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Signal Pathways and Markers Involved in Acute Lung Injury Induced by Acute Pancreatitis. DISEASE MARKERS 2021; 2021:9947047. [PMID: 34497676 PMCID: PMC8419500 DOI: 10.1155/2021/9947047] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 07/10/2021] [Accepted: 08/18/2021] [Indexed: 12/23/2022]
Abstract
Acute pancreatitis (AP) is a common acute abdominal disease with a mortality rate of about 30%. Acute lung injury (ALI) is a common systemic complication of acute pancreatitis, with progressive hypoxemia and respiratory distress as the main manifestations, which can develop into acute respiratory distress syndrome or even multiple organ dysfunction syndrome (MODS) in severe cases, endangering human health. In the model of AP, pathophysiological process of the lung can be summarized as oxidative stress injury, inflammatory factor infiltration, and alveolar cell apoptosis. However, the intrinsic mechanisms underlying AP and how it leads to ALI are not fully understood. In this paper, we summarize recent articles related to AP leading to ALI, including the signal transduction pathways and biomarkers of AP-ALI. There are factors or pathway aggravating ALI, the JAK2-STAT3 signaling pathway, NLRP3/NF-κB pathway, mitogen-activated protein kinase, PKC pathway, neutrophil protease (NP)-LAMC2-neutrophil pathway, and the P2X7 pathway, and there are important transcription factors in the NRF2 signal transduction pathway which could give researchers better understanding of the underlying mechanisms controlling AP and ALI and lay the foundation for finally curing ALI induced by AP.
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Abbasian N, Ghaderi-Najafabadi M, Watson E, Brown J, Yu Si L, Bursnall D, Pawluczyk I, Seymour AM, Bevington A. Hepatic cysteine sulphinic acid decarboxylase depletion and defective taurine metabolism in a rat partial nephrectomy model of chronic kidney disease. BMC Nephrol 2021; 22:250. [PMID: 34225671 PMCID: PMC8256558 DOI: 10.1186/s12882-021-02442-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 06/04/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Taurine depletion occurs in patients with end-stage chronic kidney disease (CKD). In contrast, in the absence of CKD, plasma taurine is reported to increase following dietary L-glutamine supplementation. This study tested the hypothesis that taurine biosynthesis decreases in a rat CKD model, but is rectified by L-glutamine supplementation. METHODS CKD was induced by partial nephrectomy in male Sprague-Dawley rats, followed 2 weeks later by 2 weeks of 12% w/w L-glutamine supplemented diet (designated NxT) or control diet (NxC). Sham-operated control rats (S) received control diet. RESULTS Taurine concentration in plasma, liver and skeletal muscle was not depleted, but steady-state urinary taurine excretion (a measure of whole-body taurine biosynthesis) was strongly suppressed (28.3 ± 8.7 in NxC rats versus 78.5 ± 7.6 μmol/24 h in S, P < 0.05), accompanied by reduced taurine clearance (NxC 0.14 ± 0.05 versus 0.70 ± 0.11 ml/min/Kg body weight in S, P < 0.05). Hepatic expression of mRNAs encoding key enzymes of taurine biosynthesis (cysteine sulphinic acid decarboxylase (CSAD) and cysteine dioxygenase (CDO)) showed no statistically significant response to CKD (mean relative expression of CSAD and CDO in NxC versus S was 0.91 ± 0.18 and 0.87 ± 0.14 respectively). Expression of CDO protein was also unaffected. However, CSAD protein decreased strongly in NxC livers (45.0 ± 16.8% of that in S livers, P < 0.005). L-glutamine supplementation failed to rectify taurine biosynthesis or CSAD protein expression, but worsened CKD (proteinuria in NxT 12.5 ± 1.2 versus 6.7 ± 1.5 mg/24 h in NxC, P < 0.05). CONCLUSION In CKD, hepatic CSAD is depleted and taurine biosynthesis impaired. This is important in view of taurine's reported protective effect against cardio-vascular disease - the leading cause of death in human CKD.
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Affiliation(s)
- Nima Abbasian
- Department of Respiratory Sciences, University of Leicester, Leicester, LE1 7RH, UK.
- School of Life and Medical Sciences, University of Hertfordshire, Hertfordshire, UK.
| | | | - Emma Watson
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Jeremy Brown
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Li Yu Si
- Department of Respiratory Sciences, University of Leicester, Leicester, LE1 7RH, UK
| | - Debbie Bursnall
- Division of Biomedical Services, University of Leicester, Leicester, UK
| | - Izabella Pawluczyk
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | | | - Alan Bevington
- Department of Respiratory Sciences, University of Leicester, Leicester, LE1 7RH, UK.
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Carbon Monoxide-Releasing Molecule-3 Ameliorates Acute Lung Injury in a Model of Hemorrhagic Shock and Resuscitation: Roles of p38MAPK Signaling Pathway. Shock 2020; 55:816-826. [PMID: 33105439 DOI: 10.1097/shk.0000000000001684] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVE It was reported that carbon monoxide-releasing molecule-3 (CORM-3) administration immediately after hemorrhagic shock and resuscitation (HSR) ameliorates the HSR-induced acute lung injury (ALI); however, the specific mechanism of the protective effects against HSR-induced ALI remains unclear. METHODS To induce hemorrhagic shock, rats were bled to a mean arterial blood pressure of 30 mm Hg for 45 min and then resuscitated with shed blood via the left vein. CORM-3 (4 mg/kg or 8 mg/kg) was respectively administrated after HSR. Twelve hours post-HSR, lung injury was assessed by wet/dry (W/D) ratio, hematoxylin-eosin staining staining, and lung ultrasound; the apoptotic and pyroptotic macrophages were measured by immunofluorescence staining; and the expression of phosphorylated p38 mitogen activated protein kinase (p-p38MAPK) and total p38MAPK was measured by western blotting. SB203580 (5 mg/kg), a special inhibitor of p-p38MAPK, was administrated by abdominal cavity to assess the roles of p38MAPK in HSR-induced ALI. RESULTS Increased B-line score, lung injury score, and W/D ratio indicated the fact of ALI after HSR. Twelve hours post-HSR, CORM-3 administration significantly decreased the B-line score, lung injury score, W/D ratio, apoptotic and pyroptotic macrophages, and the expressions of p-p38MAPK. Further, SB203580 not only reduced HSR-induced ALI, but also enhanced the protective effects of CORM-3 against ALI. CONCLUSION We identified the protective effects of CORM-3 against HSR-induced ALI. The mechanism might be related to the inhibition of p38MAPK signaling pathway in lung macrophages.
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Ren Y, Cui Q, Bi J, Du Z, Zhang J, Zhang X, Lv Y, Wu R. WITHDRAWN: Stilamin inhibits intestinal and pancreatic injury in rats with severe acute pancreatitis by down-regulating LCN2 expression. Pancreatology 2018:S1424-3903(17)30915-8. [PMID: 29325893 DOI: 10.1016/j.pan.2017.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 12/23/2017] [Accepted: 12/28/2017] [Indexed: 12/11/2022]
Abstract
This article has been withdrawn at the request of the authors. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
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Affiliation(s)
- Yifan Ren
- Department of Hepatobiliary Surgery, Institute of Advanced Surgical Technology and Engineering, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China; Institute of Advanced Surgical Technology and Engineering, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Qing Cui
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Jianbin Bi
- Department of Hepatobiliary Surgery, Institute of Advanced Surgical Technology and Engineering, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China; Institute of Advanced Surgical Technology and Engineering, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Zhaoqing Du
- Department of Hepatobiliary Surgery, Institute of Advanced Surgical Technology and Engineering, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China; Institute of Advanced Surgical Technology and Engineering, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Jia Zhang
- Department of Hepatobiliary Surgery, Institute of Advanced Surgical Technology and Engineering, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China; Institute of Advanced Surgical Technology and Engineering, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Xufeng Zhang
- Department of Hepatobiliary Surgery, Institute of Advanced Surgical Technology and Engineering, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Yi Lv
- Department of Hepatobiliary Surgery, Institute of Advanced Surgical Technology and Engineering, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | - Rongqian Wu
- Institute of Advanced Surgical Technology and Engineering, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
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Wang P, Wang W, Shi Q, Zhao L, Mei F, Li C, Zuo T, He X. Paeoniflorin ameliorates acute necrotizing pancreatitis and pancreatitis‑induced acute renal injury. Mol Med Rep 2016; 14:1123-31. [PMID: 27279569 PMCID: PMC4940107 DOI: 10.3892/mmr.2016.5351] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 02/15/2016] [Indexed: 01/15/2023] Open
Abstract
Acute renal injury caused by acute necrotizing pancreatitis (ANP) is a common complication that is associated with a high rate of mortality. Paeoniflorin is the active ingredient of paeonia radix and exhibits a number of pharmacological effects, such as anti-inflammatory, anticancer, analgesic and immunomodulatory effects. The present study detected the potential treatment effects of paeoniflorin on acute renal injury induced by ANP in a rat model. The optimal dose of paeoniflorin for preventing acute renal injury induced by ANP was determined. Then, the possible protective mechanism of paeoniflorin was investigated. The serum levels of tumor necrosis factor (TNF)-α, interleukin (IL)-1β and IL-6 were measured with enzyme-linked immunosorbent assay kits. Renal inflammation and apoptosis were measured by immunohistochemistry and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling assay. The expression of nitric oxide in kidney tissues was also evaluated. The p38 mitogen-activated protein kinases (MAPKs) were measured by western blotting. The results shown that paeoniflorin may ameliorate acute renal injury following ANP in rats by inhibiting inflammatory responses and renal cell apoptosis. These effects may be associated with the p38MAPK and nuclear factor-κB signal pathway.
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Affiliation(s)
- Peng Wang
- Department of Hepatobiliary and Laparoscopic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Weixing Wang
- Department of Hepatobiliary and Laparoscopic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Qiao Shi
- Department of Hepatobiliary and Laparoscopic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Liang Zhao
- Department of Hepatobiliary and Laparoscopic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Fangchao Mei
- Department of Hepatobiliary and Laparoscopic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Chen Li
- Department of Hepatobiliary and Laparoscopic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Teng Zuo
- Department of Hepatobiliary and Laparoscopic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Xiaobo He
- Department of Hepatobiliary and Laparoscopic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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Shirai M, Arakawa S, Teranishi M, Kai K. Decreased hepatic phosphorylated p38 mitogen-activated protein kinase contributes to attenuation of thioacetamide-induced hepatic necrosis in diet-induced obese mice. J Toxicol Sci 2016; 41:245-53. [DOI: 10.2131/jts.41.245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Makoto Shirai
- Medicinal Safety Research Laboratories, Daiichi Sankyo Co., Ltd
| | - Shingo Arakawa
- Medicinal Safety Research Laboratories, Daiichi Sankyo Co., Ltd
| | | | - Kiyonori Kai
- Medicinal Safety Research Laboratories, Daiichi Sankyo Co., Ltd
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Fu J, Zhang H, Zhuang Y, Liu H, Shi Q, Li D, Ju X. The role of N-acetyltransferase 8 in mesenchymal stem cell-based therapy for liver ischemia/reperfusion injury in rats. PLoS One 2014; 9:e103355. [PMID: 25057902 PMCID: PMC4109999 DOI: 10.1371/journal.pone.0103355] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Accepted: 06/29/2014] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE To evaluate the impact of mesenchymal stem cells (MSCs) against hepatic I/R injury and explore the role of N-acetyltransferase 8 (NAT8) in the process. METHODS We investigated the potential of injected MSCs systemically via the tail vein in healing injuried liver of the SD rat model of 70% hepatic I/R injury by measuring the biochemical and pathologic alterations. Subsequently, we evaluated the expression levels of NAT8 by western blotting in vivo. Concurrently, hydrogen peroxide (H2O2)-induced apoptosis in the human normal liver cell line L02 was performed in vitro to evaluate the protective effects of MSC conditioned medium (MSC-CM) on L02 cells. In addition, we downregulated and upregulated NAT8 expression in L02 cells and induced apoptosis by using H2O2 to study the protective role of NAT8. RESULTS MSCs implantation led to a significant reduced liver enzyme levels, an advanced protection in the histopathological findings of the acutely injured liver and a significantly lower percentage of TUNEL-positive cells, which were increased after I/R injury. In vitro assays, MSC-CM inhibited hepatocyte apoptosis induced by H2O2. Moreover, overexpression or downregulation of NAT8 prevented or aggravated hepatocyte apoptosis induced by H2O2, respectively. CONCLUSIONS MSC transplantation provides support to the I/R-injured liver by inhibiting hepatocellular apoptosis and stimulating NAT8 regeneration.
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Affiliation(s)
- Jinqiu Fu
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, P.R. China
| | - Haiyan Zhang
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, P.R. China
| | - Yong Zhuang
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, P.R. China
| | - Huan Liu
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, P.R. China
| | - Qing Shi
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, P.R. China
| | - Dong Li
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, P.R. China
- * E-mail: (XJ); (DL)
| | - Xiuli Ju
- Department of Pediatrics, Qilu Hospital, Shandong University, Jinan, P.R. China
- * E-mail: (XJ); (DL)
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Ding N, Chen G, Hoffman R, Loughran PA, Sodhi CP, Hackam DJ, Billiar TR, Neal MD. Toll-like receptor 4 regulates platelet function and contributes to coagulation abnormality and organ injury in hemorrhagic shock and resuscitation. ACTA ACUST UNITED AC 2014; 7:615-24. [PMID: 25049041 DOI: 10.1161/circgenetics.113.000398] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Growing evidence indicates that the presence of toll-like receptor 4 (TLR4) on platelets is a key regulator of platelet number and function. Platelets exposed to TLR4 agonists may serve to activate other cells such as neutrophils and endothelial cells in sepsis and other inflammatory conditions. The functional significance of platelet TLR4 in hemorrhagic shock (HS), however, remains unexplored. METHODS AND RESULTS Using thromboelastography and platelet aggregometry, we demonstrate that platelet function is impaired in a mouse model of HS with resuscitation. Further analysis using cellular-specific TLR4 deletion in mice revealed that platelet TLR4 is essential for platelet activation and function in HS with resuscitation and that platelet TLR4 regulates the development of coagulopathy after hemorrhage and resuscitation. Transfusion of TLR4-negative platelets into mice resulted in protection from coagulopathy and restored platelet function. Additionally, platelet-specific TLR4 knockout mice were protected from lung and liver injury and exhibited a marked reduction in systemic inflammation as measured by circulating interleukin-6 after HS with resuscitation. CONCLUSIONS We demonstrate for the first time that platelet TLR4 is an essential mediator of the inflammatory response as well as platelet activation and function in HS and resuscitation.
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Affiliation(s)
- Ning Ding
- From the Department of Surgery, University of Pittsburgh, PA (N.D., G.C., R.H., P.A.L., T.R.B., M.D.N.); Department of Anesthesiology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, People's Republic of China (N.D.); Department of Anesthesiology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, People's Republic of China (G.C.); and Division of Pediatric Surgery, Department of Surgery, Children's Hospital of Pittsburgh of UPMC, PA (C.P.S., D.J.H.)
| | - Guoqiang Chen
- From the Department of Surgery, University of Pittsburgh, PA (N.D., G.C., R.H., P.A.L., T.R.B., M.D.N.); Department of Anesthesiology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, People's Republic of China (N.D.); Department of Anesthesiology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, People's Republic of China (G.C.); and Division of Pediatric Surgery, Department of Surgery, Children's Hospital of Pittsburgh of UPMC, PA (C.P.S., D.J.H.)
| | - Rosemary Hoffman
- From the Department of Surgery, University of Pittsburgh, PA (N.D., G.C., R.H., P.A.L., T.R.B., M.D.N.); Department of Anesthesiology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, People's Republic of China (N.D.); Department of Anesthesiology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, People's Republic of China (G.C.); and Division of Pediatric Surgery, Department of Surgery, Children's Hospital of Pittsburgh of UPMC, PA (C.P.S., D.J.H.)
| | - Patricia A Loughran
- From the Department of Surgery, University of Pittsburgh, PA (N.D., G.C., R.H., P.A.L., T.R.B., M.D.N.); Department of Anesthesiology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, People's Republic of China (N.D.); Department of Anesthesiology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, People's Republic of China (G.C.); and Division of Pediatric Surgery, Department of Surgery, Children's Hospital of Pittsburgh of UPMC, PA (C.P.S., D.J.H.)
| | - Chhinder P Sodhi
- From the Department of Surgery, University of Pittsburgh, PA (N.D., G.C., R.H., P.A.L., T.R.B., M.D.N.); Department of Anesthesiology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, People's Republic of China (N.D.); Department of Anesthesiology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, People's Republic of China (G.C.); and Division of Pediatric Surgery, Department of Surgery, Children's Hospital of Pittsburgh of UPMC, PA (C.P.S., D.J.H.)
| | - David J Hackam
- From the Department of Surgery, University of Pittsburgh, PA (N.D., G.C., R.H., P.A.L., T.R.B., M.D.N.); Department of Anesthesiology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, People's Republic of China (N.D.); Department of Anesthesiology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, People's Republic of China (G.C.); and Division of Pediatric Surgery, Department of Surgery, Children's Hospital of Pittsburgh of UPMC, PA (C.P.S., D.J.H.)
| | - Timothy R Billiar
- From the Department of Surgery, University of Pittsburgh, PA (N.D., G.C., R.H., P.A.L., T.R.B., M.D.N.); Department of Anesthesiology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, People's Republic of China (N.D.); Department of Anesthesiology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, People's Republic of China (G.C.); and Division of Pediatric Surgery, Department of Surgery, Children's Hospital of Pittsburgh of UPMC, PA (C.P.S., D.J.H.).
| | - Matthew D Neal
- From the Department of Surgery, University of Pittsburgh, PA (N.D., G.C., R.H., P.A.L., T.R.B., M.D.N.); Department of Anesthesiology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, People's Republic of China (N.D.); Department of Anesthesiology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, People's Republic of China (G.C.); and Division of Pediatric Surgery, Department of Surgery, Children's Hospital of Pittsburgh of UPMC, PA (C.P.S., D.J.H.).
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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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Xia Z, Jiang K, Liu T, Zheng H, Liu X, Zheng X. The protective effect of Cold-inducible RNA-binding protein (CIRP) on testicular torsion/detorsion: an experimental study in mice. J Pediatr Surg 2013; 48:2140-7. [PMID: 24094970 DOI: 10.1016/j.jpedsurg.2013.02.065] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 02/19/2013] [Accepted: 02/20/2013] [Indexed: 11/17/2022]
Abstract
PURPOSE To evaluate the expression of Cold-inducible RNA-binding protein (CIRP) in torsion/detorsion of the testes in different phases and demonstrate the protective effect of CIRP on testicular injury after torsion/detorsion (T/D) in an experimental mouse model. METHODS Twenty-four male BALB/c mice were divided randomly into 8 groups: normal control group (N), sham-operated group (S), torsion 2 h group (T2h), torsion/detorsion 12 h group (T/D12h), and T/D24h, T/D48h, T/D72h, and T/D96h groups. The testes were examined for the expression levels of CIRP. Another 32 male BALB/c mice were divided randomly in to 4 groups: normal control group (N), T/D group, T/D+pcDNA3.1 group, and T/D + pcDNA3.1-CIRP group. The plasmids were transfected into testes with in vivo-jetPEI. After 3 days, morphological changes, mean seminiferous tubule diameter (MSTD), and the number of the germ cell layers were observed. Superoxide dismutase (SOD) activity, the levels of malondialdehyde (MDA), and Bcl-2/Bax ratios were studied in the different groups. RESULTS Compared with the N and S groups, the expression of CIRP in the T2h group was down-regulated. In T/D groups, the levels of CIRP were reduced in a time dependent manner. Compared to T/D and T/D+pcDNA3.1 group, the MSTD, number of the germ cell layers, SOD activity, and Bcl-2/Bax ratio increased in T/D + pcDNA3.1-CIRP group, while the level of MDA decreased. CONCLUSIONS The results of our study have shown that down-regulated CIRP is involved in testicular injury after testicular torsion/detorsion. Up-regulation of the expression of CIRP may reduce the damage caused by torsion/detorsion, possibly by preventing germ cell oxidative stress and apoptosis.
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Affiliation(s)
- Zhiping Xia
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, P.R. China
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Li HB, Wang GZ, Gong J, Wu ZY, Guo S, Li B, Liu M, Ji YD, Tang M, Yuan SY, Shang Y, Yao SL. BML-111 attenuates hemorrhagic shock-induced acute lung injury through inhibiting activation of mitogen-activated protein kinase pathway in rats. J Surg Res 2013; 183:710-9. [PMID: 23558258 DOI: 10.1016/j.jss.2013.03.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 02/27/2013] [Accepted: 03/01/2013] [Indexed: 12/22/2022]
Abstract
BACKGROUND Hemorrhagic shock activates cellular stress signals and can lead to systemic inflammatory response, organ injury, and death. Mitogen-activated protein kinase (MAPK) acts as a sensor of tissue injury in models of ischemia-reperfusion injury. Lipoxins are endogenous lipid mediators with potent anti-inflammatory and pro-resolving actions. We hypothesized that BML-111 (a lipoxin A4-receptor agonist) attenuates hemorrhagic shock-induced acute lung injury (ALI) through inhibiting activation of the MAPK pathway. METHODS We randomized Sprague-Dawley rats into four groups: sham, hemorrhagic shock-resuscitation (HS), HS plus BML-111 (BML-111), and HS plus BML-111 and BOC-2 (BOC-2). Two hours after resuscitation, we collected samples of lung. We obtained bronchoalveolar lavage fluid for neutrophil count. We performed optical microscopy to examine pathologic changes in lungs. Wet/dry ratios, myeloperoxidase expression, interleukin (IL)-1β and IL-6 levels in lung were measured. We evaluated MAPK activation and the DNA binding activity of activator protein-1 in lung. RESULTS Treatment with BML-111 reduced the lung damage and wet/dry ratio, neutrophil count in bronchoalveolar lavage fluid, expression of myeloperoxidase, and production of IL-1β and IL-6 in lung. Phosphorylation of MAPK was also decreased by BML-111 in lung. Furthermore, the DNA binding activity of activator protein-1 was blocked by BML-111. An antagonist of the lipoxin A4-receptor, BOC-2, reversed the protective effect of BML-111 on ALI induced by hemorrhagic shock. CONCLUSIONS This study indicates that BML-111 attenuated hemorrhagic shock-induced ALI via the MAPK/activator protein-1 signaling pathway. Therefore, BML-111 may have therapeutic potential for hemorrhagic shock-induced ALI.
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Affiliation(s)
- Hong-Bin Li
- Department of Critical Care Medicine, Institute of Anesthesia and Critical Care, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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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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