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Wang J, Zhang H, Su C, Chen J, Zhu B, Zhang H, Xiao H, Zhang J. Dexamethasone ameliorates H₂S-induced acute lung injury by alleviating matrix metalloproteinase-2 and -9 expression. PLoS One 2014; 9:e94701. [PMID: 24722316 PMCID: PMC3983216 DOI: 10.1371/journal.pone.0094701] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Accepted: 03/17/2014] [Indexed: 01/23/2023] Open
Abstract
Acute lung injury (ALI) is one of the fatal outcomes after exposure to high levels of hydrogen sulfide (H2S), and the matrix metalloproteinases (MMPs) especially MMP-2 and MMP-9 are believed to be involved in the development of ALI by degrading the extracellular matrix (ECM) of blood-air barrier. However, the roles of MMP-2 and MMP-9 in H2S-induced ALI and the mechanisms of dexamethasone (DXM) in treating ALI in clinical practice are still largely unknown. The present work was aimed to investigate the roles of MMP-2 and MMP-9 in H2S-induced ALI and the protective effects of DXM. In our study, SD rats were exposed to H2S to establish the ALI model and in parallel, A549 cells were incubated with NaHS (a H2S donor) to establish cell model. The lung HE staining, immunohistochemisty, electron microscope assay and wet/dry ratio were used to identify the ALI induced by H2S, then the MMP-2 and MMP-9 expression in both rats and A549 cells were detected. Our results revealed that MMP-2 and MMP-9 were obviously increased in both mRNA and protein level after H2S exposure, and they could be inhibited by MMP inhibitor doxycycline (DOX) in rat model. Moreover, DXM significantly ameliorated the symptoms of H2S-induced ALI including alveolar edema, infiltration of inflammatory cells and the protein leakage in BAFL via up-regulating glucocorticoid receptor(GR) to mediate the suppression of MMP-2 and MMP-9. Furthermore, the protective effects of DXM in vivo and vitro study could be partially blocked by co-treated with GR antagonist mifepristone (MIF). Our results, taken together, demonstrated that MMP-2 and MMP-9 were involved in the development of H2S-induced ALI and DXM exerted protective effects by alleviating the expression of MMP-2 and MMP-9. Therefore, MMP-2 and MMP-9 might represent novel pharmacological targets for the treatment of H2S and other hazard gases induced ALI.
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Affiliation(s)
- Jun Wang
- Key Lab of Modern Toxicology, Ministry of Education, Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Huazhong Zhang
- Department of Emergency Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Chenglei Su
- Department of Emergency Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Junjie Chen
- Department of Emergency Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Baoli Zhu
- Department of Occupational Disease Prophylactico-Therapetic Institution, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing, Jiangsu, China
| | - Hengdong Zhang
- Department of Occupational Disease Prophylactico-Therapetic Institution, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing, Jiangsu, China
| | - Hang Xiao
- Key Lab of Modern Toxicology, Ministry of Education, Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
- * E-mail: (HX); (JZ)
| | - Jinsong Zhang
- Department of Emergency Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- * E-mail: (HX); (JZ)
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Chen XY, Wang SM, Li N, Hu Y, Zhang Y, Xu JF, Li X, Ren J, Su B, Yuan WZ, Teng XR, Zhang RX, Jiang DH, Mulet X, Li HP. Creation of lung-targeted dexamethasone immunoliposome and its therapeutic effect on bleomycin-induced lung injury in rats. PLoS One 2013; 8:e58275. [PMID: 23516459 PMCID: PMC3597622 DOI: 10.1371/journal.pone.0058275] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 02/01/2013] [Indexed: 12/28/2022] Open
Abstract
OBJECTIVE Acute lung injury (ALI), is a major cause of morbidity and mortality, which is routinely treated with the administration of systemic glucocorticoids. The current study investigated the distribution and therapeutic effect of a dexamethasone(DXM)-loaded immunoliposome (NLP) functionalized with pulmonary surfactant protein A (SP-A) antibody (SPA-DXM-NLP) in an animal model. METHODS DXM-NLP was prepared using film dispersion combined with extrusion techniques. SP-A antibody was used as the lung targeting agent. Tissue distribution of SPA-DXM-NLP was investigated in liver, spleen, kidney and lung tissue. The efficacy of SPA-DXM-NLP against lung injury was assessed in a rat model of bleomycin-induced acute lung injury. RESULTS The SPA-DXM-NLP complex was successfully synthesized and the particles were stable at 4°C. Pulmonary dexamethasone levels were 40 times higher with SPA-DXM-NLP than conventional dexamethasone injection. Administration of SPA-DXM-NLP significantly attenuated lung injury and inflammation, decreased incidence of infection, and increased survival in animal models. CONCLUSIONS The administration of SPA-DXM-NLP to animal models resulted in increased levels of DXM in the lungs, indicating active targeting. The efficacy against ALI of the immunoliposomes was shown to be superior to conventional dexamethasone administration. These results demonstrate the potential of actively targeted glucocorticoid therapy in the treatment of lung disease in clinical practice.
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Affiliation(s)
- Xue-Yuan Chen
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shan-Mei Wang
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Nan Li
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yang Hu
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yuan Zhang
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jin-Fu Xu
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xia Li
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jie Ren
- Institute of Nano and Bio-polymeric materials, Tongji University, Shanghai, China
| | - Bo Su
- Centrol Laboratory of Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Wei-Zhong Yuan
- Institute of Nano and Bio-polymeric materials, Tongji University, Shanghai, China
| | - Xin-Rong Teng
- Institute of Nano and Bio-polymeric materials, Tongji University, Shanghai, China
| | - Rong-Xuan Zhang
- Department of Pathology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Dian-hua Jiang
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Xavier Mulet
- CSIRO Materials Science and Engineering, Clayton, Victoria, Australia
| | - Hui-Ping Li
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
- * E-mail:
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Takano Y, Mitsuhashi H, Ueno K. 1α,25-Dihydroxyvitamin D₃ inhibits neutrophil recruitment in hamster model of acute lung injury. Steroids 2011; 76:1305-9. [PMID: 21745487 DOI: 10.1016/j.steroids.2011.06.009] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2011] [Revised: 06/23/2011] [Accepted: 06/24/2011] [Indexed: 11/22/2022]
Abstract
The chemokine interleukin-8 (IL-8) is involved in the pathogenesis of acute lung injury (ALI). Although several studies have reported that 1α,25-dihydroxyvitamin D(3) (1α,25(OH)(2)D(3)) suppresses IL-8 production in vitro and in vivo, 1α,25(OH)(2)D(3) has not been demonstrated to be effective in an animal model of ALI. Here, we determined its effects of 1α,25(OH)(2)D(3) in a hamster model where ALI was induced by lipopolysaccharide (LPS) inhalation. 1α,25(OH)(2)D(3) inhibited neutrophil recruitment in the lung by approximately 40% without increasing plasma calcium concentration, while it did not inhibit monocyte recruitment. Our findings show that vitamin D(3) analogues may be suitable as novel anti-inflammatory agents for ALI.
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Affiliation(s)
- Yasuhiro Takano
- Pharmacological Research Department, Pharmaceuticals Development Research Laboratories, Teijin Institute for Bio-Medical Research, Hino, Tokyo 191-8512, Japan.
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Kitsiouli E, Nakos G, Lekka ME. Phospholipase A2 subclasses in acute respiratory distress syndrome. Biochim Biophys Acta Mol Basis Dis 2009; 1792:941-53. [PMID: 19577642 DOI: 10.1016/j.bbadis.2009.06.007] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2009] [Revised: 06/25/2009] [Accepted: 06/25/2009] [Indexed: 01/12/2023]
Abstract
Phospholipases A2 (PLA2) catalyse the cleavage of fatty acids esterified at the sn-2 position of glycerophospholipids. In acute lung injury-acute respiratory distress syndrome (ALI-ARDS) several distinct isoenzymes appear in lung cells and fluid. Some are capable to trigger molecular events leading to enhanced inflammation and lung damage and others have a role in lung surfactant recycling preserving lung function: Secreted forms (groups sPLA2-IIA, -V, -X) can directly hydrolyze surfactant phospholipids. Cytosolic PLA2 (cPLA2-IVA) requiring Ca2+ has a preference for arachidonate, the precursor of eicosanoids which participate in the inflammatory response in the lung. Ca(2+)-independent intracellular PLA2s (iPLA2) take part in surfactant phospholipids turnover within alveolar cells. Acidic Ca(2+)-independent PLA2 (aiPLA2), of lysosomal origin, has additionally antioxidant properties, (peroxiredoxin VI activity), and participates in the formation of dipalmitoyl-phosphatidylcholine in lung surfactant. PAF-AH degrades PAF, a potent mediator of inflammation, and oxidatively fragmented phospholipids but also leads to toxic metabolites. Therefore, the regulation of PLA2 isoforms could be a valuable approach for ARDS treatment.
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Affiliation(s)
- Eirini Kitsiouli
- Department of Biological Applications and Technologies, School of Sciences and Technologies, University of Ioannina, Greece
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Hoehn T, Gratopp A, Raehse K, Koehne P. Effects of hyperoxia and nitric oxide on endogenous nitric oxide production in polymorphonuclear leukocytes. Neonatology 2008; 94:132-7. [PMID: 18332642 DOI: 10.1159/000119723] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2007] [Accepted: 11/21/2007] [Indexed: 11/19/2022]
Abstract
BACKGROUND Exposure to hyperoxia and nitric oxide (NO) occur frequently during the treatment of neonatal hypoxic pulmonary failure. OBJECTIVE The aim of the study was to quantify the endogenous synthesis of NO in neonatal polymorphonuclear neutrophils following exposure to hyperoxia and NO in vitro. METHODS Neonatal cord blood was exposed to room air, 25, 30 and 100% oxygen and 10 or 20 ppm NO added to the different oxygen concentrations for up to 30 min. 4,5-Diaminofluorescein diacetate (DAF-2 DA) is an intracellular dye used to measure real-time changes in NO levels in vivo. The molecular structure of DAF-2 DA changes upon contact with NO to its oxidized and fluorescent form diaminofluorescein-triazol (DAF-2T) and after being hydrolyzed by intracellular esterases cannot leave the cell. DAF-2 DA signals following equilibration with room air were used as controls. RESULTS Exposure to 100% oxygen increased NO production significantly when compared to 20 ppm NO plus 100% oxygen (p = 0.031) and to 20 ppm NO alone (p = 0.006). 10 ppm NO produced a similar effect. Significant increases in NO production were also noticed following exposure to 25% oxygen. This increase was already present after 10 min of oxygen exposure. CONCLUSION These findings support the propagated avoidance of hyperoxia not only in preterm infants, but also in term neonates.
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Affiliation(s)
- Thomas Hoehn
- Neonatology and Pediatric Intensive Care Medicine, Department of General Pediatrics, Heinrich Heine University, Dusseldorf, Germany.
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