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Effect of toluene on bioamine-containing structures in the spleen
N N Golubtsova1, L A Lyubovtseva, A O Loit
1State Epidemiological Surveillance Center, Chuvash Republic, Chuvash State University, Cheboksary; St. Petersburg Medical Upgrading Academy.
Abstract:
The effect of toluene administered into the stomach on amino-containing structures in the spleen of random-bred albino mice was studied. It was shown by Falck-Hillarp method that 6 h after treatment the toxicant stimulated splenic mast cell population and inhibited other amino-containing structures. It is therefore suggested that in control mice the major role in bioamine metabolism in the spleen is played by granular fluorescent cells, while after poisoning, mast cells functioning as adapters acquire the primary role. The levels of catecholamines and serotonin in nervous and nonnervous structures peaked 1 week after poisoning and returned to normal after 4 weeks. Presumably, toluene suppresses the immunity starting from the second week after treatment.
Insights
Toluene exposure alters spleen bioamine metabolism in mice, increasing mast cells and temporarily affecting neurotransmitter levels. This suggests toluene may suppress immune function after initial toxic effects.
Area of Science:
- Toxicology
- Immunology
- Neuroscience
- Histology
Background:
- Toluene is an industrial solvent with known toxic effects.
- The spleen plays a crucial role in immune responses and filtering blood.
- Bioamine metabolism in the spleen is critical for its function.
Purpose of the Study:
- To investigate the impact of oral toluene administration on splenic amino-containing structures in mice.
- To elucidate the role of mast cells and other cellular components in bioamine metabolism following toluene exposure.
- To assess the temporal changes in catecholamines and serotonin levels in the spleen post-toluene treatment.
Main Methods:
- Oral administration of toluene to random-bred albino mice.
- Histochemical analysis using the Falck-Hillarp method to visualize amino-containing structures.
- Quantification of catecholamines and serotonin levels in splenic tissues at various time points.
Main Results:
- Toluene significantly stimulated splenic mast cell populations 6 hours post-administration.
- Other amino-containing structures in the spleen were inhibited by toluene.
- Catecholamine and serotonin levels peaked at 1 week and normalized by 4 weeks after toluene exposure.
Conclusions:
- Mast cells appear to play a primary role in splenic bioamine metabolism after toluene poisoning, adapting to the toxicant.
- Toluene exposure alters the normal balance of bioamine metabolism in the spleen.
- The observed changes suggest toluene may suppress immune function, potentially starting from the second week after exposure.