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Raul M. Cruz, MD; Paul R. Lambert, MD; Edwin W. Rubel, PhD

Arch Otolaryngol Head Neck Surg. 1987;113(10):1058-1062.

Abstract
• This study examines the temporal pattern of hair cell loss in the chick basilar papilla following ten days of gentamicin administration in hatchling chicks. Chicks were subsequently killed at ages 11, 18, 25, and 32 days. The basilar papillae were embedded in plastic and serially sectioned for light microscopic analysis. Hair cell counts were obtained at 100-µm intervals throughout the length of the papilla. Significant hair cell loss was documented basally in the 11-day-old chicks, and spread apically over time to maximal loss in the 18-day-old animals. Relative to the control chicks, there was a 36% hair cell loss in these animals. Interestingly, there appears to be a progressive partial recovery of the normal hair cell counts in the 25- and 32-day-old animals.

(Arch Otolaryngol Head Neck Surg 1987;113:1058-1062)

Author Affiliations
From the Department of Otolaryngology–Head and Neck Surgery, University of Virginia Medical Center, Charlottesville (Drs Cruz and Lambert), and the Department of Otolaryngology–Head and Neck Surgery, University of Washington, Seattle (Dr Rubel).

Footnotes
Accepted for publication July 28, 1987.

Read before the Research Forum of the American Academy of Otolaryngology–Head and Neck Surgery, Atlanta, Oct 18, 1985.

Reprint requests to Box 430, Department of Otolaryngology–Head and Neck Surgery, University of Virginia Medical Center, Charlottesville, VA 22908 (Dr Lambert).

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