Motorcycle exhaust particles augment antigen-induced airway inflammation in BALB/c mice

Chen Chen Lee, Yu Wen Cheng, Jiunn Wang Liao, Bor Luen Chiang, Yih Loong Lai, Jaw Jou Kang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Evidence indicates that environment pollutants from fossil fuel combustion compromise the immune system by enhancing allergic reactions and damaging the respiratory tract. This study was performed to investigate the effects of motorcycle exhaust particles (MEP), a major air pollutant especially in the urban areas of Taiwan, on allergen-induced airway inflammatory reactions in lab animals. BALB/c mice were intratracheally instilled with ovalbumin (OVA), MEP, or phosphate-buffered saline, 3 times every 2 wk. Airway hyperresponsiveness was measured in unrestrained mice by barometric plethsmography. Bronchoalveolar lavage fluid (BALF) and serum from treated animals were collected for cytokine and antibody determination by enzyme-linked immunosorbent assay (ELISA). Lung tissue stained with hematoxylin/eosin was examined. Data showed that MEP augmented OVA-induced airway inflammation; characterized by infiltration of eosinophils and neutrophils in BALF and lung tissue inflammation. The combination of OVA and MEP markedly increased interleukin-4 (IL-4), interleukin-5 (IL-5), and tumor necrosis factor-α (TNF-α) protein levels in BALF. In addition, MEP also augmented OVA-induced rise in OVA-specific immunoglobulin (Ig) G1 and IgE and airway hyperresponsiveness. Pretreated lavage cells with mitogen-activated protein kinase (MAPK) inhibitors showed that TNF-α release was significantly inhibited. This study found that MEP augmented antigen-induced allergic airway inflammation and airway hyperresponsiveness through a Th2-dominant pathway.

Original languageEnglish
Pages (from-to)405-412
Number of pages8
JournalJournal of Toxicology and Environmental Health - Part A
Volume71
Issue number6
DOIs
Publication statusPublished - Jan 2008

Fingerprint

Motorcycles
Ovalbumin
Inflammation
Antigens
Bronchoalveolar Lavage Fluid
Fluids
Animals
Tumor Necrosis Factor-alpha
Tissue
Fossil Fuels
Air Pollutants
Immunosorbents
Neutrophil Infiltration
Immune system
Therapeutic Irrigation
Interleukin-5
Hematoxylin
Protein Kinase Inhibitors
Eosine Yellowish-(YS)
Mitogen-Activated Protein Kinases

ASJC Scopus subject areas

  • Toxicology
  • Health, Toxicology and Mutagenesis

Cite this

Motorcycle exhaust particles augment antigen-induced airway inflammation in BALB/c mice. / Lee, Chen Chen; Cheng, Yu Wen; Liao, Jiunn Wang; Chiang, Bor Luen; Lai, Yih Loong; Kang, Jaw Jou.

In: Journal of Toxicology and Environmental Health - Part A, Vol. 71, No. 6, 01.2008, p. 405-412.

Research output: Contribution to journalArticle

Lee, Chen Chen ; Cheng, Yu Wen ; Liao, Jiunn Wang ; Chiang, Bor Luen ; Lai, Yih Loong ; Kang, Jaw Jou. / Motorcycle exhaust particles augment antigen-induced airway inflammation in BALB/c mice. In: Journal of Toxicology and Environmental Health - Part A. 2008 ; Vol. 71, No. 6. pp. 405-412.
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