Abstract
A single injection of trimethyltin chloride (TMT; 2, 4, or 6 mg/kg) is shown to produce a frequency-specific, dose-dependent auditory impairment, as well as to decrease the amplitude of the acoustically elicited startle response, in exposed rats. This finding stands in contrast to data presented earlier on the effects of triethyltin bromide (TET), which produces changes in startle response without affecting auditory acuity. Animals intoxicated with TMT at moderate doses appear to recover their auditory acuity over the course of several weeks. This slow recovery of auditory function, which is uncharacteristic for chemical ototoxicity, suggests that TMT may be a useful model agent for studying ototoxic mechanisms.
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