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Watanabe H, Honda A, Ichinose T, Ishikawa R, Miyasaka N, Nagao M, Wang Z, Owokoniran OH, Qiu B, Higaki Y, Liu W, Okuda T, Matsuda T, Takano H. Ferruginous components of particulate matters in subway environments, α-Fe 2O 3 or Fe 3O 4, exacerbates allergies. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 355:124195. [PMID: 38776998 DOI: 10.1016/j.envpol.2024.124195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/11/2024] [Accepted: 05/20/2024] [Indexed: 05/25/2024]
Abstract
The respiratory effects of particulate matter (PM) in subway station platforms or tunnels have attracted considerable research attention. However, no studies have characterized the effects of subway PM on allergic immune responses. In this study, iron oxide (α-Fe2O3 and Fe3O4) particles-the main components of subway PM-were intratracheally administered to BALB/c mice where ovalbumin (OVA) induced allergic pulmonary inflammation. Iron oxide particles enhanced OVA-induced eosinophil recruitment around the bronchi and mucus production from airway epithelium. The concentrations of type 2 cytokines, namely, interleukin (IL)-5 and IL-13, in bronchial alveolar lavage fluids were increased by iron oxide particles. Iron oxide particles also increased the number of type 2 innate lymphoid cells and CD86+ cells in the lung. Moreover, phagocytosis of particles in lung cells was confirmed by Raman spectroscopy. In a subsequent in vitro study, bone marrow-derived antigen-presenting cells (APCs) isolated from NC/Nga mice were exposed to iron oxide particles and OVA. They were also exposed to outdoor ambient PM: Vehicle Exhaust Particulates (VEP) and Urban Aerosols (UA) as references. Iron oxide particles promoted the release of lactate dehydrogenase, C-X-C motif chemokine ligand 1 and IL-1α from APCs, which tended to be stronger than those of VEP. These results suggest that iron oxide particles enhance antigen presentation in the lungs, promoting allergic immune response in mice; iron oxide particles-induced death and inflammatory response of APCs can contribute to allergy exacerbation. Although iron oxide particles do not contain various compounds like VEP, iron oxide alone may have sufficient influence.
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Affiliation(s)
- Hikari Watanabe
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 606-8501, Japan
| | - Akiko Honda
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 606-8501, Japan.
| | - Takamichi Ichinose
- Graduate School of Global Environmental Studies, Kyoto University, Kyoto, 606-8501, Japan
| | - Raga Ishikawa
- Graduate School of Global Environmental Studies, Kyoto University, Kyoto, 606-8501, Japan
| | - Natsuko Miyasaka
- Graduate School of Global Environmental Studies, Kyoto University, Kyoto, 606-8501, Japan
| | - Megumi Nagao
- Graduate School of Global Environmental Studies, Kyoto University, Kyoto, 606-8501, Japan
| | - Zaoshi Wang
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 606-8501, Japan
| | | | - Binyang Qiu
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 606-8501, Japan
| | - Yuya Higaki
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 606-8501, Japan
| | - Wei Liu
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 606-8501, Japan
| | - Tomoaki Okuda
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Kanagawa, 223-8522, Japan
| | - Tomonari Matsuda
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 606-8501, Japan; Research Center for Environmental Quality Management, Kyoto University, Shiga, 520-0811, Japan
| | - Hirohisa Takano
- Graduate School of Global Environmental Studies, Kyoto University, Kyoto, 606-8501, Japan; Institute for International Academic Research, Kyoto University of Advanced Science, Kyoto, 615-8577, Japan
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Bredeck G, Dos S Souza EJ, Wigmann C, Fomba KW, Herrmann H, Schins RPF. The influence of long-range transported Saharan dust on the inflammatory potency of ambient PM 2.5 and PM 10. ENVIRONMENTAL RESEARCH 2024; 252:119008. [PMID: 38663670 DOI: 10.1016/j.envres.2024.119008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024]
Abstract
Although desert dust promotes morbidity and mortality, it is exempt from regulations. Its health effects have been related to its inflammatory properties, which can vary between source regions. It remains unclear which constituents cause this variability. Moreover, whether long-range transported desert dust potentiates the hazardousness of local particulate matter (PM) is still unresolved. We aimed to assess the influence of long-range transported desert dust on the inflammatory potency of PM2.5 and PM10 collected in Cape Verde and to examine associated constituents. During a reference period and two Saharan dust events, 63 PM2.5 and PM10 samples were collected at four sampling stations. The content of water-soluble ions, elements, and organic and elemental carbon was measured in all samples and endotoxins in PM10 samples. The PM-induced release of inflammatory cytokines from differentiated THP-1 macrophages was evaluated. The association of interleukin (IL)-1β release with PM composition was assessed using principal component (PC) regressions. PM2.5 from both dust events and PM10 from one event caused higher IL-1β release than PM from the reference period. PC regressions indicated an inverse relation of IL-1β release with sea spray ions in both size fractions and organic and elemental carbon in PM2.5. The PC with the higher regression coefficient suggested that iron and manganese may contribute to PM2.5-induced IL-1β release. Only during the reference period, endotoxin content strongly differed between sampling stations and correlated with inflammatory potency. Our results demonstrate that long-range transported desert dust amplifies the hazardousness of local air pollution and suggest that, in PM2.5, iron and manganese may be important. Our data indicate that endotoxins are contained in local and long-range transported PM10 but only explain the variability in inflammatory potency of local PM10. The increasing inflammatory potency of respirable and inhalable PM from desert dust events warrants regulatory measures and risk mitigation strategies.
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Affiliation(s)
- Gerrit Bredeck
- IUF - Leibniz Research Institute for Environmental Medicine, 40225 Düsseldorf, Auf'm Hennekamp 50, Germany
| | - Eduardo J Dos S Souza
- Atmospheric Chemistry Department (ACD), Leibniz-Institute for Tropospheric Research (TROPOS), 04318, Leipzig, Permoserstr. 15, Germany
| | - Claudia Wigmann
- IUF - Leibniz Research Institute for Environmental Medicine, 40225 Düsseldorf, Auf'm Hennekamp 50, Germany
| | - Khanneh Wadinga Fomba
- Atmospheric Chemistry Department (ACD), Leibniz-Institute for Tropospheric Research (TROPOS), 04318, Leipzig, Permoserstr. 15, Germany
| | - Hartmut Herrmann
- Atmospheric Chemistry Department (ACD), Leibniz-Institute for Tropospheric Research (TROPOS), 04318, Leipzig, Permoserstr. 15, Germany
| | - Roel P F Schins
- IUF - Leibniz Research Institute for Environmental Medicine, 40225 Düsseldorf, Auf'm Hennekamp 50, Germany.
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Jin X, Chen Y, Xu B, Tian H. Exercise-Mediated Protection against Air Pollution-Induced Immune Damage: Mechanisms, Challenges, and Future Directions. BIOLOGY 2024; 13:247. [PMID: 38666859 PMCID: PMC11047937 DOI: 10.3390/biology13040247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/29/2024] [Accepted: 04/03/2024] [Indexed: 04/28/2024]
Abstract
Air pollution, a serious risk factor for human health, can lead to immune damage and various diseases. Long-term exposure to air pollutants can trigger oxidative stress and inflammatory responses (the main sources of immune impairment) in the body. Exercise has been shown to modulate anti-inflammatory and antioxidant statuses, enhance immune cell activity, as well as protect against immune damage caused by air pollution. However, the underlying mechanisms involved in the protective effects of exercise on pollutant-induced damage and the safe threshold for exercise in polluted environments remain elusive. In contrast to the extensive research on the pathogenesis of air pollution and the preventive role of exercise in enhancing fitness, investigations into exercise resistance to injury caused by air pollution are still in their infancy. In this review, we analyze evidence from humans, animals, and cell experiments on the combined effects of exercise and air pollution on immune health outcomes, with an emphasis on oxidative stress, inflammatory responses, and immune cells. We also propose possible mechanisms and directions for future research on exercise resistance to pollutant-induced damage in the body. Furthermore, we suggest strengthening epidemiological studies at different population levels and investigations on immune cells to guide how to determine the safety thresholds for exercise in polluted environments.
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Affiliation(s)
| | | | - Bingxiang Xu
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China; (X.J.); (Y.C.)
| | - Haili Tian
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China; (X.J.); (Y.C.)
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Navarro A, Del Moral A, Weber B, Weber J, Molinero A, Delgado R, Párraga J, Martínez-Checa F. Microbial composition of Saharan dust plumes deposited as red rain in Granada (Southern Spain). THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 913:169745. [PMID: 38163611 DOI: 10.1016/j.scitotenv.2023.169745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/26/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
During durst storms, also biological material is transported from arid areas such as the Sahara Desert. In the present work, rain samples containing significant amounts of mineral dust have been collected in Granada during different red rain episodes. Biological features (bacteria, biofilm, pollen grain and fungal spore) as well as size-particle distribution and mineralogical composition were studied by SEM. Nanobacteria were observed for the first time in red rain samples. A preliminary metabarcoding analysis was performed on three red rain samples. Here, Bacillota made up 18 % and Pseudomonadota 23 % of the whole prokaryotic community. The fungal community was characterized by a high abundance of Ascomycota and, dependent on the origin, the presence of Chytridiomycota. By means of 16S rRNA sequencing, 18 cultivable microorganisms were identified. In general, members of the phyla Pseudomonadota and Bacillota made up the majority of taxa. Some species, such as Peribacillus frigoritolerans and Bacillus halotolerans were isolated during three different red rain episodes. Generally, red rain carries a wide variety of microorganisms, being their ecosystem and health effects largely unknown.
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Affiliation(s)
- Azahara Navarro
- Department of Edaphology and Agricultural Chemistry, University of Granada, Granada, Spain
| | - Ana Del Moral
- Department of Microbiology, University of Granada, Granada, Spain.
| | - Bettina Weber
- Institute of Plant Sciences, University of Graz, Graz, Austria; Multiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, Germany
| | - Jens Weber
- Institute of Plant Sciences, University of Graz, Graz, Austria
| | - Alberto Molinero
- Department of Edaphology and Agricultural Chemistry, University of Granada, Granada, Spain
| | - Rafael Delgado
- Department of Edaphology and Agricultural Chemistry, University of Granada, Granada, Spain
| | - Jesús Párraga
- Department of Edaphology and Agricultural Chemistry, University of Granada, Granada, Spain
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Wang J, Xue R, Li C, Hu L, Li Q, Sun Y, Chen Y, Yuan W, Xia Q, Hu L, Wei Y, He M. Inhalation of subway fine particles induces murine extrapulmonary organs damage. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 878:163181. [PMID: 37001660 DOI: 10.1016/j.scitotenv.2023.163181] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/24/2023] [Accepted: 03/27/2023] [Indexed: 05/13/2023]
Abstract
Because of its speed and convenience, the subway has become the first choice for travel by many residents. However, the concentration of fine particles (PM2.5) in the air of a subway platform is higher than that of the ground level or carriage. Moreover, the composition and source of subway PM2.5 differ from those of atmospheric PM2.5. Currently, there is insufficient research on the impact of subway PM2.5 on health. In this study, intratracheally subway PM2.5-inoculated wild type (WT) and Rag1-/- mice, lacking functional T cells and B cells, were used to investigate the potential of subway PM2.5 exposure to cause extrapulmonary organ injuries. Subway PM2.5 increased inflammatory cells infiltration, tumor necrosis factor (TNF)-α, interleukin (IL)-6, as well as monocyte chemotactic protein (MCP)-1 gene and protein expression, cyclooxygenase-2 (COX-2) induction, and Toll-like receptor (TLR)-2, TLR4, myeloid differentiation factor 88 (MyD88), and nuclear factor (NF)-κB levels in liver, kidney, spleen, and thymus in a dose-dependent fashion in WT mice. Subway PM2.5 exposure resulted in slight macrophage (F4/80+) and neutrophil (Ly6G+) infiltration and caused no increase in the protein levels of TNF-α, IL-6, MCP-1, or COX-2 in the liver, kidneys, spleen, and thymus of Rag1-/- mice. These results demonstrate a dose-response manner between subway PM2.5 exposure and inflammatory injuries of extrapulmonary organs, which could be related to the TLR/MyD88/NF-κB signaling pathway. Subway PM2.5-induced extrapulmonary organ damage was dependent on T cells and B cells; this finding may provide insight for research on the mechanisms responsible for the health hazards posed by air pollution.
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Affiliation(s)
- Jiawei Wang
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Rou Xue
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Chao Li
- Division of Pneumoconiosis, School of Public Health, China Medical University, Shenyang, China
| | - Liwen Hu
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Qidian Li
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Yuan Sun
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Yuwei Chen
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Wenke Yuan
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Qing Xia
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Longji Hu
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Yuan Wei
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
| | - Miao He
- Liaoning Key Laboratory of Environmental Health Damage Research and Assessment, Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China.
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Wang D, Zeng Z, Shen M, Okazaki R, Miyata H, Yonezawa T, Yoshida Y. ATP Consumption Is Coupled with Endocytosis in Exudated Neutrophils. Int J Mol Sci 2023; 24:ijms24109039. [PMID: 37240384 DOI: 10.3390/ijms24109039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/30/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
Neutrophil energy metabolism during phagocytosis has been previously reported, and adenosine triphosphate (ATP) plays a crucial role in endocytosis. Neutrophils are prepared by intraperitoneal injection of thioglycolate for 4 h. We previously reported a system established for measuring particulate matter endocytosis by neutrophils using flow cytometry. In this study, we utilized this system to investigate the relationship between endocytosis and energy consumption in neutrophils. A dynamin inhibitor suppressed ATP consumption triggered by neutrophil endocytosis. In the presence of exogenous ATP, neutrophils behave differently during endocytosis depending on ATP concentration. The inhibition of ATP synthase and nicotinamide adenine dinucleotide phosphate oxidase but not phosphatidylinositol-3 kinase suppresses neutrophil endocytosis. The nuclear factor kappa B was activated during endocytosis and inhibited by I kappa B kinase (IKK) inhibitors. Notably, IKK inhibitors restored endocytosis-triggered ATP consumption. Furthermore, data from the NLR family pyrin domain containing three knockout mice suggest that inflammasome activation is not involved in neutrophil endocytosis or concomitant ATP consumption. To summarize, these molecular events occur via endocytosis, which is closely related to ATP-centered energy metabolism.
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Affiliation(s)
- Duo Wang
- Department of Radiobiology and Hygiene Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - Zirui Zeng
- The First Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - Mengyue Shen
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
- Department of Medical Teaching, West China Center of Medical Sciences of Sichuan University, Chengdu 610041, China
| | - Ryuji Okazaki
- Department of Radiobiology and Hygiene Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - Hironori Miyata
- Laboratory Animal Research Center, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - Tomo Yonezawa
- Division of Functional Genomics and Therapeutic Innovation, Research Center for Advanced Genomics, Graduate School of Biomedical Sciences, Nagasaki University, 1-12-14 Sakamoto, Nagasaki 852-8523, Japan
| | - Yasuhiro Yoshida
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
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Integrated Network Pharmacology and Gut Microbiota Analysis to Explore the Mechanism of Sijunzi Decoction Involved in Alleviating Airway Inflammation in a Mouse Model of Asthma. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2023; 2023:1130893. [PMID: 36636604 PMCID: PMC9831717 DOI: 10.1155/2023/1130893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 12/17/2022] [Accepted: 12/20/2022] [Indexed: 01/05/2023]
Abstract
Background Asthma is a chronic inflammatory disease of the airways with recurrent attacks, which seriously affects the patients' quality of life and even threatens their lives. The disease can even threaten the lives of patients. Sijunzi decoction (SJZD), a classical Chinese medicine formula with a long history of administration, is a basic formula used for the treatment of asthma and demonstrates remarkable efficacy. However, the underlying mechanism has not been elucidated. Materials and Methods We aimed to integrate network pharmacology and intestinal flora sequencing analysis to study the mechanism of SJZD in the treatment of allergic asthmatic mice. The active compounds of SJZD and their asthma-related targets were predicted by various databases. We performed Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses to identify potentially relevant pathways for target genes. Furthermore, the active compound-target and target-signaling pathway network maps were constructed by using Cytoscape 3.8.2. These results were combined with those of the intestinal flora sequencing analysis to study the influence of SJZD on airway inflammation in allergic asthmatic mice. Result We obtained 137 active compounds from SJZD and associated them with 1445 asthma-related targets acquired from the databases. A total of 109 common targets were identified. We visualized active compound-target and target-signaling pathway network maps. The pathological analysis and inflammation score results suggested that SJZD could alleviate airway inflammation in asthmatic mice. Sequencing analysis of intestinal flora showed that SJZD could increase the relevant abundance of beneficial bacterial genus and maintain the balance of the intestinal flora. The core toll-like receptor (TLR) signaling pathway was identified based on network pharmacology analysis, and the important role TLRs play in intestinal flora and organismal immunity was also recognized. The analysis of the correlation between environmental factors and intestinal flora revealed that beneficial bacterial genera were negatively correlated with TLR2 and positively correlated with the TLR7 expression. Furthermore, they were positively correlated with IFN-γ and IL-10 levels and negatively correlated with IL-4 and IL-17 levels. Conclusion SJZD alleviated the airway inflammation state in asthmatic mice. The findings suggest that increasing the relevant abundance of beneficial intestinal bacteria in mice with asthma, regulating intestinal flora, interfering with the level of TLR2 and TLR7 expression to adjust the secretion of inflammatory factors, and alleviating asthmatic airway inflammation may be the possible mechanism involved in the treatment of asthma by SJZD, providing a basis for further studies on SJZD.
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Wang W, Li Y, Han G, Li A, Kong X. Lactobacillus fermentum CECT5716 Alleviates the Inflammatory Response in Asthma by Regulating TLR2/TLR4 Expression. Front Nutr 2022; 9:931427. [PMID: 35911120 PMCID: PMC9331901 DOI: 10.3389/fnut.2022.931427] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 06/20/2022] [Indexed: 11/13/2022] Open
Abstract
Background Asthma is a chronic disease, which is harmful to the health of the body and the quality of life. Supplementation of Lactobacillus can affect the immune environment of the lungs through the gut-lung axis. This study aimed to explore the potential regulatory targets of Lactobacillus to relieve inflammation in asthma and determine a new approach for improving asthma. Methods A mouse ovalbumin (OVA)-induced model was constructed. OVA mice were supplemented with Lactobacillus fermentum CECT5716 by gavage. The gut microbiota composition of normal and OVA mice was analyzed using 16S ribosomal DNA identification. BALF, serum, lung tissues, and duodenal tissues were collected. Wright’s staining was performed to determine the cell content of the alveolar lavage fluid. Hematoxylin-eosin staining, Masson staining, and periodic acid-Schiff staining were performed to observe the improvement in the lungs of OVA mice supplemented with Lactobacillus. Immunofluorescence was performed to measure the severity of the intestinal barrier leakage. Enzyme-linked immunosorbent assay was carried out to determine the expression levels of inflammatory cell factors, while quantitative reverse transcription-polymerase chain reaction and western blotting were performed to detect the levels of toll-like receptor 2 (TLR2)/TLR4 expression and cell adhesion factors. Results Compared with Control mice, OVA mice exhibited malignant conditions, such as intestinal leakage and lung edema. After supplementation with Lactobacillus, the inflammatory cell content in the bronchoalveolar lavage fluid decreased, and the inflammatory response was alleviated. The level of TLR2/TLR4 expression was reduced. The inflammatory cell infiltration in the airway mucosa of OVA mice was improved, alveolar swelling was reduced and the basement membrane appeared thinner. Conclusion The Lactobacillus inhibited the TLR2/TLR4 expression in OVA mice. Supplementation with Lactobacillus can alleviate the inflammatory response in OVA mice, inhibit pulmonary fibrosis, and treat asthma.
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Affiliation(s)
- Weifang Wang
- Department of Respiratory and Critical Care Medicine, The Eighth Medical Center of the PLA General Hospital, Beijing, China
| | - Yunfeng Li
- Hebei Key Laboratory of Chinese Medicine Research on Cardio-Cerebrovascular Disease, Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Guojing Han
- Department of Respiratory and Critical Care Medicine, The Eighth Medical Center of the PLA General Hospital, Beijing, China
| | - Aimin Li
- NHC Key Laboratory of Pneumoconiosis, Shanxi Key Laboratory of Respiratory Diseases, Department of Pulmonary and Critical Care Medicine, The First Hospital of Shanxi Medical University, Taiyuan, China
- *Correspondence: Aimin Li,
| | - Xiaomei Kong
- NHC Key Laboratory of Pneumoconiosis, Shanxi Key Laboratory of Respiratory Diseases, Department of Pulmonary and Critical Care Medicine, The First Hospital of Shanxi Medical University, Taiyuan, China
- Xiaomei Kong,
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9
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Sadakane K, Ichinose T, Maki T, Nishikawa M. Co-exposure of peptidoglycan and heat-inactivated Asian sand dust exacerbates ovalbumin-induced allergic airway inflammation in mice. Inhal Toxicol 2022; 34:231-243. [PMID: 35698289 DOI: 10.1080/08958378.2022.2086650] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AIMS Asian sand dust (ASD) comprises soil particles, microorganisms, and various chemical components. We examined whether peptidoglycan (PGN), a structural cell wall component of Gram-positive bacteria, exacerbates ASD-induced allergic airway inflammation in mice. METHODS The ASD (median diameter ∼4 µm) used was a certified reference material from the National Institute for Environmental Studies in Japan, derived from Gobi Desert surface soil collected in 2011. BALB/c mice were intratracheally exposed to PGN, heat-inactivated ASD (H-ASD), and ovalbumin (OVA), individually and in combination. Twenty-four hours after the final intratracheal administration, bronchoalveolar lavage fluid (BALF) and serum samples were collected. Inflammatory cell count, cytokine levels in the BALF, OVA-specific immunoglobulin levels in the serum, and pathological changes in the lungs were analyzed. RESULTS AND DISCUSSION After OVA + PGN + H-ASD treatment, the number of eosinophils, neutrophils, and macrophages in the BALF and of eosinophils in the lung tissue was significantly higher than that after OVA + PGN or OVA + H-ASD treatment. Moreover, levels of chemokines and cytokines associated with eosinophil recruitment and activation were significantly higher in the BALF of this group than in that of the OVA + PGN group, and tended to be higher than those in the OVA + H-ASD group. Pathological changes in the lungs were most severe in mice treated with OVA + PGN + H-ASD. CONCLUSIONS Our results indicate that PGN is involved in the exacerbation of ASD-induced allergic airway inflammation in mice. Thus, inhalation of ASD containing Gram-positive bacteria may trigger allergic bronchial asthma.
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Affiliation(s)
- Kaori Sadakane
- Department of Health Sciences, Oita University of Nursing and Health Sciences, Oita, Japan
| | - Takamichi Ichinose
- Department of Health Sciences, Oita University of Nursing and Health Sciences, Oita, Japan.,Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Teruya Maki
- Department of Life Science, Kindai University, Osaka, Japan
| | - Masataka Nishikawa
- Environmental Standards Section, National Institute for Environmental Studies, Ibaraki, Japan
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10
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Berman R, Rose CS, Downey GP, Day BJ, Chu HW. Role of Particulate Matter from Afghanistan and Iraq in Deployment-Related Lung Disease. Chem Res Toxicol 2021; 34:2408-2423. [PMID: 34808040 DOI: 10.1021/acs.chemrestox.1c00090] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Approximately 3 million United States military personnel and contractors were deployed to Southwest Asia and Afghanistan over the past two decades. After returning to the United States, many developed persistent respiratory symptoms, including those due to asthma, rhinosinusitis, bronchiolitis, and others, which we collectively refer to as deployment-related lung diseases (DRLD). The mechanisms of different DRLD have not been well defined. Limited studies from us and others suggest that multiple factors and biological signaling pathways contribute to the onset of DRLD. These include, but are not limited to, exposures to high levels of particulate matter (PM) from sandstorms, burn pit combustion products, improvised explosive devices, and diesel exhaust particles. Once inhaled, these hazardous substances can activate lung immune and structural cells to initiate numerous cell-signaling pathways such as oxidative stress, Toll-like receptors, and cytokine-driven cell injury (e.g., interleukin-33). These biological events may lead to a pro-inflammatory response and airway hyperresponsiveness. Additionally, exposures to PM and other environmental hazards may predispose military personnel and contractors to more severe disease due to the interactions of those hazardous materials with subsequent exposures to allergens and cigarette smoke. Understanding how airborne exposures during deployment contribute to DRLD may identify effective targets to alleviate respiratory diseases and improve quality of life in veterans and active duty military personnel.
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Affiliation(s)
- Reena Berman
- Department of Medicine, National Jewish Health, 1400 Jackson Street, Denver, Colorado 80206, United States
| | - Cecile S Rose
- Department of Medicine, National Jewish Health, 1400 Jackson Street, Denver, Colorado 80206, United States
| | - Gregory P Downey
- Department of Medicine, National Jewish Health, 1400 Jackson Street, Denver, Colorado 80206, United States
| | - Brian J Day
- Department of Medicine, National Jewish Health, 1400 Jackson Street, Denver, Colorado 80206, United States
| | - Hong Wei Chu
- Department of Medicine, National Jewish Health, 1400 Jackson Street, Denver, Colorado 80206, United States
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Fussell JC, Kelly FJ. Mechanisms underlying the health effects of desert sand dust. ENVIRONMENT INTERNATIONAL 2021; 157:106790. [PMID: 34333291 PMCID: PMC8484861 DOI: 10.1016/j.envint.2021.106790] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 06/21/2021] [Accepted: 07/19/2021] [Indexed: 05/28/2023]
Abstract
Desertification and climate change indicate a future expansion of the global area of dry land and an increase in the risk of drought. Humans may therefore be at an ever-increasing risk of frequent exposure to, and resultant adverse health effects of desert sand dust. This review appraises a total of 52 experimental studies that have sought to identify mechanisms and intermediate endpoints underlying epidemiological evidence of an impact of desert dust on cardiovascular and respiratory health. Toxicological studies, in main using doses that reflect or at least approach real world exposures during a dust event, have demonstrated that virgin sand dust particles and dust storm particles sampled at remote locations away from the source induce inflammatory lung injury and aggravate allergen-induced nasal and pulmonary eosinophilia. Effects are orchestrated by cytokines, chemokines and antigen-specific immunoglobulin potentially via toll-like receptor/myeloid differentiation factor signaling pathways. Findings suggest that in addition to involvement of adhered chemical and biological pollutants, mineralogical components may also be implicated in the pathogenesis of human respiratory disorders during a dust event. Whilst comparisons with urban particulate matter less than 2.5 μm in diameter (PM2.5) suggest that allergic inflammatory responses are greater for microbial element-rich dust- PM2.5, aerosols generated during dust events appear to have a lower oxidative potential compared to combustion-generated PM2.5 sampled during non-dust periods. In vitro findings suggest that the significant amounts of suspended desert dust during storm periods may provide a platform to intermix with chemicals on its surfaces, thereby increasing the bioreactivity of PM2.5 during dust storm episodes, and that mineral dust surface reactions are an unrecognized source of toxic organic chemicals in the atmosphere, enhancing toxicity of aerosols in urban environments. In summary, the experimental research on desert dust on respiratory endpoints go some way in clarifying the mechanistic effects of atmospheric desert dust on the upper and lower human respiratory system. In doing so, they provide support for biological plausibility of epidemiological associations between this particulate air pollutant and events including exacerbation of asthma, hospitalization for respiratory infections and seasonal allergic rhinitis.
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Affiliation(s)
- Julia C Fussell
- National Institute for Health Research Health Protection Research Unit in Environmental Exposures and Health, School of Public Health, Sir Michael Uren Building, Imperial College London, White City Campus, 80-92 Wood Lane, London W12 0BZ, United Kingdom.
| | - Frank J Kelly
- National Institute for Health Research Health Protection Research Unit in Environmental Exposures and Health, School of Public Health, Sir Michael Uren Building, Imperial College London, White City Campus, 80-92 Wood Lane, London W12 0BZ, United Kingdom
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12
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Kan X, Chen Y, Huang B, Fu S, Guo W, Ran X, Cao Y, Xu D, Cheng J, Yang Z, Xu Y. Effect of Palrnatine on lipopolysaccharide-induced acute lung injury by inhibiting activation of the Akt/NF -κB pathway. J Zhejiang Univ Sci B 2021; 22:929-940. [PMID: 34783223 DOI: 10.1631/jzus.b2000583] [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] [Indexed: 01/03/2023]
Abstract
Inflammation plays an important role in the development of acute lung injury (ALI). Severe pulmonary inflammation can cause acute respiratory distress syndrome (ARDS) or even death. Expression of proinflammatory interleukin-1β (IL-1β) and inducible nitric oxide synthase (iNOS) in the process of pulmonary inflammation will further exacerbate the severity of ALI. The purpose of this study was to explore the effect of Palrnatine (Pa) on lipopolysaccharide (LPS)-induced mouse ALI and its underlying mechanism. Pa, a natural product, has a wide range of pharmacological activities with the potential to protect against lung injury. Western blotting and quantitative real-time polymerase chain reaction (qRT-PCR) assays were performed to detect the expression and translation of inflammatory genes and proteins in vitro and in vivo. Immunoprecipitation was used to detect the degree of P65 translocation into the nucleus. We also used molecular modeling to further clarify the mechanism of action. The results showed that Pa pretreatment could significantly inhibit the expression and secretion of the inflammatory cytokine IL-1β, and significantly reduce the protein level of the proinflammatory protease iNOS, in both in vivo and in vitro models induced by LPS. Further mechanism studies showed that Pa could significantly inhibit the activation of the protein kinase B (Akt)/nuclear factor-κB (NF-κB) signaling pathway in the LPS-induced ALI mode and in LPS-induced RAW264.7 cells. Through molecular dynamics simulation, we observed that Pa was bound to the catalytic pocket of Akt and effectively inhibited the biological activity of Akt. These results indicated that Pa significantly relieves LPS-induced ALI by activating the Akt/NF-κB signaling pathway.
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Affiliation(s)
- Xingchi Kan
- Department of Theoretic Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun 130012, China
| | - Yingsheng Chen
- Department of Theoretic Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun 130012, China
| | - Bingxu Huang
- Department of Theoretic Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun 130012, China
| | - Shoupeng Fu
- Department of Theoretic Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun 130012, China
| | - Wenjin Guo
- Department of Theoretic Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun 130012, China
| | - Xin Ran
- Department of Theoretic Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun 130012, China
| | - Yu Cao
- Department of Theoretic Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun 130012, China
| | - Dianwen Xu
- Department of Theoretic Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun 130012, China
| | - Ji Cheng
- Department of Theoretic Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun 130012, China
| | - Zhanqing Yang
- Department of Theoretic Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun 130012, China
| | - Yanling Xu
- Department of Respiratory Medicine, the Second Hospital, Jilin University, Changchun 130012, China.
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First case of low-dose umbilical cord blood therapy for pediatric acute respiratory distress syndrome induced by Pneumocystis carinii pneumonia. Eur J Med Res 2021; 26:100. [PMID: 34454624 PMCID: PMC8397599 DOI: 10.1186/s40001-021-00548-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 07/07/2021] [Indexed: 01/02/2023] Open
Abstract
Objective This study aimed to present the case of a boy with acute distress syndrome (ARDS) treated with low-dose umbilical cord blood (UCB) therapy and explore the underlying possible mechanism. Methods A 7-year-old boy with severe Pneumocystis carinii pneumonia and severe ARDS was treated with allogeneic UCB as salvage therapy. Results The patient did not improve after being treated with lung protective ventilation, pulmonary surfactant replacement, and extracorporeal membrane oxygenation (ECMO) for 30 days. However, his disease reversed 5 days after allogeneic UCB infusion, and he weaned from ECMO after 7 days of infusion. Bioinformatics confirmed that his Toll-like receptor (TLR) was abnormal before UCB infusion. However, after the infusion, his immune system was activated and repaired, and the TLR4/MyD88/NF-κB signaling pathway was recovered. Conclusion Allogenic UCB could treat ARDS by repairing the TLR4/MyD88/NF-κB signaling pathway, thereby achieving stability of the immune system.
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Wang YR, Zhang XN, Meng FG, Zeng T. Targeting macrophage polarization by Nrf2 agonists for treating various xenobiotics-induced toxic responses. Toxicol Mech Methods 2021; 31:334-342. [PMID: 33627030 DOI: 10.1080/15376516.2021.1894624] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Macrophages can polarize into different phenotypes in response to different microenvironmental stimuli. Macrophage polarization has been assigned to two extreme states, namely proinflammatory M1 and anti-inflammatory M2. Accumulating evidences have demonstrated that M1 polarized macrophages contribute to various toxicants-induced deleterious effects. Switching macrophages from proinflammatory M1 phenotype toward anti-inflammatory M2 phenotype could be a promising approach for treating various inflammatory diseases. Studies in the past few decades have revealed that nuclear factor erythroid 2-related factor 2 (Nrf2) can modulate the polarization of macrophages. Specifically, activation of Nrf2 could block M1 stimuli-induced production of proinflammatory cytokines and chemokines, and shift the polarization of macrophages toward M2 by cross-talking with nuclear factor kappa-B (NF-κB), mitogen-activated protein kinases (MAPKs), peroxisome proliferator-activated receptor γ (PPARγ), and autophagy. Importantly, a great number of studies have confirmed the beneficial effects of natural and synthesized Nrf2 agonists on various inflammatory diseases; however, most of these compounds are far away from clinical application due to lack of characterization and defects of study designs. Interestingly, some endogenous Nrf2 inducers and compounds with dual activities (such as the Nrf2 inducing and CO releasing effects) exhibit potent anti-inflammatory effects, which points out an important direction for future researches.
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Affiliation(s)
- Yi-Ran Wang
- Institute of Toxicology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Xiu-Ning Zhang
- Institute of Toxicology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Fan-Ge Meng
- Institute of Toxicology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Tao Zeng
- Institute of Toxicology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
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Mechanistic Implications of Biomass-Derived Particulate Matter for Immunity and Immune Disorders. TOXICS 2021; 9:toxics9020018. [PMID: 33498426 PMCID: PMC7909393 DOI: 10.3390/toxics9020018] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 01/04/2021] [Accepted: 01/15/2021] [Indexed: 12/29/2022]
Abstract
Particulate matter (PM) is a major and the most harmful component of urban air pollution, which may adversely affect human health. PM exposure has been associated with several human diseases, notably respiratory and cardiovascular diseases. In particular, recent evidence suggests that exposure to biomass-derived PM associates with airway inflammation and can aggravate asthma and other allergic diseases. Defective or excess responsiveness in the immune system regulates distinct pathologies, such as infections, hypersensitivity, and malignancies. Therefore, PM-induced modulation of the immune system is crucial for understanding how it causes these diseases and highlighting key molecular mechanisms that can mitigate the underlying pathologies. Emerging evidence has revealed that immune responses to biomass-derived PM exposure are closely associated with the risk of diverse hypersensitivity disorders, including asthma, allergic rhinitis, atopic dermatitis, and allergen sensitization. Moreover, immunological alteration by PM accounts for increased susceptibility to infectious diseases, such as tuberculosis and coronavirus disease-2019 (COVID-19). Evidence-based understanding of the immunological effects of PM and the molecular machinery would provide novel insights into clinical interventions or prevention against acute and chronic environmental disorders induced by biomass-derived PM.
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16
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Kelly FJ, Fussell JC. Global nature of airborne particle toxicity and health effects: a focus on megacities, wildfires, dust storms and residential biomass burning. Toxicol Res (Camb) 2020; 9:331-345. [PMID: 32905302 PMCID: PMC7467248 DOI: 10.1093/toxres/tfaa044] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 05/26/2020] [Accepted: 06/08/2020] [Indexed: 01/01/2023] Open
Abstract
Since air pollutants are difficult and expensive to control, a strong scientific underpinning to policies is needed to guide mitigation aimed at reducing the current burden on public health. Much of the evidence concerning hazard identification and risk quantification related to air pollution comes from epidemiological studies. This must be reinforced with mechanistic confirmation to infer causality. In this review we focus on data generated from four contrasting sources of particulate air pollution that result in high population exposures and thus where there remains an unmet need to protect health: urban air pollution in developing megacities, household biomass combustion, wildfires and desert dust storms. Taking each in turn, appropriate measures to protect populations will involve advocating smart cities and addressing economic and behavioural barriers to sustained adoption of clean stoves and fuels. Like all natural hazards, wildfires and dust storms are a feature of the landscape that cannot be removed. However, many efforts from emission containment (land/fire management practices), exposure avoidance and identifying susceptible populations can be taken to prepare for air pollution episodes and ensure people are out of harm's way when conditions are life-threatening. Communities residing in areas affected by unhealthy concentrations of any airborne particles will benefit from optimum communication via public awareness campaigns, designed to empower people to modify behaviour in a way that improves their health as well as the quality of the air they breathe.
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Affiliation(s)
- Frank J Kelly
- NIHR Health Protection Research Unit in Environmental Exposures and Health, School of Public Health, Sir Michael Uren Building, Imperial College London, White City Campus, 80-92 Wood Lane, London W12 0BZ, UK
| | - Julia C Fussell
- NIHR Health Protection Research Unit in Environmental Exposures and Health, School of Public Health, Sir Michael Uren Building, Imperial College London, White City Campus, 80-92 Wood Lane, London W12 0BZ, UK
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The Role and Potential Pathogenic Mechanism of Particulate Matter in Childhood Asthma: A Review and Perspective. J Immunol Res 2020; 2020:8254909. [PMID: 32411804 PMCID: PMC7201641 DOI: 10.1155/2020/8254909] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 01/04/2020] [Indexed: 01/23/2023] Open
Abstract
Asthma, the most common chronic respiratory disease in children, affects numerous people worldwide. Accumulating evidence suggests that exposure to high levels of particulate matter (PM), either acutely or chronically, is associated with the exacerbation and incidence of pediatric asthma. However, the detailed pathogenic mechanisms by which PM contributes to the incidence of asthma remain largely unknown. In this short review, we summarize studies of relationships between PM and pediatric asthma and recent advances on the fundamental mechanisms of PM-related asthma, with emphases on cell death regulation and immune system responses. We further discuss the inadequacy of current studies and give a perspective on the prevention strategies for pediatric asthma.
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18
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Lai K, Long L. Current Status and Future Directions of Chronic Cough in China. Lung 2020; 198:23-29. [PMID: 31912413 DOI: 10.1007/s00408-019-00319-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 12/20/2019] [Indexed: 12/16/2022]
Abstract
Chronic cough is one of the most common complaints for which patients in China seek medical attention. However, there are no nationwide data on the prevalence and socioeconomic burden of chronic cough. Although approximately 50% of Chinese men smoke, the vast majority of patients presenting for evaluation of chronic cough are never smokers. An equal sex distribution and a middle-aged predominance have been observed in the Chinese chronic cough population, despite demonstration of a higher cough reflex sensitivity in females and older patients. The role of air pollution in the distinct age and sex distribution requires further study. In terms of the etiologies of chronic cough in China, cough-variant asthma, upper airway cough syndrome, nonasthmatic eosinophilic bronchitis, and atopic cough are the most common causes, comprising 75.2% to 87.6% of cases across different regions. Chinese Guidelines for Diagnosis and Treatment of Cough were initially published in 2005, and updated in 2009 and 2016. In addition, the China Cough Coalition was established in 2016. Great progress has been made in both cough-related clinical practice and research in recent years, however, there are still challenges ahead. To facilitate optimal management of chronic cough in China, efforts promoting the dissemination and application of published guidelines will be essential, especially in community-based healthcare and in rural regions. As chronic refractory cough has been identified as a huge challenge to clinicians worldwide, continued international cooperation will be essential in optimizing evaluation and management of chronic cough.
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Affiliation(s)
- Kefang Lai
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, 151 Yanjiang Rd., Guangzhou, 510120, China.
| | - Li Long
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, 151 Yanjiang Rd., Guangzhou, 510120, China
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Morita K, Wang D, Baba R, Morimoto H, Song Y, Kanazawa T, Yoshida Y. Particulate Matter, Asian Sand Dust Delays Cyclophosphamide-induced Type 1 Diabetes in NOD Mice. Immunol Invest 2019; 49:698-710. [DOI: 10.1080/08820139.2019.1699569] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Kentaro Morita
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Duo Wang
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Ryoko Baba
- Department of Anatomy (II), School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Hiroyuki Morimoto
- Department of Anatomy (II), School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Yuan Song
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
- Department of Clinical Laboratory, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Tamotsu Kanazawa
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Yasuhiro Yoshida
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
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20
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Ding J, Guo J, Wang L, Chen Y, Hu B, Li Y, Huang R, Cao J, Zhao Y, Geiser M, Miao Q, Liu Y, Chen C. Cellular Responses to Exposure to Outdoor Air from the Chinese Spring Festival at the Air-Liquid Interface. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:9128-9138. [PMID: 31268311 DOI: 10.1021/acs.est.9b00399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The Spring Festival is the most important holiday in China. During this time, the levels of particulate matter (PM) as well as gaseous copollutants significantly increase because of the widespread enjoyment of fireworks. The expression patterns of microRNAs may serve as valuable signatures of exposure to environmental constituents. We exposed macrophages to the whole stream of outdoor air at the air-liquid interface aiming at closely approximating the physiological conditions and the inhalation situation in the lung. 58 miRNAs were up-regulated, and 68 miRNAs were down-regulated in the night of the New Year's Eve (exposure group E2N1) compared to filtered-air exposed control cells. The target genes of the up-regulated miRNAs were enriched in immunity- and inflammation-linked pathways, such as the TLR-NF-κB pathway. Compared to the E2N1 group, 29 miRNAs were up-regulated, and 23 miRNAs were down-regulated in the cells exposed to air from the daytime of the Chinese New Year with higher concentrations of particles, SO2, and nitrogen oxide. The target genes of the up-regulated miRNAs were mostly enriched in apoptosis, adhesion, and junction-related pathways. These results preliminarily unravel part of the toxic mechanisms of air constituents and provide clues for discovering the main drivers of air pollution-induced disorders.
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Affiliation(s)
- Jie Ding
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience & Beijing Key Laboratory of Ambient Particles Health Effects and Prevention Techniques , National Center for Nanoscience and Technology of China and University of Chinese Academy of Sciences , Beijing 100190 , China
| | - Jincheng Guo
- CAS Key Laboratory of Intelligent Information Processing, Advanced Computer Research Center , Institute of Computing Technology, Chinese Academy of Sciences , Beijing 100190 , China
| | - Liming Wang
- Division of Nuclear Technology and Applications , Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049 , China
| | - Yandong Chen
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience & Beijing Key Laboratory of Ambient Particles Health Effects and Prevention Techniques , National Center for Nanoscience and Technology of China and University of Chinese Academy of Sciences , Beijing 100190 , China
| | - Bin Hu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience & Beijing Key Laboratory of Ambient Particles Health Effects and Prevention Techniques , National Center for Nanoscience and Technology of China and University of Chinese Academy of Sciences , Beijing 100190 , China
| | - Yiye Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience & Beijing Key Laboratory of Ambient Particles Health Effects and Prevention Techniques , National Center for Nanoscience and Technology of China and University of Chinese Academy of Sciences , Beijing 100190 , China
| | - Rujin Huang
- Key Lab of Aerosol Chemistry & Physics , Institute of Earth Environment, Chinese Academy of Sciences , Xi'an 710061 , China
| | - Junji Cao
- Key Lab of Aerosol Chemistry & Physics , Institute of Earth Environment, Chinese Academy of Sciences , Xi'an 710061 , China
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience & Beijing Key Laboratory of Ambient Particles Health Effects and Prevention Techniques , National Center for Nanoscience and Technology of China and University of Chinese Academy of Sciences , Beijing 100190 , China
| | - Marianne Geiser
- Institute of Anatomy , University of Bern , 3012 Bern , Switzerland
| | - Qing Miao
- Divisions of Pediatric Surgery and Pediatric Pathology, Departments of Surgery and Pathology, Children's Research Institute , Medical College of Wisconsin , Milwaukee , Wisconsin 53226 , United States
| | - Ying Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience & Beijing Key Laboratory of Ambient Particles Health Effects and Prevention Techniques , National Center for Nanoscience and Technology of China and University of Chinese Academy of Sciences , Beijing 100190 , China
| | - Chunying Chen
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience & Beijing Key Laboratory of Ambient Particles Health Effects and Prevention Techniques , National Center for Nanoscience and Technology of China and University of Chinese Academy of Sciences , Beijing 100190 , China
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21
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Laskin DL, Malaviya R, Laskin JD. Role of Macrophages in Acute Lung Injury and Chronic Fibrosis Induced by Pulmonary Toxicants. Toxicol Sci 2019; 168:287-301. [PMID: 30590802 PMCID: PMC6432864 DOI: 10.1093/toxsci/kfy309] [Citation(s) in RCA: 153] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
A diverse group of toxicants has been identified that cause injury to the lung including gases (eg, ozone, chlorine), particulates/aerosols (eg, diesel exhaust, fly ash, other combustion products, mustards, nanomaterials, silica, asbestos), chemotherapeutics (eg, bleomycin), and radiation. The pathologic response to these toxicants depends on the dose and duration of exposure and their physical/chemical properties. A common response to pulmonary toxicant exposure is an accumulation of proinflammatory/cytotoxic M1 macrophages at sites of tissue injury, followed by the appearance of anti-inflammatory/wound repair M2 macrophages. It is thought that the outcome of the pathogenic responses to toxicants depends on the balance in the activity of these macrophage subpopulations. Overactivation of either M1 or M2 macrophages leads to injury and disease pathogenesis. Thus, the very same macrophage-derived mediators, released in controlled amounts to destroy injurious materials and pathogens (eg, reactive oxygen species, reactive nitrogen species, proteases, tumor necrosis factor α) and initiate wound repair (eg, transforming growth factor β, connective tissue growth factor, vascular endothelial growth factor), can exacerbate acute lung injury and/or induce chronic disease such as fibrosis, chronic obstructive pulmonary disease, and asthma, when released in excess. This review focuses on the role of macrophage subsets in acute lung injury and chronic fibrosis. Understanding how these pathologies develop following exposure to toxicants, and the contribution of resident and inflammatory macrophages to disease pathogenesis may lead to the development of novel approaches for treating lung diseases.
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Affiliation(s)
- Debra L Laskin
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy
| | - Rama Malaviya
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy
| | - Jeffrey D Laskin
- Department of Environmental and Occupational Health, School of Public Health, Rutgers University, Piscataway, New Jersey
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22
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He M, Ichinose T, Yoshida S, Nishikawa M, Sun G, Shibamoto T. Role of iron and oxidative stress in the exacerbation of allergic inflammation in murine lungs caused by urban particulate matter <2.5 μm and desert dust. J Appl Toxicol 2019; 39:855-867. [PMID: 30698282 DOI: 10.1002/jat.3773] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 12/19/2018] [Indexed: 01/13/2023]
Abstract
Simultaneous exposure of lipopolysaccharide (LPS) and urban particulate matter <2.5 μm (PM2.5) or desert dust exacerbated murine asthma. In the present study, the role of iron (Fe) contained in particles and oxidative stress was investigated using Fe chelator deferoxamine (DFO) and oxidative stress scavenger N-acetylcysteine (NAC) in a murine asthma model exacerbated by LPS + PM2.5 or LPS + Asian sand dust (ASD). When BALB/c mice were intratracheally challenged with ovalbumin (OVA) + LPS and either urban PM2.5 or ASD, LPS + PM2.5 and LPS + ASD caused exacerbation of OVA-induced lung eosinophilia along with T-helper 2 cytokine and eosinophil-relevant chemokine production in bronchoalveolar lavage fluid as well as the production of OVA-specific IgE in serum. LPS + PM2.5 with NAC tended to reduce the lung eosinophilia compared to the LPS + PM2.5 host, whereas LPS + PM2.5 with DFO did not reduce them. LPS + ASD with NAC moderately reduced the lung eosinophilia compared to the LPS + ASD host. LPS + ASD with DFO drastically reduced the lung eosinophilia compared to the LPS + ASD host. The concentration of Fe in urban PM2.5 and ASD were almost the same. However, the concentrations of trace metals Pb, Cu, As, Ni, Cr, Mo, Sb, Co, Se and Cd were greater in PM2.5 than in ASD. These results suggested that Fe and oxidative stress are at least partly involved in lung eosinophilia exacerbation caused by LPS + ASD. However, trace metals (except Fe) might also be involved in lung eosinophilia exacerbated by LPS + PM2.5.
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Affiliation(s)
- Miao He
- Key Laboratory of Environmental Health Damage Research and Assessment, Liaoning Province; Department of Environmental Health, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Takamichi Ichinose
- Department of Health Sciences, Oita University of Nursing and Health Sciences, Oita, 870-1201, Japan
| | - Seiichi Yoshida
- Department of Health Sciences, Oita University of Nursing and Health Sciences, Oita, 870-1201, Japan
| | - Masataka Nishikawa
- Environmental Chemistry Division, National Institute for Environmental Studies, Ibaraki, 305-8506, Japan
| | - Guifan Sun
- Key Laboratory of Environmental Health Damage Research and Assessment, Liaoning Province; Department of Environmental Health, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Takayuki Shibamoto
- Department of Environmental Toxicology, University of California, Davis, CA, 95616, USA
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Wei T, Tang M. Biological effects of airborne fine particulate matter (PM 2.5) exposure on pulmonary immune system. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 60:195-201. [PMID: 29734103 DOI: 10.1016/j.etap.2018.04.004] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 04/02/2018] [Accepted: 04/03/2018] [Indexed: 05/21/2023]
Abstract
Airborne fine particulate matter (PM2.5) attracts more and more attention due to its environmental effects. The immune system appears to be a most sensitive target organ for the environmental pollutants. Inhaled PM2.5 can deposit in different compartments in the respiratory tract and interact with epithelial cells and resident immune cells. Exposed to PM2.5 can induce local or systematic inflammatory responses. This review focus on the effects of respiratory tract exposed to PM2.5. Firstly, we introduced the major emission sources, basic characteristics of PM2.5 and discussed its immunoadjuvant potential. Secondly, we elaborated the immune cells in the respiratory tract and the deposition of PM2.5 regarding the structural characteristics of the respiratory tract. Furthermore, we summarized the in vivo/vitro studies that revealed the immunotoxic effects of PM2.5 exposure to pulmonary cellular effectors and explored the contribution of PM2.5 exposure to the Th1/Th2 balance.
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Affiliation(s)
- Tingting Wei
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health, & Collaborative Innovation Center of Suzhou Nano Science and Technology, Southeast University, Nanjing 210009, PR China; Jiangsu key Laboratory for Biomaterials and Devices, Southeast University, Nanjing 210009, PR China
| | - Meng Tang
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health, & Collaborative Innovation Center of Suzhou Nano Science and Technology, Southeast University, Nanjing 210009, PR China; Jiangsu key Laboratory for Biomaterials and Devices, Southeast University, Nanjing 210009, PR China.
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Miyake T, Wang D, Matsuoka H, Morita K, Yasuda H, Yatera K, Kanazawa T, Yoshida Y. Endocytosis of particulate matter induces cytokine production by neutrophil via Toll-like receptor 4. Int Immunopharmacol 2018. [DOI: 10.1016/j.intimp.2018.02.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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25
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TLR2 Regulates Allergic Airway Inflammation and Autophagy Through PI3K/Akt Signaling Pathway. Inflammation 2018; 40:1382-1392. [PMID: 28493079 DOI: 10.1007/s10753-017-0581-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Toll-like receptors (TLRs) are innate pattern recognition receptors that play a critical role in allergic inflammation, yet their contribution to autophagy in asthma remains poorly defined. Here, we investigate the role of Toll-like receptor 2 (TLR2) in phosphoinositide 3-kinases/protein kinase B (PI3K/Akt) pathway-mediated autophagy in ovalbumin-induced airway inflammation in mice. Wild-type (WT) and TLR2-knockout (TLR2-/-) C57BL/6 mice were ovalbumin-sensitized and ovalbumin-challenged. In ovalbumin-challenged WT mice, enhanced expression of TLR2 in lung tissue, remarkable inflammatory cell infiltrates, goblet cell hyperplasia, and increased mucus production were observed. The number of inflammatory cells and interleukin-13 (IL-13) levels increased, while interferon-gamma (IFN-γ) levels decreased in bronchoalveolar lavage fluid. Expression of PI3K, phospho-Akt, Beclin-1 and LC3-II was enhanced significantly. These changes were mitigated dose-dependently in 3-methyl adenine-treated mice. In contrast, similar but weaker changes were found in ovalbumin-challenged TLR2-/- mice, and the changes were not significantly attenuated by 3-methyl adenine treatment. These results indicate that TLR2 confers a pivotal role in allergic airway inflammation via regulating the PI3K/Akt signaling pathway-related autophagy in mice.
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He M, Ichinose T, Yoshida Y, Arashidani K, Yoshida S, Takano H, Sun G, Shibamoto T. Urban PM2.5 exacerbates allergic inflammation in the murine lung via a TLR2/TLR4/MyD88-signaling pathway. Sci Rep 2017; 7:11027. [PMID: 28887522 PMCID: PMC5591243 DOI: 10.1038/s41598-017-11471-y] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 08/25/2017] [Indexed: 12/22/2022] Open
Abstract
Nevertheless its mechanism has not been well explained yet, PM2.5 is recognized to exacerbate asthma. In the present study, the roles of toll-like receptor (TLR) 2, TLR4 and MyD88, in exacerbation of allergen-induced lung eosinophilia caused by urban PM2.5 was investigated. TLR2-, TLR4-, MyD88-deficient and WT BALB/c mice were intratracheally challenged with PM2.5 +/− ovalbumin (OVA) four times at 2-week intervals. PM2.5 increased neutrophil numbers and KC in bronchoalveolar lavage fluid and caused slight peribronchiolar inflammation in WT mice. However, these changes were attenuated, but not completely suppressed in gene-deficient mice, especially in MyD88−/− mice. In WT mice, PM2.5 + OVA exacerbated OVA-related lung eosinophilia. This exacerbation includes increase of IL-5, IL-13, eotaxin and MCP-3; infiltration of eosinophils into the airway submucosa; proliferation of goblet cells in the airway epithelium; and the production of antigen-specific IgE and IgG1 in serum. All these effects were stronger in TLR2−/− mice than in TLR4−/− mice. In MyD88−/− mice, this pro-inflammatory mediator-inducing ability was considerably weak and lung pathology was negligible. These results suggest that urban PM2.5 may exacerbate allergic inflammation in the murine lung via a TLR2/TLR4/MyD88-signaling pathway. PM2.5-bound trace microbial elements, such as lipopolysaccharide may be a strong candidate for exacerbation of murine lung eosinophilia.
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Affiliation(s)
- Miao He
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, 110122, China.
| | - Takamichi Ichinose
- Department of Health Sciences, Oita University of Nursing and Health Sciences, Oita, 870-1201, Japan.
| | - Yasuhiro Yoshida
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Fukuoka, 807-8555, Japan
| | - Keiichi Arashidani
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Fukuoka, 807-8555, Japan
| | - Seiichi Yoshida
- Department of Health Sciences, Oita University of Nursing and Health Sciences, Oita, 870-1201, Japan
| | - Hirohisa Takano
- Environmental Health Division, Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 615-8530, Japan
| | - Guifan Sun
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Takayuki Shibamoto
- Department of Environmental Toxicology, University of California, Davis, California, 95616, USA
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27
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He M, Ichinose T, Yoshida S, Ito T, He C, Yoshida Y, Arashidani K, Takano H, Sun G, Shibamoto T. PM2.5-induced lung inflammation in mice: Differences of inflammatory response in macrophages and type II alveolar cells. J Appl Toxicol 2017; 37:1203-1218. [DOI: 10.1002/jat.3482] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 03/13/2017] [Accepted: 03/30/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Miao He
- Department of Environmental Health, School of Public Health; China Medical University; Shenyang 110122 China
- Department of Health Sciences; Oita University of Nursing and Health Sciences; Oita 870-1201 Japan
| | - Takamichi Ichinose
- Department of Health Sciences; Oita University of Nursing and Health Sciences; Oita 870-1201 Japan
| | - Seiichi Yoshida
- Department of Health Sciences; Oita University of Nursing and Health Sciences; Oita 870-1201 Japan
| | - Tomohiro Ito
- Center for Health and Environmental Risk Research; National Institute for Environmental Studies; 16-2 Onogawa, Tsukuba Ibaraki 305-8506 Japan
| | - Cuiying He
- Department of Immunology and Parasitology, School of Medicine; University of Occupational and Environmental Health; Fukuoka 807-8555 Japan
| | - Yasuhiro Yoshida
- Department of Immunology and Parasitology, School of Medicine; University of Occupational and Environmental Health; Fukuoka 807-8555 Japan
| | - Keiichi Arashidani
- Department of Immunology and Parasitology, School of Medicine; University of Occupational and Environmental Health; Fukuoka 807-8555 Japan
| | - Hirohisa Takano
- Environmental Health Division, Department of Environmental Engineering, Graduate School of Engineering; Kyoto University; Kyoto 615-8530 Japan
| | - Guifan Sun
- Department of Environmental Health, School of Public Health; China Medical University; Shenyang 110122 China
| | - Takayuki Shibamoto
- Department of Environmental Toxicology; University of California; Davis CA 95616 USA
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Sebag SC, Koval OM, Paschke JD, Winters CJ, Jaffer OA, Dworski R, Sutterwala FS, Anderson ME, Grumbach IM. Mitochondrial CaMKII inhibition in airway epithelium protects against allergic asthma. JCI Insight 2017; 2:e88297. [PMID: 28194433 DOI: 10.1172/jci.insight.88297] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Excessive ROS promote allergic asthma, a condition characterized by airway inflammation, eosinophilic inflammation, and increased airway hyperreactivity (AHR). The mechanisms by which airway ROS are increased and the relationship between increased airway ROS and disease phenotypes are incompletely defined. Mitochondria are an important source of cellular ROS production, and our group discovered that Ca2+/calmodulin-dependent protein kinase II (CaMKII) is present in mitochondria and activated by oxidation. Furthermore, mitochondrial-targeted antioxidant therapy reduced the severity of allergic asthma in a mouse model. Based on these findings, we developed a mouse model of CaMKII inhibition targeted to mitochondria in airway epithelium. We challenged these mice with OVA or Aspergillus fumigatus. Mitochondrial CaMKII inhibition abrogated AHR, inflammation, and eosinophilia following OVA and A. fumigatus challenge. Mitochondrial ROS were decreased after agonist stimulation in the presence of mitochondrial CaMKII inhibition. This correlated with blunted induction of NF-κB, the NLRP3 inflammasome, and eosinophilia in transgenic mice. These findings demonstrate a pivotal role for mitochondrial CaMKII in airway epithelium in mitochondrial ROS generation, eosinophilic inflammation, and AHR, providing insights into how mitochondrial ROS mediate features of allergic asthma.
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Affiliation(s)
- Sara C Sebag
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Olha M Koval
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA.,Veterans Affairs Healthcare System, Iowa City, Iowa, USA
| | - John D Paschke
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
| | | | - Omar A Jaffer
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Ryszard Dworski
- Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University, Nashville, Tennessee, USA
| | - Fayyaz S Sutterwala
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA.,Veterans Affairs Healthcare System, Iowa City, Iowa, USA.,Inflammation Program, University of Iowa, Iowa City, Iowa, USA.,Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Mark E Anderson
- Department of Medicine and.,Department of Physiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Isabella M Grumbach
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA.,Veterans Affairs Healthcare System, Iowa City, Iowa, USA
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He M, Ichinose T, Yoshida S, Shiba F, Arashidani K, Takano H, Sun G, Shibamoto T. Differences in allergic inflammatory responses in murine lungs: comparison of PM2.5 and coarse PM collected during the hazy events in a Chinese city. Inhal Toxicol 2016; 28:706-718. [PMID: 27919164 DOI: 10.1080/08958378.2016.1260185] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Urban particulate matter (PM) is associated with an increase in asthma. PM2.5 (<PM2.5 μm) and coarse PM (CPM: PM2.5-PM10 μm) were collected from the air in a Chinese city during haze events. The amounts of polycyclic aromatic hydrocarbons (PAHs) were higher in PM2.5 than in CPM. Conversely, microbial elements LPS and β-glucan were much higher in CPM than in PM2.5. Concentrations of Si, Al, Fe, and Ti in CPM were greater than in PM2.5, while Pb, Cu and As concentrations were lower than in PM2.5. When RAW264.7 cells were treated with PM2.5 and CPM, the pro-inflammatory response in the cells was associated with the microbial element levels and attenuated partly by both polymyxin B (PMB) and N-acetylcystein (NAC). The expression of the oxidative stress response gene heme oxygenase1 was associated with PAHs levels. The exacerbating effects of the two-types of PM on murine lung eosinophilia were compared to clarify the role of toxic materials. When BALB/c mice were intratracheally instilled with PM2.5 or CPM (total 0.4 mg) + ovalbumin (OVA), both exacerbated lung eosinophilia along with allergy-relevant biological indicators, such as OVA-specific IgE in serum; enhancement of lung pathology when compared with counterpart samples without OVA. The exacerbating effects were greater in microbial element-rich CPM than in organic chemical-rich PM2.5. These results indicate that microbial elements have more potently exacerbating effects on the development of lung eosinophilia than do organic chemicals. In addition, oxidative stress and transition metals might be associated with the exacerbation of this negative effect.
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Affiliation(s)
- Miao He
- a School of Public Health, China Medical University , Shenyang , China.,b Department of Health Sciences , Oita University of Nursing and Health Sciences , Oita , Japan
| | - Takamichi Ichinose
- b Department of Health Sciences , Oita University of Nursing and Health Sciences , Oita , Japan
| | - Seiichi Yoshida
- b Department of Health Sciences , Oita University of Nursing and Health Sciences , Oita , Japan
| | - Fumiko Shiba
- b Department of Health Sciences , Oita University of Nursing and Health Sciences , Oita , Japan
| | - Keiichi Arashidani
- c Department of Immunology and Parasitology , School of Medicine, University of Occupational and Environmental Health , Fukuoka , Japan
| | - Hirohisa Takano
- d Environmental Health Division, Department of Environmental Engineering, Graduate School of Engineering, Kyoto University , Kyoto , Japan , and
| | - Guifan Sun
- a School of Public Health, China Medical University , Shenyang , China
| | - Takayuki Shibamoto
- e Department of Environmental Toxicology , University of California , Davis , CA , USA
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Sadakane K, Ichinose T, Nishikawa M, Takano H, Shibamoto T. Co-exposure to zymosan A and heat-inactivated Asian sand dust exacerbates ovalbumin-induced murine lung eosinophilia. Allergy Asthma Clin Immunol 2016; 12:48. [PMID: 27766108 PMCID: PMC5057426 DOI: 10.1186/s13223-016-0153-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 09/20/2016] [Indexed: 01/19/2023] Open
Abstract
Background Epidemiological studies have implicated Asian sand dust (ASD) in the increased prevalence of respiratory disorders, including asthma. It has been observed that fungal elements such as β-glucan can be adsorbed onto ASD. In the present study, the exacerbating effect of the combined exposure to zymosan A (ZymA) containing yeast β-glucan and heat-inactivated ASD on ovalbumin (OVA)-induced murine lung eosinophilia was investigated. Methods BALB/c mice were repeatedly instilled intratracheally with one of eight immunogenic formulations consisting of various combinations of (1) ZymA, (2) ASD that was briefly heated to remove organic substances (H-ASD), and (3) OVA in normal saline, or each of the above alone. Pathologic changes, cytological alterations in bronchoalveolar lavage fluid (BALF), changes in inflammatory cytokines and chemokines in BALF, and OVA-specific IgE and IgG1 antibodies in serum were investigated. Results Exposure to ZymA with or without OVA had no effect on most indicators of lung inflammation. Exposure to H-ASD with OVA increased the recruitment of inflammatory cells to the lungs and the serum levels of OVA-specific IgE and IgG1. The combination OVA + ZymA + H-ASD induced a marked recruitment of eosinophils and upregulation of T helper 2 (Th2) cytokines (interleukin [IL]-4 and IL-13), IL-6, eotaxin/CCL11, and monocyte chemotactic protein (MCP)-3/CCL7 in BALF and OVA-specific IgE in serum. This treatment also induced the most severe pathological changes in the lungs of mice. ZymA was found to boost the effects of H-ASD, thereby exacerbating the OVA-induced allergic inflammation, even though ZymA alone did not have such effect. Conclusions The results suggest that fungal elements such as β-1,3-glucan aggravate the allergic inflammation caused by ASD. Our findings may facilitate prophylaxis of some allergic diseases in Asia.
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Affiliation(s)
- Kaori Sadakane
- Department of Health Sciences, Oita University of Nursing and Health Sciences, Oita, 870-1201 Japan
| | - Takamichi Ichinose
- Department of Health Sciences, Oita University of Nursing and Health Sciences, Oita, 870-1201 Japan
| | - Masataka Nishikawa
- Environmental Chemistry Division, National Institute for Environmental Studies, Tsukuba, Ibaraki 305-8506 Japan
| | - Hirohisa Takano
- Environmental Health Division, Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 615-8530 Japan
| | - Takayuki Shibamoto
- Department of Environmental Toxicology, University of California, Davis, CA 95616 USA
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31
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He M, Ichinose T, Kobayashi M, Arashidani K, Yoshida S, Nishikawa M, Takano H, Sun G, Shibamoto T. Differences in allergic inflammatory responses between urban PM2.5 and fine particle derived from desert-dust in murine lungs. Toxicol Appl Pharmacol 2016; 297:41-55. [PMID: 26917405 DOI: 10.1016/j.taap.2016.02.017] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Revised: 02/17/2016] [Accepted: 02/19/2016] [Indexed: 01/28/2023]
Abstract
The biological and chemical natures of materials adsorbed onto fine particulate matter (PM2.5) vary by origin and passage routes. The exacerbating effects of the two samples-urban PM2.5 (U-PM2.5) collected during the hazy weather in a Chinese city and fine particles (ASD-PM2.5) collected during Asian sand dust (ASD) storm event days in Japan-on murine lung eosinophilia were compared to clarify the role of toxic materials in PM2.5. The amounts of β-glucan and mineral components were higher in ASD-PM2.5 than in U-PM2.5. On the other hand, organic chemicals, including polycyclic aromatic hydrocarbons (PAHs), were higher in U-PM2.5 than in ASD-PM2.5. When BALB/c mice were intratracheally instilled with U-PM2.5 and ASD-PM2.5 (total 0.4 mg/mouse) with or without ovalbumin (OVA), various biological effects were observed, including enhancement of eosinophil recruitment induced by OVA in the submucosa of the airway, goblet cell proliferation in the bronchial epithelium, synergic increase of OVA-induced eosinophil-relevant cytokines and a chemokine in bronchoalveolar lavage fluid, and increase of serum OVA-specific IgG1 and IgE. Data demonstrate that U-PM2.5 and ASD-PM2.5 induced allergic inflammatory changes and caused lung pathology. U-PM2.5 and ASD-PM2.5 increased F4/80(+) CD11b(+) cells, indicating that an influx of inflammatory and exudative macrophages in lung tissue had occurred. The ratio of CD206 positive F4/80(+) CD11b(+) cells (M2 macrophages) in lung tissue was higher in the OVA+ASD-PM2.5 treated mice than in the OVA+U-PM2.5 treated mice. These results suggest that the lung eosinophilia exacerbated by both PM2.5 is due to activation of a Th2-associated immune response along with induced M2 macrophages and the exacerbating effect is greater in microbial element (β-glucan)-rich ASD-PM2.5 than in organic chemical-rich U-PM2.5.
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Affiliation(s)
- Miao He
- Environment and Non-communicable Disease Research Center, School of Public Health, China Medical University, Shenyang 110122, China; Department of Health Sciences, Oita University of Nursing and Health Sciences, Oita 870-1201, Japan.
| | - Takamichi Ichinose
- Department of Health Sciences, Oita University of Nursing and Health Sciences, Oita 870-1201, Japan.
| | - Makoto Kobayashi
- Department of Respiratory Medicine, Kanazawa Medical University, Ishikawa 920-0293, Japan
| | - Keiichi Arashidani
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Fukuoka 807-8555, Japan
| | - Seiichi Yoshida
- Department of Health Sciences, Oita University of Nursing and Health Sciences, Oita 870-1201, Japan
| | - Masataka Nishikawa
- Environmental Chemistry Division, National Institute for Environmental Studies, Ibaraki 305-8506, Japan
| | - Hirohisa Takano
- Environmental Health Division, Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8530, Japan
| | - Guifan Sun
- Environment and Non-communicable Disease Research Center, School of Public Health, China Medical University, Shenyang 110122, China
| | - Takayuki Shibamoto
- Department of Environmental Toxicology, University of California, Davis, CA 95616, USA
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