The interaction of noise and aspirin in the chick basilar papilla. Noise and aspirin toxicity

Archives of Otolaryngology--head & Neck Surgery
P R LambertE W Rubel

Abstract

The possible synergism between noise and aspirin for causing cochlear damage was examined histologically. Six chicks fed aspirin for five days and five chicks fed a normal diet only were paired and placed in sound chambers. They were exposed to a 1500-Hz tone at 115 dB sound pressure level for eight hours. The mean serum salicylate level just before noise exposure was 24 mg/dL (1.74 mmol/L). Ten days later they were killed, and the temporal bones were processed. Hair cell counts were made at 100-microns intervals throughout the length of the basilar papilla (cochlea). The noise produced a discrete cochlear lesion centered about 30% of the distance from the base to apex. The addition of aspirin did not significantly alter the extent or location of this lesion. One aspirin-fed chick had a unilateral middle ear effusion, and a striking shift in the center of damage toward the apex was noted in this cochlea.

Citations

Jan 1, 1991·American Journal of Otolaryngology·F A Boettcher, R J Salvi
Jul 6, 2000·Progress in Neurobiology·Y Cazals

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