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Hyperproliferation markers in ear canal epidermis.

João Daniel Caliman e Gurgel¹, Siqueira Barbosa Pereira, Adriana Leal Alves

¹School of Medical Sciences of the Santa Casa de São Paulo hospital.

Brazilian Journal of Otorhinolaryngology

|October 22, 2010

Summary

This summary is machine-generated.

This review analyzes hyperproliferation markers in the external auditory canal epidermis. Studies show concentrations of cytokeratin 16 (CK16), Ki-67, and PCNA in specific ear regions.

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Area of Science:

Otorhinolaryngology
Dermatology
Cell Biology

Background:

Immunohistochemical methods are used to study the external auditory canal epidermis.
Various antigens, including cytokeratins, cytokines, and hyperproliferation markers, can be assessed.
The external auditory canal epidermis serves as a control in studies of ear pathologies like cholesteatoma.

Purpose of the Study:

To systematically review and analyze existing literature on immunohistochemical hyperproliferation markers in normal external auditory canal epidermis.
To consolidate knowledge on the expression patterns of these markers.

Main Methods:

A systematic review of indexed international journal articles published up to 2009.
Focus on studies employing immunohistochemical techniques.

Main Results:

Several hyperproliferation-related antigens were investigated.
Cytokeratin 16 (CK16), Ki-67, and PCNA were the most frequently studied markers.
These markers were found to be concentrated in the annulus tympanicus, adjacent meatus, and tympanic regions, particularly in lower areas.

Conclusions:

External auditory canal epidermis is commonly used as a control in cholesteatoma research.
A significant concentration of hyperproliferative antigens (CK16, Ki-67, PCNA) exists in specific regions of the external auditory canal epidermis.
This suggests a potential role for these markers in the normal physiology or pathology of the external ear.