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High Content Screening Analysis to Evaluate the Toxicological Effects of Harmful and Potentially Harmful Constituents (HPHC)
Published on: May 10, 2016
[Toxicity of dichloropropanols]
Yoshiki Kuroda1, Yukiko Fueta, Kiyotaka Kohshi
1Department of Public Health, Miyazaki Medical Collage, Kiyotake-machi, Miyazaki-gun 889-1692, Japan.
Journal of UOEH
|September 19, 2002
Summary
Dichloropropanols (DCPs) cause significant liver damage, indicated by elevated liver enzymes and necrosis. This study suggests free radicals contribute to DCP toxicity, impacting liver function and potentially the hippocampus.
Area of Science:
- Toxicology
- Hepatology
- Neuroscience
Background:
- Dichloropropanols (DCPs) are industrial chemicals with limited reported toxicity data.
- A 1992 outbreak highlighted acute hepatic damage in workers exposed to DCPs.
- Understanding DCP toxicity mechanisms is crucial for occupational safety.
Purpose of the Study:
- To review and detail the toxicity of dichloropropanols (DCPs).
- To investigate the mechanism of DCP-induced liver damage.
- To assess the impact of DCPs on hematological parameters and neurological function.
Main Methods:
- Animal models were used to determine lethal doses (LD50) of 1,3-dichloro-2-propanol (DC2P).
- Assays were performed to measure serum liver enzymes (AST, ALT), hepatic malondialdehyde, glutathione S-transferase activity, and glutathione content.
- Hematological parameters (leukocytes, platelets, fibrinogen) and prothrombin time were analyzed.
- Electrophysiological recordings in the hippocampus (CA1 area) were conducted.
Main Results:
- DC2P exposure (1/2x, 1x, 2x LD50) caused marked elevation in AST and ALT, with massive liver necrosis.
- Increased hepatic malondialdehyde and decreased glutathione S-transferase activity/glutathione content suggest free radical involvement.
- DC2P (1x LD50) led to reduced leukocytes, platelets, fibrinogen, and prolonged prothrombin time.
- Inhibition of hippocampal population spikes was observed after DC2P exposure.
Conclusions:
- 1,3-dichloro-2-propanol (DC2P) is hepatotoxic, inducing necrosis and oxidative stress.
- DCPs exhibit hematotoxicity, affecting clotting factors and blood cell counts.
- Evidence suggests DCPs may have neurotoxic effects, impacting hippocampal function.
- Free radical mechanisms are implicated in dichloropropanol toxicity.
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