Alteration of alveolar macrophage chemotaxis, cell adhesion, and cell adhesion molecules following ozone exposure of rats

Journal of Cellular Physiology
D K Bhalla

Abstract

Ozone (O3) exposure of humans and animals induces an inflammatory response in the lung, which is associated with macrophage stimulation, release of chemotactic agents, and recruitment of polymorphonuclear leukocytes (PMNs). This study was designed to investigate the functional aspects of the macrophages that impact inflammatory processes in the lung. Macrophages recovered by bronchoalveolar lavage (BAL) from rats exposed to purified air or 0.8 ppm O3 were studied for their chemotactic activity, adhesive interactions with alveolar epithelial cells in culture, surface morphology, and surface expression of cell adhesion molecules. The macrophages isolated from O3-exposed rats exhibited a greater motility in response to a chemotactic stimulus than the macrophages isolated from rats exposed to purified air. The macrophages from O3-exposed animals also displayed greater adhesion when placed in culture with epithelial cells isolated from adult rat lung (ARL-14) than the macrophages from control rats. Both chemotactic motility and cell adhesion stimulated by O3 exposure were attenuated when the macrophages were incubated in the presence of monoclonal antibodies to leukocyte adhesion molecules, CD11b, or epithelial cell adhesion molecul...Continue Reading

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Citations

Mar 30, 2004·Toxicology in Vitro : an International Journal Published in Association with BIBRA·D KlestadtJ Falla
Jul 31, 2003·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·L NikasinovicN Seta
Jan 2, 2009·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·Deepak K BhallaC Gary Gairola
Jan 15, 2005·Toxicology in Vitro : an International Journal Published in Association with BIBRA·Deborah KlestadtJaïro Falla

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