Autoimmune potential of perchloroethylene: Role of lipid-derived aldehydes

Journal Article · Sun Oct 15 04:00:00 EDT 2017 · Toxicology and Applied Pharmacology

DOI:https://doi.org/10.1016/J.TAAP.2017.08.009· OSTI ID:22722940

Wang, Gangduo; Wang, Jianling; Ansari, G.A. Shakeel

Tetrachloroethene (perchloroethylene, PCE), an ubiquitous environmental contaminant, has been implicated in inducing autoimmunity/autoimmune diseases (ADs), including systemic lupus erythematosus (SLE) and scleroderma in humans. However, experimental evidence suggesting the potential of PCE in mediating autoimmunity is lacking. This study was, therefore, undertaken to explore PCE's potential in inducing/exacerbating an autoimmune response. Six-week old female MRL +/+ mice, in groups of 6 each, were treated with PCE (0.5 mg/ml) via drinking water for 12, 18 and 24 weeks and markers of autoimmunity and oxidative stress were evaluated. PCE exposure led to significant increases in serum anti-nuclear antibodies (ANA), anti-dsDNA and anti-scleroderma-70 (anti-Scl-70) antibodies at 18 weeks and, to a greater extent at 24 weeks, suggesting that PCE exposure exacerbated autoimmunity in our animal model. The increases in autoantibodies were associated with time-dependent increases in malondialdehyde (MDA)-protein adducts and their antibodies, as well as significantly decreased levels of antioxidants GSH and SOD. The splenocytes isolated from mice treated with PCE for 18 and 24 weeks showed greater Th17 cell proliferation and increased release of IL-17 in culture supernatants following stimulation with MDA-mouse serum albumin adducts, suggesting that MDA-modified proteins may act as an immunologic trigger by activating Th17 cells and contribute to PCE-mediated autoimmunity. Our studies thus provide an experimental evidence that PCE induces/exacerbates an autoimmune response and lipid-derived aldehydes (such as MDA) contribute to this response. - Highlights: • PCE induced/exacerbated an autoimmune response in MRL +/+ mice. • PCE led to increases in lipid-derived aldehyde (LDA)-protein adducts in MRL +/+ mice. • LDAs contribute to PCE-mediated autoimmunity via activating Th17 cells.

• OSTI ID: 22722940
• Journal Information: Toxicology and Applied Pharmacology, Journal Name: Toxicology and Applied Pharmacology Vol. 333; ISSN TXAPA9; ISSN 0041-008X
• Country of Publication: United States
• Language: English

Related Subjects

60 APPLIED LIFE SCIENCES
ADDUCTS
ALDEHYDES
ANTIBODIES
CELL PROLIFERATION
DRINKING WATER
ETHYL RADICALS
LIPIDS
MICE
POTENTIALS
SUPEROXIDE DISMUTASE
TIME DEPENDENCE