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Kosutova P, Mikolka P, Balentova S, Adamkov M, Calkovska A, Mokra D. Effects of PDE3 Inhibitor Olprinone on the Respiratory Parameters, Inflammation, and Apoptosis in an Experimental Model of Acute Respiratory Distress Syndrome. Int J Mol Sci 2020; 21:E3382. [PMID: 32403267 PMCID: PMC7247002 DOI: 10.3390/ijms21093382] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/03/2020] [Accepted: 05/06/2020] [Indexed: 12/12/2022] Open
Abstract
This study aimed to investigate whether a selective phosphodiesterase-3 (PDE3) inhibitor olprinone can positively influence the inflammation, apoptosis, and respiratory parameters in animals with acute respiratory distress syndrome (ARDS) model induced by repetitive saline lung lavage. Adult rabbits were divided into 3 groups: ARDS without therapy (ARDS), ARDS treated with olprinone i.v. (1 mg/kg; ARDS/PDE3), and healthy ventilated controls (Control), and were oxygen-ventilated for the following 4 h. Dynamic lung-thorax compliance (Cdyn), mean airway pressure (MAP), arterial oxygen saturation (SaO2), alveolar-arterial gradient (AAG), ratio between partial pressure of oxygen in arterial blood to a fraction of inspired oxygen (PaO2/FiO2), oxygenation index (OI), and ventilation efficiency index (VEI) were evaluated every hour. Post mortem, inflammatory and oxidative markers (interleukin (IL)-6, IL-1β, a receptor for advanced glycation end products (RAGE), IL-10, total antioxidant capacity (TAC), 3-nitrotyrosine (3NT), and malondialdehyde (MDA) and apoptosis (apoptotic index and caspase-3) were assessed in the lung tissue. Treatment with olprinone reduced the release of inflammatory mediators and markers of oxidative damage decreased apoptosis of epithelial cells and improved respiratory parameters. The results indicate a future potential of PDE3 inhibitors also in the therapy of ARDS.
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Affiliation(s)
- Petra Kosutova
- Biomedical Center Martin and Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin 036 01, Slovakia; (P.K.); (P.M.); (A.C.)
| | - Pavol Mikolka
- Biomedical Center Martin and Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin 036 01, Slovakia; (P.K.); (P.M.); (A.C.)
| | - Sona Balentova
- Department of Histology and Embryology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin 036 01, Slovakia; (S.B.); (M.A.)
| | - Marian Adamkov
- Department of Histology and Embryology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin 036 01, Slovakia; (S.B.); (M.A.)
| | - Andrea Calkovska
- Biomedical Center Martin and Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin 036 01, Slovakia; (P.K.); (P.M.); (A.C.)
| | - Daniela Mokra
- Biomedical Center Martin and Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin 036 01, Slovakia; (P.K.); (P.M.); (A.C.)
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Hui Q, Zhang Q, Li X, Wang K, Zhang J, Zhou Z. Down-regulation of miR-133a-3p protects lung tissue against sepsis-induced acute respiratory distress syndrome by up-regulating SIRT1. Arch Med Sci 2020; 20:289-301. [PMID: 38414466 PMCID: PMC10895959 DOI: 10.5114/aoms.2020.94410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 11/09/2019] [Indexed: 02/29/2024] Open
Abstract
Introduction MicroRNA-133a-3p (miR-133a-3p) is a potential gene regulator having an important role in the process of inflammation and lung injury. The present work studied the role of miR-133a-3p in sepsis-mediated acute respiratory distress syndrome (ARDS) and the mechanism involved. Material and methods C57BL/6 mice were selected for the study. Protein expression of Bcl-2, cleaved caspase-3 and Bax was assessed by western blot analysis. Expression of mRNA was assessed by RT-PCR. Effects of inflammation were studied by myeloperoxidase (MPO) activity. Quantification of albumin was done by measuring the albumin conjugated with Evan's blue. The alveolar macrophages were separated from the lungs of mice by the bronchoalveolar lavage procedure and were submitted to sepsis challenge in vitro; the macrophages were treated with lipopolysaccharide (LPS). Results Treatment of LPS resulted in upregulation of miR-133a-3p in alveolar macrophages. Suppression of miR-133a-3p halted the over-expression of inflammatory cytokines in macrophages and caused remission of histopathologic changes. The ARDS lungs showed a decrease in levels of proinflammatory cytokines and an increase in levels of apoptotic protein, establishing the protective role for miR-133a-3p. The results suggested sirtuin 1 (SIRT1) as a potential target of miR-133a-3p in the macrophages, also showing that expression of SIRT1 was inversely associated with expression of miR-133a-3p. The protective effect of miR-133a-3p down-regulation in LPS-mediated alveolar macrophages and sepsis-induced ARDS could be corrected by a SIRT1 inhibitor. Conclusions Down-regulation of miR-133a-3p may exert a protective effect on lung tissue against sepsis-mediated ARDS by up-regulating the levels of SIRT1 via suppressing the inflammatory response and inhibiting the cellular apoptosis in lung tissues.
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Affiliation(s)
- Qin Hui
- Department of Pediatrics, China-Japan Friendship Hospital, Chaoyang District, Beijing, China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Qi Zhang
- Department of Pediatrics, China-Japan Friendship Hospital, Chaoyang District, Beijing, China
| | - Xuan Li
- Department of Pediatrics, China-Japan Friendship Hospital, Chaoyang District, Beijing, China
| | - Kundi Wang
- Department of Pediatrics, China-Japan Friendship Hospital, Chaoyang District, Beijing, China
| | - Jing Zhang
- Department of Pediatrics, China-Japan Friendship Hospital, Chaoyang District, Beijing, China
| | - Zhongshu Zhou
- Department of Pediatrics, China-Japan Friendship Hospital, Chaoyang District, Beijing, China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
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Systems pharmacology reveals the mechanism of activity of Ge-Gen-Qin-Lian decoction against LPS-induced acute lung injury: A novel strategy for exploring active components and effective mechanism of TCM formulae. Pharmacol Res 2020; 156:104759. [PMID: 32200026 DOI: 10.1016/j.phrs.2020.104759] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 03/07/2020] [Accepted: 03/16/2020] [Indexed: 12/16/2022]
Abstract
Acute lung injury (ALI), a severe and life-threatening inflammation of the lung, with high morbidity and mortality, underscoring the urgent need for novel treatments. Ge-Gen-Qin-Lian decoction (GQD), a classic Chinese herbal formula, has been widely used to treat intestine-related diseases in the clinic for centuries. In recent years, a growing number of studies have found that GQD has a favorable anti-inflammatory effect. With the further study on the viscera microbiota, the link between the lungs and the gut-the gut-lung axis has been established. Based on the theory of the gut-lung axis, we used systems pharmacology to explore the effects and mechanisms of GQD treatment in ALI. Hypothesizing that GQD inhibits ALI progression, we used the experimental model of lipopolysaccharide (LPS)-induced ALI in Balb/c mice to evaluate the therapeutic potential of GQD. Our results showed that GQD exerted protective effects against LPS-induced ALI by reducing pulmonary edema and microvascular permeability. Meanwhile, GQD can downregulate the expression of LPS-induced TNF-α, IL-1β, and IL-6 in lung tissue, bronchoalveolar lavage fluid (BLAF), and serum. To further understand the molecular mechanism of GQD in the treatment of ALI, we used the network pharmacology to predict the disease targets of the active components of GQD. Lung tissue and serum samples of the mice were separately analyzed by transcriptomics and metabolomics. KEGG pathway analysis of network pharmacology and transcriptomics indicated that PI3K/Akt signaling pathway was significantly enriched, suggesting that it may be the main regulatory pathway for GQD treatment of ALI. By immunohistochemical analysis and apoptosis detection, it was verified that GQD can inhibit ALI apoptosis through PI3K/Akt signaling pathway. Then, we used the PI3K inhibitor LY294002 to block the PI3K/Akt signaling pathway, and reversely verified that the PI3K/Akt signaling pathway is the main pathway of GQD anti-ALI. In addition, differential metabolites in mice serum samples indicate that GQD can inhibit the inflammatory process of ALI by reversing the imbalance of energy metabolism. Our study showed that, GQD did have a better therapeutic effect on ALI, and initially elucidated its molecular mechanism. Thus, GQD could be exploited to develop novel therapeutics for ALI. Moreover, our study also provides a novel strategy to explore active components and effective mechanism of TCM formula combined with TCM theory to treat ALI.
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Huang LM, Hu Q, Huang X, Qian Y, Lai XH. Preconditioning rats with three lipid emulsions prior to acute lung injury affects cytokine production and cell apoptosis in the lung and liver. Lipids Health Dis 2020; 19:19. [PMID: 32024527 PMCID: PMC7003422 DOI: 10.1186/s12944-019-1137-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 10/21/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Critically ill patients are at higher risk having acute lung injury (ALI) and more often in need of parenteral nutrition. We sought to study whether preconditioning with representative of lipid emulsions for one week could benefit rats from ALI. METHODS Using a lipopolysaccharide (LPS)-induced ALI rat model and techniques such as polymerase chain reaction (PCR), enzyme-linked immunosorbent assay (ELISA), and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) staining. RESULTS PGE2 production in the serum was highest in the LPS group, followed with Intralipid group, and the PGE2 level of these two groups was significantly (P < 0.05) higher than the rest. Intralipid conditioning caused significantly less production of LTB4 than the LPS, Clinoleic, or Omegaven group. In contrast to Intralipid, rats pretreated with Clinoleic or Omegaven significantly decreased their production of inflammatory mediators (IL-1 β, IL-6 and TNF-α), had less apoptosis in the lung tissues, and Omegaven greatly improved liver function upon lipopolysaccharide (LPS) challenge. CONCLUSIONS In an ALI setting, preconditioning with Omegaven or Clinoleic was better than Intralipid in decreasing the intensity of the cytokine storm and apoptosis caused by LPS challenge, and Omegaven in addition had the potential to improve liver function. The results from the present study set a basis for further investigation of the molecular mechanisms of ALI, including the up- and downstream pathways of proinflammatory factor production, in search of (small) molecules intervening with the pathogenesis of ALI in order to translate relevant research findings into clinical benefit for patients with ALI. The use of Omegaven or Clinoleic, particularly in patients with ALI, is still characterized by uncertainty due to a lack of relevant studies. Future investigations must specifically focus on the route of administration and mode of application (enteral vs. parenteral/bolus vs. continuous), determining an optimal dose of Omegaven or Clinoleic, and the defining the best timepoint(s) for administration. Critically ill patients are at higher risk having acute lung injury (ALI) and more often in need of parenteral nutrition. The effect of lipid emulsion via parenteral nutrition on liver function was first time evaluated in rats in an ALI setting. The comparison of three forms of lipid emulsion in a rat model of acute lung injury was first time studied. The fish oil-based lipid emulsion decrease in PGE 2 and increase in LTB 4 was first time reported.
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Affiliation(s)
- Li-Mi Huang
- Department of Pediatrics, The First affiliated hospital of Wenzhou Medical University, Wenzhou, Zhejiang province, China
| | - Qingqing Hu
- Department of Pediatrics, The First affiliated hospital of Wenzhou Medical University, Wenzhou, Zhejiang province, China
| | - Xiaoxia Huang
- Department of Pediatrics, The First affiliated hospital of Wenzhou Medical University, Wenzhou, Zhejiang province, China
| | - Yan Qian
- Department of Pediatrics, The First affiliated hospital of Wenzhou Medical University, Wenzhou, Zhejiang province, China.
| | - Xin-He Lai
- Department of Pediatrics, The First affiliated hospital of Wenzhou Medical University, Wenzhou, Zhejiang province, China.
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Hagiwara J, Yamada M, Motoda N, Yokota H. Intravenous Immunoglobulin Attenuates Cecum Ligation and Puncture-Induced Acute Lung Injury by Inhibiting Apoptosis of Alveolar Epithelial Cells. J NIPPON MED SCH 2019; 87:129-137. [PMID: 31902854 DOI: 10.1272/jnms.jnms.2020_87-303] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
PURPOSE Intravenous immunoglobulin (IVIG) therapy has been used to treat sepsis, but its mechanisms of action remain unclear. Sepsis causes multiple organ failure, such as acute lung injury (ALI), which involves apoptosis of alveolar epithelial cells. In this study, we hypothesized that IVIG suppresses apoptosis in alveolar epithelial cells and evaluated mortality, cytokine levels, histological changes in the lung, and alveolar epithelial cell apoptosis after IVIG administration, in mice with experimentally induced sepsis. METHODS Mice received an injection of vehicle (saline) or immunoglobulin (100 mg/kg or 400 mg/kg) into the tail vein, after which they underwent cecal ligation and puncture. A sham-operated group was used as the normal control. Survival was assessed in all groups after 72 hours. Plasma levels of TNF-α and IL-6, histopathological changes and wet-to-dry ratio in lung, and alveolar epithelial cell apoptosis were evaluated in all groups at 4 hours after surgery. RESULTS In the vehicle group, histopathological injury of the lung was severe, and apoptosis of alveolar epithelial cells was significant. Survival and plasma cytokine levels were better in the IVIG treatment groups than in the vehicle group. IVIG 400 mg/kg suppressed apoptosis of alveolar epithelial cells and reduced ALI. CONCLUSION IVIG suppressed inflammatory cytokine levels and improved survival. Lung histopathology and alveolar epithelial cell apoptosis were improved by IVIG treatment, in a dose-dependent manner. Suppressing apoptosis in alveolar epithelial cells appears to be a mechanism by which IVIG improves survival.
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Affiliation(s)
- Jun Hagiwara
- Department of Emergency and Critical Care Medicine, Graduate School of Medicine, Nippon Medical School
| | - Marina Yamada
- Faculty of Medical Science, Nippon Sport Science University
| | - Norio Motoda
- Department of Pathology, Nippon Medical School Musashi Kosugi Hospital
| | - Hiroyuki Yokota
- Department of Emergency and Critical Care Medicine, Graduate School of Medicine, Nippon Medical School
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Ding Z, Zhong R, Xia T, Yang Y, Xing N, Wang W, Wang Y, Yang B, Sun X, Shu Z. Advances in research into the mechanisms of Chinese Materia Medica against acute lung injury. Biomed Pharmacother 2019; 122:109706. [PMID: 31918277 DOI: 10.1016/j.biopha.2019.109706] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/30/2019] [Accepted: 11/24/2019] [Indexed: 12/13/2022] Open
Abstract
Acute lung injury (ALI) is a common and serious disease. Numerous treatment options are available but they do not improve quality of life or reduce mortality for ALI patients. Here, we review the treatments for ALI to provide basic data for ALI drug therapy research and development. Chinese Materia Medica (CMM) has long been the traditional clinical approach in China for the treatment of ALI and it has proven efficacy. The continued study of CMM has disclosed new potential therapeutic ingredients for ALI. However, few reviews summarize the currently available CMM-based anti-ALI drugs. Therefore, the systematic analysis of research progress in anti-ALI CMM is of great academic and clinical value. The aim of the present review is to describe CMM-based research progress in ALI treatment. Data were compiled by electronic retrieval (CNKI, SciFinder, PubMeds, Google Scholar, Web of Science) and from articles, patents and ethnopharmacological literature in university libraries were systematically studied. This review introduces progress in research on the etiology and mechanisms of ALI, the anti-ALI theory and modes of action in traditional Chinese medicine (TCM), anti-ALI active constituents of CMM, research progress in experimental methods of CMM anti-ALI, the anti-ALI molecular mechanisms of CMM, the anti-ALI efficacy of CMM formulae, and the potential toxicity of CMM and the antidotes for it. Scholars have investigated the anti-ALI molecular mechanism of CMM from various direction and have made substantial progress. This research explored the above aspects, enriched the anti-ALI theory of CMM and established the clinical significance and developmental prospects of ALI treatment by CMM. Because of the high frequency of drugs such as glucocorticoids or antibiotics, Western medicine lacks the advantages of CMM in terms of overall anti-ALI efficacy. In the future, the development of CMM-based anti-ALI therapies will become a major trend in the field of ALI drug development. Successful clinical safety and efficacy validations will promote and encourage the use of CMM. It provides fundamental theoretical support for the discovery and use of CMM resources through the comprehensive analysis of various anti-ALI CMM report databases.
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Affiliation(s)
- Zihe Ding
- Guangdong Standardized Processing Engineering Technology Research Center of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China; Department of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Renxing Zhong
- Guangdong Standardized Processing Engineering Technology Research Center of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China; Department of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Tianyi Xia
- Guangdong Standardized Processing Engineering Technology Research Center of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China; Department of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yanni Yang
- Guangdong Standardized Processing Engineering Technology Research Center of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China; Department of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Na Xing
- Guangdong Standardized Processing Engineering Technology Research Center of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China; Department of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Wujing Wang
- Guangdong Standardized Processing Engineering Technology Research Center of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China; Department of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yi Wang
- Guangdong Standardized Processing Engineering Technology Research Center of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Bingyou Yang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Xiaobo Sun
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Zunpeng Shu
- Guangdong Standardized Processing Engineering Technology Research Center of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China; Department of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China; Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.
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Han J, Liu Y, Liu H, Li Y. Genetically modified mesenchymal stem cell therapy for acute respiratory distress syndrome. Stem Cell Res Ther 2019; 10:386. [PMID: 31843004 PMCID: PMC6915956 DOI: 10.1186/s13287-019-1518-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 11/20/2019] [Accepted: 12/03/2019] [Indexed: 12/13/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a devastating hypoxemic respiratory failure, characterized by disruption of the alveolar-capillary membrane barrier. Current management for ARDS remains supportive, including lung-protective ventilation and a conservative fluid strategy. Mesenchymal stem cells (MSCs) have emerged as a potentially attractive candidate for the management of ARDS through facilitating lung tissue regeneration and repair by releasing paracrine soluble factors. Over the last decade, a variety of strategies have emerged to optimize MSC-based therapy. Among these, the strategy using genetically modified MSCs has received increased attention recently due to its distinct advantage, in conferring incremental migratory capacity and, enhancing the anti-inflammatory, immunomodulatory, angiogenic, and antifibrotic effects of these cells in numerous preclinical ARDS models, which may in turn provide additional benefits in the management of ARDS. Here, we provide an overview of recent studies testing the efficacy of genetically modified MSCs using preclinical models of ARDS.
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Affiliation(s)
- Jibin Han
- Department of Critical Care Medicine, First Hospital of Shanxi Medical University, No. 85, Jiefangnan Road, Taiyuan, 030001, Shanxi, China
| | - Yuxiang Liu
- Shanxi Medical University, No.56, Xinjiannan Road, Taiyuan, 030001, Shanxi, China
| | - Hong Liu
- Department of Critical Care Medicine, First Hospital of Shanxi Medical University, No. 85, Jiefangnan Road, Taiyuan, 030001, Shanxi, China.
| | - Yuanyuan Li
- Department of Critical Care Medicine, First Hospital of Shanxi Medical University, No. 85, Jiefangnan Road, Taiyuan, 030001, Shanxi, China.
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Overexpression of MALAT1 Relates to Lung Injury through Sponging miR-425 and Promoting Cell Apoptosis during ARDS. Can Respir J 2019; 2019:1871394. [PMID: 31871512 PMCID: PMC6913333 DOI: 10.1155/2019/1871394] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 08/21/2019] [Accepted: 09/19/2019] [Indexed: 12/14/2022] Open
Abstract
Background Acute respiratory distress syndrome (ARDS) is a severe form of acute lung injury during which severe inflammatory responses induce cell apoptosis, necrosis, and fibrosis. Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is a multiple function long noncoding RNA that was found overexpressed during acute lung injury. However, the roles of MALAT1 in ARDS patients are still unknown. Methods Total RNA was extracted from the plasma, plasma exosome, and peripheral blood mononuclear cells (PBMCs) from 65 ARDS patients and 36 healthy controls. The MALAT1 and six candidate miRNAs levels were detected by qRT-PCR. The interaction between MALAT1 and miR-425 was predicted using a bioinformatics tool and verified by dual luciferase assay. Exosomes from ARDS patients were cultured with A549 and HFL-1 cells to confirm the delivery of miR-425 by exosomes. Cell apoptosis and viability were determined by flow cytometry and MTT assay. Results We found MALAT1 was significantly increased in the ARDS patients' plasma and PBMCs. The MALAT1 level in PBMCs was negatively correlated with exosomal miR-425 level. MALAT1 interacted with miR-425 and protected phosphatase and tensin homolog (PTEN) expression in A549 and HFL-1 cells. Exosomes from ARDS patients delivered less miR-425 into A549 and HFL-1 cells and induced cell apoptosis via upregulating PTEN. Conclusion This study identified increased MALAT1 and decreased miR-425 in ARDS patients and unveiled their roles during the pathogenesis of ARDS.
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Li W, Wu X, Yu J, Ma C, Zhuang P, Zeng J, Zhang J, Deng G, Wang Y. Magnesium sulfate attenuates lipopolysaccharides-induced acute lung injury in mice. CHINESE J PHYSIOL 2019; 62:203-209. [PMID: 31670284 DOI: 10.4103/cjp.cjp_48_19] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Acute lung injury (ALI) is a common and severe respiratory disease with high morbidity and mortality. Although some progress has been made in the past years, the pathogenesis of ALI is still poorly understood and the therapeutic outcome has still not been significantly improved. It is well-recognized that magnesium sulfate (MgSO4) possesses potent anti-inflammation capacity. The present study was designed to investigate the protective effects of MgSO4 in lipopolysaccharides (LPSs)-induced ALI taken into account that excessive inflammatory response plays critical role in the development of ALI. In this study, Kunming mice were intravenously injected with LPS through tail vein to establish the ALI model and in parallel, A549 cells were used to establish cell model. The lung wet-to-dry weight ratio, malondialdehyde (MDA) levels in lung tissue, lung permeability index, hematoxylin and eosin staining, cytokines in the serum and bronchoalveolar lavage fluid (BALF), neutrophil counts in BALF, LPS-induced A549 cell apoptosis as well as apoptosis-inducing factor (AIF), and Poly(ADP-ribose) polymerase-1 (PARP-1) expression in both mice and A549 cells were detected. Our results demonstrated that MgSO4 significantly attenuated the LPS-induced ALI, oxidative stress (decreased MDA levels), and lung inflammatory response. Moreover, MgSO4 exerted protective effects by mitigating LPS-induced A549 cell apoptosis. Furthermore, MgSO4 decreased the AIF and PARP-1 expression both in vivo and in vitro. Our results, taken together, demonstrated that MgSO4 is a potential therapeutic agent for ALI taken into consideration that MgSO4 is commonly used in clinical settings.
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Affiliation(s)
- Wu Li
- Department of Pathogenic Microbiology, Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Yinchuan; Department of Microbiology and Molecular Biology, College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Xiaoling Wu
- Department of Pathogenic Microbiology, Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Yinchuan; Department of Microbiology and Molecular Biology, College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Jialin Yu
- Department of Pathogenic Microbiology, Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Yinchuan; Department of Microbiology and Molecular Biology, College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Chenjie Ma
- Department of Pathogenic Microbiology, Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Yinchuan; Department of Microbiology and Molecular Biology, College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Peipei Zhuang
- Department of Pathogenic Microbiology, Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Yinchuan; Department of Microbiology and Molecular Biology, College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Jin Zeng
- Department of Pathogenic Microbiology, Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Yinchuan; Department of Microbiology and Molecular Biology, College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Jiamei Zhang
- Department of Pathogenic Microbiology, Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Yinchuan; Department of Microbiology and Molecular Biology, College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Guangcun Deng
- Department of Pathogenic Microbiology, Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Yinchuan; Department of Microbiology and Molecular Biology, College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Yujiong Wang
- Department of Pathogenic Microbiology, Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Yinchuan; Department of Microbiology and Molecular Biology, College of Life Science, Ningxia University, Yinchuan, Ningxia, China
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Zebialowicz Ahlström J, Massaro F, Mikolka P, Feinstein R, Perchiazzi G, Basabe-Burgos O, Curstedt T, Larsson A, Johansson J, Rising A. Synthetic surfactant with a recombinant surfactant protein C analogue improves lung function and attenuates inflammation in a model of acute respiratory distress syndrome in adult rabbits. Respir Res 2019; 20:245. [PMID: 31694668 PMCID: PMC6836435 DOI: 10.1186/s12931-019-1220-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 10/17/2019] [Indexed: 02/06/2023] Open
Abstract
AIM In acute respiratory distress syndrome (ARDS) damaged alveolar epithelium, leakage of plasma proteins into the alveolar space and inactivation of pulmonary surfactant lead to respiratory dysfunction. Lung function could potentially be restored with exogenous surfactant therapy, but clinical trials have so far been disappointing. These negative results may be explained by inactivation and/or too low doses of the administered surfactant. Surfactant based on a recombinant surfactant protein C analogue (rSP-C33Leu) is easy to produce and in this study we compared its effects on lung function and inflammation with a commercial surfactant preparation in an adult rabbit model of ARDS. METHODS ARDS was induced in adult New Zealand rabbits by mild lung-lavages followed by injurious ventilation (VT 20 m/kg body weight) until P/F ratio < 26.7 kPa. The animals were treated with two intratracheal boluses of 2.5 mL/kg of 2% rSP-C33Leu in DPPC/egg PC/POPG, 50:40:10 or poractant alfa (Curosurf®), both surfactants containing 80 mg phospholipids/mL, or air as control. The animals were subsequently ventilated (VT 8-9 m/kg body weight) for an additional 3 h and lung function parameters were recorded. Histological appearance of the lungs, degree of lung oedema and levels of the cytokines TNFα IL-6 and IL-8 in lung homogenates were evaluated. RESULTS Both surfactant preparations improved lung function vs. the control group and also reduced inflammation scores, production of pro-inflammatory cytokines, and formation of lung oedema to similar degrees. Poractant alfa improved compliance at 1 h, P/F ratio and PaO2 at 1.5 h compared to rSP-C33Leu surfactant. CONCLUSION This study indicates that treatment of experimental ARDS with synthetic lung surfactant based on rSP-C33Leu improves lung function and attenuates inflammation.
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Affiliation(s)
- J Zebialowicz Ahlström
- Division for Neurogeriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden
| | - F Massaro
- Anesthesia and Intesive Care, Villa Anthea Hospital, Bari, Italy
| | - P Mikolka
- Division for Neurogeriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.,Biomedical Center Martin and Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - R Feinstein
- Department of Pathology, The Swedish National Veterinary Institute, Uppsala, Sweden
| | - G Perchiazzi
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - O Basabe-Burgos
- Division for Neurogeriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden
| | - T Curstedt
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - A Larsson
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - J Johansson
- Division for Neurogeriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden
| | - A Rising
- Division for Neurogeriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden. .,Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden.
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61
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Jiang Y, Wang X, Yang W, Gui S. Procyanidin B2 Suppresses Lipopolysaccharides-Induced Inflammation and Apoptosis in Human Type II Alveolar Epithelial Cells and Lung Fibroblasts. J Interferon Cytokine Res 2019; 40:54-63. [PMID: 31603717 DOI: 10.1089/jir.2019.0083] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Acute lung injury (ALI) is characterized by acute lung inflammation and apoptosis of alveolar epithelial cells (AECs) with a high morbidity and mortality. Procyanidin B2 (PCB2) is a naturally occurring flavonoid with anti-inflammatory activity. Our previous study demonstrated that PCB2 inhibited NLRP3 inflammasome signaling and ameliorated paraquat-induced ALI in rat, indicating the protective role of PCB2. As lipopolysaccharide (LPS) induced acute cell injury and dysfunction, we continued to evaluate the protective effects of PCB2 using LPS-treated human AECs and lung fibroblasts (LFs) model. We tested the effects of PCB2 on cell permeability, viability, apoptosis, nuclear factor-kappaB (NF-κB) activation, NLRP3 inflammasome activation, and proinflammatory cytokines production in LPS-treated human AECs and LFs. PCB2 prevented LPS-induced cell apoptosis, and increased the cell viability in LPS-treated human AECs and LFs. PCB2 inhibited LPS-induced Bax and active caspase-3 expression, and promoted Bcl-2 expression. PCB2 prevented LPS-induced tumor necrosis factor-α, interleukin-1β expression, NF-κB activation, and NLRP3 inflammasome activation. PCB2 suppressed LPS-induced inflammation and apoptosis in human AECs and LFs by inhibiting NF-κB and NLRP3 inflammasome.
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Affiliation(s)
- Yinling Jiang
- Department of Respiratory, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.,Department of Respiratory, Anhui Medical University Affiliated Hefei Hospital, Hefei Second People's Hospital, Hefei, Anhui, China
| | - Xiaoqiong Wang
- Department of Respiratory, Anhui Medical University Affiliated Hefei Hospital, Hefei Second People's Hospital, Hefei, Anhui, China
| | - Wanchun Yang
- Department of Respiratory, Anhui Medical University Affiliated Hefei Hospital, Hefei Second People's Hospital, Hefei, Anhui, China
| | - Shuyu Gui
- Department of Respiratory, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
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Zhu HP, Huang HY, Wu DM, Dong N, Dong L, Chen CS, Chen CL, Chen YG. Regulatory mechanism of NOV/CCN3 in the inflammation and apoptosis of lung epithelial alveolar cells upon lipopolysaccharide stimulation. Mol Med Rep 2019; 21:1872-1880. [PMID: 31545412 PMCID: PMC7057825 DOI: 10.3892/mmr.2019.10655] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 08/20/2019] [Indexed: 01/11/2023] Open
Abstract
Lipopolysaccharide (LPS) induces inflammatory stress and apoptosis. Pulmonary epithelial cell apoptosis has been shown to accelerate the progression of acute lung injury (ALI)/acute respiratory distress syndrome (ARDS), and is the leading cause of mortality in patients with ALI/ARDS. Nephroblastoma overexpressed (NOV; also known as CCN3), an inflammatory modulator, is reported to be a biomarker in ALI. Using an LPS-induced ALI model, we investigated the expression of CCN3 and its possible molecular mechanism involved in lung alveolar epithelial cell inflammation and apoptosis. Our data revealed that LPS treatment greatly increased the level of CCN3 in human lung alveolar type II epithelial cells (A549 cell line). The A549 cells were also transfected with a specific CCN3 small interfering RNA (siRNA). CCN3 knockdown not only largely attenuated the expression of inflammatory cytokines, interleukin (IL)-1β and transforming growth factor (TGF)-β1, but also reduced the apoptotic rate of the A549 cells and altered the expression of apoptosis-associated proteins (Bcl-2 and caspase-3). Furthermore, CCN3 knockdown greatly inhibited the activation of nuclear factor (NF)-κB p65 in the A549 cells, and TGF-β/p-Smad and NF-κB inhibitors significantly decreased the expression level of CCN3 in A549 cells. In conclusion, our data indicate that CCN3 knockdown affects the expression of downstream genes through the TGF-β/p-Smad or NF-κB pathways, leading to the inhibition of cell inflammation and apoptosis in human alveolar epithelial cells.
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Affiliation(s)
- Hai-Ping Zhu
- Department of Emergency Medicine and Chest Pain Center, Clinical Research Center for Emergency and Critical Care Medicine of Shandong, Key Laboratory of Emergency and Critical Care Medicine, Key Laboratory of Cardiopulmonary‑Cerebral Resuscitation Research, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Hui-Ya Huang
- Department of Intensive Care Unit, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Deng-Min Wu
- Department of Rehabilitation Medicine, Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Nian Dong
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Li Dong
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Cheng-Shui Chen
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Chao-Lei Chen
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Yu-Guo Chen
- Department of Emergency Medicine and Chest Pain Center, Clinical Research Center for Emergency and Critical Care Medicine of Shandong, Key Laboratory of Emergency and Critical Care Medicine, Key Laboratory of Cardiopulmonary‑Cerebral Resuscitation Research, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
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63
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TIPE2 ameliorates lipopolysaccharide-induced apoptosis and inflammation in acute lung injury. Inflamm Res 2019; 68:981-992. [PMID: 31486847 PMCID: PMC7096061 DOI: 10.1007/s00011-019-01280-6] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 08/25/2019] [Accepted: 08/29/2019] [Indexed: 01/11/2023] Open
Abstract
Objective Tumour necrosis factor-α-induced protein 8-like 2 (TIPE2) has strong anti-inflammatory properties. However, it is unknown whether increased TIPE2 is protective against lipopolysaccharide (LPS)-induced ALI. In the current study, we aimed to investigate whether increased TIPE2 can exert protective effects in a mouse model of ALI induced by LPS. Methods We administered TIPE2 adeno-associated virus (AAV-TIPE2) intratracheally into the lungs of mice. Three weeks later, ALI was induced by intratracheal injection of LPS into BALB/c mice. Twenty-four hours later, lung bronchoalveolar lavage fluid (BALF) was acquired to analyse cells and protein, arterial blood was collected for arterial blood gas analysis and the determination of pro-inflammatory factor levels, and lung issues were collected for histologic examination, transmission electron microscopy (TEM), TUNEL staining, wet/dry (W/D) weight ratio analysis, myeloperoxidase (MPO) activity analysis and blot analysis of protein expression. Results We found that TIPE2 overexpression markedly mitigated LPS-induced lung injury, which was evaluated by the deterioration of histopathology, histologic scores, the W/D weight ratio, and total protein expression in the BALF. Moreover, TIPE2 overexpression markedly attenuated lung inflammation, as evidenced by the downregulation of polymorphonuclear neutrophils (PMNs) in the BALF, lung MPO activity, and pro-inflammatory cytokine levels in the serum. Moreover, TIPE2 overexpression not only dramatically prevented LPS-induced pulmonary cell apoptosis in mice but also blocked LPS-activated JNK phosphorylation and NF-κB p65 nuclear translocation. Conclusions Our study shows that the increased expression of AAV-mediated TIPE2 in the lungs of mice inhibits acute inflammation and apoptosis and suppresses the activation of NF-κB and JNK in a murine model of ALI.
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Cui SN, Chen L, Yang YY, Wang YX, Li SN, Zhou T, Xiao HR, Qin L, Yang W, Yuan SY, Yao SL, Shang Y. Activation of death-associated protein kinase 1 promotes neutrophil apoptosis to accelerate inflammatory resolution in acute respiratory distress syndrome. J Transl Med 2019; 99:1143-1156. [PMID: 30911150 DOI: 10.1038/s41374-019-0242-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 01/30/2019] [Accepted: 02/01/2019] [Indexed: 02/07/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a uniform progression of overwhelming inflammation in lung tissue with extensive infiltration of inflammatory cells. Neutrophil apoptosis is thought to be a significant process in the control of the resolution phase of inflammation. It has been proved that 5-Aza-2'-deoxycytidine (Aza) can inhibit cancer by activating death-associated protein kinase 1 (DAPK1) to promote apoptosis. However, the effect of DAPK1 on neutrophil apoptosis is unclear, and research on the role of Aza in inflammation is lacking. Here, we investigated whether Aza can regulate DAPK1 expression to influence the fate of neutrophils in ARDS. In vitro, we stimulated neutrophil-like HL-60 (dHL-60) cells with different concentrations of Aza for different durations and used RNA interference to up- or downregulate DAPK1 expression. We observed that culturing dHL-60 cells with Aza increased apoptosis by inhibiting NF-κB activation to modulate the expression of Bcl-2 family proteins, which was closely related to the levels of DAPK1. In vivo, ARDS was evoked by intratracheal instillation of lipopolysaccharide (LPS; 3 mg/kg). One hour after LPS administration, mice were treated with Aza (1 mg/kg, i.p.). To inhibit DAPK1 expression, mice were intraperitoneally injected with a DAPK1 inhibitor. Aza treatment accelerated inflammatory resolution in LPS-induced ARDS by suppressing pulmonary edema, alleviating lung injury and decreasing the infiltration of inflammatory cells in bronchoalveolar lavage fluid (BALF). Moreover, Aza reduced the production of proinflammatory cytokines. However, administration of the DAPK1 inhibitor attenuated the protective effects of Aza. Similarly, the proapoptotic function of Aza was prevented when DAPK1 was inhibited either in vivo or in vitro. In summary, Aza promotes neutrophil apoptosis by activating DAPK1 to accelerate inflammatory resolution in LPS-induced ARDS. This study provides the first evidence that Aza prevents LPS-induced neutrophil survival by modulating DAPK1 expression.
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Affiliation(s)
- Shu-Nan Cui
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lin Chen
- Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yi-Yi Yang
- Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ya-Xin Wang
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Sheng-Nan Li
- Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ting Zhou
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hai-Rong Xiao
- Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lu Qin
- Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wen Yang
- Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shi-Ying Yuan
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. .,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Shang-Long Yao
- Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. .,Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - You Shang
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. .,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Liang GP, Xu J, Cao LL, Zeng YH, Chen BX, Yang J, Zhang ZW, Kang Y. Piezo1 induced apoptosis of type II pneumocytes during ARDS. Respir Res 2019; 20:118. [PMID: 31186017 PMCID: PMC6558715 DOI: 10.1186/s12931-019-1083-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 05/24/2019] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVE The mechanisms of lung injury in acute respiratory distress syndrome (ARDS) are not well understood.Piezo1 was recently identified as a mechanotransduction protein. The present study found the expression of Piezo1 in type II pneumocytes and investigated its role in mediating ARDS-related lung injury. METHODS Sprague-Dawley rats were used to establish an ARDS model, the expression of Piezo1,lung injuries, apoptosis as well as calcium influx were assessed. RESULTS Piezo1 was expressed in type II pneumocytes as shown by immunofluorescence staining and expression was increased in the ARDS model. Knockdown of Piezo1 reduced apoptosis which was related to the elevation of Bcl-2.Calcium influx played a vital role in Piezo1-induced apoptosis. CONCLUSION Piezo1 was expressed in type II pneumocytes. Mechanical stretch of alveoli during ARDS induced activation of the Piezo1 channel,which resulted in calcium influx. The increased intracellular Ca2+ induced the apoptosis of type II pneumocytes, which may be related to the Bcl-2 pathway.
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Affiliation(s)
- Guo-Peng Liang
- Department of Critical Care Medicine, West China School of Medicine and West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Jing Xu
- Department of Critical Care Medicine, West China School of Medicine and West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Li-Li Cao
- Chengdu Medical College, Chengdu, 610041, Sichuan, China
| | - Yi-Hua Zeng
- Department of Respiratory Critical Care Medicine, West China School of Medicine and West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Bai-Xu Chen
- Department of Critical Care Medicine, West China School of Medicine and West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Jing Yang
- Department of Critical Care Medicine, West China School of Medicine and West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhong-Wei Zhang
- Department of Critical Care Medicine, West China School of Medicine and West China Hospital, Sichuan University, Chengdu, 610041, China.
| | - Yan Kang
- Department of Critical Care Medicine, West China School of Medicine and West China Hospital, Sichuan University, Chengdu, 610041, China.
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Galani V, Varouktsi A, Papadatos SS, Mitselou A, Sainis I, Constantopoulos S, Dalavanga Y. The role of apoptosis defects in malignant mesothelioma pathogenesis with an impact on prognosis and treatment. Cancer Chemother Pharmacol 2019; 84:241-253. [DOI: 10.1007/s00280-019-03878-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 05/18/2019] [Indexed: 01/09/2023]
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Li YZ, Chen JH, Tsai CF, Yeh WL. Anti-inflammatory Property of Imperatorin on Alveolar Macrophages and Inflammatory Lung Injury. JOURNAL OF NATURAL PRODUCTS 2019; 82:1002-1008. [PMID: 30892032 DOI: 10.1021/acs.jnatprod.9b00145] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Imperatorin is one of the furanocoumarin derivatives and exists in many medicinal herbs with anticancer, antiviral, antibacterial, and antihypertensive activities. In this study, we examined the anti-inflammatory effects of imperatorin on inflammation-associated lung diseases. Imperatorin reduced iNOS and COX-2 expression and also IL-6 and TNFα production enhanced by zymosan. Imperatorin also inhibited the signaling pathways of JAK/STAT and NF-κB. Moreover, in vivo study also revealed that zymosan-induced immune cell infiltration, pulmonary fibrosis, and edema were relieved by imperatorin in mice. We found that imperatorin exerts anti-inflammatory effects that are associated with amelioration of lung inflammation, edema, and rapid fibrosis. Studies on alveolar macrophages also reveal that imperatorin reduced the production of pro-inflammatory mediators and cytokines and inhibited pro-inflammatory JAK1/STAT3 and NF-κB signaling pathways. These results indicate that imperatorin may be a potential anti-inflammatory agent for inflammatory-associated lung diseases.
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Affiliation(s)
- Ya-Zhen Li
- Department of Biological Science and Technology , China Medical University , No. 91 Hsueh-Shih Road , Taichung , 40402 , Taiwan
| | - Jia-Hong Chen
- Department of General Surgery , Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation , Taichung , 42743 , Taiwan
| | - Cheng-Fang Tsai
- Department of Biotechnology , Asia University , No. 500 Lioufeng Road , Taichung , 41354 , Taiwan
| | - Wei-Lan Yeh
- Institute of New Drug Development , China Medical University , No. 91 Hsueh-Shih Road , Taichung , 40402 , Taiwan
- Research Center for Tumor Medical Science , China Medical University , No. 91 Hsueh-Shih Road , Taichung , 40402 , Taiwan
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Zhang W, Zhang Y, He Y, Wang X, Fang Q. Lipopolysaccharide mediates time-dependent macrophage M1/M2 polarization through the Tim-3/Galectin-9 signalling pathway. Exp Cell Res 2019; 376:124-132. [DOI: 10.1016/j.yexcr.2019.02.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 02/09/2019] [Indexed: 11/25/2022]
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Kosutova P, Mikolka P, Kolomaznik M, Balentova S, Adamkov M, Calkovska A, Mokra D. Reduction of lung inflammation, oxidative stress and apoptosis by the PDE4 inhibitor roflumilast in experimental model of acute lung injury. Physiol Res 2019; 67:S645-S654. [PMID: 30607971 DOI: 10.33549/physiolres.934047] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Damage of alveolar-capillary barrier, inflammation, oxidative injury, and lung cell apoptosis represent the key features of acute lung injury (ALI). This study evaluated if selective phosphodiesterase (PDE)-4 inhibitor roflumilast can reduce the mentioned changes in lavage-induced model of ALI. Rabbits with ALI were divided into 2 groups: ALI without therapy (A group) and ALI treated with roflumilast i.v. (1 mg/kg; A+R group). One group of healthy animals without ALI served as ventilated controls (C group). All animals were oxygen-ventilated for further 4 h. At the end of experiment, total and differential counts of cells in bronchoalveolar lavage fluid (BALF) and total and differential counts of white blood cells were estimated. Lung edema formation was assessed from determination of protein content in BALF. Pro-inflammatory cytokines (TNFalpha, IL-6 and IL-8) and markers of oxidation (3-nitrotyrosine, thiobarbituric-acid reactive substances) were detected in the lung tissue and plasma. Apoptosis of lung cells was investigated immunohistochemically. Treatment with roflumilast reduced leak of cells, particularly of neutrophils, into the lung, decreased concentrations of cytokines and oxidative products in the lung and plasma, and reduced lung cell apoptosis and edema formation. Concluding, PDE4 inhibitor roflumilast showed potent anti-inflammatory actions in this model of ALI.
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Affiliation(s)
- P Kosutova
- Biomedical Center Martin and Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia.
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Feng Y, Fang Z, Liu B, Zheng X. p38MAPK plays a pivotal role in the development of acute respiratory distress syndrome. Clinics (Sao Paulo) 2019; 74:e509. [PMID: 31411275 PMCID: PMC6683303 DOI: 10.6061/clinics/2019/e509] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 04/25/2019] [Indexed: 01/11/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a life-threatening illness characterized by a complex pathophysiology, involving not only the respiratory system but also nonpulmonary distal organs. Although advances in the management of ARDS have led to a distinct improvement in ARDS-related mortality, ARDS is still a life-threatening respiratory condition with long-term consequences. A better understanding of the pathophysiology of this condition will allow us to create a personalized treatment strategy for improving clinical outcomes. In this article, we present a general overview p38 mitogen-activated protein kinase (p38MAPK) and recent advances in understanding its functions. We consider the potential of the pharmacological targeting of p38MAPK pathways to treat ARDS.
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Affiliation(s)
- Ying Feng
- Department of Intensive Care Unit, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei Province, China
- Institute of Biomedical Research, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei Province, China
- *Corresponding author. E-mail:
| | - Zhicheng Fang
- Department of Intensive Care Unit, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei Province, China
- *Corresponding author. E-mail:
| | - Boyi Liu
- Department of Intensive Care Unit, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei Province, China
| | - Xiang Zheng
- Department of Intensive Care Unit, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei Province, China
- *Corresponding author. E-mail:
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Abstract
Regulated cell death is a major mechanism to eliminate damaged, infected, or superfluous cells. Previously, apoptosis was thought to be the only regulated cell death mechanism; however, new modalities of caspase-independent regulated cell death have been identified, including necroptosis, pyroptosis, and autophagic cell death. As an understanding of the cellular mechanisms that mediate regulated cell death continues to grow, there is increasing evidence that these pathways are implicated in the pathogenesis of many pulmonary disorders. This review summarizes our understanding of regulated cell death as it pertains to the pathogenesis of chronic obstructive pulmonary disease, asthma, idiopathic pulmonary fibrosis, acute respiratory distress syndrome, and pulmonary arterial hypertension.
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Affiliation(s)
- Maor Sauler
- Department of Medicine, Yale School of Medicine, New Haven, Connecticut 06520, USA;
| | - Isabel S Bazan
- Department of Medicine, Yale School of Medicine, New Haven, Connecticut 06520, USA;
| | - Patty J Lee
- Department of Medicine, Yale School of Medicine, New Haven, Connecticut 06520, USA;
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Zhang Q, Zhu S, Cheng X, Lu C, Tao W, Zhang Y, William BC, Cao X, Yi S, Liu Y, Zhao Y, Luo Y. Euphorbia factor L2 alleviates lipopolysaccharide-induced acute lung injury and inflammation in mice through the suppression of NF-κB activation. Biochem Pharmacol 2018; 155:444-454. [DOI: 10.1016/j.bcp.2018.07.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 07/18/2018] [Indexed: 11/30/2022]
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Gouda MM, Shaikh SB, Bhandary YP. Inflammatory and Fibrinolytic System in Acute Respiratory Distress Syndrome. Lung 2018; 196:609-616. [PMID: 30121847 DOI: 10.1007/s00408-018-0150-6] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Accepted: 08/13/2018] [Indexed: 12/29/2022]
Abstract
Acute respiratory distress syndrome (ARDS) is the most advanced form of acute lung injury (ALI). This is characterized by bilateral pulmonary infiltrates and severe hypoxemia. According to Berlin definition of ARDS, this is defined based on the timings, radiographic changes, edema formation, and severity on the PaO2/FiO2 ratio. During ARDS, the loss of integrity of the epithelium causes the septic shock. The degree of epithelial injury is the major prognostic marker of ARDS. In addition to this, inflammatory cell migration, fibro-proliferation, and activation of apoptosis also play an important role in the pathophysiology of ARDS. The alveolar epithelial cell is the prime target during injury where this cell either undergo apoptosis or epithelial-mesenchymal transition (EMT). Injury to the AECs triggers the changes in the DNA fragmentation and activation of certain apoptotic markers such as caspases at the same time some cells undergo biochemical changes and loses its epithelial morphology as well epithelial biomarkers and gain mesenchymal biomarkers and morphology. In both the cases, the fibrinolytic system plays an important role in maintaining the integrity of the disease process efficiently. This review highlights the research evidence of apoptosis and EMT in lung development, injury and its prognosis in ARDS thereby to develop an effective strategy for the treatment of ARDS.
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Affiliation(s)
- Mahesh Manjunath Gouda
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Deralakatte, Mangalore, Karnataka, 575018, India
| | - Sadiya B Shaikh
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Deralakatte, Mangalore, Karnataka, 575018, India
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Sergio LPDS, Thomé AMC, Trajano LADSN, Mencalha AL, da Fonseca ADS, de Paoli F. Photobiomodulation prevents DNA fragmentation of alveolar epithelial cells and alters the mRNA levels of caspase 3 and Bcl-2 genes in acute lung injury. Photochem Photobiol Sci 2018; 17:975-983. [PMID: 29922788 DOI: 10.1039/c8pp00109j] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Acute respiratory distress syndrome (ARDS) and acute lung injury (ALI) are defined as pulmonary inflammation that could occur from sepsis and lead to pulmonary permeability and alveolar edema making them life-threatening diseases. Photobiomodulation (PBM) properties have been widely described in the literature in several inflammatory diseases; although the mechanisms of action are not always clear, this could be a possible treatment for ARDS/ALI. Thus, the aim of this study was to evaluate the mRNA levels from caspase-3 and BCL-2 genes and DNA fragmentation in lung tissue from Wistar rats affected by ALI and subjected to photobiomodulation by exposure to a low power infrared laser (808 nm; 100 mW; 3.571 W cm-2; four points per lung). Adult male Wistar rats were randomized into 6 groups (n = 5, for each group): control, PBM10 (10 J cm-2, 2 J and 2 seconds), PBM20 (20 J cm-2, 5 J and 5 seconds), ALI, ALI + PBM10 and ALI + PBM20. ALI was induced by intraperitoneal Escherichia coli lipopolysaccharide injection. Lung samples were collected and divided for mRNA expression of caspase-3 and Bcl-2 and DNA fragmentation quantifications. Data show that caspase-3 mRNA levels are reduced and Bcl-2 mRNA levels increased in ALI after low power infrared laser exposure when compared to the non-exposed ALI group. DNA fragmentation increased in inflammatory infiltrate cells and reduced in alveolar cells. Our research shows that photobiomodulation can alter relative mRNA levels in genes involved in the apoptotic process and DNA fragmentation in inflammatory and alveolar cells after lipopolysaccharide-induced acute lung injury. Also, inflammatory cell apoptosis is part of the photobiomodulation effects induced by exposure to a low power infrared laser.
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Affiliation(s)
- Luiz Philippe da Silva Sergio
- Departamento de Biofísica e Biometria, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Avenida 28 de Setembro, 87, fundos, Vila Isabel, Rio de Janeiro, 20551030, Brazil.
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Shaaban AA, El-Kashef DH, Hamed MF, El-Agamy DS. Protective effect of pristimerin against LPS-induced acute lung injury in mice. Int Immunopharmacol 2018; 59:31-39. [PMID: 29621734 DOI: 10.1016/j.intimp.2018.03.033] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Revised: 03/29/2018] [Accepted: 03/29/2018] [Indexed: 12/11/2022]
Abstract
Pristimerin (Pris) is a triterpenoid derivative obtained from Celastraceae and Hippocrateaceae families. This compound has been extensively tested for its potent anti-cancer activity against different types of tumors. However, its effects against acute lung injury (ALI) remain to be investigated. This study explored the efficacy of Pris to protect against lipopolysaccharide (LPS)-induced ALI and its possible pathways. Results have shown that Pris possesses potent protective activity against LPS-induced acute lung damage. It significantly decreased pulmonary edema as presented by significant decrease in lung W/D ratio and in protein content. Pris attenuated LPS-induced inflammatory cell infiltration into the lung tissue and suppressed the activity of myeloperoxidase in lung. LPS-induced histopathological lesions were significantly improved via Pris pretreatment. Pris exhibited not only inhibition of LPS-induced oxidative stress, but also enhancement of the suppressed antioxidant capacity of the lung tissue. The anti-inflammatory activity of Pris against LPS-induced ALI was clearly evident via attenuation of the levels of pro-inflammatory cytokines namely, tumor necrosis factor-α and interleukin-6. Similarly, Pris inhibited LPS-induced elevation of pro-apoptotic protein, Bax, and caspase-3. Pris also increased the diminished level of Bcl2 induced by LPS. Collectively, Pris exerted protective activity against LPS-induced ALI via anti-oxidant, anti-inflammatory and anti-apoptotic pathways.
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Affiliation(s)
- Ahmed A Shaaban
- Pharmacology and Toxicology Dept., Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt; Faculty of Pharmacy, Aqaba University of Technology, Jordan.
| | - Dalia H El-Kashef
- Pharmacology and Toxicology Dept., Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt.
| | - Mohamed F Hamed
- Pathology Dept., Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Dina S El-Agamy
- Department of Pharmacology and Toxicology, College of Pharmacy, Taibah University, Al-Madinah Al-Munawwarah, 30001, Saudi Arabia; Pharmacology and Toxicology Dept., Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt.
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76
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Chen L, Li W, Qi D, Wang D. Lycium barbarum polysaccharide protects against LPS-induced ARDS by inhibiting apoptosis, oxidative stress, and inflammation in pulmonary endothelial cells. Free Radic Res 2018; 52:480-490. [PMID: 29502482 DOI: 10.1080/10715762.2018.1447105] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Lan Chen
- Department of Respiratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wen Li
- Department of Respiratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Di Qi
- Department of Respiratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Daoxin Wang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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李 雯, 戚 迪, 陈 兰, 赵 燕, 邓 旺, 唐 旭, 王 导. [Vaspin protects against lipopolysaccharide-induced acute respiratory distress syndrome in mice by inhibiting inflammation and protecting vascular endothelium via PI3K/Akt signal pathway]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2018; 38:283-288. [PMID: 29643033 PMCID: PMC6744174 DOI: 10.3969/j.issn.1673-4254.2018.03.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To investigate the effects of Vaspin on lipopolysaccharide (LPS)-induced acute respiratory distress syndrome (ARDS) in mice and explore the possible mechanism. METHODS Forty male C57B/L6 mice were randomized equally into control group, LPS group, Vaspin group and wortmannin group with corresponding treatments. The pathological changes of the lung tissues were evaluated by HE staining, and the severity of pulmonary edema was measured according to the wet/dry ratio (W/D) of the lung tissue. The lung permeability was evaluated by detecting total protein concentrations in the bronchoalveolar lavage fluid (BALF) using bicinchoninic acid (BCA) assay. Myeloperoxidase (MPO) activity in the lung tissue was detected using a MPO assay kit, and the levels of interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) in the lungs were measured using ELISA. Immunohistochemical staining was performed to detect the expression of vascular cell adhesion molecule-1 (VCAM-1) and Western blotting was used to detect the protein expressions of cleaved caspase-3 and p-Akt in the lung tissues. RESULTS Compared with the control group, the mice in LPS group displayed typical ARDS pathological changes in the lungs with significantly increased W/D, total protein concentrations in BALF, lung MPO activity, levels of IL-1β and TNF-α, and pulmonary expressions of VCAM-1 and cleaved caspase-3 (P<0.05) but decreased expression of p-Akt (P<0.05). These changes induced by LPS were significantly alleviated by the administration of Vaspin (P<0.05). The protective effects of Vaspin against ARDS were obviously attenuated by the PI3K inhibitor wortmannin (P<0.05). CONCLUSION Vaspin protects against LPS-induced ARDS in mice possibly by inhibiting inflammation and protecting vascular endothelium through upregulation of the PI3K/Akt signal pathway.
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Affiliation(s)
- 雯 李
- />重庆医科大学附属第二医院呼吸内科,重庆 400010Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - 迪 戚
- />重庆医科大学附属第二医院呼吸内科,重庆 400010Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - 兰 陈
- />重庆医科大学附属第二医院呼吸内科,重庆 400010Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - 燕 赵
- />重庆医科大学附属第二医院呼吸内科,重庆 400010Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - 旺 邓
- />重庆医科大学附属第二医院呼吸内科,重庆 400010Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - 旭毛 唐
- />重庆医科大学附属第二医院呼吸内科,重庆 400010Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - 导新 王
- />重庆医科大学附属第二医院呼吸内科,重庆 400010Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
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Yang CY, Chen CS, Yiang GT, Cheng YL, Yong SB, Wu MY, Li CJ. New Insights into the Immune Molecular Regulation of the Pathogenesis of Acute Respiratory Distress Syndrome. Int J Mol Sci 2018; 19:ijms19020588. [PMID: 29462936 PMCID: PMC5855810 DOI: 10.3390/ijms19020588] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 02/11/2018] [Accepted: 02/14/2018] [Indexed: 12/11/2022] Open
Abstract
Acute respiratory distress syndrome is an inflammatory disease characterized by dysfunction of pulmonary epithelial and capillary endothelial cells, infiltration of alveolar macrophages and neutrophils, cell apoptosis, necroptosis, NETosis, and fibrosis. Inflammatory responses have key effects on every phase of acute respiratory distress syndrome. The severe inflammatory cascades impaired the regulation of vascular endothelial barrier and vascular permeability. Therefore, understanding the relationship between the molecular regulation of immune cells and the pulmonary microenvironment is critical for disease management. This article reviews the current clinical and basic research on the pathogenesis of acute respiratory distress syndrome, including information on the microenvironment, vascular endothelial barrier and immune mechanisms, to offer a strong foundation for developing therapeutic interventions.
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Affiliation(s)
- Chin-Yao Yang
- Division of Chest Medicine, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan.
| | - Chien-Sheng Chen
- Department of Emergency Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei 231, Taiwan.
- Department of Emergency Medicine, School of Medicine, Tzu Chi University, Hualien 970, Taiwan.
| | - Giou-Teng Yiang
- Department of Emergency Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei 231, Taiwan.
- Department of Emergency Medicine, School of Medicine, Tzu Chi University, Hualien 970, Taiwan.
| | - Yeung-Leung Cheng
- Division of Thoracic Surgery, Department of Surgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 231, Taiwan.
- School of Surgery, Tzu Chi University, Hualien 970, Taiwan.
| | - Su-Boon Yong
- Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan.
- Division of Pediatric Allergy, Immunology and Rheumatology, Department of Pediatrics, Show Chwan Memorial Hospital, Changhua 500, Taiwan.
- Department of Nursing, Meiho University, Pingtung 912, Taiwan.
| | - Meng-Yu Wu
- Department of Emergency Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei 231, Taiwan.
- Department of Emergency Medicine, School of Medicine, Tzu Chi University, Hualien 970, Taiwan.
| | - Chia-Jung Li
- Research Assistant Center, Show Chwan Memorial Hospital, Changhua 500, Taiwan.
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Maknitikul S, Luplertlop N, Chaisri U, Maneerat Y, Ampawong S. Featured Article: Immunomodulatory effect of hemozoin on pneumocyte apoptosis via CARD9 pathway, a possibly retarding pulmonary resolution. Exp Biol Med (Maywood) 2018; 243:395-407. [PMID: 29402133 DOI: 10.1177/1535370218757458] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Plasmodium falciparum, the most virulent malaria parasite species, causes severe symptoms especially acute lung injury (ALI), of which characterized by alveolar epithelium and endothelium destruction and accelerated to blood-gas-barrier breakdown. Parasitized erythrocytes, endothelial cells, monocytes, and cytokines are all involved in this mechanism, but hemozoin (HZ), the parasitic waste from heme detoxification, also mainly contributes. In addition, it is not clear why type II pneumocyte proliferation, alveolar restorative stage, is rare in malaria-associated ALI. To address this, in vitro culture of A549 cells with Plasmodium HZ or with interleukin (IL)-1β triggered by HZ and monocytes (HZ-IL-1β) was conducted to determine their alveolar apoptotic effect using ethidium bromide/acridine orange staining, annexin-V-FITC/propidium iodide staining, and electron mircroscopic study. Caspase recruitment domain-containing protein 9 ( CARD9), the apoptotic regulator gene, and IL-1β were quantified by reverse-transcriptase PCR. Junctional cellular defects were characterized by immunohistochemical staining of E-cadherin. The results revealed that cellular apoptosis and CARD9 expression levels were extremely high 24 h after induction by HZ-IL-1β when compared to the HZ- and non-treated groups. E-cadherin was markedly down-regulated by HZ-IL-1β and HZ treatments. CARD9 expression was positively correlated with IL-1β expression and the number of apoptotic cells. Interestingly, the localization of HZ in the vesicular surfactant of apoptotic pneumocyte was also identified and submitted to be a cause of alveolar resolution abnormality. Thus, HZ triggers monocytes to produce IL-1β and induces pneumocyte type II apoptosis through CARD9 pathway in association with down-regulated E-cadherin, which probably impairs alveolar resolution in malaria-associated ALI. Impact statement The present work shows the physical and immunomodulatory properties of hemozoin on the induction of pneumocyte apoptosis in relation to IL-1β production through the CARD9 pathway. This occurrence may be a possible pathway for the retardation of lung resolution leading to blood-gas-barrier breakdown. Our findings lead to the understanding of the host-parasite relationship focusing on the dysfunction in ALI induced by HZ, a possible pathway of the recovering lung epithelial retardation in malaria-associated ARDS.
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Affiliation(s)
- Sitang Maknitikul
- 1 Department of Tropical Pathology, 115374 Faculty of Tropical Medicine, Mahidol University , Ratchathewi, Bangkok 10400, Thailand
| | - Natthanej Luplertlop
- 2 Department of Microbiology and Immunology, 115374 Faculty of Tropical Medicine, Mahidol University , Ratchathewi, Bangkok 10400, Thailand
| | - Urai Chaisri
- 1 Department of Tropical Pathology, 115374 Faculty of Tropical Medicine, Mahidol University , Ratchathewi, Bangkok 10400, Thailand
| | - Yaowapa Maneerat
- 1 Department of Tropical Pathology, 115374 Faculty of Tropical Medicine, Mahidol University , Ratchathewi, Bangkok 10400, Thailand
| | - Sumate Ampawong
- 1 Department of Tropical Pathology, 115374 Faculty of Tropical Medicine, Mahidol University , Ratchathewi, Bangkok 10400, Thailand
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80
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Liu Y, Guan H, Zhang JL, Zheng Z, Wang HT, Tao K, Han SC, Su LL, Hu D. Acute downregulation of miR-199a attenuates sepsis-induced acute lung injury by targeting SIRT1. Am J Physiol Cell Physiol 2018; 314:C449-C455. [PMID: 29351405 DOI: 10.1152/ajpcell.00173.2017] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
MicroRNA-199a (miR-199a) is a novel gene regulator with an important role in inflammation and lung injury. However, its role in the pathogenesis of sepsis-induced acute respiratory distress syndrome (ARDS) is currently unknown. Our study explored the role of miR-199a in sepsis-induced ARDS and its mechanism of action. First, we found that LPS could upregulate miR-199a in alveolar macrophages. Downregulation of miR-199a inhibited the upregulation of inflammatory cytokines in alveolar macrophages and induced the remission of histopathologic changes, the reduction of proinflammatory cytokines, and the upregulation of apoptosis protein expression in an ARDS lung, showing a protective role for miR-199a. We further identified sirtuin 1 (SIRT1) as a direct target of miR-199a in alveolar macrophages, and the expression of SIRT1 was negatively correlated with the level of miR-199a. The protective role of miR-199a downregulation in LPS-stimulated alveolar macrophages and sepsis-induced ARDS could be attenuated by SIRT1 inhibitor. Taken together, these results indicate that downregulation of miR-199a might protect lung tissue against sepsis-induced ARDS by upregulation of SIRT1 through the suppression of excessive inflammatory responses and the inhibition of cellular apoptosis in lung tissue, suggesting its potential therapeutic effects on sepsis-induced ARDS.
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Affiliation(s)
- Yang Liu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, The Fourth Military Medical University , Xi'an, Shaanxi , China
| | - Hao Guan
- Department of Burns and Cutaneous Surgery, Xijing Hospital, The Fourth Military Medical University , Xi'an, Shaanxi , China
| | - Ju-Lei Zhang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, The Fourth Military Medical University , Xi'an, Shaanxi , China
| | - Zhao Zheng
- Department of Burns and Cutaneous Surgery, Xijing Hospital, The Fourth Military Medical University , Xi'an, Shaanxi , China
| | - Hong-Tao Wang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, The Fourth Military Medical University , Xi'an, Shaanxi , China
| | - Ke Tao
- Department of Burns and Cutaneous Surgery, Xijing Hospital, The Fourth Military Medical University , Xi'an, Shaanxi , China
| | - Shi-Chao Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, The Fourth Military Medical University , Xi'an, Shaanxi , China
| | - Lin-Lin Su
- Department of Burns and Cutaneous Surgery, Xijing Hospital, The Fourth Military Medical University , Xi'an, Shaanxi , China
| | - Dahai Hu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, The Fourth Military Medical University , Xi'an, Shaanxi , China
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Zhu XD, Lei XP, Dong WB. Resveratrol as a potential therapeutic drug for respiratory system diseases. DRUG DESIGN DEVELOPMENT AND THERAPY 2017; 11:3591-3598. [PMID: 29290681 PMCID: PMC5736354 DOI: 10.2147/dddt.s148868] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Respiratory system diseases are common and major ailments that seriously endanger human health. Resveratrol, a polyphenolic phytoalexin, is considered an anti-inflammatory, antioxidant, and anticancer agent. Thanks to its wide range of biological activities, resveratrol has become a hotspot in many fields, including respiratory system diseases. Indeed, research has demonstrated that resveratrol is helpful to relieve pulmonary function in the general population. Meanwhile, growing evidence indicates that resveratrol plays a protective role in respiratory system diseases. This review aimed to summarize the main protective effects of resveratrol in respiratory system diseases, including its anti-inflammatory, antiapoptotic, antioxidant, antifibrotic, antihypertensive, and anticancer activities. We found that resveratrol plays a protective role in the respiratory system through a variety of mechanisms, and so it may become a new drug for the treatment of respiratory system diseases.
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Affiliation(s)
- Xiao-Dan Zhu
- Department of Newborn Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People's Republic of China
| | - Xiao-Ping Lei
- Department of Newborn Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People's Republic of China
| | - Wen-Bin Dong
- Department of Newborn Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People's Republic of China
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Kang EK, Kim HS. The effects of hydrogen peroxide and lipopolysaccharide on rat alveolar L2 cells. Exp Lung Res 2017; 43:293-300. [PMID: 29140130 DOI: 10.1080/01902148.2017.1368738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE This study aimed to investigate differential cell responses of alveolar epithelial cells (AECs) after treatments with lipopolysaccharide (LPS) and hydrogen peroxide (H2O2) to mimic the exposure to inflammation and oxidative stress and the mechanisms of a double-hit model of apoptosis. MATERIALS AND METHODS AECs were cultured and treated with combinations of 1 μg/mL of LPS and 500 μM H2O2 as follows: LPS-only at 0 h, LPS at 0 h with H2O2 at 6 h (LPS + H2O2), H2O2-only at 0 h, H2O2 at 0 h with LPS at 6 h (H2O2 + LPS), and control. We investigated mRNA expression (TNF-α, Fas, Fas ligand, Bax, Bcl-2, Caspase-7), protein expression (Fas, Bax, Bcl-2, Caspase-7) and apoptosis (Caspase-3 activity, TUNEL assay) at 0, 3, 6, 9, 12, and 24 h. RESULTS In the H2O2 + LPS group, the Caspase-7, and Fas mRNA levels were significantly higher than the other groups at 9 h and 12 h, and Bax was higher at 12 h. The Bax/Bcl-2 protein expression ratio was significantly higher in the H2O2 + LPS group than that of the other groups at 12h and 24h. Apoptotic index was highest in the H2O2 + LPS group at 24 h. CONCLUSIONS The sequence of stimulation may modify the cell response in rat AECs. The results suggest that previous oxidative stress and subsequent LPS-induced inflammation primarily influence apoptosis of L2 cells by up-regulation of cell signaling.
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Affiliation(s)
- Eun Kyeong Kang
- a Depart of Pediatrics , Dongguk University College of Medicine and Ilsan Hospital , Goyang , Gyung-gi , Republic of Korea.,b Depart of Pediatrics , Seoul National University College of Medicine , Seoul , Republic of Korea
| | - Han Suk Kim
- b Depart of Pediatrics , Seoul National University College of Medicine , Seoul , Republic of Korea
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Jia H, Zhan L, Wang X, He X, Chen G, Zhang Y, Feng Y, Wei Y, Zhang Y, Jing Z. Transcriptome analysis of sheep oral mucosa response to Orf virus infection. PLoS One 2017; 12:e0186681. [PMID: 29073164 PMCID: PMC5658058 DOI: 10.1371/journal.pone.0186681] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 10/05/2017] [Indexed: 01/15/2023] Open
Abstract
Contagious ecthyma is a highly contagious disease with worldwide distribution, which is caused by the Orf virus (ORFV) belonging to the Parapoxvirus. To study the alteration of host gene expression in response to ORFV infection at the transcriptional level, several young small-tailed Han sheep were inoculated with ORFV, and their oral mucosa tissue samples (T0, T3, T7 and T15) were collected on day 0, 3, 7 and 15 after ORFV infection respectively. RNA-seq transcriptome comparisons were performed, showing that 1928, 3219 and 2646 differentially expressed genes (DEGs) were identified among T3 vs. T0, T7 vs. T0, and T15 vs. T0 respectively. Gene Ontology (GO) analyses of the DEGs from these comparisons, revealed that ORFV might provoke vigorous immune response of the host cells during the early stage of infection. Moreover, GO and network analysis showed that positive and negative regulative mechanisms of apoptosis were integrated in the host cells through up or down-regulating the expression level of DEGs involved in apoptotic pathways, in order to reach a homeostasis of oral mucosa tissues during the exposure to ORFV infection. In conclusion, our study for the first time describes the direct effects of ORFV on the global host gene expression of its host using high-throughput RNA sequencing, which provides a resource for future characterizing the interaction mechanism between the mammalian host and ORFV.
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Affiliation(s)
- Huaijie Jia
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Leilei Zhan
- Center for Genome Analysis, ABLife Inc., Wuhan, Hubei, China
| | - Xiaoxia Wang
- School of Public Health, Faculty of Medicine, Lanzhou University, Lanzhou, Gansu, China
| | - Xiaobing He
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Guohua Chen
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Yu Zhang
- Center for Genome Analysis, ABLife Inc., Wuhan, Hubei, China
| | - Yuan Feng
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Yaxun Wei
- Center for Genome Analysis, ABLife Inc., Wuhan, Hubei, China
| | - Yi Zhang
- Center for Genome Analysis, ABLife Inc., Wuhan, Hubei, China
- Laboratory for Genome Regulation and Human Health, ABLife Inc., Wuhan, Hubei, China
| | - Zhizhong Jing
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
- * E-mail:
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Qi D, Wang D, Zhang C, Tang X, He J, Zhao Y, Deng W, Deng X. Vaspin protects against LPS‑induced ARDS by inhibiting inflammation, apoptosis and reactive oxygen species generation in pulmonary endothelial cells via the Akt/GSK‑3β pathway. Int J Mol Med 2017; 40:1803-1817. [PMID: 29039444 PMCID: PMC5716428 DOI: 10.3892/ijmm.2017.3176] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 09/27/2017] [Indexed: 11/06/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) is characterized by uncontrolled extravasation of protein-rich fluids, which is caused by disruption and dysfunction of the barrier of pulmonary endothelial cells (ECs). Visceral adipose tissue-derived serine protease inhibitor (vaspin) is a novel adipokine with pleiotropic properties, which has been reported to exert beneficial effects against obesity-associated systemic vascular diseases; however, its effects on ARDS remain unknown. In the present study, mice were subjected to systemic administration of adenoviral vector expressing vaspin (Ad-vaspin) to examine its effects on lipopolysaccharide (LPS)-induced ARDS in vivo. Histological analysis was then conducted, and cytokine [tumor necrosis factor (TNF)-α, interleukin (IL)-6 and IL-10] levels, and intercellular cell adhesion molecule-1 (ICAM-1) and adherens junctions (AJs) expression were detected. In addition, human pulmonary microvascular ECs (HPMECs) were treated with recombinant human (rh)-vaspin to further investigate its molecular basis and underlying mechanism. The mRNA expression levels of inflammatory cytokines (TNF-α and IL-6) and endothelial-specific adhesion markers [vascular cell adhesion molecule-1 and E-selectin], activation of nuclear factor-κB, and cell viability and apoptosis were then examined. Furthermore, the expression of AJs and organization of the cytoskeleton, as well as expression and activity of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase and generation of reactive oxygen species (ROS) were determined. The results indicated that Ad-vaspin protected against LPS-induced ARDS by alleviating the pulmonary inflammatory response and pulmonary EC barrier dysfunction in mice, which was accompanied by activation of the protein kinase B (Akt)/glycogen synthase kinase (GSK)-3β pathway. In addition, pretreatment of HPMECs with rh-vaspin attenuated inflammation, apoptosis and ROS generation without alterations in AJs and cytoskeletal organization following LPS insult, which was accompanied by activation of the Akt/GSK3β pathway. In conclusion, the present study demonstrated that vaspin protects against LPS-induced ARDS by reversing EC barrier dysfunction via the suppression of inflammation, apoptosis and ROS production in pulmonary ECs, at least partially via activation of the Akt/GSK3β pathway. These findings provide evidence of a causal link between vaspin and EC dysfunction in ARDS, and suggest a potential therapeutic intervention for patients with ARDS.
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Affiliation(s)
- Di Qi
- Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Daoxin Wang
- Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Chunrong Zhang
- Department of Emergency, Yongchuan Affiliated Hospital of Chongqing Medical University, Chongqing 402160, P.R. China
| | - Xumao Tang
- Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Jing He
- Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Yan Zhao
- Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Wang Deng
- Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Xinyu Deng
- Department of Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
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85
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Abstract
Acute lung injury in the preterm newborns can originate from prematurity of the lung and insufficient synthesis of pulmonary surfactant. This situation is known as respiratory distress syndrome (RDS). In the term neonates, the respiratory insufficiency is related to a secondary inactivation of the pulmonary surfactant, for instance, by action of endotoxins in bacterial pneumonia or by effects of aspirated meconium. The use of experimental models of the mentioned situations provides new information on the pathophysiology of these disorders and offers unique possibility to test novel therapeutic approaches in the conditions which are very similar to the clinical syndromes. Herewith we review the advantages and limitations of the use of experimental models of RDS and meconium aspiration syndrome (MAS) and their value for clinics.
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Affiliation(s)
- D. MOKRA
- Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
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86
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Jiang K, Zhang T, Yin N, Ma X, Zhao G, Wu H, Qiu C, Deng G. Geraniol alleviates LPS-induced acute lung injury in mice via inhibiting inflammation and apoptosis. Oncotarget 2017; 8:71038-71053. [PMID: 29050341 PMCID: PMC5642616 DOI: 10.18632/oncotarget.20298] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Accepted: 07/19/2017] [Indexed: 12/28/2022] Open
Abstract
Geraniol (GOH), a special type of acyclic monoterpene alcohol, has been widely used to treat many diseases associated with inflammation and apoptosis. Acute lung injury (ALI) is a common clinical disease in humans characterized by pulmonary inflammation and apoptosis. In the present study, we investigated the protective effects of GOH in a mouse model of ALI induced by the intranasal administration of lipopolysaccharide (LPS) and elucidated the underlying molecular mechanisms in RAW 264.7 cells. In vivo, GOH treatment markedly ameliorated pathological injury and pulmonary cell apoptosis and reduced the wet/dry (W/D) weight ratio of lungs, myeloperoxidase (MPO) activity and the production of pro-inflammatory cytokines (IL-1β, IL-6, and TNF-α). In vitro, the levels of pro-inflammatory cytokines, iNOS and COX-2 were significantly increased in LPS-stimulated RAW 264.7 cells, an effect that was decreased by GOH treatment. Moreover, GOH treatment dramatically reduced the expression of Toll-like receptor 4 (TLR4) and then prevented the nuclear factor-κB (NF-κB) activation. GOH treatment also promoted anti-apoptotic Bcl-2 expression and inhibited pro-apoptotic Bax and Caspase-3 expression. Furthermore, knockdown of TLR4 expression exerted a similar effect and inhibited the phosphorylation of p65, as well as the Bax and Caspase-3 expression. Taken together, these results suggest that GOH treatment alleviates LPS-induced ALI via inhibiting pulmonary inflammation and apoptosis, a finding that might be associated with the inhibition of TLR4-mediated NF-κB and Bcl-2/Bax signalling pathways.
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Affiliation(s)
- Kangfeng Jiang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Tao Zhang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Nannan Yin
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Xiaofei Ma
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Gan Zhao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Haichong Wu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Changwei Qiu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Ganzhen Deng
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
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87
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Yang Y, Zhang T, Cao H, Yu D, Zhang T, Zhao S, Jing X, Song L, Liu Y, Che R, Liu X, Li D, Ren G. The pharmacological efficacy of the anti-IL17 scFv and sTNFR1 bispecific fusion protein in inflammation mouse stimulated by LPS. Biomed Pharmacother 2017; 92:905-912. [DOI: 10.1016/j.biopha.2017.05.147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Revised: 05/19/2017] [Accepted: 05/31/2017] [Indexed: 11/16/2022] Open
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88
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García-Laorden MI, Lorente JA, Flores C, Slutsky AS, Villar J. Biomarkers for the acute respiratory distress syndrome: how to make the diagnosis more precise. ANNALS OF TRANSLATIONAL MEDICINE 2017; 5:283. [PMID: 28828358 DOI: 10.21037/atm.2017.06.49] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The acute respiratory distress syndrome (ARDS) is an acute inflammatory process of the lung caused by a direct or indirect insult to the alveolar-capillary membrane. Currently, ARDS is diagnosed based on a combination of clinical and physiological variables. The lack of a specific biomarker for ARDS is arguably one of the most important obstacles to progress in developing novel treatments for ARDS. In this article, we will review the current understanding of some appealing biomarkers that have been measured in human blood, bronchoalveolar lavage fluid (BALF) or exhaled gas that could be used for identifying patients with ARDS, for enrolling ARDS patients into clinical trials, or for better monitoring of patient's management. After a literature search, we identified several biomarkers that are associated with the highest sensitivity and specificity for the diagnosis or outcome prediction of ARDS: receptor for advanced glycation end-products (RAGE), angiopoietin-2 (Ang-2), surfactant protein D (SP-D), inteleukin-8, Fas and Fas ligand, procollagen peptide (PCP) I and III, octane, acetaldehyde, and 3-methylheptane. In general, these are cell-specific for epithelial or endothelial injury or involved in the inflammatory or infectious response. No biomarker or biomarkers have yet been confirmed for the diagnosis of ARDS or prediction of its prognosis. However, it is anticipated that in the near future, using biomarkers for defining ARDS, or for determining those patients who are more likely to benefit from a given therapy will have a major effect on clinical practice.
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Affiliation(s)
- M Isabel García-Laorden
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.,Multidisciplinary Organ Dysfunction Evaluation Research Network, Research Unit, Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain
| | - José A Lorente
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.,Intensive Care Unit, Hospital Universitario de Getafe, Madrid, Spain.,Department of Medicine, Universidad Europea, Madrid, Spain
| | - Carlos Flores
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.,Research Unit, Hospital NS de Candelaria, Santa Cruz de Tenerife, Spain
| | - Arthur S Slutsky
- Keenan Research Center for Biomedical Science at the Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Ontario, Canada.,Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Jesús Villar
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.,Multidisciplinary Organ Dysfunction Evaluation Research Network, Research Unit, Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain.,Keenan Research Center for Biomedical Science at the Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Ontario, Canada
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89
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Loi M, Wang J, Ong C, Lee JH. Nutritional support of critically ill adults and children with acute respiratory distress syndrome: A clinical review. Clin Nutr ESPEN 2017. [DOI: 10.1016/j.clnesp.2017.02.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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90
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Kosutova P, Mikolka P, Balentova S, Adamkov M, Kolomaznik M, Calkovska A, Mokra D. Intravenous dexamethasone attenuated inflammation and influenced apoptosis of lung cells in an experimental model of acute lung injury. Physiol Res 2017; 65:S663-S672. [PMID: 28006948 DOI: 10.33549/physiolres.933531] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Acute lung injury (ALI) is characterized by diffuse alveolar damage, inflammation, and transmigration and activation of inflammatory cells. This study evaluated if intravenous dexamethasone can influence lung inflammation and apoptosis in lavage-induced ALI. ALI was induced in rabbits by repetitive saline lung lavage (30 ml/kg, 9+/-3-times). Animals were divided into 3 groups: ALI without therapy (ALI), ALI treated with dexamethasone i.v. (0.5 mg/kg, Dexamed; ALI+DEX), and healthy non-ventilated controls (Control). After following 5 h of ventilation, ALI animals were overdosed by anesthetics. Total and differential counts of cells in bronchoalveolar lavage fluid (BAL) were estimated. Lung edema was expressed as wet/dry weight ratio. Concentrations of IL-1beta, IL-8, esRAGE, S1PR3 in the lung were analyzed by ELISA methods. In right lung, apoptotic cells were evaluated by TUNEL assay and caspase-3 immunohistochemically. Dexamethasone showed a trend to improve lung functions and histopathological changes, reduced leak of neutrophils (P<0.001) into the lung, decreased concentrations of pro-inflammatory IL-1beta (P<0.05) and marker of lung injury esRAGE (P<0.05), lung edema formation (P<0.05), and lung apoptotic index (P<0.01), but increased immunoreactivity of caspase-3 in the lung (P<0.001). Considering the action of dexamethasone on respiratory parameters and lung injury, the results indicate potential of this therapy in ALI.
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Affiliation(s)
- P Kosutova
- Biomedical Center Martin and Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovak Republic.
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91
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Li Y, Xiao J, Tan Y, Wang J, Zhang Y, Deng X, Luo Y. Inhibition of PKR ameliorates lipopolysaccharide-induced acute lung injury by suppressing NF-κB pathway in mice. Immunopharmacol Immunotoxicol 2017; 39:165-172. [PMID: 28511573 DOI: 10.1080/08923973.2017.1303839] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Acute lung injury (ALI) is characterized by dramatic lung inflammation and alveolar epithelial cell death. Although protein kinase R (PKR) (double-stranded RNA-activated serine/threonine kinase) has been implicated in inflammatory response to bacterial cell wall components, whether it plays roles in lipopolysaccharide (LPS)-induced ALI remains unclear. This study was aimed to reveal whether and how PKR was involved in LPS-induced ALI pathology and the potential effects of its specific inhibitor, C16 (C13H8N4OS). During the experiment, mice received C16 (100 or 500 ug/kg) intraperitoneally 1 h before intratracheal LPS instillation. Then, whole lung lavage was collected for analysis of total protein levels and proinflammatory cytokines, including tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and IL-6. The lungs were tested for Western blot, transferase-mediated dUTP nick-end labeling (TUNEL) stain and immunohistochemistry. Results showed that PKR phosphorylation increased significantly after LPS instillation. Furthermore, PKR specific inhibition attenuated LPS-induced lung injury (hematoxylin and eosin stain), reduced lung protein permeability (total protein levels in whole lung lavage) and suppressed proinflammatory cytokines (TNF-α, IL-1β and IL-6) and lung apoptosis (TUNEL stain and caspase3 activation). Moreover, mechanism-study showed that C16 significantly suppressed I kappa B kinase (IKK)/I kappa B alpha (IκBα)/NF-κB signaling pathway after LPS challenge. These findings suggested that PKR inhibition ameliorated LPS-induced lung inflammation and apoptosis in mice by suppressing NF-κB signaling pathway.
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Affiliation(s)
- Yinjiao Li
- a Department of Anesthesiology , Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Jinglei Xiao
- a Department of Anesthesiology , Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Yongchang Tan
- a Department of Anesthesiology , Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Jun Wang
- b Department of Anesthesiology and Intensive Care , Changhai Hospital, Second Military Medical University , Shanghai , China
| | - Yan Zhang
- b Department of Anesthesiology and Intensive Care , Changhai Hospital, Second Military Medical University , Shanghai , China
| | - Xiaoming Deng
- b Department of Anesthesiology and Intensive Care , Changhai Hospital, Second Military Medical University , Shanghai , China
| | - Yan Luo
- a Department of Anesthesiology , Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai , China
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92
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Lai JB, Qiu CF, Chen CX, Chen MY, Chen J, Guan XD, Ouyang B. Inhibition of c-Jun N-terminal Kinase Signaling Pathway Alleviates Lipopolysaccharide-induced Acute Respiratory Distress Syndrome in Rats. Chin Med J (Engl) 2017; 129:1719-24. [PMID: 27411461 PMCID: PMC4960963 DOI: 10.4103/0366-6999.185867] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background: An acute respiratory distress syndrome (ARDS) is still one of the major challenges in critically ill patients. This study aimed to investigate the effect of inhibiting c-Jun N-terminal kinase (JNK) on ARDS in a lipopolysaccharide (LPS)-induced ARDS rat model. Methods: Thirty-six rats were randomized into three groups: control, LPS, and LPS + JNK inhibitor. Rats were sacrificed 8 h after LPS treatment. The lung edema was observed by measuring the wet-to-dry weight (W/D) ratio of the lung. The severity of pulmonary inflammation was observed by measuring myeloperoxidase (MPO) activity of lung tissue. Moreover, the neutrophils in bronchoalveolar lavage fluid (BALF) were counted to observe the airway inflammation. In addition, lung collagen accumulation was quantified by Sircol Collagen Assay. At the same time, the pulmonary histologic examination was performed, and lung injury score was achieved in all three groups. Results: MPO activity in lung tissue was found increased in rats treated with LPS comparing with that in control (1.26 ± 0.15 U in LPS vs. 0.77 ± 0.27 U in control, P < 0.05). Inhibiting JNK attenuated LPS-induced MPO activity upregulation (0.52 ± 0.12 U in LPS + JNK inhibitor vs. 1.26 ± 0.15 U in LPS, P < 0.05). Neutrophils in BALF were also found to be increased with LPS treatment, and inhibiting JNK attenuated LPS-induced neutrophils increase in BALF (255.0 ± 164.4 in LPS vs. 53 (44.5-103) in control vs. 127.0 ± 44.3 in LPS + JNK inhibitor, P < 0.05). At the same time, the lung injury score showed a reduction in LPS + JNK inhibitor group comparing with that in LPS group (13.42 ± 4.82 vs. 7.00 ± 1.83, P = 0.001). However, the lung W/D ratio and the collagen in BALF did not show any differences between LPS and LPS + JNK inhibitor group. Conclusions: Inhibiting JNK alleviated LPS-induced acute lung inflammation and had no effects on pulmonary edema and fibrosis. JNK inhibitor might be a potential therapeutic medication in ARDS, in the context of reducing lung inflammatory.
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Affiliation(s)
- Jian-Bo Lai
- Department of Critical Care Medicine, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
| | - Chun-Fang Qiu
- Department of Critical Care Medicine, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
| | - Chuan-Xi Chen
- Department of Critical Care Medicine, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
| | - Min-Ying Chen
- Department of Critical Care Medicine, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
| | - Juan Chen
- Department of Critical Care Medicine, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
| | - Xiang-Dong Guan
- Department of Critical Care Medicine, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
| | - Bin Ouyang
- Department of Critical Care Medicine, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
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93
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Cong X, Hubmayr RD, Li C, Zhao X. Plasma membrane wounding and repair in pulmonary diseases. Am J Physiol Lung Cell Mol Physiol 2017; 312:L371-L391. [PMID: 28062486 PMCID: PMC5374305 DOI: 10.1152/ajplung.00486.2016] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 01/05/2017] [Accepted: 01/05/2017] [Indexed: 12/12/2022] Open
Abstract
Various pathophysiological conditions such as surfactant dysfunction, mechanical ventilation, inflammation, pathogen products, environmental exposures, and gastric acid aspiration stress lung cells, and the compromise of plasma membranes occurs as a result. The mechanisms necessary for cells to repair plasma membrane defects have been extensively investigated in the last two decades, and some of these key repair mechanisms are also shown to occur following lung cell injury. Because it was theorized that lung wounding and repair are involved in the pathogenesis of acute respiratory distress syndrome (ARDS) and idiopathic pulmonary fibrosis (IPF), in this review, we summarized the experimental evidence of lung cell injury in these two devastating syndromes and discuss relevant genetic, physical, and biological injury mechanisms, as well as mechanisms used by lung cells for cell survival and membrane repair. Finally, we discuss relevant signaling pathways that may be activated by chronic or repeated lung cell injury as an extension of our cell injury and repair focus in this review. We hope that a holistic view of injurious stimuli relevant for ARDS and IPF could lead to updated experimental models. In addition, parallel discussion of membrane repair mechanisms in lung cells and injury-activated signaling pathways would encourage research to bridge gaps in current knowledge. Indeed, deep understanding of lung cell wounding and repair, and discovery of relevant repair moieties for lung cells, should inspire the development of new therapies that are likely preventive and broadly effective for targeting injurious pulmonary diseases.
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Affiliation(s)
- Xiaofei Cong
- Department of Physiological Sciences, Eastern Virginia Medical School, Norfolk, Virginia
| | - Rolf D Hubmayr
- Emerius, Thoracic Diseases Research Unit, Mayo Clinic, Rochester, Minnesota; and
| | - Changgong Li
- Department of Pediatrics, University of Southern California, Los Angeles, California
| | - Xiaoli Zhao
- Department of Physiological Sciences, Eastern Virginia Medical School, Norfolk, Virginia;
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94
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Galani V, Papadatos SS, Alexiou G, Galani A, Kyritsis AP. In Vitro and In Vivo Preclinical Effects of Type I IFNs on Gliomas. J Interferon Cytokine Res 2017; 37:139-146. [PMID: 28387596 DOI: 10.1089/jir.2016.0094] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The interferons (IFNs) are a family of cytokines with diverse cellular actions such as control of cell proliferation and regulation of immune responses; therefore, they have been extensively studied as antitumor agents for a variety of malignancies, including gliomas. Type I IFNs exert their antitumor effects either directly, by targeting the tumor cells or the tumor stem cells, or indirectly, by regulating the anticancer activities of the immune system. More specifically, IFN-beta and IFN-alpha exhibit antiproliferative effects by p53 induction, CD8+ T-lymphocyte and macrophage activation, chemokine secretion, and miR-21 downregulation. In vitro and in vivo studies provide evidence that immunotherapy could have a role in glioma treatment, especially when first-line therapeutic interventions fail to produce durable responses. These effects are more obvious when combining IFN-beta with classical antitumor therapies such as temozolamide, an oral chemotherapeutic, for both newly diagnosed and recurrent gliomas. However, further clinical studies are needed to determine whether IFNs will have a definite place in the management of gliomas.
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Affiliation(s)
- Vasiliki Galani
- 1 Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of Ioannina , Ioannina, Greece
| | - Stamatis S Papadatos
- 2 3rd Department of Internal Medicine, Athens School of Medicine, National and Kapodistrian University of Athens , Sotiria General Hospital, Athens, Greece
| | - George Alexiou
- 3 Neurosurgical Institute, University of Ioannina , Ioannina, Greece
| | - Angeliki Galani
- 4 Department of Environmental and Natural Resources Management, University of Patras , Patra, Greece
| | - Athanasios P Kyritsis
- 3 Neurosurgical Institute, University of Ioannina , Ioannina, Greece .,5 Department of Neurology, Faculty of Medicine, University of Ioannina , Ioannina, Greece
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95
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Wang WC, Xia YM, Yang B, Su XN, Chen JK, Li W, Jiang T. Protective Effects of Tyrosol against LPS-Induced Acute Lung Injury via Inhibiting NF-κB and AP-1 Activation and Activating the HO-1/Nrf2 Pathways. Biol Pharm Bull 2017; 40:583-593. [PMID: 28190857 DOI: 10.1248/bpb.b16-00756] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Tyrosol (Tyr) is a natural antioxidant that displays anti-oxidant and anti-inflammatory properties. The present study aimed to investigate the effect and mechanism of Tyr on lipopolysaccharide (LPS)-induced acute lung injury (ALI). In a mouse model, we found that pretreatment with Tyr significantly improved survival rate, attenuated lung permeability, ameliorated histopathological alterations, reduced expression of the inflammatory mediators and improved expression of the antioxidant enzyme. Further study revealed that Tyr markedly inhibited nuclear factor-κB (NF-κB) and activator protein-1 (AP-1) activation at both in vivo and in vitro levels. To investigate the underlying mechanism, we examined the impact of Tyr on the heme oxygenase (HO)-1/nuclear factor erythroid-2 related factor 2 (Nrf2) pathway in vivo and in vitro. The results showed that Tyr significantly improved the expression of HO-1 and the activation of Nrf2. This study offers novel evidence to support the efficacy of Tyr against ALI, which helps to clarify the underlying causes of the therapeutic effects behind Tyr.
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Affiliation(s)
- Wen-Chen Wang
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University
| | - Yan-Min Xia
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University
| | - Bo Yang
- Department of Thoracic Surgery, Tianjin First Center Hospital
| | - Xiang-Ni Su
- Department of Nursing, Fourth Military Medical University
| | - Jia-Kuan Chen
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University
| | - Wei Li
- Department of Histology and Embryology, Fourth Military Medical University
| | - Tao Jiang
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University
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96
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Zou C, Li J, Xiong S, Chen Y, Wu Q, Li X, Weathington NM, Han S, Snavely C, Chen BB, Mallampalli RK. Mortality factor 4 like 1 protein mediates epithelial cell death in a mouse model of pneumonia. Sci Transl Med 2016; 7:311ra171. [PMID: 26511508 DOI: 10.1126/scitranslmed.aac7793] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Unchecked epithelial cell death is fundamental to the pathogenesis of pneumonia. The recognition of unique signaling pathways that preserve epithelial cell viability may present new opportunities for interventional strategies. We describe that mortality factor 4 like 1 (Morf4l1), a protein involved in chromatin remodeling, is constitutively expressed at low levels in the lung because of its continuous degradation mediated by an orphan ubiquitin E3 ligase subunit, Fbxl18. Expression of Morf4l1 increases in humans with pneumonia and is up-regulated in lung epithelia after exposure to Pseudomonas aeruginosa or lipopolysaccharide. In a mouse model of pneumonia induced by P. aeruginosa, Morf4l1 is stabilized by acetylation that protects it from Fbxl18-mediated degradation. After P. aeruginosa infection of mice, overexpression of Morf4l1 resulted in lung epithelial cell death, whereas its depletion restored cell viability. Using in silico modeling and drug-target interaction studies, we identified that the U.S. Food and Drug Administration-approved thrombin inhibitor argatroban is a Morf4l1 antagonist. Argatroban inhibited Morf4l1-dependent histone acetylation, reduced its cytotoxicity, and improved survival of mice with experimental lung injury at doses that had no anticoagulant activity. These studies uncover a previously unrecognized biological mechanism whereby pathogens subvert cell viability by extending the life span of a cytotoxic host protein. Morf4l1 may be a potential molecular target for non-antibiotic pharmacotherapy during severe pulmonary infection.
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Affiliation(s)
- Chunbin Zou
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA.
| | - Jin Li
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Sheng Xiong
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Yan Chen
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Qin Wu
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Xiuying Li
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Nathaniel M Weathington
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA. Medical Specialty Service Line, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA
| | - SeungHye Han
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Courtney Snavely
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Bill B Chen
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Rama K Mallampalli
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA. Medical Specialty Service Line, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA. Department of Cell Biology and Physiology, University of Pittsburgh, Pittsburgh, PA 15213, USA.
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97
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Pan L, Yao DC, Yu YZ, Li SJ, Chen BJ, Hu GH, Xi C, Wang ZH, Wang HY, Li JH, Tu YS. Necrostatin-1 protects against oleic acid-induced acute respiratory distress syndrome in rats. Biochem Biophys Res Commun 2016; 478:1602-8. [PMID: 27586277 DOI: 10.1016/j.bbrc.2016.08.163] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 08/29/2016] [Indexed: 01/03/2023]
Abstract
Necroptosis is a recently discovered necrotic cell death which is regulated by receptor interacting protein kinase 1 (RIPK1) and RIPK3 under the stimulus of death signal and can be inhibited by necrostatin-1 (Nec-1) specifically. Therefore, the aim was to investigate the role of necroptosis in a rat model of acute respiratory distress syndrome (ARDS) induced by oleic acid (OA) and assess the effect of Nec-1 on lung injury in ARDS. Our results found that RIPK1, RIPK3 and mixed lineage kinase domain-like protein (MLKL) were abundantly expressed in rat lung tissues of OA-induced ARDS. Nec-1 pretreatment improved pulmonary function and attenuated lung edema dramatically in OA-induced ARDS rats. Furthermore, Nec-1 reduced RIPK1-RIPK3 interaction and down-regulated RIPK1-RIPK3-MLKL signal pathway, and inhibited inflammatory response by reducing neutrophil infiltration and protein leakage into lung tissue in OA-induced ARDS. Collectively, our study proves the intervention of necroptosis in OA-induced ARDS. Moreover, our findings imply that Nec-1 plays an important role in the treatment of ARDS via inhibiting necroptosis and inflammation.
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Affiliation(s)
- Long Pan
- Department of Physiology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 511436, China; The Third Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Dun-Chen Yao
- Department of Physiology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 511436, China; The Third Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Yu-Zhong Yu
- Department of Physiology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 511436, China; The Third Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Sheng-Jie Li
- Department of Physiology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 511436, China; The First Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Bing-Jun Chen
- Department of Physiology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 511436, China; The Third Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Gui-He Hu
- Department of Physiology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 511436, China; The Third Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Chang Xi
- Department of Physiology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 511436, China; The Third Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Zi-Hui Wang
- Department of Physiology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 511436, China; The Second Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Hong-Yan Wang
- Department of Pathology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Jian-Hua Li
- Department of Physiology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Yong-Sheng Tu
- Department of Physiology, School of Basic Sciences, Guangzhou Medical University, Guangzhou 511436, China.
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98
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Galani V, Kastamoulas M, Varouktsi A, Lampri E, Mitselou A, Arvanitis DL. IFNs-signaling effects on lung cancer: an up-to-date pathways-specific review. Clin Exp Med 2016; 17:281-289. [PMID: 27416926 DOI: 10.1007/s10238-016-0432-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 07/07/2016] [Indexed: 01/01/2023]
Abstract
IFNs have found important applications in clinical medicine, including the treatment of lung malignancies. The biological effect of the IFN-receptor signaling is regulated essentially by three factors: the expression profile of the IFN itself, the profile of the receptor, and the expression of target genes. IFNs initiate their signaling by binding to specific receptors. The activated IFNs can directly induce gene transcription and/or multiple downstream signaling that both induce diverse cellular responses including the cell cycle arrest and the apoptosis in tumor cells. We provided evidence that IFN-γ enhances the pro cell death effects of Fas/CD95 in human neoplastic alveolar epithelial cell line, A549. We also found that p27 protein plays a pivotal role in the inducing cell death of IFNγ-CH-11-treated A549 cells, since it is involved in the Ras/Raf signaling pathway. This article discusses recent insights into these possible additional functions of IFNs in lung cancer treatment.
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Affiliation(s)
- Vasiliki Galani
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of Ioannina, 45110, Ioannina, Greece.
| | - Michalis Kastamoulas
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of Ioannina, 45110, Ioannina, Greece
| | | | - Evangeli Lampri
- Department of Cancer Biobank Center, University of Ioannina, Ioannina, Greece
| | - Antigoni Mitselou
- Department of Forensic Pathology, Faculty of Medicine, University of Ioannina, Ioannina, Greece
| | - Dimitrios L Arvanitis
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of Thessaly, Larissa, Greece
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99
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Receptor Interacting Protein 3-Mediated Necroptosis Promotes Lipopolysaccharide-Induced Inflammation and Acute Respiratory Distress Syndrome in Mice. PLoS One 2016; 11:e0155723. [PMID: 27195494 PMCID: PMC4873150 DOI: 10.1371/journal.pone.0155723] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 05/03/2016] [Indexed: 01/11/2023] Open
Abstract
Necrosis amplifies inflammation and plays important roles in acute respiratory distress syndrome (ARDS). Necroptosis is a newly identified programmed necrosis that is mediated by receptor interacting protein 3 (RIP3). However, the potential involvement and impact of necroptosis in lipopolysaccharide (LPS)-induced ARDS remains unknown. We therefore explored the role and mechanism of RIP3-mediated necroptosis in LPS-induced ARDS. Mice were instilled with increasing doses of LPS intratracheally to induce different degrees of ARDS. Lung tissues were harvested for histological and TUNEL staining and western blot for RIP3, p-RIP3, X-linked inhibitor of apoptosis protein (XIAP), mixed lineage kinase domain-like protein (MLKL), total and cleaved caspases-3/8. Then, wild-type and RIP3 knock-out mice were induced ARDS with 30 mg/kg LPS. Pulmonary cellular necrosis was labeled by the propidium Iodide (PI) staining. Levels of TNF-a, Interleukin (IL)-1β, IL-6, IL-1α, IL-10 and HMGB1, tissue myeloperoxidase (MPO) activity, neutrophil counts and total protein concentration were measured. Results showed that in high dose LPS (30mg/kg and 40mg/kg) -induced severe ARDS, RIP3 protein was increased significantly, accompanied by increases of p-RIP3 and MLKL, while in low dose LPS (10mg/kg and 20mg/kg) -induced mild ARDS, apoptosis was remarkably increased. In LPS-induced severe ARDS, RIP3 knock-out alleviated the hypothermia symptom, increased survival rate and ameliorated the lung tissue injury RIP3 depletion also attenuated LPS-induced increase in IL-1α/β, IL-6 and HMGB1 release, decreased tissue MPO activity, and reduced neutrophil influx and total protein concentration in BALF in severe ARDS. Further, RIP3 depletion reduced the necrotic cells in the lung and decreased the expression of MLKL, but had no impact on cleaved caspase-3 in LPS-induced ARDS. It is concluded that RIP3-mediated necroptosis is a major mechanism of enhanced inflammation and lung tissue injury in high dose LPS- induced severe ARDS in mice.
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100
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Levitt JE, Rogers AJ. Proteomic study of acute respiratory distress syndrome: current knowledge and implications for drug development. Expert Rev Proteomics 2016; 13:457-69. [PMID: 27031735 DOI: 10.1586/14789450.2016.1172481] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The acute respiratory distress syndrome (ARDS) is a common cause of acute respiratory failure, and is associated with substantial mortality and morbidity. Dozens of clinical trials targeting ARDS have failed, with no drug specifically targeting lung injury in widespread clinical use. Thus, the need for drug development in ARDS is great. Targeted proteomic studies in ARDS have identified many key pathways in the disease, including inflammation, epithelial injury, endothelial injury or activation, and disordered coagulation and repair. Recent studies reveal the potential for proteomic changes to identify novel subphenotypes of ARDS patients who may be most likely to respond to therapy and could thus be targeted for enrollment in clinical trials. Nontargeted studies of proteomics in ARDS are just beginning and have the potential to identify novel drug targets and key pathways in the disease. Proteomics will play an important role in phenotyping of patients and developing novel therapies for ARDS in the future.
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Affiliation(s)
- Joseph E Levitt
- a Division of Pulmonary and Critical Care Medicine , Stanford University , Stanford , CA , USA
| | - Angela J Rogers
- a Division of Pulmonary and Critical Care Medicine , Stanford University , Stanford , CA , USA
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