Acrolein-induced cell death in human alveolar macrophages

被引:64
作者
Li, L
Hamilton, RF
Taylor, DE
Holian, A
机构
[1] Div. of Pulmon. and Critical Care M., Department of Internal Medicine, Univ. of Texas Houston Hlth. Science, Houston
关键词
D O I
10.1006/taap.1997.8189
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
Acrolein is an environmental air pollutant that is known to suppress respiratory host defense against infections. The mechanism of the decrease in host defense is not yet clear. In this study, the effects of acrolein on human alveolar macrophages and their function were examined. Acrolein caused dose-dependent cytotoxicity to alveolar macrophages as demonstrated by the induction of apoptosis and necrosis, In addition, at lower doses, acrolein caused induction of heme oxygenase 1 protein; however, stress protein 72 (SP72) was not induced. These findings demonstrated that acrolein caused a dose-dependent selective induction of a stress response, apoptosis, and necrosis in human alveolar macrophages. Macrophage function was assessed by release of cytokines in response to endotoxin stimulation. Acrolein caused a dose-dependent inhibition of release of IL-1 beta, TNF-alpha, and IL-12. The inhibition of cytokine release and cytotoxicity to alveolar macrophages may in part be responsible for acrolein-induced immuno-suppression of the lung. (C) 1997 Academic Press.
引用
收藏
页码:331 / 339
页数:9
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