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Cao JK, Hong XY, Feng ZC, Li QP. Mesenchymal stem cells-based therapies for severe ARDS with ECMO: a review. Intensive Care Med Exp 2024; 12:12. [PMID: 38332384 PMCID: PMC10853094 DOI: 10.1186/s40635-024-00596-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 01/11/2024] [Indexed: 02/10/2024] Open
Abstract
Acute respiratory distress syndrome (ARDS) is the primary cause of respiratory failure in critically ill patients. Despite remarkable therapeutic advances in recent years, ARDS remains a life-threatening clinical complication with high morbidity and mortality, especially during the global spread of the coronavirus disease 2019 (COVID-19) pandemic. Previous studies have demonstrated that mesenchymal stem cell (MSC)-based therapy is a potential alternative strategy for the treatment of refractory respiratory diseases including ARDS, while extracorporeal membrane oxygenation (ECMO) as the last resort treatment to sustain life can help improve the survival of ARDS patients. In recent years, several studies have explored the effects of ECMO combined with MSC-based therapies in the treatment of ARDS, and some of them have demonstrated that this combination can provide better therapeutic effects, while others have argued that some critical issues need to be solved before it can be applied to clinical practice. This review presents an overview of the current status, clinical challenges and future prospects of ECMO combined with MSCs in the treatment of ARDS.
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Affiliation(s)
- Jing-Ke Cao
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Xiao-Yang Hong
- Department of Pediatric Intensive Care Unit, Senior Department of Pediatrics, the Seventh Medical Center of PLA General Hospital, NO.5 Nanmencang, Dongcheng District, 100700, Beijing, China
| | - Zhi-Chun Feng
- Department of Neonatology, Senior Department of Pediatrics, the Seventh Medical Center of PLA General Hospital, NO. 5 Nanmencang, Dongcheng District, Beijing, 100700, China
| | - Qiu-Ping Li
- Department of Neonatology, Senior Department of Pediatrics, the Seventh Medical Center of PLA General Hospital, NO. 5 Nanmencang, Dongcheng District, Beijing, 100700, China.
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, China.
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Niu K, Yang L, Song W, Liu Z, Yuan J, Zhang H, Zhang W, Wang J, Tao K. A COMPARATIVE ANALYSIS TO DETERMINE THE OPTIMUM HISTONE DEACETYLASE INHIBITORS AND ADMINISTRATION ROUTE FOR IMPROVING SURVIVAL AND ORGAN INJURY IN RATS AFTER HEMORRHAGIC SHOCK. Shock 2023; 60:75-83. [PMID: 37141162 PMCID: PMC10417212 DOI: 10.1097/shk.0000000000002136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 04/20/2023] [Indexed: 05/05/2023]
Abstract
ABSTRACT Objective: Histone deacetylase inhibitors (HDACIs) have been reported to improve survival in rats with hemorrhagic shock (HS). However, no consensus exists on the most effective HDACIs and their administration routes. We herein aimed to determine the optimal HDACIs and administration route in rats with HS. Methods: Survival analysis: In experiment I, male Sprague-Dawley rats were subjected to HS (mean arterial pressure [MAP] was maintained at 30-40 mm Hg for 20 min), and intravenously injected with the following agents (n = 8 per group): (1) no treatment, (2) vehicle (VEH), (3) entinostat (MS-275), (4) [ N -((6-(Hydroxyamino)-6-oxohexyl)oxy)-3,5-dimethylbenzamide] (LMK-235), (5) tubastatin A, (6) trichostatin A (TSA), and (7) sirtinol. In experiment II, rats were intraperitoneally injected with TSA. Mechanism research: In experiments I and II, rats were observed for 3 h, after which blood samples and liver, heart, and lung tissues were harvested. Results: In experiment I, 75% rats in the VEH group but only 25% rats in the LMK-235 and sirtinol groups died within ≤5 h of treatment, whereas the survival of rats in the MS-275, tubastatin A, and TSA groups was significantly prolonged. MS-275, LMK-235, tubastatin A, and TSA significantly reduced histopathological scores, apoptosis cell numbers, and inflammatory cytokine levels. In experiment II, the survival was longer after i.v. TSA treatment than after i.p. TSA treatment, and the IL-6 levels in the heart were significantly lower in rat who received i.p. TSA treatment than in those who received i.v. TSA treatment. Conclusions: The i.v. effect was superior to the i.p. effect, while nonselective and isoform-specific classes I and IIb HDACIs had similar effects.
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Ernzen K, Trask AJ, Peeples ME, Garg V, Zhao MT. Human Stem Cell Models of SARS-CoV-2 Infection in the Cardiovascular System. Stem Cell Rev Rep 2021; 17:2107-2119. [PMID: 34365591 PMCID: PMC8349465 DOI: 10.1007/s12015-021-10229-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2021] [Indexed: 11/28/2022]
Abstract
The virus responsible for coronavirus disease 2019 (COVID-19), severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has infected over 190 million people to date, causing a global pandemic. SARS-CoV-2 relies on binding of its spike glycoprotein to angiotensin-converting enzyme 2 (ACE2) for infection. In addition to fever, cough, and shortness of breath, severe cases of SARS-CoV-2 infection may result in the rapid overproduction of pro-inflammatory cytokines. This overactive immune response is known as a cytokine storm, which leads to several serious clinical manifestations such as acute respiratory distress syndrome and myocardial injury. Cardiovascular disorders such as acute coronary syndrome (ACS) and heart failure not only enhance disease progression at the onset of infection, but also arise in hospitalized patients with COVID-19. Tissue-specific differentiated cells and organoids derived from human pluripotent stem cells (hPSCs) serve as an excellent model to address how SARS-CoV-2 damages the lungs and the heart. In this review, we summarize the molecular basis of SARS-CoV-2 infection and the current clinical perspectives of the bidirectional relationship between the cardiovascular system and viral progression. Furthermore, we also address the utility of hPSCs as a dynamic model for SARS-CoV-2 research and clinical translation.
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Affiliation(s)
- Kyle Ernzen
- Center for Cardiovascular Research, The Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, OH, USA
- The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
- MCDB Graduate Program, The Ohio State University, Columbus, OH, USA
| | - Aaron J Trask
- Center for Cardiovascular Research, The Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, OH, USA
- The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Mark E Peeples
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
- Center for Vaccine and Immunity, The Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, OH, USA
| | - Vidu Garg
- Center for Cardiovascular Research, The Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, OH, USA
- The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
- MCDB Graduate Program, The Ohio State University, Columbus, OH, USA
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Ming-Tao Zhao
- Center for Cardiovascular Research, The Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, OH, USA.
- The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA.
- MCDB Graduate Program, The Ohio State University, Columbus, OH, USA.
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA.
- Department of Physiology and Cell Biology, The Ohio State University College of Medicine, Columbus, OH, USA.
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Durand N, Mallea J, Zubair AC. Insights into the use of mesenchymal stem cells in COVID-19 mediated acute respiratory failure. NPJ Regen Med 2020; 5:17. [PMID: 33580031 PMCID: PMC7589470 DOI: 10.1038/s41536-020-00105-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 10/06/2020] [Indexed: 12/16/2022] Open
Abstract
The emergence of severe acute respiratory syndrome corona virus 2 (SARS-CoV-2) at the end of 2019 in Hubei province China, is now the cause of a global pandemic present in over 150 countries. COVID-19 is a respiratory illness with most subjects presenting with fever, cough and shortness of breath. In a subset of patients, COVID-19 progresses to hypoxic respiratory failure and acute respiratory distress syndrome (ARDS), both of which are mediated by widespread inflammation and a dysregulated immune response. Mesenchymal stem cells (MSCs), multipotent stromal cells that mediate immunomodulation and regeneration, could be of potential benefit to a subset of COVID-19 subjects with acute respiratory failure. In this review, we discuss key features of the current COVID-19 outbreak, and the rationale for MSC-based therapy in this setting, as well as the limitations associated with this therapeutic approach.
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Affiliation(s)
- Nisha Durand
- Laboratory Medicine and Pathology and Center for Regenerative Medicine, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Jorge Mallea
- Department of Medicine, Division of Allergy, Pulmonary and Sleep Medicine, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Abba C Zubair
- Laboratory Medicine and Pathology and Center for Regenerative Medicine, Mayo Clinic, Jacksonville, FL, 32224, USA.
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Zhao Y, Jiang Y, Chen L, Zheng X, Zhu J, Song X, Shi J, Li Y, He W. Inhibition of the endoplasmic reticulum (ER) stress-associated IRE-1/XBP-1 pathway alleviates acute lung injury via modulation of macrophage activation. J Thorac Dis 2020; 12:284-295. [PMID: 32274095 PMCID: PMC7139036 DOI: 10.21037/jtd.2020.01.45] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Background Both endoplasmic reticulum (ER) stress and macrophage diversity contribute to inflammatory processes in lung injury. However, the interaction between ER stress and macrophage M1/M2 imbalance in lung inflammation remains unclear. The present study, thus, aimed to evaluate the role of ER stress-mediated macrophage phenotype changes in lipopolysaccharide (LPS)-induced acute lung injury (ALI). Methods Lung inflammation and injury were examined in a murine model of LPS-induced ALI with or without ER stress inhibitors. Alveolar macrophage (AM) polarization was determined by flow cytometry. Bone marrow-derived macrophages (BMDMs) were treated with either an ER stress inducer, inhibitor, or an IRE-1 endonuclease inhibitor before being polarized to an M1 and M2 phenotype. The macrophage polarization status was examined via RT-PCR and flow cytometry. Results Our results indicated that ER stress and IRE-1/XBP-1 signaling are activated in LPS-induced ALI. Furthermore, we observed that AM polarizes to an inflammatory phenotype upon exposure to LPS in the induction phase and an anti-inflammatory phenotype in the resolution phase of lung inflammation. Inhibition of ER stress attenuated the pathophysiological features of LPS-induced lung inflammation/injury, as evidenced by a decrease in bronchoalveolar lavage (BAL) protein levels, the number of inflammatory cells, and the expression level of inflammatory mediators. In addition, the ER stress inducer promoted M1 polarization and the switch from M2 to M1 in BMDMs, whereas inhibition of ER stress and XBP-1 splicing suppressed M1 but did not promote M2, both in vivo and in vitro. Conclusions Our results demonstrated that inhibition of the ER stress-associated IRE-1/XBP-1 signaling pathway suppresses M1 polarization and ameliorates LPS-induced lung injury. This indicates that the interaction between ER stress and macrophage polarization might be a novel therapeutic target for endotoxin-induced lung inflammatory disorders.
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Affiliation(s)
- Yanfeng Zhao
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital affiliated to Tongji University, Shanghai 200433, China
| | - Yan Jiang
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital affiliated to Tongji University, Shanghai 200433, China
| | - Linsong Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital affiliated to Tongji University, Shanghai 200433, China
| | - Xinlin Zheng
- Department of Thoracic Surgery, Weifang Hospital of Traditional Chinese Medicine, Weifang 261041, China
| | - Junjie Zhu
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital affiliated to Tongji University, Shanghai 200433, China
| | - Xiao Song
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital affiliated to Tongji University, Shanghai 200433, China
| | - Jinghan Shi
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital affiliated to Tongji University, Shanghai 200433, China
| | - Yuping Li
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital affiliated to Tongji University, Shanghai 200433, China
| | - Wenxin He
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital affiliated to Tongji University, Shanghai 200433, China
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von Bahr V, Millar JE, Malfertheiner MV, Ki KK, Passmore MR, Bartnikowski N, Redd MA, Cavaye M, Suen JY, McAuley DF, Fraser JF. Mesenchymal stem cells may ameliorate inflammation in an ex vivo model of extracorporeal membrane oxygenation. Perfusion 2020; 34:15-21. [PMID: 30966907 DOI: 10.1177/0267659119830857] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
INTRODUCTION Mesenchymal stem cells exhibit immunomodulatory properties which are currently being investigated as a novel treatment option for Acute Respiratory Distress Syndrome. However, the feasibility and efficacy of mesenchymal stem cell therapy in the setting of extracorporeal membrane oxygenation is poorly understood. This study aimed to characterise markers of innate immune activation in response to mesenchymal stem cells during an ex vivo simulation of extracorporeal membrane oxygenation. METHODS Ex vivo extracorporeal membrane oxygenation simulations (n = 10) were conducted using a commercial extracorporeal circuit with a CO2-enhanced fresh gas supply and donor human whole blood. Heparinised circuits (n = 4) were injected with 40 × 106-induced pluripotent stem cell-derived human mesenchymal stem cells, while the remainder (n = 6) acted as controls. Simulations were maintained, under physiological conditions, for 240 minutes. Circuits were sampled at 15, 30, 60, 120 and 240 minutes and assessed for levels of interleukin-1β, interleukin-6, interleukin-8, interleukin-10, tumour necrosis factor-α, transforming growth factor-β1, myeloperoxidase and α-Defensin-1. In addition, haemoglobin, platelet and leukocyte counts were performed. RESULTS There was a trend towards reduced levels of pro-inflammatory cytokines in mesenchymal stem cell-treated circuits and a significant increase in transforming growth factor-β1. Blood cells and markers of neutrophil activation were reduced in mesenchymal stem cell circuits during the length of the simulation. As previously reported, the addition of mesenchymal stem cells resulted in a reduction of flow and increased trans-oxygenator pressures in comparison to controls. CONCLUSIONS The addition of mesenchymal stem cells during extracorporeal membrane oxygenation may cause an increase in transforming growth factor-β1. This is despite their ability to adhere to the membrane oxygenator. Further studies are required to confirm these findings.
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Affiliation(s)
- Viktor von Bahr
- 1 Critical Care Research Group, The Prince Charles Hospital, The University of Queensland, Brisbane, QLD, Australia
- 2 Section for Anesthesiology and Intensive Care Medicine, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Jonathan E Millar
- 1 Critical Care Research Group, The Prince Charles Hospital, The University of Queensland, Brisbane, QLD, Australia
- 3 Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - Maximillian V Malfertheiner
- 1 Critical Care Research Group, The Prince Charles Hospital, The University of Queensland, Brisbane, QLD, Australia
- 4 Department of Internal Medicine II, Cardiology and Pneumology, University Medical Center Regensburg, Regensburg, Germany
| | - Katrina K Ki
- 1 Critical Care Research Group, The Prince Charles Hospital, The University of Queensland, Brisbane, QLD, Australia
| | - Margaret R Passmore
- 1 Critical Care Research Group, The Prince Charles Hospital, The University of Queensland, Brisbane, QLD, Australia
| | - Nicole Bartnikowski
- 1 Critical Care Research Group, The Prince Charles Hospital, The University of Queensland, Brisbane, QLD, Australia
| | - Meredith A Redd
- 5 Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia
| | - Michael Cavaye
- 1 Critical Care Research Group, The Prince Charles Hospital, The University of Queensland, Brisbane, QLD, Australia
| | - Jacky Y Suen
- 1 Critical Care Research Group, The Prince Charles Hospital, The University of Queensland, Brisbane, QLD, Australia
| | - Danny F McAuley
- 3 Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - John F Fraser
- 1 Critical Care Research Group, The Prince Charles Hospital, The University of Queensland, Brisbane, QLD, Australia
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Itonaga T, Hirao S, Yamazaki K, Ikeda T, Minatoya K, Masumoto H. The N-terminal lectin-like domain of thrombomodulin reduces acute lung injury without anticoagulant effects in a rat cardiopulmonary bypass model. Gen Thorac Cardiovasc Surg 2020; 68:785-792. [PMID: 31955320 DOI: 10.1007/s11748-020-01292-8] [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: 08/30/2019] [Accepted: 01/08/2020] [Indexed: 10/25/2022]
Abstract
OBJECTIVES Systemic inflammation evoked by cardiopulmonary bypass (CPB) leads to acute lung injury (ALI) and respiratory failure. Although recombinant human soluble thrombomodulin (rTM) consists of three domains (D1-3), is reported to attenuate systemic inflammation through the N-terminal lectin-like domain (D1), anticoagulant domain (D2) may exacerbate coagulopathy after CPB. We investigated the potential of selective D1 against CPB-mediated ALI free from anticoagulant effects using a rat CPB model. METHODS Rats were divided into three groups: control (CPB alone, n = 5), D1 (CPB + D1, n = 4), and D123 (CPB + D123, n = 6). D1 or D123 was administrated to the rats of each group before CPB establishment. Blood samples are collected before, during and after CPB. Blood coagulability was assessed by a coagulation analyzer. Lung samples are collected at 1 h after the termination of CPB for histological analyses. RESULTS D123 group exhibited significantly prolonged glass beads-activated clotting time with heparinase after CPB compared to that in control group, whereas no significant prolongation in control and D1 group (control vs. D1 vs. D123: 65.4 ± 9.2 vs. 65.3 ± 10.9 vs. 83.5 ± 4.6 s, p = 0.036 [control vs. D123], 0.99 [control vs. D1]) indicating the absence of anticoagulant activities of D1. Histological studies revealed less congestion, edema, inflammation, and hemorrhage in both D1 and D123 groups compared to those in control group indicating protective effects of both D1 and D123 against ALI mediated by CPB. CONCLUSIONS N-terminal lectin-like domain of rTM may reduce the risk of ALI without anticoagulant effects.
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Affiliation(s)
- Tatsuya Itonaga
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Shingo Hirao
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan.,Department of Cardiovascular Surgery, Japanese Red Cross Wakayama Medical Center, Wakayama, Japan
| | - Kazuhiro Yamazaki
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Tadashi Ikeda
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Kenji Minatoya
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Hidetoshi Masumoto
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan.
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Hirao S, Masumoto H, Itonaga T, Minatoya K. A Recovery Cardiopulmonary Bypass Model Without Transfusion or Inotropic Agents in Rats. J Vis Exp 2018. [PMID: 29630037 DOI: 10.3791/56986] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Cardiopulmonary bypass (CPB) is indispensable in cardiovascular surgery. Despite the dramatic refinement of CPB technique and devices, multi-organ complications related to prolonged CPB still compromise the outcome of cardiovascular surgeries, and may worsen postoperative morbidity and mortality. Animal models recapitulating the clinical usage of CPB enable the clarification of the pathophysiological processes that occur during CPB, and facilitate pre-clinical studies to develop strategies protecting against these complications. Rat CPB models are advantageous because of their greater cost-effectiveness, convenient experimental processes, abundant testing methods at the genetic or protein levels, and genetic consistency. They can be used for investigating the immune system activation and synthesis of proinflammatory cytokines, compliment activation, and production of oxygen free radicals. The rat models have been refined and have gradually taken the place of large-animal models. Here, we describe a simple CPB model without transfusion and/or inotropic agents in a rat. This recovery model allows the study of the long-term multiple organ sequelae of CPB.
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Affiliation(s)
- Shingo Hirao
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University
| | - Hidetoshi Masumoto
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University;
| | - Tatsuya Itonaga
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University
| | - Kenji Minatoya
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University
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Hirao S, Minakata K, Masumoto H, Yamazaki K, Ikeda T, Minatoya K, Sakata R. Recombinant human soluble thrombomodulin prevents acute lung injury in a rat cardiopulmonary bypass model. J Thorac Cardiovasc Surg 2017. [PMID: 28645823 DOI: 10.1016/j.jtcvs.2017.05.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND Cardiopulmonary bypass (CPB) may induce systemic inflammatory responses causing acute lung injury. Recombinant human soluble thrombomodulin (rTM) is reported to attenuate the secretion of inflammatory cytokines and the high-mobility group box 1 (HMGB1) protein, which is critical in controlling systemic inflammation and apoptosis. We investigated the protective effects of rTM on CPB-induced lung injury in a rat model. METHODS Eighteen male Sprague-Dawley rats were divided into 3 groups: sham, control (CPB alone), and rTM (CPB + rTM). CPB was conducted in the control group and the rTM group. A bolus of rTM (3 mg/kg) was administered to the rTM group rats before CPB establishment. RESULTS The ratio of partial pressure of arterial oxygen to the fraction of inspired oxygen only dropped markedly from before CPB in the control group (P < .001). Serum tumor necrosis factor α, interleukin (IL) 6, and HMGB1 levels were significantly higher in the control group after CPB. Pathologic study revealed significantly more severe congestion, alveolar hemorrhage, neutrophil accumulation, and edema, and the number of lung cells expressing HMGB1 increased in the control group. The mRNA expression levels of tumor necrosis factor α, IL-6, IL-1β, and HMGB1 in the control group were significantly higher than those in other groups. According to Western blot analysis, nuclear factor-κB p65 in lung tissue was significantly downregulated in the rTM group. The number of apoptotic cells and the protein of cleaved Caspase-3 were reduced in the rTM group. CONCLUSIONS These results suggest that rTM prevents acute lung injury through attenuating inflammation and apoptosis during and after CPB in a rat model.
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Affiliation(s)
- Shingo Hirao
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kenji Minakata
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hidetoshi Masumoto
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
| | - Kazuhiro Yamazaki
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tadashi Ikeda
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kenji Minatoya
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryuzo Sakata
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Anselmi A, Verhoye JP. Prevention of postoperative pulmonary complications and aggregation of marginal gains. J Thorac Cardiovasc Surg 2017; 153:735-736. [DOI: 10.1016/j.jtcvs.2016.10.049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 10/21/2016] [Indexed: 01/20/2023]
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