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Triethyltin: ambient temperature alters visual system toxicity

R S Dyer, W E Howell

    Neurobehavioral Toxicology and Teratology
    |March 1, 1982
    PubMed
    Summary
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    Triethyltin (TET) exposure prolongs visual evoked response (VER) latencies in rats. Ambient temperature significantly influences recovery, with warmer environments leading to more severe and prolonged neurotoxic effects from TET exposure.

    Area of Science:

    • Neurotoxicology
    • Environmental Physiology

    Background:

    • Acute triethyltin (TET) exposure is known to increase visual evoked response (VER) latencies.
    • TET-induced hypothermia can be modulated by ambient temperature, suggesting a link between core temperature and neurotoxicity.

    Purpose of the Study:

    • To investigate the influence of ambient temperature on the neurotoxic effects of acute triethyltin (TET) exposure on the visual evoked response (VER).

    Main Methods:

    • Rats with chronic electrodes received TET (6 mg/kg) or saline.
    • Animals were housed in either warm (30°C) or cool (22°C) environments for 7 hours.
    • VERs were recorded during exposure and for two weeks post-exposure.

    Main Results:

    • TET administration significantly increased VER peak latencies in rats.

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  • Recovery of VER latencies was observed in cool environments, while latencies remained elevated longer in warm environments.
  • This indicates a more severe neurotoxic impact of TET in warmer conditions.

    • Conclusions:

    • Ambient temperature plays a critical role in modulating the severity and duration of TET-induced neurotoxicity.
    • Toxicant-induced changes in core body temperature are significant factors influencing the manifestation of neurotoxic effects.