Hyperproliferation markers in ear canal epidermis.
Several studies involving immunohistochemical methods to assess external auditory canal epidermis have been performed with different objectives. With this method it is possible to assess the expression of various antigens such as cytokeratins, cytokines, and hyperproliferation markers among others.


OBJECTIVE
to revise, describe and analyze the knowledge generated by identifiable papers published on the worldwide literature about immunohistochemical hyperproliferation markers in normal external auditory canal epidermis.


METHODS
systematic review of the papers published until 2009, in indexed international journals.


RESULTS
Various antigens related to hyperproliferation were investigated by immunohistochemical methods among the included papers. The most studied ones were cytokeratin 16, Ki-67 and PCNA.


CONCLUSIONS
most of the studies utilized external auditory canal epidermis as control sample to study external ear or middle ear cholesteatoma with immunohistochemical methods. There is a hyperproliferative antigen concentration, such as CK16, Ki-67 and PCNA, in the annulus tympanicus, adjacent meatus and tympanic regions, mainly in the lower areas.
School of Medical Sciences of the Santa Casa de São Paulo hospital.
João Daniel
JD
Caliman e Gurgel
Siqueira Barbosa
SB
Pereira
Adriana Leal
AL
Alves
Fernando Quintanilha
FQ
Ribeiro
D015415:Biomarkers / Q000032:analysis; D049109:Cell Proliferation; D018424:Cholesteatoma, Middle Ear / Q000378:metabolism*; D004424:Ear Canal / Q000378:metabolism*; D004817:Epidermis / Q000378:metabolism*; D006801:Humans; D007150:Immunohistochemistry; D053536:Keratin-16 / Q000032:analysis*; D019394:Ki-67 Antigen / Q000032:analysis*; D018809:Proliferating Cell Nuclear Antigen / Q000032:analysis; D014432:Tympanic Membrane
D015415:Biomarkers; D053536:Keratin-16; D019394:Ki-67 Antigen; D018809:Proliferating Cell Nuclear Antigen