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Role of Oxidative Stress in Cardiac Dysfunction and Subcellular Defects Due to Ischemia-Reperfusion Injury. Biomedicines 2022; 10:biomedicines10071473. [PMID: 35884777 PMCID: PMC9313001 DOI: 10.3390/biomedicines10071473] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/15/2022] [Accepted: 06/16/2022] [Indexed: 11/17/2022] Open
Abstract
Ischemia-reperfusion (I/R) injury is well-known to be associated with impaired cardiac function, massive arrhythmias, marked alterations in cardiac metabolism and irreversible ultrastructural changes in the heart. Two major mechanisms namely oxidative stress and intracellular Ca2+-overload are considered to explain I/R-induced injury to the heart. However, it is becoming apparent that oxidative stress is the most critical pathogenic factor because it produces myocardial abnormalities directly or indirectly for the occurrence of cardiac damage. Furthermore, I/R injury has been shown to generate oxidative stress by promoting the formation of different reactive oxygen species due to defects in mitochondrial function and depressions in both endogenous antioxidant levels as well as regulatory antioxidative defense systems. It has also been demonstrated to adversely affect a wide variety of metabolic pathways and targets in cardiomyocytes, various resident structures in myocardial interstitium, as well as circulating neutrophils and leukocytes. These I/R-induced alterations in addition to myocardial inflammation may cause cell death, fibrosis, inflammation, Ca2+-handling abnormalities, activation of proteases and phospholipases, as well as subcellular remodeling and depletion of energy stores in the heart. Analysis of results from isolated hearts perfused with or without some antioxidant treatments before subjecting to I/R injury has indicated that cardiac dysfunction is associated with the development of oxidative stress, intracellular Ca2+-overload and protease activation. In addition, changes in the sarcolemma and sarcoplasmic reticulum Ca2+-handling, mitochondrial oxidative phosphorylation as well as myofibrillar Ca2+-ATPase activities in I/R hearts were attenuated by pretreatment with antioxidants. The I/R-induced alterations in cardiac function were simulated upon perfusing the hearts with oxyradical generating system or oxidant. These observations support the view that oxidative stress may be intimately involved in inducing intracellular Ca2+-overload, protease activation, subcellular remodeling, and cardiac dysfunction as a consequence of I/R injury to the heart.
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Lai L, Liu Y, Liu Y, Zhang N, Cao S, Zhang X, Wu D. Role of endoplasmic reticulum oxidase 1α in H9C2 cardiomyocytes following hypoxia/reoxygenation injury. Mol Med Rep 2020; 22:1420-1428. [PMID: 32626998 PMCID: PMC7339728 DOI: 10.3892/mmr.2020.11217] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Accepted: 03/30/2020] [Indexed: 01/04/2023] Open
Abstract
Endoplasmic reticulum (ER) oxidase 1α (ERO1α) is a glycosylated flavoenzyme that is located on the luminal side of the ER membrane, which serves an important role in catalyzing the formation of protein disulfide bonds and ER redox homeostasis. However, the role of ERO1α in myocardial hypoxia/reoxygenation (H/R) injury remains largely unknown. In the present study, ERO1α expression levels in H9C2 cardiomyocytes increased following H/R, reaching their highest levels following 3 h of hypoxia and 6 h of reoxygenation. In addition, H/R induced apoptosis, and significantly increased expression levels of ER stress (ERS) markers 78 kDa glucose-regulated protein and C/EBP homologous protein. Moreover, the genetic knockdown of ERO1α using short hairpin RNA suppressed cell apoptosis, caspase-3 activity, expression levels of cleaved caspase-12 and cytochrome c in the cytoplasm. Overall, this suggested that ERO1α knockdown may protect against H/R injury. The ERS activator tunicamycin (TM) was used to counteract the ERO1α-induced reduction in ERS; however, the percentage of apoptotic cells and the level of mitochondrial damage did not change. In conclusion, the results from the present study suggested that ERO1α knockdown may protect H9C2 cardiomyocytes from H/R injury through inhibiting intracellular ROS production and increasing intracellular levels of Ca2+, suggesting that ERO1α may serve an important role in H/R.
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Affiliation(s)
- Lina Lai
- Department of Pharmacology, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Yue Liu
- Department of Clinical Medicine, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Yuanyuan Liu
- Department of Clinical Medicine, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Ni Zhang
- Department of Clinical Medicine, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Shilu Cao
- Department of Clinical Medicine, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Xiaojing Zhang
- Department of Pharmacology, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Di Wu
- Department of Surgery, University of Virginia, Charlottesville, VA 22908, USA
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Shi X, Tao G, Ji L, Tian G. Sappanone A Protects Against Myocardial Ischemia Reperfusion Injury by Modulation of Nrf2. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:61-71. [PMID: 32021092 PMCID: PMC6955610 DOI: 10.2147/dddt.s230358] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 12/05/2019] [Indexed: 12/27/2022]
Abstract
Background Oxidative stress is a major contributor to the onset and development of myocardial ischemia reperfusion injury (MIRI). Sappanone A (SA), a homoisoflavanone extracted from the heartwood of Caesalpinia sappan L., has been demonstrated to possess powerful antioxidant activity. Therefore, this study aimed to determine the protective effect of SA on MIRI and investigate its underlying mechanism. Methods The rat hearts were isolated and underwent 30-min ischemia, followed by 120-min reperfusion to establish the MIRI model, using the Langendorff method. SA was administrated intraperitoneally into rats 1 h prior to heart isolation. The myocardial infarct size and apoptosis were measured by TTC and terminal deoxynucleotidyl transferase dUTP nick end labeling staining. Myocardial enzyme activity, MDA content and the activities of SOD and GSH-Px were detected by colorimetric spectrophotometric method. Reactive oxygen species (ROS) level was detected by DCFH-DA probe. The change in Keap1/Nrf2 signaling pathway was evaluated by Western blotting. Results SA reduced myocardial infarct size and the release of CK-MB and LDH in a dose-dependent manner. Moreover, SA improved the recovery of cardiac function, inhibited MIRI-induced apoptosis, repressed the production of ROS and MDA, and enhanced the activities of SOD and GSH-Px. Mechanistically, SA downregulated Keap1, induced Nrf2 nuclear accumulation, and enhanced Nrf2 transcriptional activity, subsequently resulting in an increase in the expression of the Nrf2 target genes heme oxygenase-1 and NAD(P)H quinone dehydrogenase 1. Moreover, SA enhanced the phosphorylation of Nfr2, but the enhancement in Nfr2 phosphorylation was abrogated by PKC or PI3K inhibitor. Conclusion Collectively, it was demonstrated that SA prevents MIRI via coordinating the cellular antioxidant defenses and maintaining the redox balance, by modulation of Nrf2 via the PKC or PI3K pathway. Therefore, SA was a potential therapeutic drug for treating MIRI.
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Affiliation(s)
- Xiaojing Shi
- Department of Cardiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, People's Republic of China
| | - Guizhou Tao
- Department of Cardiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, People's Republic of China
| | - Lili Ji
- Department of Cardiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, People's Republic of China
| | - Ge Tian
- Department of Cardiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, People's Republic of China
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Wilson RJ, Drake JC, Cui D, Ritger ML, Guan Y, Call JA, Zhang M, Leitner LM, Gödecke A, Yan Z. Voluntary running protects against neuromuscular dysfunction following hindlimb ischemia-reperfusion in mice. J Appl Physiol (1985) 2019; 126:193-201. [PMID: 30433863 PMCID: PMC6383643 DOI: 10.1152/japplphysiol.00358.2018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 10/31/2018] [Accepted: 10/31/2018] [Indexed: 12/20/2022] Open
Abstract
Ischemia-reperfusion (IR) due to temporary restriction of blood flow causes tissue/organ damages under various disease conditions, including stroke, myocardial infarction, trauma, and orthopedic surgery. In the limbs, IR injury to motor nerves and muscle fibers causes reduced mobility and quality of life. Endurance exercise training has been shown to increase tissue resistance to numerous pathological insults. To elucidate the impact of endurance exercise training on IR injury in skeletal muscle, sedentary and exercise-trained mice (5 wk of voluntary running) were subjected to ischemia by unilateral application of a rubber band tourniquet above the femur for 1 h, followed by reperfusion. IR caused significant muscle injury and denervation at neuromuscular junction (NMJ) as early as 3 h after tourniquet release as well as depressed muscle strength and neuromuscular transmission in sedentary mice. Despite similar degrees of muscle atrophy and oxidative stress, exercise-trained mice had significantly reduced muscle injury and denervation at NMJ with improved regeneration and functional recovery following IR. Together, these data suggest that endurance exercise training preserves motor nerve and myofiber structure and function from IR injury and promote functional regeneration. NEW & NOTEWORTHY This work provides the first evidence that preemptive voluntary wheel running reduces neuromuscular dysfunction following ischemia-reperfusion injury in skeletal muscle. These findings may alter clinical practices in which a tourniquet is used to modulate blood flow.
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Affiliation(s)
- Rebecca J Wilson
- Department of Biochemistry and Molecular Genetics, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
| | - Joshua C Drake
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
| | - Di Cui
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
| | - Matthew L Ritger
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
| | - Yuntian Guan
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
| | - Jarrod A Call
- Department of Kinesiology, University of Georgia , Athens, Georgia
- Regenerative Bioscience Center, University of Georgia , Athens, Georgia
| | - Mei Zhang
- Department of Medicine, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
| | - Lucia M Leitner
- Institute of Cardiovascular Physiology, Heinrich Heine University of Düsseldorf , Düsseldorf , Germany
| | - Axel Gödecke
- Institute of Cardiovascular Physiology, Heinrich Heine University of Düsseldorf , Düsseldorf , Germany
| | - Zhen Yan
- Department of Medicine, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
- Department of Pharmacology, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
- Department of Molecular Physiology and Biological Physics, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
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Zhao C, Jiang J, Wang Y, Wu Y. Retracted
: Overexpression of microRNA‐590‐3p promotes the proliferation of and inhibits the apoptosis of myocardial cells through inhibition of the NF‐κB signaling pathway by binding to RIPK1. J Cell Biochem 2018; 120:3559-3573. [DOI: 10.1002/jcb.27633] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 08/14/2018] [Indexed: 01/28/2023]
Affiliation(s)
- Can Zhao
- Department of Cardiology Beijing Friendship Hospital Capital Medical University Beijing China
| | - Jing Jiang
- Department of Cardiology Chinese People's Liberation Army 401st Hospital Qingdao China
| | - Yong‐Liang Wang
- Department of Cardiology Beijing Friendship Hospital Capital Medical University Beijing China
| | - Yong‐Quan Wu
- Department of Cardiology Beijing Anzhen Hospital Capital Medical University Beijing China
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Perlikos F, Lagiou M, Papalois A, Rizou T, Kroupis C, Toumpoulis IK. Lazaroid (U-74389G) ameliorates lung injury due to lipid peroxidation and nitric oxide synthase-dependent reactive oxygen species generation caused by remote systematic ischemia-reperfusion following thoracoabdominal aortic occlusion. Int J Surg 2018; 55:156-161. [PMID: 29860124 DOI: 10.1016/j.ijsu.2018.05.735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 05/03/2018] [Accepted: 05/27/2018] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Lung ischemia-reperfusion injury after thoracoabdominal aortic occlusion represents a major complication, which increases morbidity and mortality. In the present study we hypothesized that lazaroid U-74389G intravenous administration protects from lung ischemia-reperfusion injury through lipid peroxidation inhibition. MATERIALS AND METHODS A total of 24 pigs were randomized in three groups. Group I (n = 8) underwent sham operation, group II (n = 8) underwent thoracoabdominal aortic occlusion for 45min and received placebo and group III (n = 8) received 3 doses of lazaroid (3 mg/kg) 60 and 30min before thoracoabdominal aortic occlusion and at 30min during thoracoabdominal aortic occlusion (duration 45min). Aortic occlusion was performed with aortic balloon-catheters under fluoroscopic guidance. All animals were sacrificed at the 7 t h postoperative day and lung specimens were harvested for molecular analysis. RESULTS mRNA levels of leukotrienes LB4 (LTB4R2), LC4 (LTC4S) and nitric oxide synthase (NOS) isoforms including iNOS, nNOS and eNOS were determined with real-time RT-qPCR. Nitric oxide can either induce (iNOS) or inhibit (nNOS and eNOS) lipid peroxidation based on its specific isoform origin. Group III showed significantly reduced mRNA levels of LTB4R2 (-63.7%), LTC4S (-35.9%) and iNOS (-60.2%) when compared with group II (P < 0.05, for all). The mRNA levels of nNOS was significantly increased (+37.4%), while eNOS was slightly increased (+2.1%) in group III when compared with group II (P < 0.05 and P = 0.467 respectively). CONCLUSION Lazaroid U-74389G may represent an effective pharmacologic intervention in reducing lung ischemia-reperfusion injury following thoracoabdominal aortic occlusion.
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Affiliation(s)
- Fotis Perlikos
- First Department of Critical Care and Pulmonary Services, Evangelismos Hospital, National and Kapodistrian University of Athens, Greece.
| | - Maria Lagiou
- Department of Clinical Biochemistry, Attikon Hospital, National and Kapodistrian University of Athens, Greece
| | | | - Tatiana Rizou
- Department of Clinical Biochemistry, Attikon Hospital, National and Kapodistrian University of Athens, Greece
| | - Christos Kroupis
- Department of Clinical Biochemistry, Attikon Hospital, National and Kapodistrian University of Athens, Greece
| | - Ioannis K Toumpoulis
- Department of Cardiac Surgery, Attikon Hospital, National and Kapodistrian University of Athens, Greece
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Therapeutic potential of vitamin E and its derivatives in traumatic brain injury-associated dementia. Neurol Sci 2018; 39:989-998. [DOI: 10.1007/s10072-018-3398-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 03/28/2018] [Indexed: 01/01/2023]
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Effects of Renal Ischemic Postconditioning on Myocardial Ultrastructural Organization and Myocardial Expression of Bcl-2/Bax in Rabbits. BIOMED RESEARCH INTERNATIONAL 2017; 2016:9349437. [PMID: 28097153 PMCID: PMC5206426 DOI: 10.1155/2016/9349437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 11/10/2016] [Accepted: 11/17/2016] [Indexed: 12/11/2022]
Abstract
We investigated the cardioprotective effect of renal ischemic postconditioning (RI-PostC) and its mechanisms in a rabbit model. Rabbits underwent 60 min of left anterior descending coronary artery occlusion (LADO) and 6 h of reperfusion. The ischemia-reperfusion (IR) group underwent LADO and reperfusion only. In the RI-PostC group, the left renal artery underwent 3 cycles of occlusion for 30 seconds and release for 30 seconds, before the coronary artery was reperfused. In the RI-PostC + GF109203X group, the rabbits received 0.05 mg/kg GF109203X (protein kinase C inhibitor) intravenously for 10 min followed by RI-PostC. Light microscopy and electron microscopy demonstrated that the RI-PostC group showed less pronounced changes, a smaller infarct region, and less apoptosis than the other two groups. Bcl-2 and Bax protein expression did not differ between the IR and RI-PostC + GF109203X groups. However, in the RI-PostC group, Bcl-2 protein expression was significantly higher and Bax protein expression was significantly lower than in the other two groups (P < 0.05). Changes in heart rate and mean arterial pressure were also smaller in the RI-PostC group than in the other two groups. These results indicate that RI-PostC can ameliorate myocardial ischemia-reperfusion injury and increase the Bcl-2/Bax ratio through a mechanism involving protein kinase C.
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Qin C, Gu J, Qian H, Liu R, Xu F, Li Y, Xiao Z, He Q, Hu J, Meng W. Potential Mechanism of Post-Acute Aortic Dissection Inflammatory Responses: The Role of mtDNA from Activated Platelets. Cardiology 2016; 135:228-235. [PMID: 27529482 DOI: 10.1159/000446870] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 05/13/2016] [Indexed: 02/05/2023]
Abstract
BACKGROUND Acute aortic dissection (AD) is a lethal cardiovascular disease with severe inflammatory complications. Considering the proinflammatory properties of plasma mitochondrial DNA (mtDNA), we postulate that plasma mtDNA from activated platelets may be responsible for post-acute AD inflammatory responses. METHODS We consecutively enrolled 68 patients with acute AD as well as matched hypertensive and healthy participants. Blood samples were collected on admission for blood routine tests, mtDNA assay, and inflammatory cytokine analysis. A computed tomography scan was used to evaluate the extent of dissections. RESULTS Our results demonstrate that plasma mtDNA, platelet activation, and inflammatory levels were remarkably higher in acute AD patients than in hypertensive or healthy participants. These parameters were also higher in the Stanford A group than in the Stanford B group (p < 0.05). Bivariate correlation analysis demonstrated positive associations between mtDNA and inflammatory levels (tumor necrosis factor-α: r = 0.577; interleukin-6: r = 0.632), mtDNA and platelet activation (r = 0.642), and platelet activation and the extent of dissection (r = 0.635). CONCLUSION Our study suggests that acute AD-induced tunica media exposure causes platelet activation, which leads to the initiation of inflammatory responses via the release of mtDNA into the circulation. Our study provides a novel fundamental basis and a potential therapeutic target for the prevention and treatment of post-AD inflammatory responses.
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Affiliation(s)
- Chaoyi Qin
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, PR China
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