Zhang S, Lu L, Lin F, Chen Y, Li S, Jin X, Wang F. Luteolin-7-O-β-d-Glucuronide Attenuated Cerebral Ischemia/Reperfusion Injury: Involvement of the Blood-Brain Barrier. Biomedicines 2024; 12:1366. [PMID: 38927572 PMCID: PMC11201472 DOI: 10.3390/biomedicines12061366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 05/06/2024] [Accepted: 05/08/2024] [Indexed: 06/28/2024] Open
Abstract
Ischemic stroke is a common cerebrovascular disease with high mortality, high morbidity, and high disability. Cerebral ischemia/reperfusion injury seriously affects the quality of life of patients. Luteolin-7-O-β-d-glucuronide (LGU) is a major active flavonoid compound extracted from Ixeris sonchifolia (Bge.) Hance, a Chinese medicinal herb mainly used for the treatment of coronary heart disease, angina pectoris, cerebral infarction, etc. In the present study, the protective effect of LGU on cerebral ischemia/reperfusion injury was investigated in an oxygen-glucose deprivation/reoxygenation (OGD/R) neuronal model and a transient middle cerebral artery occlusion (tMCAO) rat model. In in vitro experiments, LGU was found to improve the OGD/R-induced decrease in neuronal viability effectively by the MTT assay. In in vivo experiments, neurological deficit scores, infarction volume rates, and brain water content rates were improved after a single intravenous administration of LGU. These findings suggest that LGU has significant protective effects on cerebral ischemia/reperfusion injury in vitro and in vivo. To further explore the potential mechanism of LGU on cerebral ischemia/reperfusion injury, we performed a series of tests. The results showed that a single administration of LGU decreased the content of EB and S100B and ameliorated the abnormal expression of tight junction proteins ZO-1 and occludin and metalloproteinase MMP-9 in the ischemic cerebral cortex of the tMCAO 24-h injury model. In addition, LGU also improved the tight junction structure between endothelial cells and the degree of basement membrane degradation and reduced the content of TNF-α and IL-1β in the brain tissue. Thereby, LGU attenuated cerebral ischemia/reperfusion injury by improving the permeability of the blood-brain barrier. The present study provides new insights into the therapeutic potential of LGU in cerebral ischemia.
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Affiliation(s)
- Xing Fan
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China; (X.F.); (L.L.); (F.L.); (S.L.)
| | - Jintao Song
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, China; (J.S.); (S.Z.); (Y.C.)
| | - Shuting Zhang
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, China; (J.S.); (S.Z.); (Y.C.)
| | - Lihui Lu
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China; (X.F.); (L.L.); (F.L.); (S.L.)
| | - Fang Lin
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China; (X.F.); (L.L.); (F.L.); (S.L.)
| | - Yu Chen
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, China; (J.S.); (S.Z.); (Y.C.)
| | - Shichang Li
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China; (X.F.); (L.L.); (F.L.); (S.L.)
| | - Xinxin Jin
- Experimental Teaching Center of Pharmacology, Shenyang Pharmaceutical University, Shenyang 110016, China;
| | - Fang Wang
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, China; (J.S.); (S.Z.); (Y.C.)
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Chen L, Fan B, Wang F, Song Y, Wang X, Meng Y, Chen Y, Xia Q, Sun J. Research Progress in Pharmacological Effects and Mechanisms of Angelica sinensis against Cardiovascular and Cerebrovascular Diseases. Molecules 2024; 29:2100. [PMID: 38731591 PMCID: PMC11085520 DOI: 10.3390/molecules29092100] [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: 03/20/2024] [Revised: 04/22/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024] Open
Abstract
Angelica sinensis (Oliv.) Diels (A. sinensis) is a medicinal and edible values substance, which could promote blood circulation and enrich blood. It possesses rich chemical components and nutrients, which have significant therapeutic effects on cardiovascular and cerebrovascular diseases. It is commonly used for the prevention and treatment of cardiovascular and cerebrovascular diseases in the elderly, especially in improving ischemic damage to the heart and brain, protecting vascular cells, and regulating inflammatory reactions. This article reviews the main pharmacological effects and clinical research of A. sinensis on cardiovascular and cerebrovascular diseases in recent years, explores the effect of its chemical components on cardiovascular and cerebrovascular diseases by regulating the expression of functional proteins and inhibiting inflammation, anti-apoptosis, and antioxidant mechanisms. It provides a reference for further research on A. sinensis and the development of related drugs. It provides a new reference direction for the in-depth research and application of A. sinensis in the prevention, improvement, and treatment of cardiovascular and cerebrovascular diseases.
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Affiliation(s)
- Linlin Chen
- School of Management, Liaoning University of International Business and Economics, Dalian 116052, China; (L.C.); (Y.S.); (X.W.); (Y.M.); (Y.C.)
- Risk Assessment Laboratory of Agricultural Products Processing Quality and Safety, Key Laboratory of Agricultural Products Quality and Safety Collection, Storage and Transportation Control, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (B.F.); (F.W.)
| | - Bei Fan
- Risk Assessment Laboratory of Agricultural Products Processing Quality and Safety, Key Laboratory of Agricultural Products Quality and Safety Collection, Storage and Transportation Control, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (B.F.); (F.W.)
| | - Fengzhong Wang
- Risk Assessment Laboratory of Agricultural Products Processing Quality and Safety, Key Laboratory of Agricultural Products Quality and Safety Collection, Storage and Transportation Control, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (B.F.); (F.W.)
| | - Yang Song
- School of Management, Liaoning University of International Business and Economics, Dalian 116052, China; (L.C.); (Y.S.); (X.W.); (Y.M.); (Y.C.)
| | - Xizhi Wang
- School of Management, Liaoning University of International Business and Economics, Dalian 116052, China; (L.C.); (Y.S.); (X.W.); (Y.M.); (Y.C.)
| | - Ying Meng
- School of Management, Liaoning University of International Business and Economics, Dalian 116052, China; (L.C.); (Y.S.); (X.W.); (Y.M.); (Y.C.)
| | - Yumin Chen
- School of Management, Liaoning University of International Business and Economics, Dalian 116052, China; (L.C.); (Y.S.); (X.W.); (Y.M.); (Y.C.)
| | - Qing Xia
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250013, China
| | - Jing Sun
- School of Management, Liaoning University of International Business and Economics, Dalian 116052, China; (L.C.); (Y.S.); (X.W.); (Y.M.); (Y.C.)
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Zhang Q, Liu Z, Li B, Mu L, Sheng K, Xiong Y, Cheng J, Zhou J, Xiong Z, Zhou L, Jiang L, Wu J, Cai X, Zheng Y, Du W, Li Y, Zhu Y. Platinum-Loaded Cerium Oxide Capable of Repairing Neuronal Homeostasis for Cerebral Ischemia-Reperfusion Injury Therapy. Adv Healthc Mater 2024; 13:e2303027. [PMID: 38323853 DOI: 10.1002/adhm.202303027] [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: 09/12/2023] [Revised: 01/12/2024] [Indexed: 02/08/2024]
Abstract
Effective neuroprotective agents are required to prevent neurological damage caused by reactive oxygen species (ROS) generated by cerebral ischemia-reperfusion injury (CIRI) following an acute ischemic stroke. Herein, it is aimed to develop the neuroprotective agents of cerium oxide loaded with platinum clusters engineered modifications (Ptn-CeO2). The density functional theory calculations show that Ptn-CeO2 could effectively scavenge ROS, including hydroxyl radicals (·OH) and superoxide anions (·O2 -). In addition, Ptn-CeO2 exhibits the superoxide dismutase- and catalase-like enzyme activities, which is capable of scavenging hydrogen peroxide (H2O2). The in vitro studies show that Ptn-CeO2 could adjust the restoration of the mitochondrial metabolism to ROS homeostasis, rebalance cytokines, and feature high biocompatibility. The studies in mice CIRI demonstrate that Ptn-CeO2 could also restore cytokine levels, reduce cysteine aspartate-specific protease (cleaved Caspase 3) levels, and induce the polarization of microglia to M2-type macrophages, thus inhibiting the inflammatory responses. As a result, Ptn-CeO2 inhibits the reperfusion-induced neuronal apoptosis, relieves the infarct volume, reduces the neurological severity score, and improves cognitive function. Overall, these findings suggest that the prominent neuroprotective effect of the engineered Ptn-CeO2 has a significant neuroprotective effect and provides a potential therapeutic alternative for CIRI.
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Affiliation(s)
- Qiang Zhang
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Zihao Liu
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Bo Li
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160, Pujian Road, Pudong District, Shanghai, 200127, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, No. 160, Pujian Road, Pudong District, Shanghai, 200127, China
| | - Liuhua Mu
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, China
- School of Physical Science, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kai Sheng
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Yijia Xiong
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Jiahui Cheng
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160, Pujian Road, Pudong District, Shanghai, 200127, China
| | - Jia Zhou
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Zhi Xiong
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Lingling Zhou
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Lixian Jiang
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Jianrong Wu
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Xiaojun Cai
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Yuanyi Zheng
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Wenxian Du
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Yuehua Li
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Yueqi Zhu
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
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Zhao J, Zhu R, He F, Wu M, Wu Y, Meng X, Liu X. Neuroprotective effects of galectin‑1 on cerebral ischemia/reperfusion injury by regulating oxidative stress. Exp Ther Med 2024; 27:154. [PMID: 38476925 PMCID: PMC10928996 DOI: 10.3892/etm.2024.12442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 01/19/2024] [Indexed: 03/14/2024] Open
Abstract
Oxidative stress contributes to the pathology of cerebral ischemia/reperfusion (I/R) injury. Galectin-1 has shown an anti-oxidative stress effect. The present study investigated whether this anti-oxidative stress effect can account for the neuroprotective actions of galectin-1 induced by cerebral I/R injury. A cerebral I/R injury model was created in C57Bl/6 mice by transient occlusion of the middle cerebral artery, after which the mice were treated with galectin-1 for 3 days. Infarct volumes were measured. A rotarod test and neurological deficit score assessment was performed to evaluate the neurological deficits. Oxidative stress was evaluated by measuring the levels of reactive oxygen species (ROS) and lipid peroxidation malondialdehyde (MDA), while the anti-oxidative stress status was assessed by measuring molecules such as catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidation enzyme (GSH-Px) in the ischemic cerebral hemisphere of mice. The inflammatory cytokines, including Interleukin 1 (IL-1), IL-6 and tumor necrosis factor alpha (TNF-α) were measured, and the expression of microglia was evaluated by immunohistochemistry in the ischemic cerebral hemisphere of mice. Galectin-1 treatment ameliorated neurological deficits and reduced infarct volumes in the mice model with cerebral I/R injury. Moreover, it was demonstrated that galectin-1 can significantly alleviate cerebral I/R injury in the ischemic cerebral hemisphere by decreasing the production of ROS and MDA, but increasing the production of CAT, SOD and GSH-Px. Galectin-1 treatment decreased microglia expression, and IL-1, IL-6 and TNF-α levels in the ischemic cerebral hemisphere of mice. Galectin-1 could improve the outcome of cerebral I/R injury by alleviating oxidative stress. Moreover, the neuroprotective effect of galectin-1 in cerebral ischemia could be related to its anti-oxidative stress effect.
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Affiliation(s)
- Jie Zhao
- Department of Neurology, Beijing Geriatric Hospital, Beijing 100095, P.R. China
| | - Rui Zhu
- Department of Neurology, Beijing Geriatric Hospital, Beijing 100095, P.R. China
| | - Feifei He
- Department of Neurology, Beijing Geriatric Hospital, Beijing 100095, P.R. China
| | - Miao Wu
- Department of Neurology, Beijing Geriatric Hospital, Beijing 100095, P.R. China
| | - Yufu Wu
- Department of Neurology, Beijing Geriatric Hospital, Beijing 100095, P.R. China
| | - Xiangjun Meng
- Department of Neurology, Liaoyuan City Central Hospital, Liaoyuan, Jilin 136200, P.R. China
| | - Xiaohong Liu
- Department of Neurology, Beijing Geriatric Hospital, Beijing 100095, P.R. China
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Sørensen M, Pershagen G, Thacher JD, Lanki T, Wicki B, Röösli M, Vienneau D, Cantuaria ML, Schmidt JH, Aasvang GM, Al-Kindi S, Osborne MT, Wenzel P, Sastre J, Fleming I, Schulz R, Hahad O, Kuntic M, Zielonka J, Sies H, Grune T, Frenis K, Münzel T, Daiber A. Health position paper and redox perspectives - Disease burden by transportation noise. Redox Biol 2024; 69:102995. [PMID: 38142584 PMCID: PMC10788624 DOI: 10.1016/j.redox.2023.102995] [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: 11/09/2023] [Revised: 12/07/2023] [Accepted: 12/10/2023] [Indexed: 12/26/2023] Open
Abstract
Transportation noise is a ubiquitous urban exposure. In 2018, the World Health Organization concluded that chronic exposure to road traffic noise is a risk factor for ischemic heart disease. In contrast, they concluded that the quality of evidence for a link to other diseases was very low to moderate. Since then, several studies on the impact of noise on various diseases have been published. Also, studies investigating the mechanistic pathways underlying noise-induced health effects are emerging. We review the current evidence regarding effects of noise on health and the related disease-mechanisms. Several high-quality cohort studies consistently found road traffic noise to be associated with a higher risk of ischemic heart disease, heart failure, diabetes, and all-cause mortality. Furthermore, recent studies have indicated that road traffic and railway noise may increase the risk of diseases not commonly investigated in an environmental noise context, including breast cancer, dementia, and tinnitus. The harmful effects of noise are related to activation of a physiological stress response and nighttime sleep disturbance. Oxidative stress and inflammation downstream of stress hormone signaling and dysregulated circadian rhythms are identified as major disease-relevant pathomechanistic drivers. We discuss the role of reactive oxygen species and present results from antioxidant interventions. Lastly, we provide an overview of oxidative stress markers and adverse redox processes reported for noise-exposed animals and humans. This position paper summarizes all available epidemiological, clinical, and preclinical evidence of transportation noise as an important environmental risk factor for public health and discusses its implications on the population level.
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Affiliation(s)
- Mette Sørensen
- Work, Environment and Cancer, Danish Cancer Institute, Copenhagen, Denmark; Department of Natural Science and Environment, Roskilde University, Denmark.
| | - Göran Pershagen
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Jesse Daniel Thacher
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Timo Lanki
- Department of Health Security, Finnish Institute for Health and Welfare, Kuopio, Finland; School of Medicine, University of Eastern Finland, Kuopio, Finland; Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
| | - Benedikt Wicki
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Allschwil, Switzerland; University of Basel, Basel, Switzerland
| | - Martin Röösli
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Allschwil, Switzerland; University of Basel, Basel, Switzerland
| | - Danielle Vienneau
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Allschwil, Switzerland; University of Basel, Basel, Switzerland
| | - Manuella Lech Cantuaria
- Work, Environment and Cancer, Danish Cancer Institute, Copenhagen, Denmark; Research Unit for ORL - Head & Neck Surgery and Audiology, Odense University Hospital & University of Southern Denmark, Odense, Denmark
| | - Jesper Hvass Schmidt
- Research Unit for ORL - Head & Neck Surgery and Audiology, Odense University Hospital & University of Southern Denmark, Odense, Denmark
| | - Gunn Marit Aasvang
- Department of Air Quality and Noise, Norwegian Institute of Public Health, Oslo, Norway
| | - Sadeer Al-Kindi
- Department of Medicine, University Hospitals, Harrington Heart & Vascular Institute, Case Western Reserve University, 11100 Euclid Ave, Cleveland, OH, 44106, USA
| | - Michael T Osborne
- Cardiovascular Imaging Research Center, Massachusetts General Hospital, Boston, MA, USA; Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Philip Wenzel
- Department of Cardiology, Cardiology I, University Medical Center Mainz, Mainz, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany; Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
| | - Juan Sastre
- Department of Physiology, Faculty of Pharmacy, University of Valencia, Spain
| | - Ingrid Fleming
- Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, Frankfurt Am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner Site RheinMain, Frankfurt, Germany
| | - Rainer Schulz
- Institute of Physiology, Faculty of Medicine, Justus-Liebig University, Gießen, 35392, Gießen, Germany
| | - Omar Hahad
- Department of Cardiology, Cardiology I, University Medical Center Mainz, Mainz, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
| | - Marin Kuntic
- Department of Cardiology, Cardiology I, University Medical Center Mainz, Mainz, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
| | - Jacek Zielonka
- Department of Biophysics, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Helmut Sies
- Institute for Biochemistry and Molecular Biology I, Faculty of Medicine, Heinrich Heine University Düsseldorf, Düsseldorf, Germany; Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Tilman Grune
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany; DZHK (German Center for Cardiovascular Research), Partner Site Berlin, Berlin, Germany; German Center for Diabetes Research (DZD), München-Neuherberg, Germany
| | - Katie Frenis
- Hematology/Oncology, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA; Stem Cell Program, Boston Children's Hospital, Boston, MA, USA
| | - Thomas Münzel
- Department of Cardiology, Cardiology I, University Medical Center Mainz, Mainz, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany; Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
| | - Andreas Daiber
- Department of Cardiology, Cardiology I, University Medical Center Mainz, Mainz, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany; Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany.
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Wang G, Li Z, Lin P, Zhang H, Wang Y, Zhang T, Wang H, Li H, Lin L, Zhao Y, Jia L, Chen Y, Ji H, Zhao W, Fu Z, Zhong Z. Knockdown of Smox protects the integrity of the blood-brain barrier through antioxidant effect and Nrf2 pathway activation in stroke. Int Immunopharmacol 2024; 126:111183. [PMID: 37984250 DOI: 10.1016/j.intimp.2023.111183] [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: 07/14/2023] [Revised: 10/23/2023] [Accepted: 11/01/2023] [Indexed: 11/22/2023]
Abstract
Once an ischemic stroke occurs, reactive oxygen species (ROS) and oxidative stress degrade the tight connections between cerebral endothelial cells resulting in their damage. The expression of antioxidant genes may be enhanced, and ROS formation may be reduced following Nrf2 activation, which is associated with protection against ischemic stroke. Overexpression of spermine oxidase (Smox) in the neocortex led to increased H2O2 production. However, how Smox impacts the regulation of the blood-brain barrier (BBB) through antioxidants has not been examined yet. We conducted experiments both in the cell level and in the transient middle cerebral artery occlusion (tMCAO) model to evaluate the effect of Smox siRNA lentivirus (si-Smox) knockdown on BBB protection against ischemic stroke. Mice treated with si-Smox showed remarkably decreased BBB breakdown and reduced endothelial inflammation following stroke. The treatment with si-Smox significantly elevated the Bcl-2 to Bax ratio and decreased the production of cleaved caspase-3 in the tMCAO model. Further investigation revealed that the neuroprotective effect was the result of the antioxidant properties of si-Smox, which reduced oxidative stress and enhanced CD31+ cells in the peri-infarct cortical areas. Of significance, si-Smox activated Nrf2 in both bEnd.3 cells and tMCAO animals, and blocking Nrf2 with brusatol diminished the protective effects of si-Smox. The study findings suggest that si-Smox exerts neuroprotective effects and promotes angiogenesis by activating the Nrf2 pathway, thus decreasing oxidative stress and apoptosis caused by tMCAO. As a result, si-Smox may hold potential as a therapeutic candidate for preserving BBB integrity while treating ischemic stroke.
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Affiliation(s)
- Guangtian Wang
- Teaching Center of Pathogenic Biology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Zhihui Li
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Peng Lin
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Huishu Zhang
- Teaching Center of Biotechnology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Yanyan Wang
- Teaching Center of Morphology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Tongshuai Zhang
- Department of Neurobiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Hui Wang
- Teaching Center of Pathogenic Biology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Heming Li
- Teaching Center of Pathogenic Biology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Lexun Lin
- Teaching Center of Pathogenic Biology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Yuehui Zhao
- Teaching Center of Pathogenic Biology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Lina Jia
- Teaching Center of Pathogenic Biology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Yang Chen
- Teaching Center of Pathogenic Biology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Hong Ji
- Teaching Center of Pathogenic Biology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Wenran Zhao
- Department of Cell Biology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China
| | - Zhongqiu Fu
- Department of Neonatology, Zhuhai Women and Children's Hospital, Zhuhai, Guangdong 519000, China.
| | - Zhaohua Zhong
- Teaching Center of Pathogenic Biology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang 150081, China.
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8
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Azami S, Forouzanfar F. Potential role of Nigella Sativa and its Constituent (Thymoquinone) in Ischemic Stroke. Curr Mol Med 2024; 24:327-334. [PMID: 37038292 DOI: 10.2174/1566524023666230410101724] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 04/12/2023]
Abstract
Ischemic stroke is one of the major causes of global mortality, which puts great demands on health systems and social welfare. Ischemic stroke is a complex pathological process involving a series of mechanisms such as ROS accumulation, Ca2+ overload, inflammation, and apoptosis. The lack of effective and widely applicable pharmacological treatments for ischemic stroke patients has led scientists to find new treatments. The use of herbal medicine, as an alternative or complementary therapy, is increasing worldwide. For centuries, our ancestors had known the remedial nature of Nigella sativa (Family Ranunculaceae) and used it in various ways, either as medicine or as food. Nowadays, N. sativa is generally utilized as a therapeutic plant all over the world. Most of the therapeutic properties of this plant are attributed to the presence of thymoquinone which is the major biological component of the essential oil. The present review describes the pharmacotherapeutic potential of N. sativa in ischemic stroke that has been carried out by various researchers. Existing literature highlights the protective effects of N. sativa as well as thymoquinone in ischemia stroke via different mechanisms including anti-oxidative stress, anti-inflammation, anti-apoptosis, neuroprotective, and vascular protective effects. These properties make N. sativa and thymoquinone promising candidates for developing potential agents for the prevention and treatment of ischemic stroke.
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Affiliation(s)
- Shakiba Azami
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Forouzanfar
- Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Neuroscience, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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9
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Abdel-Reheim MA, Nomier Y, Zaki MB, Abulsoud AI, Mohammed OA, Rashad AA, Oraby MA, Elballal MS, Tabaa MME, Elazazy O, Abd-Elmawla MA, El-Dakroury WA, Abdel Mageed SS, Abdelmaksoud NM, Elrebehy MA, Helal GK, Doghish AS. Unveiling the regulatory role of miRNAs in stroke pathophysiology and diagnosis. Pathol Res Pract 2024; 253:155085. [PMID: 38183822 DOI: 10.1016/j.prp.2023.155085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 12/28/2023] [Accepted: 12/30/2023] [Indexed: 01/08/2024]
Abstract
Stroke, a major global cause of mortality, leads to a range of problems for those who survive. Besides its brutal events, stroke also tends to have a characteristic of recurrence, making it a complex disease involving intricate regulatory networks. One of the major cellular regulators is the non-coding RNAs (ncRNA), specifically microRNAs (miRNAs), thus the possible functions of miRNAs in the pathogenesis of stroke are discussed as well as the possibility of using miRNA-based therapeutic approaches. Firstly, the molecular mechanisms by which miRNAs regulate vital physiological processes, including synaptic plasticity, oxidative stress, apoptosis, and the integrity of the blood-brain barrier (BBB) are reviewed. The miRNA indirectly impacts stroke outcomes by regulating BBB function and angiogenesis through the targeting of transcription factors and angiogenic factors. In addition, the tendency for some miRNAs to be upregulated in response to hypoxia, which is a prevalent phenomenon in stroke and various neurological disorders, highlights the possibility that it controls hypoxia-inducible factor (HIF) signaling and angiogenesis, thereby influencing the integrity of the BBB as examples of the discussed mechanisms. Furthermore, this review explores the potential therapeutic targets that miRNAs may offer for stroke recovery and highlights their promising capacity to alleviate post-stroke complications. This review provides researchers and clinicians with valuable resources since it attempts to decipher the complex network of miRNA-mediated mechanisms in stroke. Additionally, the review addresses the interplay between miRNAs and stroke risk factors as well as clinical applications of miRNAs as diagnostic and prognostic markers.
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Affiliation(s)
- Mustafa Ahmed Abdel-Reheim
- Department of Pharmaceutical Sciences, College of Pharmacy, Shaqra University, Shaqra 11961, Saudi Arabia; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni Suef 62521, Egypt.
| | - Yousra Nomier
- Department of Pharmacology and Clinical Pharmacy, College of Medicine and health sciences, Sultan Qaboos University, Muscat, Oman
| | - Mohamed Bakr Zaki
- Biochemistry, Department of Biochemistry, Faculty of Pharmacy, University of Sadat City, Menoufia 32897, Egypt
| | - Ahmed I Abulsoud
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City 11231, Cairo, Egypt; Biochemistry Department, Faculty of Pharmacy, Heliopolis University, Cairo 11785, Egypt
| | - Osama A Mohammed
- Department of Pharmacology, College of Medicine, University of Bisha, Bisha 61922, Saudi Arabia
| | - Ahmed A Rashad
- Department of Clinical Pharmacy and Pharmacy Practice, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Mamdouh A Oraby
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Mohammed S Elballal
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Manar Mohammed El Tabaa
- Pharmacology & Environmental Toxicology, Environmental Studies & Research Institute (ESRI), University of Sadat City, Sadat City 32897, Menoufia, Egypt
| | - Ola Elazazy
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Mai A Abd-Elmawla
- Biochemistry, Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Walaa A El-Dakroury
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Sherif S Abdel Mageed
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | | | - Mahmoud A Elrebehy
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Gouda Kamel Helal
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Cairo 11231, Egypt; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Heliopolis University, Cairo 11785, Egypt
| | - Ahmed S Doghish
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt; Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City 11231, Cairo, Egypt.
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10
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Hassan FE, Aboulhoda BE, Ali IH, Elwi HM, Matter LM, Abdallah HA, Khalifa MM, Selmy A, Alghamdi MA, Morsy SA, Al Dreny BA. Evaluating the protective role of trimetazidine versus nano-trimetazidine in amelioration of bilateral renal ischemia/reperfusion induced neuro-degeneration: Implications of ERK1/2, JNK and Galectin-3 /NF-κB/TNF-α/HMGB-1 signaling. Tissue Cell 2023; 85:102241. [PMID: 37865040 DOI: 10.1016/j.tice.2023.102241] [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: 08/07/2023] [Revised: 09/24/2023] [Accepted: 10/13/2023] [Indexed: 10/23/2023]
Abstract
BACKGROUND Renal ischemia/reperfusion (I/R) is a primary culprit of acute kidney injury. Neurodegeneration can result from I/R, but the mechanisms are still challenging. We studied the implications of bilateral renal I/R on brain and potential involvement of the oxidative stress (OS) driven extracellular signal-regulated kinase1/2, c-Jun N-terminal kinase (ERK1/2, JNK) and Galectin-3 (Gal-3)/nuclear factor Kappa B (NF-қB)/tumor necrosis factor-alpha (TNF-α), high mobility group box-1 (HMGB-1), and caspase-3 paths upregulation. We tested the impact of Nano-trimetazidine (Nano-TMZ) on these pathways being a target of its neuroprotective effects. METHODS Study groups; Sham, I/R, TMZ+I/R, and Nano-TMZ+I/R. Kidney functions, cognition, hippocampal OS markers, Gal-3, NF-қB, p65 and HMGB-1 gene expression, TNF-α level, t-JNK/p-JNK and t-ERK/p-ERK proteins, caspase-3, glial fibrillary acidic protein (GFAP) and ionized calcium binding protein-1 (Iba-1) were assessed. RESULTS Nano-TMZ averted renal I/R-induced hippocampal impairment by virtue of its anti: oxidative, inflammatory, and apoptotic properties. CONCLUSION Nano-TMZ is more than anti-ischemic.
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Affiliation(s)
- Fatma E Hassan
- Medical Physiology Department, Kasr Alainy, Faculty of Medicine, Cairo University, Giza 11562, Egypt; General Medicine Practice Program, Department of Physiology, Batterjee Medical College, Jeddah 21442, Saudi Arabia
| | - Basma Emad Aboulhoda
- Anatomy and Embryology Department, Faculty of Medicine, Cairo University, Egypt.
| | - Isra H Ali
- Department of Pharmaceutics, Faculty of Pharmacy, University of Sadat City, P.O. Box 32897, Sadat City, Egypt; Nanomedicine Laboratory, Faculty of Pharmacy, University of Sadat City, P.O. Box 32897, Sadat City, Egypt
| | - Heba M Elwi
- Medical Biochemistry and Molecular Biology, Faculty of Medicine, Cairo University, Egypt
| | - Lamiaa M Matter
- Medical pharmacology, Kasr Alainy, Faculty of Medicine, Cairo University, Egypt
| | - Hend Ahmed Abdallah
- Anatomy and Embryology Department, Faculty of Medicine, Cairo University, Egypt
| | - Mohamed Mansour Khalifa
- Medical Physiology Department, Kasr Alainy, Faculty of Medicine, Cairo University, Giza 11562, Egypt; Department of Human Physiology, College of Medicine, King Saud University, Saudi Arabia
| | - Asmaa Selmy
- Medical Physiology Department, Kasr Alainy, Faculty of Medicine, Cairo University, Giza 11562, Egypt
| | - Mansour A Alghamdi
- Department of Anatomy, College of Medicine, King Khalid University, Abha 62529, Saudi Arabia; Genomics and Personalized Medicine Unit, College of Medicine, King Khalid University, Abha 62529, Saudi Arabia
| | - Suzan Awad Morsy
- Fakeeh College For Medical Sciences, Jeddah, Saudi Arabia; Faculty of Medicine, Alexandria University, Egypt
| | - Basant A Al Dreny
- Medical Physiology Department, Kasr Alainy, Faculty of Medicine, Cairo University, Giza 11562, Egypt
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11
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Roy R, Wilcox J, Webb AJ, O’Gallagher K. Dysfunctional and Dysregulated Nitric Oxide Synthases in Cardiovascular Disease: Mechanisms and Therapeutic Potential. Int J Mol Sci 2023; 24:15200. [PMID: 37894881 PMCID: PMC10607291 DOI: 10.3390/ijms242015200] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/11/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
Nitric oxide (NO) plays an important and diverse signalling role in the cardiovascular system, contributing to the regulation of vascular tone, endothelial function, myocardial function, haemostasis, and thrombosis, amongst many other roles. NO is synthesised through the nitric oxide synthase (NOS)-dependent L-arginine-NO pathway, as well as the nitrate-nitrite-NO pathway. The three isoforms of NOS, namely neuronal (NOS1), inducible (NOS2), and endothelial (NOS3), have different localisation and functions in the human body, and are consequently thought to have differing pathophysiological roles. Furthermore, as we continue to develop a deepened understanding of the different roles of NOS isoforms in disease, the possibility of therapeutically modulating NOS activity has emerged. Indeed, impaired (or dysfunctional), as well as overactive (or dysregulated) NOS activity are attractive therapeutic targets in cardiovascular disease. This review aims to describe recent advances in elucidating the physiological role of NOS isoforms within the cardiovascular system, as well as mechanisms of dysfunctional and dysregulated NOS in cardiovascular disease. We then discuss the modulation of NO and NOS activity as a target in the development of novel cardiovascular therapeutics.
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Affiliation(s)
- Roman Roy
- Cardiovascular Department, King’s College Hospital NHS Foundation Trust, London SE5 9RS, UK;
| | - Joshua Wilcox
- Cardiovascular Department, Guy’s and St. Thomas’ NHS Foundation Trust, London SE1 7EH, UK;
| | - Andrew J. Webb
- Department of Clinical Pharmacology, British Heart Foundation Centre, School of Cardiovascular and Metabolic Medicine and Sciences, King’s College London, London SE1 7EH, UK;
| | - Kevin O’Gallagher
- Cardiovascular Department, King’s College Hospital NHS Foundation Trust, London SE5 9RS, UK;
- British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King’s College London, London SE5 9NU, UK
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12
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Baskaran K, Johnson JT, Prem PN, Ravindran S, Kurian GA. Evaluation of prophylactic efficacy of sodium thiosulfate in combating I/R injury in rat brain: exploring its efficiency further in vascular calcified brain slice model. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2023; 396:2587-2598. [PMID: 37058187 DOI: 10.1007/s00210-023-02481-x] [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: 11/25/2022] [Accepted: 03/30/2023] [Indexed: 04/15/2023]
Abstract
Cerebral ischemia reperfusion injury (CIR) is one of the clinical manifestations encountered during the management of stroke. High prevalence of intracranial arterial calcification is reported in stroke patients. However, the impact of vascular calcification (VC) in the outcome of CIR and the efficacy of mechanical preconditioning (IPC) and pharmacological conditioning with sodium thiosulphate (STS) in ameliorating IR remains unclear. Two experimental models namely carotid artery occlusion (n = 36) and brain slice models (n = 18) were used to evaluate the efficacy of STS in male Wistar rats. IR was inflicted in rat by occluding carotid artery for 30 min followed by 24-h reperfusion after STS (100 mg/kg) administration. Brain slice model was used to reconfirm the results to account blood brain barrier permeability. Further, brain slice tissue was utilised to evaluate the efficacy of STS in VC rat brain by measuring the histological alterations and biochemical parameters. Pre-treatment of STS prior to CIR in intact animal significantly reduced the IR-associated histopathological alterations in brain, declined oxidative stress and improved the mitochondrial function found to be similar to IPC. Brain slice model data also confirmed the neuroprotective effect of STS similar to IPC in IR challenged tissue slice. Higher tissue injury was noted in VC brain IR tissue than normal IR tissue. Therapeutic efficacy of STS was evident in VC rat brain tissues and normal tissues subjected to IR. On the other hand, IPC-mediated protection was noted only in IR normal and adenine-induced VC brain tissues not in high-fat diet (HFD) induced VC brain tissues. Based on the results, we concluded that similar to IPC, STS was effective in attenuating IR injury in CIR rat brain. Vascular calcification adversely affected the recovery protocol of brain tissues from ischemic insult. STS was found to be an effective agent in ameliorating the IR injury in both adenine and HFD induced vascular calcified rat brain, but IPC-mediated neuroprotection was absent in HFD-induced VC brain tissues.
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Affiliation(s)
- Keerthana Baskaran
- Vascular Biology Lab, SASTRA Deemed University, 117, Anusandhan Kendra, TirumalaisamudramThanjavur, 613401, Tamil Nadu, India
| | - Jefri Thimoathi Johnson
- Vascular Biology Lab, SASTRA Deemed University, 117, Anusandhan Kendra, TirumalaisamudramThanjavur, 613401, Tamil Nadu, India
| | - Priyanka N Prem
- Vascular Biology Lab, SASTRA Deemed University, 117, Anusandhan Kendra, TirumalaisamudramThanjavur, 613401, Tamil Nadu, India
- School of Chemical and Biotechnology, SASTRA Deemed University, TirumalaisamudramThanjavur, 613401, Tamil Nadu, India
| | - Sriram Ravindran
- Vascular Biology Lab, SASTRA Deemed University, 117, Anusandhan Kendra, TirumalaisamudramThanjavur, 613401, Tamil Nadu, India
| | - Gino A Kurian
- Vascular Biology Lab, SASTRA Deemed University, 117, Anusandhan Kendra, TirumalaisamudramThanjavur, 613401, Tamil Nadu, India.
- School of Chemical and Biotechnology, SASTRA Deemed University, TirumalaisamudramThanjavur, 613401, Tamil Nadu, India.
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13
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Zhuang F, Shi X, Qiao S, Liu B, Wang Z, Huo H, Liang F, Shen L, Zhu L, He B, Wang H. Allicin promotes functional recovery in ischemic stroke via glutathione peroxidase-1 activation of Src-Akt-Erk. Cell Death Discov 2023; 9:335. [PMID: 37673878 PMCID: PMC10482956 DOI: 10.1038/s41420-023-01633-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 08/10/2023] [Accepted: 08/29/2023] [Indexed: 09/08/2023] Open
Abstract
Allicin exhibits various pharmacological activities and has been suggested to be beneficial in the treatment of stroke. However, the underlying mechanisms are largely unknown. Here, we confirmed that allicin protected the brain from cerebral injury, which could be ascribed to its anti‑apoptotic and anti‑inflammatory effects, as well as the regulation of lipid metabolism, using proteomics and metabolomics analysis. Our results suggested that allicin could significantly ameliorate behavioral characteristics, cerebral infarct area, cell apoptosis, inflammatory factors, and lipid metabolic-related factors (arachidonic acid, 15-hydroperoxy-eicosatetraenoic acid (15S-HPETE), palmitoylcarnitine, and acylcarnitine) by recalibrating astrocyte homeostasis in mice with photothrombotic stroke (PT). In astrocytes, allicin significantly increased glutathione peroxidase 1 (GPX1) levels and inhibited the arachidonic acid-related pathway, which was also observed in the brains of mice with PT. Allicin was proven to inhibit hypoxia-induced astrocyte apoptosis by increasing GPX1 expression, activating proto-oncogene tyrosine-protein kinase Src (Src)- protein kinase B (AKT)-extracellular signal-regulated kinase (ERK) phosphorylation, and decreasing lipid peroxidation. Thus, we concluded that allicin significantly prevented and ameliorated ischemic stroke by increasing GPX1 levels to complete the complex physiological process.
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Affiliation(s)
- Fei Zhuang
- Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Xin Shi
- Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Sen Qiao
- Northwest Women's and Children's Hospital, Xi'an, 710003, China
| | - Bin Liu
- Graduate School, Bengbu Medical College, Anhui, 233000, China
| | - Zhimei Wang
- School of Medicine, Southeast University, Nanjing, 210009, China
| | - Huanhuan Huo
- Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Feng Liang
- Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Linghong Shen
- Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Lijuan Zhu
- School of Medicine, Southeast University, Nanjing, 210009, China
| | - Ben He
- Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200030, China.
| | - Hongmei Wang
- School of Medicine, Southeast University, Nanjing, 210009, China.
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14
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Xiong S, Xiao H, Sun M, Liu Y, Gao L, Xu K, Liang H, Jiang N, Lin Y, Chang L, Wu H, Zhu D, Luo C. Glutamate-releasing BEST1 channel is a new target for neuroprotection against ischemic stroke with wide time window. Acta Pharm Sin B 2023; 13:3008-3026. [PMID: 37521872 PMCID: PMC10372917 DOI: 10.1016/j.apsb.2023.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 01/13/2023] [Accepted: 04/03/2023] [Indexed: 08/01/2023] Open
Abstract
Many efforts have been made to understand excitotoxicity and develop neuroprotectants for the therapy of ischemic stroke. The narrow treatment time window is still to be solved. Given that the ischemic core expanded over days, treatment with an extended time window is anticipated. Bestrophin 1 (BEST1) belongs to a bestrophin family of calcium-activated chloride channels. We revealed an increase in neuronal BEST1 expression and function within the peri-infarct from 8 to 48 h after ischemic stroke in mice. Interfering the protein expression or inhibiting the channel function of BEST1 by genetic manipulation displayed neuroprotective effects and improved motor functional deficits. Using electrophysiological recordings, we demonstrated that extrasynaptic glutamate release through BEST1 channel resulted in delayed excitotoxicity. Finally, we confirmed the therapeutic efficacy of pharmacological inhibition of BEST1 during 6-72 h post-ischemia in rodents. This delayed treatment prevented the expansion of infarct volume and the exacerbation of neurological functions. Our study identifies the glutamate-releasing BEST1 channel as a potential therapeutic target against ischemic stroke with a wide time window.
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Affiliation(s)
- Shuai Xiong
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Hui Xiao
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Meng Sun
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Yunjie Liu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Ling Gao
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Ke Xu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Haiying Liang
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Nan Jiang
- Department of Medicinal Chemistry, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Yuhui Lin
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Lei Chang
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Haiyin Wu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
- Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing 211166, China
| | - Dongya Zhu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
- Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing 211166, China
| | - Chunxia Luo
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
- Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing 211166, China
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15
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Gao J, Liu J, Li Y, Liu J, Wang H, Chai M, Dong Y, Zhang Z, Su G, Wang M. Targeting p53 for neuroinflammation: New therapeutic strategies in ischemic stroke. J Neurosci Res 2023. [PMID: 37156641 DOI: 10.1002/jnr.25200] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 04/10/2023] [Accepted: 04/21/2023] [Indexed: 05/10/2023]
Abstract
Ischemic stroke (IS) is characterized by high incidence, high recurrence, and high mortality and places a heavy burden on society and families. The pathological mechanisms of IS are complex, among which secondary neurological impairment mediated by neuroinflammation is considered to be the main factor in cerebral ischemic injury. At present, there is still a lack of specific therapies to treat neuroinflammation. The tumor suppressor protein p53 has long been regarded as a key substance in the regulation of the cell cycle and apoptosis in the past. Recently, studies have found that p53 also plays an important role in neuroinflammatory diseases, such as IS. Therefore, p53 may be a crucial target for the regulation of the neuroinflammatory response. Here, we provide a comprehensive review of the potential of targeting p53 in the treatment of neuroinflammation after IS. We describe the function of p53, the major immune cells involved in neuroinflammation, and the role of p53 in inflammatory responses mediated by these cells. Finally, we summarize the therapeutic strategies of targeting p53 in regulating the neuroinflammatory response after IS to provide new directions and ideas for the treatment of ischemic brain injury.
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Affiliation(s)
- Juan Gao
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, China
| | - Jifei Liu
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, China
| | - Yonghong Li
- NHC Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial Hospital, Lanzhou, China
| | - Junxi Liu
- Chinese Academy of Sciences Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China
| | - He Wang
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, China
| | - Miao Chai
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, China
| | - Ying Dong
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, China
| | - Zhenchang Zhang
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, China
| | - Gang Su
- Institute of Genetics, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Manxia Wang
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, China
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16
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Zhao P, Lu Y, Wang Z. Naringenin attenuates cerebral ischemia/reperfusion injury by inhibiting oxidative stress and inflammatory response via the activation of SIRT1/FOXO1 signaling pathway in vitro. Acta Cir Bras 2023; 38:e380823. [PMID: 37132753 PMCID: PMC10158850 DOI: 10.1590/acb380823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 01/06/2023] [Indexed: 05/04/2023] Open
Abstract
PURPOSE To explore the protection of naringenin against oxygen-glucose deprivation/reperfusion (OGD/R)-induced HT22 cell injury, a cell model of cerebral ischemia/reperfusion (I/R) injury in vitro, focusing on SIRT1/FOXO1 signaling pathway. METHODS Cytotoxicity, apoptosis, reactive oxygen species (ROS) generation, malondialdehyde (MDA) content, 4-hydroxynonenoic acid (4-HNE) level, superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and catalase (CAT) activities were measured by commercial kits. Inflammatory cytokines levels were determined by enzyme-linked immunosorbent assay (ELISA). The protein expressions were monitored by Western blot analysis. RESULTS Naringenin significantly ameliorated OGD/R-induced cytotoxicity and apoptosis in HT22 cells. Meanwhile, naringenin promoted SIRT1 and FOXO1 protein expressions in OGD/R-subjected HT22 cells. In addition, naringenin attenuated OGD/R-induced cytotoxicity, apoptosis, oxidative stress (the increased ROS, MDA and 4-HNE levels, and the decreased SOD, GSH-Px and CAT activities) and inflammatory response (the increased tumor necrosis factor-α, interleukin [IL]-1β, and IL-6 levels and the decreased IL-10 level), which were blocked by the inhibition of the SIRT1/FOXO1 signaling pathway induced by SIRT1-siRNA transfection. CONCLUSIONS Naringenin protected HT22 cells against OGD/R injury depending on its antioxidant and anti-inflammatory activities via promoting the SIRT1/FOXO1 signaling pathway.
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Affiliation(s)
- Peng Zhao
- Tianjin First Central Hospital - Department of Neurology - Tianjin, China
| | - Yi Lu
- Tianjin First Central Hospital - Department of Neurology - Tianjin, China
| | - Zhiyun Wang
- Tianjin First Central Hospital - Department of Neurology - Tianjin, China
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17
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Khodavysi M, Kheiripour N, Ghasemi H, Soleimani-Asl S, Jouzdani AF, Sabahi M, Ganji Z, Azizi Z, Ranjbar A. How can nanomicelle-curcumin modulate aluminum phosphide-induced neurotoxicity?: Role of SIRT1/FOXO3 signaling pathway. AIMS Neurosci 2023; 10:56-74. [PMID: 37077959 PMCID: PMC10106336 DOI: 10.3934/neuroscience.2023005] [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: 11/14/2022] [Revised: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 04/21/2023] Open
Abstract
Aluminum phosphide (ALP) is among the most significant causes of brain toxicity and death in many countries. Curcumin (CUR), a major turmeric component, is a potent protective agent against many diseases, including brain toxicity. This study aimed to examine the probable protection potential of nanomicelle curcumin (nanomicelle-CUR) and its underlying mechanism in a rat model of ALP-induced brain toxicity. A total of 36 Wistar rats were randomly divided into six groups (n = 6) and exposed to ALP (2 mg/kg/day, orally) + CUR or nanomicelle-CUR (100 mg/kg/day, orally) for 7 days. Then, they were anesthetized, and brain tissue samples were dissected to evaluate histopathological alterations, oxidative stress biomarkers, gene expression of SIRT1, FOXO1a, FOXO3a, CAT and GPX in brain tissue via hematoxylin and eosin (H&E) staining, biochemical and enzyme-linked immunosorbent assay (ELISA) methods and Real-Time PCR analysis. CUR and nanomicelle-CUR caused significant improvement in ALP-induced brain damage by reducing the MDA levels and induction of antioxidant capacity (TTG, TAC and SOD levels) and antioxidant enzymes (CAT, GPX), modulation of histopathological changes and up-regulation of gene expression of SIRT1 in brain tissue. It was concluded that nanomicelle-CUR treatment ameliorated the harmful effects of ALP-induced brain toxicity by reducing oxidative stress. Therefore, it could be considered a suitable therapeutic choice for ALP poisoning.
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Affiliation(s)
- Milad Khodavysi
- Department of Pharmacology and Toxicology, School of Pharmacy, Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Nejat Kheiripour
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Hassan Ghasemi
- Department of Clinical Biochemistry, Abadan University of Medical Sciences, Abadan, Iran
| | - Sara Soleimani-Asl
- Department of Anatomical Sciences, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Ali Fathi Jouzdani
- Neuroscience and Artificial Intelligence Research Group (NAIRG), Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran
- USERN office, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammadmahdi Sabahi
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Zahra Ganji
- USERN office, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Zahra Azizi
- Neuroscience and Artificial Intelligence Research Group (NAIRG), Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran
- USERN office, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Akram Ranjbar
- Department of Pharmacology and Toxicology, School of Pharmacy, Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
- * Correspondence: E-mail: ; Tel: +988138381590
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18
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Bui TA, Jickling GC, Winship IR. Neutrophil dynamics and inflammaging in acute ischemic stroke: A transcriptomic review. Front Aging Neurosci 2022; 14:1041333. [PMID: 36620775 PMCID: PMC9813499 DOI: 10.3389/fnagi.2022.1041333] [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: 09/10/2022] [Accepted: 11/28/2022] [Indexed: 12/24/2022] Open
Abstract
Stroke is among the leading causes of death and disability worldwide. Restoring blood flow through recanalization is currently the only acute treatment for cerebral ischemia. Unfortunately, many patients that achieve a complete recanalization fail to regain functional independence. Recent studies indicate that activation of peripheral immune cells, particularly neutrophils, may contribute to microcirculatory failure and futile recanalization. Stroke primarily affects the elderly population, and mortality after endovascular therapies is associated with advanced age. Previous analyses of differential gene expression across injury status and age identify ischemic stroke as a complex age-related disease. It also suggests robust interactions between stroke injury, aging, and inflammation on a cellular and molecular level. Understanding such interactions is crucial in developing effective protective treatments. The global stroke burden will continue to increase with a rapidly aging human population. Unfortunately, the mechanisms of age-dependent vulnerability are poorly defined. In this review, we will discuss how neutrophil-specific gene expression patterns may contribute to poor treatment responses in stroke patients. We will also discuss age-related transcriptional changes that may contribute to poor clinical outcomes and greater susceptibility to cerebrovascular diseases.
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Affiliation(s)
- Truong An Bui
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada
| | - Glen C. Jickling
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada,Department of Medicine, Division of Neurology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Ian R. Winship
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada,Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada,*Correspondence: Ian R. Winship,
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Chebulic Acid Prevents Hypoxia Insult via Nrf2/ARE Pathway in Ischemic Stroke. Nutrients 2022; 14:nu14245390. [PMID: 36558549 PMCID: PMC9781341 DOI: 10.3390/nu14245390] [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: 11/29/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Excessive reactive oxygen species (ROS) production contributes to brain ischemia/reperfusion (I/R) injury through many mechanisms including inflammation, apoptosis, and cellular necrosis. Chebulic acid (CA) isolated from Terminalia chebula has been found to have various biological effects, such as antioxidants. In this study, we investigated the mechanism of the anti-hypoxic neuroprotective effect of CA in vitro and in vivo. The results showed that CA could protect against oxygen-glucose deprivation/reoxygenation (OGD/R) induced neurotoxicity in SH-SY5Y cells, as evidenced by the enhancement of cell viability and improvement of total superoxide dismutase (T-SOD) in SH-SY5Y cells. CA also attenuated OGD/R-induced elevations of malondialdehyde (MDA) and ROS in SH-SY5Y cells. Nuclear factor-E2-related factor 2 (Nrf2) is one of the key regulators of endogenous antioxidant defense. CA acted as antioxidants indirectly by upregulating antioxidant-responsive-element (ARE) and Nrf2 nuclear translocation to relieve OGD/R-induced oxidative damage. Furthermore, the results showed that CA treatment resulted in a significant decrease in ischemic infarct volume and improved performance in the motor ability of mice 24 h after stroke. This study provides a new niche targeting drug to oppose ischemic stroke and reveals the promising potential of CA for the control of ischemic stroke in humans.
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20
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Wei Z, Xie Y, Wei M, Zhao H, Ren K, Feng Q, Xu Y. New insights in ferroptosis: Potential therapeutic targets for the treatment of ischemic stroke. Front Pharmacol 2022; 13:1020918. [PMID: 36425577 PMCID: PMC9679292 DOI: 10.3389/fphar.2022.1020918] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 10/26/2022] [Indexed: 10/22/2023] Open
Abstract
Stroke is a common disease in clinical practice, which seriously endangers people's physical and mental health. The neurovascular unit (NVU) plays a key role in the occurrence and development of ischemic stroke. Different from other classical types of cell death such as apoptosis, necrosis, autophagy, and pyroptosis, ferroptosis is an iron-dependent lipid peroxidation-driven new form of cell death. Interestingly, the function of NVU and stroke development can be regulated by activating or inhibiting ferroptosis. This review systematically describes the NVU in ischemic stroke, provides a comprehensive overview of the regulatory mechanisms and key regulators of ferroptosis, and uncovers the role of ferroptosis in the NVU and the progression of ischemic stroke. We further discuss the latest progress in the intervention of ferroptosis as a therapeutic target for ischemic stroke and summarize the research progress and regulatory mechanism of ferroptosis inhibitors on stroke. In conclusion, ferroptosis, as a new form of cell death, plays a key role in ischemic stroke and is expected to become a new therapeutic target for this disease.
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Affiliation(s)
- Ziqing Wei
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Clinical Systems Biology Laboratories, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yi Xie
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Mingze Wei
- The Second Clinical Medical College, Harbin Medical University, Harbin, China
| | - Huijuan Zhao
- Henan International Joint Laboratory of Thrombosis and Hemostasis, Basic Medical College, Henan University of Science and Technology, Luoyang, China
| | - Kaidi Ren
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou, China
- Henan Engineering Research Center for Application & Translation of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, China
| | - Qi Feng
- Research Institute of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Department of Integrated Traditional and Western Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Province Research Center for Kidney Disease, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yuming Xu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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21
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Nicolicht-Amorim P, Delgado-Garcia LM, Nakamura TKE, Courbassier NR, Mosini AC, Porcionatto MA. Simple and efficient protocol to isolate and culture brain microvascular endothelial cells from newborn mice. Front Cell Neurosci 2022; 16:949412. [PMID: 36313615 PMCID: PMC9606660 DOI: 10.3389/fncel.2022.949412] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 09/06/2022] [Indexed: 10/09/2023] Open
Abstract
The neurovascular unit (NVU) is a multicellular structure comprising of neurons, glial cells, and non-neural cells, and it is supported by a specialized extracellular matrix, the basal lamina. Astrocytes, brain microvascular endothelial cells (BMECs), pericytes, and smooth muscle cells constitute the blood-brain barrier (BBB). BMECs have a mesodermal origin and invade the nervous system early in neural tube development, forming the BBB anatomical core. BMECs are connected by adherent junction complexes composed of integral membrane and cytoplasmic proteins. In vivo and in vitro studies have shown that, given the proximity and relationship with neural cells, BMECs acquire a unique gene expression profile, proteome, and specific mechanical and physical properties compared to endothelial cells from the general vasculature. BMECs are fundamental in maintaining brain homeostasis by regulating transcellular and paracellular transport of fluids, molecules, and cells. Therefore, it is essential to gain in-depth knowledge of the dynamic cellular structure of the cells in the NVU and their interactions with health and disease. Here we describe a significantly improved and simplified protocol using C57BL/6 newborn mice at postnatal day 1 (PND1) to isolate, purify, and culture BMECs monolayers in two different substrates (glass coverslips and transwell culture inserts). In vitro characterization and validation of the BMEC primary culture monolayers seeded on glass or insert included light microscopy, immunolabeling, and gene expression profile. Transendothelial electrical resistance (TEER) measurement and diffusion test were used as functional assays for adherent junction complexes and integrity and permeability of BMECs monolayers. The protocol presented here for the isolation and culture of BMECs is more straightforward than previously published protocols and yields a high number of purified cells. Finally, we tested BMECs function using the oxygen-glucose deprivation (OGD) model of hypoxia. This protocol may be suitable as a bioscaffold for secondary cell seeding allowing the study and better understanding of the NVU.
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Affiliation(s)
- Priscila Nicolicht-Amorim
- Laboratory of Molecular Neurobiology, Department of Biochemistry, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Lina M. Delgado-Garcia
- Laboratory of Molecular Neurobiology, Department of Biochemistry, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Natália Rodrigues Courbassier
- Laboratory of Molecular Neurobiology, Department of Biochemistry, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Amanda Cristina Mosini
- Laboratory of Neurobiology, Department of Physiology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Marimelia A. Porcionatto
- Laboratory of Molecular Neurobiology, Department of Biochemistry, Universidade Federal de São Paulo, São Paulo, Brazil
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22
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Magnoflorine Attenuates Cerebral Ischemia-Induced Neuronal Injury via Autophagy/Sirt1/AMPK Signaling Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:2131561. [PMID: 36124014 PMCID: PMC9482485 DOI: 10.1155/2022/2131561] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 08/11/2022] [Indexed: 11/17/2022]
Abstract
Ischemic stroke is a common cause of permanent disability worldwide. Magnoflorine has been discovered to have good antioxidation, immune regulation, and cardiovascular system protection functions. However, whether magnoflorine treatment protects against cerebral ischemic stroke and the mechanism of such protection remains unknown. Here, we investigated the effect of magnoflorine on the development of ischemic stroke disorder in rats. A middle cerebral artery occlusion (MCAO) model followed by 24 h reperfusion after 90 min ischemia was used. The rats were treated with magnoflorine (10 mg/kg or 20 mg/kg) for 15 consecutive days. The neurological deficit scores, cerebral infarct volume, and brain water content were measured. The neuronal density was determined using Nissl and NeuN staining. The oxidative stress levels were determined using commercial kits. Immunofluorescence staining of LC3 and western blot assay for LC3 and p62 were used to assess autophagy. Magnoflorine treatment significantly reduced the cerebral infarct volume and brain water content and improved the neurological deficit scores in the rat MCAO model. In addition, magnoflorine ameliorated neuronal injury and neuron density in the cortex of rats. Magnoflorine also prevented oxidative damage following ischemia, reflected by the decrement of nitric oxide and malondialdehyde and the increase of glutathione (GSH) and GSH peroxidase. Moreover, the fluorescence intensity of LC3 and the ratio of LC3-II to LC3-I were remarkably downregulated in ischemic rat administration of magnoflorine. Finally, the expression levels of p62, sirtuin 1 (Sirt1), and phosphorylated-adenosine monophosphate-activated protein kinase (AMPK) were upregulated with magnoflorine. Magnoflorine attenuated the cerebral ischemia-induced neuronal damage, which was possibly associated with antioxidative stress, suppression of autophagy, and activation of the Sirt1/AMPK pathway in the rats.
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23
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Antioxidant and anti-apoptotic effects of tocotrienol-rich fraction against streptozotocin-induced diabetic retinopathy in rats. Biomed Pharmacother 2022; 153:113533. [DOI: 10.1016/j.biopha.2022.113533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/08/2022] [Accepted: 08/08/2022] [Indexed: 11/22/2022] Open
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24
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Role of Neuropilin 1 in COVID-19 Patients with Acute Ischemic Stroke. Biomedicines 2022; 10:biomedicines10082032. [PMID: 36009579 PMCID: PMC9405641 DOI: 10.3390/biomedicines10082032] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/13/2022] [Accepted: 08/17/2022] [Indexed: 12/13/2022] Open
Abstract
Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) infection can trigger the adaptive and innate immune responses, leading to uncontrolled inflammatory reactions and associated local and systematic tissue damage, along with thromboembolic disorders that may increase the risk of acute ischemic stroke (AIS) in COVID-19 patients. The neuropilin (NRP-1) which is a co-receptor for the vascular endothelial growth factor (VEGF), integrins, and plexins, is involved in the pathogenesis of AIS. NRP-1 is also regarded as a co-receptor for the entry of SARS-CoV-2 and facilitates its entry into the brain through the olfactory epithelium. NRP-1 is regarded as a cofactor for binding of SARS-CoV-2 with angiotensin-converting enzyme 2 (ACE2), since the absence of ACE2 reduces SARS-CoV-2 infectivity even in presence of NRP-1. Therefore, the aim of the present study was to clarify the potential role of NRP-1 in COVID-19 patients with AIS. SARS-CoV-2 may transmit to the brain through NRP-1 in the olfactory epithelium of the nasal cavity, leading to different neurological disorders, and therefore about 45% of COVID-19 patients had neurological manifestations. NRP-1 has the potential capability to attenuate neuroinflammation, blood–brain barrier (BBB) permeability, cerebral endothelial dysfunction (ED), and neuronal dysfunction that are uncommon in COVID-19 with neurological involvement, including AIS. Similarly, high NRP-1 serum level is linked with ED, oxidative stress, and the risk of pulmonary thrombosis in patients with severe COVID-19, suggesting a compensatory mechanism to overcome immuno-inflammatory disorders. In conclusion, NRP-1 has an important role in the pathogenesis of COVID-19 and AIS, and could be the potential biomarker linking the development of AIS in COVID-19. The present findings cannot provide a final conclusion, and thus in silico, experimental, in vitro, in vivo, preclinical, and clinical studies are recommended to confirm the potential role of NRP-1 in COVID-19, and to elucidate the pharmacological role of NRP-1 receptor agonists and antagonists in COVID-19.
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25
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Excitatory Synaptic Transmission in Ischemic Stroke: A New Outlet for Classical Neuroprotective Strategies. Int J Mol Sci 2022; 23:ijms23169381. [PMID: 36012647 PMCID: PMC9409263 DOI: 10.3390/ijms23169381] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/15/2022] [Accepted: 08/17/2022] [Indexed: 01/01/2023] Open
Abstract
Stroke is one of the leading causes of death and disability in the world, of which ischemia accounts for the majority. There is growing evidence of changes in synaptic connections and neural network functions in the brain of stroke patients. Currently, the studies on these neurobiological alterations mainly focus on the principle of glutamate excitotoxicity, and the corresponding neuroprotective strategies are limited to blocking the overactivation of ionic glutamate receptors. Nevertheless, it is disappointing that these treatments often fail because of the unspecificity and serious side effects of the tested drugs in clinical trials. Thus, in the prevention and treatment of stroke, finding and developing new targets of neuroprotective intervention is still the focus and goal of research in this field. In this review, we focus on the whole processes of glutamatergic synaptic transmission and highlight the pathological changes underlying each link to help develop potential therapeutic strategies for ischemic brain damage. These strategies include: (1) controlling the synaptic or extra-synaptic release of glutamate, (2) selectively blocking the action of the glutamate receptor NMDAR subunit, (3) increasing glutamate metabolism, and reuptake in the brain and blood, and (4) regulating the glutamate system by GABA receptors and the microbiota–gut–brain axis. Based on these latest findings, it is expected to promote a substantial understanding of the complex glutamate signal transduction mechanism, thereby providing excellent neuroprotection research direction for human ischemic stroke (IS).
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26
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Ding H, Wang K, He LQ, Yang XY, Huang HH, Liu WL, Xiao C, Du ZX, Yu L, Zhang W. A novel nano material for anti-cerebral ischemia: Preparation and Application of Borneol Angelica Polysaccharide Liposomes. J Liposome Res 2022:1-10. [DOI: 10.1080/08982104.2022.2106240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Huang Ding
- Hunan University of Chinese Medicine, Changsha, China
| | - Ke Wang
- Hunan University of Chinese Medicine, Changsha, China
| | - Lin-Qin He
- Hunan University of Chinese Medicine, Changsha, China
| | - Xiao-Yu Yang
- Hunan University of Chinese Medicine, Changsha, China
| | | | - Wen-Long Liu
- Hunan University of Chinese Medicine, Changsha, China
| | - Chen Xiao
- Hunan University of Chinese Medicine, Changsha, China
| | - Ze- Xuan Du
- Hunan University of Chinese Medicine, Changsha, China
| | - Lian- Yu
- Hunan University of Chinese Medicine, Changsha, China
| | - Wei Zhang
- Hunan University of Chinese Medicine, Changsha, China
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27
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Pineda JR, Polo Y, Pardo-Rodríguez B, Luzuriaga J, Uribe-Etxebarria V, García-Gallastegui P, Sarasua JR, Larrañaga A, Ibarretxe G. In vitro preparation of human Dental Pulp Stem Cell grafts with biodegradable polymer scaffolds for nerve tissue engineering. Methods Cell Biol 2022; 170:147-167. [PMID: 35811097 DOI: 10.1016/bs.mcb.2022.02.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Human Dental Pulp Stem Cells (hDPSCs) are one of the most promising stem cell sources for tissue engineering and regeneration, due to their extraordinary multi-lineage differentiation ability, ease of extraction from biological waste in dental clinics, safe non-tumorigenic phenotype, immune-tolerance upon in vivo transplantation, and great possibilities of application in autologous tissue reconstruction. The in vitro manipulation of hDPSCs paves the way for drug screening and tailor-made regeneration of damaged tissues, in the context of personalized medicine. The neural crest phenotype of these stem cells gives them the capacity to differentiate to a large variety of cell types, including neural-lineage cells. In this chapter, we describe various culture methods to generate different cellular phenotypes from hDPSCs, which can not only grow as mesenchymal-like plastic adherent cells, but also as non-adherent neurogenic dentospheres in serum-free medium. Floating dentospheres can be used to generate large populations of mature neuronal and glial marker expressing cells, which may be cultured over a substrate of nanopatterned scaffold based on biodegradable poly(lactide-co-caprolactone) (PLCL) to induce a controlled alignment of neurites and cell migration, to generate in vivo biocompatible constructs for nerve tissue bioengineering.
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Affiliation(s)
- Jose Ramon Pineda
- Department of Cell Biology and Histology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain; Achucarro Basque Center for Neuroscience Fundazioa, Leioa, Spain.
| | - Yurena Polo
- Polimerbio SL, Donostia-San Sebastián, Spain; Group of Science and Engineering of Polymeric Biomaterials (ZIBIO Group), Department of Mining, Metallurgy Engineering and Materials Science, POLYMAT, University of the Basque Country (UPV/EHU), Bilbao, Spain
| | - Beatriz Pardo-Rodríguez
- Department of Cell Biology and Histology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Jon Luzuriaga
- Department of Cell Biology and Histology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Verónica Uribe-Etxebarria
- Department of Cell Biology and Histology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Patricia García-Gallastegui
- Department of Cell Biology and Histology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - José Ramón Sarasua
- Polimerbio SL, Donostia-San Sebastián, Spain; Group of Science and Engineering of Polymeric Biomaterials (ZIBIO Group), Department of Mining, Metallurgy Engineering and Materials Science, POLYMAT, University of the Basque Country (UPV/EHU), Bilbao, Spain.
| | - Aitor Larrañaga
- Group of Science and Engineering of Polymeric Biomaterials (ZIBIO Group), Department of Mining, Metallurgy Engineering and Materials Science, POLYMAT, University of the Basque Country (UPV/EHU), Bilbao, Spain.
| | - Gaskon Ibarretxe
- Department of Cell Biology and Histology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain.
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Ala M, Eftekhar SP. The Footprint of Kynurenine Pathway in Cardiovascular Diseases. Int J Tryptophan Res 2022; 15:11786469221096643. [PMID: 35784899 PMCID: PMC9248048 DOI: 10.1177/11786469221096643] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/28/2022] [Indexed: 12/30/2022] Open
Abstract
Kynurenine pathway is the main route of tryptophan metabolism and produces several metabolites with various biologic properties. It has been uncovered that several cardiovascular diseases are associated with the overactivation of kynurenine pathway and kynurenine and its metabolites have diagnostic and prognostic value in cardiovascular diseases. Furthermore, it was found that several kynurenine metabolites can differently affect cardiovascular health. For instance, preclinical studies have shown that kynurenine, xanthurenic acid and cis-WOOH decrease blood pressure; kynurenine and 3-hydroxyanthranilic acid prevent atherosclerosis; kynurenic acid supplementation and kynurenine 3-monooxygenase (KMO) inhibition improve the outcome of stroke. Indoleamine 2,3-dioxygenase (IDO) overactivity and increased kynurenine levels improve cardiac and vascular transplantation outcomes, whereas exacerbating the outcome of myocardial ischemia, post-ischemic myocardial remodeling, and abdominal aorta aneurysm. IDO inhibition and KMO inhibition are also protective against viral myocarditis. In addition, dysregulation of kynurenine pathway is observed in several conditions such as senescence, depression, diabetes, chronic kidney disease (CKD), cirrhosis, and cancer closely connected to cardiovascular dysfunction. It is worth defining the exact effect of each metabolite of kynurenine pathway on cardiovascular health. This narrative review is the first review that separately discusses the involvement of kynurenine pathway in different cardiovascular diseases and dissects the underlying molecular mechanisms.
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Affiliation(s)
- Moein Ala
- School of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Seyed Parsa Eftekhar
- Student Research Committee, Health Research Center, Babol University of Medical Sciences, Babol, Iran
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Neuroprotection of everolimus against focal cerebral ischemia-reperfusion injury in rats. J Stroke Cerebrovasc Dis 2022; 31:106576. [PMID: 35633587 DOI: 10.1016/j.jstrokecerebrovasdis.2022.106576] [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: 11/28/2021] [Revised: 05/01/2022] [Accepted: 05/15/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates cell growth and metabolism and integrates various signals under physiological and pathological conditions. Altered signaling of mTOR has been shown to play pathogenic roles in ischemic stroke. In the present study, the protective effect of everolimus, the selective mTOR inhibitor, in the middle cerebral artery occlusion (MCAO) model of ischemic stroke was evaluated. METHODS Wistar rats were exposed to MCAO (30 min) followed by reperfusion for 24 h. Everolimus (100, and 500 µg/kg) was administered at the time of reperfusion, intraperitoneally. 24 h post operation, the neurological function, infarct volume, histopathological alterations and the markers of oxidative stress including superoxide dismutase (SOD) activity, malondialdehyde (MDA), and total thiol levels were analyzed in the peri-infarct region. RESULTS In the rats subjected to MCAO, everolimus ameliorated neurological deficits, neuronal cell loss, and infarct volume, as compared to the stroke group. Also, everolimus significantly increased SOD activity and total thiol content, while markedly decreased the MDA level, as compared to MCAO group. CONCLUSION Single-dose administration of everolimus significantly improved neurological deficits and inhibited cortical cell loss by enhancing redox status, subsequently protected cerebral ischemia-reperfusion injury in rats.
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Liu G, Li M, Qian S, Yu L, Qian L, Feng X. Interleukin-35 exhibits protective effects in a rat model of hypoxic-ischemic encephalopathy through the inhibition of microglia-mediated inflammation. Transl Pediatr 2022; 11:651-662. [PMID: 35685068 PMCID: PMC9173876 DOI: 10.21037/tp-22-100] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/13/2022] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Hypoxic-ischemic encephalopathy (HIE) brain damage is related to inflammatory responses and oxidative stress. Interleukin (IL)-35 is an antioxidant and anti-inflammatory cytokine. Thus, the effect of IL-35 treatment on neonatal rats with hypoxic-ischemic brain injury was investigated. METHODS A total of 96 7-day-old Sprague Dawley rats were randomly divided into three groups: sham group, HIE group, and IL-35 group. After left common carotid occlusion and 2.5 h hypoxia (HI injury), IL-35 (20 µg/g) was intraperitoneally (i.p.) administered to the pups. In vitro, BV2 cells were treated with or without IL-35 6 h before oxygen-glucose deprivation (OGD) insult and the microglia culture medium (MCM) was co-cultured with b.End3 cerebral vascular endothelial cells. Microglial polarization and activation were assessed by real-time quantitative polymerase chain reaction (RT-qPCR), Western blot, and enzyme-linked immunosorbent assay (ELISA). Endothelial cell dysfunction was measured by cell counting kit-8 and Western blot assays. RESULTS Administration of IL-35 alleviated neurological deficiencies, decreased brain edema, ameliorated cerebral infarction, and limited M1 microglial polarization in HI-injured pups. Meanwhile, IL-35 decreased pro-inflammatory cytokines, tumor necrosis factor-α, IL-1β, and reactive oxygen species generation in OGD-induced bEnd.3 cells. Furthermore, IL-35 treatment could reverse the vascular endothelial cell injury induced by microglial polarization. Finally, IL-35 markedly suppressed the activation of hypoxia-inducible factor-1α (HIF-1α) and the nuclear factor-κB (NF-κB) signaling pathway in vivo and in vitro. CONCLUSIONS IL-35 relieved hypoxic-ischemic-induced brain injury and inhibited the inflammatory response by suppressing microglial polarization and activation. These results suggest that IL-35 might have potential applications for the treatment of HIE.
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Affiliation(s)
- Guangliang Liu
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, China.,Department of Pediatrics, Binhai County People's Hospital, Bianhai, China
| | - Ming Li
- Department of Laboratory Medicine, Binhai County People's Hospital, Bianhai, China
| | - Shuang Qian
- Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis of the Ministry of Health, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Lulu Yu
- Department of Laboratory Medicine, Binhai County People's Hospital, Bianhai, China
| | - Lei Qian
- Department of Laboratory Medicine, Binhai County People's Hospital, Bianhai, China
| | - Xing Feng
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, China
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Wan T, Huang Y, Gao X, Wu W, Guo W. Microglia Polarization: A Novel Target of Exosome for Stroke Treatment. Front Cell Dev Biol 2022; 10:842320. [PMID: 35356292 PMCID: PMC8959940 DOI: 10.3389/fcell.2022.842320] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/14/2022] [Indexed: 12/14/2022] Open
Abstract
The vast majority of cells in the human body are capable of secreting exosomes. Exosomes have become an important vehicle for signaling between cells. Exosomes secreted by different cells have some of the structural and functional properties of that cell and thus have different regulatory functions. A large number of recent experimental studies have shown that exosomes from different sources have different regulatory effects on stroke, and the mechanisms still need to be elucidated. Microglia are core members of central intrinsic immune regulatory cells, which play an important regulatory role in the pathogenesis and progression of stroke. M1 microglia cause neuroinflammation and induce neurotoxic effects, while M2 microglia inhibit neuroinflammation and promote neurogenesis, thus exerting a series of neuroprotective effects. It was found that there is a close link between exosomes and microglia polarization, and that exosome inclusions such as microRNAs play a regulatory role in the M1/M2 polarization of microglia. This research reviews the role of exosomes in the regulation of microglia polarization and reveals their potential value in stroke treatment.
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Affiliation(s)
- Teng Wan
- Hengyang Medical College, University of South China, Hengyang, China.,Sports Medicine Department, Huazhong University of Science and Technology Union Shenzhen Hospital, The 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Yunling Huang
- Hengyang Medical College, University of South China, Hengyang, China
| | - Xiaoyu Gao
- Hengyang Medical College, University of South China, Hengyang, China
| | - Wanpeng Wu
- Shenzhen Futian District Maternity & Child Healthcare Hospital, Shenzhen, China
| | - Weiming Guo
- Sports Medicine Department, Huazhong University of Science and Technology Union Shenzhen Hospital, The 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
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Neuroprotective Effect of 1,3-dipalmitoyl-2-oleoylglycerol Derived from Rice Bran Oil against Cerebral Ischemia-Reperfusion Injury in Rats. Nutrients 2022; 14:nu14071380. [PMID: 35405992 PMCID: PMC9003438 DOI: 10.3390/nu14071380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/17/2022] [Accepted: 03/24/2022] [Indexed: 02/05/2023] Open
Abstract
1,3-Dipalmitoyl-2-oleoylglycerol (POP) is a triacylglyceride found in oils from various natural sources, including palm kernels, sunflower seeds, and rice bran. In the current study, the neuroprotective effects and the specific mechanism of POP derived from rice bran oil were investigated for the first time using the middle cerebral artery occlusion/reperfusion (MCAO/R) model in rats. Orally administered POP at 1, 3, or 5 mg/kg (three times: 0.5 h before MCAO, after 1 h of MCAO, and after 1 h of reperfusion) markedly reduced the MCAO/R-induced infarct/edema volume and neurobehavioral deficits. Glutathione depletion and the oxidative degradation of lipids in the rat brain induced by MCAO/R were prevented by POP administration. The upregulation of phosphorylated p38 MAPKs, inflammatory factors (inducible nitric oxide synthase (i-NOS) and cyclooxygenase-2 (COX-2)), and pro-apoptotic proteins (B-cell lymphoma-2 (Bcl-2) associated X protein (Bax) and cleaved caspase-3) and the downregulation of the anti-apoptotic protein (Bcl-2) in the ischemic brain were significantly inhibited by POP administration. In addition, downregulation of phosphatidylinositol 3′-kinase (PI3K), phosphorylated protein kinase B (Akt), and phosphorylated cyclic (adenosine monophosphate) AMP responsive element-binding protein (CREB) expression in the ischemic brain was inhibited by POP administration. These results suggest that POP might exert neuroprotective effects by inhibition of p38 MAPK and activation of PI3K/Akt/CREB pathway, which is associated with anti-oxidant, anti-apoptotic, and anti-inflammatory action. From the above results, the present study provides evidence that POP might be effectively applied for the management of cerebral ischemia-related diseases.
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Wang Y, Chen W, Zhou J, Wang Y, Wang H, Wang Y. Nitrate Metabolism and Ischemic Cerebrovascular Disease: A Narrative Review. Front Neurol 2022; 13:735181. [PMID: 35309590 PMCID: PMC8927699 DOI: 10.3389/fneur.2022.735181] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 01/04/2022] [Indexed: 11/23/2022] Open
Abstract
Inorganic and organic nitrates are present in vivo and in vitro. Inorganic nitrate is considered a pool of nitric oxide (NO), but it can be converted into nitrite and NO through various mechanisms. It plays an important role in the regulation of complex physiological and biochemical reactions, such as anti-inflammatory processes and the inhibition of platelet aggregation, which are closely related to the pathology and treatment of cerebrovascular disease. Ischemic cerebrovascular disease is characterized by high incidence, recurrence, and disability rates. Nitrate, nitrite, and NO were recently found to be involved in cerebrovascular disease. In this review, we describe the relationship between cerebrovascular disease and nitrate metabolism to provide a basis for further advances in laboratory and clinical medicine.
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Affiliation(s)
- Yicong Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Laboratory for Oral and General Health Integration and Translation, Beijing, China
| | - Weiqi Chen
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Laboratory for Oral and General Health Integration and Translation, Beijing, China
| | - Jian Zhou
- Laboratory for Oral and General Health Integration and Translation, Beijing, China
- School of Stomatology, Capital Medical University, Beijing, China
| | - Yongjun Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Hao Wang
- Laboratory for Oral and General Health Integration and Translation, Beijing, China
- Department of Stomatology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- *Correspondence: Hao Wang
| | - Yilong Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Laboratory for Oral and General Health Integration and Translation, Beijing, China
- Yilong Wang
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Advanced drug delivery system against ischemic stroke. J Control Release 2022; 344:173-201. [DOI: 10.1016/j.jconrel.2022.02.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 02/28/2022] [Accepted: 02/28/2022] [Indexed: 02/06/2023]
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Research Progress on the Pharmacological Action of Schisantherin A. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:6420865. [PMID: 35190748 PMCID: PMC8858060 DOI: 10.1155/2022/6420865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/23/2021] [Accepted: 01/21/2022] [Indexed: 11/18/2022]
Abstract
Schisantherin A (Sch A) is a dibenzocyclooctadiene lignan monomer isolated from the fruit of Schisandra chinensis (Turcz.) Baill. (S. chinensis). At present, many studies have shown that Sch A has a wide range of pharmacological effects, including its anti-Parkinson and anti-inflammatory effects and ability to protect the liver, protect against ischemia-reperfusion (I/R) injury, suppress osteoclast formation, and improve learning and memory. Its mechanism may be related to the antioxidant, anti-inflammatory, and antiapoptotic properties of Sch A through the MAPK, NF-κB, AKT/GSK3β, and PI3K/AKT pathways. This is the first review of the recent studies on the pharmacological mechanism of Sch A.
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Huang G, Zang J, He L, Zhu H, Huang J, Yuan Z, Chen T, Xu A. Bioactive Nanoenzyme Reverses Oxidative Damage and Endoplasmic Reticulum Stress in Neurons under Ischemic Stroke. ACS NANO 2022; 16:431-452. [PMID: 34958560 DOI: 10.1021/acsnano.1c07205] [Citation(s) in RCA: 74] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Designing translational antioxidative agents that could scavenge free radicals produced during reperfusion in brain ischemia stroke and alleviate neurologic damage is the main objective for ischemic stroke treatment. Herein, we explored and simply synthesized a biomimic and translational Mn3O4 nanoenzyme (HSA-Mn3O4) to constrain ischemic stroke reperfusion-induced nervous system injury. This nanosystem exhibits reduced levels of inflammation and prolonged circulation time and potent ROS scavenging activities. As expected, HSA-Mn3O4 effectively inhibits oxygen and glucose deprivation-mediated cell apoptosis and endoplasmic reticulum stress and demonstrates neuroprotective capacity against ischemic stroke and reperfusion injury of brain tissue. Furthermore, HSA-Mn3O4 effectively releases Mn ions and promotes the increase of superoxide dismutase 2 activity. Therefore, HSA-Mn3O4 inhibits brain tissue damage by restraining cell apoptosis and endoplasmic reticulum stress in vivo. Taken together, this study not only sheds light on design of biomimic and translational nanomedicine but also reveals the neuroprotective action mechanisms against ischemic stroke and reperfusion injury.
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Affiliation(s)
- Guanning Huang
- Department of Neurology and Stroke Center, The First Affiliated Hospital and Department of Chemistry, Jinan University, Guangzhou 510632, P.R. China
| | - Jiankun Zang
- Department of Neurology and Stroke Center, The First Affiliated Hospital and Department of Chemistry, Jinan University, Guangzhou 510632, P.R. China
| | - Lizhen He
- Department of Neurology and Stroke Center, The First Affiliated Hospital and Department of Chemistry, Jinan University, Guangzhou 510632, P.R. China
| | - Huili Zhu
- Department of Neurology and Stroke Center, The First Affiliated Hospital and Department of Chemistry, Jinan University, Guangzhou 510632, P.R. China
| | - Jiarun Huang
- Department of Neurology and Stroke Center, The First Affiliated Hospital and Department of Chemistry, Jinan University, Guangzhou 510632, P.R. China
| | - Zhongwen Yuan
- Department of Neurology and Stroke Center, The First Affiliated Hospital and Department of Chemistry, Jinan University, Guangzhou 510632, P.R. China
| | - Tianfeng Chen
- Department of Neurology and Stroke Center, The First Affiliated Hospital and Department of Chemistry, Jinan University, Guangzhou 510632, P.R. China
| | - Anding Xu
- Department of Neurology and Stroke Center, The First Affiliated Hospital and Department of Chemistry, Jinan University, Guangzhou 510632, P.R. China
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Voronina T, Kraineva V, Zolotov N, Kotel’nikova S, Val’dman E. The role of oxidative stress in hemorrhagic stroke and restorative effects of Mexidol. Zh Nevrol Psikhiatr Im S S Korsakova 2022; 122:65-71. [DOI: 10.17116/jnevro202212208265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Cai SC, Li XP, Li X, Tang GY, Yi LM, Hu XS. Oleanolic Acid Inhibits Neuronal Pyroptosis in Ischaemic Stroke by Inhibiting miR-186-5p Expression. Exp Neurobiol 2021; 30:401-414. [PMID: 34983881 PMCID: PMC8752321 DOI: 10.5607/en21006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 11/26/2021] [Accepted: 12/02/2021] [Indexed: 11/19/2022] Open
Abstract
Ischaemic stroke is a common condition leading to human disability and death. Previous studies have shown that oleanolic acid (OA) ameliorates oxidative injury and cerebral ischaemic damage, and miR-186-5p is verified to be elevated in serum from ischaemic stroke patients. Herein, we investigated whether OA regulates miR-186-5p expression to control neuroglobin (Ngb) levels, thereby inhibiting neuronal pyroptosis in ischaemic stroke. Three concentrations of OA (0.5, 2, or 8 μM) were added to primary hippocampal neurons subjected to oxygen–glucose deprivation/reperfusion (OGD/R), a cell model of ischaemic stroke. We found that OA treatment markedly inhibited pyroptosis. qRT–PCR and western blot revealed that OA suppressed the expression of pyroptosis-associated genes. Furthermore, OA inhibited LDH and proinflammatory cytokine release. In addition, miR-186-5p was downregulated while Ngb was upregulated in OA-treated OGD/R neurons. MiR-186-5p knockdown repressed OGD/R-induced pyroptosis and suppressed LDH and inflammatory cytokine release. In addition, a dual luciferase reporter assay confirmed that miR-186-5p directly targeted Ngb. OA reduced miR-186-5p to regulate Ngb levels, thereby inhibiting pyroptosis in both OGD/R-treated neurons and MCAO mice. In conclusion, OA alleviates pyroptosis in vivo and in vitro by downregulating miR-186-5p and upregulating Ngb expression, which provides a novel theoretical basis illustrating that OA can be considered a drug for ischaemic stroke.
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Affiliation(s)
- Shi-Chang Cai
- Department of Human Anatomy, School of Basic Medical Sciences, Hunan University of Medicine, Huaihua 418000, P.R. China
| | - Xiu-Ping Li
- School of Public Health and Laboratory Medicine, Hunan University of Medicine, Huaihua 418000, P.R. China
| | - Xing Li
- School of Basic Medical Sciences, Shaoyang University, Shaoyang 422000, P.R. China
| | - Gen-Yun Tang
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Hunan University of Medicine, Huaihua 418000, Hunan Province, P.R. China
| | - Li-Ming Yi
- Department of Human Anatomy, School of Basic Medical Sciences, Hunan University of Medicine, Huaihua 418000, P.R. China
| | - Xiang-Shang Hu
- Department of Human Anatomy, School of Basic Medical Sciences, Hunan University of Medicine, Huaihua 418000, P.R. China
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Xie J, Kittur FS, Li PA, Hung CY. Rethinking the necessity of low glucose intervention for cerebral ischemia/reperfusion injury. Neural Regen Res 2021; 17:1397-1403. [PMID: 34916409 PMCID: PMC8771096 DOI: 10.4103/1673-5374.330592] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Glucose is the essential and almost exclusive metabolic fuel for the brain. Ischemic stroke caused by a blockage in one or more cerebral arteries quickly leads to a lack of regional cerebral blood supply resulting in severe glucose deprivation with subsequent induction of cellular homeostasis disturbance and eventual neuronal death. To make up ischemia-mediated adenosine 5′-triphosphate depletion, glucose in the ischemic penumbra area rapidly enters anaerobic metabolism to produce glycolytic adenosine 5′-triphosphate for cell survival. It appears that an increase in glucose in the ischemic brain would exert favorable effects. This notion is supported by in vitro studies, but generally denied by most in vivo studies. Clinical studies to manage increased blood glucose levels after stroke also failed to show any benefits or even brought out harmful effects while elevated admission blood glucose concentrations frequently correlated with poor outcomes. Surprisingly, strict glycaemic control in clinical practice also failed to yield any beneficial outcome. These controversial results from glucose management studies during the past three decades remain a challenging question of whether glucose intervention is needed for ischemic stroke care. This review provides a brief overview of the roles of cerebral glucose under normal and ischemic conditions and the results of managing glucose levels in non-diabetic patients. Moreover, the relationship between blood glucose and cerebral glucose during the ischemia/reperfusion processes and the potential benefits of low glucose supplements for non-diabetic patients are discussed.
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Affiliation(s)
- Jiahua Xie
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute & Technology Enterprise, North Carolina Central University, Durham, NC, USA
| | - Farooqahmed S Kittur
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute & Technology Enterprise, North Carolina Central University, Durham, NC, USA
| | - P Andy Li
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute & Technology Enterprise, North Carolina Central University, Durham, NC, USA
| | - Chiu-Yueh Hung
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute & Technology Enterprise, North Carolina Central University, Durham, NC, USA
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Mitochondrial Transplantation Attenuates Cerebral Ischemia-Reperfusion Injury: Possible Involvement of Mitochondrial Component Separation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:1006636. [PMID: 34849186 PMCID: PMC8627565 DOI: 10.1155/2021/1006636] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 08/28/2021] [Accepted: 10/27/2021] [Indexed: 12/22/2022]
Abstract
Background Mitochondrial dysfunctions play a pivotal role in cerebral ischemia-reperfusion (I/R) injury. Although mitochondrial transplantation has been recently explored for the treatment of cerebral I/R injury, the underlying mechanisms and fate of transplanted mitochondria are still poorly understood. Methods Mitochondrial morphology and function were assessed by fluorescent staining, electron microscopy, JC-1, PCR, mitochondrial stress testing, and metabolomics. Therapeutic effects of mitochondria were evaluated by cell viability, reactive oxygen species (ROS), and apoptosis levels in a cellular hypoxia-reoxygenation model. Rat middle cerebral artery occlusion model was applied to assess the mitochondrial therapy in vivo. Transcriptomics was performed to explore the underlying mechanisms. Mitochondrial fate tracking was implemented by a variety of fluorescent labeling methods. Results Neuro-2a (N2a) cell-derived mitochondria had higher mitochondrial membrane potential, more active oxidative respiration capacity, and less mitochondrial DNA copy number. Exogenous mitochondrial transplantation increased cellular viability in an oxygen-dependent manner, decreased ROS and apoptosis levels, improved neurobehavioral deficits, and reduced infarct size. Transcriptomic data showed that the differential gene enrichment pathways are associated with metabolism, especially lipid metabolism. Mitochondrial tracking indicated specific parts of the exogenous mitochondria fused with the mitochondria of the host cell, and others were incorporated into lysosomes. This process occurred at the beginning of internalization and its efficiency is related to intercellular connection. Conclusions Mitochondrial transplantation may attenuate cerebral I/R injury. The mechanism may be related to mitochondrial component separation, altering cellular metabolism, reducing ROS, and apoptosis in an oxygen-dependent manner. The way of isolated mitochondrial transfer into the cell may be related to intercellular connection.
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Wang W, Xie L, Zou X, Hu W, Tian X, Zhao G, Chen M. Pomelo peel oil suppresses TNF-α-induced necroptosis and cerebral ischaemia-reperfusion injury in a rat model of cardiac arrest. PHARMACEUTICAL BIOLOGY 2021; 59:401-409. [PMID: 33794116 PMCID: PMC8018549 DOI: 10.1080/13880209.2021.1903046] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 01/13/2021] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
CONTEXT Pomelo peel oil (PPO) [Citrus maxima (Burm.) Merr. (Rutaceae)] is reported to possess antioxidant and antimelanogenic activities. OBJECTIVE To investigate the effect of PPO [Citrus maxima (Burm.) Merr. cv. Shatian Yu] on tumour necrosis factor-α (TNF-α)-induced necroptosis in cerebral ischaemia-reperfusion injury (CIRI) after cardiac arrest (CA). MATERIALS AND METHODS Male Sprague Dawley rats were randomly assigned to six groups: sham group, PP0-L (10 mg/kg), PPO-M (20 mg/kg), PPO-H (40 mg/kg) and two control groups (CA, 0.9% saline; Gly, 10% glycerol). All drugs were administered intravenously to the CA/CPR rats within 10 min after return of spontaneous circulation (ROSC). After 24 h, rats were assessed for neuronal injury via the neurological deficit score (NDS), cerebral cortex staining and transmission electron microscopy (TEM) and expression levels of TNF-α and necroptosis-related proteins by immunoreactivity staining and western blotting. RESULTS Compared to those in the sham group (survival rate, 100% and NDS, 80), the survival rate and NDS were significantly reduced in the model groups (CA, 56.25%, 70; Gly, 62.5%, 71; PPO-L, 75%, 72; PPO-M, 87.5%, 75; PPO-H, 81.25%, 74). In the PPO-M group, Nissl bodies were significantly increased (43.67 ± 1.906 vs. 17 ± 1.732), the incidence of pathomorphological injury was lower and the necroptosis markers (TNF-α, RIPK1, RIPK3, p-MLKL/MLKL) expression was downregulated compared to those in the CA group (p < 0.05). DISCUSSION AND CONCLUSIONS The neuroprotective effects of PPO in the CA rats suggested that PPO possibility as a health product enhances the resistance ability against brain injury for humans.
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Affiliation(s)
- Wenyan Wang
- Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, People’s Republic of China
| | - Lu Xie
- Department of Physiology, Guangxi Medical University, Nanning, People’s Republic of China
| | - Xinsen Zou
- Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, People’s Republic of China
| | - Wanxiang Hu
- Department of Physiology, Guangxi Medical University, Nanning, People’s Republic of China
| | - Xinyue Tian
- Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, People’s Republic of China
| | - Gaoyang Zhao
- Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, People’s Republic of China
| | - Menghua Chen
- Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, People’s Republic of China
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Oxidative Stress in the Brain: Basic Concepts and Treatment Strategies in Stroke. Antioxidants (Basel) 2021; 10:antiox10121886. [PMID: 34942989 PMCID: PMC8698986 DOI: 10.3390/antiox10121886] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 12/31/2022] Open
Abstract
The production of free radicals is inevitably associated with metabolism and other enzymatic processes. Under physiological conditions, however, free radicals are effectively eliminated by numerous antioxidant mechanisms. Oxidative stress occurs due to an imbalance between the production and elimination of free radicals under pathological conditions. Oxidative stress is also associated with ageing. The brain is prone to oxidative damage because of its high metabolic activity and high vulnerability to ischemic damage. Oxidative stress, thus, plays a major role in the pathophysiology of both acute and chronic pathologies in the brain, such as stroke, traumatic brain injury or neurodegenerative diseases. The goal of this article is to summarize the basic concepts of oxidative stress and its significance in brain pathologies, as well as to discuss treatment strategies for dealing with oxidative stress in stroke.
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Wang Y, Ge X, Yu S, Cheng Q. Achyranthes bidentata polypeptide alleviates neurotoxicity of lipopolysaccharide-activated microglia via PI3K/Akt dependent NOX2/ROS pathway. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1522. [PMID: 34790728 PMCID: PMC8576683 DOI: 10.21037/atm-21-4027] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 10/02/2021] [Indexed: 01/02/2023]
Abstract
Background Achyranthes bidentata polypeptide fraction k (ABPPk) has been shown to protect ischemic stroke and Parkinson’s disease, and can inhibit neuroinflammation in lipopolysaccharide (LPS)-activated BV2 microglia. However, the effect of ABPPk responsible for alleviating microglial neurotoxicity remains unknown. Methods Primary microglia were cultured to investigate the effect of ABPPk on LPS-induced neuroinflammation. Microglia conditioned medium (MCM) was collected to stimulate primary cortical neurons and then the neuronal viability, lactate dehydrogenase (LDH) release, intracellular calcium influx, mitochondria membrane potential (MMP) were assessed, respectively. Postnatal day 5 Sprague-Dawley rat pups were intracerebral injected with LPS to establish an LPS-induced brain injury model. Double immunohistochemical staining for NeuN and Iba1 was performed to evaluate the effects of ABPPk on LPS-induced neuronal damage and microglial activation. TUNEL assay was conducted to detect cell apoptosis in LPS-injected brain. The effect of ABPPk on LPS-induced NADPH oxidase 2 (NOX2) expression and reactive oxygen species (ROS) production as well as the phosphorylation of protein kinase B (Akt) was detected. Moreover, LY294002 (a specific PI3K inhibitor) and SC79 (a specific Akt activator) were used to further reveal the underlying mechanism. Results ABPPk pretreatment inhibited LPS-induced NLRP3 and cleaved caspase 1 expressions as well as the mRNA levels of IL-1β and IL-18. Moreover, ABPPk inhibited glutamate release from LPS-activated microglia in a concentration-dependent manner. MCM stimulation resulted in characteristic neuronal toxicity including neuronal viability decrease, LDH release increase, calcium overload, and MMP drop. However, ABPPk pretreatment on microglia reduced the neurotoxicity of MCM. LPS intracerebral injection led to neuronal damage, microglial activation and cell apoptosis in the brain, while ABPPk preadministration significantly inhibited LPS-induced microglial activation and alleviated the brain injury. ABPPk pretreatment inhibited NOX2 expression and ROS production in LPS-activated primary microglia. Signaling pathway analysis showed that ABPPk promoted the phosphorylation of Akt in microglia and inhibited LPS-upregulated NOX2 expression, ROS production, and glutamate release, which can be eliminated by pharmacological inhibition of PI3K. Specific Akt activator could inhibit LPS-induced NOX2 expression, ROS production and glutamate release. Conclusions The present results suggested that ABPPk could alleviate neurotoxicity of LPS-activated microglia via PI3K/Akt dependent NOX2/ROS pathway.
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Affiliation(s)
- Yitong Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Xiangyu Ge
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Shu Yu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Qiong Cheng
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
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The Clinical Efficacy of Clopidogrel Bisulfate Tablets Combined with Olmesartan Medoxomil for Ischemic Stroke with Hypertension and the Effect of Angiotensin II Type 1 Receptor Level on Prognosis. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2021; 2021:4487393. [PMID: 34745325 PMCID: PMC8566065 DOI: 10.1155/2021/4487393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/30/2021] [Accepted: 10/04/2021] [Indexed: 11/30/2022]
Abstract
Background Ischemic stroke combined with hypertension can increase risks of stroke recurrence and death. Aim The aim of this study is to investigate the clinical efficacy of clopidogrel bisulfate tablets combined with olmesartan medoxomil in the treatment of ischemic stroke patients with hypertension and the effect of angiotensin II type 1 receptor (AT1R) level on prognosis. Methods Ninety ischemic stroke patients with hypertension were chosen for continuous treatment with clopidogrel bisulfate tablets and olmesartan medoxomil for 12 months. The Modified Edinburgh Scandinavian Stroke Scale (MESSS) score, Brunnstrom score, Barthel score, death, recurrence, and progression of cerebrovascular residual lesions were observed and recorded during the treatment period. According to the plasma AT1R expression of the patients before treatment, the patients were divided into a high-AT1R group and low-AT1R group. Then, survival analysis was performed. Results Compared with pretreatment, the MESSS scores of the patients at the first, second, third, sixth, ninth, and twelfth months after treatment were reduced (p < 0.01) while the Brunnstrom score and Barthel score were prominently boosted (p < 0.01). Compared with the low-AT1R group, patients in the high-AT1R group had higher rates of stroke recurrence and progression of residual cerebrovascular lesions (p < 0.05). Conclusion Clopidogrel bisulfate tablets combined with olmesartan medoxomil has prominent clinical effects in the treatment of ischemic stroke patients with hypertension, evidently improving the prognosis. In addition, the level of AT1R may be a vital factor affecting the prognosis.
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Zhao X, Li S, Mo Y, Li R, Huang S, Zhang A, Ni X, Dai Q, Wang J. DCA Protects against Oxidation Injury Attributed to Cerebral Ischemia-Reperfusion by Regulating Glycolysis through PDK2-PDH-Nrf2 Axis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5173035. [PMID: 34712383 PMCID: PMC8548159 DOI: 10.1155/2021/5173035] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/06/2021] [Accepted: 10/04/2021] [Indexed: 12/19/2022]
Abstract
Cerebral ischemic stroke (IS) is still a difficult problem to be solved; energy metabolism failure is one of the main factors causing mitochondrion dysfunction and oxidation stress damage within the pathogenesis of cerebral ischemia, which produces considerable reactive oxygen species (ROS) and opens the blood-brain barrier. Dichloroacetic acid (DCA) can inhibit pyruvate dehydrogenase kinase (PDK). Moreover, DCA has been indicated with the capability of increasing mitochondrial pyruvate uptake and promoting oxidation of glucose in the course of glycolysis, thereby improving the activity of pyruvate dehydrogenase (PDH). As a result, pyruvate flow is promoted into the tricarboxylic acid cycle to expedite ATP production. DCA has a protective effect on IS and brain ischemia/reperfusion (I/R) injury, but the specific mechanism remains unclear. This study adopted a transient middle cerebral artery occlusion (MCAO) mouse model for simulating IS and I/R injury in mice. We investigated the mechanism by which DCA regulates glycolysis and protects the oxidative damage induced by I/R injury through the PDK2-PDH-Nrf2 axis. As indicated from the results of this study, DCA may improve glycolysis, reduce oxidative stress and neuronal death, damage the blood-brain barrier, and promote the recovery of oxidative metabolism through inhibiting PDK2 and activating PDH. Additionally, DCA noticeably elevated the neurological score and reduced the infarct volume, brain water content, and necrotic neurons. Moreover, as suggested from the results, DCA elevated the content of Nrf2 as well as HO-1, i.e., the downstream antioxidant proteins pertaining to Nrf2, while decreasing the damage of BBB and the degradation of tight junction proteins. To simulate the condition of hypoxia and ischemia in vitro, HBMEC cells received exposure to transient oxygen and glucose deprivation (OGD). The DCA treatment is capable of reducing the oxidative stress and blood-brain barrier of HBMEC cells after in vitro hypoxia and reperfusion (H/R). Furthermore, this study evidenced that HBMEC cells could exhibit higher susceptibility to H/R-induced oxidative stress after ML385 application, the specific inhibitor of Nrf2. Besides, the protection mediated by DCA disappeared after ML385 application. To sum up, as revealed from the mentioned results, DCA could exert the neuroprotective effect on oxidative stress and blood-brain barrier after brain I/R injury via PDK2-PDH-Nrf2 pathway activation. Accordingly, the PDK2-PDH-Nrf2 pathway may play a key role and provide a new pharmacology target in cerebral IS and I/R protection by DCA.
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Affiliation(s)
- Xiaoyong Zhao
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang 261021, China
| | - Shan Li
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Yunchang Mo
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Ruru Li
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Shaoyi Huang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Anqi Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Xuqing Ni
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Qinxue Dai
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Junlu Wang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
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Serum levels of polychlorinated biphenyls and stroke risk among Chinese: a hospital-based case-control study. Acta Neurol Belg 2021; 121:1217-1224. [PMID: 32535835 DOI: 10.1007/s13760-020-01392-5] [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: 02/26/2020] [Accepted: 05/29/2020] [Indexed: 10/24/2022]
Abstract
Previous studies have revealed the serious human health risk effects of organic pollutants-polychlorinated biphenyls (PCBs). However, the roles of circulating PCBs on stroke risk have not been elucidated. The purpose of this study was to examine whether serum PCBs could increase the risk for stroke among Chinese participants. A total of 241 patients with stroke and age- (5-year interval) and gender-matched controls were recruited in Tianjin, China. Concentrations of 17 PCB congeners were measured by using high-resolution gas chromatography with mass spectrometric detection. Conditional logistic regression models were applied to assess the odds ratio (OR) and 95% confidential interval (CI). Significant positive associations were observed between serum total PCBs and dioxin-like PCBs and the risk for stroke (all p trends < 0.05), and the adjusted ORs for the highest tertile (T3) of serum concentration compared with the lowest tertile (T1) were 1.704 (1.073, 2.506) and 1.846 (1.156, 2.949). However, no significant association was found for non-dioxin-like PCBs (OR for T3 vs. T1: 1.388, 95%CIs: 0.850, 2.266; p trend: 0.118). Stratified analysis by stroke subtypes (ischemic or hemorrhagic strokes) showed no significant heterogeneity (OR for T3 vs. T1: 1.644 vs. 1.824; p for interaction: 0.458). The results suggest detrimental roles of PCBs, mainly dioxin-like PCBs, in stroke risk, irrespective of stroke subtypes. Further well-designed prospective studies with larger sample size are invited to confirm these associations.
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Rizzo SA, Bartley O, Rosser AE, Newland B. Oxygen-glucose deprivation in neurons: implications for cell transplantation therapies. Prog Neurobiol 2021; 205:102126. [PMID: 34339808 DOI: 10.1016/j.pneurobio.2021.102126] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 07/16/2021] [Accepted: 07/29/2021] [Indexed: 12/25/2022]
Abstract
Cell replacement therapies hold the potential to restore neuronal networks compromised by neurodegenerative diseases (such as Parkinson's disease or Huntington's disease), or focal tissue damage (via a stroke or spinal cord injury). Despite some promising results achieved to date, transplanted cells typically exhibit poor survival in the central nervous system, thus limiting therapeutic efficacy of the graft. Although cell death post-transplantation is likely to be multifactorial in causality, growing evidence suggests that the lack of vascularisation at the graft site, and the resulting ischemic host environment, may play a fundamental role in the fate of grafted cells. Herein, we summarise data showing how the deprivation of either oxygen, glucose, or both in combination, impacts the survival of neurons and review strategies which may improve graft survival in the central nervous system.
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Affiliation(s)
| | - Oliver Bartley
- Brain Repair Group, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, Wales, UK
| | - Anne E Rosser
- Brain Repair Group, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, Wales, UK; Neuroscience and Mental Health Institute and B.R.A.I.N Unit, Cardiff University, School of Medicine, Hadyn Ellis Building, Maindy Road, CF24 4HQ, Cardiff, UK
| | - Ben Newland
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, CF10 3NB, Wales, UK; Leibniz Institute for Polymer Research Dresden (IPF), Hohe Straße 6, 01069, Dresden, Germany.
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Nasal Rifampicin Improves Cognition in a Mouse Model of Dementia with Lewy Bodies by Reducing α-Synuclein Oligomers. Int J Mol Sci 2021; 22:ijms22168453. [PMID: 34445158 PMCID: PMC8395129 DOI: 10.3390/ijms22168453] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 07/29/2021] [Accepted: 08/04/2021] [Indexed: 12/02/2022] Open
Abstract
α-Synuclein oligomers are thought to play an important role in the pathogenesis of dementia with Lewy bodies (DLB). There is no effective cure for DLB at present. Previously, we demonstrated that in APP- and tau-transgenic mice, oral or intranasal rifampicin reduced brain Aβ and tau oligomers and improved mouse cognition. In the present study, we expanded our research to DLB. Rifampicin was intranasally administered to 6-month-old A53T-mutant α-synuclein-transgenic mice at 0.1 mg/day for 1 month. The mice displayed memory impairment but no motor deficit at this age, indicating a suitable model of DLB. α-Synuclein pathologies were examined by the immunohistochemical/biochemical analyses of brain tissues. Cognitive function was evaluated by the Morris water maze test. Intranasal rifampicin significantly reduced the levels of [pSer129] α-synuclein in the hippocampus and α-synuclein oligomers in the visual cortex and hippocampus. The level of the presynaptic marker synaptophysin in the hippocampus was recovered to the level in non-transgenic littermates. In the Morris water maze, a significant improvement in spatial reference memory was observed in rifampicin-treated mice. Taken together with our previous findings, these results suggest that intranasal rifampicin is a promising remedy for the prevention of neurodegenerative dementia, including Alzheimer’s disease, frontotemporal dementia, and DLB.
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Deng L, Guo Y, Liu J, Wang X, Chen S, Wang Q, Rao J, Wang Y, Zuo T, Hu Q, Zhao X, Dong Z. miR-671-5p Attenuates Neuroinflammation via Suppressing NF-κB Expression in an Acute Ischemic Stroke Model. Neurochem Res 2021; 46:1801-1813. [PMID: 33871800 DOI: 10.1007/s11064-021-03321-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 03/31/2021] [Accepted: 04/02/2021] [Indexed: 12/15/2022]
Abstract
This study was designed to investigate the role of miR-671-5p in in vitro and in vivo models of ischemic stroke (IS). Middle cerebral artery occlusion and reperfusion (MCAO/R) in C57BL/6 mice as well as oxygen-glucose deprivation and reoxygenation (OGD/R) in a mouse hippocampal HT22 neuron line were used as in vivo and in vitro models of IS injury, respectively. miR-671-5p agomir, miR-671-5p antagomir, pcDNA3.1-NF-κB, and negative controls were transfected into cells using riboFECT CP reagent. miR-671-5p agomir, pcDNA3.1-NF-κB, and negative vectors were administered into MCAO/R mice via intracerebroventricular injection. The results showed that miR-671-5p was significantly downregulated and that miR-671-5p agomir alleviated injury and neuroinflammation induced by ischemic reperfusion. A dual-luciferase reporter assay confirmed that NF-κB is a direct target of miR-671-5p. Reverse experiments showed that miR-671-5p agomir reduced neuroinflammation via suppression of NF-κB expression in both in vitro and in vivo models of IS. Our data suggest that miR-671-5p may be a viable therapeutic target for diminishing neuroinflammation in patients with IS.
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Affiliation(s)
- Ling Deng
- College of Pharmacology, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing, 400016, China
- Library, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Yi Guo
- Department of Radiology, Chongqing University Central Hospital, Chongqing, 400014, China
| | - Jingdong Liu
- College of Pharmacology, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - Xuan Wang
- College of Pharmacology, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - Sha Chen
- College of Pharmacology, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - Qian Wang
- College of Pharmacology, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - Jianyan Rao
- College of Pharmacology, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - Yuchun Wang
- College of Pharmacology, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - Tianrui Zuo
- College of Pharmacology, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - Qingwen Hu
- College of Pharmacology, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - Xiahong Zhao
- College of Pharmacology, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - Zhi Dong
- College of Pharmacology, The Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing, 400016, China.
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A novel PGAM5 inhibitor LFHP-1c protects blood-brain barrier integrity in ischemic stroke. Acta Pharm Sin B 2021; 11:1867-1884. [PMID: 34386325 PMCID: PMC8343116 DOI: 10.1016/j.apsb.2021.01.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 10/15/2020] [Accepted: 11/16/2020] [Indexed: 12/13/2022] Open
Abstract
Blood–brain barrier (BBB) damage after ischemia significantly influences stroke outcome. Compound LFHP-1c was previously discovered with neuroprotective role in stroke model, but its mechanism of action on protection of BBB disruption after stroke remains unknown. Here, we show that LFHP-1c, as a direct PGAM5 inhibitor, prevented BBB disruption after transient middle cerebral artery occlusion (tMCAO) in rats. Mechanistically, LFHP-1c binding with endothelial PGAM5 not only inhibited the PGAM5 phosphatase activity, but also reduced the interaction of PGAM5 with NRF2, which facilitated nuclear translocation of NRF2 to prevent BBB disruption from ischemia. Furthermore, LFHP-1c administration by targeting PGAM5 shows a trend toward reduced infarct volume, brain edema and neurological deficits in nonhuman primate Macaca fascicularis model with tMCAO. Thus, our study identifies compound LFHP-1c as a firstly direct PGAM5 inhibitor showing amelioration of ischemia-induced BBB disruption in vitro and in vivo, and provides a potentially therapeutics for brain ischemic stroke.
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