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Chen Z, Zuo Z, Song X, Zuo Y, Zhang L, Ye Y, Ma Y, Pan L, Zhao X, Jin Y. Mapping Theme Trends and Research Frontiers in Dexmedetomidine Over Past Decade: A Bibliometric Analysis. Drug Des Devel Ther 2024; 18:3043-3061. [PMID: 39050803 PMCID: PMC11268573 DOI: 10.2147/dddt.s459431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 07/04/2024] [Indexed: 07/27/2024] Open
Abstract
Background Dexmedetomidine, an α2-adrenergic receptor (α2-AR) agonist, is extensively used in clinical and animal studies owing to its sedative, analgesic, and anxiolytic effects. The diverse range of research domains associated with dexmedetomidine poses challenges in defining pivotal research directions. Therefore, this study aimed to conduct a qualitative and quantitative bibliometric study in the field of dexmedetomidine over the past decade to establish current research trends and emerging frontiers. Methods Relevant publications in the field of dexmedetomidine between 2014 and 2023 were extracted from the Web of Science Core Collection database. The bibliometric analysis, incorporating statistical and visual analyses, was conducted using CiteSpace (6.1.R6) and R (4.3.1). Results The present study encompassed a total of 5,482 publications, exhibiting a consistent upward trend over the past decade. The United States and its institutions had the highest centrality. Ji, Fuhai, and Ebert, Thomas J. were identified as the most productive author and the most cited author, respectively. As anticipated, the most cited journal was Anesthesiology. Moreover, cluster analysis of cited references and co-occurrence of keywords revealed that recent studies were primarily focused on sedation, delirium, and opioid-free anesthesia. Finally, a timeline view of keywords clusters and keywords burst demonstrated that primary research frontiers were stress response, neuroinflammation, delirium, opioid-free anesthesia, peripheral nerve block, and complications. Conclusion Current research trends and directions are focused on sedation, delirium, and opioid-free anesthesia, as evidenced by our results. The frontier of future research is anticipated to encompass basic investigations into dexmedetomidine, including stress response and neuroinflammation, as well as clinical studies focusing on delirium, opioid-free anesthesia, peripheral nerve block, and associated complications.
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Affiliation(s)
- Zheping Chen
- Department of Anesthesiology, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, People’s Republic of China
| | - Zhenxiang Zuo
- Department of Gastroenterology, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, People’s Republic of China
| | - Xinyu Song
- Department of Anesthesiology, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, People’s Republic of China
| | - Yaqun Zuo
- Department of Anesthesiology, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, People’s Republic of China
| | - Le Zhang
- Department of Anesthesiology, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, People’s Republic of China
| | - Yuyang Ye
- Department of Anesthesiology, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, People’s Republic of China
| | - Yufeng Ma
- Department of Anesthesiology, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, People’s Republic of China
| | - Lili Pan
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, People’s Republic of China
| | - Xin Zhao
- Department of Anesthesiology, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, People’s Republic of China
| | - Yanwu Jin
- Department of Anesthesiology, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, People’s Republic of China
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Jiang L, Xiong W, Yang Y, Qian J. Insight into Cardioprotective Effects and Mechanisms of Dexmedetomidine. Cardiovasc Drugs Ther 2024:10.1007/s10557-024-07579-9. [PMID: 38869744 DOI: 10.1007/s10557-024-07579-9] [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] [Accepted: 05/17/2024] [Indexed: 06/14/2024]
Abstract
PURPOSE Cardiovascular disease remains the leading cause of death worldwide. Dexmedetomidine is a highly selective α2 adrenergic receptor agonist with sedative, analgesic, anxiolytic, and sympatholytic properties, and several studies have shown its possible protective effects in cardiac injury. The aim of this review is to further elucidate the underlying cardioprotective mechanisms of dexmedetomidine, thus suggesting its potential in the clinical management of cardiac injury. RESULTS AND CONCLUSION Our review summarizes the findings related to the involvement of dexmedetomidine in cardiac injury and discusses the results in the light of different mechanisms. We found that numerous mechanisms may contribute to the cardioprotective effects of dexmedetomidine, including the regulation of programmed cell death, autophagy and fibrosis, alleviation of inflammatory response, endothelial dysfunction and microcirculatory derangements, improvement of mitochondrial dysregulation, hemodynamics, and arrhythmias. Dexmedetomidine may play a promising and beneficial role in the treatment of cardiovascular disease.
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Affiliation(s)
- Leyu Jiang
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Wei Xiong
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Yuqiao Yang
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Jinqiao Qian
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming, China.
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Han W, Wang W, Wang Q, Maduray K, Hao L, Zhong J. A review on regulation of DNA methylation during post-myocardial infarction. Front Pharmacol 2024; 15:1267585. [PMID: 38414735 PMCID: PMC10896928 DOI: 10.3389/fphar.2024.1267585] [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: 07/26/2023] [Accepted: 01/25/2024] [Indexed: 02/29/2024] Open
Abstract
Myocardial infarction (MI) imposes a huge medical and economic burden on society, and cardiac repair after MI involves a complex series of processes. Understanding the key mechanisms (such as apoptosis, autophagy, inflammation, and fibrosis) will facilitate further drug development and patient treatment. Presently, a substantial body of evidence suggests that the regulation of epigenetic processes contributes to cardiac repair following MI, with DNA methylation being among the notable epigenetic factors involved. This article will review the research on the mechanism of DNA methylation regulation after MI to provide some insights for future research and development of related drugs.
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Affiliation(s)
- Wenqiang Han
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Wenxin Wang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Qinhong Wang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Kellina Maduray
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Li Hao
- Department of Gerontology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Jingquan Zhong
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
- Department of Cardiology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, China
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Song W, Qiu N. MiR-495-3p depletion contributes to myocardial ischemia/reperfusion injury in cardiomyocytes by targeting TNC. Regen Ther 2022; 21:380-388. [PMID: 36161101 PMCID: PMC9478495 DOI: 10.1016/j.reth.2022.08.007] [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: 05/05/2022] [Revised: 08/08/2022] [Accepted: 08/25/2022] [Indexed: 11/24/2022] Open
Abstract
Background Tenascin-C (TNC) has been found to abnormally express in myocardial ischemia/reperfusion injury (MI/RI), but its effect on cardiomyocytes apoptosis is unknown and is worthy of investigation. Methods H9C2 cells were given hypoxia/reoxygenation (H/R) treatment to obtain the replica of MI/RI in vitro. The effect of H/R on viability, apoptosis and inflammation was studied by CCK-8 assay, flow cytometry, mitochondrial membrane potential (MMP) and Ca2+ measurements as well as enzyme linked immunosorbent assay. We applied bioinformatics analysis and luciferase reporter assay to screened and validated TNC-targeting miR-495-3p which was then mechanistically investigated by quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot. With the assistance of cell transfection, rescue assays were conducted. Results H9C2 cells showed diminished viability, accelerated apoptosis, elevated tumour necrosis factor alpha (TNF-α) and interleukin 1 beta (IL-1β), and TNC overexpression in response to H/R induction, while silencing of TNC partially reversed the effect of H/R treatment on the H9C2 cells. TNC silencing reduced Ca2+ level and enhanced MMP level in the H/R-stimulated cells. MiR-495-3p targeted TNC and showed a low expression in the H/R-stimulated cells. The expression of TNC was negatively regulated by miR-495-3p. Inhibition of miR-495-3p repressed viability and MMP level, and facilitated apoptosis and levels of Ca2+, TNF-α and IL-1β in the H/R-stimulated cells. The effect of TNC silencing and miR-495-3p depletion on H/R-induced cardiomyocyte injury was mutually reversed in vitro. Conclusion MiR-495-3p targeted TNC to regulate the apoptosis and inflammation of cardiomyocytes in H/R induction, which was associated with Ca2+ overload.
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Affiliation(s)
- Wei Song
- Department of Cardiology, Taizhou Central Hospital (Taizhou University Hospital), 999 Donghai Avenue, Jiaojiang District, Taizhou, Zhejiang Province, China
| | - Naiyan Qiu
- Department of Cardiology, The Fifth People's Hospital of Jinan, No. 24297 Jingshi Road, Huaiyin District, Jinan, Shandong Province, 250021, China
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Pan PK, Wang KT, Nan FH, Wu TM, Wu YS. Red Algae “Sarcodia suieae” Acetyl-Xylogalactan Downregulate Heat-Induced Macrophage Stress Factors Ddit3 and Hyou1 Compared to the Aquatic Animal Model of Nile Tilapia (Oreochromis niloticus) Brain Arachidonic Acid Expression. Int J Mol Sci 2022; 23:ijms232314662. [PMID: 36498988 PMCID: PMC9737935 DOI: 10.3390/ijms232314662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/08/2022] [Accepted: 11/15/2022] [Indexed: 11/25/2022] Open
Abstract
Anthropogenic climate change is known to be an increased stress that affects aquatic animal behavior and physiological alternations, which can induce the animal's death. In order to known whether the extracted acetyl-xylogalactan function on the regulation of the external high temperature induced death, we first selected the mammalian cell line "RAW 264.7" used in the previous experiment to evaluate the extracted acetyl-xylogalactan function. We aimed to evaluate the effects of the acetyl-xylogalactan on the RAW 264.7 macrophages and Nile Tilapia stress factor expression under the heat environment. In the in vitro cell observation, we assessed the cell survival, phagocytic activity, intracellular Ca2+ level, mitochondria potential exchange, apoptotic assay findings, galactosidase activity, RNA-seq by NGS and real-time polymerase chain reaction (QPCR) expression. In the in vivo Nile Tilapia observation aimed to evaluate the blood biochemical indicator, brain metabolites exchange and the liver morphology. In our evaluation of RAW 264.7 macrophages, the RNA sequencing and real-time polymerase chain reaction (PCR) was shown to upregulate the expression of the anti-apoptosis Cflar gene and downregulate the expression of the apoptosis factors Ddit3 and Hyou1 to protect macrophages under heat stress. We already knew the extracted acetyl-xylogalactan function on the mammalian "RAW 264.7" system. Following, we used the aquatic Nile Tilapia model as the anthropogenic climate change high temperature experiment. After feeding the Nile Tilapia with the acetyl-xylogalactan, it was found to reduce the brain arachidonic acid (AA) production, which is related to the NF-κB-induced apoptosis mechanism. Combined with the in vitro and in vivo findings, the acetyl-xylogalactan was able to reduce the heat induced cell or tissue stress.
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Affiliation(s)
- Po-Kai Pan
- Department of Aquaculture, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Kuang-Teng Wang
- Department of Aquaculture, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Fan-Hua Nan
- Department of Aquaculture, National Taiwan Ocean University, Keelung 202, Taiwan
| | - Tsung-Meng Wu
- Department of Aquaculture, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
- Correspondence: (T.-M.W.); (Y.-S.W.); Tel.: +886-8-7703202 (ext. 6223) (Y.-S.W.)
| | - Yu-Sheng Wu
- Department of Aquaculture, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
- Correspondence: (T.-M.W.); (Y.-S.W.); Tel.: +886-8-7703202 (ext. 6223) (Y.-S.W.)
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Dexmedetomidine Inhibits Parthanatos in Cardiomyocytes and in Aortic Banded Mice by the ROS-Mediated NLRP3 Inflammasome Activation. J Cardiovasc Transl Res 2022:10.1007/s12265-022-10340-y. [DOI: 10.1007/s12265-022-10340-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 11/04/2022] [Indexed: 11/24/2022]
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Shan X, Zhang J, Wei X, Tao W, Peng K, Liu H, Wang Y, Liu H, Meng X, Ji F. Dexmedetomidine attenuates renal ischemia-reperfusion injury through activating PI3K/Akt-eNOS signaling via α 2 adrenoreceptors in renal microvascular endothelial cells. FASEB J 2022; 36:e22608. [PMID: 36250975 DOI: 10.1096/fj.202101626rr] [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: 10/20/2021] [Revised: 08/24/2022] [Accepted: 09/29/2022] [Indexed: 11/11/2022]
Abstract
Renal microvascular endothelial cells (RMECs), which are closely related to regulation of vascular reactivity and modulation of inflammation, play a crucial role in the process of renal ischemia and reperfusion (I/R) injury. Previous studies have reported the protective effects of dexmedetomidine (DEX) against renal I/R injury, but little is known about the role of DEX on RMECs. This study aimed to investigate whether DEX alleviated renal I/R injury via acting on the RMECs. Mice underwent bilateral renal artery clamping for 45 min followed by reperfusion for 48 h, and the cultured neonatal mice RMECs were subjected to hypoxia for 1 h followed by reoxygenation (H/R) for 24 h. The results suggest that DEX alleviated renal I/R injury in vivo and improved cell viability of RMECs during H/R injury in vitro. Gene sequencing revealed that the PI3K/Akt was the top enriched signaling pathway and the endothelial cells were widely involved in renal I/R injury. DEX activated phosphorylation of PI3K and Akt, increased eNOS expression, and attenuated inflammatory responses. In addition, the results confirmed the distribution of α2 adrenoreceptor (α2 -AR) in RMECs. Furthermore, the protective effects of DEX against renal I/R injury were abolished by α2 -AR antagonist (atipamezole), which was partly reversed by the PI3K agonist (740 Y-P). These findings indicated that DEX protects against renal I/R injury by activating the PI3K/Akt-eNOS pathway and inhibiting inflammation responses via α2 -AR in RMECs.
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Affiliation(s)
- Xisheng Shan
- Department of Anesthesiology, the First Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Anesthesiology, Soochow University, Suzhou, China
| | - Jiaxin Zhang
- Department of Anesthesiology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiang Wei
- Department of Anesthesiology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Wenhui Tao
- Department of Anesthesiology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Ke Peng
- Department of Anesthesiology, the First Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Anesthesiology, Soochow University, Suzhou, China
| | - Huayue Liu
- Department of Anesthesiology, the First Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Anesthesiology, Soochow University, Suzhou, China
| | - Yiqing Wang
- Department of Neurology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Hong Liu
- Department of Anesthesiology and Pain Medicine, University of California Davis Health, Sacramento, California, USA
| | - Xiaowen Meng
- Department of Anesthesiology, the First Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Anesthesiology, Soochow University, Suzhou, China
| | - Fuhai Ji
- Department of Anesthesiology, the First Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Anesthesiology, Soochow University, Suzhou, China
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Meng XW, Zhang M, Hu JK, Chen XY, Long YQ, Liu H, Feng XM, Ji FH, Peng K. Activation of CCL21-GPR174/CCR7 on cardiac fibroblasts underlies myocardial ischemia/reperfusion injury. Front Genet 2022; 13:946524. [PMID: 36159993 PMCID: PMC9505909 DOI: 10.3389/fgene.2022.946524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 08/15/2022] [Indexed: 11/22/2022] Open
Abstract
Background: The mechanisms underlying myocardial ischemia/reperfusion (I/R) injury are not fully understood. This study aims to explore key candidate genes and potential therapeutic targets for treatment of myocardial I/R injury. Methods: The transcriptional profiles of ventricular myocardium during cardiac arrest, ischemia, and reperfusion were obtained from the Gene Expression Omnibus database. Based on the transcriptional data of GSE6381, functional pathway and process enrichment analyses, protein–protein interaction network, and gene set enrichment analyses were conducted. In the animal experiments, we established the myocardial I/R injury model in mice. We validated the mRNA and protein expression of the key genes using the qPCR and western blots. We further assessed the expression and localization of CCL21 and its receptors using immunofluorescence staining experiments. Results: The microarray analyses identified five key genes (CCL21, XCR1, CXCL13, EDN1, and CASR). Myocardial I/R process in mice resulted in significant myocardial infraction, histological damage, and myocardial apoptosis. The results of qPCR and western blots showed that the expression of CCL21 and CXCL13 were increased following myocardial I/R injury in mice. Furthermore, the immunofluorescence staining results revealed that the expression of GPR174/CCR7 (CCL21 receptors), but not CXCR5 (CXCL13 receptor), was elevated following myocardial I/R injury. Moreover, the activated CCL21-GPR174/CCR7 signaling was located on the cardiac fibroblasts of the myocardium with I/R injury. Conclusion: This study revealed several key factors underlying myocardial I/R injury. Of these, the activation of CCL21-GPR174/CCR7 signaling on cardiac fibroblasts was highlighted, which provides potential therapeutic targets for cardioprotection.
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Affiliation(s)
- Xiao-Wen Meng
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Anesthesiology, Soochow University, Suzhou, China
| | - Mian Zhang
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Anesthesiology, Soochow University, Suzhou, China
| | - Jun-Kai Hu
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Anesthesiology, Soochow University, Suzhou, China
| | - Xin-Yu Chen
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Anesthesiology, Soochow University, Suzhou, China
| | - Yu-Qin Long
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Anesthesiology, Soochow University, Suzhou, China
| | - Hong Liu
- Department of Anesthesiology and Pain Medicine, Davis Health System, University of California, Davis, Sacramento, CA, United States
| | - Xiao-Mei Feng
- Department of Anesthesiology, University of Utah, Salt Lake City, UT, United States
| | - Fu-Hai Ji
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Anesthesiology, Soochow University, Suzhou, China
- *Correspondence: Fu-Hai Ji, ; Ke Peng,
| | - Ke Peng
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Anesthesiology, Soochow University, Suzhou, China
- *Correspondence: Fu-Hai Ji, ; Ke Peng,
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Jian C, Shen Y, Fu H, Yu L. Effects of ultrasound-guided erector spinae plane block with dexmedetomidine combined with ropivacaine of the same dose and different concentrations on analgesic effect and rehabilitation quality of patients undergoing thoracoscopic wedge resection of the lung: a prospective, randomized, controlled trial. BMC Anesthesiol 2022; 22:225. [PMID: 35842610 PMCID: PMC9288034 DOI: 10.1186/s12871-022-01768-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 07/07/2022] [Indexed: 11/12/2022] Open
Abstract
Objective To investigate the analgesic effect and rehabilitation quality of patients undergoing thoracoscopic wedge resection of the lung under erector spinae plane (ESP) block with dexmedetomidine combined with the same dose and different concentrations of ropivacaine. Methods Seventy patients undergoing thoracoscopic wedge resection were randomly divided into groups A (n = 35) and B (n = 35). To perform ESP block, the groups were administered dexmedetomidine (0.5 μg/kg) combined with 30 mL of 0.33% ropivacaine or 20 mL of 0.5% ropivacaine, respectively, half an hour before general anesthesia induction. We compared the onset time of anesthesia, the block level, and the duration of the block between the two groups. The number of compressions of the analgesic pump within 24 h and 48 h postoperatively and the time of the first compression were noted. The visual analog scale (VAS) scores of static and cough at 0.5 h, 6 h, 12 h, 24 h, and 48 h postoperatively were noted. Furthermore, the 40-item quality of recovery questionnaire (QoR-40) score was recorded at 24 h postoperatively. In addition, we noted the time taken to get out of the bed for the first time, the length of hospital stay, analgesia satisfaction, and the occurrence of related adverse reactions and complications within 48 h postoperatively. Results The range of ESP block was wider in Group A than in Group B (P < 0.05). Group B had a significantly shorter onset time (P < 0.05) and lower static and cough VAS scores at 6 h and 12 h postoperatively (P < 0.05); this was associated with significantly fewer compressions of the analgesic pump within 24 h and 48 h postoperatively and significantly more time until the first compression of the analgesic pump was required (P < 0.05). Group B was associated with significantly superior QoR-40 scores 24 h postoperatively and significantly shorter time to get out of the bed for the first time than Group A (P < 0.05). Conclusion Dexmedetomidine combined with 0.5% ropivacaine for ESP block is better than 0.33% ropivacaine for overall analgesia and postoperative rehabilitation of patients undergoing thoracoscopic wedge resection. Trial registration ChiCTR2200058114, Date of registration: 30/03/2022.
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Affiliation(s)
- Chunfang Jian
- Department of Anesthesiology, Longyan First Affiliated Hospital of Fujian Medical University, Jiuyi North Road, Xinluo District, Longyan, 364000, Fujian, China
| | - Yi Shen
- Department of Anesthesiology, Longyan First Affiliated Hospital of Fujian Medical University, Jiuyi North Road, Xinluo District, Longyan, 364000, Fujian, China
| | - Hangxiang Fu
- Department of Anesthesiology, Longyan First Affiliated Hospital of Fujian Medical University, Jiuyi North Road, Xinluo District, Longyan, 364000, Fujian, China
| | - Lizhen Yu
- Department of Anesthesiology, Longyan First Affiliated Hospital of Fujian Medical University, Jiuyi North Road, Xinluo District, Longyan, 364000, Fujian, China.
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Tao W, Li L, Hu J, Xu S, Wang B, Ding J, Zhang M, Meng X, Wei X, Shan X, Peng K, Liu H, Ji F. Interaction between COX-2 and ER stress is involved in the apoptosis-induced myocardial ischemia/reperfusion injury. Am J Transl Res 2022; 14:3360-3371. [PMID: 35702111 PMCID: PMC9185046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 03/31/2022] [Indexed: 06/15/2023]
Abstract
PURPOSE Apoptosis induced by excessive endoplasmic reticulum (ER) stress is accompanied by the occurrence and progression of myocardial ischemia/reperfusion (I/R) injury. COX-2 is also known to affect the development of I/R damage in myocardium. However, the interaction between COX-2 and ER stress in aggravating myocardial I/R lesion is not well characterized. Therefore, the purpose of our research was to explore the interaction between COX-2 and ER stress on myocardial apoptosis. METHODS The left anterior descending (LAD) coronary artery was ligatured with a 6-0# suture for 0.5 hours and subsequently subjected to reperfusion for 3 hours to simulate myocardial I/R in mice. Oxygen glucose deprivation/reoxygenation (OGD/R) was performed on H9c2 cells to construct an in vitro model of this experiment. NS398 (COX-2 specific inhibitor) and Salubrinal (Sal, ER stress inhibitor) were administered to assess the function of COX-2 and ER stress in myocardial I/R impairment. CCK-8 assay was used to evaluate the viability of H9c2 cells under different treatment conditions. TUNEL and Hoechst staining were used to detect the occurrence of apoptosis. Infarct area/area at risk and Hematoxylin-eosin stained sections were assessed after I/R. Protein expressions of glucose-regulated protein 78 (GRP78), COX-2, phosphorylation of eukaryotic translation initiation factor 2 alpha (p-eIF2α), CCAAT/enhancer-binding protein homologous protein (CHOP), and Cleaved caspase 3 in the myocardium were examined using Western blotting. Changes in Cleaved caspase 3 expression in myocardial slices were measured by immunohistochemistry. RESULTS Sal or NS398 partly reduced I/R-induced damage as testified by the apparent decrease in infarct size after I/R and reduced cell viability following OGD/R. Sal distinctly increased p-eIF2α, but caused decreased expression of COX-2, Cleaved caspase 3, and ER stress-associated proteins after I/R, suggesting that Sal effectively inhibited ER stress, apoptosis, and COX-2. Pretreatment with NS398 blocked I/R or OGD/R-induced upregulation of COX-2, Cleaved caspase 3, and ER stress-related marker proteins. CONCLUSIONS Interaction of COX-2 and ER stress regulates apoptosis and contributes to Myocardial lesion induced by I/R.
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Affiliation(s)
- Wenhui Tao
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Lingui Li
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Junkai Hu
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Shangxian Xu
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
| | - Biying Wang
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
| | - Jun Ding
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
| | - Mian Zhang
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Xiaowen Meng
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Xiang Wei
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
| | - Xisheng Shan
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Ke Peng
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Huayue Liu
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
| | - Fuhai Ji
- Department of Anesthesiology, First Affiliated Hospital of Soochow UniversitySuzhou, Jiangsu, China
- Institute of Anesthesiology, Soochow UniversitySuzhou, Jiangsu, China
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11
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Wang L, Wang S, Jia T, Sun X, Xing Z, Liu H, Yao J, Chen Y. Dexmedetomidine prevents cardiomyocytes from hypoxia/reoxygenation injury via modulating tetmethylcytosine dioxygenase 1-mediated DNA demethylation of Sirtuin1. Bioengineered 2022; 13:9369-9386. [PMID: 35387565 PMCID: PMC9161963 DOI: 10.1080/21655979.2022.2054762] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Myocardial hypoxia/reoxygenation (H/R) injury is a common pathological change in patients with acute myocardial infarction undergoing reperfusion therapy. Dexmedetomidine (DEX) has been found to substantially improve ischemia-mediated cell damage. Here, we focus on probing the role and mechanism of DEX in ameliorating myocardial H/R injury. Oxygen–glucose deprivation and reoxygenation (OGD/R) were applied to construct the H/R injury model in human myocardial cell lines. After different concentrations of DEX’s treatment, cell counting kit-8 (CCK-8) assay and BrdU assay were employed to test cell viability. The profiles of apoptosis-related proteins Bcl2, Bax, Bad and Caspase3, 8, 9 were determined by Western blot (WB). The expression of inflammatory factors interleukin 1β (IL-1β) and tumor necrosis factor-α (TNF-α) was checked by reverse transcription-polymerase chain reaction (RT-PCR). By conducting WB, we examined the expression of NF-κB, Sirt1, Tet methylcytosine dioxygenase 1 (TET1) and DNA methylation-related proteins (DNA methyltransferase 1, DNMT1; DNA methyltransferase 3 alpha, DNMT3A; and DNA methyltransferase 3 beta, DNMT3B). Our data showed that OGD/R stimulation distinctly hampered the viability and elevated apoptosis and inflammatory factor expression in cardiomyocytes. DEX treatment notably impeded myocardial apoptosis and inflammation and enhanced cardiomyocyte viability. OGD/R enhanced total DNA methylation levels in cardiomyocytes, while DEX curbed DNA methylation. In terms of mechanism, inhibiting TET1 or Sirtuin1 (Sirt1) curbed the DEX-mediated myocardial protection. TET1 strengthened demethylation of the Sirt1 promoter and up-regulated Sirt1. DEX up-regulates Sirt1 by accelerating TET1 and mediating demethylation of the Sirt1 promoter and improves H/R-mediated myocardial injury.
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Affiliation(s)
- Li Wang
- Department of Anesthesiology. First Affiliated Hospital of Hebei North College, Zhangjiakou, China
| | - Shaowei Wang
- Department of Anesthesiology. First Affiliated Hospital of Hebei North College, Zhangjiakou, China
| | - Tong Jia
- Department of Anesthesiology. First Affiliated Hospital of Hebei North College, Zhangjiakou, China
| | - Xiaojia Sun
- Department of Anesthesiology. First Affiliated Hospital of Hebei North College, Zhangjiakou, China
| | - Zhen Xing
- Department of Anesthesiology. First Affiliated Hospital of Hebei North College, Zhangjiakou, China
| | - Hui Liu
- Department of Anesthesiology. First Affiliated Hospital of Hebei North College, Zhangjiakou, China
| | - Jie Yao
- Department of Anesthesiology. First Affiliated Hospital of Hebei North College, Zhangjiakou, China
| | - Yanlin Chen
- Department of Anesthesiology. First Affiliated Hospital of Hebei North College, Zhangjiakou, China
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12
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Peng K, Shen YP, Ying YY, Kiaii B, Rodriguez V, Boyd D, Applegate RL, Lubarsky DA, Zhang Z, Xia Z, Feng XM, Yang JP, Liu H, Ji FH. Perioperative dexmedetomidine and 5-year survival in patients undergoing cardiac surgery. Br J Anaesth 2021; 127:215-223. [PMID: 34082896 DOI: 10.1016/j.bja.2021.03.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 03/08/2021] [Accepted: 03/31/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Dexmedetomidine sedation has been associated with favourable outcomes after surgery. We aimed to assess whether perioperative dexmedetomidine use is associated with improved survival after cardiac surgery. METHODS This retrospective cohort study included 2068 patients undergoing on-pump coronary artery bypass grafting and/or valve surgery. Among them, 1029 patients received dexmedetomidine, and 1039 patients did not. Intravenous dexmedetomidine infusion of 0.007 μg kg-1 min-1 was initiated before or immediately after cardiopulmonary bypass and lasted for < 24 h. The primary outcome was 5-year survival after cardiac surgery. The propensity scores matching (PSM), inverse probability of treatment weighting (IPTW), and overlap weighting approaches were used to minimise bias. Survival analyses were performed with Cox proportional-hazard models. RESULTS The median age was 63 yr old and the male to female ratio was 71:29 in both groups. Baseline covariates were balanced between groups after adjustment using PSM, IPTW, or overlap weighting. Patients receiving dexmedetomidine in cardiac surgical procedures had higher survival during postoperative 5 yr in unadjusted analysis (hazard ratio [HR]=0.63; 95% confidence interval [CI], 0.51-0.78; P<0.001), and after adjustment with PSM (HR=0.63; 95% CI, 0.45-0.89; P=0.009), IPTW (HR=0.70; 95% CI, 0.51-0.95; P=0.023), or overlap weighting (HR=0.67; 95% CI, 0.51-0.89; P=0.006). The 5-yr mortality rate after cardiac surgery was 13% and 20% in the dexmedetomidine and non-dexmedetomidine groups, respectively (PSM adjusted odds ratio=0.61; 95% CI, 0.42-0.89; P=0.010). CONCLUSION Perioperative dexmedetomidine infusion was associated with improved 5-yr survival in patients undergoing cardiac surgery.
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Affiliation(s)
- Ke Peng
- Department of Anaesthesiology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China; Department of Anaesthesiology and Pain Medicine, University of California Davis Health, Sacramento, CA, USA
| | - Yue-Ping Shen
- Department of Epidemiology and Biostatistics, School of Public Health, Medical College of Soochow University, Suzhou, Jiangsu, China
| | - Yao-Yu Ying
- Department of Epidemiology and Biostatistics, School of Public Health, Medical College of Soochow University, Suzhou, Jiangsu, China
| | - Bob Kiaii
- Department of Cardiothoracic Surgery, University of California Davis Health, Sacramento, CA, USA
| | - Victor Rodriguez
- Department of Cardiothoracic Surgery, University of California Davis Health, Sacramento, CA, USA
| | - Douglas Boyd
- Department of Cardiothoracic Surgery, University of California Davis Health, Sacramento, CA, USA
| | - Richard L Applegate
- Department of Anaesthesiology and Pain Medicine, University of California Davis Health, Sacramento, CA, USA
| | - David A Lubarsky
- Department of Anaesthesiology and Pain Medicine, University of California Davis Health, Sacramento, CA, USA
| | - Zugui Zhang
- Value Institute, Christiana Care Health System, Newark, DE, USA
| | - Zhengyuan Xia
- Department of Anaesthesiology and Pain Medicine, University of California Davis Health, Sacramento, CA, USA; Department of Anaesthesiology, University of Hong Kong, Hong Kong, China
| | - Xiao-Mei Feng
- Department of Anaesthesiology, University of Utah Health, Salt Lake City, UT, USA
| | - Jian-Ping Yang
- Department of Anaesthesiology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Hong Liu
- Department of Anaesthesiology and Pain Medicine, University of California Davis Health, Sacramento, CA, USA.
| | - Fu-Hai Ji
- Department of Anaesthesiology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China.
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13
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Xiao Y, Li J, Qiu L, Jiang C, Huang Y, Liu J, Sun Q, Hong H, Ye L. Dexmedetomidine Protects Human Cardiomyocytes Against Ischemia-Reperfusion Injury Through α2-Adrenergic Receptor/AMPK-Dependent Autophagy. Front Pharmacol 2021; 12:615424. [PMID: 34093174 PMCID: PMC8176440 DOI: 10.3389/fphar.2021.615424] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 05/05/2021] [Indexed: 12/15/2022] Open
Abstract
Background: Ischemia-reperfusion injury (I/R) strongly affects the prognosis of children with complicated congenital heart diseases (CHDs) who undergo long-term cardiac surgical processes. Recently, the α2-adrenergic receptor agonist Dexmedetomidine (Dex) has been reported to protect cardiomyocytes (CMs) from I/R in cellular models and adult rodent models. However, whether and how Dex may protect human CMs in young children remains largely unknown. Methods and Results: Human ventricular tissue from tetralogy of Fallot (TOF) patients and CMs derived from human-induced pluripotent stem cells (iPSC-CMs) were used to assess whether and how Dex protects human CMs from I/R. The results showed that when pretreated with Dex, the apoptosis marker-TUNEL and cleaved caspase 3 in the ventricular tissue were significantly reduced. In addition, the autophagy marker LC3II was significantly increased compared with that of the control group. When exposed to the hypoxia/reoxygenation process, iPSC-CMs pretreated with Dex also showed reduced TUNEL and cleaved caspase 3 and increased LC3II. When the autophagy inhibitor (3-methyladenine, 3-MA) was applied to the iPSC-CMs, the protective effect of Dex on the CMs was largely blocked. In addition, when the fusion of autophagosomes with lysosomes was blocked by Bafilomycin A1, the degradation of p62 induced by Dex during the autophagy process was suspended. Moreover, when pretreated with Dex, both the human ventricle and the iPSC-CMs expressed more AMP-activated protein kinase (AMPK) and phospho AMPK (pAMPK) during the I/R process. After AMPK knockout or the use of an α2-adrenergic receptor antagonist-yohimbine, the protection of Dex and its enhancement of autophagy were inhibited. Conclusion: Dex protects young human CMs from I/R injury, and α2-adrenergic receptor/AMPK-dependent autophagy plays an important role during this process. Dex may have a therapeutic effect for children with CHD who undergo long-term cardiac surgical processes.
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Affiliation(s)
- Yingying Xiao
- Department of Thoracic and Cardiovascular Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Junpeng Li
- Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo, China
| | - Lisheng Qiu
- Department of Thoracic and Cardiovascular Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Chuan Jiang
- Department of Thoracic and Cardiovascular Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,Shanghai Institute for Pediatric Congenital Heart Disease, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Yanhui Huang
- Department of Anesthesiology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jinfen Liu
- Department of Thoracic and Cardiovascular Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Qi Sun
- Department of Thoracic and Cardiovascular Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Haifa Hong
- Department of Thoracic and Cardiovascular Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Lincai Ye
- Department of Thoracic and Cardiovascular Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,Shanghai Institute for Pediatric Congenital Heart Disease, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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14
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New mechanisms uncovered for the cardioprotective effects of dexmedetomidine. Int J Cardiol 2021; 336:97. [PMID: 33933508 DOI: 10.1016/j.ijcard.2021.04.059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 04/26/2021] [Indexed: 11/21/2022]
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15
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Yang YF, Wang H, Song N, Jiang YH, Zhang J, Meng XW, Feng XM, Liu H, Peng K, Ji FH. Dexmedetomidine Attenuates Ischemia/Reperfusion-Induced Myocardial Inflammation and Apoptosis Through Inhibiting Endoplasmic Reticulum Stress Signaling. J Inflamm Res 2021; 14:1217-1233. [PMID: 33833544 PMCID: PMC8020464 DOI: 10.2147/jir.s292263] [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: 11/18/2020] [Accepted: 03/16/2021] [Indexed: 12/12/2022] Open
Abstract
Background Endoplasmic reticulum stress (ERS)-mediated myocardial inflammation and apoptosis plays an important role in myocardial ischemia/reperfusion (I/R) injury. Dexmedetomidine has been used clinically with sedative, analgesic, and anti-inflammatory properties. This study aimed to determine the effects of dexmedetomidine pretreatment on inflammation, apoptosis, and the expression of ERS signaling during myocardial I/R injury. Methods Rats underwent myocardial ischemia for 30 min and reperfusion for 6 h, and H9c2 cardiomyocytes were subjected to oxygen-glucose deprivation/reoxygenation (OGD/R) injury (OGD for 12 h and reoxygenation for 3 h). Dexmedetomidine was administered prior to myocardial ischemia in rats or ODG in cardiomyocytes. In addition, the α2-adrenergic receptor antagonist (yohimbine) or the PERK activator (CCT020312) was given prior to dexmedetomidine treatment. Results Dexmedetomidine pretreatment decreased serum levels of cardiac troponin I, reduced myocardial infarct size, alleviated histological structure damage, and improved left ventricular function following myocardial I/R injury in rats. In addition, dexmedetomidine pretreatment increased cell viability and reduced cytotoxicity following OGD/R injury in cardiomyocytes. Mechanistically, the cardioprotection offered by dexmedetomidine was mediated via the inhibition of inflammation and apoptosis through downregulating the expression of the ERS signaling pathway, including glucose-regulated protein 78 (GRP78), protein kinase R-like endoplasmic reticulum kinase (PERK), C/EBP homologous protein (CHOP), inositol-requiring protein 1 (IRE1), and activating transcription factor 6 (ATF6). Conversely, the protective effects of dexmedetomidine were diminished by blocking the α2 adrenergic receptors with yohimbine or promoting PERK phosphorylation with CCT020312. Conclusion Dexmedetomidine pretreatment protects the hearts against I/R injury via inhibiting inflammation and apoptosis through downregulation of the ERS signaling pathway. Future clinical studies are needed to confirm the cardioprotective effects of dexmedetomidine in patients at risk of myocardial I/R injury.
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Affiliation(s)
- Yu-Fan Yang
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Hui Wang
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China.,Department of Anesthesiology, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi, Jiangsu, People's Republic of China
| | - Nan Song
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Ya-Hui Jiang
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Jun Zhang
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Xiao-Wen Meng
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Xiao-Mei Feng
- Department of Anesthesiology, University of Utah Health, Salt Lake City, UT, USA.,Transitional Residency Program, Intermountain Medical Center, Murray, UT, USA
| | - Hong Liu
- Department of Anesthesiology and Pain Medicine, University of California Davis Health, Sacramento, CA, USA
| | - Ke Peng
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Fu-Hai Ji
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China
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16
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Zhang Y, Zhao Q, Li X, Ji F. Dexmedetomidine reversed hypoxia/reoxygenation injury-induced oxidative stress and endoplasmic reticulum stress-dependent apoptosis of cardiomyocytes via SIRT1/CHOP signaling pathway. Mol Cell Biochem 2021; 476:2803-2812. [PMID: 33725228 DOI: 10.1007/s11010-021-04102-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 12/02/2020] [Indexed: 01/04/2023]
Abstract
We aimed to investigate the protective role and mechanism of dexmedetomidine (DEX) on H9c2 cardiomyocytes after hypoxia/reoxygenation (H/R) injury. Six experimental groups were designed as follows: normal control group (group C), H/R group, H/R + DEX group, H/R + gastrodin group, H/R + Ex527 (SIRT1 inhibitor) group, and H/R + DEX + Ex527 group. Lactate dehydrogenase (LDH) activity and the levels of oxidative stress-related enzymes such as malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT) and glutathione (GSH) were measured using corresponding commercial kits. Cell counting kit (CCK)-8 assay was used to detect cell survival rate while flow cytometry and caspase 3/7 activity were used to determine cell apoptosis, respectively. Western blot was used to detect the expression of silent information regulator 1 (SIRT1), C/EBP homologous protein (CHOP), cleaved-caspase-12/3 and pro-caspase-12/3 in each group. From our findings, when compared with H/R, H/R + Ex527 and H/R + DEX + Ex527 groups, DEX pretreatment of cells in H/R + DEX group significantly increased cell survival rate, and simultaneously reduced LDH activity, oxidative stress and the apoptosis rate of H9c2 cells with H/R injury. Moreover, DEX up-regulated SIRT1 expression level and down-regulated the levels of endoplasmic reticulum (ER) stress-related markers such as CHOP, cleaved-caspase-12 and cleaved-caspase-3, respectively. Ex527 could completely block DEX-induced upregulated expression of SIRT1, and partially blocked the DEX-induced downregulated expression levels of CHOP, cleaved-caspase-12 and cleaved-caspase-3. These results proved that DEX reversed H/R injury-induced oxidative stress and ER stress-dependent apoptosis of cardiomyocytes via SIRT1/CHOP signaling pathway.
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Affiliation(s)
- Ying Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Soochow University, No. 899 Pinghai Road, Suzhou, 215006, Jiangsu Province, China.,Department of Anesthesiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233004, China
| | - Qihong Zhao
- Department of Anesthesiology, The Second Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Xiaohong Li
- Department of Anesthesiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233004, China
| | - Fuhai Ji
- Department of Anesthesiology, The First Affiliated Hospital of Soochow University, No. 899 Pinghai Road, Suzhou, 215006, Jiangsu Province, China.
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17
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Zheng X, Li J, Fan Q, Zhao X, Chen K. Dexmedetomidine alleviates myocardial ischemia/reperfusion-induced injury and Ca 2+ overload via the microRNA-346-3p/CaMKIId axis. Int J Cardiol 2021; 338:185-195. [PMID: 33731281 DOI: 10.1016/j.ijcard.2021.03.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 03/04/2021] [Accepted: 03/08/2021] [Indexed: 12/12/2022]
Abstract
Myocardial ischemia/reperfusion (MI/R) may impair cardiac functions. Dexmedetomidine (DEX) is protective in various clinical cases. Therefore, this study investigated the role and mechanism of DEX in MI/R. The myocardial infarct size, apoptosis, and levels of myocardial enzymes, SOD, ROS, Ca2+, and inflammatory factors in DEX-treated MI/R rats were measured. Differentially expressed microRNAs (miRs) in DEX-treated MI/R rats were detected. miR-346-3p was intervened to assess the effects of DEX on MI/R rats. The targeted binding relationship between miR-346-3p and CaMKIId was predicted and verified. DEX effect on hypoxia/reoxygenation (H/R)-induced cell model was evaluated. The role of CaMKIId in DEX protection was assessed after CaMKIId overexpression in H/R cells. NF-κB pathway and NLRP3 inflammasome-related protein levels were detected. DEX alleviated the myocardial injury and Ca2+ overload in MI/R rats, as evidenced by reduced infarct size, apoptosis and levels of myocardial enzymes, ROS, Ca2+, and inflammatory factors. DEX promoted miR-346-3p expression in MI/R rats, and miR-346-3p knockdown reversed DEX protection on MI/R rats. miR-346-3p targeted CaMKIId. DEX improved H/R-induced cell injury and Ca2+ overload and inhibited NF-κB/NLRP3 inflammasome-related protein levels, which were all reversed by CaMKIId overexpression. DEX alleviated injury and Ca2+ overload in MI/R via regulating the miR-346-3p/CaMKIId axis and inhibiting the NF-κB/NLRP3 inflammasome pathway.
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Affiliation(s)
- Xuwei Zheng
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe Road, Erqi District, Zhengzhou 450000, Henan, China.
| | - Jianxiu Li
- Disinfection and supply room, Weifang Yidu Central Hospital, No. 4138, Linglongshan South Road, Qingzhou 262500, Shandong, China
| | - Qian Fan
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart Lung and Blood Vessel Diseases, Capital Medical University, 2 Anzhen Road, Chaoyang District, Beijing 100029, China
| | - Xiaoyan Zhao
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe Road, Erqi District, Zhengzhou 450000, Henan, China
| | - Kui Chen
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe Road, Erqi District, Zhengzhou 450000, Henan, China
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18
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Shao Q, Xia J, Wu P, Ying J. Dexmedetomidine protects cardiac microvascular endothelial cells from the damage of ogd/r through regulation of the pparδ-mediated autophagy. Microcirculation 2021; 28:e12675. [PMID: 33377581 DOI: 10.1111/micc.12675] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 12/23/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Dexmedetomidine (Dex) exerts an effective therapeutic role in numerous diseases associated with ischemia/reperfusion (I/R) injury via its anti-apoptosis properties. Therefore, this study explores the cardioprotective effects of Dex in cardiac microvascular endothelial cells (CMECs) in response to oxygen-glucose deprivation and re-oxygenation (OGD/R) injury and its potential mechanism. MATERIAL AND METHODS CMECs were pretreatment with different concentration of Dex, then exposed to OGD/R. Cell viability was measured with CCK-8 assay. Apoptosis was evaluated by flow cytometry, and apoptosis-related protein was determined by Western blot. Autophagy was assessed by transmission electron microscopy and autophagy-related proteins. Besides, the role peroxisome proliferator-activated receptors (PPARδ) in Dex-mediated anti-apoptosis property was validated with agonist and antagonist. RESULTS OGD/R significantly decreased cell viability, increased reactive oxygen species, caused disorder of autophagy, and increased apoptosis in CMECs. Dex enhanced the viability of the OGD/R-treated CMECs and effectively decreased reactive oxygen species production. Autophagy in CMECs was activated by Dex, as evidenced by the increase in the ratio of LC3B-II/I, expression level of Beclin1 and number of autophagosomes in the OGD/R-induced CMECs. The mechanistic investigation indicated that PPARδ antagonist GW501516 aggravated cell damage following OGD/R, while PPARδ agonist GW6471 partly abolished the Dex-mediated protective effects. CONCLUSIONS Dex activated the PPARδ-AMPK-PGC-1α pathway-mediated autophagy in CMECs, therefore to inhibit excessive apoptosis induced by OGD/R. Dex may potentially be a therapeutic intervention for myocardial I/R injury.
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Affiliation(s)
- Qingbo Shao
- Department of Anesthesiology, Minhang Branch, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jing Xia
- Shanghai International Travel Healthcare Center, Shanghai, China
| | - Pinwen Wu
- Department of Anesthesiology, Minhang Branch, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jiazhou Ying
- Department of Anesthesiology, Minhang Branch, Zhongshan Hospital, Fudan University, Shanghai, China
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19
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Liu Z, Zhang Y, Pan S, Qiu C, Jia H, Wang Y, Zhu H. Activation of RAGE-dependent endoplasmic reticulum stress associates with exacerbated postmyocardial infarction ventricular arrhythmias in diabetes. Am J Physiol Endocrinol Metab 2021; 320:E539-E550. [PMID: 33459180 DOI: 10.1152/ajpendo.00450.2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Association between receptor for advanced glycation end products (RAGE) and postmyocardial infarction (MI) ventricular arrhythmias (VAs) in diabetes was investigated. Correlation between premature ventricular contractions (PVCs) and serum advanced glycation end products (AGEs) content was analyzed in a cohort consisting of 101 patients with ST-segment elevated MI (STEMI). MI diabetic rats were treated with anti-receptor for AGE (RAGE) antibody. Electrocardiography was used to record VAs. Myocytes were isolated from adjacent area around infracted region. Immunofluorescent stains were used to evaluate the association between FKBP12.6 (FK506-bindingprotein 12.6) and ryanodine receptor 2 (RyR2). Calcium sparks were evaluated by confocal microscope. Protein expression and phosphorylation were assessed by Western blotting. Calcineurin (CaN) enzymatic activity and RyR2 channel activity were also determined. In the cohort study, significantly increased amount of PVC was found in STEMI patients with diabetes (P < 0.05). Serum AGE concentration was significantly positively correlated with PVC amount in patients with STEMI (r = 0.416, P < 0.001). Multivariate analysis showed that serum AGE concentration was independently and positively related to frequent PVCs (adjusted hazard ratio, 1.86; 95% CI, 1.09-3.18, P = 0.022). In the animal study, increased glucose-regulated protein 78 (GRP78) expression, protein kinase RNA-like ER kinase (PERK) phosphorylation, CaN enzymatic activity, FKBP12.6-RyR2 disassociation, RyR2 channel opening, and endoplasmic reticulum (ER) calcium releasing were found in diabetic MI animals, which were attenuated by anti-RAGE antibody treatment. This RAGE blocking also significantly lowered the VA amount in diabetic MI animals. Activation of RAGE-dependent ER stress-mediated PERK/CaN/RyR2 signaling participated in post-MI VAs in diabetes.NEW & NOTEWORTHY In this study, we proposed a possible mechanism interpreting the clinical scenario that after myocardial infarction (MI) patients were more vulnerable to ventricular arrhythmias (VAs) when complicated with diabetes. A cohort study revealed that advanced glycation end products (AGEs) accumulated in patients with diabetes and closely associated post-MI VAs. In vivo and in vitro studies indicated that receptor for AGEs (RAGE)-dependent endoplasmic reticulum (ER) stress protein kinase RNA-like ER kinase (PERK) pathway triggered VAs, via ER calcium releasing, through calcineurin/RyR2 mechanism.
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Affiliation(s)
- Zhongwei Liu
- Department of Cardiology, Affiliated Shaanxi Provincial People's Hospital, Northwestern Polytechnical University, Xi'an, People's Republic of China
| | - Yong Zhang
- Department of Cardiology, Affiliated Shaanxi Provincial People's Hospital, Northwestern Polytechnical University, Xi'an, People's Republic of China
| | - Shuo Pan
- Department of Cardiology, Affiliated Shaanxi Provincial People's Hospital, Northwestern Polytechnical University, Xi'an, People's Republic of China
| | - Chuan Qiu
- Department of Global Biostatistics and Data Science, School of Public Health and Tropical Medicine, Center for Bioinformatics and Genomics, Tulane University, New Orleans, Louisiana
| | - Hao Jia
- International Medical Services, Affiliated Hospital of Northwest University, Northwest University, Xi'an, People's Republic of China
| | - Yuan Wang
- Department of Medical Prevention, Affiliated Shaanxi Provincial People's Hospital, Northwestern Polytechnical University, Xi'an, People's Republic of China
| | - Haitao Zhu
- Department of Pediatrics, Northwest Women's and Children's Hospital, Xi'an, People's Republic of China
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20
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Zhu Z, Ling X, Zhou H, Zhang C. Dexmedetomidine at a dose of 1 µM attenuates H9c2 cardiomyocyte injury under 3 h of hypoxia exposure and 3 h of reoxygenation through the inhibition of endoplasmic reticulum stress. Exp Ther Med 2020; 21:132. [PMID: 33376514 PMCID: PMC7751463 DOI: 10.3892/etm.2020.9564] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/20/2020] [Indexed: 12/11/2022] Open
Abstract
Myocardial ischemia-reperfusion injury (MIRI) has been confirmed to induce endoplasmic reticulum stress (ERS) during downstream cascade reactions after the sufficient deterioration of cardiomyocyte function. However, clinically outcomes have been inconsistent with experimental findings because the mechanism has not been entirely elucidated. Dexmedetomidine (DEX), an α2 adrenergic receptor agonist with anti-inflammatory and organ-protective activity, has been shown to attenuate IRI in the heart. The present study aimed to determine whether DEX is able to protect injured cardiomyocytes under in vitro hypoxia/reoxygenation (H/R) conditions and evaluate the conditions under which ERS is efficiently ameliorated. The cytotoxicity of DEX in H9c2 cells was evaluated 24 h after treatment with several different concentrations of DEX. The most appropriate H/R model parameters were determined by the assessment of cell viability and injury with Cell Counting Kit-8 and lactate dehydrogenase (LDH) release assays after incubation under hypoxic conditions for 3 h and reoxygenation conditions for 3, 6, 12 and 24 h. Additionally, the aforementioned methods were used to assess cardiomyocytes cultured with various concentrations of DEX under H/R conditions. Furthermore, the degree of apoptosis and the mRNA and protein expression levels of glucose-regulated protein 78 (GRP78), C/EBP homologous protein (CHOP) and caspase-12 were evaluated in all groups. The addition of 1, 5 and 10 µM DEX to the cell culture significantly increased the proliferation of H9c2 cells by >80% under normal culture conditions. In the H/R model assessment, following 3 h of anoxia exposure, H9c2 cell viability decreased to 62.67% with 3 h of reoxygenation and to 36% with 6 h of reoxygenation compared with the control. The viability of H9c2 cells subjected to hypoxia for 3 h and reoxygenation for 3 h increased by 61.3% when pretreated with 1 µM DEX, and the LDH concentration in the supernatant was effectively decreased by 13.7%. H/R significantly increased the percentage of apoptotic cells, as detected by flow cytometry, and increased the expression levels of GRP78, CHOP and caspase-12, while treatment with either DEX or 4-phenylbutyric acid (4-PBA) significantly attenuated these effects. Additionally, despite the protective effect of DEX against H/R injury, 4-PBA attenuated the changes induced by DEX and H/R. In conclusion, treatment with 1 µM DEX alleviated cell injury, apoptosis and the increases in GRP78, CHOP and caspase-12 expression levels in H9c2 cells induced by 3 h of hypoxia and 3 h of reoxygenation.
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Affiliation(s)
- Zhipeng Zhu
- Department of Anesthesiology, The Second Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang 314000, P.R. China
| | - Xiaoyan Ling
- Outpatient Nursing Department, The Second Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang 314000, P.R. China
| | - Hongmei Zhou
- Department of Anesthesiology, The Second Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang 314000, P.R. China
| | - Caijun Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang 314000, P.R. China
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21
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Zhu Z, Ling X, Zhou H, Zhang C, Yan W. Dexmedetomidine Attenuates Cellular Injury and Apoptosis in H9c2 Cardiomyocytes by Regulating p-38MAPK and Endoplasmic Reticulum Stress. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:4231-4243. [PMID: 33116411 PMCID: PMC7568428 DOI: 10.2147/dddt.s265970] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 09/19/2020] [Indexed: 12/18/2022]
Abstract
Background Myocardial ischaemia-reperfusion injury (IRI) has been confirmed to induce endoplasmic reticulum stress (ERS) when myocardial cell function continues to deteriorate to a certain degree. The clinical applications of effective tested strategies are sometimes inconsistent with the applications evaluated in experiments, although reasonable mechanisms and diverse signalling pathways have been broadly explored. Dexmedetomidine (DEX) has been shown to attenuate IRI of the heart in animal studies. This study aimed to determine whether DEX can protect injured cardiomyocytes under hypoxia/reoxygenation (H/R) at the cellular level and whether the mechanism is related to ERS and the p38 MAPK pathway. Methods H9c2 cells were subjected to H/R or thapsigargin (TG) to build a model. DEX or 4-PBA was added to the medium either 1 h or 24 h before modelling, respectively. Model parameters were determined by assessing cell viability and injury, which were measured by assessing cell counting kit-8 (CCK8), lactate dehydrogenase (LDH) release and flow cytometry results, and the expression of GRP78, CHOP and caspase-12. In addition, the protein expression of p38MAPK and p-p38MAPK was examined, and SB202190, a negative regulator, was also preincubated in medium. Results Compared to that of cells in the control group, the activity of cells in the H/R and TG groups was decreased dramatically, and the LDH concentration and proportion of apoptotic cells were increased. DEX could correspondingly reverse the changes induced by H/R or TG. Additionally, DEX effectively attenuated ERS defined as increased expression of GRP78, CHOP and caspase-12. Additionally, DEX could obviously depress the P38 MAPK phosphorylation and high p-p38 MAPK expression in the TG group, indicating DEX has a function similar to that of SB202190. Conclusion H/R injury in H9c2 cells can lead to abnormal ERS and apoptosis, as well as activation of the p38MAPK signalling pathway. DEX can protect cardiomyocytes by intervening in ERS, regulating p38MAPK and the downstream apoptotic signalling pathway.
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Affiliation(s)
- Zhipeng Zhu
- Department of Anesthesiology, The Second Affiliated Hospital of Jiaxing University, Jiaxing City, Zhejiang Province 314000, People's Republic of China
| | - Xiaoyan Ling
- The Outpatient Nursing Department of the Second Affiliated Hospital of Jiaxing University, Jiaxing City, Zhejiang Province 314000, People's Republic of China
| | - Hongmei Zhou
- Department of Anesthesiology, The Second Affiliated Hospital of Jiaxing University, Jiaxing City, Zhejiang Province 314000, People's Republic of China
| | - Caijun Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Jiaxing University, Jiaxing City, Zhejiang Province 314000, People's Republic of China
| | - Weiwei Yan
- Department of Anesthesiology, The Second Affiliated Hospital of Jiaxing University, Jiaxing City, Zhejiang Province 314000, People's Republic of China
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22
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Peng K, Liu H, Yan B, Meng XW, Song SY, Ji FH, Xia Z. Inhibition of cathepsin S attenuates myocardial ischemia/reperfusion injury by suppressing inflammation and apoptosis. J Cell Physiol 2020; 236:1309-1320. [PMID: 32657442 DOI: 10.1002/jcp.29938] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 06/16/2020] [Accepted: 07/02/2020] [Indexed: 12/17/2022]
Abstract
Myocardial ischemia/reperfusion (I/R) injury leads to high mortality and morbidity due to the incomplete understanding of the underlying mechanism and the consequent lack of effective therapy. The present study revealed and validated key candidate genes in relation to inflammation and apoptosis pathways underlying myocardial I/R injury. Cathepsin S was identified as the top hub protein based on the protein-protein interaction analysis, and, thus, its role during myocardial I/R injury was further investigated. Myocardial I/R in mice resulted in significantly increased levels of myocardial injury biomarkers (cardiac troponin I, lactic dehydrogenase, and creatinine kinase-MB) and inflammatory cytokines (interleukin-1β [IL-1β], IL-6, and tumor necrosis factor-α), elevated apoptosis rate, and upregulated protein expression of cleaved caspase-8, cleaved caspase-3, and cleaved poly ADP-ribose polymerase. These abovementioned changes were blocked by two different selective cathepsin S inhibitors, LY3000328 or MIV-247. Moreover, Kaplan-Meier survival plot showed that cathepsin S inhibition improved 21-day survival rate following myocardial I/R injury. This study demonstrated that the inhibition of cathepsin S alleviated myocardial I/R-induced injury by suppressing inflammation and apoptosis, which may be used in clinical applications of cardioprotection.
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Affiliation(s)
- Ke Peng
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Hong Liu
- Department of Anesthesiology and Pain Medicine, University of California Davis Health, Sacramento, California
| | - Bin Yan
- Department of Intervention and Cell Therapy, Peking University Shenzhen Hospital, Shenzhen, China.,Department of Computer Science, The University of Hong Kong, Pokfulam, Hong Kong
| | - Xiao-Wen Meng
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Shao-Yong Song
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Fu-Hai Ji
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhengyuan Xia
- Department of Anesthesiology and Pain Medicine, University of California Davis Health, Sacramento, California.,Department of Anesthesiology, The University of Hong Kong, Pokfulam, Hong Kong
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Zhang W, Yu J, Guo M, Ren B, Tian Y, Hu Q, Xie Q, Xu C, Feng Z. Dexmedetomidine Attenuates Glutamate-Induced Cytotoxicity by Inhibiting the Mitochondrial-Mediated Apoptotic Pathway. Med Sci Monit 2020; 26:e922139. [PMID: 32419697 PMCID: PMC7251967 DOI: 10.12659/msm.922139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background Glutamate (GLU) is the most excitatory amino acid in the central nervous system and plays an important role in maintaining the normal function of the nervous system. During cerebral ischemia, massive release of GLU leads to neuronal necrosis and apoptosis. It has been reported that dexmedetomidine (DEX) possesses anti-oxidant and anti-apoptotic properties. The objective of this study was to investigate the effects of DEX on GLU-induced neurotoxicity in PC12 cells. Material/Methods PC12 cells were treated with 20 mM GLU to establish an ischemia-induced injury model. Cell viability was accessed by MTT assay. MDA content and SOD activity were analyzed by assay kits. Apoptosis rate, ROS production, intracellular Ca2+ concentration, and MMP were evaluated by flow cytometry. Western blot analysis was performed to analyze expressions of caspase-3, caspase-9, cyt-c, bax, and bcl-2. Results PC12 cells treated with GLU exhibited reduced cell viability and increased apoptosis rates, which were ameliorated by pretreatment with DEX. DEX significantly increased SOD activity, reduced content of MDA, and decreased production of ROS in PC12 cells. In addition, DEX clearly reduced the level of intracellular Ca2+ and attenuated the decline of MMP. Moreover, DEX notably reduced expressions of caspase-3, caspase-9, cyt-c, and bax and increased expression of bcl-2. Conclusions Our findings suggest that DEX can protect PC12 cells against GLU-induced cytotoxicity, which may be attributed to its anti-oxidative property and reduction of intracellular calcium overload, as well as its ability to inhibit the mitochondria-mediated apoptotic pathway.
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Affiliation(s)
- Weidong Zhang
- Anesthesia and Operation Center, The First Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China (mainland).,Anesthesia and Operation Center, The Fifth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Jun Yu
- Department of Anesthesiology, The Fourth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Mengzhuo Guo
- Department of Anesthesiology, Beijing Tsinghua Changung Hospital, Beijing, China (mainland)
| | - Bo Ren
- Anesthesia and Operation Center, The Fifth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Yanyan Tian
- Department of Anesthesiology, Air Force Characteristic Medical Center, Beijing, China (mainland)
| | - Qinggang Hu
- Department of Anesthesiology, The Fourth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Qun Xie
- Department of Anesthesiology, The Fourth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Chen Xu
- Anesthesia and Operation Center, The Fifth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Zeguo Feng
- Anesthesia and Operation Center, The First Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
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24
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Li R, Zhao K, Ruan Q, Meng C, Yin F. The transcription factor Foxd3 induces spinal cord ischemia-reperfusion injury by potentiating microRNA-214-dependent inhibition of Kcnk2. Exp Mol Med 2020; 52:118-129. [PMID: 31959866 PMCID: PMC7000395 DOI: 10.1038/s12276-019-0370-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 11/19/2019] [Accepted: 12/10/2019] [Indexed: 11/14/2022] Open
Abstract
Spinal cord injury after surgical repair of the thoracic or thoracoabdominal aorta is a devastating complication that is associated with pathological changes, including inflammation, edema, and nerve cell damage. Recently, microRNA (miRNA)-modulated control of spinal cord injury has been actively investigated. This study aims to clarify the regulatory effect of miR-214-mediated inhibition of Kcnk2 following spinal cord ischemia-reperfusion injury (SCII) and the possible underlying mechanisms. SCII was induced in rats by occluding the aortic arch followed by reperfusion. Gain-of-function and loss-of-function experiments were conducted to explore the modulatory effects of Foxd3, miR-214 and Kcnk2 on PC12 cells under hypoxia/reoxygenation (H/R) conditions. MiR-214 and Kcnk2 were poorly expressed, while Foxd3 was highly expressed in the rat spinal cord tissues and H/R-treated PC12 cells. Kcnk2 overexpression enhanced the viability and inhibited the apoptosis of the H/R-treated PC12 cells. Notably, Foxd3 activated miR-214, and miR-214 targeted Kcnk2. In addition, upregulation of Kcnk2 or knockdown of Foxd3 promoted the cell viability and reduced the apoptosis of the H/R-treated PC12 cells. Overall, our study identified a novel mechanism of Foxd3/miR-214/Kcnk2 involving SCII, suggesting that either Foxd3 or miR-214 may be a novel target for the treatment of SCII.
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Affiliation(s)
- Ran Li
- Department of Spine Surgery, China-Japan Union Hospital, Jilin University, Changchun, 130033, P.R. China
| | - Kunchi Zhao
- Department of Spine Surgery, China-Japan Union Hospital, Jilin University, Changchun, 130033, P.R. China
| | - Qing Ruan
- Department of Spine Surgery, China-Japan Union Hospital, Jilin University, Changchun, 130033, P.R. China
| | - Chunyang Meng
- Department of Spine Surgery, China-Japan Union Hospital, Jilin University, Changchun, 130033, P.R. China
| | - Fei Yin
- Department of Spine Surgery, China-Japan Union Hospital, Jilin University, Changchun, 130033, P.R. China.
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