PT Journal AU Sandstrom, T Stjernberg, N Andersson, MC Kolmodin-Hedman, B Lindstrom, K Rosenhall, L TI Cell response in bronchoalveolar lavage fluid after sulfur dioxide exposure. SO Scandinavian Journal of Work, Environment & Health PD 4VL PY 1989 BP 142 EP 146 IS 2 DI 10.5271/sjweh.1870 WP https://www.sjweh.fi/show_abstract.php?abstract_id=1870 SN 0355-3140 AB

Environmental chamber exposure and bronchoalveolar lavage (BAL) were used to study the dose-response relationship between short-term exposure to sulfur dioxide (SO2) and inflammatory reactions in the human lung as reflected in BAL fluid. Healthy subjects were exposed to 10, 13, 20, or 30 mg/m3 for 20 min. BAL was performed several weeks preexposure and 24 h postexposure. Mast cells, lymphocytes, lysozyme positive macrophages, and the total number of macrophages were significantly increased after SO2 exposure. A dose-dependent increase in the cell response in BAL fluid was observed after exposure to 10-20 mg/m3, but no further increase was detected after 30 mg/m3. Inflammatory cell response was found in BAL fluid at SO2 levels that occur in industrial indoor environments worldwide, and cell response to SO2 was also seen below the short-term exposure limit of Sweden and many other countries (13 mg/m3).

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