1
|
Wang F, Zeng L, Chi Y, Yao S, Zheng Z, Peng S, Wang X, Chen K. Adipose-Derived exosome from Diet-Induced-Obese mouse attenuates LPS-Induced acute lung injury by inhibiting inflammation and Apoptosis: In vivo and in silico insight. Int Immunopharmacol 2024; 139:112679. [PMID: 39013217 DOI: 10.1016/j.intimp.2024.112679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 06/30/2024] [Accepted: 07/11/2024] [Indexed: 07/18/2024]
Abstract
BACKGROUND Acute lung injury (ALI) is a severe clinical condition in the intensive care units, and obesity is a high risk of ALI. Paradoxically, obese ALI patients had better prognosis than non-obese patients, and the mechanism remains largely unknown. METHODS Mouse models of ALI and diet-induced-obesity (DIO) were used to investigate the effect of exosomes derived from adipose tissue. The adipose-derived exosomes (ADEs) were isolated by ultracentrifugation, and the role of exosomal miRNAs in the ALI was studied. RESULTS Compared with ADEs of control mice (C-Exo), ADEs of DIO mice (D-Exo) increased survival rate and mitigated pulmonary lesions of ALI mice. GO and KEGG analyses showed that the target genes of 40 differentially expressed miRNAs between D-Exo and C-Exo were mainly involved with inflammation, apoptosis and cell cycle. Furthermore, the D-Exo treatment significantly decreased Ly6G+ cell infiltration, down-regulated levels of pro-inflammatory cytokines (IL-6, IL-12, TNF-α, MCP-1) and chemokines (IL-8 and MIP-2), reduced pulmonary apoptosis and arrest at G0G1 phase (P < 0.01). And the protective effects of D-Exo were better than those of C-Exo (P < 0.05). Compared with the C-Exo mice, the levels of miR-16-5p and miR-335-3p in the D-Exo mice were significantly up-regulated (P < 0.05), and the expressions of IKBKB and TNFSF10, respective target of miR-16-5p and miR-335-3p by bioinformatic analysis, were significantly down-regulated in the D-Exo mice (P < 0.05). CONCLUSIONS Exosomes derived from adipose tissue of DIO mice are potent to attenuate LPS-induced ALI, which could be contributed by exosome-carried miRNAs. Our data shed light on the interaction between obesity and ALI.
Collapse
Affiliation(s)
- Fengyuan Wang
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, Sichuan 610041, PR China
| | - Lei Zeng
- School of Public Health, Chengdu Medical College, Chengdu, Sichuan 610500, PR China
| | - Yanqi Chi
- School of Public Health, Chengdu Medical College, Chengdu, Sichuan 610500, PR China
| | - Surui Yao
- School of Public Health, Chengdu Medical College, Chengdu, Sichuan 610500, PR China
| | - Zihan Zheng
- School of Public Health, Chengdu Medical College, Chengdu, Sichuan 610500, PR China
| | - Shiyu Peng
- School of Public Health, Chengdu Medical College, Chengdu, Sichuan 610500, PR China
| | - Xiangning Wang
- School of Public Health, Chengdu Medical College, Chengdu, Sichuan 610500, PR China
| | - Kejie Chen
- School of Public Health, Chengdu Medical College, Chengdu, Sichuan 610500, PR China.
| |
Collapse
|
2
|
Zeng H, Zhou Y, Liu Z, Liu W. MiR-21-5p modulates LPS-induced acute injury in alveolar epithelial cells by targeting SLC16A10. Sci Rep 2024; 14:11160. [PMID: 38750066 PMCID: PMC11096310 DOI: 10.1038/s41598-024-61777-x] [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: 01/19/2024] [Accepted: 05/09/2024] [Indexed: 05/18/2024] Open
Abstract
Sepsis is a systemic inflammatory response syndrome resulting from the invasion of the human body by bacteria and other pathogenic microorganisms. One of its most prevalent complications is acute lung injury, which places a significant medical burden on numerous countries and regions due to its high morbidity and mortality rates. MicroRNA (miRNA) plays a critical role in the body's inflammatory response and immune regulation. Recent studies have focused on miR-21-5p in the context of acute lung injury, but its role appears to vary in different models of this condition. In the LPS-induced acute injury model of A549 cells, there is differential expression, but the specific mechanism remains unclear. Therefore, our aim is to investigate the changes in the expression of miR-21-5p and SLC16A10 in a type II alveolar epithelial cell injury model induced by LPS and explore the therapeutic effects of their targeted regulation. A549 cells were directly stimulated with 10 µg/ml of LPS to construct a model of LPS-induced cell injury. Cells were collected at different time points and the expression of interleukin 1 beta (IL-1β), tumor necrosis factor-α (TNF-α) and miR-21-5p were measured by RT-qPCR and western blot. Then miR-21-5p mimic transfection was used to up-regulate the expression of miR-21-5p in A549 cells and the expression of IL-1β and TNF-α in each group of cells was measured by RT-qPCR and western blot. The miRDB, TargetScan, miRWalk, Starbase, Tarbase and miR Tarbase databases were used to predict the miR-21-5p target genes and simultaneously, the DisGeNet database was used to search the sepsis-related gene groups. The intersection of the two groups was taken as the core gene. Luciferase reporter assay further verified SLC16A10 as the core gene with miR-21-5p. The expression of miR-21-5p and SLC16A10 were regulated by transfection or inhibitors in A549 cells with or without LPS stimulation. And then the expression of IL-1β and TNF-α in A549 cells was tested by RT-qPCR and western blot in different groups, clarifying the role of miR-21-5p-SLC16A10 axis in LPS-induced inflammatory injury in A549 cells. (1) IL-1β and TNF-α mRNA and protein expression significantly increased at 6, 12, and 24 h after LPS stimulation as well as the miR-21-5p expression compared with the control group (P < 0.05). (2) After overexpression of miR-21-5p in A549 cells, the expression of IL-1β and TNF-α was significantly reduced after LPS stimulation, suggesting that miR-21-5p has a protection against LPS-induced injury. (3) The core gene set, comprising 51 target genes of miR-21-5p intersecting with the 1448 sepsis-related genes, was identified. This set includes SLC16A10, TNPO1, STAT3, PIK3R1, and FASLG. Following a literature review, SLC16A10 was selected as the ultimate target gene. Dual luciferase assay results confirmed that SLC16A10 is indeed a target gene of miR-21-5p. (4) Knocking down SLC16A10 expression by siRNA significantly reduced the expression of IL-1β and TNF-α in A549 cells after LPS treatment (P < 0.05). (5) miR-21-5p inhibitor increased the expression levels of IL-1β and TNF-α in A549 cells after LPS stimulation (P < 0.05). In comparison to cells solely transfected with miR-21-5p inhibitor, co-transfection of miR-21-5p inhibitor and si-SLC6A10 significantly reduced the expression of IL-1β and TNF-α (P < 0.05). MiR-21-5p plays a protective role in LPS-induced acute inflammatory injury of A549 cells. By targeting SLC16A10, it effectively mitigates the inflammatory response in A549 cells induced by LPS. Furthermore, SLC16A10 holds promise as a potential target for the treatment of acute lung injury.
Collapse
Affiliation(s)
- Huanan Zeng
- Emergency Department, The First Hospital of China Medical University, No.155 of North Street Nanjing, Heping District, Shenyang, 110001, Liaoning, China
| | - Yuqing Zhou
- Emergency Department, The First Hospital of China Medical University, No.155 of North Street Nanjing, Heping District, Shenyang, 110001, Liaoning, China
| | - Zhi Liu
- Emergency Department, The First Hospital of China Medical University, No.155 of North Street Nanjing, Heping District, Shenyang, 110001, Liaoning, China.
| | - Wei Liu
- Emergency Department, The First Hospital of China Medical University, No.155 of North Street Nanjing, Heping District, Shenyang, 110001, Liaoning, China.
| |
Collapse
|
3
|
Côté A, Lee CH, Metwaly SM, Doig CJ, Andonegui G, Yipp BG, Parhar KKS, Winston BW. Endotyping in ARDS: one step forward in precision medicine. Eur J Med Res 2024; 29:284. [PMID: 38745261 PMCID: PMC11092098 DOI: 10.1186/s40001-024-01876-7] [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: 04/06/2023] [Accepted: 04/30/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND The Berlin definition of acute respiratory distress syndrome (ARDS) includes only clinical characteristics. Understanding unique patient pathobiology may allow personalized treatment. We aimed to define and describe ARDS phenotypes/endotypes combining clinical and pathophysiologic parameters from a Canadian ARDS cohort. METHODS A cohort of adult ARDS patients from multiple sites in Calgary, Canada, had plasma cytokine levels and clinical parameters measured in the first 24 h of ICU admission. We used a latent class model (LCM) to group the patients into several ARDS subgroups and identified the features differentiating those subgroups. We then discuss the subgroup effect on 30 day mortality. RESULTS The LCM suggested three subgroups (n1 = 64, n2 = 86, and n3 = 30), and 23 out of 69 features made these subgroups distinct. The top five discriminating features were IL-8, IL-6, IL-10, TNF-a, and serum lactate. Mortality distinctively varied between subgroups. Individual clinical characteristics within the subgroup associated with mortality included mean PaO2/FiO2 ratio, pneumonia, platelet count, and bicarbonate negatively associated with mortality, while lactate, creatinine, shock, chronic kidney disease, vasopressor/ionotropic use, low GCS at admission, and sepsis were positively associated. IL-8 and Apache II were individual markers strongly associated with mortality (Area Under the Curve = 0.84). PERSPECTIVE ARDS subgrouping using biomarkers and clinical characteristics is useful for categorizing a heterogeneous condition into several homogenous patient groups. This study found three ARDS subgroups using LCM; each subgroup has a different level of mortality. This model may also apply to developing further trial design, prognostication, and treatment selection.
Collapse
Affiliation(s)
- Andréanne Côté
- Department of Medicine, Institut Universitaire de Cardiologie et de Pneumologie de Quebec-Université Laval, Quebec, Canada
- Department of Critical Care Medicine, Medicine and Biochemistry and Molecular Biology, Health Research Innovation Center (HRIC), University of Calgary, Room 4C64, 3280 Hospital Drive N.W., Calgary, AB, T2N 4Z6, Canada
| | - Chel Hee Lee
- Department of Critical Care Medicine, Medicine and Biochemistry and Molecular Biology, Health Research Innovation Center (HRIC), University of Calgary, Room 4C64, 3280 Hospital Drive N.W., Calgary, AB, T2N 4Z6, Canada
- Department of Mathematics and Statistics, University of Calgary, Calgary, Canada
| | - Sayed M Metwaly
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK
- Division of Internal Medicine, Aberdeen Royal Infirmary, NHS Scotland, Aberdeen, UK
| | - Christopher J Doig
- Department of Critical Care Medicine, Medicine and Biochemistry and Molecular Biology, Health Research Innovation Center (HRIC), University of Calgary, Room 4C64, 3280 Hospital Drive N.W., Calgary, AB, T2N 4Z6, Canada
| | | | - Bryan G Yipp
- Department of Critical Care Medicine, Medicine and Biochemistry and Molecular Biology, Health Research Innovation Center (HRIC), University of Calgary, Room 4C64, 3280 Hospital Drive N.W., Calgary, AB, T2N 4Z6, Canada
| | - Ken Kuljit S Parhar
- Department of Critical Care Medicine, Medicine and Biochemistry and Molecular Biology, Health Research Innovation Center (HRIC), University of Calgary, Room 4C64, 3280 Hospital Drive N.W., Calgary, AB, T2N 4Z6, Canada
| | - Brent W Winston
- Department of Critical Care Medicine, Medicine and Biochemistry and Molecular Biology, Health Research Innovation Center (HRIC), University of Calgary, Room 4C64, 3280 Hospital Drive N.W., Calgary, AB, T2N 4Z6, Canada.
- Depatments of Medicine, University of Calgary, Calgary, Canada.
- Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, Canada.
| |
Collapse
|
4
|
Gao J, Zhang Z, Yan JY, Ge YX, Gao Y. Inflammation and coagulation abnormalities via the activation of the HMGB1‑RAGE/NF‑κB and F2/Rho pathways in lung injury induced by acute hypoxia. Int J Mol Med 2023; 52:67. [PMID: 37350396 PMCID: PMC10555482 DOI: 10.3892/ijmm.2023.5270] [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: 03/02/2023] [Accepted: 05/15/2023] [Indexed: 06/24/2023] Open
Abstract
High‑altitude acute hypoxia is commonly associated with respiratory cardiovascular diseases. The inability to adapt to acute hypoxia may lead to cardiovascular dysfunction, lung injury and even death. Therefore, understanding the molecular basis of the adaptation to high‑altitude acute hypoxia may reveal novel therapeutic approaches with which to counteract the detrimental consequences of hypoxia. In the present study, a high‑altitude environment was simulated in a rat model in order to investigate the role of the high mobility group protein‑1 (HMGB1)/receptor for advanced glycation end products (RAGE)/NF‑κB and F2/Rho signaling pathways in lung injury induced by acute hypoxia. It was found that acute hypoxia caused inflammation through the HMGB1/RAGE/NF‑κB pathway and coagulation dysfunction through the F2/Rho pathway, both of which may be key processes in acute hypoxia‑induced lung injury. The present study provides new insight into the molecular basis of lung injury induced by acute hypoxia. The simultaneous activation of the HMGB1/RAGE/NF‑κB and F2/Rho signaling pathways plays a critical role in hypoxia‑induced inflammatory responses and coagulation abnormalities, and provides a theoretical basis for the development of potential therapeutic strategies.
Collapse
Affiliation(s)
| | | | - Jia-Yi Yan
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, P.R. China
| | - Yun-Xuan Ge
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, P.R. China
| | - Yue Gao
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, P.R. China
| |
Collapse
|
5
|
Li G, Ma J, Yang Y, Zang C, Ju C, Yuan F, Ning J, Shang M, Chen Q, Jiang Y, Li F, Bao X, Mu D, Zhang D. Yinma Jiedu Granule attenuates LPS-induced acute lung injury in rats via suppressing inflammation level. JOURNAL OF ETHNOPHARMACOLOGY 2023; 310:116292. [PMID: 36931412 DOI: 10.1016/j.jep.2023.116292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 02/07/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Yinma Jiedu Granule (YMJD) is a traditional Chinese patent medicine (CPM), which has been proved to have anti-inflammatory effects and therapeutical effects on obstructive pulmonary disease. AIM OF STUDY The purpose of the current investigation is to find out if YMJD can alleviate acute lung injury (ALI) induced by lipopolysaccharide (LPS) in rats and its underlying mechanisms. MATERIALS AND METHODS Rats were treated with either vehicle or YMJD for 14 consecutive days, and 2 h after the last administration, the rat model of ALI was induced by the intratracheal instillation of LPS. High performance liquid chromatography (HPLC) was applied for the fingerprint analysis of YMJD. The efficacy and molecular mechanisms were investigated. RESULTS The results showed that treatment with YMJD improved the general state of rats, reduced weight loss and serum lactate (LA) levels, attenuated pulmonary edema and pathological damage of the lung tissue. Moreover, we found that YMJD effectively decreased the infiltration of white blood cells (WBC), lymphocytes (LYM), mononuclear cells (MON) and neutrophils (NEUT) in bronchoalveolar lavage fluid (BALF), reduced the concentration of tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) and inhibited inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression in the lung tissue. Additionally, we found that YMJD could significantly increase the activity of superoxide dismutase (SOD) and reduce the malondialdehyde (MDA) level in the lung tissue. By employing RNA-sequencing, we have identified that JAK2/STAT1 is an important pathway that is involved in the lung protection of YMJD, and further Western blot assay verified that YMJD could effectively inhibit the activation of the JAK2/STAT1 pathway. CONCLUSIONS YMJD could attenuate LPS-induced ALI through suppressing inflammation and oxidative stress in the lung tissue of rats, associating with the inhibition of JAK2/STAT1 activation. These findings provide evidence for the clinical use of YMJD for treatment of inflammatory pulmonary diseases like ALI.
Collapse
Affiliation(s)
- Gen Li
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Jingwei Ma
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Yang Yang
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Caixia Zang
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Cheng Ju
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Fangyu Yuan
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Jingwen Ning
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Meiyu Shang
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Qiuzhu Chen
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Yueqi Jiang
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Fangfang Li
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Xiuqi Bao
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Degui Mu
- Fudan University, Shanghai, China.
| | - Dan Zhang
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| |
Collapse
|
6
|
de Araújo LJT, de Oliveira Louzado LC, Cirqueira CS, Réssio RA, Sansone M, Guerra JM. Histopathologic and Immunohistochemical Assessment of Acute Respiratory Distress Syndrome (ARDS): Challenges and Complexities of Postmortem Diagnosis. Appl Immunohistochem Mol Morphol 2023; 31:311-317. [PMID: 37010513 DOI: 10.1097/pai.0000000000001121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 03/02/2023] [Indexed: 04/04/2023]
Abstract
Acute respiratory distress syndrome (ARDS) is a life-threatening condition due to acute lung injury (ALI), characterized by rapid-onset respiratory failure, leading to the clinical manifestations of poor lung compliance, severe hypoxemia, and dyspnea. ARDS/ALI has many causes, most commonly related to infections (sepsis, pneumonia), traumas, and multiple transfusions. The objective of this study is to assess the performance of postmortem anatomopathological examination in identifying etiological agents associated with ARDS or ALI in deceased patients from the State of São Paulo from 2017 to 2018. A retrospective cross-sectional study was performed based on the final outcome obtained by histopathology, histochemical, and immunohistochemical examination for ARDS/ALI differential diagnosis at the Pathology Center of the Adolfo Lutz Institute in São Paulo, Brazil. Of the 154 patients clinically diagnosed with ARDS or ALI, 57% tested positive for infectious agents, and the most frequent outcome was influenza A/H1N1 virus infection. In 43% of cases, no etiologic agent was identified. The opportunity to establish a diagnosis, identify particular infections, confirm a microbiological diagnosis, and uncover unanticipated etiologies is provided by postmortem pathologic analysis of ARDS. A molecular assessment could improve the diagnosis accuracy and lead to research into host responses and public health measures.
Collapse
Affiliation(s)
- Leonardo José Tadeu de Araújo
- Pathology Center, Adolfo Lutz Institute
- Department of Infectious and Parasitic Diseases, Institute of Tropical Medicine, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | | | | | | | | | | |
Collapse
|
7
|
Huffman EE, Dong BE, Clarke HA, Young LEA, Gentry MS, Allison DB, Sun RC, Waters CM, Alilain WJ. Cervical spinal cord injury leads to injury and altered metabolism in the lungs. Brain Commun 2023; 5:fcad091. [PMID: 37065091 PMCID: PMC10090796 DOI: 10.1093/braincomms/fcad091] [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: 07/20/2022] [Revised: 01/17/2023] [Accepted: 03/26/2023] [Indexed: 03/30/2023] Open
Abstract
High-cervical spinal cord injury often disrupts respiratory motor pathways and disables breathing in the affected population. Moreover, cervically injured individuals are at risk for developing acute lung injury, which predicts substantial mortality rates. While the correlation between acute lung injury and spinal cord injury has been found in the clinical setting, the field lacks an animal model to interrogate the fundamental biology of this relationship. To begin to address this gap in knowledge, we performed an experimental cervical spinal cord injury (N = 18) alongside sham injury (N = 3) and naïve animals (N = 15) to assess lung injury in adult rats. We demonstrate that animals display some early signs of lung injury two weeks post-spinal cord injury. While no obvious histological signs of injury were observed, the spinal cord injured cohort displayed significant signs of metabolic dysregulation in multiple pathways that include amino acid metabolism, lipid metabolism, and N-linked glycosylation. Collectively, we establish for the first time a model of lung injury after spinal cord injury at an acute time point that can be used to monitor the progression of lung damage, as well as identify potential targets to ameliorate acute lung injury.
Collapse
Affiliation(s)
- Emily E Huffman
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY 40508, USA
- Spinal Cord and Brain Injury Research Center, University of Kentucky College of Medicine, Lexington, KY 40508, USA
| | - Brittany E Dong
- Department of Physiology, University of Kentucky College of Medicine, Lexington, KY 40508, USA
| | - Harrison A Clarke
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY 40508, USA
| | - Lyndsay E A Young
- Markey Cancer Center, University of Kentucky, Lexington, KY 40508, USA
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40508, USA
| | - Matthew S Gentry
- Markey Cancer Center, University of Kentucky, Lexington, KY 40508, USA
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40508, USA
| | - Derek B Allison
- Markey Cancer Center, University of Kentucky, Lexington, KY 40508, USA
- Department of Pathology and Laboratory Medicine, University of Kentucky College of Medicine, Lexington, KY 40508, USA
| | - Ramon C Sun
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY 40508, USA
- Spinal Cord and Brain Injury Research Center, University of Kentucky College of Medicine, Lexington, KY 40508, USA
| | - Christopher M Waters
- Department of Physiology, University of Kentucky College of Medicine, Lexington, KY 40508, USA
- Saha Cardiovascular Research Center, University of Kentucky College of Medicine, Lexington, KY 40508, USA
| | - Warren J Alilain
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY 40508, USA
- Spinal Cord and Brain Injury Research Center, University of Kentucky College of Medicine, Lexington, KY 40508, USA
| |
Collapse
|
8
|
Lee H, Krishnan M, Kim M, Yoon YK, Kim Y. Rhamnetin, a Natural Flavonoid, Ameliorates Organ Damage in a Mouse Model of Carbapenem-Resistant Acinetobacter baumannii-Induced Sepsis. Int J Mol Sci 2022; 23:12895. [PMID: 36361685 PMCID: PMC9656386 DOI: 10.3390/ijms232112895] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 10/16/2022] [Accepted: 10/24/2022] [Indexed: 11/15/2023] Open
Abstract
In sepsis, the persistence of uncontrolled inflammatory response of infected host cells eventually leads to severe lung and organ failure and, ultimately, death. Carbapenem-resistant Acinetobacter baumannii (CRAB), causative bacteria of sepsis and lung failure in acute cases, belongs to a group of critical pathogens that cannot be eradicated using the currently available antibiotics. This underlines the necessity of developing new modes of therapeutics that can control sepsis at the initial stages. In this study, we investigated the anti-inflammatory activities in vitro and in vivo and the antiseptic effects of rhamnetin, a naturally occurring flavonoid. We found that among its isoforms, the potency of rhamnetin was less explored but rhamnetin possessed superior anti-inflammatory activity with least cytotoxicity. Rhamnetin showed significant anti-inflammatory effects in lipopolysaccharide-, CRAB-, and Escherichia coli (E. coli)-stimulated mouse macrophages by inhibiting the release of interleukin-6 and nitric oxide. In a mouse model of sepsis infected with clinically isolated CRAB or E. coli, rhamnetin significantly reduced the bacterial burden in the organs. In addition, normalized pro-inflammatory cytokine levels in lung lysates and histological analysis of lung tissue indicated alleviation of lung damage. This study implies that a potent natural product such as rhamnetin could be a future therapeutic for treating carbapenem-resistant gram-negative sepsis.
Collapse
Affiliation(s)
- Hyeju Lee
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Manigandan Krishnan
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Minju Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Young Kyung Yoon
- Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, Korea University Anam Hospital, Korea University, Seoul 02841, Korea
| | - Yangmee Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
| |
Collapse
|
9
|
Li H, Niu X, Shi H, Feng M, Du Y, Sun R, Ma N, Wang H, Wei D, Gao M. circHECTD1 attenuates apoptosis of alveolar epithelial cells in acute lung injury. J Transl Med 2022; 102:945-956. [PMID: 36775423 DOI: 10.1038/s41374-022-00781-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 02/21/2022] [Accepted: 03/04/2022] [Indexed: 12/26/2022] Open
Abstract
Circular RNAs (circRNAs) play important roles in many lung diseases. This study aimed to investigate the role of circHECTD1 in acute lung injury (ALI). The mouse and cell models of ALI were induced by lipopolysaccharide (LPS). The apoptosis of alveolar epithelial cells (AECs) was detected by flow cytometry. The relationships between circHECTD1, miRNAs, and target genes were assessed by RNA pull-down, luciferase reporter gene, and RNA-FISH assays. circHECTD1 was downregulated in LPS-induced human and mouse AECs (HBE and MLE-12). The knockdown of circHECTD1 increased the apoptotic rates and the expressions of miR-136 and miR-320a, while its overexpression caused opposite effects in LPS-induced HBE and MLE-12 cells. Mechanistically, circHECTD1 bound to miR-320a and miR-136. miR-320a targeted PIK3CA and mediated the effect of circHECTD1 on PIK3CA expression. miR-136 targeted Sirt1 and mediated the effect of circHECTD1 on Sirt1 expression. Silencing PIK3CA and/or Sirt1 reversed the effect of circHECTD1 overexpression on the apoptosis of LPS-induced HBE and MLE-12 cells. In vivo, overexpression of circHECTD1 alleviated the LPS-induced ALI of mice. Our findings suggested that circHECTD1 inhibits the apoptosis of AECs through miR-320a/PIK3CA and miR-136/Sirt1 pathways in LPS-induced ALI.
Collapse
Affiliation(s)
- Hongbin Li
- Department of Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan Province, China.
| | - Xiaoxuan Niu
- Department of Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan Province, China
| | - Huijuan Shi
- Department of Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan Province, China
| | - Min Feng
- Department of Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan Province, China
| | - Yuming Du
- Department of Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan Province, China
| | - Rongqing Sun
- Department of Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan Province, China
| | - Ning Ma
- Department of Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan Province, China
| | - Haili Wang
- Department of Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan Province, China
| | - Dan Wei
- Department of Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan Province, China
| | - Min Gao
- Department of Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan Province, China.
| |
Collapse
|
10
|
Qiu Y, Tang Z. Dexmedetomidine Attenuates LPS-Induced Acute Lung Injury in Rats by Activating the Nrf2/ARE Pathway. JOURNAL OF HEALTHCARE ENGINEERING 2022; 2022:4185195. [PMID: 35449859 PMCID: PMC9017427 DOI: 10.1155/2022/4185195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/16/2022] [Accepted: 03/23/2022] [Indexed: 11/29/2022]
Abstract
Background To investigate the effect of dexmedetomidine (Dex) on lipopolysaccharide (LPS)-induced acute lung injury (ALI) in rats and its mechanism. Methods Eighteen SD rats were randomly divided into 3 groups (6 rats in each group): control group (intratracheal instillation of saline), ALI group (intratracheal instillation of 5 mg/kg LPS), and ALI-Dex group (tail vein injection of 50 μg/kg/h Dex + intratracheal instillation of LPS). Subsequently, the water content of lung tissues was assessed using the wet-dry (W/D) ratio and the histopathological changes of lung tissues using H&E staining. Further activities of ROS, SOD, and GSH-Px in lung tissues of rats were measured by an automatic biochemistry analyzer. ELISA was performed to detect TNF-α, IL-1β, and IL-6 expression in alveolar lavage fluid (BALF) and Western blot to detect the expression of Nrf2/ARE pathway-related proteins. Results After Dex treatment, a reduction in water content in lung tissue and an improvement of lung injury were found in the ALI rats. Compared with the ALI group, rats in the ALI-Dex group had decreased ROS activity and increased activities of SOD and GSH-Px in lung tissues. Dex-treated rats were also associated with a decrease in TNF-α, IL-1β, and IL-6 expression in alveolar lavage fluid (BALF). Additionally, increased expression levels of HO-1 and NQO1 in lung tissues and elevated expression of Nrf2 in the nucleus were shown in the ALI-Dex group compared with the ALI group. Conclusion Dex alleviates LPS-induced ALI by activating the Nrf2/ARE signaling pathway.
Collapse
Affiliation(s)
- Yuandong Qiu
- Department of Anesthesiology, Koiqeung Memorial Hospital, Guangzhou, Guangdong, China
- The Fifth Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510900, China
| | - Zhiwei Tang
- The Fifth Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510900, China
| |
Collapse
|
11
|
Li J, Bai Y, Tang Y, Wang X, Cavagnaro MJ, Li L, Li Z, Zhang Y, Shi J. A 4-Benzene-Indol Derivative Alleviates LPS-Induced Acute Lung Injury Through Inhibiting the NLRP3 Inflammasome. Front Immunol 2022; 13:812164. [PMID: 35222388 PMCID: PMC8866853 DOI: 10.3389/fimmu.2022.812164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/10/2022] [Indexed: 12/12/2022] Open
Abstract
Acute lung injury (ALI) is a common complication of critical illness that could frequently lead to acute respiratory distress syndrome and other serious clinical consequences. Sepsis is one of the major and most common inducements among all causes of ALI. Due to its high incidence and mortality rate and also the complexity in treatment, sepsis-related ALI has become an urgent clinical problem waiting to be solved effectively. At present, only the protective ventilation strategy, restrictive fluid management, and antibiotics application are measures that can improve the prognosis with evidence-based medical proof. No pharmacological treatment is currently available to protect or significantly reverse the prognosis. Seeking for effective interventions measures for sepsis-related ALI is one of the most necessitous research directions. In this research, a conspicuous discovery of treatment-related translational use for a 4-benzene-indol derivative was elaborated by screening a large number of chemical compounds. The results showed that 4-benzene-indol derivative could not only suppress the activation of NLRP3 inflammasome both in vitro and alleviate LPS-induced ALI in vivo but also suppress the NLRP3 inflammasome in human myeloid leukemia mononuclear cells (THP-1) cell lines. Mechanistically, 1,2-diol blocks the NLRP3 inflammasome activation by disrupting NLRP3–NEK7 interaction and the subsequent NLRP3 inflammasome assembly and activation. To summarize, this research indicated that the newly-discovered 4-benzene-indol derivative targets NLRP3 inflammasome signaling, which consequently alleviates sepsis-related ALI. Collectively, the 4-benzene-indol derivative may serve as a potential therapeutic drug and NLRP3 inflammasome signaling would be a novel pharmaceutical target for clinical treatment of sepsis-related ALI.
Collapse
Affiliation(s)
- Junmei Li
- Department of Hematology and Critical Care Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yang Bai
- Department of Hematology and Critical Care Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yiting Tang
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha, China
| | - Xiangyu Wang
- Department of Hematology and Critical Care Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | | | - Ling Li
- Department of Hematology and Critical Care Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhaozheng Li
- Department of Hematology and Critical Care Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yi Zhang
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Jian Shi
- Department of Hematology and Critical Care Medicine, The Third Xiangya Hospital, Central South University, Changsha, China.,Department of Spine Surgery, The Third Xiangya Hospital, Central South University, Changsha, China
| |
Collapse
|
12
|
Hernández-Cuervo H, Soundararajan R, Sidramagowda Patil S, Breitzig M, Alleyn M, Galam L, Lockey R, Uversky VN, Kolliputi N. BMI1 Silencing Induces Mitochondrial Dysfunction in Lung Epithelial Cells Exposed to Hyperoxia. Front Physiol 2022; 13:814510. [PMID: 35431986 PMCID: PMC9005903 DOI: 10.3389/fphys.2022.814510] [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: 11/13/2021] [Accepted: 02/04/2022] [Indexed: 11/17/2022] Open
Abstract
Acute Lung Injury (ALI), characterized by bilateral pulmonary infiltrates that restrict gas exchange, leads to respiratory failure. It is caused by an innate immune response with white blood cell infiltration of the lungs, release of cytokines, an increase in reactive oxygen species (ROS), oxidative stress, and changes in mitochondrial function. Mitochondrial alterations, changes in respiration, ATP production and the unbalancing fusion and fission processes are key events in ALI pathogenesis and increase mitophagy. Research indicates that BMI1 (B cell-specific Moloney murine leukemia virus integration site 1), a protein of the Polycomb repressive complex 1, is a cell cycle and survival regulator that plays a role in mitochondrial function. BMI1-silenced cultured lung epithelial cells were exposed to hyperoxia to determine the role of BMI1 in mitochondrial metabolism. Its expression significantly decreases in human lung epithelial cells (H441) following hyperoxic insult, as determined by western blot, Qrt-PCR, and functional analysis. This decrease correlates with an increase in mitophagy proteins, PINK1, Parkin, and DJ1; an increase in the expression of tumor suppressor PTEN; changes in the expression of mitochondrial biomarkers; and decreases in the oxygen consumption rate (OCR) and tricarboxylic acid enzyme activity. Our bioinformatics analysis suggested that the BMI1 multifunctionality is determined by its high level of intrinsic disorder that defines the ability of this protein to bind to numerous cellular partners. These results demonstrate a close relationship between BMI1 expression and mitochondrial health in hyperoxia-induced acute lung injury (HALI) and indicate that BMI1 is a potential therapeutic target to treat ALI and Acute Respiratory Distress Syndrome.
Collapse
Affiliation(s)
- Helena Hernández-Cuervo
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Ramani Soundararajan
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Sahebgowda Sidramagowda Patil
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Mason Breitzig
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
- Division of Epidemiology, Department of Public Health Sciences, College of Medicine, Pennsylvania State University, Hershey, PA, United States
| | - Matthew Alleyn
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Lakshmi Galam
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Richard Lockey
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Vladimir N. Uversky
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Narasaiah Kolliputi
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
- *Correspondence: Narasaiah Kolliputi,
| |
Collapse
|
13
|
Song D, Zhao M, Feng L, Wang P, Li Y, Li W. Salidroside attenuates acute lung injury via inhibition of inflammatory cytokine production. Biomed Pharmacother 2021; 142:111949. [PMID: 34325302 DOI: 10.1016/j.biopha.2021.111949] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/10/2021] [Accepted: 07/14/2021] [Indexed: 12/27/2022] Open
Abstract
Acute lung injury is a fatal condition characterized by excessive inflammation responses. Salidroside, the active constituent of Rhodiola rosea, possesses properties including anti-oxidation, anti-aging, anti-inflammatory, anti-hypoxia, and anti-cancer activities. In the present study, Salidroside attenuated acute lung injury via inhibition of inflammatory cytokine production. Rats pre-treated with Salidroside showed attenuated lipopolysaccharide (LPS)-induced pathological damage and suppressed tumor necrosis factor-alpha (TNFα) and interleukin 6 (IL-6) secretion in the lung. Furthermore, flow cytometry showed that Salidroside reduced the production of TNFα and IL-6 in NR8383 alveolar macrophages. These findings suggest that Salidroside may attenuate LPS-induced acute lung injury.
Collapse
Affiliation(s)
- Dan Song
- Engineering Research Center of Tibetan Medicine Detection Technology, Ministry of Education, School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China; Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China
| | - Min Zhao
- Engineering Research Center of Tibetan Medicine Detection Technology, Ministry of Education, School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China; Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China
| | - Liuxiang Feng
- People's Hospital of Yulong Naxi Autonomous County of Lijiang City, Yulong Naxi Autonomous County 674100, Yunnan, China
| | - Pingyi Wang
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China
| | - Yimei Li
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China
| | - Wenhua Li
- Engineering Research Center of Tibetan Medicine Detection Technology, Ministry of Education, School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China; Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang 712082, Shaanxi, China.
| |
Collapse
|
14
|
Yue J, Su K, Zhang G, Yang J, Xu C, Liu X. Dihydrotanshinone Attenuates LPS-Induced Acute Lung Injury in Mice by Upregulating LXRα. Inflammation 2021; 45:212-221. [PMID: 34467464 DOI: 10.1007/s10753-021-01539-3] [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: 01/16/2020] [Accepted: 08/09/2021] [Indexed: 11/26/2022]
Abstract
Dihydrotanshinone (DIH) is an extract of Salvia miltiorrhiza Bunge. It has been reported that DIH could regulate NF-κB signaling pathway. The aim of this study was to investigate whether DIH could protect mice from lipopolysaccharide (LPS)-induced acute lung injury (ALI) in mice. In this study, sixty mice were randomly divided into five groups, one group as blank control group, the second group as LPS control group, and the last three groups were pre-injected with different doses of DIH and then inhaled LPS for experimental comparison. After 12 h of LPS treatment, the wet-dry ratio, histopathlogical changes, and myeloperoxidase (MPO) activity of lungs were measured. In addition, ELISA kits were used to measure the levels of TNF-α and IL-1β inflammatory cytokines in bronchoalveolar lavage fluids (BALF), and western blot analysis was used to measure the activity of NF-κB signaling pathway. The results demonstrated that DIH could effectively reduce pulmonary edema, MPO activity, and improve the lung histopathlogical changes. Furthermore, DIH suppressed the levels of inflammatory cytokines in BALF, such as TNF-α and IL-1β. In addition, DIH could also downregulate the activity of NF-κB signaling pathway. We also found that DIH dose-dependently increased the expression of LXRα. In addition, DIH could inhibit LPS-induced IL-8 production and NF-κB activation in A549 cells. And the inhibitory effects were reversed by LXRα inhibitor geranylgeranyl pyrophosphate (GGPP). Therefore, we speculate that DIH regulates LPS-induced ALI in mice by increasing LXRα expression, which subsequently inhibiting NF-κB signaling pathway.
Collapse
Affiliation(s)
- Jing Yue
- Department of Anesthesiology, The Second Affiliated Hospital of Jilin University, Changchun, China
| | - Kai Su
- Department of Head and Neck Surgery, The Second Affiliated Hospital of Jilin University, Changchun, China
| | - Guangxin Zhang
- Department of Thoracic Surgery, The Second Affiliated Hospital of Jilin University, Changchun, China
| | - Jinghui Yang
- Department of Hepatobiliary Pancreatic Surgery, China-Japan Friendship Hospital of Jilin University, Changchun, China
| | - Chengbi Xu
- Department of Head and Neck Surgery, The Second Affiliated Hospital of Jilin University, Changchun, China
| | - Xueshibojie Liu
- Department of Head and Neck Surgery, The Second Affiliated Hospital of Jilin University, Changchun, China.
- Department of Head and Neck Surgery, The Second Affiliated Hospital of Jilin University, Changchun, China.
| |
Collapse
|
15
|
Wang M, Zhong H, Zhang X, Huang X, Wang J, Li Z, Chen M, Xiao Z. EGCG promotes PRKCA expression to alleviate LPS-induced acute lung injury and inflammatory response. Sci Rep 2021; 11:11014. [PMID: 34040072 PMCID: PMC8154949 DOI: 10.1038/s41598-021-90398-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 05/10/2021] [Indexed: 12/11/2022] Open
Abstract
Acute lung injury (ALI), which could be induced by multiple factors such as lipopolysaccharide (LPS), refer to clinical symptoms of acute respiratory failure, commonly with high morbidity and mortality. Reportedly, active ingredients from green tea have anti-inflammatory and anticancer properties, including epigallocatechin-3-gallate (EGCG). In the present study, protein kinase C alpha (PRKCA) is involved in EGCG protection against LPS-induced inflammation and ALI. EGCG treatment attenuated LPS-stimulated ALI in mice as manifested as improved lung injury scores, decreased total cell amounts, neutrophil amounts and macrophage amounts, inhibited the activity of MPO, decreased wet-to-dry weight ratio of lung tissues, and inhibited release of inflammatory cytokines TNF-α, IL-1β, and IL-6. PRKCA mRNA and protein expression showed to be dramatically decreased by LPS treatment while reversed by EGCG treatment. Within LPS-stimulated ALI mice, PRKCA silencing further aggravated, while PRKCA overexpression attenuated LPS-stimulated inflammation and ALI through MAPK signaling pathway. PRKCA silencing attenuated EGCG protection. Within LPS-induced RAW 264.7 macrophages, EGCG could induce PRKCA expression. Single EGCG treatment or Lv-PRKCA infection attenuated LPS-induced increases in inflammatory factors; PRKCA silencing could reverse the suppressive effects of EGCG upon LPS-stimulated inflammatory factor release. In conclusion, EGCG pretreatment inhibits LPS-induced ALI in mice. The protective mechanism might be associated with the inhibitory effects of PRKCA on proinflammatory cytokine release via macrophages and MAPK signaling pathway.
Collapse
Affiliation(s)
- Mian Wang
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Xiangya RD 110, Changsha, 410078, China
- Department of Epidemiology and Health Statistics, School of Public Health, University of South China, Hengyang, 421001, China
| | - Hua Zhong
- Department of Cardiology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Xian Zhang
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Xiangya RD 110, Changsha, 410078, China
| | - Xin Huang
- Department of Epidemiology and Health Statistics, Hunan Normal University, Changsha, 410006, China
| | - Jing Wang
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Xiangya RD 110, Changsha, 410078, China
| | - Zihao Li
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Xiangya RD 110, Changsha, 410078, China
| | - Mengshi Chen
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Xiangya RD 110, Changsha, 410078, China.
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Central South University, Changsha, 410078, China.
| | - Zhenghui Xiao
- Hunan Provincial Key Laboratory of Pediatric Emergency, Hunan Children's Hospital, Changsha, 410006, China
| |
Collapse
|
16
|
Metwaly S, Côté A, Donnelly SJ, Banoei MM, Lee CH, Andonegui G, Yipp BG, Vogel HJ, Fiehn O, Winston BW. ARDS metabolic fingerprints: characterization, benchmarking, and potential mechanistic interpretation. Am J Physiol Lung Cell Mol Physiol 2021; 321:L79-L90. [PMID: 33949201 DOI: 10.1152/ajplung.00077.2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In this study, we aimed to identify acute respiratory distress syndrome (ARDS) metabolic fingerprints in selected patient cohorts and compare the metabolic profiles of direct versus indirect ARDS and hypoinflammatory versus hyperinflammatory ARDS. We hypothesized that the biological and inflammatory processes in ARDS would manifest as unique metabolomic fingerprints that set ARDS apart from other intensive care unit (ICU) conditions and could help examine ARDS subphenotypes and clinical subgroups. Patients with ARDS (n = 108) and ICU ventilated controls (n = 27) were included. Samples were randomly divided into 2/3 training and 1/3 test sets. Samples were analyzed using 1H nuclear magnetic resonance spectroscopy and gas chromatography-mass spectrometry. Twelve proteins/cytokines were also measured. Orthogonal partial least squares discriminant analysis (OPLS-DA) was used to select the most differentiating ARDS metabolites and protein/cytokines. Predictive performance of OPLS-DA models was measured in the test set. Temporal changes of metabolites were examined as patients progressed through ARDS until clinical recovery. Metabolic profiles of direct versus indirect ARDS subgroups and hypoinflammatory versus hyperinflammatory ARDS subgroups were compared. Serum metabolomics and proteins/cytokines had similar area under receiver operator curves when distinguishing ARDS from ICU controls. Pathway analysis of ARDS differentiating metabolites identified a dominant involvement of serine-glycine metabolism. In longitudinal tracking, the identified pathway metabolites generally exhibited correction by 7-14 days, coinciding with clinical improvement. ARDS subphenotypes and clinical subgroups were metabolically distinct. However, our identified metabolic fingerprints are not ARDS diagnostic biomarkers, and further research is required to ascertain generalizability. In conclusion, patients with ARDS are metabolically different from ICU controls. ARDS subphenotypes and clinical subgroups are metabolically distinct.
Collapse
Affiliation(s)
- Sayed Metwaly
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, United Kingdom.,Department of Internal Medicine, Aberdeen Royal Infirmary, NHS Scotland, Aberdeen, United Kingdom.,Department of Critical Care Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Andréanne Côté
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Montreal, Québec, Canada
| | - Sarah J Donnelly
- Department of Critical Care Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Mohammad M Banoei
- Department of Critical Care Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Chel H Lee
- Department of Critical Care Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Graciela Andonegui
- Department of Critical Care Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Bryan G Yipp
- Department of Critical Care Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Hans J Vogel
- Bio-NMR Center, Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Oliver Fiehn
- West Coast Metabolomics Center, University of California, Davis, California
| | - Brent W Winston
- Department of Critical Care Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, Alberta, Canada
| |
Collapse
|
17
|
Wang J, Cai X, Ma R, Lei D, Pan X, Wang F. Anti-inflammatory Effects of Sweroside on LPS-Induced ALI in Mice Via Activating SIRT1. Inflammation 2021; 44:1961-1968. [PMID: 33913051 DOI: 10.1007/s10753-021-01473-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 04/12/2021] [Accepted: 04/21/2021] [Indexed: 11/29/2022]
Abstract
Sweroside, as one of the main components of Swertia L. in Gentianaceae, has the effect of clearing heat and detoxifying. In previous studies, sweroside has been reported to have anti-inflammatory effect on LPS-induced inflammation by alleviating NF-κB signaling pathway. In this paper, we investigate the anti-inflammatory effects of sweroside by establishing LPS-induced acute lung injury (ALI) model in mice. Experimental results showed that sweroside could reduce the wet-to-dry ratio of the lung and inhibit MPO activity. In addition, it turned out that sweroside reduced pathological changes in lung tissue and the numbers of inflammatory cells. Moreover, sweroside significantly reduced the levels of inflammatory cytokines and down-regulated the NF-κB signaling pathway. And the results demonstrated that sweroside could increase the expression of SIRT1, and the protective effects of sweroside on LPS-induced ALI were reversed by SIRT1 inhibitor EX-527. In conclusion, sweroside can protect LPS-induced ALI mice through inhibiting inflammation.
Collapse
Affiliation(s)
- Juan Wang
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, Jinan, China. .,NHC Key Laboratory of Otorhinolaryngology, Shandong University, Jinan, China.
| | - Xiaolan Cai
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, Jinan, China.,NHC Key Laboratory of Otorhinolaryngology, Shandong University, Jinan, China
| | - Rui Ma
- Department of Pharmacy, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Dapeng Lei
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, Jinan, China.,NHC Key Laboratory of Otorhinolaryngology, Shandong University, Jinan, China
| | - Xinliang Pan
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, Jinan, China.,NHC Key Laboratory of Otorhinolaryngology, Shandong University, Jinan, China
| | - Fengshan Wang
- Institute of Biochemical and Biotechnological Drugs, School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, China.
| |
Collapse
|
18
|
Lu R, Wu Y, Guo H, Zhang Z, He Y. Salidroside Protects Against Influenza A Virus-Induced Acute Lung Injury in Mice. Dose Response 2021; 19:15593258211011335. [PMID: 34017230 PMCID: PMC8114266 DOI: 10.1177/15593258211011335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 03/16/2021] [Accepted: 03/26/2021] [Indexed: 11/17/2022] Open
Abstract
Influenza A virus infections can cause acute lung injury (ALI) in humans; thus, the identification of potent antiviral agents is urgently required. Herein, the effects of salidroside on influenza A virus-induced ALI were investigated in a murine model. BALB/c mice were intranasally inoculated with H1N1 virus and treated with salidroside. The results of this study show that salidroside treatment (30 and 60 mg/kg) significantly attenuated the H1N1 virus-induced histological alterations in the lung and inhibited inflammatory cytokine production. Salidroside also decreased the wet/dry ratio, viral titers, and Toll-like receptor 4 expression in the lungs. Therefore, salidroside may represent a potential therapeutic reagent for the treatment of influenza A virus-induced ALI.
Collapse
Affiliation(s)
- Rufeng Lu
- Department of Emergency, the First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Yueguo Wu
- Institute of Materia Medica, Hangzhou Medical College, Hangzhou, China
| | - Honggang Guo
- Key Laboratory of Experimental Animal and Safety Evaluation, Hangzhou Medical College, Hangzhou, China
| | - Zhuoyi Zhang
- Department of Emergency, the First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Yuzhou He
- Department of Emergency, the First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| |
Collapse
|
19
|
Comparison of Clinical Features and Outcomes in Critically Ill Patients Hospitalized with COVID-19 versus Influenza. Ann Am Thorac Soc 2021; 18:632-640. [PMID: 33183067 PMCID: PMC8009008 DOI: 10.1513/annalsats.202007-805oc] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Rationale: No direct comparisons of clinical features, laboratory values, and outcomes between critically ill patients with coronavirus disease (COVID-19) and patients with influenza in the United States have been reported. Objectives: To evaluate the risk of mortality comparing critically ill patients with COVID-19 with patients with seasonal influenza. Methods: We retrospectively identified patients admitted to the intensive care units (ICUs) at two academic medical centers with laboratory-confirmed severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) or influenza A or B infections between January 1, 2019, and April 15, 2020. The clinical data were obtained by medical record review. All patients except one had follow-up to hospital discharge or death. We used relative risk regression adjusting for age, sex, number of comorbidities, and maximum sequential organ failure scores on Day 1 in the ICU to determine the risk of hospital mortality and organ dysfunction in patients with COVID-19 compared with patients with influenza. Results: We identified 65 critically ill patients with COVID-19 and 74 patients with influenza. The mean (±standard deviation) age in each group was 60.4 ± 15.7 and 56.8 ± 17.6 years, respectively. Patients with COVID-19 were more likely to be male, have a higher body mass index, and have higher rates of chronic kidney disease and diabetes. Of the patients with COVID-19, 37% identified as Hispanic, whereas 10% of the patients with influenza identified as Hispanic. A similar proportion of patients had fevers (∼40%) and lymphopenia (∼80%) on hospital presentation. The rates of acute kidney injury and shock requiring vasopressors were similar between the groups. Although the need for invasive mechanical ventilation was also similar in both groups, patients with COVID-19 had slower improvements in oxygenation, longer durations of mechanical ventilation, and lower rates of extubation than patients with influenza. The hospital mortality was 40% in patients with COVID-19 and 19% in patients with influenza (adjusted relative risk, 2.13; 95% confidence interval, 1.24–3.63; P = 0.006). Conclusions: The need for invasive mechanical ventilation was common in patients in the ICU for COVID-19 and influenza. Compared with those with influenza, patients in the ICU with COVID-19 had worse respiratory outcomes, including longer duration of mechanical ventilation. In addition, patients with COVID-19 were at greater risk for in-hospital mortality, independent of age, sex, comorbidities, and ICU severity of illness.
Collapse
|
20
|
Brazee PL, Morales-Nebreda L, Magnani ND, Garcia JG, Misharin AV, Ridge KM, Budinger GRS, Iwai K, Dada LA, Sznajder JI. Linear ubiquitin assembly complex regulates lung epithelial-driven responses during influenza infection. J Clin Invest 2020; 130:1301-1314. [PMID: 31714898 DOI: 10.1172/jci128368] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 11/06/2019] [Indexed: 12/25/2022] Open
Abstract
Influenza A virus (IAV) is among the most common causes of pneumonia-related death worldwide. Pulmonary epithelial cells are the primary target for viral infection and replication and respond by releasing inflammatory mediators that recruit immune cells to mount the host response. Severe lung injury and death during IAV infection result from an exuberant host inflammatory response. The linear ubiquitin assembly complex (LUBAC), composed of SHARPIN, HOIL-1L, and HOIP, is a critical regulator of NF-κB-dependent inflammation. Using mice with lung epithelial-specific deletions of HOIL-1L or HOIP in a model of IAV infection, we provided evidence that, while a reduction in the inflammatory response was beneficial, ablation of the LUBAC-dependent lung epithelial-driven response worsened lung injury and increased mortality. Moreover, we described a mechanism for the upregulation of HOIL-1L in infected and noninfected cells triggered by the activation of type I IFN receptor and mediated by IRF1, which was maladaptive and contributed to hyperinflammation. Thus, we propose that lung epithelial LUBAC acts as a molecular rheostat that could be selectively targeted to modulate the immune response in patients with severe IAV-induced pneumonia.
Collapse
Affiliation(s)
- Patricia L Brazee
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Luisa Morales-Nebreda
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Natalia D Magnani
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Joe Gn Garcia
- Department of Medicine, University of Arizona, Tucson, Arizona, USA
| | - Alexander V Misharin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Karen M Ridge
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Chicago, Illinois, USA
| | - G R Scott Budinger
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Kazuhiro Iwai
- Department of Molecular and Cellular Physiology, Graduate School of Medicine, Kyoto University, Yoshida-konoe-cho, Kyoto, Japan
| | - Laura A Dada
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Chicago, Illinois, USA
| |
Collapse
|
21
|
Fei L, Sun G, You Q. miR-642a-5p partially mediates the effects of lipopolysaccharide on human pulmonary microvascular endothelial cells via eEF2. FEBS Open Bio 2020; 10:2294-2304. [PMID: 32881411 PMCID: PMC7609801 DOI: 10.1002/2211-5463.12969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 08/08/2020] [Accepted: 08/27/2020] [Indexed: 11/29/2022] Open
Abstract
Inhalation or systemic administration of lipopolysaccharide (LPS) can induce acute pulmonary inflammation and lung injury. The pulmonary vasculature is composed of pulmonary microvascular endothelial cells (PMVECs), which form a semiselective membrane for gas exchange. The miRNA miR‐642a‐5p has previously been reported to be up‐regulated in patients with acute respiratory distress syndrome; thus, here, we examined whether this miRNA is involved in the effects of LPS on PMVECs. The levels of miR‐642a‐5p and mRNA encoding eukaryotic elongation factor 2 (eEF2) were detected by quantitative RT‐PCR. Moesin and eEF2 protein levels were tested by western blot assay. Dual‐luciferase reporter assay was used to examine the relationship between miR‐642a‐5p and eEF2. Cell viability was assessed using the 3‐(4,5‐dimethylthiazol‐2‐yl)‐2,5‐diphenyltetrazolium bromide assay, and cell permeability was analyzed using the transendothelial electrical resistance assay. We report that miR‐642a‐5p levels are significantly up‐regulated in LPS‐stimulated PMVECs, and miR‐642a‐5p contributes to LPS‐induced hyperpermeability and apoptosis of PMVECs. LPS treatment results in down‐regulation of eEF2 in PMVECs. Overexpression of eEF2, a direct target of miR‐642a‐5p, inhibited the effect of LPS on PMVECs. miR‐642a‐5p promoted LPS‐induced hyperpermeability and apoptosis by targeting eEF2. Thus, miR‐642a‐5p and eEF2 may serve as potential targets for acute lung injury/acute respiratory distress syndrome diagnosis or treatment.
Collapse
Affiliation(s)
- Liming Fei
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Gengyun Sun
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Qinghai You
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| |
Collapse
|
22
|
Brazee PL, Sznajder JI. Targeting the Linear Ubiquitin Assembly Complex to Modulate the Host Response and Improve Influenza A Virus Induced Lung Injury. Arch Bronconeumol 2020; 56:586-591. [PMID: 33994643 PMCID: PMC7489339 DOI: 10.1016/j.arbr.2020.04.008] [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: 03/05/2020] [Accepted: 04/15/2020] [Indexed: 12/01/2022]
Abstract
Influenza virus infection is characterized by symptoms ranging from mild congestion and body aches to severe pulmonary edema and respiratory failure. While the majority of those exposed have minor symptoms and recover with little morbidity, an estimated 500,000 people succumb to IAV-related complications each year worldwide. In these severe cases, an exaggerated inflammatory response, known as "cytokine storm", occurs which results in damage to the respiratory epithelial barrier and development of acute respiratory distress syndrome (ARDS). Data from retrospective human studies as well as experimental animal models of influenza virus infection highlight the fine line between an excessive and an inadequate immune response, where the host response must balance viral clearance with exuberant inflammation. Current pharmacological modulators of inflammation, including corticosteroids and statins, have not been successful in improving outcomes during influenza virus infection. We have reported that the amplitude of the inflammatory response is regulated by Linear Ubiquitin Assembly Complex (LUBAC) activity and that dampening of LUBAC activity is protective during severe influenza virus infection. Therapeutic modulation of LUBAC activity may be crucial to improve outcomes during severe influenza virus infection, as it functions as a molecular rheostat of the host response. Here we review the evidence for modulating inflammation to ameliorate influenza virus infection-induced lung injury, data on current anti-inflammatory strategies, and potential new avenues to target viral inflammation and improve outcomes.
Collapse
Affiliation(s)
- Patricia L Brazee
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, United States
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, United States
| |
Collapse
|
23
|
Degani G, Altomare A, Digiovanni S, Arosio B, Fritz G, Raucci A, Aldini G, Popolo L. Prothrombin is a binding partner of the human receptor of advanced glycation end products. J Biol Chem 2020; 295:12498-12511. [PMID: 32665403 DOI: 10.1074/jbc.ra120.013692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 07/11/2020] [Indexed: 01/02/2023] Open
Abstract
The receptor for advanced glycation end products (RAGE) plays a key role in mammal physiology and in the etiology and progression of inflammatory and oxidative stress-based diseases. In adults, RAGE expression is normally high only in the lung where the protein concentrates in the basal membrane of alveolar Type I epithelial cells. In diseases, RAGE levels increase in the affected tissues and sustain chronic inflammation. RAGE exists as a membrane glycoprotein with an ectodomain, a transmembrane helix, and a short carboxyl-terminal tail, or as a soluble ectodomain that acts as a decoy receptor (sRAGE). VC1 domain is responsible for binding to the majority of RAGE ligands including advanced glycation end products (AGEs), S100 proteins, and HMGB1. To ascertain whether other ligands exist, we analyzed by MS the material pulled down by VC1 from human plasma. Twenty of 295 identified proteins were selected and associated to coagulation and complement processes and to extracellular matrix. Four of them contained a γ-carboxyl glutamic acid (Gla) domain, a calcium-binding module, and prothrombin (PT) was the most abundant. Using MicroScale thermophoresis, we quantified the interaction of PT with VC1 and sRAGE in the absence or presence of calcium that acted as a competitor. PT devoid of the Gla domain (PT des-Gla) did not bind to sRAGE, providing further evidence that the Gla domain is critical for the interaction. Finally, the presence of VC1 delayed plasma clotting in a dose-dependent manner. We propose that RAGE is involved in modulating blood coagulation presumably in conditions of lung injury.
Collapse
Affiliation(s)
- Genny Degani
- Department of Biosciences, University of Milan, Milan, Italy
| | | | | | - Beatrice Arosio
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.,Geriatric Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico and University of Milan, Via Pace 9, Milan, Italy
| | - Guenter Fritz
- Institute of Microbiology, University of Hohenheim, Stuttgart, Germany
| | - Angela Raucci
- Experimental Cardio-oncology and Cardiovascular Aging Unit, Centro Cardiologico Monzino-IRCCS, Via Carlo Parea, 4, Milan, Italy
| | - Giancarlo Aldini
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
| | - Laura Popolo
- Department of Biosciences, University of Milan, Milan, Italy
| |
Collapse
|
24
|
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.
Collapse
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
| |
Collapse
|
25
|
Brazee PL, Sznajder JI. Targeting the Linear Ubiquitin Assembly Complex to Modulate the Host Response and Improve Influenza A Virus Induced Lung Injury. Arch Bronconeumol 2020; 56:586-591. [PMID: 32405132 PMCID: PMC7218391 DOI: 10.1016/j.arbres.2020.04.019] [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: 03/05/2020] [Accepted: 04/15/2020] [Indexed: 11/17/2022]
Abstract
Influenza virus infection is characterized by symptoms ranging from mild congestion and body aches to severe pulmonary edema and respiratory failure. While the majority of those exposed have minor symptoms and recover with little morbidity, an estimated 500,000 people succumb to IAV-related complications each year worldwide. In these severe cases, an exaggerated inflammatory response, known as "cytokine storm", occurs which results in damage to the respiratory epithelial barrier and development of acute respiratory distress syndrome (ARDS). Data from retrospective human studies as well as experimental animal models of influenza virus infection highlight the fine line between an excessive and an inadequate immune response, where the host response must balance viral clearance with exuberant inflammation. Current pharmacological modulators of inflammation, including corticosteroids and statins, have not been successful in improving outcomes during influenza virus infection. We have reported that the amplitude of the inflammatory response is regulated by Linear Ubiquitin Assembly Complex (LUBAC) activity and that dampening of LUBAC activity is protective during severe influenza virus infection. Therapeutic modulation of LUBAC activity may be crucial to improve outcomes during severe influenza virus infection, as it functions as a molecular rheostat of the host response. Here we review the evidence for modulating inflammation to ameliorate influenza virus infection-induced lung injury, data on current anti-inflammatory strategies, and potential new avenues to target viral inflammation and improve outcomes.
Collapse
Affiliation(s)
- Patricia L Brazee
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, United States
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, United States.
| |
Collapse
|
26
|
Ko IG, Hwang JJ, Chang BS, Kim SH, Jin JJ, Hwang L, Kim CJ, Choi CW. Polydeoxyribonucleotide ameliorates lipopolysaccharide-induced acute lung injury via modulation of the MAPK/NF-κB signaling pathway in rats. Int Immunopharmacol 2020; 83:106444. [PMID: 32234670 DOI: 10.1016/j.intimp.2020.106444] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/07/2020] [Accepted: 03/23/2020] [Indexed: 11/17/2022]
Abstract
Acute lung injury (ALI) is characterized by disruption of the alveolar-capillary membrane resulting in pulmonary edema and accumulation of associated proteinaceous alveolar exudate. Initiation of ALI upregulates tumor necrosis factor-α (TNF-α), which activates nuclear factor-kappa B (NF-κB) and mitogen-activated protein kinases (MAPK) that induce various pro-inflammatory mediators. Polydexyribonucleotide (PDRN) is an adenosine A2A receptor agonist that exerts anti-inflammatory effects by suppressing the production of pro-inflammatory cytokines and apoptosis. We investigated the therapeutic efficiency of PDRN on ALI induced by lipopolysaccharide (LPS) in rats. ALI was induced by intratracheal instillation of LPS (5 mg/kg) in 200 μL saline. The PDRN treatment group received a single intraperitoneal injection of 500 μL saline including PDRN (8 mg/kg) 1 h after ALI induction. To confirm the involvement of the adenosine A2A receptor in PDRN, 8 mg/kg 7-dimethyl-1-propargylxanthine (DMPX) was applied with PDRN treatment. Rats were then sacrificed 12 h after PDRN and DMPX treatments. Intratracheal administration of LPS caused lung tissue damage and significantly increased the lung injury scores and levels of pro-inflammatory cytokines, and apoptotic factors. In addition, MAPK/NF-κB signaling factors were increased by ALI initiation. PDRN treatment potently suppressed expressions of MAPK/NF-κB signaling factors compared to the PDRN + DMPX co-treated group. These alterations led to a reduction of pro-inflammatory cytokines, apoptotic factors, and NF-κB and MAPK signaling, which promoted the recovery of damaged lung tissue. PDRN therapy demonstrated therapeutic effects for LPS-induced ALI compared to the non-treated and DMPX-treated groups. Therefore, PDRN may be used as a therapy for initial treatment of ALI.
Collapse
Affiliation(s)
- Il-Gyu Ko
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jae Joon Hwang
- Department of Pulmonary and Critical Care Medicine, Kyung Hee University Hospital at Gangdong, Seoul 05278, Republic of Korea
| | - Bok Soon Chang
- Department of Pulmonary and Critical Care Medicine, Kyung Hee University Hospital at Gangdong, Seoul 05278, Republic of Korea
| | - Sang-Hoon Kim
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jun-Jang Jin
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Lakkyong Hwang
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Chang-Ju Kim
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Cheon Woong Choi
- Department of Pulmonary and Critical Care Medicine, Kyung Hee University Hospital at Gangdong, Seoul 05278, Republic of Korea.
| |
Collapse
|
27
|
Erlotinib Protects LPS-Induced Acute Lung Injury in Mice by Inhibiting EGFR/TLR4 Signaling Pathway. Shock 2020; 51:131-138. [PMID: 29438224 DOI: 10.1097/shk.0000000000001124] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Epidermal growth factor receptor (EGFR) has been reported to initiate the inflammatory response, but its activation in lipopolysaccharide (LPS)-induced murine model of acute lung injury (ALI) remains unclear. In this study, we investigated the role of EGFR in the LPS-induced murine model of ALI and explored whether its inhibitor erlotinib could affect the progression of lung injury. We first detected the phosphorylated EGFR (p-EGFR)/EGFR ratio at different time points after LPS stimulation, and then different concentrations of erlotinib were used to treat mice at 1 h before LPS stimulation and collected samples at the time point of the highest p-EGFR/EGFR ratio. Lung injury indicators were detected and compared among groups. EGFR and toll-like receptor 4 (TLR4)/nuclear factor kappa B (NF-κB) signal transduction factors, including p-EGFR, p-AKT, p-ERK1/2, p-p65, tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β), were measured with western blot. We found that the mice challenged with LPS suffered from the most serious lung injury at 24 h after LPS stimulation when the p-EGFR/EGFR ratio was relatively the highest. Erlotinib significantly diminished LPS-induced exudation of total cells, neutrophils, and proteins in BALF. Both the ELISA and western blot results showed that erlotinib attenuated the expression of TNF-α and IL-1β in LPS-induced ALI in mice. Inhibition of EGFR by erlotinib downregulated the expression of p-p65 protein level as well as blocked the activation of AKT and ERK1/2 signaling pathway. Taken together, erlotinib alleviated the LPS-induced ALI in a dose-dependent manner by suppressing EGFR activation and downregulating the NF-κB-mediated secretion of proinflammatory cytokines.
Collapse
|
28
|
Viola H, Chang J, Grunwell JR, Hecker L, Tirouvanziam R, Grotberg JB, Takayama S. Microphysiological systems modeling acute respiratory distress syndrome that capture mechanical force-induced injury-inflammation-repair. APL Bioeng 2019; 3:041503. [PMID: 31768486 PMCID: PMC6874511 DOI: 10.1063/1.5111549] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 11/08/2019] [Indexed: 12/14/2022] Open
Abstract
Complex in vitro models of the tissue microenvironment, termed microphysiological systems, have enormous potential to transform the process of discovering drugs and disease mechanisms. Such a paradigm shift is urgently needed in acute respiratory distress syndrome (ARDS), an acute lung condition with no successful therapies and a 40% mortality rate. Here, we consider how microphysiological systems could improve understanding of biological mechanisms driving ARDS and ultimately improve the success of therapies in clinical trials. We first discuss how microphysiological systems could explain the biological mechanisms underlying the segregation of ARDS patients into two clinically distinct phenotypes. Then, we contend that ARDS-mimetic microphysiological systems should recapitulate three critical aspects of the distal airway microenvironment, namely, mechanical force, inflammation, and fibrosis, and we review models that incorporate each of these aspects. Finally, we recognize the substantial challenges associated with combining inflammation, fibrosis, and/or mechanical force in microphysiological systems. Nevertheless, complex in vitro models are a novel paradigm for studying ARDS, and they could ultimately improve patient care.
Collapse
Affiliation(s)
| | - Jonathan Chang
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory School of Medicine, Atlanta, Georgia 30332, USA
| | - Jocelyn R. Grunwell
- Department of Pediatrics, Division of Critical Care Medicine, Children's Healthcare of Atlanta at Egleston, Emory University School of Medicine, Atlanta, Georgia 30322, USA
| | - Louise Hecker
- Division of Pulmonary, Allergy and Critical Care and Sleep Medicine, University of Arizona, Tucson, Arizona 85724, USA and Southern Arizona Veterans Affairs Health Care System, Tucson, Arizona 85723, USA
| | - Rabindra Tirouvanziam
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia 30322, USA and Center for CF and Airways Disease Research, Children's Healthcare of Atlanta, Atlanta, Georgia 30322, USA
| | - James B. Grotberg
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
| | | |
Collapse
|
29
|
Zhai Y, Huang XL, Ma HJ, Zhou XH, Zhou JL, Fan YM. Sulfur dioxide reduces lipopolysaccharide-induced acute lung injury in rats. Cent Eur J Immunol 2019; 44:226-236. [PMID: 31933533 PMCID: PMC6953369 DOI: 10.5114/ceji.2019.89593] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 04/19/2017] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Recent studies suggested that sulfur dioxide (SO2) can be produced endogenously by pulmonary vessels and attenuate acute lung injury (ALI) with vasorelaxant effects. This study was conducted to determine whether SO2 can inhibit lung inflammation and relax pulmonary arteries via inhibition of the mitogen-activated protein kinase (MAPK) pathway. MATERIAL AND METHODS Forty-eight adult male Sprague Dawley rats (250~300 g) were randomly divided into six treatment groups: control (n = 8), control + SO2 (n = 8), control + L-aspartic acid-β-hydroxamate (HDX) (n = 8), LPS (n = 8), LPS + SO2 (n = 8) and LPS + HDX (n = 8). RESULTS Six hours after LPS treatment, rats exhibited elevated pulmonary artery hypertension (PAH), marked pulmonary structure injury with elevated pulmonary myeloperoxidase (MPO) activity and increased expression of intercellular adhesion molecule 1 (ICAM-1) and CD11b, along with decreased pulmonary SO2 production and reduced pulmonary aspartate aminotransferase (AAT) activity. Pretreatment with SO2 saline solution significantly reduced, while HDX (AAT inhibitor) aggravated, the pathogenesis of LPS-induced ALI. Moreover, SO2 saline solution significantly down-regulated expression of Raf-1, MEK-1 and phosphorylated ERK (p-ERK). It also prevented pulmonary hypertension in association with an up-regulated SO2/AAT pathway. However, HDX advanced pulmonary hypertension and inflammatory responses in the lung were associated with a down-regulated SO2/AAT pathway. CONCLUSIONS Our results suggest that SO2 markedly relieved inflammatory responses, in association with Raf-1, MEK-1 and p-ERK during ALI induced by LPS. The down-regulation of the SO2/AAT pathway may be involved in the mechanism(s) of LPS-induced lung injury.
Collapse
Affiliation(s)
- Yu Zhai
- Department of Basic Medicine, Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Xin-Li Huang
- Department of Pathophysiology, Hebei Medical University, Shijiazhuang, China
| | - Hui-Jie Ma
- Department of Physiology, Hebei Medical University, Shijiazhuang, China
| | - Xiao-Hong Zhou
- Department of Basic Medicine, Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Jun-Lin Zhou
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Ya-Min Fan
- Department of Pathophysiology, Hebei Medical University, Shijiazhuang, China
| |
Collapse
|
30
|
Challenges and perspectives in porcine model of acute lung injury using oleic acid. Pulm Pharmacol Ther 2019; 59:101837. [PMID: 31491506 DOI: 10.1016/j.pupt.2019.101837] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 08/16/2019] [Accepted: 09/02/2019] [Indexed: 11/23/2022]
Abstract
The oleic acid (OA) models of lung injury try to simulate the findings of human Acute Respiratory Distress Syndrome (ARDS). However, these models are difficult to replicate because they vary in terms of animals species, OA doses, time for establishment of lung injury, different observation periods and settings of mechanical ventilation. The objective of this study was to evaluate a protocol of administration of OA in lung injury model, challenges in its development and its effects on respiratory mechanics, hemodynamic changes, histology, gas exchange and mortality. We then submitted ten Large White pigs to acute lung injury through intravenous infusion of acid oleic in the pulmonary artery. The mortality of the model was 50%, due to an intense hemodynamic instability during OA administration, even with early use of vasoactive drugs. Three animals required additional doses of OA to achieve criteria for acute lung injury. Histology showed findings consistent with acute lung injury. However, more pulmonary edema was observed in lower segments than in upper segments of both lungs (p = 0.01). IL-6 and IL-8 were significantly increased compared to normal lungs (p < 0.05), and IL-6 showed higher levels in upper segments compared to lower segments (p = 0.03). Positive cells for Caspase 3 were present in all samples, localized mainly in respiratory epithelial cells and macrophages. In conclusion, this model shows histological findings of acute lung injury and inflammatory response similar to those of clinical ARDS, it presents high mortality, inconsistent reproducibility and hardly controlled hemodynamic instability.
Collapse
|
31
|
Pinheiro AJMCR, Mendes ARS, Neves MDFDJ, Prado CM, Bittencourt-Mernak MI, Santana FPR, Lago JHG, de Sá JC, da Rocha CQ, de Sousa EM, Fontes VC, Grisoto MAG, Falcai A, Lima-Neto LG. Galloyl -Hexahydroxydiphenoyl (HHDP)-Glucose Isolated From Punica granatum L. Leaves Protects Against Lipopolysaccharide (LPS)-Induced Acute Lung Injury in BALB/c Mice. Front Immunol 2019; 10:1978. [PMID: 31481965 PMCID: PMC6710369 DOI: 10.3389/fimmu.2019.01978] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 08/05/2019] [Indexed: 12/14/2022] Open
Abstract
The hydroalcoholic extract and ethyl acetate fraction of Punica granatum leaves have been known to exhibit anti-inflammatory activities. In this study, we investigated the therapeutic effects of galloyl-hexahydroxydiphenoyl (HHDP)-glucose isolated from pomegranate leaves on lipopolysaccharide (LPS)-induced acute lung injury (ALI) in mice. Male BALB/c mice were treated with different doses of galloyl-HHDP-glucose (5, 50, and 100 mg/Kg) or dexamethasone at 5 mg/Kg (per os) 6 h after intra-tracheal instillation of LPS. Vehicle-treated mice were used as controls. Twenty-four hours after LPS challenge, bronchoalveolar lavage fluid (BALF), and lung samples were collected for analyses. They were evaluated by monitoring the expression of NF-κB, JNK, and cytokine genes and proteins, as well as cell migration and lung function. All doses of galloyl-HHDP-glucose inhibited LPS-induced JNK and NF-κB activation. Likewise, the galloyl-HHDP-glucose-treated animals presented reduced expression of the TNF-α, IL-6, and IL-1β genes in the lungs and reduced TNF-α, IL-6, IL-1β, and IL-8 protein levels when compared with the vehicle-treated LPS-challenged mice. In addition, the ALI mice treated with galloyl-HHDP-glucose also presented reduced lung inflammatory cell accumulation, especially that of neutrophils, in their BALF and lungs. In addition, galloyl-HHDP-glucose treatment markedly ameliorated the LPS-induced pulmonary mechanism complications and attenuated weight loss. Overall, we showed for the first time that galloyl-HHDP-glucose protects against ALI, and may be useful for treating ALI and other inflammatory disorders.
Collapse
Affiliation(s)
- Aruanã Joaquim Matheus Costa Rodrigues Pinheiro
- Programa de Pós-Graduação, Universidade CEUMA, São Luís, Brazil.,Programa de Pós-Graduação da Rede BIONORTE, Universidade Estadual do Maranhão, São Luís, Brazil.,Departamento do Curso de Farmácia, Faculdade Pitágoras, São Luis, Brazil
| | | | | | - Carla Máximo Prado
- Department of Biosciences, Federal University of São Paulo, Santos, Brazil.,Department of Medicine, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Márcia Isabel Bittencourt-Mernak
- Department of Biosciences, Federal University of São Paulo, Santos, Brazil.,Department of Medicine, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Fernanda Paula Roncon Santana
- Department of Biosciences, Federal University of São Paulo, Santos, Brazil.,Department of Medicine, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - João Henrique G Lago
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil
| | | | | | - Eduardo Martins de Sousa
- Programa de Pós-Graduação, Universidade CEUMA, São Luís, Brazil.,Programa de Pós-Graduação da Rede BIONORTE, Universidade Estadual do Maranhão, São Luís, Brazil
| | | | | | - Angela Falcai
- Programa de Pós-graduação, Mestrado em Meio Ambiente, Universidade CEUMA, São Luís, Brazil
| | - Lidio Gonçalves Lima-Neto
- Programa de Pós-Graduação, Universidade CEUMA, São Luís, Brazil.,Programa de Pós-Graduação da Rede BIONORTE, Universidade Estadual do Maranhão, São Luís, Brazil.,Departamento do Curso de Medicina, Universidade CEUMA, São Luís, Brazil
| |
Collapse
|
32
|
Babu FS, LaPorte HM, Nassoiy SP, Majetschak M. Chemokine (C-X-C motif) receptor 4 regulates lung endothelial barrier permeability during resuscitation from hemorrhagic shock. Physiol Res 2019; 68:675-679. [PMID: 31177801 DOI: 10.33549/physiolres.934105] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Chemokine (C-X-C motif) receptor 4 (CXCR4) agonists have been shown to protect lung endothelial barrier function in vitro. In vivo effects of CXCR4 modulation on lung endothelial permeability are unknown. Here we tested the effects of the CXCR4 agonist ubiquitin and the antagonist AMD3100 on lung vascular permeability and cytokine concentrations in a rat hemorrhage model. Animals were hemorrhaged (mean arterial blood pressure 30 mmHg for 30 min), treated with vehicle, ubiquitin (0.7 and 3.5 µmol/kg) or AMD3100 (3.5 µmol/kg), and resuscitated with crystalloids. Evans blue extravasation was employed to quantify lung vascular permeability. Ubiquitin dose-dependently reduced Evans blue extravasation into the lung. AMD3100 increased Evans blue extravasation. With AMD3100, TNFalpha levels in lung homogenates were increased; while TNFalpha levels were lower with ubiquitin, these differences did not reach statistical significance. Our findings suggest that CXCR4 regulates lung vascular permeability and further point towards CXCR4 as a drug target to confer lung protection during resuscitation from traumatic-hemorrhagic shock.
Collapse
Affiliation(s)
- F S Babu
- Department of Surgery, Burn and Shock Trauma Research Institute, Loyola University Chicago, Stritch School of Medicine, Maywood, IL, USA, and Department of Surgery, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA,
| | | | | | | |
Collapse
|
33
|
Liu H, Gu C, Liu M, Liu G, Wang D, Liu X, Wang Y. Ventilator-induced lung injury is alleviated by inhibiting NLRP3 inflammasome activation. Mol Immunol 2019; 111:1-10. [PMID: 30952009 DOI: 10.1016/j.molimm.2019.03.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 02/28/2019] [Accepted: 03/26/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Mechanical ventilation (MV) is frequently used but can aggravate or cause lung injury, known as ventilator-induced lung injury (VILI). However, the mechanisms are unclear. The NLR family pyrin domain containing 3 (NLRP3) inflammasome is a vital component of innate immunity and is closely related to VILI. METHODS Mouse lung epithelial (MLE-12) cells were transfected with NLRP3 small interfering RNA (siRNA) or scramble siRNA (sc siRNA) and subjected to 20% cyclic stretch (CS). Wild-type C57BL/6 mice were injected with a liquid complex of NLRP3 siRNA/sc siRNA-Lipofectamine 2000 through the fundus venous plexus before mechanical ventilation. Western blots, immunoprecipitation, ELISAs, flow cytometry, immunofluorescence, and hematoxylin-eosin staining were used to assess the effects of the NLRP3 inflammasome on VILI and the mechanisms of those effects. RESULTS CS activated the NLRP3 inflammasome by activating NIMA-related kinase 7 (NEK7). NLRP3 depletion inhibited NLRP3 inflammasome activation; alleviated the degradation of cell junction proteins, including p120-catenin (p120) and occludin; ameliorated the colocalization of p120 and E-cadherin; and mitigated the decrease in mitochondrial membrane potential caused by mechanical stretch. Furthermore, after NLRP3 depletion, VILI was attenuated by decreasing IL-1β secretion and pulmonary edema. CONCLUSIONS Inhibiting NLRP3 inflammasome activation ameliorated VILI, suggesting a potential therapeutic target for the clinical treatment of VILI.
Collapse
Affiliation(s)
- Huan Liu
- Department of Anesthesiology and Perioperative Medicine, Shandong Provincial Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, Shandong Province, China
| | - Changping Gu
- Department of Anesthesiology and Perioperative Medicine, Shandong Provincial Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, Shandong Province, China
| | - Mengjie Liu
- Department of Anesthesiology and Perioperative Medicine, Shandong Provincial Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, Shandong Province, China
| | - Ge Liu
- Department of Anesthesiology and Perioperative Medicine, Shandong Provincial Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, Shandong Province, China
| | - Dong Wang
- Department of Anesthesiology and Perioperative Medicine, Shandong Provincial Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, Shandong Province, China
| | - Xiaobin Liu
- Department of Anesthesiology and Perioperative Medicine, Shandong Provincial Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, Shandong Province, China
| | - Yuelan Wang
- Department of Anesthesiology and Perioperative Medicine, Shandong Provincial Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, Shandong Province, China.
| |
Collapse
|
34
|
Pathophysiology of Acute Illness and Injury. OPERATIVE TECHNIQUES AND RECENT ADVANCES IN ACUTE CARE AND EMERGENCY SURGERY 2019. [PMCID: PMC7122041 DOI: 10.1007/978-3-319-95114-0_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pathophysiology of acute illness and injury recognizes three main effectors: infection, trauma, and ischemia-reperfusion injury. Each of them can act by itself or in combination with the other two in developing a systemic inflammatory reaction syndrome (SIRS) that is a generalized reaction to the morbid event. The time course of SIRS is variable and influenced by the number and severity of subsequent insults (e.g., reparative surgery, acquired hospital infections). It occurs simultaneously with a complex of counter-regulatory mechanisms (compensatory anti-inflammatory response syndrome, CARS) that limit the aggressive effects of SIRS. In adjunct, a progressive dysfunction of the acquired (lymphocytes) immune system develops with increased risk for immunoparalysis and associated infectious complications. Both humoral and cellular effectors participate to the development of SIRS and CARS. The most important humoral mediators are pro-inflammatory (IL-1β, IL-6, IL-8, IL-12) and anti-inflammatory (IL-4, IL-10) cytokines and chemokines, complement, leukotrienes, and PAF. Effector cells include neutrophils, monocytes, macrophages, lymphocytes, and endothelial cells. The endothelium is a key factor for production of remote organ damage as it exerts potent chemo-attracting effects on inflammatory cells, allows for leukocyte trafficking into tissues and organs, and promotes further inflammation by cytokines release. Moreover, the loss of vasoregulatory properties and the increased permeability contribute to the development of hypotension and tissue edema. Finally, the disseminated activation of the coagulation cascade causes the widespread deposition of microthrombi with resulting maldistribution of capillary blood flow and ultimately hypoxic cellular damage. This mechanism together with increased vascular permeability and vasodilation is responsible for the development of the multiple organ dysfunction syndrome (MODS).
Collapse
|
35
|
Passmore MR, Byrne L, Obonyo NG, See Hoe LE, Boon AC, Diab SD, Dunster KR, Bisht K, Tung JP, Fauzi MH, Narula M, Pedersen SE, Esguerra-Lallen A, Simonova G, Sultana A, Anstey CM, Shekar K, Maitland K, Suen JY, Fraser JF. Inflammation and lung injury in an ovine model of fluid resuscitated endotoxemic shock. Respir Res 2018; 19:231. [PMID: 30466423 PMCID: PMC6249903 DOI: 10.1186/s12931-018-0935-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 11/12/2018] [Indexed: 12/13/2022] Open
Abstract
Background Sepsis is a multi-system syndrome that remains the leading cause of mortality and critical illness worldwide, with hemodynamic support being one of the cornerstones of the acute management of sepsis. We used an ovine model of endotoxemic shock to determine if 0.9% saline resuscitation contributes to lung inflammation and injury in acute respiratory distress syndrome, which is a common complication of sepsis, and investigated the potential role of matrix metalloproteinases in this process. Methods Endotoxemic shock was induced in sheep by administration of an escalating dose of lipopolysaccharide, after which they subsequently received either no fluid bolus resuscitation or a 0.9% saline bolus. Lung tissue, bronchoalveolar fluid (BAL) and plasma were analysed by real-time PCR, ELISA, flow cytometry and immunohistochemical staining to assess inflammatory cells, cytokines, hyaluronan and matrix metalloproteinases. Results Endotoxemia was associated with decreased serum albumin and total protein levels, with activated neutrophils, while the glycocalyx glycosaminoglycan hyaluronan was significantly increased in BAL. Quantitative real-time PCR studies showed higher expression of IL-6 and IL-8 with saline resuscitation but no difference in matrix metalloproteinase expression. BAL and tissue homogenate levels of IL-6, IL-8 and IL-1β were elevated. Conclusions This data shows that the inflammatory response is enhanced when a host with endotoxemia is resuscitated with saline, with a comparatively higher release of inflammatory cytokines and endothelial/glycocalyx damage, but no change in matrix metalloproteinase levels.
Collapse
Affiliation(s)
- Margaret R Passmore
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia. .,University of Queensland, Brisbane, Australia.
| | - Liam Byrne
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia.,Australian National University, Canberra, Australia
| | - Nchafatso G Obonyo
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia.,KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Louise E See Hoe
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia.,University of Queensland, Brisbane, Australia
| | - Ai-Ching Boon
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia.,University of Queensland, Brisbane, Australia
| | - Sara D Diab
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia
| | - Kimble R Dunster
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia.,Queensland University of Technology, Brisbane, Australia
| | - Kavita Bisht
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia
| | - John-Paul Tung
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia.,Research and Development, Australian Red Cross Blood Service, Brisbane, Australia
| | - Mohd H Fauzi
- Department of Emergency Medicine, Universiti Sains Malaysia Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Monica Narula
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia.,University of Queensland, Brisbane, Australia
| | - Sanne E Pedersen
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia
| | - Arlanna Esguerra-Lallen
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia
| | - Gabriela Simonova
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia.,University of Queensland, Brisbane, Australia.,Research and Development, Australian Red Cross Blood Service, Brisbane, Australia
| | - Annette Sultana
- Research and Development, Australian Red Cross Blood Service, Brisbane, Australia
| | - Chris M Anstey
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia.,Sunshine Coast University Hospital Intensive Care, Birtinya, Australia
| | - Kiran Shekar
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia
| | - Kathryn Maitland
- KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya.,Wellcome Trust Centre for Clinical Tropical Medicine and Department of Paediatrics, Faculty of Medicine, Imperial College, London, UK
| | - Jacky Y Suen
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia.,University of Queensland, Brisbane, Australia
| | - John F Fraser
- Critical Care Research Group, Level 3, Clinical Sciences Building, The Prince Charles Hospital, Rode Rd, Brisbane, Australia.,University of Queensland, Brisbane, Australia
| |
Collapse
|
36
|
Gao P, Zhao Z, Zhang C, Wang C, Long K, Guo L, Li B. The therapeutic effects of traditional Chinese medicine Fusu agent in LPS-induced acute lung injury model rats. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:3867-3878. [PMID: 30518997 PMCID: PMC6239118 DOI: 10.2147/dddt.s181798] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Purpose Acute lung injury (ALI) is a common and fatal oxidative stress in the lung, mainly induced by endothelial injury and capillary leakage. In our previous study, “Fusu agent”, a traditional Chinese medicine, was found to exert preventive effect on endothelial damage in lipopoly-saccharide (LPS)-induced ALI model rats partially via inhibiting heparanase1 (HPA1) activation and inhibiting the inflammatory factors. However, it is still unknown whether Fusu agent exerts its therapeutic effect in LPS-induced ALI model rats and its potential mechanism. Materials and methods Rats were injected with LPS (3 mg/kg, intraperitoneally) to induced ALI, and the prepared Fusu agent was given (2, 4 or 6 g/kg) 2 hours after LPS challenge. Twenty-four or 48 hours after Fusu agent administration, the biochemical changes in the plasma and lung tissues and the morphological/histological changes in the lung associated with inflammation and injury were evaluated. Human umbilical vein endothelial cells (HUVECs) were employed to confirm the therapeutic effects of Fusu agent and investigate its mechanisms, that is, affecting ROS accumulation, mitochondrial transmembrane potential (MTP) maintenance and decreasing the expression levels of HPA1. Results Administration of Fusu agent obviously improved the lung injury and recovered vascular endothelium loss and injury. CD31 signal, which is a specific marker for endothelial vascular lesions, was decreased after Fusu agent treatment in LPS-induced ALI model rats, indicating its therapeutic effect against endothelial surface layer injury. Meanwhile, Fusu agent also decreased HPA1 expression and inflammatory responses. In vitro, Fusu agent-medicated serum decreased injury and cell death induced by LPS in HUVECs by stabilizing MTP and decreasing the leakage of lactate dehydrogenase. Consistently, Fusu agent-medicated serum downregulated HPA1 induced by LPS stimulation. Conclusion These findings suggest that Fusu agent exerts its therapeutic effect in both LPS-induced ALI model rats and HUVECs potentially via suppressing HPA1 expression, and thus exerts prosurvival effect via maintaining MTP and attenuating cell injury.
Collapse
Affiliation(s)
- Peiyang Gao
- Intensive Care Unit, The Teaching Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ziyi Zhao
- Central Laboratory, The Teaching Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Chuantao Zhang
- Intensive Care Unit, The Teaching Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Chunxia Wang
- Intensive Care Unit, The Teaching Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Kunlan Long
- Intensive Care Unit, The Teaching Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Liuxue Guo
- Intensive Care Unit, The Teaching Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Baixue Li
- College of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China,
| |
Collapse
|
37
|
Mao M, Hao L, Wang Y, Liu QQ. Transplantation of Endothelial Progenitor Cells Attenuates Lipopolysaccharide-Induced Lung Injury via Inhibiting the Inflammatory Secretion of Neutrophils in Rats. Am J Med Sci 2018; 357:49-56. [PMID: 30611320 DOI: 10.1016/j.amjms.2018.10.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 10/21/2018] [Accepted: 10/26/2018] [Indexed: 10/27/2022]
Abstract
BACKGROUND Endothelial progenitor cells (EPCs) are special types of stem cells and are a potential novel therapeutic approach in acute lung injury (ALI). Transplantation of EPCs can ameliorate the inflammatory state by reducing adhesion and exudation of inflammatory cells. However, the mechanism underlying the effect of EPCs on inflammatory response modulation remains unclear. The aim of the present study was to investigate the effect of EPCs on the modulation of neutrophils in vitro and in vivo. MATERIALS AND METHODS EPCs were cocultured with neutrophils after lipopolysaccharide stimulation in vitro or transplanted into ALI rats, and neutrophil inflammatory mediators including tumor necrosis factor-α, interleukin-1β, neutrophil elastase, myeloperoxidase and matrix metalloproteinases-9 were detected by enzyme-linked immunosorbent assay, an myeloperoxidase detection kits, reverse transcription-polymerase chain reaction and western blotting. RESULTS The results showed that EPCs significantly downregulated the expression of inflammatory mediators when cocultured with neutrophils in vitro or in vivo. CONCLUSIONS These findings demonstrated that EPCs contributed to lung injury in ALI rats by downregulating neutrophil inflammatory mediators.
Collapse
Affiliation(s)
- Mei Mao
- Department of Geriatrics, No 958 Hospital of PLA, Chongqing, China.
| | - Lei Hao
- Department of Neurology, The Fifth People's Hospital of Chongqing, Chongqing, China
| | - Yi Wang
- Department of Respiratory Medicine, the Sixth People's Hospital of Ji'nan City Affiliated to Jining Medical College, Jinan, China
| | - Qiu-Qian Liu
- Department of Infection Prevention and Control, No.958 Hospital of PLA, Chongqing, China
| |
Collapse
|
38
|
Xie W, Lu Q, Wang K, Lu J, Gu X, Zhu D, Liu F, Guo Z. miR-34b-5p inhibition attenuates lung inflammation and apoptosis in an LPS-induced acute lung injury mouse model by targeting progranulin. J Cell Physiol 2018; 233:6615-6631. [PMID: 29150939 PMCID: PMC6001482 DOI: 10.1002/jcp.26274] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Accepted: 11/14/2017] [Indexed: 12/14/2022]
Abstract
Inflammation and apoptosis play important roles in the initiation and progression of acute lung injury (ALI). Our previous study has shown that progranulin (PGRN) exerts lung protective effects during LPS-induced ALI. Here, we have investigated the potential roles of PGRN-targeting microRNAs (miRNAs) in regulating inflammation and apoptosis in ALI and have highlighted the important role of PGRN. LPS-induced lung injury and the protective roles of PGRN in ALI were first confirmed. The function of miR-34b-5p in ALI was determined by transfection of a miR-34b-5p mimic or inhibitor in intro and in vivo. The PGRN level gradually increased and subsequently significantly decreased, reaching its lowest value by 24 hr; PGRN was still elevated compared to the control. The change was accompanied by a release of inflammatory mediators and accumulation of inflammatory cells in the lungs. Using bioinformatics analysis and RT-PCR, we demonstrated that, among 12 putative miRNAs, the kinetics of the miR-34b-5p levels were closely associated with PGRN expression in the lung homogenates. The gain- and loss-of-function analysis, dual-luciferase reporter assays, and rescue experiments confirmed that PGRN was the functional target of miR-34b-5p. Intravenous injection of miR-34b-5p antagomir in vivo significantly inhibited miR-34b-5p up-regulation, reduced inflammatory cytokine release, decreased alveolar epithelial cell apoptosis, attenuated lung inflammation, and improved survival by targeting PGRN during ALI. miR-34b-5p knockdown attenuates lung inflammation and apoptosis in an LPS-induced ALI mouse model by targeting PGRN. This study shows that miR-34b-5p and PGRN may be potential targets for ALI treatments.
Collapse
Affiliation(s)
- Wang Xie
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Qingchun Lu
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Kailing Wang
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Jingjing Lu
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Xia Gu
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Dongyi Zhu
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Fanglei Liu
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| | - Zhongliang Guo
- Department of Respiratory MedicineShanghai East HospitalTongji University School of MedicinePudongShanghaiChina
| |
Collapse
|
39
|
Metwaly S, Cote A, Donnelly SJ, Banoei MM, Mourad AI, Winston BW. Evolution of ARDS biomarkers: Will metabolomics be the answer? Am J Physiol Lung Cell Mol Physiol 2018; 315:L526-L534. [PMID: 29952222 PMCID: PMC7191388 DOI: 10.1152/ajplung.00074.2018] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
To date, there is no clinically agreed-upon diagnostic test for acute respiratory distress syndrome (ARDS): the condition is still diagnosed on the basis of a constellation of clinical findings, laboratory tests, and radiological images. Development of ARDS biomarkers has been in a state of continuous flux during the past four decades. To address ARDS heterogeneity, several studies have recently focused on subphenotyping the disease on the basis of observable clinical characteristics and associated blood biomarkers. However, the strong correlation between identified biomarkers and ARDS subphenotypes has yet to establish etiology; hence, there is a need for the adoption of other methodologies for studying ARDS. In this review, we will shed light on ARDS metabolomics research in the literature and discuss advances and major obstacles encountered in ARDS metabolomics research. Generally, the ARDS metabolomics studies focused on identification of differentiating metabolites for diagnosing ARDS, but they were performed to different standards in terms of sample size, selection of control cohort, type of specimens collected, and measuring technique utilized. Virtually none of these studies have been properly validated to identify true metabolomics biomarkers of ARDS. Though in their infancy, metabolomics studies exhibit promise to unfold the biological processes underlying ARDS and, in our opinion, have great potential for pushing forward our present understanding of ARDS.
Collapse
Affiliation(s)
- Sayed Metwaly
- Department of Critical Care Medicine, University of Calgary , Calgary, Alberta , Canada
| | - Andreanne Cote
- Department of Critical Care Medicine, University of Calgary , Calgary, Alberta , Canada
| | - Sarah J Donnelly
- Department of Critical Care Medicine, University of Calgary , Calgary, Alberta , Canada
| | - Mohammad M Banoei
- Department of Critical Care Medicine, University of Calgary , Calgary, Alberta , Canada
| | - Ahmed I Mourad
- Department of Critical Care Medicine, University of Calgary , Calgary, Alberta , Canada
| | - Brent W Winston
- Department of Critical Care Medicine, University of Calgary , Calgary, Alberta , Canada.,Departments of Medicine and Biochemistry and Molecular Biology, University of Calgary , Calgary, Alberta , Canada
| |
Collapse
|
40
|
Kim TH, Choi JY, Kim KH, Kwun MJ, Han CW, Won R, Lee JJ, Kim JI, Joo M. Hominis placenta Suppresses Acute Lung Inflammation by Activating Nrf2. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2018; 46:801-817. [DOI: 10.1142/s0192415x18500428] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Hominis placenta (HP), a dried human placenta, has been known to target liver, lung, or kidney meridians, improving the functions associated with these meridians in traditional Chinese or Asian medicine (TCM). Since recent studies implicate an HP extract in suppressing inflammation, we investigated whether an aqueous HP extract can ameliorate inflammation that occurred in the lungs. When administered with a single intratracheal lipopolysaccharide (LPS), C57BL/6 mice developed an acute neutrophilic lung inflammation along with an increased expression of pro-inflammatory cytokine genes. However, this was diminished by the administration HP extract via an intraperitoneal route 2 h after LPS treatment. Western blot and semi-quantitative RT-PCR analyses revealed that while suppressing the activity of a proinflammatory factor NF-[Formula: see text]B marginally, the HP extract strongly activated an anti-inflammatory factor Nrf2, with concomitant expression of Nrf2-dependent genes. Mechanistically, the HP extract suppressed the ubiquitin-mediated degradation of Nrf2, functioning similarly to a 26S proteasome inhibitor, MG132. Collectively, these results suggest that the HP extract suppresses inflammation in mouse lungs, which is in part related to the HP extract perturbing the ubiquitin-dependent degradation of Nrf2 and thus increasing the function of Nrf2.
Collapse
Affiliation(s)
- Tae Ho Kim
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jun-Yong Choi
- Lung Cancer Clinic, Pulmonary Medicine Center, Pusan National University, Yangsan 50612, Republic of Korea
| | - Kyun Ha Kim
- School of Korean Medicine, Pusan National University, Yangsan 50612, Republic of Korea
| | - Min Jung Kwun
- School of Korean Medicine, Pusan National University, Yangsan 50612, Republic of Korea
| | - Chang-Woo Han
- Department of Internal Medicine, Korean Medicine Hospital of Pusan National University, Yangsan 50612, Republic of Korea
| | - Ran Won
- Department of Biomedical Laboratory Science, Division of Health Sciences, Dongseo University, Busan 47011, Republic of Korea
| | - Jung Ju Lee
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jong-In Kim
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Myungsoo Joo
- School of Korean Medicine, Pusan National University, Yangsan 50612, Republic of Korea
| |
Collapse
|
41
|
Wang ZY, Li T, Wang CT, Xu L, Gao XJ. Assessment of 1-year Outcomes in Survivors of Severe Acute Respiratory Distress Syndrome Receiving Extracorporeal Membrane Oxygenation or Mechanical Ventilation: A Prospective Observational Study. Chin Med J (Engl) 2018; 130:1161-1168. [PMID: 28485315 PMCID: PMC5443021 DOI: 10.4103/0366-6999.205847] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Background: Little is known about the long-term outcomes of severe acute respiratory distress syndrome (ARDS) patients requiring extracorporeal membrane oxygenation (ECMO). This study aimed to investigate the 1-year outcomes of these patients or patients receiving mechanical ventilation (MV) and compare their health-related quality of life (HRQoL) to the general population. Methods: Severe ARDS survivors admitted to two ICUs in China between January 2012 and January 2014 were enrolled. Of the severe ARDS survivors enrolled, 1-year postdischarge, HRQoL assessment using the Short-Form 36 (SF-36) and EuroQol questionnaire dimensions, 6-min walking distance, chest computed tomography scan, pulmonary function, and arterial blood gas analysis were compared for ARDS patients with or without ECMO. Results: ARDS patients receiving ECMO had a significantly higher Acute Physiology and Chronic Health Evaluation II score (30.3 ± 6.7 vs. 26.5 ± 7.3, P = 0.036), lung injury score (3.3 ± 0.4 vs. 2.8 ± 0.5, P = 0.000), Sequential Organ Failure Assessment score (10.8 ± 3.5 vs. 7.9 ± 3.1, P = 0.000), lower PaO2/FiO2 ratio ([mmHg, 1 mmHg = 0.133 kPa], 68.3 ± 16.1 vs. 84.8 ± 16.5, P = 0.000), and increased extrapulmonary organ failure (2 [1, 3] vs. 1 [1, 1], P = 0.025) compared with patients not receiving ECMO. ECMO and non-ECMO survivors showed similar pulmonary function, morphological abnormalities, resting arterial blood gas values, and 6-min walking distance. Mild pulmonary dysfunction and abnormal morphology were observed in a few survivors. In addition, ECMO and non-ECMO survivors showed a similar quality of life. ECMO survivors showed lower SF-36 physical functioning and role-physical domain scores (minimum clinically significant difference at least 5 points), and non-ECMO survivors had similar outcome. Conclusions: One-year posthospital discharge, severe ARDS survivors receiving ECMO or MV demonstrated comparable outcomes. Compared with the general population, ARDS survivors showed reduced HRQoL. Pulmonary function and lung morphology revealed sufficient recovery with minor lung impairment.
Collapse
Affiliation(s)
- Zhi-Yong Wang
- Department of Critical Care Medicine, Tianjin Third Central Hospital, Artificial Cells Key Laboratory of Tianjin, Tianjin 300170, China
| | - Tong Li
- Heart Center, Tianjin Third Central Hospital, Tianjin 300170, China
| | - Chun-Ting Wang
- Department of Critical Care Medicine, Shandong Provincial Hospital, Jinan, Shandong 250021, China
| | - Lei Xu
- Department of Critical Care Medicine, Tianjin Third Central Hospital, Artificial Cells Key Laboratory of Tianjin, Tianjin 300170, China
| | - Xin-Jing Gao
- Department of Critical Care Medicine, Tianjin Third Central Hospital, Artificial Cells Key Laboratory of Tianjin, Tianjin 300170, China
| |
Collapse
|
42
|
Abstract
BACKGROUND Galectin-3 is a β-galactoside-binding lectin implicated as a mediator in a variety of inflammatory and fibrotic diseases. However, information about galectin-3 release in patients with acute respiratory distress syndrome (ARDS) is very limited. We sought to determine whether plasma galectin-3 levels were increased in ARDS patients and were associated with disease severity. METHODS Patients admitted to intensive care unit (ICU) within 48 h and diagnosed with ARDS were identified. In addition, healthy subjects were assigned to a control group. Plasma samples were collected from patients within 48 h after ICU admission as well as healthy subjects. Plasma galectin-3 levels were measured by enzyme-linked immunosorbent assay. The primary outcome was mortality at 28 days. RESULTS Sixty-three ARDS patients were identified. Among these, 27 patients died within 28 days of admission. The plasma galectin-3 levels of the patients were significantly higher than those of control subjects (median [IQR]: 12.37 [7.94-18.79] vs. 5.01 [4.15-5.69] ng/mL, respectively, P <0.0001). Furthermore, galectin-3 levels were significantly higher in non-surviving patients than in those who survived (15.38 [11.59-22.98] vs. 10.07 [7.39-15.54] ng/mL, respectively, P = 0.0136). Plasma galectin-3 levels were significantly correlated with acute physiology and chronic health evaluation II scores and arterial oxygen tension/inspiratory oxygen fraction ratios (Spearman rho = 0.44, P <0.0001 and -0.616, P <0.0001, respectively). At an optimal cutoff of 10.59 ng/mL, the sensitivity and specificity of galectin-3 for prediction of 28-day mortality were 81.48% (95% CI 0.62-0.94) and 55.56% (95% CI 0.38-0.72), respectively. CONCLUSIONS Higher levels of galectin-3 were significantly associated with disease severity and worse outcomes in ARDS patients.
Collapse
|
43
|
Effects of cognate, non-cognate and synthetic CXCR4 and ACKR3 ligands on human lung endothelial cell barrier function. PLoS One 2017; 12:e0187949. [PMID: 29125867 PMCID: PMC5681266 DOI: 10.1371/journal.pone.0187949] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 10/28/2017] [Indexed: 12/13/2022] Open
Abstract
Recent evidence suggests that chemokine CXCL12, the cognate agonist of chemokine receptors CXCR4 and ACKR3, reduces thrombin-mediated impairment of endothelial barrier function. A detailed characterization of the effects of CXCL12 on thrombin-mediated human lung endothelial hyperpermeability is lacking and structure-function correlations are not available. Furthermore, effects of other CXCR4/ACKR3 ligands on lung endothelial barrier function are unknown. Thus, we tested the effects of a panel of CXCR4/ACKR3 ligands (CXCL12, CXCL11, ubiquitin, AMD3100, TC14012) and compared the CXCR4/ACKR3 activities of CXCL12 variants (CXCL12α/β, CXCL12(3–68), CXCL121, CXCL122, CXCL12-S-S4V, CXCL12-R47E, CXCL12-K27A/R41A/R47A) with their effects on human lung endothelial barrier function in permeability assays. CXCL12α enhanced human primary pulmonary artery endothelial cell (hPPAEC) barrier function, whereas CXCL11, ubiquitin, AMD3100 and TC14012 were ineffective. Pre-treatment of hPPAEC with CXCL12α and ubiquitin reduced thrombin-mediated hyperpermeability. CXCL12α-treatment of hPPAEC after thrombin exposure reduced barrier function impairment by 70% (EC50 0.05–0.5nM), which could be antagonized with AMD3100; ubiquitin (0.03–3μM) was ineffective. In a human lung microvascular endothelial cell line (HULEC5a), CXCL12α and ubiquitin post-treatment attenuated thrombin-induced hyperpermeability to a similar degree. CXCL12(3–68) was inefficient to activate CXCR4 in Presto-Tango β-arrestin2 recruitment assays; CXCL12-S-S4V, CXCL12-R47E and CXCL12-K27A/R41A/R47A showed significantly reduced potencies to activate CXCR4. While the potencies of all proteins in ACKR3 Presto-Tango assays were comparable, the efficacy of CXCL12(3–68) to activate ACKR3 was significantly reduced. The potencies to attenuate thrombin-mediated hPPAEC barrier function impairment were: CXCL12α/β, CXCL121, CXCL12-K27A/R41A/R47A > CXCL12-S-S4V, CXCL12-R47E > CXCL122 > CXCL12(3–68). Our findings indicate that CXCR4 activation attenuates thrombin-induced lung endothelial barrier function impairment and suggest that protective effects of CXCL12 are dictated by its CXCR4 agonist activity and interactions of distinct protein moieties with heparan sulfate on the endothelial surface. These data may facilitate development of compounds with improved pharmacological properties to attenuate thrombin-induced vascular leakage in the pulmonary circulation.
Collapse
|
44
|
Cannon JW, Gutsche JT, Brodie D. Optimal Strategies for Severe Acute Respiratory Distress Syndrome. Crit Care Clin 2017; 33:259-275. [PMID: 28284294 DOI: 10.1016/j.ccc.2016.12.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Acute respiratory distress syndrome (ARDS) occurs in more than 10% of intensive care unit admissions and in nearly 25% of ventilated patients. Mortality remains high at 40%, and, for patients who survive, recovery continues for months or even years. Early recognition and minimizing further lung injury remain essential to successful management of severe ARDS. Advanced treatment strategies, which complement lung protective ventilation, include short-term neuromuscular blockade, prone positioning, and extracorporeal membrane oxygenation. Alternative ventilator strategies include high-frequency ventilation and airway pressure release ventilation. This article reviews these options in patients with severe ARDS.
Collapse
Affiliation(s)
- Jeremy W Cannon
- Division of Trauma, Surgical Critical Care & Emergency Surgery, The Perelman School of Medicine at the University of Pennsylvania, 51 North 39th Street, MOB Suite 120, Philadelphia, PA 19104, USA.
| | - Jacob T Gutsche
- Department of Anesthesiology and Critical Care, The Perelman School of Medicine at the University of Pennsylvania, 51 North 39th Street, Philadelphia, PA 19104, USA
| | - Daniel Brodie
- Division of Pulmonary, Allergy, & Critical Care Medicine, Columbia University Medical Center, 622 West 168 Street, PH 8 East, Room 101, New York, NY 10032, USA
| |
Collapse
|
45
|
Prescott HC, Calfee CS, Thompson BT, Angus DC, Liu VX. Toward Smarter Lumping and Smarter Splitting: Rethinking Strategies for Sepsis and Acute Respiratory Distress Syndrome Clinical Trial Design. Am J Respir Crit Care Med 2017; 194:147-55. [PMID: 27244481 DOI: 10.1164/rccm.201512-2544cp] [Citation(s) in RCA: 231] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Both quality improvement and clinical research efforts over the past few decades have focused on consensus definition of sepsis and acute respiratory distress syndrome (ARDS). Although clinical definitions based on readily available clinical data have advanced recognition and timely use of broad supportive treatments, they likely hinder the identification of more targeted therapies that manipulate select biological mechanisms underlying critical illness. Sepsis and ARDS are by definition heterogeneous, and patients vary in both their underlying biology and their severity of illness. We have long been able to identify subtypes of sepsis and ARDS that confer different prognoses. The key is that we are now on the verge of identifying subtypes that may confer different response to therapy. In this perspective, inspired by a 2015 American Thoracic Society International Conference Symposium entitled "Lumpers and Splitters: Phenotyping in Critical Illness," we highlight promising approaches to uncovering patient subtypes that may predict treatment responsiveness and not just differences in prognosis. We then discuss how this information can be leveraged to improve the success and translatability of clinical trials by using predictive enrichment and other design strategies. Last, we discuss the challenges and limitations to identifying biomarkers and endotypes and incorporating them into routine clinical practice.
Collapse
Affiliation(s)
- Hallie C Prescott
- 1 Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Michigan, Ann Arbor, Michigan.,2 Veterans Affairs Center for Clinical Management Research, Ann Arbor, Michigan
| | - Carolyn S Calfee
- 3 Division of Pulmonary and Critical Care Medicine, Department of Medicine, and.,4 Department of Anesthesia, University of California, San Francisco, San Francisco, California
| | - B Taylor Thompson
- 5 Division of Pulmonary and Critical Care Medicine, Department of Medicine, Massachusetts General Hospital, Harvard School of Medicine, Boston, Massachusetts
| | - Derek C Angus
- 6 Clinical Research, Investigation, and Systems Modeling of Acute Illness Center, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; and
| | - Vincent X Liu
- 7 Division of Research, Kaiser Permanente, Oakland, California
| |
Collapse
|
46
|
Lipopolysaccharide-Binding Protein Downregulates Fractalkine through Activation of p38 MAPK and NF- κB. Mediators Inflamm 2017. [PMID: 28634422 PMCID: PMC5467387 DOI: 10.1155/2017/9734837] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Background LBP and fractalkine are known to be involved in the pathogenesis of ARDS. This study investigated the relationship between LBP and fractalkine in LPS-induced A549 cells and rat lung tissue in an ARDS rat model. Methods A549 cells were transfected with LBP or LBP shRNA plasmid DNA or pretreated with SB203580 or SC-514 following LPS treatment. An ARDS rat model was established using LPS with or without LBPK95A, SB203580, or SC-514 treatment. RT-PCR, western blotting, ELISA, immunofluorescence, coimmunoprecipitation, and immunohistochemical staining were used to study the expression of fractalkine and LBP and p38 MAPK and p65 NF-κB activities. Results LPS increased LBP and reduced fractalkine. LBP overexpression further decreased LPS-induced downregulation of fractalkine and p38 MAPK and p65 NF-κB activation; LBP gene silencing, SB203580, and SC-514 suppressed LPS-induced downregulation of fractalkine and p38 MAPK and p65 NF-κB activation in A549 cells. LBP and fractalkine in lung tissue were increased and decreased, respectively, following LPS injection. LBPK95A, SB203580, and SC-514 ameliorated LPS-induced rat lung injury and suppressed LPS-induced downregulation of fractalkine by decreasing phospho-p38 MAPK and p65 NF-κB. Conclusions The results indicate that LBP downregulates fractalkine expression in LPS-induced A549 cells and in an ARDS rat model through activation of p38 MAPK and NF-κB.
Collapse
|
47
|
Incidence, risk factors, and mortality associated with acute respiratory distress syndrome in combat casualty care. J Trauma Acute Care Surg 2017; 81:S150-S156. [PMID: 27768663 DOI: 10.1097/ta.0000000000001183] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The overall incidence and mortality of acute respiratory distress syndrome (ARDS) in civilian trauma settings have decreased over the past four decades; however, the epidemiology and impact of ARDS on modern combat casualty care are unknown. We sought to determine the incidence, risk factors, resource utilization, and mortality associated with ARDS in current combat casualty care. METHODS This was a retrospective review of mechanically ventilated US combat casualties within the Department of Defense Trauma Registry (formerly the Joint Theater Trauma Registry) during Operation Iraqi Freedom/Enduring Freedom (October 2001 to August 2008) for ARDS development, resource utilization, and mortality. RESULTS Of 18,329 US Department of Defense Trauma Registry encounters, 4,679 (25.5%) required mechanical ventilation; ARDS was identified in 156 encounters (3.3%). On multivariate logistic regression, ARDS was independently associated with female sex (odds ratio [OR], 2.62; 95% confidence interval [CI], 1.21-5.71; p = 0.02), higher military-specific Injury Severity Score (Mil ISS) (OR, 4.18; 95% CI, 2.61-6.71; p < 0.001 for Mil ISS ≥25 vs. <15), hypotension (admission systolic blood pressure <90 vs. ≥90 mm Hg; OR, 1.76; 95% CI, 1.07-2.88; p = 0.03), and tachycardia (admission heart rate ≥90 vs. <90 beats per minute; OR, 1.53; 95% CI, 1.06-2.22; p = 0.02). Explosion injury was not associated with increased risk of ARDS. Critical care resource utilization was significantly higher in ARDS patients as was all-cause hospital mortality (ARDS vs. no ARDS, 12.8% vs. 5.9%; p = 0.002). After adjustment for age, sex, injury severity, injury mechanism, Mil ISS, hypotension, tachycardia, and admission Glasgow Coma Scale score, ARDS remained an independent risk factor for death (OR, 1.99; 95% CI, 1.12-3.52; p = 0.02). CONCLUSIONS In this large cohort of modern combat casualties, ARDS risk factors included female sex, higher injury severity, hypotension, and tachycardia, but not explosion injury. Patients with ARDS also required more medical resources and were at greater risk of death compared with patients without ARDS. Thus, ARDS remains a significant complication in current combat casualty care. LEVEL OF EVIDENCE Prognostic/epidemiologic study, level III.
Collapse
|
48
|
Szilágyi KL, Liu C, Zhang X, Wang T, Fortman JD, Zhang W, Garcia JGN. Epigenetic contribution of the myosin light chain kinase gene to the risk for acute respiratory distress syndrome. Transl Res 2017; 180:12-21. [PMID: 27543902 PMCID: PMC5253100 DOI: 10.1016/j.trsl.2016.07.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 07/20/2016] [Accepted: 07/23/2016] [Indexed: 12/12/2022]
Abstract
Acute respiratory distress syndrome (ARDS) is a devastating clinical syndrome with a considerable case fatality rate (∼30%-40%). Health disparities exist with African descent (AD) subjects exhibiting greater mortality than European descent (ED) individuals. Myosin light chain kinase is encoded by MYLK, whose genetic variants are implicated in ARDS pathogenesis and may influence ARDS mortality. As baseline population-specific epigenetic changes, that is, cytosine modifications, have been observed between AD and ED individuals, epigenetic variations in MYLK may provide insights into ARDS disparities. We compared methylation levels of MYLK cytosine-guanine dinucleotides (CpGs) between ARDS patients and intensive care unit (ICU) controls overall and by ethnicity in a nested case-control study of 39 ARDS cases and 75 non-ARDS ICU controls. Two MYLK CpG sites (cg03892735 and cg23344121) were differentially modified between ARDS subjects and controls (P < 0.05; q < 0.25) in a logistic regression model, where no effect modification by ethnicity or age was found. One CpG site was associated with ARDS in patients aged <58 years, cg19611163 (intron 19, 20). Two CpG sites were associated with ARDS in EDs only, gene body CpG (cg01894985, intron 2, 3) and CpG (cg16212219, intron 31, 32), with higher modification levels exhibited in ARDS subjects than controls. Cis-acting modified cytosine quantitative trait loci (mQTL) were identified using linear regression between local genetic variants and modification levels for 2 ARDS-associated CpGs (cg23344121 and cg16212219). In summary, these ARDS-associated MYLK CpGs with effect modification by ethnicity and local mQTL suggest that MYLK epigenetic variation and local genetic background may contribute to health disparities observed in ARDS.
Collapse
Affiliation(s)
- Keely L Szilágyi
- Laboratory Animal Resource Center, Indiana University School of Medicine, Indianapolis, Ind
| | - Cong Liu
- Department of Bioengineering, University of Illinois at Chicago, Chicago, Ill
| | - Xu Zhang
- Department of Medicine, University of Illinois at Chicago, Chicago, Ill
| | - Ting Wang
- University of Arizona Health Sciences, University of Arizona, Tucson, Ariz
| | - Jeffrey D Fortman
- Biological Resources Laboratory, University of Illinois at Chicago, Chicago, Ill
| | - Wei Zhang
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Ill.
| | - Joe G N Garcia
- University of Arizona Health Sciences, University of Arizona, Tucson, Ariz
| |
Collapse
|
49
|
San Roman E, Venuti MS, Ciarrocchi NM, Fernández Ceballos I, Gogniat E, Villarroel S, Carini FC, Giannasi SE. Implementation and results of a new ECMO program for lung transplantation and acute respiratory distress. Rev Bras Ter Intensiva 2016; 27:134-40. [PMID: 26340153 PMCID: PMC4489781 DOI: 10.5935/0103-507x.20150024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 04/03/2015] [Indexed: 01/19/2023] Open
Abstract
Objective The development of the extracorporeal membrane oxygenation in Latin America
represents a challenge in this specialty field. The objective of this article was
to describe the results of a new extracorporeal membrane oxygenation program in an
intensive care unit. Methods This retrospective cohort study included 22 patients who required extracorporeal
membrane oxygenation and were treated from January 2011 to June 2014. The baseline
characteristics, indications, duration of the condition, days on mechanical
ventilation, days in the intensive care unit, complications, and hospital
mortality were evaluated. Results Fifteen patients required extracorporeal membrane oxygenation after lung
transplantation, and seven patients required oxygenation due to acute respiratory
distress. All transplanted patients were weaned from extracorporeal membrane
oxygenation with a median duration of 3 days (Interquartile range - IQR: 2 - 5),
were on mechanical ventilation for a median of 15.5 days (IQR: 3 - 25), and had an
intensive care unit stay of 31.5 days (IQR: 19 - 53) and a median hospital stay of
60 days (IQR: 36 - 89) with 20% mortality. Patients with acute respiratory
distress had a median oxygenation membrane duration of 9 days (IQR: 3 - 14),
median mechanical ventilation time of 25 days (IQR: 13 - 37), a 31 day stay in
therapy (IQR: 11 - 38), a 32 day stay in the hospital (IQR: 11 - 41), and 57%
mortality. The main complications were infections (80%), acute kidney failure
(43%), bleeding at the surgical site and at the site of cannula placement (22%),
plateletopenia (60%), and coagulopathy (30%). Conclusion In spite of the steep learning curve, we considered this experience to be
satisfactory, with results and complications comparable to those reported in the
literature.
Collapse
Affiliation(s)
- Eduardo San Roman
- Unidad de Terapia Intensiva de Adultos, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - María Sofía Venuti
- Unidad de Terapia Intensiva de Adultos, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | | | | | - Emiliano Gogniat
- Unidad de Terapia Intensiva de Adultos, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Sonia Villarroel
- Unidad de Terapia Intensiva de Adultos, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Federico Carlos Carini
- Unidad de Terapia Intensiva de Adultos, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Sergio Eduardo Giannasi
- Unidad de Terapia Intensiva de Adultos, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| |
Collapse
|
50
|
Jiang Y, Zeng Y, Huang X, Qin Y, Luo W, Xiang S, Sooranna SR, Pinhu L. Nur77 attenuates endothelin-1 expression via downregulation of NF-κB and p38 MAPK in A549 cells and in an ARDS rat model. Am J Physiol Lung Cell Mol Physiol 2016; 311:L1023-L1035. [PMID: 27765761 PMCID: PMC5206403 DOI: 10.1152/ajplung.00043.2016] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 10/03/2016] [Indexed: 02/07/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) is characterized by inflammatory injury to the alveolar and capillary barriers that results in impaired gas exchange and severe acute respiratory failure. Nuclear orphan receptor Nur77 has emerged as a regulator of gene expression in inflammation, and its role in the pathogenesis of ARDS is not clear. The objective of this study is to investigate the potential role of Nur77 and its underlying mechanism in the regulation of endothelin-1 (ET-1) expression in lipopolysaccharide (LPS)-induced A549 cells and an ARDS rat model. We demonstrate that LPS induced Nur77 expression and nuclear export in A549 cells. Overexpression of Nur77 markedly decreased basal and LPS-induced ET-1 expression in A549 cells, whereas knockdown of Nur77 increased the ET-1 expression. LPS-induced phosphorylation and nuclear translocation of NF-κB and p38 MAPK were blocked by Nur77 overexpression and augmented by Nur77 knockdown in A549 cells. In vivo, LPS induced Nur77 expression in lung in ARDS rats. Pharmacological activation of Nur77 by cytosporone B (CsnB) inhibited ET-1 expression in ARDS rats, decreased LPS-induced phosphorylation of NF-κB and p38 MAPK, and relieved lung, liver, and kidney injury. Pharmacological deactivation of Nur77 by 1,1-bis-(3'-indolyl)-1-(p-hydroxyphenyl)methane (DIM-C-pPhOH, C-DIM8) had no effect on ET-1 expression and lung injury. These results indicated that Nur77 decreases ET-1 expression by suppressing NF-κB and p38 MAPK in LPS-stimulated A549 cells in vitro, and, in an LPS-induced ARDS rat model, CsnB reduced ET-1 expression and lung injury in ARDS rats.
Collapse
MESH Headings
- A549 Cells
- Active Transport, Cell Nucleus/drug effects
- Animals
- Cell Nucleus/drug effects
- Cell Nucleus/metabolism
- Disease Models, Animal
- Down-Regulation/drug effects
- Endothelin-1/metabolism
- Kidney/drug effects
- Kidney/pathology
- Lipopolysaccharides/pharmacology
- Liver/drug effects
- Liver/pathology
- Lung/drug effects
- Lung/metabolism
- Male
- NF-kappa B/metabolism
- Nuclear Receptor Subfamily 4, Group A, Member 1/agonists
- Nuclear Receptor Subfamily 4, Group A, Member 1/genetics
- Nuclear Receptor Subfamily 4, Group A, Member 1/metabolism
- Phenylacetates/pharmacology
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Rats, Sprague-Dawley
- Respiratory Distress Syndrome/enzymology
- Respiratory Distress Syndrome/genetics
- Respiratory Distress Syndrome/pathology
- p38 Mitogen-Activated Protein Kinases/metabolism
Collapse
Affiliation(s)
- Yujie Jiang
- The First Clinical Medical College of Jinan University, Guangzhou, Guangdong Province, China
- Department of Respiratory Medicine
| | - Yi Zeng
- Department of Central Laboratory, Youjiang Medical University for Nationalities, Baise, Guangxi, China
| | - Xia Huang
- The First Clinical Medical College of Jinan University, Guangzhou, Guangdong Province, China
- Department of Respiratory Medicine
| | - Yueqiu Qin
- Department of Digestive, Youjiang Medical University for Nationalities, Baise, Guangxi, China; Youjiang Medical University for Nationalities, Baise, Guangxi, China
| | | | - Shulin Xiang
- Department of Intensive Care Unit, the People's Hospital of Guangxi, Nanning, Guangxi, China
| | - Suren R Sooranna
- Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdon; and
| | - Liao Pinhu
- Department of Intensive Care Medicine, Youjiang Medical University for Nationalities, Baise, Guangxi, China
| |
Collapse
|