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Jing Y, Hu T, Yuan J, Liu Z, Tao M, Ou M, Cheng X, Cheng W, Yi Y, Xiong Q. Resveratrol protects against postmenopausal atherosclerosis progression through reducing PCSK9 expression via the regulation of the ERα-mediated signaling pathway. Biochem Pharmacol 2023; 211:115541. [PMID: 37030661 DOI: 10.1016/j.bcp.2023.115541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/28/2023] [Accepted: 03/30/2023] [Indexed: 04/10/2023]
Abstract
Elevated circulating proprotein convertase subtilisin/kexin 9 (PCSK9) levels are an important contributor to postmenopausal atherosclerosis (AS). We have previously reported that resveratrol (RSV), as a phytoestrogen, reduces hepatocyte steatosis and PCSK9 expression in L02 cells. This study aimed to investigate how RSV reduces PCSK9 expression to inhibit postmenopausal AS progression. Here, we found that treatment of Ovx/ApoE -/- mice with RSV significantly reduced dyslipidemia, plasma PCSK9 concentration and aortic plaque area. In addition, RSV significantly inhibited liver fat accumulation and improved the hepatocyte ultrastructure. Further studies showed that RSV upregulated estrogen receptor α (ERα) expression, while reduced the liver X receptor α (LXRα) expression and sterol regulatory-element-binding protein-1c (SREBP-1c) transcriptional activity. In vitro, RSV inhibited insulin-induced elevated intracellular/extracellular PCSK9 levels, enhanced receptor-mediated uptake of low-density lipoproteins in HepG2 cells. Furthermore, RSV attenuated the activity of the SRE-dependent PCSK9 promoter. However, these effects can be partially reversed by the antiestrogen ICI 182,780. Attenuation of these changes with ERα inhibition suggest that RSV may prevent the progression of postmenopausal AS by reducing PCSK9 expression in hepatocytes through ERα-mediated signaling.
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Affiliation(s)
- Yi Jing
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, China.
| | - Tianhui Hu
- Traditional Chinese Medicine Department, Huai'an Maternal and Child Health-Care Center, Huai'an 2230003, China
| | - Jun Yuan
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Zhikun Liu
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Mingtao Tao
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Mingyu Ou
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Xinru Cheng
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Wei Cheng
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Yuanyuan Yi
- The Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010050, China
| | - Qingping Xiong
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, China
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Resveratrol therapy improves liver function via estrogen-receptors after hemorrhagic shock in rats. PLoS One 2022; 17:e0275632. [PMID: 36227865 PMCID: PMC9560221 DOI: 10.1371/journal.pone.0275632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 09/20/2022] [Indexed: 11/05/2022] Open
Abstract
Background Resveratrol may improve organ dysfunction after experimental hemorrhagic or septic shock, and some of these effects appear to be mediated by estrogen receptors. However, the influence of resveratrol on liver function and hepatic microcirculation after hemorrhagic shock is unknown, and a presumed mediation via estrogen receptors has not been investigated in this context. Methods Male Sprague-Dawley rats (200-300g, n = 14/group) underwent hemorrhagic shock for 90 min (MAP 35±5 mmHg) and were resuscitated with shed blood and Ringer’s solution. Animals were treated intravenously with vehicle (1% EtOH), resveratrol (0.2 mg/kg), the unselective estrogen receptor antagonist ICI 182,780 (0.05 mg/kg) or resveratrol + ICI 182,780 prior to retransfusion. Sham-operated animals did not undergo hemorrhage but were treated likewise. After 2 hours of reperfusion, liver function was assessed either by plasma disappearance rate of indocyanine green (PDRICG) or evaluation of hepatic perfusion and hepatic integrity by intravital microscopy, serum enzyme as well as cytokine levels. Results Compared to vehicle controls, administration of resveratrol significantly improved PDRICG, hepatic perfusion index and hepatic integrity after hemorrhagic shock. The co-administration of ICI 182,780 completely abolished the protective effect only with regard to liver function. Conclusions This study shows that resveratrol may improve liver function and hepatocellular integrity after hemorrhagic shock in rats; estrogen receptors mediate these effects at least partially.
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MKK4 Knockdown Plays a Protective Role in Hemorrhagic Shock-Induced Liver Injury through the JNK Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:5074153. [PMID: 36164393 PMCID: PMC9509254 DOI: 10.1155/2022/5074153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 08/18/2022] [Accepted: 08/25/2022] [Indexed: 11/18/2022]
Abstract
Hemorrhagic shock (HS) triggers tissue hypoxia and organ failure during severe blood loss, and the liver is sensitive to HS. Mitogen-activated protein kinase kinase 4 (MKK4) activates the c-Jun NH2-terminal kinase (JNK) pathway, and its expression is upregulated in the serum of HS patients and mouse livers at 1 h post-HS. However, the function of MKK4 in HS-induced liver injury is unclear. The role of MKK4 was investigated in vivo using rat models of HS. Before HS, lentivirus harboring shRNA against MKK4 was injected into rats via the tail vein to knock down MKK4 expression. HS was induced by bloodletting via intubation of the femoral artery followed by resuscitation. The results showed that MKK4 knockdown reduced HS-induced apoptosis in the liver by decreasing Bax expression and the cleavage of caspase 3 and promoting Bcl-2 expression. Moreover, the generation of intracellular reactive oxygen species (ROS) and malondialdehyde (MDA) in the liver was promoted, while superoxide dismutase (SOD) activity was inhibited by HS. However, the effect of HS on oxidative stress was abrogated by MKK4 knockdown. Furthermore, MKK4 knockdown restored MMP and complex I and complex III activities and promoted ATP production, suggesting that HS-induced mitochondrial dysfunction in the liver was ameliorated by MKK4 knockdown. The inhibitory effect of MKK4 knockdown on the phosphorylation and activation of the JNK/c-Jun pathway was confirmed. Overall, MKK4 knockdown may suppress oxidative stress and subsequent apoptosis and improve mitochondrial function in the liver upon HS by inhibiting the JNK pathway. The MKK4/JNK axis was shown to be a therapeutic target for HS-induced liver injury in this study.
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Wu J, Yu C, Zeng X, Sun C. The hepatoprotective effect from ischemia-reperfusion injury of remote ischemic preconditioning in the liver related surgery: a meta-analysis. ANZ J Surg 2021; 92:1332-1337. [PMID: 34854193 DOI: 10.1111/ans.17236] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/14/2021] [Accepted: 09/14/2021] [Indexed: 01/01/2023]
Abstract
BACKGROUND This study aimed to assess the hepatoprotective effect of remote ischemic preconditioning (RIPC) in the liver related surgery. METHODS Published articles in PubMed, Embase and Cochrane clinical trial databases were searched from the inception to May 2021. Randomized control trials (RCTs) comparing the RIPC with control or other conditionings were included for analysis. The postoperative liver synthetic function was used as the primary outcome. RESULTS A total of six RCTs were included the present meta-analysis. There were 216 patients underwent RIPC and 212 patients in the control group. The RIPC group had a significantly lower level of postoperative alanine transaminase and aspartate transaminase (p<0.001). The postoperative bilirubin level was also significant lower in the RIPC group than the control group (MD = -9.0, 95%CI, -13.94 to -4.03; p<0.001). ICG clearance was reduced in controls versus RIPC (p<0.001). There was no significant difference between the RIPC and control group in terms of the complication rate. CONCLUSION The RIPC was evaluated to have a strong hepatoprotective effect from ischemia-reperfusion injury in the liver related surgery.
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Affiliation(s)
- Jinli Wu
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Soochow, China
| | - Chao Yu
- Department of General Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Xianggang Zeng
- Department of Anesthesiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Chengyi Sun
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Soochow, China
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Sims CA, Labiner HE, Shah SS, Baur JA. Longevity pathways in stress resistance: targeting NAD and sirtuins to treat the pathophysiology of hemorrhagic shock. GeroScience 2021; 43:1217-1228. [PMID: 33462707 DOI: 10.1007/s11357-020-00311-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 12/06/2020] [Indexed: 11/29/2022] Open
Abstract
Stress resistance correlates with longevity and this pattern has been exploited to help identify genes that can influence lifespan. Reciprocally, genes and pharmacological agents that have been studied primarily in the context of longevity may be an untapped resource for treating acute stresses. Here we summarize the evidence that targeting SIRT1, studied primarily in the context of longevity, can improve outcomes in hemorrhagic shock and resuscitation. Hemorrhagic shock is a potentially fatal condition that occurs when blood loss is so severe that tissues no longer receive adequate oxygen. While stabilizing the blood pressure and reperfusing tissues are necessary, re-introducing oxygen to ischemic tissues generates a burst of reactive oxygen species that can cause secondary tissue damage. Reactive oxygen species not only exacerbate the inflammatory cascade but also can directly damage mitochondria, leading to bioenergetic failure in the affected tissues. Treatments with polyphenol resveratrol and with nicotinamide adenine dinucleotide (NAD) precursors have both shown promising results in rodent models of hemorrhagic shock and resuscitation. Although a number of different mechanisms may be at play in each case, a common theme is that resveratrol and NAD both enhance the activity of SIRT1. Moreover, many of the physiologic improvements observed with resveratrol and NAD precursors are consistent with modulation of known SIRT1 targets. Because small blood vessels and limited blood volume make mice very challenging for the development of hemorrhagic shock models, there is a paucity of direct genetic evidence testing the role of SIRT1. However, the development of more robust methods in mice as well as genetic modifications in rats should allow the study of SIRT1 transgenic and KO rodents in the near future. The potential therapeutic effect of SIRT1 in hemorrhagic shock may serve as an important example supporting the value of considering "longevity" pathways in the mitigation of acute stresses.
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Affiliation(s)
- Carrie A Sims
- Division of Trauma, Critical Care, and Burn at The Ohio State University Wexner Medical Center, The Ohio State University, Faculty Office Tower, 395 12th Ave, Room 654, Columbus, OH, 43210, USA.
| | - Hanna E Labiner
- Division of Trauma, Critical Care, and Burn at The Ohio State University Wexner Medical Center, The Ohio State University, Faculty Office Tower, 395 12th Ave, Room 654, Columbus, OH, 43210, USA
| | - Sohini S Shah
- Institute for Diabetes, Obesity and Metabolism and Department of Physiology, Perelman School of Medicine, University of Pennsylvania, 3400 Civic Center Blvd., SCTR 12-114, Philadelphia, PA, 19104, USA
| | - Joseph A Baur
- Institute for Diabetes, Obesity and Metabolism and Department of Physiology, Perelman School of Medicine, University of Pennsylvania, 3400 Civic Center Blvd., SCTR 12-114, Philadelphia, PA, 19104, USA.
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Qasem RJ. The estrogenic activity of resveratrol: a comprehensive review of in vitro and in vivo evidence and the potential for endocrine disruption. Crit Rev Toxicol 2020; 50:439-462. [DOI: 10.1080/10408444.2020.1762538] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Rani J. Qasem
- Department of Pharmaceutical Sciences, College of Pharmacy, King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), King Abdullah International Medical Research Center (KAIMRC) and King Abdulaziz Medical City, National Guard Health Affairs (NGHA), Riyadh, Saudi Arabia
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7
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Xie Y, Xu M, Deng M, Li Z, Wang P, Ren S, Guo Y, Ma X, Fan J, Billiar TR, Xie W. Activation of Pregnane X Receptor Sensitizes Mice to Hemorrhagic Shock-Induced Liver Injury. Hepatology 2019; 70:995-1010. [PMID: 31038762 PMCID: PMC6717545 DOI: 10.1002/hep.30691] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 04/24/2019] [Indexed: 12/28/2022]
Abstract
Hemorrhagic shock (HS) is a life-threatening condition associated with tissue hypoperfusion and often leads to injury of multiple organs including the liver. Pregnane X receptor (PXR) is a species-specific xenobiotic receptor that regulates the expression of drug-metabolizing enzymes (DMEs) such as the cytochrome P450 (CYP) 3A. Many clinical drugs, including those often prescribed to trauma patients, are known to activate PXR and induce CYP3A. The goal of this study is to determine whether PXR plays a role in the regulation of DMEs in the setting of HS and whether activation of PXR is beneficial or detrimental to HS-induced hepatic injury. PXR transgenic, knockout, and humanized mice were subject to HS, and the liver injury was assessed histologically and biochemically. The expression and/or activity of PXR and CYP3A were manipulated genetically or pharmacologically in order to determine their effects on HS-induced liver injury. Our results showed that genetic or pharmacological activation of PXR sensitized wild-type and hPXR/CYP3A4 humanized mice to HS-induced hepatic injury, whereas knockout of PXR protected mice from HS-induced liver injury. Mechanistically, the sensitizing effect of PXR activation was accounted for by PXR-responsive induction of CYP3A and increased oxidative stress in the liver. The sensitizing effect of PXR was attenuated by ablation or pharmacological inhibition of CYP3A, treatment with the antioxidant N-acetylcysteine amide, or treatment with a PXR antagonist. Conclusion: We have uncovered a function of PXR in HS-induced hepatic injury. Our results suggest that the unavoidable use of PXR-activating drugs in trauma patients has the potential to exacerbate HS-induced hepatic injury, which can be mitigated by the coadministration of antioxidative agents, CYP3A inhibitors, or PXR antagonists.
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Affiliation(s)
- Yang Xie
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Meishu Xu
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Meihong Deng
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Zhigang Li
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, USA,Surgical Research, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA, USA
| | - Pengcheng Wang
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Songrong Ren
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Yan Guo
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA, USA,Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaochao Ma
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jie Fan
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, USA,Surgical Research, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA, USA
| | | | - Wen Xie
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA, USA,Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA, USA.,Corresponding Author: Dr. Wen Xie, Center for Pharmacogenetics and Department of Pharmaceutical Sciences, 306 Salk Pavilion, University of Pittsburgh, Pittsburgh, PA 15261.
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8
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Chen YH, Fu YC, Wu MJ. Does Resveratrol Play a Role in Decreasing the Inflammation Associated with Contrast Induced Nephropathy in Rat Model? J Clin Med 2019; 8:jcm8020147. [PMID: 30691208 PMCID: PMC6406726 DOI: 10.3390/jcm8020147] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 01/13/2019] [Accepted: 01/24/2019] [Indexed: 01/14/2023] Open
Abstract
Contrast is widely used in invasive image examinations such as computed tomography (CT) and angiography; however, the risk of contrast-induced nephropathy (CIN) is high. The aim of this study was to investigate the protective effect of resveratrol in a rat model of CIN. Sprague-Dawley rats were divided into four groups: the control group (0.9% saline infusion only); resveratrol group (RSV, resveratrol, 30 mg/kg); contrast media group (CIN); and resveratrol + contrast media group (RCIN, resveratrol 30 mg/kg 60 min before CIN). CIN was induced via an intravenous injection of a single dose of indomethacin (10 mg/kg), one dose of N-nitro-L-arginine methyl ester (10 mg/kg), and a single dose of contrast medium iopromide (2 g/kg). Blood urea nitrogen, creatinine, and neutrophil gelatinase-associated lipocalin (NGAL) were higher in the CIN group compared to the other groups. Histopathological tubule injury scores were also higher in the CIN group compared to the other groups (p < 0.01). NLPR3 in kidney tissue were higher in the CIN group compared to the other groups; however, these results were improved by resveratrol in the RCIN group compared with the CIN group. The expressions of IL-1β and the percentage of apoptotic cells were higher in the CIN group than in the control and RSV groups, but they were lower in the RCIN group than in the CIN group. The expression of cleaved caspase-3 was higher in the CIN group than in the control and RSV groups, but lower in the RCIN group than in the CIN group. Resveratrol treatment attenuated both injury processes and apoptosis and inhibited the inflammasome pathway in this rat CIN model.
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Affiliation(s)
- Yi-Hsin Chen
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Department of Nephrology, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan.
- School of Medicine, Tzu Chi University, Hualien 907, Taiwan.
| | - Yun-Ching Fu
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- School of Medicine, College of Medicine, China Medical University, Taichung 404, Taiwan.
- Section of Pediatric Cardiology, Department of Pediatrics, Taichung Veterans General Hospital, Taichung 407, Taiwan.
| | - Ming-Ju Wu
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- School of Medicine, College of Medicine, China Medical University, Taichung 404, Taiwan.
- Division of Nephrology, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung 407, Taiwan.
- School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan.
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Ozgur S, Oktem M, Altinkaya SO, Oktem EO, Cenksoy C, Erdem O, Elbeg S, Helvaci A, Erdem A, Erdem M. The effects of resveratrol on ovarian hyperstimulation syndrome in a rat model. Taiwan J Obstet Gynecol 2018; 57:383-388. [DOI: 10.1016/j.tjog.2018.04.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/10/2017] [Indexed: 11/25/2022] Open
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Mechanisms Involved in Secondary Cardiac Dysfunction in Animal Models of Trauma and Hemorrhagic Shock. Shock 2017; 48:401-410. [DOI: 10.1097/shk.0000000000000882] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Sims CA, Baur JA. The grapes and wrath: using resveratrol to treat the pathophysiology of hemorrhagic shock. Ann N Y Acad Sci 2017; 1403:70-81. [PMID: 28845517 DOI: 10.1111/nyas.13444] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 06/28/2017] [Accepted: 07/03/2017] [Indexed: 12/17/2022]
Abstract
Resveratrol, a naturally occurring polyphenol found in grapes, has been shown to reduce oxidative stress and inflammation in a variety of conditions. Recently, resveratrol has been investigated as a potential adjunct to resuscitation therapy for hemorrhagic shock-a condition characterized by tissue hypoxia, mitochondrial dysfunction, and inflammation. Although standard resuscitation restores tissue perfusion, it can exacerbate oxidative stress and organ damage. In rodent models of severe hemorrhagic shock, resveratrol mitigates reperfusion injury, preserves organ function, and improves survival. While many of these benefits can be attributed to its ability to activate sirtuin 1, resveratrol interacts with many targets that are relevant to ischemia-reperfusion. Here, we explore the probable mechanisms, potential benefits, and possible problems associated with administering resveratrol as an adjunct during resuscitation of hemorrhagic shock.
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Affiliation(s)
- Carrie A Sims
- The Trauma Center at the University of Pennsylvania, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Joseph A Baur
- Institute for Diabetes, Obesity and Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.,Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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12
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Attenuation of Multiple Organ Damage by Continuous Low-Dose Solvent-Free Infusions of Resveratrol after Severe Hemorrhagic Shock in Rats. Nutrients 2017; 9:nu9080889. [PMID: 28817064 PMCID: PMC5579682 DOI: 10.3390/nu9080889] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Revised: 08/11/2017] [Accepted: 08/14/2017] [Indexed: 01/05/2023] Open
Abstract
Therapeutic effects of continuous intravenous infusions of solvent-free low doses of resveratrol on organ injury and systemic consequences resulting from severe hemorrhagic shock in rats were studied. Hemorrhagic shock was induced by withdrawing arterial blood until a mean arterial blood pressure (MAP) of 25-30 mmHg was reached. Following a shock phase of 60 min, rats were resuscitated with the withdrawn blood plus lactated Ringer's. Resveratrol (20 or 60 μg/kg × h) was continuously infused intravenously starting with the resuscitation phase (30 min) and continued until the end of the experiment (total treatment time 180 min). Animals of the shock control group received 0.9% NaCl solution. After the observation phase (150 min), rats were sacrificed. Resveratrol significantly stabilized the MAP and peripheral oxygen saturation after hemorrhagic shock, decreased the macroscopic injury of the small intestine, significantly attenuated the shock-induced increase in tissue myeloperoxidase activity in the small intestine, liver, kidney and lung, and diminished tissue hemorrhages (particularly in the small intestine and liver) as well as the rate of hemolysis. Already very low doses of resveratrol, continuously infused during resuscitation after severe hemorrhagic shock, can significantly improve impaired systemic parameters and attenuate multiple organ damage in rats.
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Chang YC, Lin CW, Yu CC, Wang BY, Huang YH, Hsieh YC, Kuo YL, Chang WW. Resveratrol suppresses myofibroblast activity of human buccal mucosal fibroblasts through the epigenetic inhibition of ZEB1 expression. Oncotarget 2016; 7:12137-49. [PMID: 26934322 PMCID: PMC4914274 DOI: 10.18632/oncotarget.7763] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 02/18/2016] [Indexed: 01/18/2023] Open
Abstract
Oral submucous fibrosis (OSF) is a precancerous condition of the oral mucosa without specific therapeutic drugs. We previously demonstrated that the zinc finger E-box binding homeobox 1 (ZEB1) plays a pathogenic role in the induction of the myofibroblast activity of buccal mucosal fibroblasts (BMFs) and contributes to the pathogenesis of OSF. Resveratrol is a natural polyphenolic flavonoid with anti-fibrosis activity in various tissues and has the capability to inhibit ZEB1 in oral cancer cells. We examined the effect of resveratrol on the myofibroblast activity of human primary fibrotic BMFs (fBMFs) derived from OSF tissues. With the collagen contraction assay, resveratrol displayed anti-myofibroblast activity in three fBMF lines. Resveratrol also inhibited the expression of fibrogenic genes at the mRNA and protein levels in a dose- and time-dependent manner. The downregulation of ZEB1 in fBMFs by resveratrol was mediated by epigenetic mechanisms, such as the upregulated expression of miR-200c and the enhancer of zeste homolog 2 (EZH2), as well as the trimethylated lysine 27 of histone H3 (H3K27me3). Resveratrol also increased the binding of H3K27me3 to the ZEB1 promoter. The knockdown of EZH2 in fBMFs caused the upregulation of ZEB1 and suppressed the inhibitory effect of resveratrol. Furthermore, the reversed expression pattern between EZH2 and ZEB1 was observed in 6/8 OSF tissues with twofold upregulation of ZEB1 expression compared with the adjacent normal mucosa. In conclusion, our data suggest that resveratrol epigenetically inhibits ZEB1 expression to suppress the myofibroblast activity of fBMFs and may serve as a dietary supplement for OSF patients.
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Affiliation(s)
- Yu-Chao Chang
- 1 School of Dentistry, Chung Shan Medical University, Taichung, Taiwan,2 Department of Dentistry, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Cheng-Wei Lin
- 3 School of Biomedical Sciences, College of Medical Science and Technology, Chung Shan Medical University, Taichung, Taiwan
| | - Cheng-Chia Yu
- 1 School of Dentistry, Chung Shan Medical University, Taichung, Taiwan,2 Department of Dentistry, Chung Shan Medical University Hospital, Taichung, Taiwan,4 Institute of Oral Science, Chung Shan Medical University, Taichung, Taiwan
| | - Bing-Yen Wang
- 5 Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan,6 Division of Throacic Surgery, Department of Surgery, Changhua Christian Hospital, Changhua County, Taiwan,7 School of Medicine, National Yang-Ming University, Taipei City, Taiwan
| | - Yu-Hao Huang
- 3 School of Biomedical Sciences, College of Medical Science and Technology, Chung Shan Medical University, Taichung, Taiwan
| | - Yang-Chih Hsieh
- 3 School of Biomedical Sciences, College of Medical Science and Technology, Chung Shan Medical University, Taichung, Taiwan
| | - Yu-Liang Kuo
- 8 School of Medical Imaging and Radiological Sciences, Chung Shan Medical University, Taichung, Taiwan,9 Department of Medical Imaging, Chung Shan Medical University Hospital, Taichung City, Taiwan
| | - Wen-Wei Chang
- 3 School of Biomedical Sciences, College of Medical Science and Technology, Chung Shan Medical University, Taichung, Taiwan,10 Department of Medical Research, Chung Shan Medical University Hospital, Taichung City, Taiwan
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Abstract
Casodex (bicalutamide), an androgen receptor antagonist, is used for the treatment of prostate cancer. Recent evidences show that Akt signaling pathway exerts organ-protective effects after injury. The aim of this study was to investigate whether Akt plays any role in the casodex-mediated attenuation of hepatic injury after trauma-hemorrhagic shock. Male Sprague-Dawley rats underwent trauma hemorrhage (mean blood pressure kept at approximately 35-40 mm Hg for 90 min), followed by fluid resuscitation. During resuscitation, a single dose of casodex (5 mg/kg, intravenous) with and without a phosphatidylinositol 3-kinase inhibitor wortmannin (1 mg/kg, intravenous), wortmannin or vehicle was administered. Plasma aspartate aminotransferase and alanine aminotransferase levels and various hepatic parameters were measured at 24 h after resuscitation. One-way analysis of variance and the Tukey test were used for statistical analysis. These results showed that trauma hemorrhage increased hepatic myeloperoxidase activity, interleukin 6 and intercellular adhesion molecule 1 levels, and plasma aspartate aminotransferase and alanine aminotransferase concentrations. In the trauma hemorrhage rats treated with casodex, these parameters were significantly improved. Casodex treatment also increased hepatic phospho-Akt expression compared with vehicle-treated trauma hemorrhaged rats. Coadministration of wortmannin with casodex abolished the casodex-induced advantageous effects on the aforementioned parameters and hepatic injury. Our results suggest that the protective effect of casodex administration on attenuation of hepatic injury after trauma hemorrhage, which is, at least in part, through Akt-dependent pathway.
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Faghihzadeh F, Hekmatdoost A, Adibi P. Resveratrol and liver: A systematic review. JOURNAL OF RESEARCH IN MEDICAL SCIENCES 2015; 20:797-810. [PMID: 26664429 PMCID: PMC4652315 DOI: 10.4103/1735-1995.168405] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Background: Recent studies demonstrated that resveratrol has many therapeutic effects on liver disorders. Resveratrol significantly increased survival after liver transplantation, decreased fat deposition, necrosis, and apoptosis which induced by ischemia in Wistar rats. It provided liver protection against chemical, cholestatic, and alcohol injury. Resveratrol can improve glucose metabolism and lipid profile and decrease liver fibrosis and steatosis. Furthermore, it was able to alter hepatic cell fatty acid composition. According to extension of liver disease around the world and necessity of finding new threat, this review critically examines the current preclinical in vitro and in vivo studies on the preventive and therapeutic effects of resveratrol in liver disorders. Materials and Methods: A search in PubMed, Google Scholar, and Scopus was undertaken to identify relevant literature using search terms, including “liver,” “hepatic,” and “Resveratrol.” Both in vivo and in vitro studies were included. No time limiting considered for this search. Results: A total of 76 articles were eligible for this review. In these articles, resveratrol shows antioxidative properties in different models of hepatitis resulting in reducing of hepatic fibrosis. Conclusion: Resveratrol could reduce hepatic steatosis through modulating the insulin resistance and lipid profile in animals. These high quality preclinical studies propose the potential therapeutic implication of resveratrol in liver disorders especially those with hepatic steatosis. Resveratrol can play a pivotal role in prevention and treatment of liver disorders by reducing hepatic fibrosis.
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Affiliation(s)
- Forouzan Faghihzadeh
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - Azita Hekmatdoost
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - Payman Adibi
- Department of Medicine, Integrative Functional Gastroenterology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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Kimbrough CW, Lakshmanan J, Matheson PJ, Woeste M, Gentile A, Benns MV, Zhang B, Smith JW, Harbrecht BG. Resveratrol decreases nitric oxide production by hepatocytes during inflammation. Surgery 2015; 158:1095-101; discussion 1101. [PMID: 26283207 DOI: 10.1016/j.surg.2015.07.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 06/19/2015] [Accepted: 07/15/2015] [Indexed: 12/31/2022]
Abstract
INTRODUCTION The production of excessive amounts of nitric oxide (NO) through inducible nitric oxide synthase (iNOS) contributes to organ injury, inflammation, and mortality after shock. Resveratrol (RSV) is a natural polyphenol that decreases shock-induced hepatic injury and inflammation. We hypothesized that RSV would mediate these effects by decreasing hepatocyte iNOS production. METHODS Rat hepatocytes were isolated, cultured with varying concentrations of RSV, and then stimulated to induce iNOS with interleukin-1 and interferon. Induction of iNOS protein was measured by Western blot, iNOS mRNA by polymerase chain reaction, and NO production was measured by culture supernatant nitrite. Activation of intracellular signaling pathways involving Akt, c-Jun N-terminal kinase (JNK), and nuclear factor κB (NF-κB) were measured by Western blot using isoform-specific antibodies. RESULTS RSV decreased the expression of iNOS mRNA, protein, and supernatant nitrite in a dose-dependent manner. Our previous work demonstrated that Akt and JNK both inhibit hepatic iNOS production, whereas NF-κB increases iNOS expression. Analysis of signaling pathways in this study demonstrated that RSV increased JNK phosphorylation but decreased Akt phosphorylation and increased NF-κB activation. CONCLUSION RSV decreases cytokine-induced hepatocyte iNOS expression, possibly through up-regulation of the JNK signaling pathway. RSV merits further investigation to determine its mechanism as a compound that can decrease inflammation after shock.
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Affiliation(s)
- Charles W Kimbrough
- The Hiram C. Polk Jr., MD Department of Surgery and Price Institute of Surgical Research, University of Louisville School of Medicine, Louisville, KY
| | - Jaganathan Lakshmanan
- The Hiram C. Polk Jr., MD Department of Surgery and Price Institute of Surgical Research, University of Louisville School of Medicine, Louisville, KY
| | - Paul J Matheson
- The Hiram C. Polk Jr., MD Department of Surgery and Price Institute of Surgical Research, University of Louisville School of Medicine, Louisville, KY
| | - Matthew Woeste
- The Hiram C. Polk Jr., MD Department of Surgery and Price Institute of Surgical Research, University of Louisville School of Medicine, Louisville, KY
| | - Andrea Gentile
- The Hiram C. Polk Jr., MD Department of Surgery and Price Institute of Surgical Research, University of Louisville School of Medicine, Louisville, KY
| | - Matthew V Benns
- The Hiram C. Polk Jr., MD Department of Surgery and Price Institute of Surgical Research, University of Louisville School of Medicine, Louisville, KY
| | - Baochun Zhang
- The Hiram C. Polk Jr., MD Department of Surgery and Price Institute of Surgical Research, University of Louisville School of Medicine, Louisville, KY
| | - Jason W Smith
- The Hiram C. Polk Jr., MD Department of Surgery and Price Institute of Surgical Research, University of Louisville School of Medicine, Louisville, KY
| | - Brian G Harbrecht
- The Hiram C. Polk Jr., MD Department of Surgery and Price Institute of Surgical Research, University of Louisville School of Medicine, Louisville, KY.
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Liu FC, Tsai YF, Tsai HI, Yu HP. Anti-Inflammatory and Organ-Protective Effects of Resveratrol in Trauma-Hemorrhagic Injury. Mediators Inflamm 2015; 2015:643763. [PMID: 26273141 PMCID: PMC4529946 DOI: 10.1155/2015/643763] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 12/04/2014] [Indexed: 12/31/2022] Open
Abstract
Resveratrol, a natural polyphenolic compound of grape and red wine, owns potential anti-inflammatory effects, which results in the reduction of cytokines overproduction, the inhibition of neutrophil activity, and the alteration of adhesion molecules expression. Resveratrol also possesses antioxidant, anti-coagulation and anti-aging properties, and it may control of cell cycle and apoptosis. Resveratrol has been shown to reduce organ damage following traumatic and shock-like states. Such protective phenomenon is reported to be implicated in a variety of intracellular signaling pathways including the activation of estrogen receptor, the regulation of the sirtuin 1/nuclear factor-kappa B and mitogen-activated protein kinases/hemeoxygenase-1 pathway, and the mediation of proinflammatory cytokines and reactive oxygen species formation and reaction. In the recent studies, resveratrol attenuates hepatocyte injury and improves cardiac contractility due to reduction of proinflammatory mediator expression and ameliorates hypoxia-induced liver and kidney mitochondrial dysfunction following trauma and hemorrhagic injuries. Moreover, through anti-inflammatory effects and antioxidant properties, the resveratrol is believed to protect organ function in trauma-hemorrhagic injury. In this review, the organ-protective and anti-inflammatory effects of resveratrol in trauma-hemorrhagic injury will be discussed.
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Affiliation(s)
- Fu-Chao Liu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan City 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City 333, Taiwan
| | - Yung-Fong Tsai
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan City 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City 333, Taiwan
| | - Hsin-I Tsai
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan City 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City 333, Taiwan
| | - Huang-Ping Yu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan City 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan
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Weniger M, D'Haese JG, Angele MK, Chaudry IH. Potential therapeutic targets for sepsis in women. Expert Opin Ther Targets 2015; 19:1531-43. [PMID: 26083575 DOI: 10.1517/14728222.2015.1057570] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Gender is increasingly recognized as a key factor in trauma and sepsis. Multiple clinical and experimental studies on sepsis have shown a distinct advantage of females in the proestrus cycle to survive sepsis compared with age-matched males. In addition, estrogen treatment is beneficial in non-proestrus cycles and also in ovarectomized females. In this manuscript, the effects of gender and sex hormones in sepsis are summarized and potential gender-specific therapeutic strategies in women are evaluated. AREAS COVERED This review comprises current clinical studies on the effect of gender in sepsis and gives an overview on gender and sex hormone-related effects on immune cells and organ function. Based on clinical and experimental data, potential therapeutic targets are presented. EXPERT OPINION Estrogens and estrogen-receptor agonists have been extensively shown to be beneficial in the setting of sepsis. Clinical data, however, do not clearly support their therapeutic use. This discrepancy appears to be mainly due to insufficient study design in clinical trials conducted up to now. Therefore, improved study protocols with exact analysis of the patients' hormonal status are needed to clarify the role of gender and sex hormones in trauma and sepsis.
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Affiliation(s)
- Maximilian Weniger
- a 1 Ludwig Maximilians-University, Department of General, Visceral, Transplantation, Vascular and Thoracic Surgery, Campus Grosshadern , Munich, Germany
| | - Jan G D'Haese
- b 2 Ludwig Maximilians-University, Department of General, Visceral, Transplantation, Vascular and Thoracic Surgery, Campus Grosshadern , Munich, Germany
| | - Martin K Angele
- c 3 Ludwig Maximilians-University, Department of General, Visceral, Transplantation, Vascular and Thoracic Surgery, Campus Grosshadern , Munich, Germany
| | - Irshad H Chaudry
- d 4 University of Alabama at Birmingham, Center for Surgical Research and Department of Surgery , G094 Volker Hall, 1670 University Boulevard, Birmingham, AL 35294, USA +1 205 975 2195 ; +1 205 975 9719 ;
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Organ-Protective Effects of Red Wine Extract, Resveratrol, in Oxidative Stress-Mediated Reperfusion Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:568634. [PMID: 26161238 PMCID: PMC4487914 DOI: 10.1155/2015/568634] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 10/09/2014] [Indexed: 12/25/2022]
Abstract
Resveratrol, a polyphenol extracted from red wine, possesses potential antioxidative and anti-inflammatory effects, including the reduction of free radicals and proinflammatory mediators overproduction, the alteration of the expression of adhesion molecules, and the inhibition of neutrophil function. A growing body of evidence indicates that resveratrol plays an important role in reducing organ damage following ischemia- and hemorrhage-induced reperfusion injury. Such protective phenomenon is reported to be implicated in decreasing the formation and reaction of reactive oxygen species and pro-nflammatory cytokines, as well as the mediation of a variety of intracellular signaling pathways, including the nitric oxide synthase, nicotinamide adenine dinucleotide phosphate oxidase, deacetylase sirtuin 1, mitogen-activated protein kinase, peroxisome proliferator-activated receptor-gamma coactivator 1 alpha, hemeoxygenase-1, and estrogen receptor-related pathways. Reperfusion injury is a complex pathophysiological process that involves multiple factors and pathways. The resveratrol is an effective reactive oxygen species scavenger that exhibits an antioxidative property. In this review, the organ-protective effects of resveratrol in oxidative stress-related reperfusion injury will be discussed.
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MitoQ modulates oxidative stress and decreases inflammation following hemorrhage. J Trauma Acute Care Surg 2015; 78:573-9. [PMID: 25710429 DOI: 10.1097/ta.0000000000000533] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Oxidative stress associated with hemorrhagic shock and reperfusion (HSR) results in the production of superoxide radicals and other reactive oxygen species, leading to cell damage and multiple-organ dysfunction. We sought to determine if MitoQ, a mitochondria-targeted antioxidant, reduces morbidity in a rat model of HSR by limiting oxidative stress. METHODS HSR was achieved in male rats by arterial blood withdrawal to a mean arterial pressure of 25 ± 2 mm Hg for 1 hour before resuscitation. MitoQ (5 mg/kg), TPP (triphenylphosphonium, 5 mg/kg) or saline (0.9% vol./vol.) was administered intravenously 30 minutes before resuscitation, followed by an intraperitoneal administration (MitoQ, 20 mg/kg) immediately after resuscitation (n = 5 per group). Morbidity was assessed based on cumulative markers of animal distress (0-10 scale). Rats were sacrificed 2 hours after procedure completion, and liver tissue was collected and processed for histology or assayed for lipid peroxidation (thiobarbituric acid reactive substance [TBARS]) or endogenous antioxidant (catalase, glutathione peroxidase [GPx], and superoxide dismutase) activity. RESULTS HSR significantly increased morbidity as well as TBARS and catalase activities versus sham. Conversely, no difference in GPx or superoxide dismutase activity was measured between sham, HSR, and TPP, MitoQ administration reduced morbidity versus HSR (5.8 ± 0.3 vs. 7.6 ± 0.3; p < 0.05), while TPP administration significantly reduced hepatic necrosis versus both HSR and HSR-MitoQ (1.2 ± 0.1 vs. 2.0 ± 0.2 vs. 1.9 ± 0.2; p < 0.05, n = 5). Analysis of oxidative stress demonstrated increased TBARS and GPx in HSR-MitoQ versus sham (12.0 ± 1.1 μM vs. 6.2 ± 0.5 μM and 37.9 ± 3.0 μmol/min/mL vs. 22.9 ± 2.7 μmol/min/mL, TBARS and GPx, respectively, n = 5; p < 0.05). Conversely, catalase activity in HSR-MitoQ was reduced versus HSR (1.96 ± 1.17 mol/min/mL vs. 2.58 ± 1.81 mol/min/mL; n = 5; p < 0.05). Finally, MitoQ treatment decreased tumor necrosis factor α (0.66 ± 0.07 pg/mL vs. 0.92 ± 0.08 pg/mL) and interleukin 6 (7.3 ± 0.8 pg/mL vs. 11 ± 0.9 pg/mL) versus HSR as did TPP alone (0.58 ± 0.05 pg/mL vs. 0.92 ± 0.08 pg/mL; 6.7 ± 0.6 pg/mL vs. 11 ± 0.9 pg/mL; n = 5; p < 0.05). CONCLUSION Our data demonstrate that MitoQ treatment following hemorrhage significantly limits morbidity and decreases hepatic tumor necrosis factor α and interleukin 6. In addition, MitoQ differentially modulates oxidative stress and hepatic antioxidant activity.
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Nwachukwu JC, Srinivasan S, Bruno NE, Parent AA, Hughes TS, Pollock JA, Gjyshi O, Cavett V, Nowak J, Garcia-Ordonez RD, Houtman R, Griffin PR, Kojetin DJ, Katzenellenbogen JA, Conkright MD, Nettles KW. Resveratrol modulates the inflammatory response via an estrogen receptor-signal integration network. eLife 2014; 3:e02057. [PMID: 24771768 PMCID: PMC4017646 DOI: 10.7554/elife.02057] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 04/05/2014] [Indexed: 12/21/2022] Open
Abstract
Resveratrol has beneficial effects on aging, inflammation and metabolism, which are thought to result from activation of the lysine deacetylase, sirtuin 1 (SIRT1), the cAMP pathway, or AMP-activated protein kinase. In this study, we report that resveratrol acts as a pathway-selective estrogen receptor-α (ERα) ligand to modulate the inflammatory response but not cell proliferation. A crystal structure of the ERα ligand-binding domain (LBD) as a complex with resveratrol revealed a unique perturbation of the coactivator-binding surface, consistent with an altered coregulator recruitment profile. Gene expression analyses revealed significant overlap of TNFα genes modulated by resveratrol and estradiol. Furthermore, the ability of resveratrol to suppress interleukin-6 transcription was shown to require ERα and several ERα coregulators, suggesting that ERα functions as a primary conduit for resveratrol activity.DOI: http://dx.doi.org/10.7554/eLife.02057.001.
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Affiliation(s)
- Jerome C Nwachukwu
- Department of Cancer Biology, The Scripps Research Institute, Jupiter, United States
| | - Sathish Srinivasan
- Department of Cancer Biology, The Scripps Research Institute, Jupiter, United States
| | - Nelson E Bruno
- Department of Cancer Biology, The Scripps Research Institute, Jupiter, United States
| | | | - Travis S Hughes
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, United States
| | - Julie A Pollock
- Department of Chemistry, University of Illinois, Urbana, United States
| | - Olsi Gjyshi
- Department of Cancer Biology, The Scripps Research Institute, Jupiter, United States
| | - Valerie Cavett
- Department of Cancer Biology, The Scripps Research Institute, Jupiter, United States
| | - Jason Nowak
- Department of Cancer Biology, The Scripps Research Institute, Jupiter, United States
| | - Ruben D Garcia-Ordonez
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, United States
| | - René Houtman
- Nuclear Receptor Group, PamGene International, Den Bosch, Netherlands
| | - Patrick R Griffin
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, United States
| | - Douglas J Kojetin
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, United States
| | | | - Michael D Conkright
- Department of Cancer Biology, The Scripps Research Institute, Jupiter, United States
| | - Kendall W Nettles
- Department of Cancer Biology, The Scripps Research Institute, Jupiter, United States
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Resveratrol attenuates hypoxic injury in a primary hepatocyte model of hemorrhagic shock and resuscitation. J Trauma Acute Care Surg 2014; 76:409-17. [PMID: 24458046 DOI: 10.1097/ta.0000000000000096] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Oxidative stress following hemorrhagic shock and resuscitation (HSR) is regulated, in part, by inflammatory and apoptotic mediators such as necrosis factor κB (NF-κB) and p53. Sirtuin 1 (Sirt-1) is a metabolic intermediary that regulates stress responses by suppressing NF-κB and p53 activity. Resveratrol is a naturally occurring polyphenolic antioxidant and Sirt-1 agonist. The aim of this study was to determine whether resveratrol protects hepatocytes following HSR or hypoxia. METHODS In vivo, HSR was achieved in male rats by arterial blood withdrawal to 30 ± 2 mm Hg for 1 hour before resuscitation with or without resveratrol (Res, 30 mg/kg). Hepatic tissue was stained and scored for necrosis, interleukin 6, and Sirt-1 expression. In vitro, primary rat hepatocytes were subjected to 8 hours of hypoxia without or with Res (100 µM). Cells were analyzed immediately or after 6 hours of normoxia, for survival and markers of injury (lactate dehydrogenase assay, lipid peroxidation, and mitochondrial integrity). Cell lysates were collected for cytochrome c analysis and immunoprecipitated using antibodies against NF-κB (p65) or p53. RESULTS In vivo, animals subject to HSR exhibited increased expression of markers of hepatocyte damage compared with those sham operated, concomitant with lower Sirt-1 expression. In vitro, hypoxia followed by normoxia resulted in increased cell death, an effect that was blunted by Res. Analysis of cell and mitochondrial function demonstrated that Res inhibited the detrimental effects of hypoxia in isolated hepatocytes. CONCLUSION Resveratrol prevents cell death in HSR and exerts a protective effect on the mitochondria in a hepatocyte model of hypoxic injury-reoxygenation possibly via Sirt-1 modulation of p53 and NF-κB activity.
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Yu HP, Liu FC, Tsai YF, Hwang TL. Osthole attenuates hepatic injury in a rodent model of trauma-hemorrhage. PLoS One 2013; 8:e65916. [PMID: 23755293 PMCID: PMC3675024 DOI: 10.1371/journal.pone.0065916] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 04/30/2013] [Indexed: 01/14/2023] Open
Abstract
Recent evidences show that osthole possesses anti-inflammatory properties and protective effects following shock-like states, but the mechanism of these effects remains unknown. The p38 mitogen-activated protein kinase (p38 MAPK) pathway exerts anti-inflammatory effects in injury. The aim of this study was to investigate whether p38 MAPK plays any role in the osthole-mediated attenuation of hepatic injury after trauma-hemorrhage. Male Sprague-Dawley rats underwent trauma-hemorrhage (mean blood pressure maintained at approximately 35-40 mmHg for 90 minutes), followed by fluid resuscitation. During resuscitation, a single dose of osthole (3 mg/kg, intravenously) with and without a p38 MAPK inhibitor SB-203580 (2 mg/kg, intravenously), SB-203580 or vehicle was administered. Plasma alanine aminotransferase (ALT) with aspartate aminotransferase (AST) concentrations and various hepatic parameters were measured (n = 8 rats/group) at 24 hours after resuscitation. The results showed that trauma-hemorrhage increased hepatic myeloperoxidase activity, intercellular adhesion molecule-1 and interleukin-6 levels, and plasma ALT and AST concentrations. These parameters were significantly improved in the osthole-treated rats subjected to trauma-hemorrhage. Osthole treatment also increased hepatic phospho-p38 MAPK expression compared with vehicle-treated trauma-hemorrhaged rats. Co-administration of SB-203580 with osthole abolished the osthole-induced beneficial effects on the above parameters and hepatic injury. These results suggest that the protective effect of osthole administration on alleviation of hepatic injury after trauma-hemorrhage, which is, at least in part, through p38 MAPK-dependent pathway.
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Affiliation(s)
- Huang-Ping Yu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- * E-mail: (HPY); (TLH)
| | - Fu-Chao Liu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yung-Fong Tsai
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, Chang Gung University, Taoyuan, Taiwan
- * E-mail: (HPY); (TLH)
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Sirtinol attenuates trauma hemorrhage-induced hepatic injury through Akt-dependent pathway in rats. J Trauma Acute Care Surg 2013; 74:1027-32. [PMID: 23511141 DOI: 10.1097/ta.0b013e3182858389] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Recent evidences show that sirtinol possesses anti-inflammatory properties and protective effects after shocklike states, but the mechanism of these effects remains unknown. Akt (also known as protein kinase B) exerts anti-inflammatory effects in injury. The aim of this study was to investigate whether Akt plays any role in the sirtinol-mediated attenuation of hepatic injury after trauma hemorrhage. METHODS Male Sprague-Dawley rats underwent trauma hemorrhage (mean blood pressure maintained at approximately 35-40 mm Hg for 90 minutes), followed by fluid resuscitation. During resuscitation, a single dose of sirtinol (1 mg/kg i.v.) with and without a PI3K inhibitor wortmannin (1 mg/kg i.v.), wortmannin, or vehicle was administered. Plasma alanine aminotransferase with aspartate aminotransferase (AST) concentrations and various hepatic parameters were measured (n = 8 rats per group) at 24 h after resuscitation. One-way analysis of variance and Tukey testing were used for statistical analysis. RESULTS Trauma hemorrhage increased hepatic myeloperoxidase activity, intercellular adhesion molecule-1 (ICAM-1) and interleukin-6 levels, and plasma alanine aminotransferase and aspartate aminotransferase concentrations. These parameters were significantly improved in the sirtinol-treated rats subjected to trauma hemorrhage. Sirtinol treatment also increased hepatic phospho-Akt expression compared with vehicle-treated trauma-hemorrhaged rats. The coadministration of wortmannin with sirtinol abolished the sirtinol-induced beneficial effects on the above parameters and hepatic injury. CONCLUSION These results suggest the protective effect of sirtinol administration on the alleviation of hepatic injury after trauma hemorrhage, which is, at least in part, through Akt-dependent pathway.
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Resuscitation after hemorrhagic shock: the effect on the liver--a review of experimental data. J Anesth 2012; 27:447-60. [PMID: 23275009 DOI: 10.1007/s00540-012-1543-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Accepted: 12/05/2012] [Indexed: 12/30/2022]
Abstract
The liver is currently considered to be one of the first organs to be subjected to the hypoxic insult inflicted by hemorrhagic shock. The oxidative injury caused by resuscitation also targets the liver and can lead to malfunction and the eventual failure of this organ. Each of the various fluids, vasoactive drugs, and pharmacologic substances used for resuscitation has its own distinct effect(s) on the liver, and the anesthetic agents used during surgical resuscitation also have an impact on hepatocytes. The aim of our study was to identify the specific effect of these substances on the liver. To this end, we conducted a literature search of MEDLINE for all types of articles published in English, with a focus on articles published in the last 12 years. Our search terms were "hemorrhagic shock," "liver," "resuscitation," "vasopressors," and "anesthesia." Experimental studies form the majority of articles found in bibliographic databases. The effect of a specific resuscitation agent on the liver is assessed mainly by measuring apoptotic pathway regulators and inflammation-induced indicators. Apart from a wide range of pharmacological substances, modifications of Ringer's Lactate, colloids, and pyruvate provide protection to the liver after hemorrhage and resuscitation. In this setting, it is of paramount importance that the treating physician recognize those agents that may attenuate liver injury and avoid using those which inflict additional damage.
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Liu FC, Yu HP, Hwang TL, Tsai YF. Protective effect of tropisetron on rodent hepatic injury after trauma-hemorrhagic shock through P38 MAPK-dependent hemeoxygenase-1 expression. PLoS One 2012; 7:e53203. [PMID: 23285267 PMCID: PMC3532400 DOI: 10.1371/journal.pone.0053203] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 11/26/2012] [Indexed: 01/15/2023] Open
Abstract
Tropisetron can decrease inflammatory cell responses and alleviate organ damage caused by trauma-hemorrhage, but the mechanism of these effects remains unknown. The p38 mitogen-activated protein kinase/hemeoxygenase-1 (p38 MAPK/HO-1) pathway exerts anti-inflammatory effects on different tissues. The aim of this study was to investigate whether p38 MAPK/HO-1 plays any role in the tropisetron-mediated attenuation of hepatic injury after trauma-hemorrhage. Male Sprague-Dawley rats underwent trauma-hemorrhage (mean blood pressure maintained at approximately 35–40 mmHg for 90 min), followed by fluid resuscitation. During resuscitation, several treatment regimens were administered: four doses of tropisetron alone (0.1, 0.3, 1, 3 mg/kg body weight), or a single dose of tropisetron (1 mg/kg body weight) with and without a p38 MAPK inhibitor (SB-203580, 2 mg/kg body weight) or HO antagonist (chromium-mesoporphyrin, 2.5 mg/kg body weight). Various parameters were measured, and the animals were sacrificed at 24 h post-resuscitation. The results showed that trauma-hemorrhage increased the following parameters: plasma concentrations of aspartate (AST) and alanine aminotransferases (ALT), hepatic myeloperoxidase (MPO) activity, and levels of cytokine-induced neutrophil chemoattractant-1 and -3 (CINC-1 and CINC-3), intercellular adhesion molecule-1 (ICAM-1), interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and macrophage inflammatory protein-1α (MIP-1α). These parameters were significantly improved in the tropisetron-treated rats subjected to trauma-hemorrhage. Tropisetron treatment also increased hepatic p38 MAPK and HO-1 expression compared with vehicle-treated trauma-hemorrhaged rats. Co-administration of SB-203580 or chromium-mesoporphyrin with tropisetron abolished the tropisetron-induced beneficial effects on the above parameters and hepatic injury. These results suggest that the protective effect of tropisetron administration on alleviation of hepatic injury after trauma-hemorrhage is likely mediated through p38 MAPK-dependent HO-1 expression.
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Affiliation(s)
- Fu-Chao Liu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Huang-Ping Yu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- * E-mail:
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, Chang Gung University, Taoyuan, Taiwan
| | - Yung-Fong Tsai
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
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Abstract
Tropisetron is widely used for antiemesis. Recent evidence shows that tropisetron possesses anti-inflammatory properties. Protein kinase B (Akt) is known to play an important role in negating proinflammatory response in injury. The aim of this study was to determine whether tropisetron provides cardioprotection mediated via an Akt-dependent pathway in trauma-hemorrhaged animals. Male Sprague-Dawley rats underwent trauma-hemorrhage and resuscitation. Tropisetron (1 mg/kg) with or without a PI3K inhibitor (wortmannin, 1 mg/kg) or vehicle was administered intravenously during the resuscitation. At 24 h after either the trauma-hemorrhage or sham operation, the cardiac function parameters (cardiac output, left ventricle pressure variability) were measured. Cardiac myeloperoxidase activity, interleukin 6 and intercellular adhesion molecule 1 levels, Akt activity, and apoptosis were measured. One-way analysis of variance and Tukey test were used for statistical analysis. Cardiac function was depressed and cardiac myeloperoxidase activity, interleukin 6 and intercellular adhesion molecule 1 levels, and cardiac apoptosis were markedly increased after trauma-hemorrhage. Administration of tropisetron significantly improved cardiac function and proinflammatory parameters in the tropisetron-treated rats subjected to trauma-hemorrhage. The increase in cardiac apoptosis was attenuated in rats that received tropisetron. Although trauma-hemorrhage decreased cardiac Akt phosphorylation (p-Akt), tropisetron treatment prevented the same decrease in cardiac p-Akt following trauma-hemorrhage. Coadministration of wortmannin prevented the beneficial effects of tropisetron on the attenuation of proinflammatory responses and cardiac injury after trauma-hemorrhage. Tropisetron attenuates cardiac injury following trauma-hemorrhage, which is, at least in part, through Akt-dependent anti-inflammatory pathway.
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Mechanism of salutary effects of astringinin on rodent hepatic injury following trauma-hemorrhage: Akt-dependent hemeoxygenase-1 signaling pathways. PLoS One 2011; 6:e25907. [PMID: 22022464 PMCID: PMC3191154 DOI: 10.1371/journal.pone.0025907] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 09/13/2011] [Indexed: 12/21/2022] Open
Abstract
Astringinin can attenuate organ injury following trauma-hemorrhage, the mechanism remains unknown. Protein kinase B/hemeoxygenase-1 (Akt/HO-1) pathway exerts potent anti-inflammatory effects in various tissues. The aim of this study is to elucidate whether Akt/HO-1 plays any role in astringinin-mediated attenuation of hepatic injury following trauma-hemorrhage. For study this, male Sprague-Dawley rats underwent trauma-hemorrhage (mean blood pressure 35–40 mmHg for 90 min) followed by fluid resuscitation. A single dose of astringinin (0.3 mg/kg body weight) with or without a PI3K inhibitor (wortmannin) or a HO antagonist (chromium-mesoporphyrin) was administered during resuscitation. Various parameters were measured at 24 h post-resuscitation. Results showed that trauma-hemorrhage increased plasma aspartate and alanine aminotransferases (AST and ALT) concentrations and hepatic myeloperoxidase activity, cytokine induced neutrophil chemoattractant (CINC)-1, CINC-3, intercellular adhesion molecule-1, and interleukin-6 levels. These parameters were significantly improved in the astringinin-treated rats subjected to trauma-hemorrhage. Astringinin treatment also increased hepatic Akt activation and HO-1 expression as compared with vehicle-treated trauma-hemorrhaged rats. Co-administration of wortmannin or chromium-mesoporphyrin abolished the astringinin-induced beneficial effects on post-resuscitation pro-inflammatory responses and hepatic injury. These findings collectively suggest that the salutary effects of astringinin administration on attenuation of hepatic injury after trauma-hemorrhage are likely mediated via Akt dependent HO-1 up-regulation.
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Role of estrogen receptor-dependent upregulation of P38 MAPK/heme oxygenase 1 in resveratrol-mediated attenuation of intestinal injury after trauma-hemorrhage. Shock 2011; 35:517-23. [PMID: 21192278 DOI: 10.1097/shk.0b013e318209e931] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Resveratrol protects against organ injury caused by trauma-hemorrhage, although the mechanism remains unknown. We have previously shown that it exerts protective effects in the liver via estrogen receptors and their signaling. Thus, we set out to determine whether resveratrol-mediated estrogen receptor-dependent p38 mitogen-activated protein kinase (MAPK)/heme oxygenase 1 activation protects the intestine after trauma-hemorrhage. To study this, male Sprague-Dawley rats underwent trauma-hemorrhage (mean blood pressure, ~ 40 mmHg for 90 min) followed by fluid resuscitation. Animals were pretreated with an estrogen receptor antagonist (ICI 182,780), a specific p38 MAPK inhibitor (SB-203580), or a heme oxygenase enzyme antagonist (chromium-mesoporphyrin) 30 min before vehicle or resveratrol (30 mg/kg) administration, followed by resuscitation, and were killed 2 h thereafter. Intestinal water content, myeloperoxidase activity, and TNF-α, IL-6, intercellular adhesion molecule 1, cytokine-induced neutrophil chemoattractant (CINC) 1, and CINC-3 levels and edema of the lung were measured. Mean arterial blood pressure, cardiac output, positive maximal pressure of left ventricular increase (+dP/dtmax), and negative maximal pressure of left ventricular decrease (-dP/dtmax) were also determined. Intestinal p38 MAPK activity and heme oxygenase 1 expression were also determined. Trauma-hemorrhage led to an increase in intestinal water content, myeloperoxidase activity, and TNF-α, IL-6, intercellular adhesion molecule 1, CINC-1, and CINC-3 levels. This was accompanied by a decrease in intestinal p38 MAPK activity. Administration of resveratrol improved all of the above parameters. Resveratrol treatment also increased intestinal heme oxygenase 1 expression as compared with vehicle-treated trauma-hemorrhaged rats. Administration of ICI 182,780, SB-203850, or chromium-mesoporphyrin with resveratrol abolished the resveratrol-mediated improvement of the above parameters. Resveratrol administration also attenuated trauma-hemorrhage-induced cardiac dysfunction and edema of the lung. These results suggest that estrogen receptor-dependent upregulation of the p38 MAPK/heme oxygenase 1 pathway plays a critical role in mediating the salutary effects of resveratrol on shock-induced intestinal injury.
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González R, Ballester I, López-Posadas R, Suárez MD, Zarzuelo A, Martínez-Augustin O, Sánchez de Medina F. Effects of flavonoids and other polyphenols on inflammation. Crit Rev Food Sci Nutr 2011; 51:331-62. [PMID: 21432698 DOI: 10.1080/10408390903584094] [Citation(s) in RCA: 345] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Flavonoids are a family of polyphenolic compounds which are widespread in nature (vegetables) and are consumed as part of the human diet in significant amounts. There are other types of polyphenols, including, for example, tannins and resveratrol. Flavonoids and related polyphenolic compounds have significant antiinflammatory activity, among others. This short review summarizes the current knowledge on the effects of flavonoids and related polyphenolic compounds on inflammation, with a focus on structural requirements, the mechanisms involved, and pharmacokinetic considerations. Different molecular (cyclooxygenase, lipoxygenase) and cellular targets (macrophages, lymphocytes, epithelial cells, endothelium) have been identified. In addition, many flavonoids display significant antioxidant/radical scavenging properties. There is substantial structural variation in these compounds, which is bound to have an impact on their biological profile, and specifically on their effects on inflammatory conditions. However, in general terms there is substantial consistency in the effects of these compounds despite considerable structural variations. The mechanisms have been studied mainly in myeloid cells, where the predominant effect is an inhibition of NF-κB signaling and the downregulation of the expression of proinflammatory markers. At present there is a gap in knowledge of in vitro and in vivo effects, although the pharmacokinetics of flavonoids has advanced considerably in the last decade. Many flavonoids have been studied for their intestinal antiinflammatory activity which is only logical, since the gastrointestinal tract is naturally exposed to them. However, their potential therapeutic application in inflammation is not restricted to this organ and extends to other sites and conditions, including arthritis, asthma, encephalomyelitis, and atherosclerosis, among others.
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Affiliation(s)
- R González
- Department of Pharmacology, CIBERehd, School of Pharmacy, University of Granada, Granada, Spain
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Tsai YF, Liu FC, Lau YT, Yu HP. Role of Akt-dependent pathway in resveratrol-mediated cardioprotection after trauma-hemorrhage. J Surg Res 2011; 176:171-7. [PMID: 21764074 DOI: 10.1016/j.jss.2011.05.039] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Revised: 05/10/2011] [Accepted: 05/24/2011] [Indexed: 01/27/2023]
Abstract
BACKGROUND Resveratrol has been shown to have protective effects for patients in shock-like states, and Akt (protein kinase B) is known to play a role in pro-inflammatory events in response to injury. The aim of this study is to determine whether resveratrol provides cardioprotection mediated via an Akt-dependent pathway in trauma-hemorrhaged animals. METHODS Male Sprague-Dawley rats underwent trauma-hemorrhage and resuscitation. A single dose of resveratrol (30 mg/kg body weight) with or without a PI3K inhibitor (wortmannin) or vehicle was administered intravenously during the resuscitation. Two hours after either the trauma-hemorrhage or sham operation, the cardiac output, the positive maximal pressure increase of the left ventricle (+dP/dt(max)), and the negative maximal pressure decrease of the left ventricle (-dP/dt(max)) were measured. Cardiac myeloperoxidase (MPO) activity, interleukin (IL)-6, and intercellular adhesion molecule (ICAM)-1 levels, Akt activity, and apoptosis were measured. One-way ANOVA and Tukey's test were used for statistical analysis. RESULTS Cardiac output and ± dP/dt(max) decreased significantly after trauma-hemorrhage. Administration of resveratrol significantly improved these cardiac function parameters. Trauma-hemorrhage increased cardiac MPO activity, IL-6 levels, and ICAM-1 levels, and these parameters were significantly improved in the resveratrol-treated rats subjected to trauma-hemorrhage. Although trauma-hemorrhage decreased cardiac Akt phosphorylation (p-Akt), resveratrol treatment following trauma-hemorrhage prevented the same decrease in cardiac p-Akt. The increase in cardiac apoptosis was attenuated in rats that received resveratrol. Co-administration of wortmannin prevented the beneficial effects of resveratrol on the attenuation of pro-inflammatory responses and cardiac injury after trauma-hemorrhage. CONCLUSION Resveratrol attenuates cardiac injury following trauma-hemorrhage, which is, at least in part, due to its anti-inflammatory effects via Akt-dependent pathways.
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Affiliation(s)
- Yung-Fong Tsai
- Department of Anesthesiology, Chang Gung Memorial Hospital, Chang Gung University, Tao-Yuan, Taiwan
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Yu HP, Hsieh PW, Chang YJ, Chung PJ, Kuo LM, Hwang TL. 2-(2-Fluorobenzamido)benzoate ethyl ester (EFB-1) inhibits superoxide production by human neutrophils and attenuates hemorrhagic shock-induced organ dysfunction in rats. Free Radic Biol Med 2011; 50:1737-48. [PMID: 21457779 DOI: 10.1016/j.freeradbiomed.2011.03.026] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Revised: 03/02/2011] [Accepted: 03/23/2011] [Indexed: 12/20/2022]
Abstract
Neutrophil activation after trauma-hemorrhagic shock (T/H) has been implicated in the development of multiple organ dysfunction (MOD). In this study, we report that a small chemical compound, 2-(2-fluorobenzamido)benzoic acid ethyl ester (EFB-1), exhibited a potent inhibitory effect on the formyl-L-methionyl-L-leucyl-L-phenylalanine (FMLP)-induced superoxide anion (O2•-) release and CD11b expression by human neutrophils. Additionally, administration of EFB-1 in rats subjected to T/H caused a significant improvement in MOD. EFB-1 treatment induced an increase in cAMP formation and protein kinase (PK) A activity in FMLP-activated neutrophils, which occurred through the selective inhibition of cAMP-specific phosphodiesterase (PDE) activity but not an increase in adenylate cyclase function or cGMP-specific PDE activity. FMLP-induced phosphorylation of protein kinase B (AKT), but not calcium mobilization, was reduced by EFB-1. The inhibitory effects of EFB-1 on O(2•-) production, CD11b expression, and AKT phosphorylation were reversed by PKA inhibitors (H89 and KT5720). Significantly, administration of EFB-1 (1 mg/kg body wt) attenuated the myeloperoxidase activity of the intestines, lungs, and liver and reduced the wet/dry weight ratio of the intestines and lungs and plasma alanine aminotransferase and aspartate aminotransferase levels in Sprague-Dawley rats after T/H. Therefore, EFB-1 is a new inhibitor of cAMP-specific PDE that potently suppresses O(2•-) release and CD11b expression by human neutrophils and attenuates T/H-induced MOD in rats.
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Affiliation(s)
- Huang-Ping Yu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
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Ondansetron attenuates hepatic injury via p38 MAPK-dependent pathway in a rat haemorrhagic shock model. Resuscitation 2010; 82:335-40. [PMID: 21168948 DOI: 10.1016/j.resuscitation.2010.11.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Revised: 11/01/2010] [Accepted: 11/16/2010] [Indexed: 02/08/2023]
Abstract
BACKGROUND Ondansetron is a 5-HT3 receptor antagonist with potent antiemetic, analgesic, and antiphlogistic effects. Recent evidence suggests that the co-existence of 5-HT3 receptors in various cell types is involved in inflammation. However, the effects that 5-HT3 antagonists produce in haemorrhagic shock and resuscitation remain unknown. In this study, we hypothesized that ondansetron administration in male rats, after haemorrhagic shock, decreases cytokine production and protects against hepatic injury through a p38 mitogen-activated protein kinase (MAPK) pathway. METHODS Male Sprague-Dawley rats underwent haemorrhagic shock (mean arterial blood pressure 40 mm Hg for 90 min), followed by resuscitation. Various doses of ondansetron (0.1, 0.3, 1, 3 mg kg(-1)) or a single dose of ondansetron (1 mg kg(-1)) with or without a p38 MAPK inhibitor (SB-203580, 2 mg kg(-1)) or vehicle were administered intravenously during resuscitation. Plasma aspartate aminotransferase (AST) and alanine aminotransferase (ALT) concentrations and various liver proinflammatory parameters were measured at 24h after resuscitation. RESULTS Results show that haemorrhagic shock increases plasma AST and ALT concentrations, hepatic myeloperoxidase activity, cytokine-induced neutrophil chemoattractant (CINC)-1, CINC-3, intercellular adhesion molecule-1 (ICAM-1), interleukin-6 (IL-6) and tumor necrosis factor α (TNF-α) levels. These parameters were significantly improved in the ondansetron-treated rats subjected to haemorrhagic shock. Ondansetron treatment restored phos-p38 MAPK expression as compared with vehicle-treated haemorrhaged rats. Coadministration of SB-203580 prevented the beneficial effects of ondansetron on postresuscitation proinflammatory responses and hepatic injury. CONCLUSION Ondansetron attenuates hepatic injury following haemorrhagic shock, which is, at least in part, to be due to its anti-inflammatory effect via p38 MAPK signal pathway.
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Resveratrol prevents endothelial dysfunction and aortic superoxide production after trauma hemorrhage through estrogen receptor-dependent hemeoxygenase-1 pathway. Crit Care Med 2010; 38:1147-54. [PMID: 20081535 DOI: 10.1097/ccm.0b013e3181cd124e] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
OBJECTIVE To determine whether resveratrol provides vasculoprotection in trauma-hemorrhaged animals and whether the effects are mediated via estrogen receptor-dependent hemeoxygenase-1. DESIGN Prospective, multiexperimental, randomized, controlled studies. SETTING University research laboratory. SUBJECTS Male Sprague-Dawley rats weighing 300-350 g. INTERVENTIONS Male Sprague-Dawley rats underwent trauma hemorrhage (mean arterial pressure 40 mm Hg for 90 min, then resuscitation). Resveratrol (30 mg/kg) with or without an estrogen receptor antagonist (ICI 182,780), a hemeoxygenase enzyme inhibitor (chromium-mesoporphyrin), or vehicle was injected during resuscitation. At 24 hrs after trauma hemorrhage with resuscitation or sham operation, the animals were euthanized for further evaluation. MEASUREMENTS AND MAIN RESULTS Acetylcholine-induced endothelium-dependent relaxation decreased, whereas nicotinamide adenine dinucleotide-stimulated superoxide radical production in the aorta and aortic p22phox, p47phox, gp91phox, NOX1, and NOX4 mRNA concentrations increased in trauma-hemorrhaged rats vs. sham rats. All altered parameters were normalized in resveratrol-treated trauma-hemorrhaged rats. Furthermore, there was a significant increase in hemeoxygenase-1 after trauma hemorrhage, and resveratrol treatment further increased hemeoxygenase-1 expression in trauma-hemorrhaged rats. However, administration of ICI 182,780 or chromium-mesoporphyrin abolished the resveratrol-induced prevention of shock-induced oxidative stress and endothelial damage. In the resveratrol-treated rats subjected to trauma hemorrhage, there were significant improvements in plasma aspartate aminotransferase and alanine aminotransferase levels, and mortality rate, and there was lesser damage in histology. CONCLUSIONS Resveratrol treatment prevented the overproduction of superoxide radical/NADPH oxidase expression and restored the trauma-hemorrhage-impaired endothelium-dependent relaxation via estrogen receptor-dependent stimulation of hemeoxygenase-1 expression.
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Chou SH, Lee YC, Huang CF, Wang YR, Yu HP, Lau YT. Gender-specific effects of caloric restriction on the balance of vascular nitric oxide and superoxide radical. Cardiovasc Res 2010; 87:751-9. [PMID: 20348138 DOI: 10.1093/cvr/cvq095] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
AIMS Caloric restriction (CR) and female gender attenuate oxidative damage and improve vascular endothelium-dependent relaxation (EDR). Multiple mechanisms that ameliorate vascular O(2)(*-) could enhance the NO(*)/O(2)(*-) balance and thus improve EDR. The aim of this study is to compare the effects of short-term (2 weeks) CR and gender on molecular mechanisms involved in NO(*)/O(2)(*-) balance and EDR. METHODS AND RESULTS Wistar rats (8 weeks old) of both genders were fed ad libitum (control) or were subjected to CR (60% of food intake of controls) for 2 weeks. Plasma levels of NO(*), insulin, and ghrelin, EDR, vascular NO(*) and O(2)(*-) production, as well as endothelial NO(*) synthase (eNOS) and NADPH oxidase (Nox) expression were examined and analysed. CR improved EDR and vascular NO(*) levels and ameliorated NADPH-sensitive O(2)(*-) production in male rats more than in females. Both CR and female gender reduced mRNA expression of Nox1 and Nox p22phox (p22phox); however, CR reduced Nox4 and p47phox only in males. Protein expression studies showed that CR enhanced eNOS and reduced Nox4 only in males. CONCLUSION Short-term CR improved the NO(*)/O(2)(*-) balance by lowering vascular O(2)(*-) production through decreased expression of Nox in males, thus enhancing bioactive NO(*) levels and EDR. In this regard, CR shifted the state of vascular NO(*)/O(2)(*-) balance in males to a state similar to that in females.
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Affiliation(s)
- Shih-Hsuan Chou
- Department of Physiology and Pharmacology, Chang Gung University, Taoyuan, Taiwan, Republic of China
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Role of Akt-dependent up-regulation of hemeoxygenase-1 in resveratrol-mediated attenuation of hepatic injury after trauma hemorrhage. Surgery 2010; 148:103-9. [PMID: 20117814 DOI: 10.1016/j.surg.2009.12.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2009] [Accepted: 12/07/2009] [Indexed: 11/21/2022]
Abstract
BACKGROUND Protein kinase B (Akt) is known to be involved in pro-inflammatory and chemotactic events in response to injury. Akt activation also leads to the induction of hemeoxygenase (HO)-1, which exerts potent anti-inflammatory effects. The aim of this study is to elucidate whether Akt/HO-1 plays any role in resveratrol-mediated attenuation of hepatic injury after trauma hemorrhage. METHODS Male Sprague-Dawley rats were subjected to trauma hemorrhage. A single dose of resveratrol (30-mg/kg body weight) with or without a PI3 K inhibitor (wortmannin) or an HO antagonist (chromium-mesoporphyrin) was administered intravenously during resuscitation. Various parameters were measured at 24 hours postresuscitation. RESULTS Results showed that trauma hemorrhage increased hepatic myeloperoxidase activity, cytokine-induced neutrophil chemoattractant (CINC)-1, CINC-3, intercellular adhesion molecule-1, and interleukin-6 levels and plasma aspartate and alanine aminotransferases concentrations. These parameters were significantly improved in the resveratrol-treated rats subjected to trauma hemorrhage. Resveratrol treatment also increased hepatic Akt activation and HO-1 expression as compared with vehicle-treated trauma hemorrhaged rats. Coadministration of wortmannin or chromium-mesoporphyrin prevented the beneficial effects of resveratrol administration on postresuscitation proinflammatory responses and hepatic injury. CONCLUSION These findings collectively suggest that the salutary effects of resveratrol administration on attenuation of hepatic injury after trauma hemorrhage are likely mediated via up-regulation of Akt-dependent HO-1 expression.
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Hassan-Khabbar S, Vamy M, Cottart CH, Wendum D, Vibert F, Savouret JF, Thérond P, Clot JP, Waligora AJ, Nivet-Antoine V. Protective effect of post-ischemic treatment with trans-resveratrol on cytokine production and neutrophil recruitment by rat liver. Biochimie 2009; 92:405-10. [PMID: 20036306 DOI: 10.1016/j.biochi.2009.12.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Accepted: 12/15/2009] [Indexed: 10/20/2022]
Abstract
Oxidative and inflammatory processes are elicited during hepatic post-ischemic reperfusion and generate liver damage. This study investigated the early anti-inflammatory effect of trans-resveratrol (T-res) and its consequences on the late self-aggravating inflammatory process in liver ischemia-reperfusion (I/R). Partial hepatic ischemia was initiated in rats for 1 h and T-res (0.02 and 0.2 mg/kg) was administered intravenously 5 min before starting reperfusion for 3 h. Plasma levels of aminotransferases and cytokines (tumour necrosis factor (TNF)-alpha, interleukin (IL)-1beta, IL-6) and hepatic neutrophil recruitment were assessed. Hepatic expression of stress protein (heat-shock protein (HSP-70), heme oxygenase-1(HO-1)) and cytokine (TNF-alpha, IL-1beta, keratinocyte chemoattractant (KC)) mRNA was investigated. I/R caused an increase in aminotransferase levels and increased polymorphonuclear cell infiltration. Post-ischemic treatment with T-res (0.02 and 0.2 mg/kg) resulted in a significant decrease in aminotransferase, IL-1beta and IL-6 plasma levels by about 40%, 60% and 40%, respectively, compared to the vehicle I/R group. Post-ischemic treatment with T-res (0.02 mg/kg) also significantly decreased hepatic neutrophil recruitment. TNF-alpha, IL-1beta, KC and HO-1 hepatic mRNA expression was reduced by T-res without any change in HSP-70 mRNA. This T-res mediated decrease in early release of cytokines and neutrophil recruitment led to a reduction in the late inflammatory process. T-resveratrol might be useful in the prevention of inflammation secondary to hepatic surgery or liver transplantation.
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Affiliation(s)
- Sahar Hassan-Khabbar
- Equipe d'Accueil 3617, Faculté de Pharmacie, Université Paris Descartes, 4 avenue de l'Observatoire, Paris, France
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What's new in Shock, September 2008? Shock 2008; 30:227-30. [PMID: 18708910 DOI: 10.1097/shk.0b013e318181002b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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