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Inhal Toxicol. 2018 Nov 27:1-7. doi: 10.1080/08958378.2018.1526233. [Epub ahead of print]

Toxic effects of subacute inhalation exposure to trichloroethylene on serum lipid profile, glucose and biochemical parameters in Sprague-Dawley rats.

Author information

1
a Department of Occupational Health Engineering, School of Health , Shiraz University of Medical Sciences , Shiraz , Iran.
2
b Department of Pharmacology Toxicology, School of Pharmacy , Shiraz University of Medical Sciences , Shiraz , Iran.
3
c Department of Occupational Health, School of Public Health , Tehran University of Medical Sciences , Tehran , Iran.
4
d Department of Occupational Health, School of Public Health and Safety , Shahid Beheshti University of Medical Sciences , Tehran , Iran.
5
e Modaresi Laboratory , Larestan University of Medical Sciences, Larestan , Iran.
6
f Department of Nutrition, School of Public Health , Larestan University of Medical Sciences , Larestan , Iran.
7
g Department of Environmental Health Engineering, School of Health , Larestan University of Medical Sciences , Larestan , Iran.

Abstract

The current study evaluated the inhalation toxicity of trichloroethylene (TCE) at 0, 10, 100, 250 and 400 ppm in Sprague-Dawley rats for 10 day period, because the subacute inhalation toxicity of TCE on serum lipid profile, glucose and some biochemical parameters has not been previously reported. TCE vapors were generated using the dynamic generation system based on evaporation method in the exposure chamber. On the basis of the results, mean serum low-density lipoprotein (LDL) and albumin (ALB) decreased significantly in all the groups exposed to TCE compared with the control group (p < .005), but there was a significant increase for parameters: fasting blood glucose (FBG) and alkaline phosphatase (ALP) (p < .005). Rats exposed to 400 ppm TCE showed a significant decrease in serum cholesterol (CHOL) and protein (Pr) compared with the control group (p < .005). A negative relationship was found between triglycerides (TG), very low density lipoprotein (VLDL), CHOL, LDL, Pr, ALB and urea levels and the subacute exposure to concentrations of TCE (R2 = -0.26, p < .05), but there was a direct correlation for parameters FBG, ALP and alanine aminotransferase (ALT) (R2 = 0.42, p < .05). In conclusion, studies with Sprague-Dawley rats demonstrated that subacute inhalation exposure to TCE (≥ 100 PPM) is associated with biochemical and lipotoxicity in the form of decreased serum ALB and LDL and raised ALP and glucose levels. The present study also provides additional evidence relating to decreased serum CHOL and Pr after subacute inhalation exposure to 400 ppm TCE.

KEYWORDS:

Trichloroethylene; animal model; biochemical parameter; glucose; lipid profile; subacute exposure

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