PMID- 36012318 OWN - NLM STAT- MEDLINE DCOM- 20220829 LR - 20220830 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 23 IP - 16 DP - 2022 Aug 12 TI - Welding Fume Instillation in Isolated Perfused Mouse Lungs-Effects of Zinc- and Copper-Containing Welding Fumes. LID - 10.3390/ijms23169052 [doi] LID - 9052 AB - Zinc- and copper-containing welding fumes can cause systemic inflammation after exposure in humans. Recent ex vivo studies have shown that the observed inflammation originates from exposed immune cells. In vitro studies identified the soluble fraction of metal particles as the main effectors. Isolated perfused mouse lungs (IPLs) were perfused and ventilated for 270 min. Lungs were instilled with saline solution (control), welding fume particle suspension (WFs) or the soluble fraction of the welding fumes (SF-WFs). Bronchoalveolar lavage fluid (BALF) and perfusate samples were analyzed for cytokine levels and lung tissue mRNA expression levels were analyzed via RT-PCR. All lungs instilled with WFs did not complete the experiments due to a fatal reduction in tidal volume. Accordingly, IL-6 and MPO levels were significantly higher in BALF of WF lungs compared to the control. IL-6 and MPO mRNA expression levels were also increased for WFs. Lungs instilled with SF-WFs only showed mild reactions in tidal volume, with BALF and mRNA expression levels not significantly differing from the control. Zinc- and copper-containing welding fume particles adversely affect IPLs when instilled, as evidenced by the fatal loss in tidal volume and increased cytokine expression and secretion. The effects are mainly caused by the particles, not by the soluble fraction. FAU - Krabbe, Julia AU - Krabbe J AUID- ORCID: 0000-0003-4205-9783 AD - Institute of Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany. FAU - Kraus, Thomas AU - Kraus T AD - Institute of Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany. FAU - Krabbe, Hanif AU - Krabbe H AD - European Vascular Centre Aachen-Maastricht, Department of Vascular Surgery, Medical Faculty, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52074 Aachen, Germany. FAU - Martin, Christian AU - Martin C AD - Institute of Pharmacology and Toxicology, Medical Faculty, RWTH Aachen University, Wendlingweg 2, 52074 Aachen, Germany. FAU - Ziegler, Patrick AU - Ziegler P AD - Institute of Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany. LA - eng PT - Journal Article DEP - 20220812 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Air Pollutants, Occupational) RN - 0 (Cytokines) RN - 0 (Gases) RN - 0 (Interleukin-6) RN - 0 (RNA, Messenger) RN - 789U1901C5 (Copper) RN - J41CSQ7QDS (Zinc) SB - IM MH - *Air Pollutants, Occupational/toxicity MH - Animals MH - Copper/pharmacology MH - Cytokines/metabolism MH - Gases/pharmacology MH - Inflammation/etiology MH - Inhalation Exposure MH - Interleukin-6/genetics/pharmacology MH - Lung/metabolism MH - Mice MH - RNA, Messenger/genetics MH - *Welding MH - Zinc/pharmacology PMC - PMC9408907 OTO - NOTNLM OT - copper OT - isolated perfused lung OT - myeloperoxidase OT - welding fumes OT - zinc COIS- All authors have carried out research in the past funded by the Institution for Statutory Accident Insurance and Prevention in the woodworking and metalworking industry (BGHM), Mainz, Germany, with unrestricted grants to the University Hospital RWTH Aachen. J.K. and T.K. have held paid lectures about welding fume effects. EDAT- 2022/08/27 06:00 MHDA- 2022/08/30 06:00 PMCR- 2022/08/12 CRDT- 2022/08/26 01:22 PHST- 2022/06/29 00:00 [received] PHST- 2022/08/08 00:00 [revised] PHST- 2022/08/09 00:00 [accepted] PHST- 2022/08/26 01:22 [entrez] PHST- 2022/08/27 06:00 [pubmed] PHST- 2022/08/30 06:00 [medline] PHST- 2022/08/12 00:00 [pmc-release] AID - ijms23169052 [pii] AID - ijms-23-09052 [pii] AID - 10.3390/ijms23169052 [doi] PST - epublish SO - Int J Mol Sci. 2022 Aug 12;23(16):9052. doi: 10.3390/ijms23169052.