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Kim H, Park HH, Kim HN, Seo D, Hong KS, Jang JG, Seo EU, Kim IY, Jeon SY, Son B, Cho SW, Kim W, Ahn JH, Lee W. The TOX-RAGE axis mediates inflammatory activation and lung injury in severe pulmonary infectious diseases. Proc Natl Acad Sci U S A 2024; 121:e2319322121. [PMID: 38900789 PMCID: PMC11214053 DOI: 10.1073/pnas.2319322121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 05/22/2024] [Indexed: 06/22/2024] Open
Abstract
Thymocyte selection-associated high-mobility group box (TOX) is a transcription factor that is crucial for T cell exhaustion during chronic antigenic stimulation, but its role in inflammation is poorly understood. Here, we report that TOX extracellularly mediates drastic inflammation upon severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection by binding to the cell surface receptor for advanced glycation end-products (RAGE). In various diseases, including COVID-19, TOX release was highly detectable in association with disease severity, contributing to lung fibroproliferative acute respiratory distress syndrome (ARDS). Recombinant TOX-induced blood vessel rupture, similar to a clinical signature in patients experiencing a cytokine storm, further exacerbating respiratory function impairment. In contrast, disruption of TOX function by a neutralizing antibody and genetic removal of RAGE diminished TOX-mediated deleterious effects. Altogether, our results suggest an insight into TOX function as an inflammatory mediator and propose the TOX-RAGE axis as a potential target for treating severe patients with pulmonary infection and mitigating lung fibroproliferative ARDS.
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Affiliation(s)
- Hyelim Kim
- Brain Science Institute, Korea Institute of Science and Technology, Seoul02792, Republic of Korea
- Department of Biotechnology, Yonsei University, Seoul03722, Republic of Korea
| | - Hee Ho Park
- Department of Bioengineering, Hanyang University, Seoul04763, Republic of Korea
- Research Institute for Convergence of Basic Science, Hanyang University, Seoul04763, Republic of Korea
| | - Hong Nam Kim
- Brain Science Institute, Korea Institute of Science and Technology, Seoul02792, Republic of Korea
- Division of Bio-Medical Science and Technology (Korea Institute of Science and Technology School), Korea University of Science and Technology, Seoul02792, Republic of Korea
- School of Mechanical Engineering, Yonsei University, Seoul03722, Republic of Korea
- Yonsei-Korea Institute of Science and Technology Convergence Research Institute, Yonsei University, Seoul03722, Republic of Korea
| | - Donghyuk Seo
- Department of Chemistry, Sungkyunkwan University, Suwon16419, Republic of Korea
| | - Kyung Soo Hong
- Division of Pulmonology and Allergy, Department of Internal Medicine, College of Medicine, Yeungnam University and Regional Center for Respiratory Diseases, Yeungnam University Medical Center, Daegu42415, Republic of Korea
| | - Jong Geol Jang
- Division of Pulmonology and Allergy, Department of Internal Medicine, College of Medicine, Yeungnam University and Regional Center for Respiratory Diseases, Yeungnam University Medical Center, Daegu42415, Republic of Korea
| | - Eun U Seo
- Brain Science Institute, Korea Institute of Science and Technology, Seoul02792, Republic of Korea
- Division of Bio-Medical Science and Technology (Korea Institute of Science and Technology School), Korea University of Science and Technology, Seoul02792, Republic of Korea
| | - In-Young Kim
- Department of Life Science, University of Seoul, Seoul02504, Republic of Korea
| | - So-Young Jeon
- Department of Life Science, University of Seoul, Seoul02504, Republic of Korea
| | - Boram Son
- Department of Bioengineering, Hanyang University, Seoul04763, Republic of Korea
| | - Seong-Woo Cho
- Department of Biotechnology, Yonsei University, Seoul03722, Republic of Korea
| | - Wantae Kim
- Department of Life Science, University of Seoul, Seoul02504, Republic of Korea
| | - June Hong Ahn
- Division of Pulmonology and Allergy, Department of Internal Medicine, College of Medicine, Yeungnam University and Regional Center for Respiratory Diseases, Yeungnam University Medical Center, Daegu42415, Republic of Korea
| | - Wonhwa Lee
- Department of Chemistry, Sungkyunkwan University, Suwon16419, Republic of Korea
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2
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Loubet F, Robert C, Leclaire C, Theillière C, Saint-Béat C, Lenga Ma Bonda W, Zhai R, Minet-Quinard R, Belville C, Blanchon L, Sapin V, Garnier M, Jabaudon M. Effects of sevoflurane on lung alveolar epithelial wound healing and survival in a sterile in vitro model of acute respiratory distress syndrome. Exp Cell Res 2024; 438:114030. [PMID: 38583855 DOI: 10.1016/j.yexcr.2024.114030] [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: 01/14/2024] [Revised: 03/30/2024] [Accepted: 04/04/2024] [Indexed: 04/09/2024]
Abstract
Acute respiratory distress syndrome (ARDS) is a serious lung condition that often leads to hospitalization in intensive care units and a high mortality rate. Sevoflurane is a volatile anesthetic with growing interest for sedation in ventilated patients with ARDS. It has been shown to have potential lung-protective effects, such as reduced inflammation and lung edema, or improved arterial oxygenation. In this study, we investigated the effects of sevoflurane on lung injury in cultured human carcinoma-derived lung alveolar epithelial (A549) cells. We found that sevoflurane was associated with improved wound healing after exposure to inflammatory cytokines, with preserved cell proliferation but no effect on cell migration properties. Sevoflurane exposure was also associated with enhanced cell viability and active autophagy in A549 cells exposed to cytokines. These findings suggest that sevoflurane may have beneficial effects on lung epithelial injury by promoting alveolar epithelial wound healing and by influencing the survival and proliferation of A549 epithelial cells in vitro. Further research is needed to confirm these findings and to investigate the key cellular mechanisms explaining sevoflurane's potential effects on lung epithelial injury.
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Affiliation(s)
- Florian Loubet
- iGReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | - Cédric Robert
- iGReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | - Charlotte Leclaire
- iGReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | - Camille Theillière
- iGReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | - Cécile Saint-Béat
- iGReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | | | - Ruoyang Zhai
- iGReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | - Régine Minet-Quinard
- iGReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France; Department of Medical Biochemistry and Molecular Genetics, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Corinne Belville
- iGReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | - Loic Blanchon
- iGReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | - Vincent Sapin
- iGReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France; Department of Medical Biochemistry and Molecular Genetics, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Marc Garnier
- iGReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France; Department of Perioperative Medicine, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Matthieu Jabaudon
- iGReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France; Department of Perioperative Medicine, CHU Clermont-Ferrand, Clermont-Ferrand, France.
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3
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Dhanushkodi NR, Prakash S, Quadiri A, Zayou L, Srivastava R, Shaik AM, Suzer B, Ibraim IC, Landucci G, Tifrea DF, Singer M, Jamal L, Edwards RA, Vahed H, Brown L, BenMohamed L. Antiviral and Anti-Inflammatory Therapeutic Effect of RAGE-Ig Protein against Multiple SARS-CoV-2 Variants of Concern Demonstrated in K18-hACE2 Mouse and Syrian Golden Hamster Models. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:576-585. [PMID: 38180084 DOI: 10.4049/jimmunol.2300392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 11/29/2023] [Indexed: 01/06/2024]
Abstract
SARS-CoV-2 variants of concern (VOCs) continue to evolve and reemerge with chronic inflammatory long COVID sequelae, necessitating the development of anti-inflammatory therapeutic molecules. Therapeutic effects of the receptor for advanced glycation end products (RAGE) were reported in many inflammatory diseases. However, a therapeutic effect of RAGE in COVID-19 has not been reported. In the present study, we investigated whether and how the RAGE-Ig fusion protein would have an antiviral and anti-inflammatory therapeutic effect in the COVID-19 system. The protective therapeutic effect of RAGE-Ig was determined in vivo in K18-hACE2 transgenic mice and Syrian golden hamsters infected with six VOCs of SARS-CoV-2. The underlying antiviral mechanism of RAGE-Ig was determined in vitro in SARS-CoV-2-infected human lung epithelial cells (BEAS-2B). Following treatment of K18-hACE2 mice and hamsters infected with various SARS-CoV-2 VOCs with RAGE-Ig, we demonstrated (1) significant dose-dependent protection (i.e., greater survival, less weight loss, lower virus replication in the lungs); (2) a reduction of inflammatory macrophages (F4/80+/Ly6C+) and neutrophils (CD11b+/Ly6G+) infiltrating the infected lungs; (3) a RAGE-Ig dose-dependent increase in the expression of type I IFNs (IFN-α and IFN-β) and type III IFN (IFNλ2) and a decrease in the inflammatory cytokines (IL-6 and IL-8) in SARS-CoV-2-infected human lung epithelial cells; and (4) a dose-dependent decrease in the expression of CD64 (FcgR1) on monocytes and lung epithelial cells from symptomatic COVID-19 patients. Our preclinical findings revealed type I and III IFN-mediated antiviral and anti-inflammatory therapeutic effects of RAGE-Ig protein against COVID-19 caused by multiple SARS-CoV-2 VOCs.
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Affiliation(s)
- Nisha Rajeswari Dhanushkodi
- Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, University of California, Irvine, School of Medicine, Irvine, CA
| | - Swayam Prakash
- Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, University of California, Irvine, School of Medicine, Irvine, CA
| | - Afshana Quadiri
- Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, University of California, Irvine, School of Medicine, Irvine, CA
| | - Latifa Zayou
- Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, University of California, Irvine, School of Medicine, Irvine, CA
| | - Ruchi Srivastava
- Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, University of California, Irvine, School of Medicine, Irvine, CA
| | - Amin Mohammed Shaik
- Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, University of California, Irvine, School of Medicine, Irvine, CA
| | - Berfin Suzer
- Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, University of California, Irvine, School of Medicine, Irvine, CA
| | - Izabela Coimbra Ibraim
- High Containment Facility, University of California, Irvine, School of Medicine, Irvine, CA
| | - Gary Landucci
- High Containment Facility, University of California, Irvine, School of Medicine, Irvine, CA
| | - Delia F Tifrea
- Department of Pathology and Laboratory Medicine, University of California, Irvine School of Medicine, Irvine, CA
| | - Mahmoud Singer
- Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, University of California, Irvine, School of Medicine, Irvine, CA
| | - Leila Jamal
- Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, University of California, Irvine, School of Medicine, Irvine, CA
| | - Robert A Edwards
- Department of Pathology and Laboratory Medicine, University of California, Irvine School of Medicine, Irvine, CA
| | - Hawa Vahed
- Department of Vaccines and Immunotherapies, TechImmune, LLC, University Lab Partners, Irvine, CA
| | | | - Lbachir BenMohamed
- Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, University of California, Irvine, School of Medicine, Irvine, CA
- Department of Vaccines and Immunotherapies, TechImmune, LLC, University Lab Partners, Irvine, CA
- Department of Molecular Biology & Biochemistry, University of California, Irvine, School of Medicine, Irvine, CA
- Institute for Immunology, University of California, Irvine, School of Medicine, Irvine, CA
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4
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Huang Q, Le Y, Li S, Bian Y. Signaling pathways and potential therapeutic targets in acute respiratory distress syndrome (ARDS). Respir Res 2024; 25:30. [PMID: 38218783 PMCID: PMC10788036 DOI: 10.1186/s12931-024-02678-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 01/03/2024] [Indexed: 01/15/2024] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a common condition associated with critically ill patients, characterized by bilateral chest radiographical opacities with refractory hypoxemia due to noncardiogenic pulmonary edema. Despite significant advances, the mortality of ARDS remains unacceptably high, and there are still no effective targeted pharmacotherapeutic agents. With the outbreak of coronavirus disease 19 worldwide, the mortality of ARDS has increased correspondingly. Comprehending the pathophysiology and the underlying molecular mechanisms of ARDS may thus be essential to developing effective therapeutic strategies and reducing mortality. To facilitate further understanding of its pathogenesis and exploring novel therapeutics, this review provides comprehensive information of ARDS from pathophysiology to molecular mechanisms and presents targeted therapeutics. We first describe the pathogenesis and pathophysiology of ARDS that involve dysregulated inflammation, alveolar-capillary barrier dysfunction, impaired alveolar fluid clearance and oxidative stress. Next, we summarize the molecular mechanisms and signaling pathways related to the above four aspects of ARDS pathophysiology, along with the latest research progress. Finally, we discuss the emerging therapeutic strategies that show exciting promise in ARDS, including several pharmacologic therapies, microRNA-based therapies and mesenchymal stromal cell therapies, highlighting the pathophysiological basis and the influences on signal transduction pathways for their use.
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Affiliation(s)
- Qianrui Huang
- Department of Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095, Jie Fang Avenue, Wuhan, 430030, China
- Department of Emergency Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, Jie Fang Avenue, Wuhan, 430030, China
| | - Yue Le
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, 87 Dingjia Bridge, Hunan Road, Gu Lou District, Nanjing, 210009, China
| | - Shusheng Li
- Department of Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095, Jie Fang Avenue, Wuhan, 430030, China.
- Department of Emergency Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, Jie Fang Avenue, Wuhan, 430030, China.
| | - Yi Bian
- Department of Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095, Jie Fang Avenue, Wuhan, 430030, China.
- Department of Emergency Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, Jie Fang Avenue, Wuhan, 430030, China.
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5
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Zhang J, Guo Y, Mak M, Tao Z. Translational medicine for acute lung injury. J Transl Med 2024; 22:25. [PMID: 38183140 PMCID: PMC10768317 DOI: 10.1186/s12967-023-04828-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 12/24/2023] [Indexed: 01/07/2024] Open
Abstract
Acute lung injury (ALI) is a complex disease with numerous causes. This review begins with a discussion of disease development from direct or indirect pulmonary insults, as well as varied pathogenesis. The heterogeneous nature of ALI is then elaborated upon, including its epidemiology, clinical manifestations, potential biomarkers, and genetic contributions. Although no medication is currently approved for this devastating illness, supportive care and pharmacological intervention for ALI treatment are summarized, followed by an assessment of the pathophysiological gap between human ALI and animal models. Lastly, current research progress on advanced nanomedicines for ALI therapeutics in preclinical and clinical settings is reviewed, demonstrating new opportunities towards developing an effective treatment for ALI.
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Affiliation(s)
- Jianguo Zhang
- Department of Emergency Medicine, The Affiliated Hospital, Jiangsu University, Zhenjiang, 212001, Jiangsu, China
| | - Yumeng Guo
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, 212013, Jiangsu, China
| | - Michael Mak
- Department of Biomedical Engineering, School of Engineering and Applied Science, Yale University, New Haven, 06520, USA
| | - Zhimin Tao
- Department of Emergency Medicine, The Affiliated Hospital, Jiangsu University, Zhenjiang, 212001, Jiangsu, China.
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, 212013, Jiangsu, China.
- Department of Biomedical Engineering, School of Engineering and Applied Science, Yale University, New Haven, 06520, USA.
- Zhenjiang Key Laboratory of High Technology Research on Exosomes Foundation and Transformation Application, School of Medicine, Jiangsu University, Zhenjiang, 212013, Jiangsu, China.
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6
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Predella C, Iezza D, Miller ML, Swayne T, Saqi A, Dorrello NV. Standardized Digital Method for Histological Evaluation of Experimental Acute Lung Injury. Am J Respir Cell Mol Biol 2023; 69:596-598. [PMID: 37909696 PMCID: PMC10633836 DOI: 10.1165/rcmb.2023-0182le] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023] Open
Affiliation(s)
- Camilla Predella
- Columbia UniversityNew York, New York
- Politecnico di MilanoMilan, Italy
| | | | | | | | | | - N. Valerio Dorrello
- Columbia UniversityNew York, New York
- NewYork-Presbyterian Morgan Stanley Children’s HospitalNew York, New York
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Mitroi RM, Padureanu V, Mitrea A, Protasiewicz Timofticiuc DC, Rosu MM, Clenciu D, Enescu A, Padureanu R, Tenea Cojan TS, Vladu IM. Prothrombotic status in COVID‑19 with diabetes mellitus (Review). Biomed Rep 2023; 19:65. [PMID: 37649534 PMCID: PMC10463232 DOI: 10.3892/br.2023.1647] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 07/26/2023] [Indexed: 09/01/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has caused an important social and health impact worldwide and the coronavirus disease-19 (COVID-19) has elicited devastating economy problems. The pathogenesis of SARS-CoV-2 infection is a complex mechanism and is considered to be the result of a challenging interaction, in which host and virus immune responses are the key elements. In this process, several inflammatory pathways are involved, and their initiation can have multiple consequences with a considerable impact on evolution, such as hyperinflammation and cytokine storm, thereby promoting activation of the coagulation system and fibrinolytic activity suppression. It is commonly recognized that COVID-19 severity involves multiple factors, including diabetes which increases the risk of developing different complications. This could be as a result of the low-grade inflammation as well as the innate and adaptive immune response dysfunction that is observed in patients with diabetes mellitus. In patients with diabetes, multiple metabolic disturbances which have a major impact in disturbing the balance between coagulation and fibrinolysis were discovered, thus the risk for thrombotic events is increased. Diabetes has been recognized as an important severity prognosis factor in COVID-19 cases and considering there is a significant association between diabetes and prothrombotic status, it could be responsible for the increased risk of thrombotic events with a worse prognosis.
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Affiliation(s)
- Roxana Madalina Mitroi
- Department of Diabetes, Nutrition and Metabolic Diseases, County Clinical Emergency Hospital of Craiova, 200642 Craiova, Romania
| | - Vlad Padureanu
- Department of Internal Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Adina Mitrea
- Department of Diabetes, Nutrition and Metabolic Diseases, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
- Department of Diabetes, Nutrition and Metabolic Diseases, Clinical Municipal Hospital ‘Philanthropy’ of Craiova, 200143 Craiova, Romania
| | | | - Maria Magdalena Rosu
- Department of Diabetes, Nutrition and Metabolic Diseases, County Clinical Emergency Hospital of Craiova, 200642 Craiova, Romania
| | - Diana Clenciu
- Department of Diabetes, Nutrition and Metabolic Diseases, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
- Department of Diabetes, Nutrition and Metabolic Diseases, Clinical Municipal Hospital ‘Philanthropy’ of Craiova, 200143 Craiova, Romania
| | - Aurelia Enescu
- Department of Internal Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Rodica Padureanu
- Department of Pneumology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Tiberiu Stefanita Tenea Cojan
- Department of General Surgery, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Ionela Mihaela Vladu
- Department of Diabetes, Nutrition and Metabolic Diseases, County Clinical Emergency Hospital of Craiova, 200642 Craiova, Romania
- Department of Diabetes, Nutrition and Metabolic Diseases, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
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Özkul B, Sever İH, Yiğittürk G, Elgörmüş ÇS, Gür SG, Erbaş O. Demonstration of ameliorating effect of papaverine in sepsis-induced acute lung injury on rat model through radiology and histology. ULUS TRAVMA ACIL CER 2023; 29:963-971. [PMID: 37681716 PMCID: PMC10560817 DOI: 10.14744/tjtes.2023.73580] [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: 07/24/2022] [Revised: 07/26/2022] [Accepted: 07/25/2023] [Indexed: 09/09/2023]
Abstract
BACKGROUND Our target was to show the role of high mobility group box-1/receptor for (HMGB1/RAGE) interaction in feces intraperitoneal injection procedure (FIP)-induced acute lung injury (ALI) pathophysiology, to investigate the effect of papaverine on RAGE associated NF-κB pathway by determining the level of soluble RAGE (sRAGE) and HMGB1, and to support this hypothesis by evaluating inflammatory biochemical, oxidative stress markers, Hounsfield unit (HU) value in computed tomography (CT), and histo-pathological results. METHODS FIP was performed on 37 Wistar rats for creating a sepsis-induced ALI model. The animals were assigned into four groups as follows: Normal control (no treatment), placebo (FIP and saline), and receiving 20 mg/kg and 40 mg/kg per day papaverine. Twenty h after FIP, CT examination was performed for all animals, and HU value of the lung parenchyma was measured. The plasma levels of tumor necrosis factor (TNF)-α, HMGB1, sRAGE, C-reactive protein (CRP) and malondialdehyde (MDA), and lactic acid (LA) were determined and PaO2 and PaCO2 were measured from arterial blood sample. Lung damage was assessed by histopathological. RESULTS TNF-, IL-6, CRP, HMGB1, MDA, LA levels, histopathologic scores, and HU values of CT were significantly increased and sRAGE levels were decreased in the saline-treated group against normal group (all P<0.05). Papaverine significantly reversed all results regardless of the dose (all P<0.05) and demonstrated inhibition of HMGB1/RAGE interaction through increasing sRAGE levels and suppresses the pro-inflammatory cytokines. CONCLUSION We concluded that papaverine has ameliorating effects in rat model of ALI.
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Affiliation(s)
- Bahattin Özkul
- Department of Radiology, İstanbul Atlas University, İstanbul-Türkiye
| | | | - Gürkan Yiğittürk
- Department of Histology and Embryology, Muğla Sıtkı Koçman University, Muğla-Türkiye
| | | | | | - Oytun Erbaş
- Department of Physiology, Demiroğlu Bilim University, İstanbul-Türkiye
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9
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Zhai R, Lenga Ma Bonda W, Leclaire C, Saint-Béat C, Theilliere C, Belville C, Coupet R, Blondonnet R, Bouvier D, Blanchon L, Sapin V, Jabaudon M. Effects of sevoflurane on lung epithelial permeability in experimental models of acute respiratory distress syndrome. J Transl Med 2023; 21:397. [PMID: 37331963 DOI: 10.1186/s12967-023-04253-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 06/08/2023] [Indexed: 06/20/2023] Open
Abstract
BACKGROUND Preclinical studies in acute respiratory distress syndrome (ARDS) have suggested that inhaled sevoflurane may have lung-protective effects and clinical trials are ongoing to assess its impact on major clinical outcomes in patients with ARDS. However, the underlying mechanisms of these potential benefits are largely unknown. This investigation focused on the effects of sevoflurane on lung permeability changes after sterile injury and the possible associated mechanisms. METHODS To investigate whether sevoflurane could decrease lung alveolar epithelial permeability through the Ras homolog family member A (RhoA)/phospho-Myosin Light Chain 2 (Ser19) (pMLC)/filamentous (F)-actin pathway and whether the receptor for advanced glycation end-products (RAGE) may mediate these effects. Lung permeability was assessed in RAGE-/- and littermate wild-type C57BL/6JRj mice on days 0, 1, 2, and 4 after acid injury, alone or followed by exposure at 1% sevoflurane. Cell permeability of mouse lung epithelial cells was assessed after treatment with cytomix (a mixture of TNFɑ, IL-1β, and IFNγ) and/or RAGE antagonist peptide (RAP), alone or followed by exposure at 1% sevoflurane. Levels of zonula occludens-1, E-cadherin, and pMLC were quantified, along with F-actin immunostaining, in both models. RhoA activity was assessed in vitro. RESULTS In mice after acid injury, sevoflurane was associated with better arterial oxygenation, decreased alveolar inflammation and histological damage, and non-significantly attenuated the increase in lung permeability. Preserved protein expression of zonula occludens-1 and less increase of pMLC and actin cytoskeletal rearrangement were observed in injured mice treated with sevoflurane. In vitro, sevoflurane markedly decreased electrical resistance and cytokine release of MLE-12 cells, which was associated with higher protein expression of zonula occludens-1. Improved oxygenation levels and attenuated increase in lung permeability and inflammatory response were observed in RAGE-/- mice compared to wild-type mice, but RAGE deletion did not influence the effects of sevoflurane on permeability indices after injury. However, the beneficial effect of sevoflurane previously observed in wild-type mice on day 1 after injury in terms of higher PaO2/FiO2 and decreased alveolar levels of cytokines was not found in RAGE-/- mice. In vitro, RAP alleviated some of the beneficial effects of sevoflurane on electrical resistance and cytoskeletal rearrangement, which was associated with decreased cytomix-induced RhoA activity. CONCLUSIONS Sevoflurane decreased injury and restored epithelial barrier function in two in vivo and in vitro models of sterile lung injury, which was associated with increased expression of junction proteins and decreased actin cytoskeletal rearrangement. In vitro findings suggest that sevoflurane may decrease lung epithelial permeability through the RhoA/pMLC/F-actin pathway.
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Affiliation(s)
- Ruoyang Zhai
- iGReD, UFR de Médecine et des Professions Paramédicales, Place Henri Dunant, CNRS, INSERM, Université Clermont Auvergne, 63000, Clermont-Ferrand, France
| | - Woodys Lenga Ma Bonda
- iGReD, UFR de Médecine et des Professions Paramédicales, Place Henri Dunant, CNRS, INSERM, Université Clermont Auvergne, 63000, Clermont-Ferrand, France
| | - Charlotte Leclaire
- iGReD, UFR de Médecine et des Professions Paramédicales, Place Henri Dunant, CNRS, INSERM, Université Clermont Auvergne, 63000, Clermont-Ferrand, France
| | - Cécile Saint-Béat
- iGReD, UFR de Médecine et des Professions Paramédicales, Place Henri Dunant, CNRS, INSERM, Université Clermont Auvergne, 63000, Clermont-Ferrand, France
| | - Camille Theilliere
- iGReD, UFR de Médecine et des Professions Paramédicales, Place Henri Dunant, CNRS, INSERM, Université Clermont Auvergne, 63000, Clermont-Ferrand, France
| | - Corinne Belville
- iGReD, UFR de Médecine et des Professions Paramédicales, Place Henri Dunant, CNRS, INSERM, Université Clermont Auvergne, 63000, Clermont-Ferrand, France
| | - Randy Coupet
- iGReD, UFR de Médecine et des Professions Paramédicales, Place Henri Dunant, CNRS, INSERM, Université Clermont Auvergne, 63000, Clermont-Ferrand, France
- Department of Perioperative Medicine, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Raiko Blondonnet
- iGReD, UFR de Médecine et des Professions Paramédicales, Place Henri Dunant, CNRS, INSERM, Université Clermont Auvergne, 63000, Clermont-Ferrand, France
- Department of Perioperative Medicine, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Damien Bouvier
- iGReD, UFR de Médecine et des Professions Paramédicales, Place Henri Dunant, CNRS, INSERM, Université Clermont Auvergne, 63000, Clermont-Ferrand, France
- Department of Medical Biochemistry and Molecular Genetics, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Loic Blanchon
- iGReD, UFR de Médecine et des Professions Paramédicales, Place Henri Dunant, CNRS, INSERM, Université Clermont Auvergne, 63000, Clermont-Ferrand, France
| | - Vincent Sapin
- iGReD, UFR de Médecine et des Professions Paramédicales, Place Henri Dunant, CNRS, INSERM, Université Clermont Auvergne, 63000, Clermont-Ferrand, France
- Department of Medical Biochemistry and Molecular Genetics, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Matthieu Jabaudon
- iGReD, UFR de Médecine et des Professions Paramédicales, Place Henri Dunant, CNRS, INSERM, Université Clermont Auvergne, 63000, Clermont-Ferrand, France.
- Department of Perioperative Medicine, CHU Clermont-Ferrand, Clermont-Ferrand, France.
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10
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Costa Monteiro AC, Matthay MA. Are circulating endothelial cells the next target for transcriptome-level pathway analysis in ARDS? Am J Physiol Lung Cell Mol Physiol 2023; 324:L393-L399. [PMID: 36749906 PMCID: PMC10110698 DOI: 10.1152/ajplung.00353.2022] [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] [Indexed: 02/09/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) has had no mortality-improving pharmacological intervention despite 50 years of high-caliber research due to its heterogeneity (Huppert LA, Matthay MA, Ware LB. Semin Respir Crit Care Med 40: 31-39, 2019). For the field to advance, better definitions for ARDS subgroups that more uniformly respond to therapies are needed (Bos LDJ, Scicluna BP, Ong DSY, Cremer O, van der Poll T, Schultz MJ. Am J Respir Crit Care Med 200: 42-50, 2019; Dickson RP, Schultz MJ, T van der P, Schouten LR, Falkowski NR, Luth JE, Sjoding MW, Brown CA, Chanderraj R, Huffnagle GB, Bos LDJ, Biomarker Analysis in Septic ICU Patients (BASIC) Consortium. Am J Respir Crit Care Med 201: 555-563, 2020; Sinha P, Calfee CS. Am J Respir Crit Care Med 200: 4-6, 2019; Calfee CS, Delucchi K, Parsons PE, Thompson BT, Ware LB, Matthay MA, NHLBI ARDS Network. Lancet Respir Med 2: 611-620, 2014; Hendrickson CM, Matthay MA. Pulm Circ 8: 1-12, 2018). A plethora of high-quality clinical research has uncovered the next generation of soluble biomarkers that provide the predictive enrichment necessary for trial recruitment; however, plasma-soluble markers do not specify the damaged organ of origin nor do they provide insight into disease mechanisms. In this perspective, we make the case for querying the transcriptome of circulating endothelial cells (CECs), which when shed from vessels after inflammatory insult, become heralds of site-specific inflammatory damage. We review the application of CEC quantification to multiple disease phenotypes (including myocardial infarction, vasculitides, cancer, and ARDS), in each case supporting the association of CEC number with disease severity. We also argue for the utility of single-cell RNA transcriptomics to the understanding of cell-specific contributions to disease pathophysiology and its potential to uncover novel insight on signals contributing to CEC shedding in ARDS.
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Affiliation(s)
- Ana C Costa Monteiro
- Department of Medicine, Division of Pulmonary and Critical Care, University of California, Los Angeles, California, United States
| | - Michael A Matthay
- Cardiovascular Research Institute, Department of Medicine and Anesthesia, University of California, San Francisco, California, United States
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11
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Sun Y, Hu B, Stanley G, Harris ZM, Gautam S, Homer R, Koff JL, Rajagopalan G. IFN- γ Is Protective in Cytokine Release Syndrome-associated Extrapulmonary Acute Lung Injury. Am J Respir Cell Mol Biol 2023; 68:75-89. [PMID: 36125351 PMCID: PMC9817908 DOI: 10.1165/rcmb.2022-0117oc] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 09/19/2022] [Indexed: 02/05/2023] Open
Abstract
The mechanisms by which excessive systemic activation of adaptive T lymphocytes, as in cytokine release syndrome (CRS), leads to innate immune cell-mediated acute lung injury (ALI) or acute respiratory distress syndrome, often in the absence of any infection, remains unknown. Here, we investigated the roles of IFN-γ and IL-17A, key T-cell cytokines significantly elevated in patients with CRS, in the immunopathogenesis of CRS-induced extrapulmonary ALI. CRS was induced in wild-type (WT), IL-17A- and IFN-γ knockout (KO) human leukocyte antigen-DR3 transgenic mice with 10 μg of the superantigen, staphylococcal enterotoxin B, given intraperitoneally. Several ALI parameters, including gene expression profiling in the lungs, were studied 4, 24, or 48 hours later. Systemic T-cell activation with staphylococcal enterotoxin B resulted in robust upregulation of several chemokines, S100A8/A9, matrix metalloproteases, and other molecules implicated in tissue damage, granulocyte as well as agranulocyte adhesion, and diapedesis in the lungs as early as 4 hours, which was accompanied by subsequent neutrophil/eosinophil lung infiltration and severe ALI in IFN-γ KO mice. These pathways were significantly underexpressed in IL-17A KO mice, which manifested mildest ALI and intermediate in WT mice. Neutralization of IFN-γ worsened ALI in WT and IL-17A KO mice, whereas neutralizing IL-17A did not mitigate lung injury in IFN-γ KO mice, suggesting a dominant protective role for IFN-γ in ALI and that IL-17A is dispensable. Ruxolitinib, a Janus kinase inhibitor, increased ALI severity in WT mice. Thus, our study identified novel mechanisms of ALI in CRS and its differential modulation by IFN-γ and IL-17A.
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Affiliation(s)
- Ying Sun
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, and
| | - Buqu Hu
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, and
| | - Gail Stanley
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, and
| | - Zachary M. Harris
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, and
| | - Samir Gautam
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, and
| | - Robert Homer
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, and
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut; and
- Pathology and Laboratory Medicine Service, Veterans Affairs Connecticut HealthCare System, West Haven, Connecticut
| | - Jonathan L. Koff
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, and
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12
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Matthay ZA, Fields AT, Wick KD, Jones C, Lane HC, Herrera K, Nuñez-Garcia B, Gennatas E, Hendrickson CM, Kornblith AE, Matthay MA, Kornblith LZ. Association of SARS-CoV-2 nucleocapsid viral antigen and the receptor for advanced glycation end products with development of severe disease in patients presenting to the emergency department with COVID-19. Front Immunol 2023; 14:1130821. [PMID: 37026003 PMCID: PMC10070743 DOI: 10.3389/fimmu.2023.1130821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 03/07/2023] [Indexed: 04/08/2023] Open
Abstract
Introduction There remains a need to better identify patients at highest risk for developing severe Coronavirus Disease 2019 (COVID-19) as additional waves of the pandemic continue to impact hospital systems. We sought to characterize the association of receptor for advanced glycation end products (RAGE), SARS-CoV-2 nucleocapsid viral antigen, and a panel of thromboinflammatory biomarkers with development of severe disease in patients presenting to the emergency department with symptomatic COVID-19. Methods Blood samples were collected on arrival from 77 patients with symptomatic COVID-19, and plasma levels of thromboinflammatory biomarkers were measured. Results Differences in biomarkers between those who did and did not develop severe disease or death 7 days after presentation were analyzed. After adjustment for multiple comparisons, RAGE, SARS-CoV-2 nucleocapsid viral antigen, interleukin (IL)-6, IL-10 and tumor necrosis factor receptor (TNFR)-1 were significantly elevated in the group who developed severe disease (all p<0.05). In a multivariable regression model, RAGE and SARS-CoV-2 nucleocapsid viral antigen remained significant risk factors for development of severe disease (both p<0.05), and each had sensitivity and specificity >80% on cut-point analysis. Discussion Elevated RAGE and SARS-CoV-2 nucleocapsid viral antigen on emergency department presentation are strongly associated with development of severe disease at 7 days. These findings are of clinical relevance for patient prognostication and triage as hospital systems continue to be overwhelmed. Further studies are warranted to determine the feasibility and utility of point-of care measurements of these biomarkers in the emergency department setting to improve patient prognostication and triage.
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Affiliation(s)
- Zachary A. Matthay
- Department of Surgery, Zuckerberg San Francisco General Hospital, University of California San Francisco, San Francisco, CA, United States
- *Correspondence: Zachary A. Matthay,
| | - Alexander T. Fields
- Department of Surgery, Zuckerberg San Francisco General Hospital, University of California San Francisco, San Francisco, CA, United States
| | - Katherine D. Wick
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, United States
| | - Chayse Jones
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, United States
| | - H. Clifford Lane
- Division of Clinical Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Kimberly Herrera
- Department of Surgery, Zuckerberg San Francisco General Hospital, University of California San Francisco, San Francisco, CA, United States
| | - Brenda Nuñez-Garcia
- Department of Surgery, Zuckerberg San Francisco General Hospital, University of California San Francisco, San Francisco, CA, United States
| | - Efstathios Gennatas
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, United States
| | - Carolyn M. Hendrickson
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
| | - Aaron E. Kornblith
- Department of Emergency Medicine, Zuckerberg San Francisco General Hospital, University of California San Francisco, San Francisco, CA, United States
| | - Michael A. Matthay
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, United States
| | - Lucy Z. Kornblith
- Department of Surgery, Zuckerberg San Francisco General Hospital, University of California San Francisco, San Francisco, CA, United States
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13
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Johnson LL, Tekabe Y, Zelonina T, Ma X, Zhang G, Goldklang M, D’Armiento J. Blocking RAGE expression after injury reduces inflammation in mouse model of acute lung injury. Respir Res 2023; 24:21. [PMID: 36670409 PMCID: PMC9852798 DOI: 10.1186/s12931-023-02324-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 01/11/2023] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Receptor for Advanced Glycated Endproducts (RAGE) plays a major role in the inflammatory response to infectious and toxin induced acute lung injury. We tested the hypothesis that a RAGE blocking antibody when administered after the onset of injury can reduce lung inflammation compared to control antibody. METHODS Male and female C57BL/6 (WT) mice were used. Forty-six received lipopolysaccharide (LPS) and 26 PBS by nasal instillation on day one, repeated on day three. On day 2, 36 mice receiving LPS were divided into two groups of 18, one treated with 200 μg of non-immune isotype control IgG and the second group treated with 200 μg of anti-RAGE Ab, each dose divided between IV and IP. Ten of the 46 were not treated. On day 4, before euthanasia, mice were injected with fluorescein isothiocyanate (FITC) labelled albumen. BALF and serum samples were collected as well as lung tissue for immunohistochemistry (IHC). BALF was analyzed for cell (leukocyte) counts, for FITC BALF/serum ratios indicating pulmonary vascular leak, and for cytokines/chemokines using bead based multiplex assays. Quantitative IHC was performed for MPO and RAGE. RESULTS Ten LPS mice showed minimal inflammation by all measures indicating poor delivery of LPS and were excluded from analysis leaving n = 11 in the LPS + IgG group and n = 12 in the LPS + anti-RAGE group. BALF cell counts were low in the PBS administered mice (4.9 ± 2.1 × 105/ml) and high in the LPS injured untreated mice (109 ± 34) and in the LPS + IgG mice (91 ± 54) while in comparison, LPS + anti-RAGE ab mice counts were significantly lower (51.3 ± 18 vs. LPS + IgG, P = 0.03). The BALF/serum FITC ratios were lower for the LPS + anti-RAGE mice than for the LPS + IgG mice indicating less capillary leakiness. Quantitative IHC RAGE staining was lower in the LPS + anti-RAGE ab mice than in the LPS + IgG treated mice (P = 0.02). CONCLUSIONS These results describe a four-day LPS protocol to sustain lung injury and allow for treatment and suggests that treatment aimed at blocking RAGE when given after onset of injury can reduce lung inflammation.
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Affiliation(s)
- Lynne L. Johnson
- grid.21729.3f0000000419368729Departments of Medicine, Anesthesiology, and Pathology, Columbia University, 622 West 168th St, PH 10-203, New York, NY 10032 USA
| | - Yared Tekabe
- grid.21729.3f0000000419368729Departments of Medicine, Anesthesiology, and Pathology, Columbia University, 622 West 168th St, PH 10-203, New York, NY 10032 USA
| | - Tina Zelonina
- grid.21729.3f0000000419368729Departments of Medicine, Anesthesiology, and Pathology, Columbia University, 622 West 168th St, PH 10-203, New York, NY 10032 USA
| | - Xinran Ma
- grid.21729.3f0000000419368729Departments of Medicine, Anesthesiology, and Pathology, Columbia University, 622 West 168th St, PH 10-203, New York, NY 10032 USA
| | - Geping Zhang
- grid.21729.3f0000000419368729Departments of Medicine, Anesthesiology, and Pathology, Columbia University, 622 West 168th St, PH 10-203, New York, NY 10032 USA
| | - Monica Goldklang
- grid.21729.3f0000000419368729Departments of Medicine, Anesthesiology, and Pathology, Columbia University, 622 West 168th St, PH 10-203, New York, NY 10032 USA
| | - Jeanine D’Armiento
- grid.21729.3f0000000419368729Departments of Medicine, Anesthesiology, and Pathology, Columbia University, 622 West 168th St, PH 10-203, New York, NY 10032 USA
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14
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Xiong X, Dou J, Shi J, Ren Y, Wang C, Zhang Y, Cui Y. RAGE inhibition alleviates lipopolysaccharides-induced lung injury via directly suppressing autophagic apoptosis of type II alveolar epithelial cells. Respir Res 2023; 24:24. [PMID: 36691012 PMCID: PMC9872382 DOI: 10.1186/s12931-023-02332-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 01/17/2023] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Advanced glycation end product receptor (RAGE) acts as a receptor of pro-inflammatory ligands and is highly expressed in alveolar epithelial cells (AECs). Autophagy in AECs has received much attention recently. However, the roles of autophagy and RAGE in the pathogenesis of acute lung injury remain unclear. Therefore, this study aimed to explore whether RAGE activation signals take part in the dysfunction of alveolar epithelial barrier through autophagic death. METHODS Acute lung injury animal models were established using C57BL/6 and Ager gene knockout (Ager -/- mice) mice in this study. A549 cells and primary type II alveolar epithelial (ATII) cells were treated with siRNA to reduce Ager gene expression. Autophagy was inhibited by 3-methyladenine (3-MA). Lung injury was assessed by histopathological examination. Cell viability was estimated by cell counting kit-8 (CCK-8) assay. The serum and bronchoalveolar lavage fluid (BALF) levels of interleukin (IL)-6, IL-8 and soluble RAGE (sRAGE) were evaluated by Enzyme-linked immunosorbent assay (ELISA). The involvement of RAGE signals, autophagy and apoptosis was assessed using western blots, immunohistochemistry, immunofluorescence, transmission electron microscopy and TUNEL test. RESULTS The expression of RAGE was promoted by lipopolysaccharide (LPS), which was associated with activation of autophagy both in mice lung tissues and A549 cells as well as primary ATII cells. sRAGE in BALF was positively correlated with IL-6 and IL-8 levels. Compared with the wild-type mice, inflammation and apoptosis in lung tissues were alleviated in Ager-/- mice. Persistently activated autophagy contributed to cell apoptosis, whereas the inhibition of autophagy by 3-MA protected lungs from damage. In addition, Ager knockdown inhibited LPS-induced autophagy activation and attenuated lung injury. In vitro, knockdown of RAGE significantly suppressed the activation of LPS-induced autophagy and apoptosis of A549 and primary ATII cells. Furthermore, RAGE activated the downstream STAT3 signaling pathway. CONCLUSION RAGE plays an essential role in the pathogenesis of ATII cells injury. Our results suggested that RAGE inhibition alleviated LPS-induced lung injury by directly suppressing autophagic apoptosis of alveolar epithelial cells.
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Affiliation(s)
- Xi Xiong
- grid.16821.3c0000 0004 0368 8293Department of Critical Care Medicine, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Infection, Immunity and Intensive Care Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China
| | - Jiaying Dou
- grid.16821.3c0000 0004 0368 8293Department of Critical Care Medicine, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Infection, Immunity and Intensive Care Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China
| | - Jingyi Shi
- grid.16821.3c0000 0004 0368 8293Department of Critical Care Medicine, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, 200062 China
| | - Yuqian Ren
- grid.16821.3c0000 0004 0368 8293Department of Critical Care Medicine, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, 200062 China
| | - Chunxia Wang
- grid.16821.3c0000 0004 0368 8293Institute of Pediatric Infection, Immunity and Intensive Care Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.415625.10000 0004 0467 3069Clinical Research Unit, Shanghai Children’s Hospital, Shanghai, 200062 China
| | - Yucai Zhang
- grid.16821.3c0000 0004 0368 8293Department of Critical Care Medicine, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Infection, Immunity and Intensive Care Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, 200062 China
| | - Yun Cui
- grid.16821.3c0000 0004 0368 8293Department of Critical Care Medicine, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Infection, Immunity and Intensive Care Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, 200062 China
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15
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Bangar NS, Gvalani A, Ahmad S, Khan MS, Tupe RS. Understanding the role of glycation in the pathology of various non-communicable diseases along with novel therapeutic strategies. Glycobiology 2022; 32:1068-1088. [PMID: 36074518 DOI: 10.1093/glycob/cwac060] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 08/10/2022] [Accepted: 09/02/2022] [Indexed: 01/07/2023] Open
Abstract
Glycation refers to carbonyl group condensation of the reducing sugar with the free amino group of protein, which forms Amadori products and advanced glycation end products (AGEs). These AGEs alter protein structure and function by configuring a negative charge on the positively charged arginine and lysine residues. Glycation plays a vital role in the pathogenesis of metabolic diseases, brain disorders, aging, and gut microbiome dysregulation with the aid of 3 mechanisms: (i) formation of highly reactive metabolic pathway-derived intermediates, which directly affect protein function in cells, (ii) the interaction of AGEs with its associated receptors to create oxidative stress causing the activation of transcription factor NF-κB, and (iii) production of extracellular AGEs hinders interactions between cellular and matrix molecules affecting vascular and neural genesis. Therapeutic strategies are thus required to inhibit glycation at different steps, such as blocking amino and carbonyl groups, Amadori products, AGEs-RAGE interactions, chelating transition metals, scavenging free radicals, and breaking crosslinks formed by AGEs. The present review focused on explicitly elaborating the impact of glycation-influenced molecular mechanisms in developing and treating noncommunicable diseases.
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Affiliation(s)
- Nilima S Bangar
- Symbiosis School of Biological Sciences (SSBS), Symbiosis International (Deemed University) (SIU), Lavale, Pune 412115, Maharashtra, India
| | - Armaan Gvalani
- Symbiosis School of Biological Sciences (SSBS), Symbiosis International (Deemed University) (SIU), Lavale, Pune 412115, Maharashtra, India
| | - Saheem Ahmad
- Department of Medical Laboratory Sciences, University of Hail, Hail City 2440, Saudi Arabia
| | - Mohd S Khan
- Department of Biochemistry, Protein Research Chair, King Saud University, Riyadh 11451, Saudi Arabia
| | - Rashmi S Tupe
- Symbiosis School of Biological Sciences (SSBS), Symbiosis International (Deemed University) (SIU), Lavale, Pune 412115, Maharashtra, India
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16
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Lin L, Li J, Song Q, Cheng W, Chen P. The role of HMGB1/RAGE/TLR4 signaling pathways in cigarette smoke-induced inflammation in chronic obstructive pulmonary disease. Immun Inflamm Dis 2022; 10:e711. [PMID: 36301039 PMCID: PMC9552978 DOI: 10.1002/iid3.711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 09/08/2022] [Accepted: 09/09/2022] [Indexed: 11/10/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a common chronic respiratory disease with irreversible and continuous progression. It has become the fifth most burdensome disease and the third most deadly disease globally. Therefore, the prevention and treatment of COPD are urgent, and it is also important to clarify the pathogenesis of it. Smoking is the main and most common risk factor for COPD. Cigarette smoke (CS) can cause lung inflammation and other pathological mechanisms in the airways and lung tissue. Airway inflammation is one of the important mechanisms leading to the pathogenesis of COPD. Recent studies have shown that high mobility group box 1 (HMGB1) is involved in the occurrence and development of respiratory diseases, including COPD. HMGB1 is a typical damage-associated molecular pattern (DAMP) protein, which mainly exerts its activity by binding to the receptor for advanced glycation end products (RAGE) and toll-like receptor 4 (TLR4) and further participate in the process of airway inflammation. Studies have shown that the abnormal expression of HMGB1, RAGE, and TLR4 are related to inflammation in COPD. Herein, we discuss the roles of HMGB1, RAGE, and TLR4 in CS/cigarette smoke extract-induced inflammation in COPD, providing a new target for the diagnosis, treatment and prevention of COPD.
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Affiliation(s)
- Ling Lin
- Department of Respiratory and Critical Care Medicine, The Second Xiangya HospitalCentral South UniversityChangshaHunanChina,Diagnosis and Treatment Center of Respiratory DiseaseCentral South UniversityChangshaHunanChina
| | - Jing Li
- Department of Respiratory and Critical Care Medicine, The Second Xiangya HospitalCentral South UniversityChangshaHunanChina,Research Unit of Respiratory DiseaseCentral South UniversityChangshaHunanChina,Diagnosis and Treatment Center of Respiratory DiseaseCentral South UniversityChangshaHunanChina
| | - Qing Song
- Department of Respiratory and Critical Care Medicine, The Second Xiangya HospitalCentral South UniversityChangshaHunanChina,Research Unit of Respiratory DiseaseCentral South UniversityChangshaHunanChina,Diagnosis and Treatment Center of Respiratory DiseaseCentral South UniversityChangshaHunanChina
| | - Wei Cheng
- Department of Respiratory and Critical Care Medicine, The Second Xiangya HospitalCentral South UniversityChangshaHunanChina,Research Unit of Respiratory DiseaseCentral South UniversityChangshaHunanChina,Diagnosis and Treatment Center of Respiratory DiseaseCentral South UniversityChangshaHunanChina
| | - Ping Chen
- Department of Respiratory and Critical Care Medicine, The Second Xiangya HospitalCentral South UniversityChangshaHunanChina,Research Unit of Respiratory DiseaseCentral South UniversityChangshaHunanChina,Diagnosis and Treatment Center of Respiratory DiseaseCentral South UniversityChangshaHunanChina
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17
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Hernández-Díazcouder A, González-Ramírez J, Sanchez F, Leija-Martínez JJ, Martínez-Coronilla G, Amezcua-Guerra LM, Sánchez-Muñoz F. Negative Effects of Chronic High Intake of Fructose on Lung Diseases. Nutrients 2022; 14:nu14194089. [PMID: 36235741 PMCID: PMC9571075 DOI: 10.3390/nu14194089] [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: 08/25/2022] [Revised: 09/23/2022] [Accepted: 09/28/2022] [Indexed: 11/09/2022] Open
Abstract
In the modern diet, excessive fructose intake (>50 g/day) had been driven by the increase, in recent decades, of the consumption of sugar-sweetened beverages. This phenomenon has dramatically increased within the Caribbean and Latin American regions. Epidemiological studies show that chronic high intake of fructose related to sugar-sweetened beverages increases the risk of developing several non-communicable diseases, such as chronic obstructive pulmonary disease and asthma, and may also contribute to the exacerbation of lung diseases, such as COVID-19. Evidence supports several mechanisms—such as dysregulation of the renin−angiotensin system, increased uric acid production, induction of aldose reductase activity, production of advanced glycation end-products, and activation of the mTORC1 pathway—that can be implicated in lung damage. This review addresses how these pathophysiologic and molecular mechanisms may explain the lung damage resulting from high intake of fructose.
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Affiliation(s)
| | - Javier González-Ramírez
- Cellular Biology Laboratory, Faculty of Nursing, Universidad Autónoma de Baja California Campus Mexicali, Mexicali 21100, Mexico
| | - Fausto Sanchez
- Department of Agricultural and Animal Production, Universidad Autónoma Metropolitana Xochimilco, Mexico City 04960, Mexico
| | - José J. Leija-Martínez
- Master and Doctorate Program in Medical, Dental, and Health Sciences, Faculty of Medicine, Universidad Nacional Autónoma de México Campus Ciudad Universitaria, Mexico City 04510, Mexico
- Research Laboratory of Pharmacology, Hospital Infantil de Mexico Federico Gómez, Mexico City 06720, Mexico
| | - Gustavo Martínez-Coronilla
- Histology Laboratory, Faculty of Medicine, Universidad Autónoma de Baja California Campus Mexicali, Mexicali 21100, Mexico
| | - Luis M. Amezcua-Guerra
- Department of Immunology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City 14080, Mexico
| | - Fausto Sánchez-Muñoz
- Department of Immunology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City 14080, Mexico
- Correspondence: ; Tel.: +52-5573-2911 (ext. 21310)
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Receptor for Advanced Glycation End-Products Promotes Activation of Alveolar Macrophages through the NLRP3 Inflammasome/TXNIP Axis in Acute Lung Injury. Int J Mol Sci 2022; 23:ijms231911659. [PMID: 36232959 PMCID: PMC9569658 DOI: 10.3390/ijms231911659] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/26/2022] [Accepted: 09/28/2022] [Indexed: 11/05/2022] Open
Abstract
The roles of thioredoxin-interacting protein (TXNIP) and receptor for advanced glycation end-products (RAGE)-dependent mechanisms of NOD-like receptor family, pyrin domain containing 3 (NLRP3) inflammasome-driven macrophage activation during acute lung injury are underinvestigated. Cultured THP-1 macrophages were treated with a RAGE agonist (S100A12), with or without a RAGE antagonist; cytokine release and intracytoplasmic production of reactive oxygen species (ROS) were assessed in response to small interfering RNA knockdowns of TXNIP and NLRP3. Lung expressions of TXNIP and NLRP3 and alveolar levels of IL-1β and S100A12 were measured in mice after acid-induced lung injury, with or without administration of RAGE inhibitors. Alveolar macrophages from patients with acute respiratory distress syndrome and from mechanically ventilated controls were analyzed using fluorescence-activated cell sorting. In vitro, RAGE promoted cytokine release and ROS production in macrophages and upregulated NLRP3 and TXNIP mRNA expression in response to S100A12. TXNIP inhibition downregulated NLRP3 gene expression and RAGE-mediated release of IL-1β by macrophages in vitro. In vivo, RAGE, NLRP3 and TXNIP lung expressions were upregulated during experimental acute lung injury, a phenomenon being reversed by RAGE inhibition. The numbers of cells expressing RAGE, NLRP3 and TXNIP among a specific subpopulation of CD16+CD14+CD206- (“pro-inflammatory”) alveolar macrophages were higher in patients with lung injury. This study provides a novel proof-of-concept of complex RAGE–TXNIP–NLRP3 interactions during macrophage activation in acute lung injury.
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Hsieh PC, Wu YK, Yang MC, Su WL, Kuo CY, Lan CC. Deciphering the role of damage-associated molecular patterns and inflammatory responses in acute lung injury. Life Sci 2022; 305:120782. [PMID: 35809663 DOI: 10.1016/j.lfs.2022.120782] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 06/20/2022] [Accepted: 07/01/2022] [Indexed: 11/29/2022]
Abstract
Acute lung injury (ALI) is characterized by diffuse pulmonary infiltrates and causes great mortality. ALI presents with overproduction of proinflammatory cytokines, cell death, destruction of alveoli-endothelial barriers, and neutrophil infiltration in lung tissues. Damage-associated molecular patterns (DAMPs) are molecules released from damaged cells due to infection, trauma, etc. DAMPs activate innate and adaptive immunity, trigger inflammatory responses, and are important in the initiation and development of ALI. We reviewed the literatures on DAMPs in ALI. Alveolar macrophages (AMs), neutrophils, and epithelial cells (AECs) are important in the pathogenesis of ALI. We comprehensively analyzed the interaction between DAMPs and AMs, alveolar neutrophils, and AECs. During the initial stage of ALI, ruptured cell membranes or destroyed mitochondria release DAMPs. DAMPs activate the inflammasome in nearby sentinel immune cells, such as AMs. AMs produce IL-1β and other cytokines. These mediators upregulate adhesion molecules of the capillary endothelium that facilitate neutrophil recruitment. The recruited neutrophils detect DAMPs using formyl peptide receptors on the membrane, guiding their migration to the injured site. The accumulation of immune cells, cytokines, chemokines, proteases, etc., results in diffuse alveolar damage and pulmonary hyperpermeability with protein-rich fluid retention. Some clinical studies have shown that patients with ALI with higher circulating DAMPs have higher mortality rates. In conclusion, DAMPs are important in the initiation and progression of ALI. The interactions between DAMPs and AMs, neutrophils, and AECs are important in ALI. This review comprehensively addresses the mechanisms of DAMPs and their interactions in ALI.
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Affiliation(s)
- Po-Chun Hsieh
- Department of Chinese Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan; Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Yao-Kuang Wu
- Division of Pulmonary Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan; School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Mei-Chen Yang
- Division of Pulmonary Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan; School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Wen-Lin Su
- Division of Pulmonary Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan; School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Chan-Yen Kuo
- Department of Research, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Chou-Chin Lan
- Division of Pulmonary Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan; School of Medicine, Tzu Chi University, Hualien, Taiwan.
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Xu W, Wu CJ, Jiao YM, Mei XL, Huang L, Qin EQ, Tu B, Zhao P, Wang LF, Chen WW. Soluble Receptor for Advanced Glycation End Product Is Involved in the Inflammatory Response of Human Adenovirus-Infected Patients. Front Microbiol 2022; 13:923215. [PMID: 35875560 PMCID: PMC9301492 DOI: 10.3389/fmicb.2022.923215] [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: 04/19/2022] [Accepted: 06/15/2022] [Indexed: 11/13/2022] Open
Abstract
Human adenovirus (HAdV) infection causes excessive inflammation associated with severe tissue injury, such as pneumonia. The molecules involved in the underlying inflammatory mechanisms remain to be elucidated. Receptor for advanced glycation end product (RAGE) is mainly expressed on immune cells and lung tissues, and it is a key factor in the initiation and development of inflammation. RAGE can be cleaved by metalloprotease 9 (MMP9) to release the extracellular segment, which is named soluble RAGE (sRAGE), into the intercellular space, where it can bind to RAGE ligands and block RAGE activation and subsequent inflammation. In our study, we enrolled HAdV-infected patients and their contacts to examine the relationship between sRAGE and inflammation induced by HAdV infection. The results showed that HAdV infection stimulated inflammatory cytokine secretion, increased such as high mobility group box 1 (HMGB1) levels, and suppressed sRAGE expression. sRAGE levels were significantly different between patients with or without pneumonia. We also found that MMP9 was significantly lower in patients with pneumonia, and it was positively correlated with sRAGE levels over 7 days after disease onset. The mitogen-activated protein kinase (MAPK) pathway is an important immune activation signaling pathway that is regulated by RAGE. We observed the activation of the MAPK pathway in the peripheral blood mononuclear cells (PBMCs) of patients. Negative correlations between sRAGE and phosphorylated JNK and p38 were observed. These results suggest that sRAGE is involved in HAdV-induced inflammatory responses, and might be a potential therapeutic target to alleviate the HAdV-induced excessive inflammation.
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Affiliation(s)
- Wen Xu
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Cheng-Jun Wu
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
- IC Technology Key Lab of Liaoning, School of Biomedical Engineering, Dalian University of Technology, Dalian, China
| | - Yan-Mei Jiao
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Xiao-Le Mei
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Lei Huang
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - En-Qiang Qin
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Bo Tu
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Peng Zhao
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Li-Feng Wang
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Wei-Wei Chen
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
- *Correspondence: Wei-Wei Chen,
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Yamaguchi K, Iwamoto H, Sakamoto S, Horimasu Y, Masuda T, Miyamoto S, Nakashima T, Fujitaka K, Hamada H, Hattori N. Association of the RAGE/RAGE-ligand axis with interstitial lung disease and its acute exacerbation. Respir Investig 2022; 60:531-542. [PMID: 35504814 DOI: 10.1016/j.resinv.2022.04.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 03/10/2022] [Accepted: 04/12/2022] [Indexed: 06/14/2023]
Abstract
The receptor for advanced glycation end product (RAGE) is a transmembrane receptor highly expressed in type 1 pneumocytes of healthy lungs. RAGE is considered to play a homeostatic role in the lung, as RAGE knockout mice develop lung fibrosis as they age. In contrast, RAGE can bind numerous ligands, including high-mobility group box 1 (HMGB1). These interactions initiate pro-inflammatory signaling associated with the pathogenesis of lung injury and interstitial lung disease (ILD), including idiopathic pulmonary fibrosis (IPF). ILD is a broad category of diffuse parenchymal lung disease characterized by various extents of lung fibrosis and inflammation, and IPF is a common and progressive ILD of unknown cause. The prognosis of patients with IPF is poor, and acute exacerbation of IPF (AE-IPF) is one of the main causes of death. Recent reports indicate that acute exacerbations can occur in other ILDs (AE-ILD). Notably, ILD is frequently observed in patients with lung cancer, and AE-ILD after surgical procedures or the initiation of chemotherapy for concomitant lung cancer are clinically important due to their association with increased mortality. In this review, we summarize the associations of RAGE/soluble RAGE (sRAGE)/RAGE ligands with the pathogenesis and clinical course of ILD, including IPF and AE-IPF. Additionally, the potential use of sRAGE and RAGE ligands as predictive markers of AE-IPF and cancer treatment-triggered AE-ILD is also discussed.
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Affiliation(s)
- Kakuhiro Yamaguchi
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, 734-8551, Hiroshima, Japan.
| | - Hiroshi Iwamoto
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, 734-8551, Hiroshima, Japan
| | - Shinjiro Sakamoto
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, 734-8551, Hiroshima, Japan
| | - Yasushi Horimasu
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, 734-8551, Hiroshima, Japan
| | - Takeshi Masuda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, 734-8551, Hiroshima, Japan
| | - Shintaro Miyamoto
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, 734-8551, Hiroshima, Japan
| | - Taku Nakashima
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, 734-8551, Hiroshima, Japan
| | - Kazunori Fujitaka
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, 734-8551, Hiroshima, Japan
| | - Hironobu Hamada
- Department of Physical Analysis and Therapeutic Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Noboru Hattori
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, 734-8551, Hiroshima, Japan
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Liu G, Li Y, Zhou J, Xu J, Yang B. PM2.5 deregulated microRNA and inflammatory microenvironment in lung injury. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 91:103832. [PMID: 35189342 DOI: 10.1016/j.etap.2022.103832] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 01/24/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
PM2.5 negatively affects human health, particularly lung injury. However, the role of PM2.5-regulated miRNAs in lung injury remains unknown. MiRNA array results showed mmu-miR-467c-5p regulated Prdx6 expression to adapt to lung injury condition, and deregulated miRNAs regulated macrophages to build a localized inflammatory microenvironment. In addition, miRNAs were transferred into adjacent alveolar epithelial cells, regulating the expressions of cell injury signaling pathway-targeted genes, and accelerating local lung tissue injury. NO and RAGE were increased in the coculture supernatant, and SPD was decreased. PM2.5 exposure induced local lung injury, promoted inflammation in local lung tissues, increased capillary permeability in the lung tissue, and rearranged the local lung tissue structure. We also confirmed in AECOPD patients TNF-α and IL-1β levels are obviously higher than healthy person. These findings provide new mechanistic insights regarding PM2.5 and targeted miRNAs in the inflammatory microenvironment, which increases our knowledge of PM2.5-lung injury interactions.
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Affiliation(s)
- Guangyan Liu
- Department of Pathogen Biology, Shenyang Medical College, No. 146, Huanghe North Street, Shenyang, People's Republic of China.
| | - Yunxia Li
- Department of Respiratory Medicine, Affiliated Center Hospital of Shenyang Medical College, No. 5, Nanqi West Road, Shenyang, People's Republic of China.
| | - Jiaming Zhou
- Franklin and Marshall College, 415 Harrisburg Ave, Lancaster City, PA, USA.
| | - Jia Xu
- Department of Pathogen Biology, Shenyang Medical College, No. 146, Huanghe North Street, Shenyang, People's Republic of China.
| | - Biao Yang
- Department of Pathogen Biology, Shenyang Medical College, No. 146, Huanghe North Street, Shenyang, People's Republic of China.
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23
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Sin S, Lim MN, Kim J, Bak SH, Kim WJ. Association between plasma sRAGE and emphysema according to the genotypes of AGER gene. BMC Pulm Med 2022; 22:58. [PMID: 35144588 PMCID: PMC8832795 DOI: 10.1186/s12890-022-01848-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 01/31/2022] [Indexed: 11/22/2022] Open
Abstract
Background Higher soluble receptor for advanced glycation end product (sRAGE) levels are considered to be associated with severe emphysema. However, the relationship remains uncertain when the advanced glycation end-product specific receptor (AGER) gene is involved. We aimed to analyse the association between sRAGE levels and emphysema according to the genotypes of rs2070600 in the AGER gene. Methods We genotyped rs2070600 and measured the plasma concentration of sRAGE in each participant. Emphysema was quantified based on the chest computed tomography findings. We compared sRAGE levels based on the presence or absence and severity of emphysema in each genotype. Multiple logistic and linear regression models were used for the analyses. Results A total of 436 participants were included in the study. Among them, 64.2% had chronic obstructive pulmonary disease and 34.2% had emphysema. Among the CC-genotyped participants, the sRAGE level was significantly higher in participants without emphysema than in those with emphysema (P < 0.001). In addition, sRAGE levels were negatively correlated with emphysema severity in CC-genotyped patients (r = − 0.268 P < 0.001). Multiple regression analysis revealed that sRAGE was an independent protective factor for the presence of emphysema (adjusted odds ratio, 0.24; 95% confidence interval (CI) 0.11–0.51) and severity of emphysema (β = − 3.28, 95% CI − 4.86 to − 1.70) in CC-genotyped participants. Conclusion Plasma sRAGE might be a biomarker with a protective effect on emphysema among CC-genotyped patients of rs2070600 on the AGER gene. This is important in determining the target group for the future prediction and treatment of emphysema. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-022-01848-9.
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Affiliation(s)
- Sooim Sin
- Department of Internal Medicine, School of Medicine, Kangwon National University Hospital, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Myung-Nam Lim
- Department of Internal Medicine and Environmental Health Center, School of Medicine, Kangwon National University Hospital, Kangwon National University, Chuncheon, Republic of Korea
| | - Jeeyoung Kim
- Department of Internal Medicine and Environmental Health Center, School of Medicine, Kangwon National University Hospital, Kangwon National University, Chuncheon, Republic of Korea
| | - So Hyeon Bak
- Department of Radiology, , School of Medicine, Kangwon National University Hospital, Kangwon National University, Chuncheon, Republic of Korea
| | - Woo Jin Kim
- Department of Internal Medicine, School of Medicine, Kangwon National University Hospital, Kangwon National University, Chuncheon, 24341, Republic of Korea.
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24
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Navel V, Malecaze J, Belville C, Choltus H, Henrioux F, Dutheil F, Malecaze F, Chiambaretta F, Blanchon L, Sapin V. Dysregulation of Receptor for Advanced Glycation End Products (RAGE) Expression as a Biomarker of Keratoconus. DISEASE MARKERS 2022; 2022:1543742. [PMID: 35075374 PMCID: PMC8783726 DOI: 10.1155/2022/1543742] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 12/11/2021] [Accepted: 01/03/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND Because of the implications of Receptor for Advanced Glycation End Products (RAGE) in keratoconus (KC), we describe a differential expression of RAGE transcripts and proteins in corneal tissues and tears of KC and healthy patients. METHODS Using a case-controlled study, corneal epitheliums and tears of KC and healthy subjects were obtained during corneal collagen cross-linking and photorefractive keratectomy (PKR) and during usual consultations. Quantitative reverse transcription (RT-qPCR) and Western-Blot were performed to analyze RAGE transcripts and proteins' expression in corneal tissues and tears. RESULTS One hundred and six patients were included in this study. The characteristics of the patients were as follows: 56 KC (25 corneal epithelium and 31 tears) and 50 control subjects (25 corneal epithelium and 25 tears). Transcripts of RAGE, HMGB1, and S100 family ligands were quantified by RT-qPCR, identifying a significantly higher expression of RAGE and HMGB1 in the healthy group than in the KC group (p = 0.03 and 0.04, respectively). Western Blot showed a significantly higher fl-RAGE expression in KC corneal epithelium than control (p < 0.001) and lower s-RAGE expression in KC tears than control (p = 0.04). CONCLUSIONS Linked with the inflammatory process occurring in KC pathophysiology, we propose for the first time that the RAGE expression (total and truncated forms of receptor and ligands) in KC corneal tissues and tear samples provides viable biomarkers.
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Affiliation(s)
- Valentin Navel
- University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Ophthalmology, F-63000 Clermont-Ferrand, France
- Translational Approach to Epithelial Injury and Repair Team, University of Clermont Auvergne, CNRS UMR 6293, INSERM U1103, Genetic Reproduction and Development Laboratory (GReD), F-63000 Clermont-Ferrand, France
| | - Jean Malecaze
- University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Ophthalmology, F-63000 Clermont-Ferrand, France
- Translational Approach to Epithelial Injury and Repair Team, University of Clermont Auvergne, CNRS UMR 6293, INSERM U1103, Genetic Reproduction and Development Laboratory (GReD), F-63000 Clermont-Ferrand, France
| | - Corinne Belville
- Translational Approach to Epithelial Injury and Repair Team, University of Clermont Auvergne, CNRS UMR 6293, INSERM U1103, Genetic Reproduction and Development Laboratory (GReD), F-63000 Clermont-Ferrand, France
| | - Héléna Choltus
- Translational Approach to Epithelial Injury and Repair Team, University of Clermont Auvergne, CNRS UMR 6293, INSERM U1103, Genetic Reproduction and Development Laboratory (GReD), F-63000 Clermont-Ferrand, France
| | - Fanny Henrioux
- Translational Approach to Epithelial Injury and Repair Team, University of Clermont Auvergne, CNRS UMR 6293, INSERM U1103, Genetic Reproduction and Development Laboratory (GReD), F-63000 Clermont-Ferrand, France
| | - Frédéric Dutheil
- University of Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, CHU Clermont-Ferrand, University Hospital of Clermont-Ferrand, Preventive and Occupational Medicine, Witty Fit, F-63000 Clermont-Ferrand, France
| | - François Malecaze
- Ophthalmology Department, Pierre-Paul Riquet Hospital, Toulouse University Hospital, Toulouse, France
| | - Frédéric Chiambaretta
- University Hospital of Clermont-Ferrand, CHU Clermont-Ferrand, Ophthalmology, F-63000 Clermont-Ferrand, France
- Translational Approach to Epithelial Injury and Repair Team, University of Clermont Auvergne, CNRS UMR 6293, INSERM U1103, Genetic Reproduction and Development Laboratory (GReD), F-63000 Clermont-Ferrand, France
| | - Loïc Blanchon
- Translational Approach to Epithelial Injury and Repair Team, University of Clermont Auvergne, CNRS UMR 6293, INSERM U1103, Genetic Reproduction and Development Laboratory (GReD), F-63000 Clermont-Ferrand, France
| | - Vincent Sapin
- Translational Approach to Epithelial Injury and Repair Team, University of Clermont Auvergne, CNRS UMR 6293, INSERM U1103, Genetic Reproduction and Development Laboratory (GReD), F-63000 Clermont-Ferrand, France
- Department of Biochemistry and Molecular Genetic, CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France
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Keefe J, Yao C, Hwang SJ, Courchesne P, Lee GY, Dupuis J, Mizgerd JP, O’Connor G, Washko GR, Cho MH, Silverman EK, Levy D. An Integrative Genomic Strategy Identifies sRAGE as a Causal and Protective Biomarker of Lung Function. Chest 2022; 161:76-84. [PMID: 34237330 PMCID: PMC8783029 DOI: 10.1016/j.chest.2021.06.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 06/21/2021] [Accepted: 06/23/2021] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND There are few clinically useful circulating biomarkers of lung function and lung disease. We hypothesized that genome-wide association studies (GWAS) of circulating proteins in conjunction with GWAS of pulmonary traits represents a clinically relevant approach to identifying causal proteins and therapeutically useful insights into mechanisms related to lung function and disease. STUDY QUESTION Can an integrative genomic strategy using GWAS of plasma soluble receptor for advanced glycation end-products (sRAGE) levels in conjunction with GWAS of lung function traits identify putatively causal relations of sRAGE to lung function? STUDY DESIGN AND METHODS Plasma sRAGE levels were measured in 6,861 Framingham Heart Study participants and GWAS of sRAGE was conducted to identify protein quantitative trait loci (pQTL), including cis-pQTL variants at the sRAGE protein-coding gene locus (AGER). We integrated sRAGE pQTL variants with variants from GWAS of lung traits. Colocalization of sRAGE pQTL variants with lung trait GWAS variants was conducted, and Mendelian randomization was performed using sRAGE cis-pQTL variants to infer causality of sRAGE for pulmonary traits. Cross-sectional and longitudinal protein-trait association analyses were conducted for sRAGE in relation to lung traits. RESULTS Colocalization identified shared genetic signals for sRAGE with lung traits. Mendelian randomization analyses suggested protective causal relations of sRAGE to several pulmonary traits. Protein-trait association analyses demonstrated higher sRAGE levels to be cross-sectionally and longitudinally associated with preserved lung function. INTERPRETATION sRAGE is produced by type I alveolar cells, and it acts as a decoy receptor to block the inflammatory cascade. Our integrative genomics approach provides evidence for sRAGE as a causal and protective biomarker of lung function, and the pattern of associations is suggestive of a protective role of sRAGE against restrictive lung physiology. We speculate that targeting the AGER/sRAGE axis may be therapeutically beneficial for the treatment and prevention of inflammation-related lung disease.
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Affiliation(s)
- Joshua Keefe
- Framingham Heart Study, Framingham, MA,Population Sciences Branch, Division of Intramural Research, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Chen Yao
- Framingham Heart Study, Framingham, MA,Population Sciences Branch, Division of Intramural Research, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Shih-Jen Hwang
- Framingham Heart Study, Framingham, MA,Population Sciences Branch, Division of Intramural Research, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Paul Courchesne
- Framingham Heart Study, Framingham, MA,Population Sciences Branch, Division of Intramural Research, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Gha Young Lee
- Framingham Heart Study, Framingham, MA,Population Sciences Branch, Division of Intramural Research, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Josée Dupuis
- Department of Biostatistics, Boston University School of Public Health, Boston, MA
| | - Joseph P. Mizgerd
- Pulmonary Center and Department of Medicine, Boston University School of Medicine, Boston, MA
| | - George O’Connor
- Pulmonary Center and Department of Medicine, Boston University School of Medicine, Boston, MA
| | - George R. Washko
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, MA
| | - Michael H. Cho
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, MA,Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, MA
| | - Edwin K. Silverman
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, MA,Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, MA
| | - Daniel Levy
- Framingham Heart Study, Framingham, MA,Population Sciences Branch, Division of Intramural Research, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD,CORRESPONDENCE TO: Daniel Levy, MD
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26
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Miyagawa T, Iwata Y, Oshima M, Ogura H, Sato K, Nakagawa S, Yamamura Y, Kamikawa Y, Miyake T, Kitajima S, Toyama T, Hara A, Sakai N, Shimizu M, Furuichi K, Munesue S, Yamamoto Y, Kaneko S, Wada T. Soluble receptor for advanced glycation end products protects from ischemia- and reperfusion-induced acute kidney injury. Biol Open 2021; 11:273473. [PMID: 34812852 PMCID: PMC8822355 DOI: 10.1242/bio.058852] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 11/11/2021] [Indexed: 11/20/2022] Open
Abstract
The full-length receptor for advanced glycation end products (RAGE) is a multiligand pattern recognition receptor. High-mobility group box 1 (HMGB1) is a RAGE ligand of damage-associated molecular patterns that elicits inflammatory reactions. The shedded isoform of RAGE and endogenous secretory RAGE (esRAGE), a splice variant, are soluble isoforms (sRAGE) that act as organ-protective decoys. However, the pathophysiologic roles of RAGE/sRAGE in acute kidney injury (AKI) remain unclear. We found that AKI was more severe, with enhanced renal tubular damage, macrophage infiltration, and fibrosis, in mice lacking both RAGE and sRAGE than in wild-type control mice. Using murine tubular epithelial cells (TECs), we demonstrated that hypoxia upregulated messenger RNA (mRNA) expression of HMGB1 and tumor necrosis factor α (TNF-α), whereas RAGE and esRAGE expressions were paradoxically decreased. Moreover, the addition of recombinant sRAGE canceled hypoxia-induced inflammation and promoted cell viability in cultured TECs. sRAGE administration prevented renal tubular damage in models of ischemia/reperfusion-induced AKI and of anti-glomerular basement membrane (anti-GBM) glomerulonephritis. These results suggest that sRAGE is a novel therapeutic option for AKI.
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Affiliation(s)
- Taro Miyagawa
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan.,Division of Infection Control, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Megumi Oshima
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Hisayuki Ogura
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Koichi Sato
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Shiori Nakagawa
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Yuta Yamamura
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Yasutaka Kamikawa
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Taito Miyake
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Shinji Kitajima
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Tadashi Toyama
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Akinori Hara
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan.,Division of Blood Purification, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Miho Shimizu
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Kengo Furuichi
- Department of Nephrology, Kanazawa Medical University School of Medicine, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa 920-0293, Japan
| | - Seiichi Munesue
- Department of Biochemistry and Molecular Vascular Biology, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Yasuhiko Yamamoto
- Department of Biochemistry and Molecular Vascular Biology, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Shuichi Kaneko
- Department of System Biology, Institute of Medical Pharmaceutical and Health Science, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8641, Japan
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Acute Lung Injury Biomarkers in the Prediction of COVID-19 Severity: Total Thiol, Ferritin and Lactate Dehydrogenase. Antioxidants (Basel) 2021; 10:antiox10081221. [PMID: 34439469 PMCID: PMC8388961 DOI: 10.3390/antiox10081221] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/24/2021] [Accepted: 07/27/2021] [Indexed: 12/11/2022] Open
Abstract
SARS-CoV-2 (COVID-19) patients who develop acute respiratory distress syndrome (ARDS) can suffer acute lung injury, or even death. Early identification of severe disease is essential in order to control COVID-19 and improve prognosis. Oxidative stress (OS) appears to play an important role in COVID-19 pathogenesis; we therefore conceived a study of the potential discriminative ability of serum biomarkers in patients with ARDS and those with mild to moderate disease (non-ARDS). 60 subjects were enrolled in a single-centre, prospective cohort study of consecutively admitted patients: 29 ARDS/31 non-ARDS. Blood samples were drawn and marker levels analysed by spectrophotometry and immunoassay techniques. C-reactive protein (CRP), lactate dehydrogenase (LDH), and ferritin were significantly higher in ARDS versus non-ARDS cases at hospital admission. Leukocytes, LDH, ferritin, interleukin 6 (IL-6) and tumour necrosis factor alpha (TNF-α) were also significantly elevated in ARDS compared to non-ARDS patients during the hospital stay. Total thiol (TT) was found to be significantly lower in ARDS. Conversely, D-dimer, matrix metalloproteinase-9 (MMP-9) and advanced glycosylated end products (AGE) were elevated. Leukocytes, LDH, CRP, ferritin and IL-6 were found to be significantly higher in non-survivors. However, lymphocyte, tumour necrosis factor beta (TGF-β), and TT were lower. In summary, our results support the potential value of TT, ferritin and LDH as prognostic biomarkers for ARDS development in COVID-19 patients, distinguishing non-ARDS from ARDS (AUCs = 0.92; 0.91; 0.89) in a fast and cost-effective manner. These oxidative/inflammatory parameters appear to play an important role in COVID-19 monitoring and can be used in the clinical management of patients.
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28
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Han J, Li S, Feng Y, He Y, Hong W, Ye Z. A novel circular RNA (hsa_circ_0059930)-mediated miRNA-mRNA axis in the lipopolysaccharide-induced acute lung injury model of MRC-5 cells. Bioengineered 2021; 12:1739-1751. [PMID: 34002668 PMCID: PMC8806270 DOI: 10.1080/21655979.2021.1916276] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Circular RNA (circRNA) is a class of newly discovered endogenous non-coding RNA with closed circular structure. Some circRNAs have been reported to be closely associated with acute lung injury (ALI). While the expression profile of circRNAs in lipopolysaccharide (LPS)-induced ALI and the underlying roles are still not completely clear. The LPS-induced ALI model of MRC-5 cells was first established, and the expression profiles of circRNAs and mRNAs in LPS-induced MRC-5 cells were confirmed through RNA sequencing analysis. Gene Ontologyanalysis and Kyoto Encyclopedia of Genes and Genomes pathway analysis were also applied to predict the latent functions and pathways of the differential mRNAs. After hsa_circ_0059930 knockdown, the proliferation and apoptosis of MRC-5 cells were identified by CCK-8, flow cytometer, and western blot assays. And we predicted the network analysis of hsa_circ_0059930. We testified that LPS could markedly prevent proliferation and induce apoptosis of MRC-5 cells. We discovered a total of 820 differential circRNAs (560 upregulated and 260 downregulated circRNAs) and 484 differential mRNAs (240 upregulated and 244 downregulated mRNAs) in LPS-induced MRC-5 cells. Besides, hsa_circ_0059930 was identified to be significantly upregulated in LPS-induced MRC-5 cells, and knockdown of hsa_circ-0059930 could notably accelerate proliferation and suppress apoptosis of LPS-mediated MRC-5 cells. Moreover, through the network analysis of hsa_circ_0059930, we preliminarily screened the potential regulatory axis hsa_circ_0059930/hsa-miR-382-5p/Topoisomerase 1 (TOP1) in LPS-induced ALI. Our data contribute to understand the importance of circRNAs and mRNAs in LPS-induced ALI. We also provided many hsa_circ_0059930-mediated microRNA (miRNA)–mRNA axis, especially hsa_circ_0059930/hsa-miR-382-5p/TOP1 in LPS-induced ALI.
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Affiliation(s)
- Jianhua Han
- Department of Emergency, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shigeng Li
- Department of Emergency, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yawei Feng
- Department of Anesthesiology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yufeng He
- Department of Emergency, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Weilong Hong
- Department of Emergency, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhiqiang Ye
- Department of Emergency, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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29
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Rojas A, Lindner C, Gonzàlez I, Morales MA. Advanced-glycation end-products axis: A contributor to the risk of severe illness from COVID-19 in diabetes patients. World J Diabetes 2021; 12:590-602. [PMID: 33995847 PMCID: PMC8107984 DOI: 10.4239/wjd.v12.i5.590] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/29/2021] [Accepted: 04/07/2021] [Indexed: 02/06/2023] Open
Abstract
Compelling pieces of evidence derived from both clinical and experimental research has demonstrated the crucial role of the receptor for advanced-glycation end-products (RAGE) in orchestrating a plethora of proinflammatory cellular responses leading to many of the complications and end-organ damages reported in patients with diabetes mellitus (DM). During the coronavirus disease 2019 (COVID-19) pandemic, many clinical reports have pointed out that DM increases the risk of COVID-19 complications, hospitalization requirements, as well as the overall severe acute respiratory syndrome coronavirus 2 case-fatality rate. In the present review, we intend to focus on how the basal activation state of the RAGE axis in common preexisting conditions in DM patients such as endothelial dysfunction and hyperglycemia-related prothrombotic phenotype, as well as the contribution of RAGE signaling in lung inflammation, may then lead to the increased mortality risk of COVID-19 in these patients. Additionally, the cross-talk between the RAGE axis with either another severe acute respiratory syndrome coronavirus 2 receptor molecule different of angiotensin-converting enzyme 2 or the renin-angiotensin system imbalance produced by viral infection, as well as the role of this multi-ligand receptor on the obesity-associated low-grade inflammation in the higher risk for severe illness reported in diabetes patients with COVID-19, are also discussed.
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Affiliation(s)
- Armando Rojas
- Biomedical Research Labs, Medicine Faculty, Catholic University of Maule, Talca 3460000, Chile
| | - Cristian Lindner
- Medicine Faculty, Catholic University of Maule, Talca 3460000, Chile
| | - Ileana Gonzàlez
- Biomedical Research Labs, Medicine Faculty, Catholic University of Maule, Talca 3460000, Chile
| | - Miguel Angel Morales
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, University of Chile, Santiago 8320000, Chile
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30
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Monjezi M, Jamaati H, Noorbakhsh F. Attenuation of ventilator-induced lung injury through suppressing the pro-inflammatory signaling pathways: A review on preclinical studies. Mol Immunol 2021; 135:127-136. [PMID: 33895577 DOI: 10.1016/j.molimm.2021.04.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 03/28/2021] [Accepted: 04/06/2021] [Indexed: 10/21/2022]
Abstract
Mechanical ventilation (MV) is a relatively common medical intervention in ICU patients. The main side effect of MV is the so-called "ventilator-induced lung injury" (VILI). The pathogenesis of VILI is not completely understood; however, it has been reported that MV might be associated with up-regulation of various inflammatory mediators within the lung tissue and that these mediators might act as pathogenic factors in lung tissue injury. One potential mechanism for the generation of inflammatory mediators is through the release of endogenous molecules known as damage associated molecular patterns (DAMPs). These molecules are released from injured tissues and can bind to pattern recognition receptors (PRRs). PRR activation generally leads to the production and release of inflammation-related molecules including innate immune cytokines and chemokines. It has been suggested that blocking DAMP/PRR signaling pathways might diminish the progression of VILI. Herein, we review the latest findings with regard to the effects of DAMP/PRRs and their blockade, as well as the potential therapeutic targets and future research directions in VILI. Results of studies performed on human samples, animal models of disease, as well as relevant in vitro systems will be discussed.
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Affiliation(s)
- Mojdeh Monjezi
- Chronic Respiratory Diseases Research Center (CRDRC), National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamidreza Jamaati
- Chronic Respiratory Diseases Research Center (CRDRC), National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Farshid Noorbakhsh
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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31
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Lim A, Radujkovic A, Weigand MA, Merle U. Soluble receptor for advanced glycation end products (sRAGE) as a biomarker of COVID-19 disease severity and indicator of the need for mechanical ventilation, ARDS and mortality. Ann Intensive Care 2021; 11:50. [PMID: 33751264 PMCID: PMC7983090 DOI: 10.1186/s13613-021-00836-2] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 03/08/2021] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND COVID-19 pneumonia and subsequent respiratory failure is causing an immense strain on intensive care units globally. Early prediction of severe disease enables clinicians to avoid acute respiratory distress syndrome (ARDS) development and improve management of critically ill patients. The soluble receptor of advanced glycation endproducts (sRAGE) is a biomarker shown to predict ARDS. Although sRAGE level varies depending on the type of disease, there is limited information available on changes in sRAGE levels in COVID-19. Therefore, sRAGE was measured in COVID-19 patients to determine sRAGE level variation in COVID-19 severity and to examine its ability to predict the need for mechanical ventilation (MV) and mortality in COVID-19. METHODS In this single-centre observational cohort study in Germany, serum sRAGE during acute COVID-19, 20 weeks after the start of COVID-19 symptoms, as well as in control groups of non-COVID-19 pneumonia patients and healthy controls were measured using ELISA. The primary endpoint was severe disease (high-flow nasal oxygen therapy (HFNO)/MV and need of organ support). The secondary endpoints were respiratory failure with need of MV and 30-day mortality. The area under the curve (AUC), cut-off based on Youden's index and odds ratio with 95% CI for sRAGE were calculated with regard to prediction of MV need and mortality. RESULTS Serum sRAGE in 164 COVID-19 patients, 101 matched COVID-19 convalescent patients, 23 non-COVID-19 pneumonia patients and 15 healthy volunteers were measured. sRAGE level increased with COVID-19 severity, need for oxygen therapy, HFNO/MV, ARDS severity, need of dialysis and catecholamine support, 30-day mortality, sequential organ failure assessment (SOFA) and quick SOFA (qSOFA) score. sRAGE was found to be a good predictor of MV need in COVID-19 inpatients and mortality with an AUC of 0.871 (0.770-0.973) and 0.903 (0.817-0.990), respectively. When adjusted for male gender, age, comorbidity and SOFA score ≥ 3, sRAGE was independently associated with risk of need for HFNO/MV. When adjusted for SOFA score ≥ 3, sRAGE was independently associated with risk of need for MV. CONCLUSIONS Serum sRAGE concentrations are elevated in COVID-19 patients as disease severity increases. sRAGE should be considered as a biomarker for predicting the need for MV and mortality in COVID-19.
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Affiliation(s)
- Adeline Lim
- Department of Internal Medicine IV, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany.
| | - Aleksandar Radujkovic
- Department of Internal Medicine V, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - Markus A Weigand
- Department of Anesthesiology, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - Uta Merle
- Department of Internal Medicine IV, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
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32
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Peukert K, Seeliger B, Fox M, Feuerborn C, Sauer A, Schuss P, Schneider M, David S, Welte T, Putensen C, Wilhelm C, Steinhagen F, Bode C. SP-D Serum Levels Reveal Distinct Epithelial Damage in Direct Human ARDS. J Clin Med 2021; 10:737. [PMID: 33673270 PMCID: PMC7917979 DOI: 10.3390/jcm10040737] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 02/06/2021] [Accepted: 02/07/2021] [Indexed: 12/12/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a heterogeneous syndrome with multiple underlying diseases. Particularly epithelial damage results from direct (e.g., pneumonia) rather than indirect lung injury (e.g., nonpulmonary sepsis), which is more likely associated with endothelial damage. Hence, targeting ARDS patients based on their molecular phenotypes is a promising approach to improve outcome. With regard to distinct inflammatory responses and subsequent lung damage in direct ARDS due to the causing pathogen, we quantified markers of epithelial and endothelial damage and pro-inflammatory cytokines in patients with ARDS triggered by bacterial, viral, and atypical pathogen pneumonia or indirect ARDS. The serum levels of interleukin-6 (IL-6) and interleukin-8 (IL-8), lung epithelial injury markers surfactant protein D (SP-D), and soluble receptor for advanced glycation end-products (sRAGE) as well as endothelial injury marker angiopoietin-2 (Ang-2) from 49 patients with distinct types of ARDS were analyzed by multiplex immunoassay. Epithelial damage marker SP-D was significantly higher in direct ARDS caused by viral and atypical pathogens in contrast to ARDS caused by typical bacterial pneumonia and nonpulmonary sepsis. In contrast, sRAGE levels did not differ due to the causing pathogen. Patients with atypical pathogen pneumonia related ARDS showed significantly lower Ang-2 levels compared to patients with viral and indirect ARDS. Patients with viral and atypical pneumonia related ARDS possessed significantly lower serum IL-6 levels compared to bacterial pneumonia related ARDS and IL-6 levels in atypical pneumonia related ARDS were significantly lower than in indirect ARDS. Current findings report a potential difference in ARDS biomarkers due to the underlying disease and pathogen.
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Affiliation(s)
- Konrad Peukert
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany; (K.P.); (M.F.); (C.F.); (A.S.); (C.P.); (F.S.)
| | - Benjamin Seeliger
- Department of Respiratory Medicine and German Centre of Lung Research (DZL), Hannover Medical School, Carl-Neuberg-Str. 1, 30635 Hannover, Germany; (B.S.); (T.W.)
| | - Mario Fox
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany; (K.P.); (M.F.); (C.F.); (A.S.); (C.P.); (F.S.)
| | - Caroline Feuerborn
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany; (K.P.); (M.F.); (C.F.); (A.S.); (C.P.); (F.S.)
| | - Andrea Sauer
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany; (K.P.); (M.F.); (C.F.); (A.S.); (C.P.); (F.S.)
| | - Patrick Schuss
- Department of Neurosurgery, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany; (P.S.); (M.S.)
| | - Matthias Schneider
- Department of Neurosurgery, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany; (P.S.); (M.S.)
| | - Sascha David
- Institute for Intensive Care Medicine, University Hospital Zurich, Raemisstr, 100, 8091 Zurich, Switzerland;
- Department of Nephrology and Hypertension, Hannover Medical School, Carl-Neuberg-str. 1, 30635 Hannover, Germany
| | - Tobias Welte
- Department of Respiratory Medicine and German Centre of Lung Research (DZL), Hannover Medical School, Carl-Neuberg-Str. 1, 30635 Hannover, Germany; (B.S.); (T.W.)
| | - Christian Putensen
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany; (K.P.); (M.F.); (C.F.); (A.S.); (C.P.); (F.S.)
| | - Christoph Wilhelm
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany;
| | - Folkert Steinhagen
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany; (K.P.); (M.F.); (C.F.); (A.S.); (C.P.); (F.S.)
| | - Christian Bode
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany; (K.P.); (M.F.); (C.F.); (A.S.); (C.P.); (F.S.)
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Zhang H, Mao YF, Zhao Y, Xu DF, Wang Y, Xu CF, Dong WW, Zhu XY, Ding N, Jiang L, Liu YJ. Upregulation of Matrix Metalloproteinase-9 Protects against Sepsis-Induced Acute Lung Injury via Promoting the Release of Soluble Receptor for Advanced Glycation End Products. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:8889313. [PMID: 33628393 PMCID: PMC7889353 DOI: 10.1155/2021/8889313] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 12/21/2020] [Accepted: 01/17/2021] [Indexed: 02/06/2023]
Abstract
Dysregulation of matrix metalloproteinase- (MMP-) 9 is implicated in the pathogenesis of acute lung injury (ALI). However, it remains controversial whether MMP-9 improves or deteriorates acute lung injury of different etiologies. The receptor for advanced glycation end products (RAGE) plays a critical role in the pathogenesis of acute lung injury. MMPs are known to mediate RAGE shedding and release of soluble RAGE (sRAGE), which can act as a decoy receptor by competitively inhibiting the binding of RAGE ligands to RAGE. Therefore, this study is aimed at clarifying whether and how pulmonary knockdown of MMP-9 affected sepsis-induced acute lung injury as well as the release of sRAGE in a murine cecal ligation and puncture (CLP) model. The analysis of GEO mouse sepsis datasets GSE15379, GSE52474, and GSE60088 revealed that the mRNA expression of MMP-9 was significantly upregulated in septic mouse lung tissues. Elevation of pulmonary MMP-9 mRNA and protein expressions was confirmed in CLP-induced mouse sepsis model. Intratracheal injection of MMP-9 siRNA resulted in an approximately 60% decrease in pulmonary MMP-9 expression. It was found that pulmonary knockdown of MMP-9 significantly increased mortality of sepsis and exacerbated sepsis-associated acute lung injury. Pulmonary MMP-9 knockdown also decreased sRAGE release and enhanced sepsis-induced activation of the RAGE/nuclear factor-κB (NF-κB) signaling pathway, meanwhile aggravating sepsis-induced oxidative stress and inflammation in lung tissues. In addition, administration of recombinant sRAGE protein suppressed the activation of the RAGE/NF-κB signaling pathway and ameliorated pulmonary oxidative stress, inflammation, and lung injury in CLP-induced septic mice. In conclusion, our data indicate that MMP-9-mediated RAGE shedding limits the severity of sepsis-associated pulmonary edema, inflammation, oxidative stress, and lung injury by suppressing the RAGE/NF-κB signaling pathway via the decoy receptor activities of sRAGE. MMP-9-mediated sRAGE production may serve as a self-limiting mechanism to control and resolve excessive inflammation and oxidative stress in the lung during sepsis.
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Affiliation(s)
- Hui Zhang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Yan-Fei Mao
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Ying Zhao
- School of Kinesiology, The Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai 200438, China
| | - Dun-Feng Xu
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Yan Wang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Chu-Fan Xu
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Wen-Wen Dong
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Xiao-Yan Zhu
- Department of Physiology, Navy Medical University, Shanghai 200433, China
| | - Ning Ding
- Department of Anesthesiology, Shandong Provincial Third Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250031, China
| | - Lai Jiang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - Yu-Jian Liu
- School of Kinesiology, The Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai 200438, China
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34
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Lin WC, Fessler MB. Regulatory mechanisms of neutrophil migration from the circulation to the airspace. Cell Mol Life Sci 2021; 78:4095-4124. [PMID: 33544156 PMCID: PMC7863617 DOI: 10.1007/s00018-021-03768-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/22/2020] [Accepted: 01/16/2021] [Indexed: 02/07/2023]
Abstract
The neutrophil, a short-lived effector leukocyte of the innate immune system best known for its proteases and other degradative cargo, has unique, reciprocal physiological interactions with the lung. During health, large numbers of ‘marginated’ neutrophils reside within the pulmonary vasculature, where they patrol the endothelial surface for pathogens and complete their life cycle. Upon respiratory infection, rapid and sustained recruitment of neutrophils through the endothelial barrier, across the extravascular pulmonary interstitium, and again through the respiratory epithelium into the airspace lumen, is required for pathogen killing. Overexuberant neutrophil trafficking to the lung, however, causes bystander tissue injury and underlies several acute and chronic lung diseases. Due in part to the unique architecture of the lung’s capillary network, the neutrophil follows a microanatomic passage into the distal airspace unlike that observed in other end-organs that it infiltrates. Several of the regulatory mechanisms underlying the stepwise recruitment of circulating neutrophils to the infected lung have been defined over the past few decades; however, fundamental questions remain. In this article, we provide an updated review and perspective on emerging roles for the neutrophil in lung biology, on the molecular mechanisms that control the trafficking of neutrophils to the lung, and on past and ongoing efforts to design therapeutics to intervene upon pulmonary neutrophilia in lung disease.
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Affiliation(s)
- Wan-Chi Lin
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, NIH, 111 T.W. Alexander Drive, P.O. Box 12233, MD D2-01, Research Triangle Park, NC, 27709, USA
| | - Michael B Fessler
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, NIH, 111 T.W. Alexander Drive, P.O. Box 12233, MD D2-01, Research Triangle Park, NC, 27709, USA.
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Li J, Wang K, Huang B, Li R, Wang X, Zhang H, Tang H, Chen X. The receptor for advanced glycation end products mediates dysfunction of airway epithelial barrier in a lipopolysaccharides-induced murine acute lung injury model. Int Immunopharmacol 2021; 93:107419. [PMID: 33548580 DOI: 10.1016/j.intimp.2021.107419] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 01/10/2021] [Accepted: 01/18/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND Airway epithelial cells (AECs) act as the first barrier protecting against invasion of environment agents and maintain integrity of lung structure and function. Dysfunction of airway epithelial barrier has been shown to be involved in ALI/ARDS pathogenesis. Yet, the exact mechanism is still obscure. Our study evaluated whether the receptor for advanced glycation end products (RAGE) mediates impaired airway epithelial barrier in LPS-induced murine ALI model. METHODS Male BALB/c mice were subjected to intratracheal instillation of LPS to generate an ALI model. Inhibitors of RAGE, FPS-ZM1 and Azeliragon were respectively given to the mice through intraperitoneal injection. Bronchoalveolar lavage fluid (BALF) and lung tissues were collected for further analysis. RESULTS LPS exposure led to markedly increased expression of RAGE and its ligands HMGB1, HSP70, S100b. Treatment of FPS-ZM1 or Azeliragon not only effectively descended the expression of RAGE and its ligands but also attenuated LPS-induced neutrophil-predominant airway inflammation and injury, decreased levels of IL-6, IL-1β and TNF-α in BALF, alleviated increased alveolar-capillary permeability and pulmonary edema. LPS stimulation significantly impaired the integrity of airway epithelium, paralleled with dislocation of adheren junction (AJ) protein E-cadherin at cell-cell contacts and down-expression of both AJ and tight junction (TJ) proteins Claudin-2 and occludin, all of which were dramatically rescued by RAGE inhibition. CONCLUSION RAGE signaling mediates airway epithelial barrier dysfunction in a LPS-induced ALI murine model.
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Affiliation(s)
- Jiahui Li
- Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - Kai Wang
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - Bo Huang
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - Rui Li
- Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - Xilong Wang
- Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - Hailing Zhang
- Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - Haixiong Tang
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China.
| | - Xin Chen
- Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China.
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Abstract
PURPOSE OF REVIEW This article provides an overview of protein biomarkers for acute respiratory distress syndrome (ARDS) and their potential use in future clinical trials. RECENT FINDINGS The protein biomarkers studied as indices of biological processes involved in the pathogenesis of ARDS may have diagnostic and/or prognostic value. Recently, they also proved useful for identifying ARDS phenotypes and assessing heterogeneity of treatment effect in retrospective analyses of completed clinical trials. SUMMARY This article summarizes the current research on ARDS biomarkers and provides insights into how they should be integrated as prognostic and predictive enrichment tools in future clinical trials.
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Affiliation(s)
- Matthieu Jabaudon
- Department of Perioperative Medicine, CHU Clermont-Ferrand
- GReD, CNRS, INSERM, Université Clermont Auvergne, Clermont-Ferrand, France
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine
| | - Raiko Blondonnet
- Department of Perioperative Medicine, CHU Clermont-Ferrand
- GReD, CNRS, INSERM, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Lorraine B Ware
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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37
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Engineering exosomes for pulmonary delivery of peptides and drugs to inflammatory lung cells by inhalation. J Control Release 2021; 330:684-695. [DOI: 10.1016/j.jconrel.2020.12.053] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 12/24/2020] [Accepted: 12/28/2020] [Indexed: 12/12/2022]
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38
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Roy D, Ramasamy R, Schmidt AM. Journey to a Receptor for Advanced Glycation End Products Connection in Severe Acute Respiratory Syndrome Coronavirus 2 Infection: With Stops Along the Way in the Lung, Heart, Blood Vessels, and Adipose Tissue. Arterioscler Thromb Vasc Biol 2021; 41:614-627. [PMID: 33327744 PMCID: PMC7837689 DOI: 10.1161/atvbaha.120.315527] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 11/30/2020] [Indexed: 01/08/2023]
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has affected millions of people worldwide and the pandemic has yet to wane. Despite its associated significant morbidity and mortality, there are no definitive cures and no fully preventative measures to combat SARS-CoV-2. Hence, the urgency to identify the pathobiological mechanisms underlying increased risk for and the severity of SARS-CoV-2 infection is mounting. One contributing factor, the accumulation of damage-associated molecular pattern molecules, is a leading trigger for the activation of nuclear factor-kB and the IRF (interferon regulatory factors), such as IRF7. Activation of these pathways, particularly in the lung and other organs, such as the heart, contributes to a burst of cytokine release, which predisposes to significant tissue damage, loss of function, and mortality. The receptor for advanced glycation end products (RAGE) binds damage-associated molecular patterns is expressed in the lung and heart, and in priming organs, such as the blood vessels (in diabetes) and adipose tissue (in obesity), and transduces the pathological signals emitted by damage-associated molecular patterns. It is proposed that damage-associated molecular pattern-RAGE enrichment in these priming tissues, and in the lungs and heart during active infection, contributes to the widespread tissue damage induced by SARS-CoV-2. Accordingly, the RAGE axis might play seminal roles in and be a target for therapeutic intervention in SARS-CoV-2 infection.
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Affiliation(s)
- Divya Roy
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, NYU Grossman School of Medicine (D.R., R.R., A.M.S.)
- New York Institute of Technology College of Osteopathic Medicine, Glen Head (D.R.)
| | - Ravichandran Ramasamy
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, NYU Grossman School of Medicine (D.R., R.R., A.M.S.)
| | - Ann Marie Schmidt
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, NYU Grossman School of Medicine (D.R., R.R., A.M.S.)
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Yalcin Kehribar D, Cihangiroglu M, Sehmen E, Avci B, Capraz A, Yildirim Bilgin A, Gunaydin C, Ozgen M. The receptor for advanced glycation end product (RAGE) pathway in COVID-19. Biomarkers 2021; 26:114-118. [PMID: 33284049 PMCID: PMC7814566 DOI: 10.1080/1354750x.2020.1861099] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Coronavirus disease-2019 (COVID-19) with lung involvement frequently causes morbidity and mortality. Advanced age appears to be the most important risk factor. The receptor for advanced glycation end-product (RAGE) pathway is considered to play important roles in the physiological aging and pathogenesis of lung diseases. This study aimed to investigate the possible relationship between COVID-19 and RAGE pathway. MATERIALS AND METHODS This study included 23 asymptomatic patients and 35 patients with lung involvement who were diagnosed with COVID-19 as well as 22 healthy volunteers. Lung involvement was determined using computed tomography. Serum soluble-RAGE (sRAGE) levels were determined using enzyme-linked immunosorbent assay. RESULTS The sRAGE levels were significantly higher in the asymptomatic group than in the control group. Age, fibrinogen, C-reactive protein, and ferritin levels were higher and the sRAGE level was lower in the patients with lung involvement than in the asymptomatic patients. CONCLUSIONS In this study, patients with high sRAGE levels were younger and had asymptomatic COVID-19. Patients with low sRAGE levels were elderly patients with lung involvement, which indicates that the RAGE pathway plays an important role in the aggravation of COVID-19.
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Affiliation(s)
- Demet Yalcin Kehribar
- Ondokuz Mayis University, Faculty of Medicine, Department of Internal Medicine, Samsun, Turkey
| | - Mustafa Cihangiroglu
- Amasya University, Faculty of Medicine, Department of Infection Disease, Amasya, Turkey
| | - Emine Sehmen
- Samsun Education and Reseach Hospital, Department of Infection Disease, Samsun, Turkey
| | - Bahattin Avci
- Department of Biochemistry, Faculty of Medicine, Ondokuz Mayis University, Kurupelit, Turkey
| | - Aylin Capraz
- Amasya University, Faculty of Medicine, Department of Infection Disease, Amasya, Turkey
| | - Ayse Yildirim Bilgin
- Amasya University, Faculty of Medicine, Department of Infection Disease, Amasya, Turkey
| | - Caner Gunaydin
- Faculty of Medicine Ringgold Standard Institution, Ondokuz Mayis University, Samsun, Turkey
| | - Metin Ozgen
- Faculty of Medicine Ringgold Standard Institution, Ondokuz Mayis University, Samsun, Turkey
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40
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Stilhano RS, Costa AJ, Nishino MS, Shams S, Bartolomeo CS, Breithaupt-Faloppa AC, Silva EA, Ramirez AL, Prado CM, Ureshino RP. SARS-CoV-2 and the possible connection to ERs, ACE2, and RAGE: Focus on susceptibility factors. FASEB J 2020; 34:14103-14119. [PMID: 32965736 PMCID: PMC7537138 DOI: 10.1096/fj.202001394rr] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/15/2020] [Accepted: 08/25/2020] [Indexed: 12/11/2022]
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has provoked major stresses on the health-care systems of several countries, and caused the death of more than a quarter of a million people globally, mainly in the elderly population with preexisting pathologies. Previous studies with coronavirus (SARS-CoV) point to gender differences in infection and disease progression with increased susceptibility in male patients, indicating that estrogens may be associated with physiological protection against the coronavirus. Therefore, the objectives of this work are threefold. First, we aim to summarize the SARS-CoV-2 infection pathway and the roles both the virus and patient play in COVID-19 (Coronavirus disease 2019) progression, clinical symptomatology, and mortality. Second, we detail the effect estrogen has on viral infection and host infection response, including its role in both the regulation of key viral receptor expression and the mediation of inflammatory activity. Finally, we describe how ERs (estrogen receptors) and RAGE (receptor for advanced glycation end-products) play a critical role in metabolic pathways, which we envisage could maintain a close interplay with SARS-CoV and COVID-19 mortality rates, despite a current lack of research directly determining how. Taken together, we present the current state of the field regarding SARS-CoV-2 research and illuminate where research is needed to better define the role both estrogen and metabolic comorbidities have in the COVID-19 disease state, which can be key in screening potential therapeutic options as the search for effective treatments continue.
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Affiliation(s)
- Roberta Sessa Stilhano
- Department of Physiological Sciences, Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, Brazil
| | - Angelica Jardim Costa
- Department of Pharmacology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Michelle Sayuri Nishino
- Department of Biological Sciences, Universidade Federal de São Paulo, Diadema, Brazil.,Laboratory of Molecular and Translational Endocrinology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Shahin Shams
- Department of Biomedical Engineering, University of California, Davis, CA, USA
| | - Cynthia Silva Bartolomeo
- Department of Physiological Sciences, Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, Brazil.,Department of Biosciences, Universidade Federal de São Paulo, Santos, Brazil
| | - Ana Cristina Breithaupt-Faloppa
- Laboratorio de Cirurgia Cardiovascular e Fisiopatologia da Circulação (LIM-11), Instituto do Coração (InCor), Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | | | | | - Carla Maximo Prado
- Department of Biosciences, Universidade Federal de São Paulo, Santos, Brazil
| | - Rodrigo Portes Ureshino
- Department of Biological Sciences, Universidade Federal de São Paulo, Diadema, Brazil.,Laboratory of Molecular and Translational Endocrinology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
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41
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Horie S, McNicholas B, Rezoagli E, Pham T, Curley G, McAuley D, O'Kane C, Nichol A, Dos Santos C, Rocco PRM, Bellani G, Laffey JG. Emerging pharmacological therapies for ARDS: COVID-19 and beyond. Intensive Care Med 2020; 46:2265-2283. [PMID: 32654006 PMCID: PMC7352097 DOI: 10.1007/s00134-020-06141-z] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 05/26/2020] [Indexed: 02/06/2023]
Abstract
ARDS, first described in 1967, is the commonest form of acute severe hypoxemic respiratory failure. Despite considerable advances in our knowledge regarding the pathophysiology of ARDS, insights into the biologic mechanisms of lung injury and repair, and advances in supportive care, particularly ventilatory management, there remains no effective pharmacological therapy for this syndrome. Hospital mortality at 40% remains unacceptably high underlining the need to continue to develop and test therapies for this devastating clinical condition. The purpose of the review is to critically appraise the current status of promising emerging pharmacological therapies for patients with ARDS and potential impact of these and other emerging therapies for COVID-19-induced ARDS. We focus on drugs that: (1) modulate the immune response, both via pleiotropic mechanisms and via specific pathway blockade effects, (2) modify epithelial and channel function, (3) target endothelial and vascular dysfunction, (4) have anticoagulant effects, and (5) enhance ARDS resolution. We also critically assess drugs that demonstrate potential in emerging reports from clinical studies in patients with COVID-19-induced ARDS. Several therapies show promise in earlier and later phase clinical testing, while a growing pipeline of therapies is in preclinical testing. The history of unsuccessful clinical trials of promising therapies underlines the challenges to successful translation. Given this, attention has been focused on the potential to identify biologically homogenous subtypes within ARDS, to enable us to target more specific therapies ‘precision medicines.’ It is hoped that the substantial number of studies globally investigating potential therapies for COVID-19 will lead to the rapid identification of effective therapies to reduce the mortality and morbidity of this devastating form of ARDS.
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Affiliation(s)
- Shahd Horie
- Lung Biology Group, Regenerative Medicine Institute (REMEDI) at CÚRAM Centre for Research in Medical Devices, Biomedical Sciences Building, National University of Ireland, Galway, Ireland
| | - Bairbre McNicholas
- Department of Anaesthesia and Intensive Care Medicine, Galway University Hospitals, Galway, Ireland
| | - Emanuele Rezoagli
- Lung Biology Group, Regenerative Medicine Institute (REMEDI) at CÚRAM Centre for Research in Medical Devices, Biomedical Sciences Building, National University of Ireland, Galway, Ireland.,Department of Medicine and Surgery, University of Milano - Bicocca, Monza, Italy.,Department of Emergency and Intensive Care, San Gerardo Hospital, Monza, Italy
| | - Tài Pham
- Service de médecine Intensive-Réanimation, AP-HP, Hôpital de Bicêtre, Hôpitaux Universitaires Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Ger Curley
- Department of Anaesthesiology, Beaumont Hospital, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Danny McAuley
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, Northern Ireland, UK.,Department of Intensive Care Medicine, Royal Victoria Hospital, Belfast, Northern Ireland, UK
| | - Cecilia O'Kane
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Alistair Nichol
- Clinical Research Centre at St Vincent's University Hospital, University College Dublin, Dublin, Ireland.,Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, Australia.,Intensive Care Unit, Alfred Hospital, Melbourne, Australia
| | - Claudia Dos Santos
- Keenan Research Centre and Interdepartmental Division of Critical Care, University of Toronto, Toronto, ON, Canada
| | - Patricia R M Rocco
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Giacomo Bellani
- Department of Medicine and Surgery, University of Milano - Bicocca, Monza, Italy.,Department of Emergency and Intensive Care, San Gerardo Hospital, Monza, Italy
| | - John G Laffey
- Lung Biology Group, Regenerative Medicine Institute (REMEDI) at CÚRAM Centre for Research in Medical Devices, Biomedical Sciences Building, National University of Ireland, Galway, Ireland. .,Department of Anaesthesia and Intensive Care Medicine, Galway University Hospitals, Galway, Ireland.
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42
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Niu H, Niu W, Yu T, Dong F, Huang K, Duan R, Qumu S, Lu M, Li Y, Yang T, Wang C. Association of RAGE gene multiple variants with the risk for COPD and asthma in northern Han Chinese. Aging (Albany NY) 2020; 11:3220-3237. [PMID: 31141790 PMCID: PMC6555453 DOI: 10.18632/aging.101975] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 05/12/2019] [Indexed: 12/17/2022]
Abstract
Clinical and experimental data have shown that the receptor for advanced glycation end products (RAGE) is implicated in the pathogenesis of respiratory disorders. In this study, we genotyped five widely-evaluated variants in RAGE gene, aiming to assess their association with the risk for chronic obstructive pulmonary disease (COPD) and asthma in northern Han Chinese. Genotypes were determined in 105 COPD patients, 242 asthma patients and 527 controls. In single-locus analysis, there was significant difference in the genotype distributions of rs1800624 between COPD patients and controls (p=0.022), and the genotype and allele distributions of rs1800625 differed significantly (p=0.040 and 0.016) between asthma patients and controls. Haplotype analysis revealed that haplotype T-A-G-T (allele order: rs1800625, rs1800624, rs2070600, rs184003) was significantly associated with a reduced COPD risk (OR=0.32, 95% CI: 0.06-0.60), and haplotype T-A-A-G was significantly associated with a reduced asthma risk (OR=0.19, 95% CI: 0.04-0.96). Further haplotype-phenotype analysis showed that high- and low-density lipoprotein cholesterol and blood urea nitrogen were significant mediators for COPD (psim=0.041, 0.043 and 0.030, respectively), and total cholesterol was a significant mediator for asthma (psim=0.009). Taken together, our findings indicate that RAGE gene is a promising candidate for COPD and asthma, and importantly both disorders are genetically heterogeneous.
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Affiliation(s)
- Hongtao Niu
- Peking University China-Japan Friendship School of Clinical Medicine, Beijing 100029, China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing 100029, China.,National Clinical Research Center for Respiratory Diseases, Beijing 100029, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - Wenquan Niu
- Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing 100029, China.,National Clinical Research Center for Respiratory Diseases, Beijing 100029, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - Tao Yu
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing 100029, China.,Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing 100029, China.,National Clinical Research Center for Respiratory Diseases, Beijing 100029, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - Feng Dong
- Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing 100029, China.,National Clinical Research Center for Respiratory Diseases, Beijing 100029, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - Ke Huang
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing 100029, China.,National Clinical Research Center for Respiratory Diseases, Beijing 100029, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - Ruirui Duan
- Peking University China-Japan Friendship School of Clinical Medicine, Beijing 100029, China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing 100029, China.,National Clinical Research Center for Respiratory Diseases, Beijing 100029, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - Shiwei Qumu
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing 100029, China.,National Clinical Research Center for Respiratory Diseases, Beijing 100029, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - Minya Lu
- Peking University China-Japan Friendship School of Clinical Medicine, Beijing 100029, China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing 100029, China.,National Clinical Research Center for Respiratory Diseases, Beijing 100029, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - Yong Li
- National Clinical Research Center for Respiratory Diseases, Beijing 100029, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China.,Clinical Diagnosis Department of Respiratory Diseases Center, China-Japan Friendship Hospital, Beijing 100029, China
| | - Ting Yang
- Peking University China-Japan Friendship School of Clinical Medicine, Beijing 100029, China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing 100029, China.,Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing 100029, China.,National Clinical Research Center for Respiratory Diseases, Beijing 100029, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China.,Clinical Diagnosis Department of Respiratory Diseases Center, China-Japan Friendship Hospital, Beijing 100029, China
| | - Chen Wang
- Peking University China-Japan Friendship School of Clinical Medicine, Beijing 100029, China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing 100029, China.,National Clinical Research Center for Respiratory Diseases, Beijing 100029, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
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43
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Metwaly SM, Winston BW. Systems Biology ARDS Research with a Focus on Metabolomics. Metabolites 2020; 10:metabo10050207. [PMID: 32438561 PMCID: PMC7281154 DOI: 10.3390/metabo10050207] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/09/2020] [Accepted: 05/15/2020] [Indexed: 12/19/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a clinical syndrome that inflicts a considerably heavy toll in terms of morbidity and mortality. While there are multitudes of conditions that can lead to ARDS, the vast majority of ARDS cases are caused by a relatively small number of diseases, especially sepsis and pneumonia. Currently, there is no clinically agreed upon reliable diagnostic test for ARDS, and the detection or diagnosis of ARDS is based on a constellation of laboratory and radiological tests in the absence of evidence of left ventricular dysfunction, as specified by the Berlin definition of ARDS. Virtually all the ARDS biomarkers to date have been proven to be of very limited clinical utility. Given the heterogeneity of ARDS due to the wide variation in etiology, clinical and molecular manifestations, there is a current scientific consensus agreement that ARDS is not just a single entity but rather a spectrum of conditions that need further study for proper classification, the identification of reliable biomarkers and the adequate institution of therapeutic targets. This scoping review aims to elucidate ARDS omics research, focusing on metabolomics and how metabolomics can boost the study of ARDS biomarkers and help to facilitate the identification of ARDS subpopulations.
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Affiliation(s)
- Sayed M. Metwaly
- Department of Critical Care Medicine, Faculty of Medicine, University of Calgary, Calgary, AB T2N 4Z6, Canada;
| | - Brent W. Winston
- Department of Critical Care Medicine, Faculty of Medicine, University of Calgary, Calgary, AB T2N 4Z6, Canada;
- Departments of Medicine and Biochemistry and Molecular Biology, University of Calgary, Calgary, AB T2N 4Z6, Canada
- Correspondence: ; Tel.: +1-(403)-220-4331; Fax: +1-(403)-283-1267
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44
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Zhai R, Blondonnet R, Ebrahimi E, Belville C, Audard J, Gross C, Choltus H, Henrioux F, Constantin JM, Pereira B, Blanchon L, Sapin V, Jabaudon M. The receptor for advanced glycation end-products enhances lung epithelial wound repair: An in vitro study. Exp Cell Res 2020; 391:112030. [PMID: 32330509 DOI: 10.1016/j.yexcr.2020.112030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/17/2020] [Accepted: 04/19/2020] [Indexed: 12/22/2022]
Abstract
Re-epithelialization of the alveolar surface is a key process of lung alveolar epithelial barrier repair after acute lung injury. The receptor for advanced glycation end-products (RAGE) pathway plays key roles in lung homeostasis, and its involvement in wound repair has been already reported in human bronchial epithelial cells. However, its effects on lung alveolar epithelial repair after injury remain unknown. We investigated whether RAGE stimulation with its ligands high-mobility group box 1 protein (HMGB1) or advanced glycation end-products (AGEs), alone or associated with RAGE inhibition using RAGE antagonist peptide, affects in vitro wound healing in human alveolar epithelial A549 cells. We further asked whether these effects could be associated with changes in cell proliferation and migration. We found that treatment of A549 cells with HMGB1 or AGEs promotes RAGE-dependent wound healing after a scratch assay. In addition, both RAGE ligands increased cell proliferation in a RAGE-dependent manner. Treatment with HMGB1 increased migration of alveolar epithelial cells at 12 h, independently of RAGE, whereas AGEs stimulated migration as measured 48 h after injury in a RAGE-dependent manner. Taken together, these results suggest that RAGE pathway is involved in lung alveolar epithelial wound repair, possibly through enhanced cell migration and proliferation.
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Affiliation(s)
- Ruoyang Zhai
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France
| | - Raiko Blondonnet
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France; Department of Perioperative Medicine, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Ebrahim Ebrahimi
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France; Department of Perioperative Medicine, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Corinne Belville
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France
| | - Jules Audard
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France; Department of Perioperative Medicine, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Christelle Gross
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France
| | - Helena Choltus
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France
| | - Fanny Henrioux
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France
| | - Jean-Michel Constantin
- Sorbonne University, GRC 29, AP-HP, DMU DREAM, Department of Anesthesiology and Critical Care, Pitié-Salpêtrière Hospital, Paris, France
| | - Bruno Pereira
- Biostatistics Unit, Department of Clinical Research and Innovation (DRCI), CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Loic Blanchon
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France
| | - Vincent Sapin
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France; Department of Medical Biochemistry and Molecular Genetics, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Matthieu Jabaudon
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France; Department of Perioperative Medicine, CHU Clermont-Ferrand, Clermont-Ferrand, France; Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.
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Acute respiratory distress syndrome subphenotypes and therapy responsive traits among preclinical models: protocol for a systematic review and meta-analysis. Respir Res 2020; 21:81. [PMID: 32264897 PMCID: PMC7137453 DOI: 10.1186/s12931-020-01337-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 03/17/2020] [Indexed: 02/07/2023] Open
Abstract
Background Subphenotypes were recently reported within clinical acute respiratory distress syndrome (ARDS), with distinct outcomes and therapeutic responses. Experimental models have long been used to mimic features of ARDS pathophysiology, but the presence of distinct subphenotypes among preclinical ARDS remains unknown. This review will investigate whether: 1) subphenotypes can be identified among preclinical ARDS models; 2) such subphenotypes can identify some responsive traits. Methods We will include comparative preclinical (in vivo and ex vivo) ARDS studies published between 2009 and 2019 in which pre-specified therapies were assessed (interleukin (IL)-10, IL-2, stem cells, beta-agonists, corticosteroids, fibroblast growth factors, modulators of the receptor for advanced glycation end-products pathway, anticoagulants, and halogenated agents) and outcomes compared to a control condition. The primary outcome will be a composite of the four key features of preclinical ARDS as per the American Thoracic Society consensus conference (histologic evidence of lung injury, altered alveolar-capillary barrier, lung inflammatory response, and physiological dysfunction). Secondary outcomes will include the single components of the primary composite outcome, net alveolar fluid clearance, and death. MEDLINE, Embase, and Cochrane databases will be searched electronically and data from eligible studies will be extracted, pooled, and analyzed using random-effects models. Individual study reporting will be assessed according to the Animal Research: Reporting of In Vivo Experiments guidelines. Meta-regressions will be performed to identify subphenotypes prior to comparing outcomes across subphenotypes and treatment effects. Discussion This study will inform on the presence and underlying pathophysiological features of subphenotypes among preclinical models of ARDS and should help to determine whether sufficient evidence exists to perform preclinical trials of subphenotype-targeted therapies, prior to potential clinical translation. Systematic review registration PROSPERO (ID: CRD42019157236).
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Depression of lncRNA NEAT1 Antagonizes LPS-Evoked Acute Injury and Inflammatory Response in Alveolar Epithelial Cells via HMGB1-RAGE Signaling. Mediators Inflamm 2020; 2020:8019467. [PMID: 32089649 PMCID: PMC7025070 DOI: 10.1155/2020/8019467] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 12/31/2019] [Accepted: 01/16/2020] [Indexed: 12/18/2022] Open
Abstract
Sepsis-evoked acute lung injury (ALI) and its extreme manifestation, acute respiratory distress syndrome (ARDS), constitute a major cause of mortality in intensive care units. High levels of the long noncoding RNA nuclear paraspeckle assembly transcript 1 (NEAT1) have been positively correlated with increased severity and unfavorable prognoses in patients with sepsis. Nevertheless, the function and molecular mechanism of NEAT1 in ALI remain elusive. In the current study, high levels of NEAT1 were confirmed in lipopolysaccharide- (LPS-) induced ALI mice models and in LPS-stimulated cells from the alveolar epithelial A549 cell line. Intriguingly, cessation of NEAT1 led to increased cell viability and decreased lactate dehydrogenase release, apoptosis, and caspase-3/9 activity, which conferred protection against LPS-induced injury in these cells. NEAT1 inhibition also restrained LPS-evoked transcripts and production of inflammatory cytokines IL-6, IL-1β, and TNF-α. A mechanism analysis corroborated the activation of high-mobility group box1 (HMGB1)/receptors for advanced glycation end products (RAGE) and NF-κB signaling in LPS-treated A549 cells. NEAT1 suppression reversed the activation of this pathway. Notably, reactivating HMGB1/RAGE signaling via HMGB1 overexpression blunted the anti-injury and anti-inflammation effects of NEAT1 knockdown. These findings suggest that NEAT1 may aggravate the progression of ALI and ARDS by inducing alveolar epithelial cell injury and inflammation via HMGB1/RAGE signaling, implying a promising treatment target for these conditions.
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47
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Tovar A, Smith GJ, Thomas JM, Crouse WL, Harkema JR, Kelada SNP. Transcriptional Profiling of the Murine Airway Response to Acute Ozone Exposure. Toxicol Sci 2020; 173:114-130. [PMID: 31626304 PMCID: PMC6944221 DOI: 10.1093/toxsci/kfz219] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Ambient ozone (O3) exposure has serious consequences on respiratory health, including airway inflammation and injury. Decades of research have yielded thorough descriptions of these outcomes; however, less is known about the molecular processes that drive them. The aim of this study was to further describe the cellular and molecular responses to O3 exposure in murine airways, with a particular focus on transcriptional responses in 2 critical pulmonary tissue compartments: conducting airways (CA) and airway macrophages (AM). After exposing adult, female C57BL/6J mice to filtered air, 1 or 2 ppm O3, we assessed hallmark responses including airway inflammation (cell counts and cytokine secretion) and injury (epithelial permeability), followed by gene expression profiling of CA and AM by RNA-seq. As expected, we observed concentration-dependent increases in airway inflammation and injury. Conducting airways and AM both exhibited changes in gene expression to both 1 and 2 ppm O3 that were largely compartment-specific. In CA, genes associated with epithelial barrier function, detoxification processes, and cellular proliferation were altered, while O3 affected genes involved in innate immune signaling, cytokine production, and extracellular matrix remodeling in AM. Further, CA and AM also exhibited notable differences in concentration-response expression patterns for large numbers of genes. Overall, our study has described transcriptional responses to acute O3 exposure, revealing both shared and unique gene expression patterns across multiple concentrations of O3 and in 2 important O3-responsive tissues. These profiles provide broad mechanistic insight into pulmonary O3 toxicity, and reveal a variety of targets for focused follow-up studies.
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Affiliation(s)
- Adelaide Tovar
- Department of Genetics
- Curriculum in Genetics & Molecular Biology
| | - Gregory J Smith
- Department of Genetics
- Curriculum in Toxicology & Environmental Medicine
| | | | - Wesley L Crouse
- Department of Genetics
- Curriculum in Bioinformatics & Computational Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Jack R Harkema
- Department of Pathology & Diagnostic Investigation and Institute for Integrated Toxicology, Michigan State University, East Lansing, Michigan 48824
| | - Samir N P Kelada
- Department of Genetics
- Curriculum in Genetics & Molecular Biology
- Curriculum in Toxicology & Environmental Medicine
- Curriculum in Bioinformatics & Computational Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
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48
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Jones TK, Feng R, Kerchberger VE, Reilly JP, Anderson BJ, Shashaty MGS, Wang F, Dunn TG, Riley TR, Abbott J, Ittner CAG, Christiani DC, Mikacenic C, Wurfel MM, Ware LB, Calfee CS, Matthay MA, Christie JD, Meyer NJ. Plasma sRAGE Acts as a Genetically Regulated Causal Intermediate in Sepsis-associated Acute Respiratory Distress Syndrome. Am J Respir Crit Care Med 2020; 201:47-56. [PMID: 31487195 PMCID: PMC6938154 DOI: 10.1164/rccm.201810-2033oc] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 09/05/2019] [Indexed: 12/31/2022] Open
Abstract
Rationale: Acute respiratory distress syndrome (ARDS) lacks known causal biomarkers. Plasma concentrations of sRAGE (soluble receptor for advanced glycation end products) strongly associate with ARDS risk. However, whether plasma sRAGE contributes causally to ARDS remains unknown.Objectives: Evaluate plasma sRAGE as a causal intermediate in ARDS by Mendelian randomization (MR), a statistical method to infer causality using observational data.Methods: We measured early plasma sRAGE in two critically ill populations with sepsis. The cohorts were whole-genome genotyped and phenotyped for ARDS. To select validated genetic instruments for MR, we regressed plasma sRAGE on genome-wide genotypes in both cohorts. The causal effect of plasma sRAGE on ARDS was inferred using the top variants with significant associations in both populations (P < 0.01, R2 > 0.02). We applied the inverse variance-weighted method to obtain consistent estimates of the causal effect of plasma sRAGE on ARDS risk.Measurements and Main Results: There were 393 European and 266 African ancestry patients in the first cohort and 843 European ancestry patients in the second cohort. Plasma sRAGE was strongly associated with ARDS risk in both populations (odds ratio, 1.86; 95% confidence interval [1.54-2.25]; 2.56 [2.14-3.06] per log increase). Using genetic instruments common to both populations, plasma sRAGE had a consistent causal effect on ARDS risk with a β estimate of 0.50 (95% confidence interval [0.09-0.91] per log increase).Conclusions: Plasma sRAGE is genetically regulated during sepsis, and MR analysis indicates that increased plasma sRAGE leads to increased ARDS risk, suggesting plasma sRAGE acts as a causal intermediate in sepsis-related ARDS.
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Affiliation(s)
- Tiffanie K. Jones
- Pulmonary, Allergy, and Critical Care Medicine Division, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Rui Feng
- Department of Biostatistics, Center for Clinical Epidemiology and Biostatistics, Epidemiology, and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania
| | - V. Eric Kerchberger
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - John P. Reilly
- Pulmonary, Allergy, and Critical Care Medicine Division, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Brian J. Anderson
- Pulmonary, Allergy, and Critical Care Medicine Division, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Michael G. S. Shashaty
- Pulmonary, Allergy, and Critical Care Medicine Division, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
- Department of Biostatistics, Center for Clinical Epidemiology and Biostatistics, Epidemiology, and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Fan Wang
- Department of Cardiovascular and Metabolic Sciences, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio
| | - Thomas G. Dunn
- Pulmonary, Allergy, and Critical Care Medicine Division, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Thomas R. Riley
- Pulmonary, Allergy, and Critical Care Medicine Division, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Jason Abbott
- Department of Anesthesia, Cardiovascular Research Institute, and
| | - Caroline A. G. Ittner
- Pulmonary, Allergy, and Critical Care Medicine Division, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - David C. Christiani
- Harvard School of Public Health, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts; and
| | - Carmen Mikacenic
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, Washington
| | - Mark M. Wurfel
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, Washington
| | - Lorraine B. Ware
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Carolyn S. Calfee
- Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, California
| | - Michael A. Matthay
- Department of Anesthesia, Cardiovascular Research Institute, and
- Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, California
| | - Jason D. Christie
- Pulmonary, Allergy, and Critical Care Medicine Division, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
- Department of Biostatistics, Center for Clinical Epidemiology and Biostatistics, Epidemiology, and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Nuala J. Meyer
- Pulmonary, Allergy, and Critical Care Medicine Division, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
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Ultra-Protective Ventilation Reduces Biotrauma in Patients on Venovenous Extracorporeal Membrane Oxygenation for Severe Acute Respiratory Distress Syndrome*. Crit Care Med 2019; 47:1505-1512. [DOI: 10.1097/ccm.0000000000003894] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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50
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Role of Receptor for Advanced Glycation End Products in Regulating Lung Fluid Balance in Lipopolysaccharide-induced Acute Lung Injury and Infection-Related Acute Respiratory Distress Syndrome. Shock 2019; 50:472-482. [PMID: 29040215 DOI: 10.1097/shk.0000000000001032] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Receptor for advanced glycation end products (RAGE) is implicated in inflammatory responses in acute lung injury (ALI)/acute respiratory distress syndrome (ARDS), but its role in pulmonary edema formation remains unclear, especially in infection-related ARDS mainly caused by pneumonia or sepsis. In this study, we investigated the role of RAGE in alveolar fluid regulation by using RAGE gene knockout (RAGE) mice in a murine ALI model induced by lipopolysaccharide (LPS), and by comparing soluble RAGE (sRAGE) levels in serum and bronchial alveolar lavage fluid between ARDS patients and control subjects. We found that RAGE knockout significantly improved alveolar fluid clearance and reduced pulmonary vascular albumin leakage upon LPS challenge. Furthermore, LPS-induced substantial decrease in lung expression of sodium-potassium ATPase (Na,K-ATPase), epithelial sodium channel, and zonula occluden-1 (ZO-1) were fully or partially restored by the deletion of RAGE. In addition to this, LPS-induced lung leukocyte infiltration and inflammatory cytokine and chemokine release were all attenuated in RAGE mice as compared to wide-type mice. In infection-related ARDS patients, both serum and bronchial alveolar lavage fluid levels of the sRAGE were much higher than those in control subjects, and they were positively correlated with pulmonary vascular permeability and levels of interleukin (IL)-6, IL-8, and macrophage inflammatory protein (MIP)-2. Taken together, we provided the first direct evidence for the essential role of RAGE in regulating lung fluid balance in infection-related ARDS/ALI. The underlying mechanisms may involve the downregulation of both ion-channel and tight junction proteins mediated by RAGE signaling in bacterial endotoxin-induced lung injury.
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