1
|
Zelko IN, Taylor BS, Das TP, Watson WH, Sithu ID, Wahlang B, Malovichko MV, Cave MC, Srivastava S. Effect of vinyl chloride exposure on cardiometabolic toxicity. ENVIRONMENTAL TOXICOLOGY 2022; 37:245-255. [PMID: 34717031 PMCID: PMC8724461 DOI: 10.1002/tox.23394] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 07/09/2021] [Accepted: 10/22/2021] [Indexed: 05/08/2023]
Abstract
Vinyl chloride (VC) is an organochlorine mainly used to manufacture its polymer polyvinyl chloride, which is extensively used in the manufacturing of consumer products. Recent studies suggest that chronic low dose VC exposure affects glucose homeostasis in high fat diet-fed mice. Our data suggest that even in the absence of high fat diet, exposure to VC (0.8 ppm, 6 h/day, 5 day/week, for 12 weeks) induces glucose intolerance (1.0 g/kg, i.p.) in male C57BL/6 mice. This was accompanied with the depletion of hepatic glutathione and a modest increase in lung interstitial macrophages. VC exposure did not affect the levels of circulating immune cells, endothelial progenitor cells, platelet-immune cell aggregates, and cytokines and chemokines. The acute challenge of VC-exposed mice with LPS did not affect lung immune cell composition or plasma IL-6. To examine the effect of VC exposure on vascular inflammation and atherosclerosis, LDL receptor-KO mice on C57BL/6 background maintained on western diet were exposed to VC for 12 weeks (0.8 ppm, 6 h/day, 5 day/week). Unlike the WT C57BL/6 mice, VC exposure did not affect glucose tolerance in the LDL receptor-KO mice. Plasma cytokines, lesion area in the aortic valve, and markers of lesional inflammation in VC-exposed LDL receptor-KO mice were comparable with the air-exposed controls. Collectively, despite impaired glucose tolerance and modest pulmonary inflammation, chronic low dose VC exposure does not affect surrogate markers of cardiovascular injury, LPS-induced acute inflammation in C57BL/6 mice, and chronic inflammation and atherosclerosis in the LDL receptor-KO mice.
Collapse
Affiliation(s)
- Igor N. Zelko
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Medicine, Division of Environmental Medicine, University of Louisville, KY 40202
| | - Breandon S. Taylor
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Medicine, Division of Environmental Medicine, University of Louisville, KY 40202
- Department of Pharmacology and Toxicology, University of Louisville, KY 40202
| | - Trinath P. Das
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Medicine, Division of Environmental Medicine, University of Louisville, KY 40202
| | - Walter H. Watson
- Department of Pharmacology and Toxicology, University of Louisville, KY 40202
- Hepatobiology and Toxicology Program, University of Louisville, KY 40202
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville, KY 40202
| | - Israel D. Sithu
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Medicine, Division of Environmental Medicine, University of Louisville, KY 40202
- Department of Pharmacology and Toxicology, University of Louisville, KY 40202
| | - Banrida Wahlang
- Superfund Research Center, University of Louisville, KY 40202
- Department of Pharmacology and Toxicology, University of Louisville, KY 40202
- Hepatobiology and Toxicology Program, University of Louisville, KY 40202
| | - Marina V. Malovichko
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Medicine, Division of Environmental Medicine, University of Louisville, KY 40202
| | - Matthew C. Cave
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Pharmacology and Toxicology, University of Louisville, KY 40202
- Hepatobiology and Toxicology Program, University of Louisville, KY 40202
| | - Sanjay Srivastava
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Medicine, Division of Environmental Medicine, University of Louisville, KY 40202
- Department of Pharmacology and Toxicology, University of Louisville, KY 40202
| |
Collapse
|
4
|
Uziel M, Munro NB, Katz DS, Vo-Dinh T, Zeighami EA, Waters MD, Griffith JD. DNA adduct formation by 12 chemicals with populations potentially suitable for molecular epidemiological studies. Mutat Res 1992; 277:35-90. [PMID: 1376441 DOI: 10.1016/0165-1110(92)90025-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
DNA adduct formation, route of absorption, metabolism and chemistry of 12 hazardous chemicals are reviewed. Methods for adduct detection are also reviewed and approaches to sensitivity and specificity are identified. The selection of these 12 chemicals from the Environmental Protection Agency list of genotoxic chemicals was based on the availability of information and on the availability of populations potentially suitable for molecular epidemiological study. The 12 chemicals include ethylene oxide, styrene, vinyl chloride, epichlorohydrin, propylene oxide, 4,4'-methylenebis-2-chloroaniline, benzidine, benzidine dyes (Direct Blue 6, Direct Black 38 and Direct Brown 95), acrylonitrile and benzyl chloride. While some of these chemicals (styrene and benzyl chloride, possibly Direct Blue 6) give rise to unique DNA adducts, others do not. Potentially confounding factors include mixed exposures in the work place, as well the formation of common DNA adducts. Additional research needs are identified.
Collapse
Affiliation(s)
- M Uziel
- Health and Safety Research Division, Oak Ridge National Laboratory, TN 37831-6101
| | | | | | | | | | | | | |
Collapse
|
5
|
Bolt HM. Pharmacokinetic factors and their implication in the induction of mouse liver tumors by halogenated hydrocarbons. ARCHIVES OF TOXICOLOGY. SUPPLEMENT. = ARCHIV FUR TOXIKOLOGIE. SUPPLEMENT 1987; 10:190-203. [PMID: 3555414 DOI: 10.1007/978-3-642-71617-1_18] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The presently available data on pharmacokinetics of halogenated solvents which produce hepatic tumors in B6C3F1 mice, but not in rats, are reviewed. Such compounds are trichloroethylene, perchloroethylene, 1,1,2-trichloroethane, 1,1,2,2-tetrachloroethane, and dichloromethane. It seems likely that higher metabolic rates in mice (compared with other species) may lead to a species-selective toxicity of such compounds. Recurrent cytotoxicity which leads to stimulation of cell replication seems to be a contributing factor in the pathogenesis of mouse liver tumors. However, it is likely that more than one factor contributes to the unique tumor response of the B6C3F1 mouse.
Collapse
|