Similar cellular effects induced by diesel exhaust particles from a representative diesel vehicle recovered from filters and Standard Reference Material 1650

被引:21
作者
Boland, S
Baeza-Squiban, A
Bonvallot, V
Houcine, O
Pain, C
Meyer, M
Marano, F
机构
[1] Univ Paris 07, Lab Cytophysiol & Toxicol Cellulaire, F-75251 Paris 05, France
[2] Technoctr Renault, Serv 64120, F-78288 Guyancourt, France
关键词
16; HBE; air pollution; inflammation; cytotoxicity; phagocytosis; catalyst;
D O I
10.1016/S0887-2333(01)00040-6
中图分类号
R99 [毒物学(毒理学)];
学科分类号
100405 ;
摘要
Standard reference diesel exhaust particles (DEP) SRM 1650 are often used to evaluate the toxicity of DEP. However, these particles did not necessarily reflect the effects of DEP representative of present diesel automobiles. This study was designed to compare the effects of SRM 1650 to DEP from representative cars (RC-DEP) on airway epithelial cells. Therefore we established a method to recover RC-DEP impacted on filters after emission from diesel automobiles on test beds. Electron microscopy and flow cytometry showed that these two types of particles were phagocytosed to the same extent by epithelial cells. This phagocytosis is not dependent on the adsorbed organic compounds in contrast to the cytotoxic effect evaluated by measurements of LDH release. This is emphasized by the fact that RC-DEP equipped with an oxidation catalyst are less cytotoxic than particles from a non-equipped vehicle or SRM 1650. This type of catalyst also reduces significantly the release of GM-CSF by bronchial epithelial cells. We have shown in the present paper that SRM 1650 may be used as a surrogate of DEP. However, exhaust gas post-treatment devices of current diesel automobiles reduce the cytotoxicity as well as the inflammatory response of these particles. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:379 / 385
页数:7
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