PMID- 19800902 OWN - NLM STAT- MEDLINE DCOM- 20091230 LR - 20161125 IS - 1096-0333 (Electronic) IS - 0041-008X (Linking) VI - 242 IP - 1 DP - 2010 Jan 1 TI - Chlorobenzene induces oxidative stress in human lung epithelial cells in vitro. PG - 100-8 LID - 10.1016/j.taap.2009.09.020 [doi] AB - Chlorobenzene is a volatile organic compound (VOC) that is widely used as a solvent, degreasing agent and chemical intermediate in many industrial settings. Occupational studies have shown that acute and chronic exposure to chlorobenzene can cause irritation of the mucosa of the upper respiratory tract and eyes. Using in vitro assays, we have shown in a previous study that human bronchial epithelial cells release inflammatory mediators such as the cytokine monocyte chemoattractant protein-1 (MCP-1) in response to chlorobenzene. This response is mediated through the NF-kappaB signaling pathway. Here, we investigated the effects of monochlorobenzene on human lung cells, with emphasis on potential alterations of the redox equilibrium to clarify whether the chlorobenzene-induced inflammatory response in lung epithelial cells is caused via an oxidative stress-dependent mechanism. We found that expression of cellular markers for oxidative stress, such as heme oxygenase 1 (HO-1), glutathione S-transferase pi1 (GSTP1), superoxide dismutase 1 (SOD1), prostaglandin-endoperoxide synthase 2 (PTGS2) and dual specificity phosphatase 1 (DUSP1), were elevated in the presence of monochlorobenzene. Likewise, intracellular reactive oxygen species (ROS) were increased in response to exposure. However, in the presence of the antioxidants N-(2-mercaptopropionyl)-glycine (MPG) or bucillamine, chlorobenzene-induced upregulation of marker proteins and release of the inflammatory mediator MCP-1 are suppressed. These results complement our previous findings and point to an oxidative stress-mediated inflammatory response following chlorobenzene exposure. FAU - Feltens, Ralph AU - Feltens R AD - UFZ- Helmholtz Centre for Environmental Research, Department of Environmental Immunology, Permoserstrasse 15, D-04318 Leipzig, Germany. ralph.feltens@ufz.de FAU - Mogel, Iljana AU - Mogel I FAU - Roder-Stolinski, Carmen AU - Roder-Stolinski C FAU - Simon, Jan-Christoph AU - Simon JC FAU - Herberth, Gunda AU - Herberth G FAU - Lehmann, Irina AU - Lehmann I LA - eng PT - Journal Article DEP - 20091002 PL - United States TA - Toxicol Appl Pharmacol JT - Toxicology and applied pharmacology JID - 0416575 RN - 0 (Antioxidants) RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Chlorobenzenes) RN - 0 (Reactive Oxygen Species) RN - EC 1.14.14.18 (Heme Oxygenase-1) RN - EC 2.5.1.18 (GSTP1 protein, human) RN - EC 2.5.1.18 (Glutathione S-Transferase pi) RN - GAN16C9B8O (Glutathione) RN - K18102WN1G (chlorobenzene) SB - IM MH - Antioxidants/pharmacology MH - Blotting, Western MH - Cell Line MH - Chemokine CCL2/biosynthesis/genetics MH - Chlorobenzenes/*toxicity MH - Epithelial Cells/*drug effects MH - Glutathione/metabolism MH - Glutathione S-Transferase pi/biosynthesis/genetics MH - Heme Oxygenase-1/biosynthesis/genetics MH - Humans MH - Lung/*cytology/drug effects MH - Oxidative Stress/*drug effects MH - Reactive Oxygen Species/metabolism MH - Reverse Transcriptase Polymerase Chain Reaction MH - Up-Regulation/drug effects EDAT- 2009/10/06 06:00 MHDA- 2009/12/31 06:00 CRDT- 2009/10/06 06:00 PHST- 2009/05/26 00:00 [received] PHST- 2009/09/11 00:00 [revised] PHST- 2009/09/28 00:00 [accepted] PHST- 2009/10/06 06:00 [entrez] PHST- 2009/10/06 06:00 [pubmed] PHST- 2009/12/31 06:00 [medline] AID - S0041-008X(09)00412-8 [pii] AID - 10.1016/j.taap.2009.09.020 [doi] PST - ppublish SO - Toxicol Appl Pharmacol. 2010 Jan 1;242(1):100-8. doi: 10.1016/j.taap.2009.09.020. Epub 2009 Oct 2.