Urban Aerosols Induce Pro-inflammatory Cytokine Production in Macrophages and Cause Airway Inflammation in Vivo

  • Yoshida Tokuyuki
    Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio)
  • Yoshioka Yasuo
    Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio) The Center for Advanced Medical Engineering and Informatics, Osaka University
  • Fujimura Maho
    Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio)
  • Kayamuro Hiroyuki
    Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio)
  • Yamashita Kohei
    Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio)
  • Higashisaka Kazuma
    Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio)
  • Nakanishi Ryosuke
    Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio)
  • Morishita Yuki
    Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio)
  • Nabeshi Hiromi
    Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio)
  • Yamashita Takuya
    Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio)
  • Muroi Masashi
    Research Institute of Pharmaceutical Sciences, Musashino University
  • Tanamoto Kenichi
    Research Institute of Pharmaceutical Sciences, Musashino University
  • Nagano Kazuya
    Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio)
  • Abe Yasuhiro
    Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio)
  • Kamada Haruhiko
    Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio) The Center for Advanced Medical Engineering and Informatics, Osaka University
  • Kawai Yuichi
    Graduate School of Pharmaceutical Sciences, Kobe-Gakuin University
  • Mayumi Tadanori
    Graduate School of Pharmaceutical Sciences, Kobe-Gakuin University
  • Itoh Norio
    Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University
  • Yoshikawa Tomoaki
    Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio)
  • Tsunoda Shinichi
    Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio) The Center for Advanced Medical Engineering and Informatics, Osaka University
  • Tsutsumi Yasuo
    Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation (NiBio) The Center for Advanced Medical Engineering and Informatics, Osaka University

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Urban air pollution, especially in developing countries, is a crucial environmental problem. Urban aerosols may contain various kinds of substances and induce harmful effects such as allergic diseases. Therefore, it is critical to clarify the biological effects of urban aerosols on human health. In this study, we evaluated the induction of airway inflammation in vitro and in vivo due to exposure of urban aerosols. We investigated cytokine production and nuclear factor-κB (NF-κB) activation after stimulation of macrophage cells by exposure of urban aerosols. Urban aerosols were found to induce the production of interleukin (IL)-8, tumor necrosis factor-α and IL-1β on macrophage cells. In addition, we showed that NF-κB pathway regulated the urban aerosols-induced inflammatory cytokine response. Moreover, the intranasal administration of urban aerosols resulted in increases in the total cell number in bronchoalveolar lavage and infiltration of eosinophils in lung tissue. These results indicate that urban aerosols induce respiratory inflammation and onset of inflammatory disease due to an activation of the immune system.

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