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Updated: Feb 3, 2026

Human Liver Microphysiological System for Assessing Drug-Induced Liver Toxicity In Vitro
Published on: January 31, 2022
Assessment of exogenous melatonin action on mouse liver cells after exposure to soman
Teodora Król1, Wojciech Trybus1, Ewa Trybus1
1Department of Cell Biology and Electron Microscopy, Institute of Biology, The Jan Kochanowski University, Kielce, Poland.
Abstract:
Melatonin is a hormone with many different biological activities and therefore seems to be an important factor reducing the harmful effects caused by toxic organophosphorus compounds. In this study, we attempted to evaluate the protective effect of melatonin on liver cells of mice challenged with chemical warfare agent-soman. The study was conducted at the level of ultrastructural and biochemical changes (analysis of the activity of model lysosomal enzymes and assessment of the level of lipid peroxidation). Significant biochemical and ultrastructural changes were found in the studied mouse hepatocytes after administration of soman alone, and soman in combination with melatonin, and the scope of the disclosed changes was dependent on the time of action of the examined factors. Melatonin has shown protective action, shielding liver cells from toxic effects of soman, which may result from its antioxidant properties and stimulation of the lysosomal compartment, the system coordinating the isolation and removal of cell-threatening processes.
Insights
Melatonin protects mouse liver cells from the toxic effects of the nerve agent soman. This hormone
Area of Science:
- Toxicology
- Biochemistry
- Cell Biology
Background:
- Organophosphorus compounds, like soman, pose significant health risks.
- Melatonin, a hormone, exhibits diverse biological activities.
- Understanding protective mechanisms against chemical warfare agents is crucial.
Purpose of the Study:
- To evaluate the protective effect of melatonin against soman-induced liver toxicity in mice.
- To investigate the impact of melatonin on cellular and biochemical changes in hepatocytes exposed to soman.
Main Methods:
- Mice were challenged with soman, alone and in combination with melatonin.
- Ultrastructural analysis of liver cells was performed.
- Biochemical assays assessed lysosomal enzyme activity and lipid peroxidation levels.
Main Results:
- Soman administration induced significant biochemical and ultrastructural changes in mouse hepatocytes.
- Melatonin treatment demonstrated a protective effect, mitigating soman-induced cellular damage.
- The extent of changes was time-dependent, with melatonin showing protective action.
Conclusions:
- Melatonin exhibits protective properties against soman toxicity in liver cells.
- Its protective action may stem from antioxidant properties and stimulation of the lysosomal compartment.
- Melatonin could be a potential therapeutic agent against organophosphorus compound poisoning.
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