Cited by 124Chronic Obstructive Pulmonary Disease (COPD) ResearchNeutrophil, Myeloperoxidase and Oxidative MechanismsNF-κB Signaling Pathways

Superoxide Mediates Cigarette Smoke-Induced Infiltration of Neutrophils into the Airways through Nuclear Factor-κ B Activation and IL-8 mRNA Expression in Guinea Pigs In Vivo

Nishikawa, Masanori, Kakemizu, Nobumasa, Ito, Takaaki, Kudo, Makoto, Kaneko, Takeshi, Suzuki, Motoyoshi, Udaka, Naoko, Ikeda, Hirotada +1 more·1999·American Journal of Respiratory Cell and Molecular Biology

Abstract

We examined the hypothesis that superoxide mediates infiltration of neutrophils to the airways through nuclear factor (NF)-κB and interleukin-8 (IL-8) after acute exposure to cigarette smoke (CS) in vivo. Male Hartley strain guinea pigs were exposed to air or 20 puffs of CS and killed 5 h after the exposure. The differential cell count of bronchoalveolar lavage fluid and specific myeloperoxidase enzyme assay demonstrated that acute exposure to CS caused neutrophil accumulation to the airways and parenchyma, respectively. Acute exposure to CS increased DNA-binding activity of NF-κB in the lung. Acute exposure to CS also increased IL-8 messenger RNA (mRNA) expression in the lung. Pretreatment of guinea pigs with recombinant human superoxide dismutase (rhSOD) aerosols reduced the CS-induced neutrophil accumulation to the airways. Both activation of NF-κB and increased IL-8 mRNA expression were also inhibited by the pretreatment of rhSOD aerosols. Strong immunoreactivities for p65 and p50 were detected in the nuclei of alveolar macrophages after acute exposure to CS. The signal for IL-8 mRNA expression was demonstrated in the alveolar space after acute exposure to CS. Neither significant immunoreactivities for p65 and p50 nor IL-8 mRNA signals were observed in airway epithelium. These observations suggest that acute exposure to CS initiates superoxide-dependent mechanism that, through NF-κB activation and IL-8 mRNA expression, produces infiltration of neutrophils to the airways in vivo. It was also suggested that the alveolar macrophage is one potential source of NF-κB activation and IL-8 mRNA expression after acute exposure to CS.

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Crossref · 10.1165/ajrcmb.20.2.3305

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Authors
Nishikawa, M., Kakemizu, N., Ito, T., Kudo, M., Kaneko, T., Suzuki, M., Udaka, N., Ikeda, H., & Okubo, T.
Affiliations
Yokohama City University (JP)
Corresponding author
Nishikawa, Masanori
Venue
American Journal of Respiratory Cell and Molecular Biology
Published
1999-02-01
Volume
20
Issue
2
Pages
189-198
ISSN
  • 1044-1549 (ISSN-L)
  • 1535-4989
OpenAlex
W2066349836
Cited by
124
References
39
Citations by year
2025: 1 · 2024: 1 · 2023: 3 · 2022: 1 · 2021: 1 · 2018: 2 · 2017: 1 · 2016: 2 · 2015: 2 · 2012: 6
FWCI
10.86
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Respiratory Cell and Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Chronic Obstructive Pulmonary Disease (COPD) Research
  • Life Sciences › Immunology and Microbiology › Immunology › Neutrophil, Myeloperoxidase and Oxidative Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
Keywords
cigarette smoke, superoxide, neutrophil infiltration, respiratory tract, NF-κB activation, interleukin-8, superoxide dismutase, alveolar macrophages, acute lung injury, bronchoalveolar lavage, oxidative stress
MeSH terms
Animals, Base Sequence, Cell Movement, Guinea Pigs, Immunohistochemistry, Male, Molecular Sequence Data, Neutrophils, Recombinant Proteins, RNA, Messenger, Smoke, Superoxides, Superoxide Dismutase, Trachea, Interleukin-8, NF-kappa B, Reverse Transcriptase Polymerase Chain Reaction

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