PMID- 26072274 OWN - NLM STAT- MEDLINE DCOM- 20151116 LR - 20190522 IS - 1096-0333 (Electronic) IS - 0041-008X (Linking) VI - 287 IP - 3 DP - 2015 Sep 15 TI - Toluene diisocyanate: Induction of the autotaxin-lysophosphatidic acid axis and its association with airways symptoms. PG - 222-31 LID - S0041-008X(15)30013-2 [pii] LID - 10.1016/j.taap.2015.06.006 [doi] AB - Diisocyanates are industrial chemicals which have a wide range of applications in developed and developing countries. They are notorious lung toxicants and respiratory sensitizers. However, the mechanisms behind their adverse effects are not adequately characterized. Autotaxin (ATX) is an enzyme producing lysophosphatidic acid (LPA), and the ATX-LPA axis has been implicated in lung related inflammatory conditions and diseases, including allergic asthma, but not to toxicity of environmental low-molecular-weight chemicals. We investigated effects of toluene diisocyanate (TDI) on ATX induction in human lung epithelial cell models, and we correlated LPA-levels in plasma to biomarkers of TDI exposure in urine collected from workers exposed to <5ppb (parts per billion). Information on workers' symptoms was collected through interviews. One nanomolar TDI robustly induced ATX release within 10min in vitro. A P2X7- and P2X4-dependent microvesicle formation was implicated in a rapid ATX release and a subsequent protein synthesis. Co-localization between purinergic receptors and ATX was documented by immunofluorescence and confocal microscopy. The release was modulated by monocyte chemoattractant protein-1 (MCP-1) and by extracellular ATP. In workers, we found a dose-response relationship between TDI exposure biomarkers in urine and LPA levels in plasma. Among symptomatic workers reporting "sneezing", the LPA levels were higher than among non-symptomatic workers. This is the first report indicating induction of the ATX-LPA axis by an environmental low-molecular-weight chemical, and our data suggest a role for the ATX-LPA axis in TDI toxicity. CI - Copyright (c) 2015 Elsevier Inc. All rights reserved. FAU - Brostrom, Julia M AU - Brostrom JM AD - Division of Occupational and Environmental Medicine, Lund University, SE 221 85 Lund, Sweden. FAU - Ye, Zhi-Wei AU - Ye ZW AD - Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE 171 77 Stockholm, Sweden. FAU - Axmon, Anna AU - Axmon A AD - Division of Occupational and Environmental Medicine, Lund University, SE 221 85 Lund, Sweden. FAU - Littorin, Margareta AU - Littorin M AD - Division of Occupational and Environmental Medicine, Lund University, SE 221 85 Lund, Sweden. FAU - Tinnerberg, Hakan AU - Tinnerberg H AD - Division of Occupational and Environmental Medicine, Lund University, SE 221 85 Lund, Sweden. FAU - Lindh, Christian H AU - Lindh CH AD - Division of Occupational and Environmental Medicine, Lund University, SE 221 85 Lund, Sweden. FAU - Zheng, Huiyuan AU - Zheng H AD - Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE 171 77 Stockholm, Sweden. FAU - Ghalali, Aram AU - Ghalali A AD - Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE 171 77 Stockholm, Sweden. FAU - Stenius, Ulla AU - Stenius U AD - Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE 171 77 Stockholm, Sweden. FAU - Jonsson, Bo A G AU - Jonsson BA AD - Division of Occupational and Environmental Medicine, Lund University, SE 221 85 Lund, Sweden. FAU - Hogberg, Johan AU - Hogberg J AD - Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE 171 77 Stockholm, Sweden. Electronic address: johan.hogberg@ki.se. LA - eng PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20150611 PL - United States TA - Toxicol Appl Pharmacol JT - Toxicology and applied pharmacology JID - 0416575 RN - 0 (Biomarkers) RN - 0 (Lysophospholipids) RN - 0 (P2RX7 protein, human) RN - 0 (Receptors, Purinergic P2X4) RN - 0 (Receptors, Purinergic P2X7) RN - 17X7AFZ1GH (Toluene 2,4-Diisocyanate) RN - EC 3.1.4.- (Phosphoric Diester Hydrolases) RN - EC 3.1.4.39 (alkylglycerophosphoethanolamine phosphodiesterase) RN - PG6M3969SG (lysophosphatidic acid) SB - IM MH - Adult MH - Biomarkers/blood/urine MH - Cell Line, Tumor MH - Dose-Response Relationship, Drug MH - Enzyme Induction MH - Epithelial Cells/drug effects/metabolism MH - Female MH - Humans MH - Lung/*drug effects/enzymology/physiopathology MH - Lung Diseases/*chemically induced/diagnosis/metabolism MH - Lysophospholipids/blood/*metabolism/urine MH - Male MH - Middle Aged MH - Occupational Diseases/*chemically induced/diagnosis/metabolism MH - Occupational Exposure/adverse effects MH - Phosphoric Diester Hydrolases/*biosynthesis MH - RNA Interference MH - Receptors, Purinergic P2X4/drug effects/metabolism MH - Receptors, Purinergic P2X7/drug effects/metabolism MH - Risk Assessment MH - Signal Transduction/drug effects MH - Sweden MH - Time Factors MH - Toluene 2,4-Diisocyanate/*adverse effects MH - Transfection MH - Up-Regulation MH - Young Adult OTO - NOTNLM OT - Autotaxin-lysophosphatidic acid axis OT - Exposure biomarker OT - Microvesicles OT - Purinergic receptors OT - Respiratory sensitizer OT - Toluene diisocyanate toxicity EDAT- 2015/06/15 06:00 MHDA- 2015/11/17 06:00 CRDT- 2015/06/15 06:00 PHST- 2015/03/10 00:00 [received] PHST- 2015/06/02 00:00 [revised] PHST- 2015/06/05 00:00 [accepted] PHST- 2015/06/15 06:00 [entrez] PHST- 2015/06/15 06:00 [pubmed] PHST- 2015/11/17 06:00 [medline] AID - S0041-008X(15)30013-2 [pii] AID - 10.1016/j.taap.2015.06.006 [doi] PST - ppublish SO - Toxicol Appl Pharmacol. 2015 Sep 15;287(3):222-31. doi: 10.1016/j.taap.2015.06.006. Epub 2015 Jun 11.