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Gamma benzene hexachloride in guinea-pig brain after topical application
The Journal of Investigative Dermatology
|May 1, 1977
Summary
Topical application of gamma benzene hexachloride in guinea pigs led to increased blood and brain levels with repeated use. Brain concentrations were significantly higher than blood levels, indicating potential neurotoxicity.
Area of Science:
- Toxicology
- Neuroscience
- Environmental Health
Background:
- Gamma benzene hexachloride (lindane) is an organochlorine pesticide with known neurotoxic potential.
- Understanding its absorption, distribution, and accumulation in the central nervous system is crucial for risk assessment.
Purpose of the Study:
- To quantify blood and brain gamma benzene hexachloride levels after topical administration in a guinea pig model.
- To investigate the relationship between application frequency and tissue accumulation.
Main Methods:
- Guinea pigs were subjected to repeated topical applications of gamma benzene hexachloride.
- Blood and brain tissue samples were collected and analyzed for gamma benzene hexachloride concentrations.
Main Results:
- Gamma benzene hexachloride levels in both blood and brain increased proportionally with the number of applications.
- Brain concentrations of gamma benzene hexachloride were consistently at least 10 times higher than blood concentrations.
Conclusions:
- Topical application leads to systemic absorption and significant accumulation of gamma benzene hexachloride in the brain.
- The findings highlight the neurotoxic risk associated with topical exposure, particularly with repeated applications.