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Ji W, Zhang X, Sang C, Wang H, Zhou K, Zhang Y, Bo L. Punicalin attenuates LPS-induced acute lung injury by inhibiting inflammatory cytokine production and MAPK/NF-κB signaling in mice. Heliyon 2023; 9:e15434. [PMID: 37101633 PMCID: PMC10123264 DOI: 10.1016/j.heliyon.2023.e15434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/24/2023] [Accepted: 04/07/2023] [Indexed: 04/28/2023] Open
Abstract
Background Acute lung injury (ALI) remains a significant cause of morbidity and mortality in critically ill patients. Novel therapies interfering with the inflammatory response has been an area of focus for infectious disease treatment. Punicalin has shown strong anti-inflammatory and antioxidative properties; however, its effect in ALI has not been previously explored. Purpose To investigate the effects of punicalin in lipopolysaccharide (LPS)-induced ALI and explore the underlying mechanisms. Methods LPS (10 mg/kg) was administered intratracheally to create the ALI model in mice. Punicalin (10 mg/kg) was administered intraperitoneally shortly after LPS to investigate survival rate, lung tissue pathological injury, oxidative stress, levels of inflammatory cytokines in BALF and lung tissue, neutrophil extracellular trap (NET) formation and its effects on NF-κB and mitogen-activated protein kinase (MAPK) signaling pathways. In vitro studies were performed to evaluate the inflammatory cytokine release and NET formation in LPS-induced (1 μg/ml) and punicalin-treated mouse neutrophils derived from the bone marrow. Results In vivo, punicalin reduced mortality, lung injury score, lung wet-to-dry (W/D) weight ratio, protein concentrations in BALF and malondialdehyde (MDA) levels in lung tissues, and increased superoxide dismutase (SOD) levels in lung tissues of LPS-induced ALI mice. Increased secretion of TNF-α, IL-1β, and IL-6 in the BALF and the lungs of ALI mice was reversed by punicalin, whereas IL-10 was upregulated. Neutrophil recruitment and NET formation were also decreased by punicalin. Inhibition of NF-κB and MAPK signaling pathways was observed in punicalin-treated ALI mice. In vitro co-incubation with punicalin (50 μg/ml) inhibited the production of inflammatory cytokines and NET formation in LPS-treated neutrophils derived from mouse bone marrow. Conclusion Punicalin reduces inflammatory cytokine production, prevents neutrophil recruitment and NET formation, and inhibits the activation of NF-κB and MAPK signaling pathways in LPS-induced ALI.
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Affiliation(s)
- Wentao Ji
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Xiaoting Zhang
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Chao Sang
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Huixian Wang
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Keqian Zhou
- College of Basic Medicine, Naval Medical University, Shanghai 200433, China
| | - Yan Zhang
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai 200433, China
- Corresponding author.
| | - Lulong Bo
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai 200433, China
- Corresponding author.
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Burster T, Mustafa Z, Myrzakhmetova D, Zhanapiya A, Zimecki M. Hindrance of the Proteolytic Activity of Neutrophil-Derived Serine Proteases by Serine Protease Inhibitors as a Management of Cardiovascular Diseases and Chronic Inflammation. Front Chem 2021; 9:784003. [PMID: 34869231 PMCID: PMC8634265 DOI: 10.3389/fchem.2021.784003] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 10/20/2021] [Indexed: 12/23/2022] Open
Abstract
During inflammation neutrophils become activated and segregate neutrophil serine proteases (NSPs) to the surrounding environment in order to support a natural immune defense. However, an excess of proteolytic activity of NSPs can cause many complications, such as cardiovascular diseases and chronic inflammatory disorders, which will be elucidated on a biochemical and immunological level. The application of selective serine protease inhibitors is the logical consequence in the management of the indicated comorbidities and will be summarized in this briefing.
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Affiliation(s)
- Timo Burster
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Zhadyra Mustafa
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Dinara Myrzakhmetova
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Anuar Zhanapiya
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Michal Zimecki
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
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Ruan Y, Fan Y, Xie Y, Ma C, Mo B, Lai Y, Li G, Liu X, Kuang W. Modified Xiaoqinglong decoction alleviates lipopolysaccharide-induced acute lung injury in mice by regulating arachidonic acid metabolism and exerting anti-apoptotic and anti-inflammatory effects. Anat Rec (Hoboken) 2021; 305:1672-1681. [PMID: 34708578 DOI: 10.1002/ar.24822] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/18/2021] [Accepted: 09/18/2021] [Indexed: 11/10/2022]
Abstract
Effective therapeutics are not available for acute lung injury (ALI) and acute respiratory distress syndrome. Modified Xiaoqinglong decoction (M-XQL) is reported to effectively treat pneumonia, but the underlying mechanisms are unclear. In this study, the therapeutic effect and mechanism of M-XQL were examined using a lipopolysaccharide (LPS)-induced ALI mouse model. The effects of M-XQL on lung injury, inflammatory responses, and cell apoptosis were analyzed. Additionally, high-throughput sequencing was performed to evaluate the therapeutic mechanism of M-XQL. Pretreatment with M-XQL significantly and dose-dependently mitigated the pathological changes and upregulation of pulmonary, nitric oxide content and cell apoptosis and serum tumor necrosis factor-alpha contents in the LPS-induced ALI mouse model. RNA sequencing analysis revealed that the expression of several arachidonic acid metabolism-associated genes in the LPS + high-dose M-XQL group differed from that in the LPS group. In particular, the Cbr2, Cyp4f18, and Cyp2e1 levels were upregulated, whereas the Alox12, Ptges, and Ptges2 levels were downregulated in the LPS + high-dose M-XQL group. These results suggest that M-XQL exerts therapeutic effects in ALI mice by regulating arachidonic acid metabolism and exerting anti-apoptotic and anti-inflammatory effects. Thus, M-XQL is a potential agent for the clinical treatment of ALI.
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Affiliation(s)
- Yongdui Ruan
- The First Dongguan Affiliated Hospital of Guangdong Medical University, Dongguan, China
| | - Yaohua Fan
- Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Yanfeng Xie
- The First Dongguan Affiliated Hospital of Guangdong Medical University, Dongguan, China
| | - Chunling Ma
- The First Dongguan Affiliated Hospital of Guangdong Medical University, Dongguan, China
| | - Bingquan Mo
- The First Dongguan Affiliated Hospital of Guangdong Medical University, Dongguan, China
| | - Yanni Lai
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Geng Li
- Laboratory Animal Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiaohong Liu
- First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Weihong Kuang
- The First Dongguan Affiliated Hospital of Guangdong Medical University, Dongguan, China.,Guangdong Key Laboratory for Research and Development of Natural Drugs, Key Laboratory of Research and Development of New Medical Materials of Guangdong Medical University, School of Pharmacy, Guangdong Medical University, Dongguan, China
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4
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Cao T, Teng Z, Zheng L, Qian J, Ma H, Wang J, Qin W, Guo H. Activity-based ratiometric fluorescent small-molecule probe for endogenously monitoring neutrophil elastase in living cells. Anal Chim Acta 2020; 1127:295-302. [PMID: 32800135 DOI: 10.1016/j.aca.2020.06.070] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 06/06/2020] [Accepted: 06/28/2020] [Indexed: 11/15/2022]
Abstract
Neutrophil elastase (NE), a representative protease which is closely related to many diseases, acts an indispensable role in inflammatory diseases and clinical medicine. In this work, one activity-based non-peptide ratiometric fluorescent probe DCDF was designed with pentafluoropropionic anhydride as identification group. To our knowledge, this is the first probe capable of detecting NE in ratio. After the addition of the NE, the emission spectrum of DCDF has obvious bathochromic-shift phenomenon, and there is large Stokes shifts of ∼60 nm. Compared to only a few reported NE probes, DCDF is sensitive and selective and has very low detection limit (0-14 μg/mL, DL = 30.8 ng/mL). A possible response mechanism was proposed and verified by HPLC and HRMS spectra. What's more, DCDF is capable of endogenous recognition imaging in biological cells without interference from other enzymes under the ratio signal. A549 and HeLa cells were used for endogenous cell imaging experiments of NE and the feasibility of DCDF for the specific detection of NE in cells was proved. This experimental result makes probe DCDF a very promising tool for the clinical diagnosis and treatment of NE related diseases.
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Affiliation(s)
- Ting Cao
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Special Fund Project of Guiding Scientific and Technological Innovation Development of Gansu Province (2019ZX-04), Key Laboratory of Special Function Materials and Structure Design and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Zhidong Teng
- State Key Laboratory of Veterinary Etiological Biology and Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu Province, 730046, PR China
| | - Lei Zheng
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Special Fund Project of Guiding Scientific and Technological Innovation Development of Gansu Province (2019ZX-04), Key Laboratory of Special Function Materials and Structure Design and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Jing Qian
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Special Fund Project of Guiding Scientific and Technological Innovation Development of Gansu Province (2019ZX-04), Key Laboratory of Special Function Materials and Structure Design and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Hong Ma
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Special Fund Project of Guiding Scientific and Technological Innovation Development of Gansu Province (2019ZX-04), Key Laboratory of Special Function Materials and Structure Design and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Jiemin Wang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Special Fund Project of Guiding Scientific and Technological Innovation Development of Gansu Province (2019ZX-04), Key Laboratory of Special Function Materials and Structure Design and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Wenwu Qin
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Special Fund Project of Guiding Scientific and Technological Innovation Development of Gansu Province (2019ZX-04), Key Laboratory of Special Function Materials and Structure Design and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China.
| | - Huichen Guo
- State Key Laboratory of Veterinary Etiological Biology and Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu Province, 730046, PR China.
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5
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Yang HH, Duan JX, Liu SK, Xiong JB, Guan XX, Zhong WJ, Sun CC, Zhang CY, Luo XQ, Zhang YF, Chen P, Hammock BD, Hwang SH, Jiang JX, Zhou Y, Guan CX. A COX-2/sEH dual inhibitor PTUPB alleviates lipopolysaccharide-induced acute lung injury in mice by inhibiting NLRP3 inflammasome activation. Theranostics 2020; 10:4749-4761. [PMID: 32308747 PMCID: PMC7163435 DOI: 10.7150/thno.43108] [Citation(s) in RCA: 120] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 03/08/2020] [Indexed: 01/11/2023] Open
Abstract
Rationale: Dysregulation of arachidonic acid (ARA) metabolism results in inflammation; however, its role in acute lung injury (ALI) remains elusive. In this study, we addressed the role of dysregulated ARA metabolism in cytochromes P450 (CYPs) /cyclooxygenase-2 (COX-2) pathways in the pathogenesis of lipopolysaccharide (LPS)-induced ALI in mice. Methods: The metabolism of CYPs/COX-2-derived ARA in the lungs of LPS-induced ALI was investigated in C57BL/6 mice. The COX-2/sEH dual inhibitor PTUPB was used to establish the function of CYPs/COX-2 dysregulation in ALI. Primary murine macrophages were used to evaluate the underlying mechanism of PTUPB involved in the activation of NLRP3 inflammasome in vitro. Results: Dysregulation of CYPs/COX-2 metabolism of ARA occurred in the lungs and in primary macrophages under the LPS challenge. Decrease mRNA expression of Cyp2j9, Cyp2j6, and Cyp2j5 was observed, which metabolize ARA into epoxyeicosatrienoic acids (EETs). The expressions of COX-2 and soluble epoxide hydrolase (sEH), on the other hand, was significantly upregulated. Pre-treatment with the dual COX-2 and sEH inhibitor, PTUPB, attenuated the pathological injury of lung tissues and reduced the infiltration of inflammatory cells. Furthermore, PTUPB decreased the pro-inflammatory factors, oxidative stress, and activation of NACHT, LRR, and PYD domains-containing protein 3 (NLRP3) inflammasome in LPS-induced ALI mice. PTUPB pre-treatment remarkably reduced the activation of macrophages and NLRP3 inflammasome in vitro. Significantly, both preventive and therapeutic treatment with PTUPB improved the survival rate of mice receiving a lethal dose of LPS. Conclusion: The dysregulation of CYPs/COX-2 metabolized ARA contributes to the uncontrolled inflammatory response in ALI. The dual COX-2 and sEH inhibitor PTUPB exerts anti-inflammatory effects in treating ALI by inhibiting the NLRP3 inflammasome activation.
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Affiliation(s)
- Hui-Hui Yang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Jia-Xi Duan
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Hunan Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
| | - Shao-Kun Liu
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Hunan Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
| | - Jian-Bing Xiong
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Xin-Xin Guan
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Wen-Jing Zhong
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Chen-Chen Sun
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Chen-Yu Zhang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Xiao-Qin Luo
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Yan-Feng Zhang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Ping Chen
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Hunan Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
| | - Bruce D. Hammock
- Department of Entomology and Nematology and UC Davis Comprehensive Cancer Center, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Sung Hee Hwang
- Department of Entomology and Nematology and UC Davis Comprehensive Cancer Center, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Jian-Xin Jiang
- State Key Laboratory of Trauma, Burns, and Combined Injury, Army Medical University, Chongqing, 400038, China
| | - Yong Zhou
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Cha-Xiang Guan
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
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6
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Abstract
BACKGROUND Angiotensin II plays a vital role in the pathogenesis of acute respiratory distress syndrome (ARDS). However, its mechanism is not well defined. Angiotensin II upregulates the expression of soluble epoxide hydrolase (sEH; Ephx2). sEH is suggested as a potential pharmacologic target for ARDS. The present study investigates whether the sEH is involved in the angiotensin II-triggered pulmonary inflammation and edema using an angiotensin II-induced lung injury animal model. METHODS Lung injury was induced by angiotensin II intratracheally instillation in wild-type or Ephx2 deficient mice. RESULTS sEH activities were markedly increased in wild-type mice treated with angiotensin II. Angiotensin II markedly increased the levels of tumor necrosis factor-α and interleukin-1β in bronchoalveolar lavage fluid, worsened alveolar capillary protein leak and lung histological alterations, and elevated activity of activator protein-1 and nuclear factor-κB. However, these changes were significantly improved in Ephx2 deficient mice. Moreover, Losartan, an angiotensin II receptor 1 antagonist, abolished the sEH induction and improved mortality. CONCLUSIONS Angiotensin II-induced lung injury was improved in sEH gene deleted mice. The angiotensin II-triggered pulmonary inflammation is mediated, at least in part, through the sEH.
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Liu SY, Xiong H, Li RR, Yang WC, Yang GF. Activity-Based Near-Infrared Fluorogenic Probe for Enabling in Vitro and in Vivo Profiling of Neutrophil Elastase. Anal Chem 2019; 91:3877-3884. [DOI: 10.1021/acs.analchem.8b04455] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Shi-Yu Liu
- Key Laboratory
of Pesticide and Chemical Biology of Ministry of Education, International
Joint Research Center for Intelligent Biosensor Technology and Health,
and Chemical Biology Center, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Hao Xiong
- Key Laboratory
of Pesticide and Chemical Biology of Ministry of Education, International
Joint Research Center for Intelligent Biosensor Technology and Health,
and Chemical Biology Center, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Rong-Rong Li
- Key Laboratory
of Pesticide and Chemical Biology of Ministry of Education, International
Joint Research Center for Intelligent Biosensor Technology and Health,
and Chemical Biology Center, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Wen-Chao Yang
- Key Laboratory
of Pesticide and Chemical Biology of Ministry of Education, International
Joint Research Center for Intelligent Biosensor Technology and Health,
and Chemical Biology Center, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Guang-Fu Yang
- Key Laboratory
of Pesticide and Chemical Biology of Ministry of Education, International
Joint Research Center for Intelligent Biosensor Technology and Health,
and Chemical Biology Center, College of Chemistry, Central China Normal University, Wuhan 430079, People’s Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 30071, People’s Republic of China
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9
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Wu D, Wang Y, Zhang H, Du M, Li T. Acacetin attenuates mice endotoxin-induced acute lung injury via augmentation of heme oxygenase-1 activity. Inflammopharmacology 2017; 26:635-643. [PMID: 28988328 DOI: 10.1007/s10787-017-0398-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 09/09/2017] [Indexed: 12/17/2022]
Abstract
Acacetin, a natural product, has a wide spectrum of biological activities such as antioxidant properties. In the present study, we examined whether Acacetin has any beneficial role on lipopolysaccharide (LPS)-induced acute lung injury (ALI) and, if so, whether its effect is mediated via heme oxygenase-1 (HO-1), an antioxidant enzyme playing an important role in ALI. Male BALB/c mice were stimulated with LPS intratracheal instillation to induce ALI. Acacetin was administrated 2 h after LPS challenge. Samples were harvested 10 h after LPS administration. We demonstrated that LPS challenge significantly induced lung histological alterations such as inflammation and edema. Acacetin administration notably attenuated these changes and reduced tumor necrosis factor-α and interleukin-1β in lung tissues. The LPS-induced reactive oxygen species generation was markedly suppressed by Acacetin. Furthermore, Acacetin treatment significantly elevated pulmonary HO-1 and nuclear factor erythroid-2-related factor 2 (Nrf2) activities. However, the beneficial action of Acacetin was markedly abolished when pretreated with zinc protoporphyrin, an inhibitor of HO-1. In in vitro studies, Acacetin notably increased the HO-1 expression in pulmonary microvascular endothelial cells. During knockdown of Nrf2 by siRNA, the effect of Acacetin on HO-1 expression was significantly reversed. Acacetin attenuates LPS-induced ALI in mice. This protective effect of Acacetin may be mediated, in part, through an HO-1-dependent pathway.
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Affiliation(s)
- Dongdong Wu
- Emergency Department, General Hospital of Chinese People's Liberation Army, No. 28 Fuxing Road, Haidian District, Beijing, 100853, People's Republic of China
| | - Yanan Wang
- Emergency Department, General Hospital of Chinese People's Liberation Army, No. 28 Fuxing Road, Haidian District, Beijing, 100853, People's Republic of China
| | - Heng Zhang
- Emergency Department, General Hospital of Chinese People's Liberation Army, No. 28 Fuxing Road, Haidian District, Beijing, 100853, People's Republic of China
| | - Minghua Du
- Emergency Department, General Hospital of Chinese People's Liberation Army, No. 28 Fuxing Road, Haidian District, Beijing, 100853, People's Republic of China
| | - Tanshi Li
- Emergency Department, General Hospital of Chinese People's Liberation Army, No. 28 Fuxing Road, Haidian District, Beijing, 100853, People's Republic of China.
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Chloroquine attenuates paraquat-induced lung injury in mice by altering inflammation, oxidative stress and fibrosis. Int Immunopharmacol 2017; 46:16-22. [PMID: 28249220 DOI: 10.1016/j.intimp.2017.02.020] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 02/16/2017] [Accepted: 02/18/2017] [Indexed: 12/14/2022]
Abstract
Paraquat is one of the most extensively used herbicides and has high toxicity for humans and animals. However, there is no effective treatment for paraquat poisoning. The aim of the present study was to evaluate the effects of chloroquine on paraquat-induced lung injury in mice. Mice received a single intraperitoneal injection of paraquat and a daily intraperitoneal injection of the indicated dosages of chloroquine or dexamethasone. The histological changes, inflammation and oxidative stress in the lungs were examined at day 3, and the degree of pulmonary fibrosis was examined at day 28. H&E staining showed that chloroquine markedly attenuated lung injury induced by paraquat. In addition, the inflammatory responses induced by paraquat were inhibited after treatment with chloroquine, as indicated by the decreased number of leukocytes, the reduced levels of TNF-α, IL-1β and IL-6 in the bronchoalveolar lavage fluid, the reduced NO content, and downregulation of iNOS expression in lung tissues. No different effect was found between high-dose chloroquine and dexamethasone. Additionally, the treatment with chloroquine increased the activity of SOD and decreased the level of MDA in the lung tissues. The expressions of the anti-oxidative proteins, Nrf2, HO-1 and NQO1, were also upregulated by chloroquine treatment. The high-dose chloroquine was more effective than dexamethasone in its anti-oxidation ability. Finally, the results of Masson's staining illustrated that chloroquine markedly attenuated fibrosis in the paraquat-exposed lungs. Immunohistochemistry staining showed that the expressions of the pro-fibrotic proteins TGF-β and α-SMA were downregulated after treatment with chloroquine. In conclusion, chloroquine effectively attenuated paraquat-induced lung injury in mice.
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11
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Guo Y, Ma L, Zhang F, Sun R, Li T. Neutrophil elastase ameliorates matrix metalloproteinase-9 to promote lipopolysaccharide-induced acute lung injury in mice 1. Acta Cir Bras 2017; 31:382-8. [PMID: 27355745 DOI: 10.1590/s0102-865020160060000004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 05/23/2016] [Indexed: 08/30/2023] Open
Abstract
PURPOSE To investigate the regulatory roles of neutrophil elastase (NE) and matrix metalloproteinase-9 (MMP-9) in lipopolysaccharide (LPS)-induced acute lung injury (ALI) in mice. METHODS To construct LPS-induced ALI mouse models, wild-type C57BL/6 mice were administered 5.0 mg/kg of LPS through endotracheal, and/or 1.0 mg/kg of ONO-5046, and/or 20.0 mg/kg of chemically modified tetracycline-3 (CMT-3) by gavage. The levels of MMP-9, tissue inhibitor of metalloprotease-1, interleukin (IL)-6 were detected by real time RT-PCR at 6 h, 24 h and 48 h, and tumor necrosis factor (TNF), lung wet-dry weight ratio, white blood cell (WBC) count and polymorphonuclear (PMN) count in bronchoalveolar lavage fluid (BALF) were tested at 48 h after administration. The 5-day survival analysis of the ALI mice was also performed. RESULTS Both ONO-5046 and CMT-3, regardless of being used individually or combined, significantly reduced the levels of MMP-9, IL-6, and TNF in lung tissue as well as in BALF, and the WBC and PMN count in BALF. Combined treatment with ONO-5046 and CMT-3 remarkably improved the survival rate of ALI mice. CONCLUSION Neutrophil elastase synergizes with matrix metalloproteinase-9 to promote and regulate the release of inflammatory mediators and the infiltration of inflammatory cells, consequently affecting the survival of lipopolysaccharide-induced acute lung injury mice.
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Affiliation(s)
- Yingfei Guo
- Department of Emergency, General Hospital of PLA, Beijing, China. Design the protocol, acquisition and analysis of data, technical procedures, manuscript writing, final approved.,Department of Emergency or Respiration, First Affiliated, General Hospital of PLA, Beijing, China. Statistical analysis, technical procedures, final approved the manuscript
| | - Lingyun Ma
- Department of Emergency, General Hospital of PLA, Beijing, China. Design the protocol, acquisition and analysis of data, technical procedures, manuscript writing, final approved.,Department of Emergency or Respiration, First Affiliated, General Hospital of PLA, Beijing, China. Statistical analysis, technical procedures, final approved the manuscript
| | - Fei Zhang
- Department of Emergency, General Hospital of PLA, Beijing, China. Design the protocol, acquisition and analysis of data, technical procedures, manuscript writing, final approved
| | - Rongju Sun
- Department of Emergency, General Hospital of PLA, Beijing, China. Design the protocol, acquisition and analysis of data, technical procedures, manuscript writing, final approved
| | - Tanshi Li
- Department of Emergency, General Hospital of PLA, Beijing, China. Design the protocol, acquisition and analysis of data, technical procedures, manuscript writing, final approved
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12
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Effects of a Soluble Epoxide Hydrolase Inhibitor on Lipopolysaccharide-Induced Acute Lung Injury in Mice. PLoS One 2016; 11:e0160359. [PMID: 27490848 PMCID: PMC4973880 DOI: 10.1371/journal.pone.0160359] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 07/18/2016] [Indexed: 01/02/2023] Open
Abstract
Objectives Inflammation plays a key role in the pathogenesis of acute lung injury (ALI). Soluble epoxide hydrolase (sEH) is suggested as a vital pharmacologic target for inflammation. In this study, we determined whether a sEH inhibitor, AUDA, exerts lung protection in lipopolysaccharide (LPS)-induced ALI in mice. Methods Male BALB/c mice were randomized to receive AUDA or vehicle intraperitoneal injection 4 h after LPS or phosphate buffered saline (PBS) intratracheal instillation. Samples were harvested 24 h post LPS or PBS administration. Results AUDA administration decreased the pulmonary levels of monocyte chemoattractant protein (MCP)-1 and tumor necrosis factor (TNF)-α. Improvement of oxygenation and lung edema were observed in AUDA treated group. AUDA significantly inhibited sEH activity, and elevated epoxyeicosatrienoic acids (EETs) levels in lung tissues. Moreover, LPS induced the activation of nuclear factor (NF)-κB was markedly dampened in AUDA treated group. Conclusion Administration of AUDA after the onset of LPS-induced ALI increased pulmonary levels of EETs, and ameliorated lung injury. sEH is a potential pharmacologic target for ALI.
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Improvement of ventilation-induced lung injury in a rodent model by inhibition of inhibitory κB kinase. J Trauma Acute Care Surg 2014; 76:1417-24. [DOI: 10.1097/ta.0000000000000229] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Shu YS, Tao W, Miao QB, Lu SC, Zhu YB. Galangin Dampens Mice Lipopolysaccharide-Induced Acute Lung Injury. Inflammation 2014; 37:1661-8. [DOI: 10.1007/s10753-014-9894-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Yuan Q, Jiang YW, Fang QH. Improving effect of Sivelestat on lipopolysaccharide-induced lung injury in rats. APMIS 2014; 122:810-7. [PMID: 24484066 DOI: 10.1111/apm.12222] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Accepted: 11/04/2013] [Indexed: 01/02/2023]
Abstract
Sepsis causes neutrophil sequestration in the lung, which leads to acute lung injury (ALI). Neutrophil elastase (NE) is thought to play an important role in the pathogenesis of ALI. This study investigated whether Sivelestat, a specific NE inhibitor, can attenuate ALI induced by lipopolysaccharide (LPS). In vivo, 30 male Wistar rats were divided into three groups (n = 10 each groups) on the basis of the reagent used, which were subjected to LPS injection with or without Sivelestat treatments to induce ALI model. Lung injury was assessed by pulmonary histology, lung wet-weight to dry-weight (W/D) ratio, immunohistochemical analysis of intercellular adhesion molecule-1 (ICAM-1), the number of myeloperoxidase (MPO)-positive cells, and gene expression of ICAM-1. In vitro, pulmonary microvascular endothelial cells (PMVECs) were stimulated with LPS in the presence and absence of Sivelestat; nuclear factor-κB (NF-κB) p65 was measured by immunocytochemistry staining and Western blotting. Infusion of LPS induced lung injury, in vivo, as demonstrated by pulmonary edema with infiltration of neutrophils, the increase in lung W/D ratio, the number of MPO-positive cells and enhanced expression of ICAM-1 and ICAM-1 gene. In vitro, the significant increased release of NF-κB p65 and its subsequent translocation into the nucleus in PMVECs. In contrast, Sivelestat treatment significantly ameliorated the LPS-induced lung injury, as judged by the marked improvement in all these indices. These results indicated that inhibition of NE attenuated LPS-induced lung injury through an inhibition of the inflammatory signaling pathway, besides the direct inhibitory effect on NE.
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Affiliation(s)
- Qing Yuan
- Department of Pulmonary and Critical Care Medicine, Beijing Shijitan Hospital Affiliated to Capital Medicine University, Beijing, China
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Chen J, Mo Y, Schlueter CF, Hoyle GW. Inhibition of chlorine-induced pulmonary inflammation and edema by mometasone and budesonide. Toxicol Appl Pharmacol 2013; 272:408-13. [PMID: 23800689 PMCID: PMC4005342 DOI: 10.1016/j.taap.2013.06.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 05/29/2013] [Accepted: 06/11/2013] [Indexed: 12/21/2022]
Abstract
Chlorine gas is a widely used industrial compound that is highly toxic by inhalation and is considered a chemical threat agent. Inhalation of high levels of chlorine results in acute lung injury characterized by pneumonitis, pulmonary edema, and decrements in lung function. Because inflammatory processes can promote damage in the injured lung, anti-inflammatory therapy may be of potential benefit for treating chemical-induced acute lung injury. We previously developed a chlorine inhalation model in which mice develop epithelial injury, neutrophilic inflammation, pulmonary edema, and impaired pulmonary function. This model was used to evaluate nine corticosteroids for the ability to inhibit chlorine-induced neutrophilic inflammation. Two of the most potent corticosteroids in this assay, mometasone and budesonide, were investigated further. Mometasone or budesonide administered intraperitoneally 1h after chlorine inhalation caused a dose-dependent inhibition of neutrophil influx in lung tissue sections and in the number of neutrophils in lung lavage fluid. Budesonide, but not mometasone, reduced the levels of the neutrophil attractant CXCL1 in lavage fluid 6h after exposure. Mometasone or budesonide also significantly inhibited pulmonary edema assessed 1 day after chlorine exposure. Chlorine inhalation resulted in airway hyperreactivity to inhaled methacholine, but neither mometasone nor budesonide significantly affected this parameter. The results suggest that mometasone and budesonide may represent potential treatments for chemical-induced lung injury.
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Affiliation(s)
- Jing Chen
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences, University of Louisville, Louisville, KY, USA
| | - Yiqun Mo
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences, University of Louisville, Louisville, KY, USA
| | - Connie F. Schlueter
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences, University of Louisville, Louisville, KY, USA
| | - Gary W. Hoyle
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences, University of Louisville, Louisville, KY, USA
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