Toxicology letters · 1984
An experimental study of the effects of lead acetate on hearing. Cochlear microphonics and action potential of the guinea pig.
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Yamamura K, Kishi R, Maehara N, Sadamoto T, Uchino E
Аннотация
Guinea pigs were poisoned with repeated i.p. injections of 1% lead acetate. After 5 weeks, the animals were examined electrophysiologically by using cochlear microphonics (CM) and action potential (AP). The thresholds of maximum voltage of N1 in the AP of the animals injected with a total of 100 mg lead acetate were elevated about 15 dB and increased N1 latency was also observed. However, no significant changes in those of CM were found. The results suggest that lead acetate not only induces damage to the peripheral nerves, but also to the cranial nerves.