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Yuan X, Xia Y, Jiang P, Chen J, Wang C. Neuroinflammation Targeting Pyroptosis: Molecular Mechanisms and Therapeutic Perspectives in Stroke. Mol Neurobiol 2024:10.1007/s12035-024-04050-6. [PMID: 38383921 DOI: 10.1007/s12035-024-04050-6] [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: 11/16/2023] [Accepted: 02/06/2024] [Indexed: 02/23/2024]
Abstract
Pyroptosis is a recently identified type of pro-inflammatory programmed cell death (PCD) mediated by inflammasomes and nucleotide oligomerization domain-like receptors (NLs) and dependent on members of the caspase family. Pyroptosis has been widely reported to participate in the occurrence and progression of various inflammatory diseases, including stroke, a frequently lethal disease with high prevalence and many complications. To date, there have been no effectively therapeutic strategies and methods for treating stroke. Pyroptosis is thought to be closely related to the occurrence and development of stroke. Understanding inflammatory responses induced by the activation of pyroptosis would be hopeful to provide feasible approaches and strategies. Targeting on molecules in the upstream or downstream of pyroptosis pathway has shown promise in the treatment of stroke. The present review summarizes current research on the characteristics of pyroptosis, the function and pathological phenomena of pyroptosis in stroke, the molecule mechanisms related to inflammatory pathways, and the drugs and other molecules that can affect outcomes after stroke. These findings may help identify possible targets or new strategies for the diagnosis and treatment of stroke.
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Affiliation(s)
- Xiwen Yuan
- Neurobiology Key Laboratory of Jining Medical University, Jining, 272067, China
| | - Yiwen Xia
- Neurobiology Key Laboratory of Jining Medical University, Jining, 272067, China
| | - Pei Jiang
- Institute of Clinical Pharmacy & Pharmacology, Jining First People's Hospital, Jining Medical University, Jining, 272011, China
| | - Jing Chen
- Neurobiology Key Laboratory of Jining Medical University, Jining, 272067, China.
- Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK.
| | - Chunmei Wang
- Neurobiology Key Laboratory of Jining Medical University, Jining, 272067, China.
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Gareev I, Beylerli O, Zhao B. MiRNAs as potential therapeutic targets and biomarkers for non-traumatic intracerebral hemorrhage. Biomark Res 2024; 12:17. [PMID: 38308370 PMCID: PMC10835919 DOI: 10.1186/s40364-024-00568-y] [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: 09/30/2023] [Accepted: 01/20/2024] [Indexed: 02/04/2024] Open
Abstract
Non-traumatic intracerebral hemorrhage (ICH) is the most common type of hemorrhagic stroke, most often occurring between the ages of 45 and 60. Hypertension is most often the cause of ICH. Less often, atherosclerosis, blood diseases, inflammatory changes in cerebral vessels, intoxication, vitamin deficiencies, and other reasons cause hemorrhages. Cerebral hemorrhage can occur by diapedesis or as a result of a ruptured vessel. This very dangerous disease is difficult to treat, requires surgery and can lead to disability or death. MicroRNAs (miRNAs) are a class of non-coding RNAs (about 18-22 nucleotides) that are involved in a variety of biological processes including cell differentiation, proliferation, apoptosis, etc., through gene repression. A growing number of studies have demonstrated miRNAs deregulation in various cardiovascular diseases, including ICH. In addition, given that computed tomography (CT) and/or magnetic resonance imaging (MRI) are either not available or do not show clear signs of possible vessel rupture, accurate and reliable analysis of circulating miRNAs in biological fluids can help in early diagnosis for prevention of ICH and prognosis patient outcome after hemorrhage. In this review, we highlight the up-to-date findings on the deregulated miRNAs in ICH, and the potential use of miRNAs in clinical settings, such as therapeutic targets and non-invasive diagnostic/prognostic biomarker tools.
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Affiliation(s)
- Ilgiz Gareev
- Bashkir State Medical University, Ufa, 450008, Russia
| | - Ozal Beylerli
- Bashkir State Medical University, Ufa, 450008, Russia
| | - Boxian Zhao
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, No. 23 Youzheng Street, Nangang District, Harbin, 150001, China.
- Harbin Medical University No, 157, Baojian Road, Nangang District, Harbin, 150001, China.
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Wang P, Shen Y, Manaenko A, Liu F, Yang W, Xiao Z, Li P, Ran Y, Dang R, He Y, Wu Q, Xie P, Li Q. TMT-based quantitative proteomics reveals the protective mechanism of tenuigenin after experimental intracerebral hemorrhage in mice. JOURNAL OF ETHNOPHARMACOLOGY 2024; 319:117213. [PMID: 37739103 DOI: 10.1016/j.jep.2023.117213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/17/2023] [Accepted: 09/20/2023] [Indexed: 09/24/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Tenuigenin (TNG) is an extract obtained from Polygalae Radix. It possesses anti-inflammatory, antioxidant, and neuroprotective properties. However, the potential mechanism of TNG in intracerebral hemorrhage (ICH) has not been well studied. AIM OF THE STUDY In the present study, we aimed to identify the prospective mechanism of TNG in treating ICH. MATERIALS AND METHODS A total of 120 mice were divided into five groups: Sham group, ICH + vehicle group, ICH + TNG(8 mg/kg), ICH + TNG(16 mg/kg), and ICH + TNG(32 mg/kg). The modified Garcia test and beam walking test were carried out at 24 h and 72 h after ICH. Brain water content, haematoma volume and hemoglobin content examinations were performed at 72 h after ICH. TMT-based quantitative proteomics combined with bioinformatics analysis methods was used to distinguish differentially expressed proteins (DEPs) to explore potential pharmacological mechanisms. Western blotting was performed to validate representative proteins. RESULTS Our results showed that the optimal dose of TNG was 16 mg/kg, which could markedly improve neurological functions, and reduce cerebral oedema, haematoma volume and hemoglobin levels 72 h after ICH. A total of 404 DEPs (353 up-and 51 downregulated) were identified in the ICH + vehicle vs. sham group, while 342 DEPs (306 up-and 36 downregulated) and 76 DEPs (28 up-and 48 downregulated) were quantified in the TNG vs. sham group and TNG vs. ICH + vehicle group, respectively. In addition, a total of 26 DEPs were selected according to strict criteria. Complement and coagulation cascades were the most significantly enriched pathways, and two proteins (MBL-C and Car1) were further validated as hub molecules. CONCLUSIONS Our results suggested that the therapeutic effects of TNG on ICH were closely associated with the complement system, and that MBL-C and Car1 might be potential targets of TNG for the treatment of ICH.
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Affiliation(s)
- Peng Wang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - YiQing Shen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Anatol Manaenko
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - FangYu Liu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - WenSong Yang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - ZhongSong Xiao
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - PeiZheng Li
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - YuXin Ran
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - RuoZhi Dang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yong He
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - QingYuan Wu
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China; Department of Neurology, Chongqing University Three Gorges Hospital, Chongqing, China
| | - Peng Xie
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
| | - Qi Li
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China; NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
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Ji Y, Ma Y, Ma Y, Wang Y, Zhao X, Jin D, Xu L, Ge S. Rutin prevents pyroptosis and M1 microglia via Nrf2/Mac-1/caspase-1-mediated inflammasome axis to improve POCD. Int Immunopharmacol 2024; 127:111290. [PMID: 38064815 DOI: 10.1016/j.intimp.2023.111290] [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: 07/07/2023] [Revised: 11/05/2023] [Accepted: 11/22/2023] [Indexed: 01/18/2024]
Abstract
BACKGROUND Neuroinflammation following peripheral surgery plays a key role in postoperative cognitive dysfunction (POCD) development and there is no effective therapy to inflammation-mediated cognitive impairment. Recent studies showed that rutin, a natural flavonoid compound, conferred neuroprotection. However, the effects and mechanisms of rutin on cognition of surgical and aged mice and LPS-induced BV2 need deeper exploration. METHODS The effect of rutin in vivo and vitro were evaluated by Morris water maze test, HE stainin, Golgi-Cox staining, IF, IHC, RT-PCR, Flow Cytometer and Western blotting. In vivo, aged mice were treated with rutin and surgery. In vitro, rutin, Nrf2 knockdown, MAC-1 overexpression and VX765, a caspase-1 inhibitor, were administration on BV2 microglial cells. RESULTS Surgery led to compensatory increase in nuclear Nrf2 and rutin could further increase it. Neural damage was accompanied with high level in MAC-1, caspase-1-mediated pyroptosis and M1 microglia, while rutin recovered the process. Nrf2 inhibition abolished the effect of rutin with the increase of MAC-1, caspase-1-mediated pyroptosis and M1 microglia. Activation of MAC-1 abrogated protection of rutin by increase in pyroptosis and M1 microglia. Finally, we found that treatment with VX765 improved injury and increased M2 microglia against overexpression of MAC-1. CONCLUSIONS Our study indicated that rutin may be a potential therapy in POCD and exerted neural protection via Nrf2/ Mac-1/ caspase-1-mediated inflammasome axis to regulate pyroptosis and microglial polarization.
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Affiliation(s)
- Yelong Ji
- Department of Anaesthesia, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032 China
| | - Yuanyuan Ma
- Department of Anaesthesia, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032 China
| | - Yimei Ma
- Department of Anaesthesia, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032 China
| | - Ying Wang
- Department of Anaesthesia, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032 China
| | - Xining Zhao
- Department of Anaesthesia, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032 China
| | - Danfeng Jin
- Department of Anaesthesia, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032 China
| | - Li Xu
- Department of Anaesthesia, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032 China
| | - Shengjin Ge
- Department of Anaesthesia, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032 China.
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Zhao Y, Xiao Q, Sun T, Yu H, Luo M. Knockdown of LCN2 Attenuates Brain Injury After Intracerebral Hemorrhage via Suppressing Pyroptosis. Neuropsychiatr Dis Treat 2024; 20:83-99. [PMID: 38249526 PMCID: PMC10800110 DOI: 10.2147/ndt.s440065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 01/09/2024] [Indexed: 01/23/2024] Open
Abstract
Objective The aims of this study are to screen novel differentially expressed genes (DEGs) for intracerebral hemorrhage (ICH) and reveal the role of Lipocalin-2 (LCN2) in ICH. Methods We constructed the ICH model by injection of autologous whole blood into the right basal ganglia in rats. RNA-sequencing and bioinformatics analyses were performed to identify the DEGs between ICH and sham rats, and some important ones were confirmed using quantitative real-time PCR (qRT-PCR). LCN shRNA was used to knockdown of LCN2 in ICH rats. Pathological examination was carried out using 2,3,5-triphenyltetrazolium chloride (TTC) staining and Hematoxylin-eosin (HE) staining. Immunohistochemistry detected Caspase-3, and co-staining of Terminal dUTP nick end labeling (TUNEL) and NEUN staining were performed for neuron apoptosis assessment. Western blot analysis was performed to quantify pyroptosis-related proteins. Enzyme-linked immunosorbent assay (ELISA) was used to measure inflammatory cytokine levels. Results ICH rats exhibited significant hematomas, higher brain water content, obvious interstitial edema, and inflammatory infiltration, as well as more apoptotic cells in brain tissues. RNA-seq analysis identified 103 upregulated and 81 downregulated DEGs. The expression of LCN2, HSPB1, CXCL10, and MEF2B were upregulated in ICH rats. ICH triggered the release of interleukin (IL)-1β, tumor necrosis factor-α (TNF-α), and IL-18, and promoted the expression of pyroptosis-related proteins Caspase-1, GSDMD, NLRP3, and ASC. LCN2 knockdown attenuated the pathological characteristics of ICH, and also reduced pyroptosis in brain tissues. Conclusion Inhibition of LCN2 attenuates brain injury after ICH via suppressing pyroptosis, which provide guidance for ICH management.
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Affiliation(s)
- Yangyang Zhao
- The First Clinical Medical College, Gannan Medical University, Ganzhou City, Jiangxi Province, People's Republic of China
| | - Qiuxiang Xiao
- Department of Pathology, The First Affiliated Hospital of Gannan Medical University, Ganzhou City, Jiangxi Province, People's Republic of China
| | - Tao Sun
- The First Clinical Medical College, Gannan Medical University, Ganzhou City, Jiangxi Province, People's Republic of China
| | - Haiyun Yu
- The First Clinical Medical College, Gannan Medical University, Ganzhou City, Jiangxi Province, People's Republic of China
| | - Muyun Luo
- Department of Neurosurgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou City, Jiangxi Province, People's Republic of China
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Li L, Gong J, Zhang W. Treatment of Intracerebral Hemorrhage with Traditional Chinese Medicine Monomer Wogonin by Modifying NLRP3 with METTL14 to Inhibit Neuronal Cell Pyroptosis. Appl Biochem Biotechnol 2024:10.1007/s12010-023-04849-4. [PMID: 38224394 DOI: 10.1007/s12010-023-04849-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2023] [Indexed: 01/16/2024]
Abstract
The aim of this study was to investigate the alleviating effect of wogonin on intracerebral hemorrhage (ICH) and its mechanism. The hemin-treated PC-12 cells were constructed to mimic ICH in vitro. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) analysis was used for cell viability measurement and flow cytometry was for pyroptosis detection. Enzyme-linked immunosorbent assay (ELISA) assay and western blot were used to detect the protein levels of pyroptosis-related proteins. The modification level of N6-methyladenosine (m6A) methylation was detected by quantitative real-time polymerase chain reaction (qRT-PCR) combined with m6A dot blot assays. Molecular docking experiments analyzed the binding of wogonin and METTL14 protein. The correlation between METTL14 and NLRP3 was confirmed by bioinformatics analysis and dual luciferase reporter gene detection. ICH was induced in mice injected with collagenase into the basal ganglia, and the neurobehavioral damage was evaluated. Triphenyltetrazolium chloride monohydrate (TTC) staining and neurological scores were used to assess brain damage in mice. The results demonstrated that wogonin alleviated neuronal cell pyroptosis, and was molecularly docked with METTL14. Overexpression of METTL14 partly reversed the protecting effects of wogonin on brain in vitro and in vivo. Furthermore, NLRP3 was methylated by METTL14. Taken together, wogonin inhibits neuronal pyroptosis and thus treats IHC by inhibiting METTL14 and its methylated NLRP3.
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Affiliation(s)
- Libo Li
- Neurosurgery Department, The First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, 95 Shaoshan Middle Road, Yuhua District, Changsha, 410007, China
| | - Jinbing Gong
- Neurosurgery Department, The First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, 95 Shaoshan Middle Road, Yuhua District, Changsha, 410007, China
| | - Wenjia Zhang
- Neurosurgery Department, The First Affiliated Hospital of Hunan University of Traditional Chinese Medicine, 95 Shaoshan Middle Road, Yuhua District, Changsha, 410007, China.
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Gong Z, Guo J, Liu B, Guo Y, Cheng C, Jiang Y, Liang N, Hu M, Song T, Yang L, Li H, Zhang H, Zong X, Che Q, Shi N. Mechanisms of immune response and cell death in ischemic stroke and their regulation by natural compounds. Front Immunol 2024; 14:1287857. [PMID: 38274789 PMCID: PMC10808662 DOI: 10.3389/fimmu.2023.1287857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 12/26/2023] [Indexed: 01/27/2024] Open
Abstract
Ischemic stroke (IS), which is the third foremost cause of disability and death worldwide, has inflammation and cell death as its main pathological features. IS can lead to neuronal cell death and release factors such as damage-related molecular patterns, stimulating the immune system to release inflammatory mediators, thereby resulting in inflammation and exacerbating brain damage. Currently, there are a limited number of treatment methods for IS, which is a fact necessitating the discovery of new treatment targets. For this review, current research on inflammation and cell death in ischemic stroke was summarized. The complex roles and pathways of the principal immune cells (microglia, astrocyte, neutrophils, T lymphocytes, and monocytes/macrophage) in the immune system after IS in inflammation are discussed. The mechanisms of immune cell interactions and the cytokines involved in these interactions are summarized. Moreover, the cell death mechanisms (pyroptosis, apoptosis, necroptosis, PANoptosis, and ferroptosis) and pathways after IS are explored. Finally, a summary is provided of the mechanism of action of natural pharmacological active ingredients in the treatment of IS. Despite significant recent progress in research on IS, there remain many challenges that need to be overcome.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Qianzi Che
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Nannan Shi
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China
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Yang J, Zou Y, Lv X, Chen J, Cui C, Song J, Yang M, Hu H, Gao J, Xia L, Wang L, Chen L, Hou X. Didymin protects pancreatic beta cells by enhancing mitochondrial function in high-fat diet-induced impaired glucose tolerance. Diabetol Metab Syndr 2024; 16:7. [PMID: 38172956 PMCID: PMC10762818 DOI: 10.1186/s13098-023-01244-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024] Open
Abstract
PURPOSE Prolonged exposure to plasma free fatty acids (FFAs) leads to impaired glucose tolerance (IGT) which can progress to type 2 diabetes (T2D) in the absence of timely and effective interventions. High-fat diet (HFD) leads to chronic inflammation and oxidative stress, impairing pancreatic beta cell (PBC) function. While Didymin, a flavonoid glycoside derived from citrus fruits, has beneficial effects on inflammation dysfunction, its specific role in HFD-induced IGT remains yet to be elucidated. Hence, this study aims to investigate the protective effects of Didymin on PBCs. METHODS HFD-induced IGT mice and INS-1 cells were used to explore the effect and mechanism of Didymin in alleviating IGT. Serum glucose and insulin levels were measured during the glucose tolerance and insulin tolerance tests to evaluate PBC function and insulin resistance. Next, RNA-seq analysis was performed to identify the pathways potentially influenced by Didymin in PBCs. Furthermore, we validated the effects of Didymin both in vitro and in vivo. Mitochondrial electron transport inhibitor (Rotenone) was used to further confirm that Didymin exerts its ameliorative effect by enhancing mitochondria function. RESULTS Didymin reduces postprandial glycemia and enhances 30-minute postprandial insulin levels in IGT mice. Moreover, Didymin was found to enhance mitochondria biogenesis and function, regulate insulin secretion, and alleviate inflammation and apoptosis. However, these effects were abrogated with the treatment of Rotenone, indicating that Didymin exerts its ameliorative effect by enhancing mitochondria function. CONCLUSIONS Didymin exhibits therapeutic potential in the treatment of HFD-induced IGT. This beneficial effect is attributed to the amelioration of PBC dysfunction through improved mitochondrial function.
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Affiliation(s)
- Jingwen Yang
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China
| | - Ying Zou
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China
| | - Xiaoyu Lv
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China
| | - Jun Chen
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China
| | - Chen Cui
- Department of Endocrinology, The Second Hospital of Shandong University, Jinan, China
| | - Jia Song
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China
| | - Mengmeng Yang
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China
| | - Huiqing Hu
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China
| | - Jing Gao
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China
| | - Longqing Xia
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China
| | - Liming Wang
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China
| | - Li Chen
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, China
- Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, China
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Jinan, China
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Jinan, China
| | - Xinguo Hou
- Department of Endocrinology, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, China.
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, China.
- Jinan Clinical Research Center for Endocrine and Metabolic Disease, Jinan, China.
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, China.
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Jinan, China.
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Jinan, China.
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Wu D, An Q, Ji H, Dai J, Suo L, Zhang C. Retinal ischemia-reperfusion injury induces intense lipid synthesis and remodeling. Biochem Biophys Res Commun 2023; 689:149232. [PMID: 37979331 DOI: 10.1016/j.bbrc.2023.149232] [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: 10/07/2023] [Accepted: 11/06/2023] [Indexed: 11/20/2023]
Abstract
The retina is a high-metabolism tissue composed of various cell types with complex functions that relies heavily on the blood supply to maintain homeostasis. Retinal ischemia-reperfusion injury is a critical pathogenic mechanism in glaucoma, and changes in lipid molecules may lead to retinal tissue damage. However, retinal lipid profile alterations caused by this mechanism remain unclear. Thus, this study employed a retinal ischemia-reperfusion model to analyze changes in the lipid profile between sham-operated and ischemia-reperfusion groups. We discovered that ischemia-reperfusion injury-induced alterations in 338 lipid molecules, which potentially caused lipid droplet formation and mitochondrial damage. Notably, we identified characteristic changes in various lipids, including cholesterol esters, cardiolipin, and ceramide, which may serve as potential biomarkers for assessing the severity of retinal injury and therapeutic interventions. The ischemia-reperfusion-specific features identified in this study provide a more comprehensive understanding of the pathophysiological mechanisms underlying this condition.
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Affiliation(s)
- Defu Wu
- Department of Ophthalmology, Peking University Third Hospital, Beijing, 100191, China; Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, 100191, China
| | - Qi An
- Department of Ophthalmology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Hengjing Ji
- Department of Ophthalmology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Jinyue Dai
- Department of Ophthalmology, Peking University Third Hospital, Beijing, 100191, China; Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, 100191, China
| | - Lingge Suo
- Department of Ophthalmology, Peking University Third Hospital, Beijing, 100191, China; Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, 100191, China.
| | - Chun Zhang
- Department of Ophthalmology, Peking University Third Hospital, Beijing, 100191, China; Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, 100191, China.
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Bao B, Yin XP, Wen XQ, Suo YJ, Chen ZY, Li DL, Lai Q, Cao XM, Qu QM. The protective effects of EGCG was associated with HO-1 active and microglia pyroptosis inhibition in experimental intracerebral hemorrhage. Neurochem Int 2023; 170:105603. [PMID: 37633650 DOI: 10.1016/j.neuint.2023.105603] [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: 04/17/2023] [Revised: 08/01/2023] [Accepted: 08/23/2023] [Indexed: 08/28/2023]
Abstract
Intracerebral hemorrhage (ICH), which has high mortality and disability rate is associated with microglial pyroptosis and neuroinflammation, and the effective treatment methods are limited Epigallocatechin-3-gallate (EGCG) has been found to play a cytoprotective role by regulating the anti-inflammatory response to pyroptosis in other systemic diseases. However, the role of EGCG in microglial pyroptosis and neuroinflammation after ICH remains unclear. In this study, we investigated the effects of EGCG pretreatment on neuroinflammation-mediated neuronal pyroptosis and the underlying neuroprotective mechanisms in experimental ICH. EGCG pretreatment was found to remarkably improved neurobehavioral performance, and decreased the hematoma volume and cerebral edema in mice. We found that EGCG pretreatment attenuated the release of hemin-induced inflammatory cytokines (IL-1β, IL-18, and TNF-α). EGCG significantly upregulated the expression of heme oxygenase-1 (HO-1), and downregulated the levels of pyroptotic molecules and inflammatory cytokines including Caspase-1, GSDMD, NLRP3, mature IL-1β, and IL-18. EGCG pretreatment also decreased the number of Caspase-1-positive microglia and GSDMD along with NLRP3-positive microglia after ICH. Conversely, an HO-1-specific inhibitor (ZnPP), significantly inhibited the anti-pyroptosis and anti-neuroinflammation effects of EGCG. Therefore, EGCG pretreatment alleviated microglial pyroptosis and neuroinflammation, at least in part through the Caspase-1/GSDMD/NLRP3 pathway by upregulating HO-1 expression after ICH. In addition, EGCG pretreatment promoted the polarization of microglia from the M1 phenotype to M2 phenotype after ICH. The results suggest that EGCG is a potential agent to attenuate neuroinflammation via its anti-pyroptosis effect after ICH.
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Affiliation(s)
- Bing Bao
- Department of Neurology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China; Department of Neurology, The Affiliated Hospital of Jiujiang University, No.57 Xunyang East Rode, Xunyang District, Jiujiang, 332000, China
| | - Xiao-Ping Yin
- Department of Neurology, The Affiliated Hospital of Jiujiang University, No.57 Xunyang East Rode, Xunyang District, Jiujiang, 332000, China
| | - Xiao-Qing Wen
- Department of Neurology, The Affiliated Hospital of Jiujiang University, No.57 Xunyang East Rode, Xunyang District, Jiujiang, 332000, China
| | - Yi-Jun Suo
- Department of Neurology, The Affiliated Hospital of Jiujiang University, No.57 Xunyang East Rode, Xunyang District, Jiujiang, 332000, China
| | - Zhi-Ying Chen
- Department of Neurology, The Affiliated Hospital of Jiujiang University, No.57 Xunyang East Rode, Xunyang District, Jiujiang, 332000, China
| | - Dong-Ling Li
- Department of Neurology, The Affiliated Hospital of Jiujiang University, No.57 Xunyang East Rode, Xunyang District, Jiujiang, 332000, China
| | - Qin Lai
- Department of Neurology, The Affiliated Hospital of Jiujiang University, No.57 Xunyang East Rode, Xunyang District, Jiujiang, 332000, China
| | - Xian-Ming Cao
- Department of Neurology, The Affiliated Hospital of Jiujiang University, No.57 Xunyang East Rode, Xunyang District, Jiujiang, 332000, China
| | - Qiu-Min Qu
- Department of Neurology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China.
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Li Y, Liu C, Wang G, Wang H, Liu X, Huang C, Chen Y, Fan L, Zhou L, Tong A. HDAC3 inhibitor (BRD3308) modulates microglial pyroptosis and neuroinflammation through PPARγ/NLRP3/GSDMD to improve neurological function after intraventricular hemorrhage in mice. Neuropharmacology 2023:109633. [PMID: 37327970 DOI: 10.1016/j.neuropharm.2023.109633] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 05/01/2023] [Accepted: 06/06/2023] [Indexed: 06/18/2023]
Abstract
Neuroinflammation plays a vital role in intraventricular hemorrhage (IVH). Excessive neuroinflammation after IVH can activate the inflammasome in the cell and accelerate the occurrence of pyroptosis in cells, produce more inflammatory mediators, increase cell death, and lead to neurological deficits. Previous studies have reported that BRD3308 (BRD), an inhibitor of histone deacetylation by histone deacetylase 3 (HDAC3), suppresses inflammation-induced apoptosis and exhibits anti-inflammatory properties. However, it is unclear how BRD reduces the occurrence of the inflammatory cascade. In this study, we stereotactically punctured the ventricles of male C57BL/6J mice and injected autologous blood via the tail vein to simulate ventricular hemorrhage. Magnetic resonance imaging was used to detect ventricular hemorrhage and enlargement. Our findings demonstrated that BRD treatment significantly improved neurobehavioral performance and decreased neuronal loss, microglial activation, and pyroptosis in the hippocampus after IVH. At the molecular level, this treatment upregulated the expression of peroxisome proliferator-activated receptor γ (PPARγ) and inhibited NLRP3-mediated pyroptosis and inflammatory cytokines. Therefore, we concluded that BRD reduced pyroptosis and neuroinflammation and improve nerve function in part by activating the PPARγ/NLRP3/GSDMD signaling pathway. Our findings suggest a potential preventive role for BRD in IVH.
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Affiliation(s)
- Yuanyou Li
- Department of Neurosurgery, West China Medical School, West China Hospital, Sichuan University, Chengdu, China
| | - Chang Liu
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Guoqing Wang
- Department of Neurosurgery, West China Medical School, West China Hospital, Sichuan University, Chengdu, China
| | - Haoxiang Wang
- Department of Neurosurgery, West China Medical School, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaoyin Liu
- Department of Neurosurgery, West China Medical School, West China Hospital, Sichuan University, Chengdu, China
| | - Cheng Huang
- State Key Laboratory of Biotherapy, West China Medical School, Sichuan University, Chengdu, China
| | - Yaxing Chen
- Department of Neurosurgery, West China Medical School, West China Hospital, Sichuan University, Chengdu, China
| | - Lingjie Fan
- College of Computer Science, Sichuan University, Chengdu, China
| | - Liangxue Zhou
- Department of Neurosurgery, West China Medical School, West China Hospital, Sichuan University, Chengdu, China.
| | - Aiping Tong
- State Key Laboratory of Biotherapy, West China Medical School, Sichuan University, Chengdu, China.
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12
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Shang S, Sun F, Zhu Y, Yu J, Yu L, Shao W, Wang Z, Yi X. Sevoflurane preconditioning improves neuroinflammation in cerebral ischemia/reperfusion induced rats through ROS-NLRP3 pathway. Neurosci Lett 2023; 801:137164. [PMID: 36868396 DOI: 10.1016/j.neulet.2023.137164] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 02/20/2023] [Accepted: 02/27/2023] [Indexed: 03/05/2023]
Abstract
AIM We aimed to study the influence of sevoflurane on the nucleotide-binding domain and Leucine-rich repeat protein 3 (NLRP3) pathways in rats with cerebral ischemia/reperfusion (I/R) injury. METHODS Sixty Sprague-Dawley rats were equally divided into five groups randomly: sham-operated, cerebral I/R, sevoflurane (Sevo), NLRP3 inhibitor-treated (MCC950), and sevoflurane and NLRP3 inducer-treated groups. Rats' neurological functions were assessed using Longa scoring after 24 h of reperfusion, after which they were sacrificed, and cerebral infarction area was determined by triphenyl tetrazolium chloride staining. Pathological changes in damaged portions were assessed using hematoxylin-eosin and Nissl staining, and cell apoptosis was detected by terminal-deoxynucleotidyl transferase-mediated nick end labeling staining. Interleukin 1 beta (IL-1β), tumor necrosis factor α (TNF-α), interleukin-6 (IL-6), interleukin-18 (IL-18), malondialdehyde (MDA), and superoxide dismutase (SOD) levels in brain tissues were determined using enzyme-linked immunosorbent assay. Reactive oxygen species (ROS) levels were analyzed using a ROS assay kit. Protein levels of NLRP3, caspase-1, and IL-1β were determined by western blot. RESULTS Neurological function scores, cerebral infarction areas, and neuronal apoptosis index were decreased in the Sevo and MCC950 groups than in the I/R group. IL-1β, TNF-α, IL-6, IL-18, NLRP3, caspase-1, and IL-1β levels decreased in the Sevo and MCC950 groups (p < 0.05). ROS and MDA levels increased, but SOD levels increased in the Sevo and MCC950 groups than in the I/R group. NLPR3-inducer nigericin eliminated the protective effects of sevoflurane on cerebral I/R injury in rats. CONCLUSION Sevoflurane could alleviate cerebral I/R-induced brain damage by inhibiting the ROS-NLRP3 pathway.
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Affiliation(s)
- Shujun Shang
- Department of Anesthesiology, Yantaishan Hospital, Yantai 264000, China
| | - Fengqiang Sun
- Department of Anesthesiology , Feicheng People's Hospital, Feicheng 271600, China
| | - Yulin Zhu
- Department of Anesthesiology, Yantaishan Hospital, Yantai 264000, China
| | - Jingui Yu
- Department of Anesthesiology, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Lingzhi Yu
- Department of Anesthesiology, Central Hospital Affiliated To Shandong First Medical University, Jinan 250013, China
| | - Wei Shao
- Department of Anesthesiology, Yantaishan Hospital, Yantai 264000, China
| | - Zhijuan Wang
- Editorial Department of Chinese Journal of Neuro Medicine, Zhujiang Hospital of Southern Medical University, Guangzhou 510282,China
| | - Xuecai Yi
- Department of Anesthesiology, Jinan Maternity and Child Care Hospital, Jinan 250000, China.
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13
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Mu G, Li Q, Lu B, Yu X. Amelioration of nerve demyelination by hydrogen-producing silicon-based agent in neuropathic pain rats. Int Immunopharmacol 2023; 117:110033. [PMID: 36933448 DOI: 10.1016/j.intimp.2023.110033] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 03/17/2023]
Abstract
Trigeminal neuralgia (TN) is a complex orofacial neuropathic pain. The crippling condition's underlying mechanism is still not completely understood. The main cause of lightning-like pain in patients with TN may be chronic inflammation that causes nerve demyelination. Nano-silicon (Si) can safely and continuously produce hydrogen in the alkaline environment of the intestine to exert systemic anti-inflammatory effects. Hydrogen has a promising anti-neuroinflammatory impact. The study aimed to determine how intra-intestinal application of a hydrogen-producing Si-based agent affected the demyelination of the trigeminal ganglion in TN rats. We discovered that increased expression of the NLRP3 inflammasome and inflammatory cell infiltration occurred concurrently with demyelination of the trigeminal ganglion in TN rats. We could determine that the neural effect of the hydrogen-producing Si-based agent was connected to the inhibition of microglial pyroptosis by using transmission electron microscopy. The results demonstrated that the Si-based agent reduced the infiltration of inflammatory cells and the degree of neural demyelination. In a subsequent study, it was discovered that hydrogen produced by a Si-based agent regulates the pyroptosis of microglia may through the NLRP3-caspase-1-GSDMD pathway, preventing the development of chronic neuroinflammation and consequently lowering the incidence of nerve demyelination. This study offers a novel strategy for elucidating the pathogenesis of TN and developing potential therapeutic drugs.
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Affiliation(s)
- Guo Mu
- Department of Anesthesiology, Zigong Fourth People's Hospital, Zigong, Sichuan Province 643000, PR China; Laboratory of Anesthesiology, Southwest Medical University, Luzhou, Sichuan Province 646000, PR China
| | - Qiang Li
- Department of Anesthesiology, Zigong Fourth People's Hospital, Zigong, Sichuan Province 643000, PR China
| | - Bin Lu
- Department of Anesthesiology, Zigong Fourth People's Hospital, Zigong, Sichuan Province 643000, PR China.
| | - Xuan Yu
- Department of Anesthesiology, Zigong Fourth People's Hospital, Zigong, Sichuan Province 643000, PR China.
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14
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Li R, Zhang X, Gu L, Yuan Y, Luo X, Shen W, Xie Z. CDGSH iron sulfur domain 2 over-expression alleviates neuronal ferroptosis and brain injury by inhibiting lipid peroxidation via AKT/mTOR pathway following intracerebral hemorrhage in mice. J Neurochem 2023; 165:426-444. [PMID: 36802066 DOI: 10.1111/jnc.15785] [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: 07/14/2022] [Revised: 01/20/2023] [Accepted: 01/25/2023] [Indexed: 02/20/2023]
Abstract
Ferroptosis has been implicated in the pathogenesis of secondary brain injury following intracerebral hemorrhage (ICH), and regulating this process is considered a potential therapy for alleviating further brain injury. A previous study showed that CDGSH iron sulfur domain 2 (CISD2) can inhibit ferroptosis in cancer. Thus, we investigated the effects of CISD2 on ferroptosis and the mechanisms underlying its neuroprotective role in mice after ICH. CISD2 expression markedly increased after ICH. CISD2 over-expression significantly decreased the number of Fluoro-Jade C-positive neurons and alleviated brain edema and neurobehavioral deficits at 24 h after ICH. In addition, CISD2 over-expression up-regulated the expression of p-AKT, p-mTOR, ferritin heavy chain 1, glutathione peroxidase 4, ferroportin, glutathione, and glutathione peroxidase activity, which are markers of ferroptosis. Additionally, CISD2 over-expression down-regulated the levels of malonaldehyde, iron content, acyl-CoA synthetase long-chain family member 4, transferrin receptor 1, and cyclooxygenase-2 at 24 h after ICH. It also alleviated mitochondrial shrinkage and decreased the density of the mitochondrial membrane. Furthermore, CISD2 over-expression increased the number of GPX4-positive neurons following ICH induction. Conversely, knockdown of CISD2 aggravated neurobehavioral deficits, brain edema, and neuronal ferroptosis. Mechanistically, MK2206, an AKT inhibitor, suppressed p-AKT and p-mTOR and reversed the effects of CISD2 over-expression on markers of neuronal ferroptosis and acute neurological outcome. Taken together, CISD2 over-expression alleviated neuronal ferroptosis and improved neurological performance, which may be mediated through the AKT/mTOR pathway after ICH. Thus, CISD2 may be a potential target to mitigate brain injury via the anti-ferroptosis effect after ICH.
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Affiliation(s)
- Ruihao Li
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Xingyu Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Lingui Gu
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Ye Yuan
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Xu Luo
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Weiwei Shen
- Department of Endocrinology, The First Affiliated Hospital, Chongqing Medical and Pharmaceutical College, Chongqing, China
| | - Zongyi Xie
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
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15
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Zhang W, Wu Q, Hao S, Chen S. The hallmark and crosstalk of immune cells after intracerebral hemorrhage: Immunotherapy perspectives. Front Neurosci 2023; 16:1117999. [PMID: 36711145 PMCID: PMC9877537 DOI: 10.3389/fnins.2022.1117999] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 12/30/2022] [Indexed: 01/13/2023] Open
Abstract
Intracerebral hemorrhage (ICH) is one of the most dangerous types of strokes with a high morbidity and mortality rate. Currently, the treatment of ICH is not well developed, mainly because its mechanisms are still unclear. Inflammation is one of the main types of secondary injury after ICH and catalyzes the adverse consequences of ICH. A large number of immune cells are involved in neuroinflammation, such as microglia, astrocytes, oligodendrocytes, lymphocytes, macrophages, and neutrophils. Nevertheless, the characteristics and crosstalk of immune cells have not been fully elucidated. In this review, we endeavor to delve into the respective characteristics of immune cells and their interactions in neuroimmune inflammation, and further elucidate favorable immunotherapeutic approaches regarding ICH, and finally present an outlook.
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Affiliation(s)
- Wenqing Zhang
- School of Medicine, Chongqing University, Chongqing, China,Department of Neurology, Chongqing University Three Gorges Hospital, Chongqing, China
| | - Qingyuan Wu
- Department of Neurology, Chongqing University Three Gorges Hospital, Chongqing, China
| | - Shilei Hao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China,*Correspondence: Shilei Hao,
| | - Shengli Chen
- Department of Neurology, Chongqing University Three Gorges Hospital, Chongqing, China,Shengli Chen,
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16
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Sun K, Zhang H, Zhang T, Sun N, Hao J, Wang Z, Gao C. Spinal HDAC6 mediates nociceptive behaviors induced by chronic constriction injury via neuronal activation and neuroinflammation. Mol Pain 2023; 19:17448069231218352. [PMID: 37982151 PMCID: PMC10734332 DOI: 10.1177/17448069231218352] [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: 08/01/2023] [Revised: 10/23/2023] [Accepted: 11/10/2023] [Indexed: 11/21/2023] Open
Abstract
Neuropathic pain (NP) is often accompanied by psychiatric comorbidities and currently lacks effective treatment. Prior research has shown that HDAC6 plays a crucial role in pain sensitization, but the specific mechanisms remain unclear. HDAC6 inhibitors have been found to alleviate mechanical allodynia caused by inflammation and peripheral nerve damage. In this study, we investigated the cellular mechanisms of HDAC6 in the development and maintenance of neuropathic pain. Our findings indicate that HDAC6 expression in the spinal cord (SC) is upregulated in a time-dependent manner following chronic constriction injury (CCI). HDAC6 is primarily expressed in neurons and microglia in the spinal cord. CCI-induced HDAC6 production was abolished by intrathecal injection of a microglia inhibitor. ACY-1215, a specific HDAC6 inhibitor, significantly reduced CCI-induced mechanical allodynia, but not thermal hyperalgesia. ACY-1215 also inhibited neuron activation and suppressed CCI-induced pyroptosis and neuroinflammatory responses. In summary, our results suggest that HDAC6 contributes to the development and maintenance of NP through neuronal activation and neuroinflammation. HDAC6 may be a promising target for treating NP.
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Affiliation(s)
- Kai Sun
- Nanjing Medical University, Nanjing, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
- Department of Anesthesiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Hao Zhang
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Ting Zhang
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
- Department of Pain Management, Xuzhou Central Hospital, Xuzhou, China
| | - Nan Sun
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Jingru Hao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Zhiping Wang
- Nanjing Medical University, Nanjing, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
- Department of Anesthesiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Can Gao
- Nanjing Medical University, Nanjing, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
- School of Life Sciences, Xuzhou Medical University, Xuzhou, China
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17
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Glucagon-like Peptide 1 Receptor Activation Inhibits Microglial Pyroptosis via Promoting Mitophagy to Alleviate Depression-like Behaviors in Diabetic Mice. Nutrients 2022; 15:nu15010038. [PMID: 36615696 PMCID: PMC9824834 DOI: 10.3390/nu15010038] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/05/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
Depression is a frequent and serious comorbidity associated with diabetes which adversely affects prognosis and quality of life. Glucagon-like peptide-1 receptor (GLP-1R) agonists, widely used in the treatment of diabetes, are reported to exert neuroprotective effects in the central nervous system. Thus, we aim to evaluate whether GLP-1R agonist exendin-4 (EX-4) could alleviate depression-like behaviors in diabetic mice and to explore its underlying mechanism. The antidepressant effects of EX-4 were evaluated using behavioral tests in db/db mice. The effects of EX-4 on microglial pyroptosis and neuroinflammation were assessed in N9 microglial cells. EX-4 administration alleviated depression-like behaviors in diabetic db/db mice. GLP-1R activation by EX-4 significantly suppressed microglial pyroptosis and neuroinflammation by downregulation of gasdermin D (GSDMD) and interleukin (IL)-1β in diabetic mice and lipopolysaccharide (LPS)-primed N9 microglia. Mechanistically, GLP-1R activation improved mitochondrial function and promoted mitophagy by decreasing the accumulation of mitochondrial reactive oxygen species (mtROS) and intracellular ROS production. EX-4 exhibits antidepressant effects in depression associated with diabetes in diabetic mice, which may be mediated by inhibiting microglial pyroptisis via promoting mitophagy. It is supposed that GLP-1R agonists may be a promising therapy in depression associated with diabetes.
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18
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Chen Y, Peng F, Xing Z, Chen J, Peng C, Li D. Beneficial effects of natural flavonoids on neuroinflammation. Front Immunol 2022; 13:1006434. [PMID: 36353622 PMCID: PMC9638012 DOI: 10.3389/fimmu.2022.1006434] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 10/03/2022] [Indexed: 12/05/2022] Open
Abstract
Neuroinflammation is the fundamental immune response against multiple factors in the central nervous system and is characterized by the production of inflammatory mediators, activated microglia and astrocytes, and the recruitment of innate and adaptive immune cells to inflammatory sites, that contributes to the pathological process of related brain diseases, such as Alzheimer’s disease, Parkinson’s disease, depression, and stroke. Flavonoids, as a species of important natural compounds, have been widely revealed to alleviate neuroinflammation by inhibiting the production of pro-inflammatory mediators, elevating the secretion of anti-inflammatory factors, and modulating the polarization of microglia and astrocyte, mainly via suppressing the activation of NLRP3 inflammasome, as well as NF-κB, MAPK, and JAK/STAT pathways, promoting Nrf2, AMPK, BDNF/CREB, Wnt/β-Catenin, PI3k/Akt signals and SIRT1-mediated HMGB1 deacetylation. This review will provide the latest and comprehensive knowledge on the therapeutic benefits and mechanisms of natural flavonoids in neuroinflammation, and the natural flavonoids might be developed into food supplements or lead compounds for neuroinflammation-associated brain disorders.
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Affiliation(s)
- Yu Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Fu Peng
- Department of Pharmacology, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Ziwei Xing
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Junren Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Cheng Peng, ; Dan Li,
| | - Dan Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Cheng Peng, ; Dan Li,
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19
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Li Q, Zhang H, Liu X. Didymin Alleviates Cerebral Ischemia-Reperfusion Injury by Activating the PPAR Signaling Pathway. Yonsei Med J 2022; 63:956-965. [PMID: 36168249 PMCID: PMC9520049 DOI: 10.3349/ymj.2022.0040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 06/10/2022] [Accepted: 08/01/2022] [Indexed: 11/27/2022] Open
Abstract
PURPOSE Cerebral ischemia-reperfusion (IR) injury is a severe secondary injury induced by reperfusion after stroke. Didymin has been reported to have a protective effect on intracerebral hemorrhage. However, the underlying mechanism of didymin on regulating cerebral IR injury remains largely unknown. MATERIALS AND METHODS A rat cerebral IR model and oxygen-glucose deprivation/reperfusion (OGD/R) model in PC12 cells were established. Hematoxylin and eosin (H&E) was used to detect the pathological changes in brain tissues, and TUNEL staining was performed to detect apoptosis of brain tissues. MTT and flow cytometry were used to measure the viability and apoptosis of PC12 cells. QRT-PCR and western blot were used to detect inflammation cytokines in PC12 cells. Western blot was used to measure the expression of PPAR-γ, RXRA, Bax, c-caspase-3, and Bcl-2. RESULTS Didymin pretreatment decreased apoptotic rates, reduced levels of Bax and c-caspase-3, and increased Bcl-2 level in vivo and in vitro. Additionally, didymin pretreatment increased viability and decreased the inflammation levels [interleukin (IL)-1β, IL-6, tumor necrosis factor (TNF)-α, and monocyte chemotactic protein (MCP)-1] of OGD/R treated PC12 cells. Moreover, didymin activated the peroxisome proliferator-activated receptors (PPAR) signaling pathway and increased the expression of PPAR-γ and RXRA in OGD/R treated PC12 cells. Inhibition of PPAR-γ eliminated the protective effect of didymin on OGD/R treated cells. CONCLUSION Didymin protected neuron cells against IR injury in vitro and in vivo by activation of the PPAR pathway. Didymin may be a candidate drug for IR treatment.
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Affiliation(s)
- Qiang Li
- ICU Department, Jiyang People's Hospital of Jinan, Jinan, China.
| | - Hongting Zhang
- ICU Department, Jiyang People's Hospital of Jinan, Jinan, China
| | - Xiumei Liu
- ICU Department, Jiyang People's Hospital of Jinan, Jinan, China
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Gu L, Sun M, Li R, Tao Y, Luo X, Zhang X, Yuan Y, Xie Z. Microglial pyroptosis: Therapeutic target in secondary brain injury following intracerebral hemorrhage. Front Cell Neurosci 2022; 16:971469. [PMID: 36159393 PMCID: PMC9507402 DOI: 10.3389/fncel.2022.971469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 08/25/2022] [Indexed: 11/25/2022] Open
Abstract
Intracerebral hemorrhage (ICH) is a major cerebrovascular illness that causes substantial neurological sequelae and dysfunction caused by secondary brain injury (SBI), and there are no effective therapies to mitigate the disability. Microglia, the brain-resident macrophage, participates in the primary inflammatory response, and activation of microglia to an M1-like phenotype largely takes place in the acute phase following ICH. A growing body of research suggests that the pathophysiology of SBI after ICH is mediated by an inflammatory response mediated by microglial-pyroptotic inflammasomes, while inhibiting the activation of microglial pyroptosis could suppress the inflammatory cascade reaction, thus attenuating the brain injury after ICH. Pyroptosis is characterized by rapid plasma membrane disruption, followed by the release of cellular contents and pro-inflammatory mediators. In this review, we outline the molecular mechanism of microglial pyroptosis and summarize the up-to-date evidence of its involvement in the pathological process of ICH, and highlight microglial pyroptosis-targeted strategies that have the potential to cure intracerebral hemorrhage. This review contributes to a better understanding of the function of microglial pyroptosis in ICH and assesses it as a possible therapeutic target.
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Song D, Yeh CT, Wang J, Guo F. Perspectives on the mechanism of pyroptosis after intracerebral hemorrhage. Front Immunol 2022; 13:989503. [PMID: 36131917 PMCID: PMC9484305 DOI: 10.3389/fimmu.2022.989503] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 08/17/2022] [Indexed: 12/18/2022] Open
Abstract
Intracerebral hemorrhage (ICH) is a highly harmful neurological disorder with high rates of mortality, disability, and recurrence. However, effective therapies are not currently available. Secondary immune injury and cell death are the leading causes of brain injury and a poor prognosis. Pyroptosis is a recently discovered form of programmed cell death that differs from apoptosis and necrosis and is mediated by gasdermin proteins. Pyroptosis is caused by multiple pathways that eventually form pores in the cell membrane, facilitating the release of inflammatory substances and causing the cell to rupture and die. Pyroptosis occurs in neurons, glial cells, and endothelial cells after ICH. Furthermore, pyroptosis causes cell death and releases inflammatory factors such as interleukin (IL)-1β and IL-18, leading to a secondary immune-inflammatory response and further brain damage. The NOD-like receptor protein 3 (NLRP3)/caspase-1/gasdermin D (GSDMD) pathway plays the most critical role in pyroptosis after ICH. Pyroptosis can be inhibited by directly targeting NLRP3 or its upstream molecules, or directly interfering with caspase-1 expression and GSDMD formation, thus significantly improving the prognosis of ICH. The present review discusses key pathological pathways and regulatory mechanisms of pyroptosis after ICH and suggests possible intervention strategies to mitigate pyroptosis and brain dysfunction after ICH.
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Affiliation(s)
- Dengpan Song
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chi-Tai Yeh
- Department of Medical Research and Education, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- *Correspondence: Fuyou Guo, ; Jian Wang, ; Chi-Tai Yeh,
| | - Jian Wang
- Department of Pain Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Department of Human Anatomy, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
- *Correspondence: Fuyou Guo, ; Jian Wang, ; Chi-Tai Yeh,
| | - Fuyou Guo
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- *Correspondence: Fuyou Guo, ; Jian Wang, ; Chi-Tai Yeh,
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Wu X, Wan T, Gao X, Fu M, Duan Y, Shen X, Guo W. Microglia Pyroptosis: A Candidate Target for Neurological Diseases Treatment. Front Neurosci 2022; 16:922331. [PMID: 35937897 PMCID: PMC9354884 DOI: 10.3389/fnins.2022.922331] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 06/23/2022] [Indexed: 11/13/2022] Open
Abstract
In addition to its profound implications in the fight against cancer, pyroptosis have important role in the regulation of neuronal injury. Microglia are not only central members of the immune regulation of the central nervous system (CNS), but are also involved in the development and homeostatic maintenance of the nervous system. Under various pathological overstimulation, microglia pyroptosis contributes to the massive release of intracellular inflammatory mediators leading to neuroinflammation and ultimately to neuronal damages. In addition, microglia pyroptosis lead to further neurological damage by decreasing the ability to cleanse harmful substances. The pathogenic roles of microglia in a variety of CNS diseases such as neurodegenerative diseases, stroke, multiple sclerosis and depression, and many other neurological disorders have been gradually unveiled. In the context of different neurological disorders, inhibition of microglia pyroptosis by targeting NOD-like receptor family pyrin domain containing (NLRP) 3, caspase-1 and gasdermins (GSDMs) by various chemical agents as well as natural products significantly improve the symptoms or outcome in animal models. This study will provide new ideas for immunomodulatory treatment of CNS diseases.
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Affiliation(s)
- Xian Wu
- The First Affiliated Hospital of Hunan College of Traditional Chinese Medicine, Hunan Province Directly Affiliated TCM Hospital, Zhuzhou, China
| | - Teng Wan
- Huazhong University of Science and Technology Union Shenzhen Hospital, The 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Xiaoyu Gao
- Hengyang Medical College, University of South China, Hengyang, China
| | - Mingyuan Fu
- Hengyang Medical College, University of South China, Hengyang, China
| | - Yunfeng Duan
- The First Affiliated Hospital of Hunan College of Traditional Chinese Medicine, Hunan Province Directly Affiliated TCM Hospital, Zhuzhou, China
| | - Xiangru Shen
- Hengyang Medical College, University of South China, Hengyang, China
- *Correspondence: Xiangru Shen
| | - Weiming Guo
- Huazhong University of Science and Technology Union Shenzhen Hospital, The 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
- Weiming Guo
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Cheng X, Huang T, Wang C, Hao S, Shu L, Wang S, Cheng G, Zhang Q, Huang J, Chen C. Natural Compound Library Screening Identifies Oroxin A for the Treatment of Myocardial Ischemia/Reperfusion Injury. Front Pharmacol 2022; 13:894899. [PMID: 35645816 PMCID: PMC9133817 DOI: 10.3389/fphar.2022.894899] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 04/19/2022] [Indexed: 12/20/2022] Open
Abstract
Myocardial ischemia/reperfusion injury (MI/RI) is a serious pathophysiological process relating to cardiovascular disease. Oroxin A (OA) is a natural flavonoid glycoside with various biological activities. However, its effect on the pathophysiological process of MI/RI has not yet been reported. The aim of this study was to determine whether OA could alleviate MI/RI induced inflammation and pyroptosis in vivo and in vitro, providing a novel therapeutic regimen for the treatment of MI/RI. A high-throughput drug screening strategy was employed to test 2,661 natural compound libraries that can alleviate MI/RI in vivo and in vitro. The rat model of MI/RI was established by ligating the left anterior descending (LAD) coronary artery. H9c2 cells were subjected to oxygen-glucose deprivation/reperfusion (OGD/R) to simulate MI/RI. The results show that OA is able to significantly inhibit apoptosis, pyroptosis and the inflammation response (TNF-α, IL-6, IL-8, IL-10, IL-1β, IL-18) in vivo and in vitro, and reduce the release of myocardial enzymes (cTnI, cTnT, CK-MB, LDH, AST). In the rat MI/RI model, OA can not only improve cardiac function and reduce inflammatory cell infiltration but also reduce myocardial infarct size. The results revealed that OA is an effective remedy against MI/RI as it reduces the inflammatory response and inhibits pyroptosis. This may provide a new therapeutic target for the clinical treatment of MI/RI.
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Affiliation(s)
- Xingdong Cheng
- Department of Anesthesiology, The Forth Affiliated Hospital of Anhui Medical University, Hefei, China
- Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Tingting Huang
- Department of Anesthesiology, The Forth Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Chunhui Wang
- Department of Anesthesiology, The Forth Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Shuang Hao
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Liliang Shu
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shixiong Wang
- Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Gao Cheng
- Department of Anesthesiology, The Forth Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Qiaoyun Zhang
- Department of Anesthesiology, The Forth Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Jian Huang
- Department of Anesthesiology, The Forth Affiliated Hospital of Anhui Medical University, Hefei, China
- Second Clinical Medical College, Lanzhou University, Lanzhou, China
- *Correspondence: Chen Chen, ; Jian Huang,
| | - Chen Chen
- Department of Anesthesiology, The Forth Affiliated Hospital of Anhui Medical University, Hefei, China
- *Correspondence: Chen Chen, ; Jian Huang,
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