title: Effects of subacute exposure to 1,2-dichloroethane on mouse behavior and the related mechanisms.
abstract: The aim of this study was to explore the effects of subacute exposure to 1,2-dichloroethane (1,2-DCE) on mouse behavior and the related mechanisms focusing on alteration of oxidative stress and amino acid neurotransmitters in the brain. Mouse behavior was examined by open field test. Levels of nitric oxide (NO), malondialdehyde (MDA) and nonprotein sulfhydryl (NPSH) and activity of inducible nitric oxide synthase (iNOS) and superoxide dismutase (SOD) were determined by colorimetric method. Contents of glutamate (Glu), aspartate (Asp) and gamma-aminobutyric acid (GABA) were evaluated by high-performance liquid chromatography. Reduced locomotor and exploratory activities and increased anxiety were found in 0.45 and 0.9 g/m(3) 1,2-DCE-treated mice. In contrast, increased excitability was found in 0.225 g/m(3) 1,2-DCE-treated mice. Compensatory antioxidant status and increased NOS activity and NO level in the brain were found in 1,2-DCE-treated mice. Moreover, Glu contents in 1,2-DCE-treated mice and GABA contents in 0.9 g/m(3) 1,2-DCE-treated mice increased, whereas GABA contents in 0.225 g/m(3) 1,2-DCE-treated mice decreased significantly compared with control. Taken together, our results suggested that mouse behavior could be disturbed by subacute exposure to 1,2-DCE, and the changes of amino acid neurotransmitter in the brain might be related to the behavioral effects.
authors.affiliation: Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China.
authors.forename: G
authors.initials: G
authors.lastname: Wang
authors.forename: Y
authors.initials: Y
authors.lastname: Qi
authors.forename: L
authors.initials: L
authors.lastname: Gao
authors.forename: G
authors.initials: G
authors.lastname: Li
authors.forename: X
authors.initials: X
authors.lastname: Lv
authors.forename: Y P
authors.initials: YP
authors.lastname: Jin
mesh_terms: D000393:Air Pollutants / Q000633:toxicity*; D000818:Animals; D000975:Antioxidants / Q000378:metabolism; D001522:Behavior, Animal / Q000187:drug effects*; D001921:Brain / Q000187:drug effects / Q000201:enzymology / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D005025:Ethylene Dichlorides / Q000633:toxicity*; D005106:Exploratory Behavior / Q000187:drug effects; D005260:Female; D019570:Inhalation Exposure / Q000009:adverse effects*; D008054:Lipid Peroxides / Q000378:metabolism; D051379:Mice; D009043:Motor Activity / Q000187:drug effects; D059551:Toxicity Tests, Subacute
chemical_list: D000393:Air Pollutants; D000975:Antioxidants; D005025:Ethylene Dichlorides; D008054:Lipid Peroxides; C024565:ethylene dichloride