Auditory epidermal cell migration: VII. Antigen expression of proliferating cell nuclear antigens, PCNA and Ki-67 in human tympanic membrane and external auditory canal

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Kakoi, HiroyukiUppsala universitet,Institutionen för kirurgiska vetenskaper,Ear-Nose-Throat (author)

Auditory epidermal cell migration : VII. Antigen expression of proliferating cell nuclear antigens, PCNA and Ki-67 in human tympanic membrane and external auditory canal

Article/chapterEnglish1997

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1997
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LIBRIS-ID:oai:DiVA.org:uu-58160
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-58160URI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

Notes

A location of proliferating cells was investigated in eight human normal tympanic membranes (TMs) and external auditory canals (EACs) by an immunohistochemical method using two different types of antibodies for nuclear antigens in proliferating cells: anti-PCNA monoclonal antibody, and anti-Ki-67 polyclonal antibody. Four specimens prepared for cryostat sections were immunostained by both antibodies. Another four were fixed in 4% formaldehyde solution, embedded in paraffin wax and were reacted only with anti-PCNA antibodies. The expression pattern of Ki-67 was basically the same as of PCNA. In the pars tensa (PT), immunoreactivities were expressed in the nuclei of basal layer cells and cells just overlying the basal layer of epidermis both in the handle of the malleus (HM) and annular regions. In the intermediate region of the PT, no immunoreactivity was found basically, apart from a few labelled cells observed in the upper-third of the superior quadrant. In the pars flaccida (PF) and in both the osseous and cartilaginous regions of the EAC, positive cells were also situated in the basal layer and the deeper aspect of the suprabasal layers without any specific distributing pattern. It was certified that the generation centre of epidermal cells (keratinocytes) in the PT was located in both the HM and annular regions, and that stem cells in the PF and the EAC were uniformly scattered in the basal layer and the deeper aspect of the spinous layer. According to these findings, the migratory patterns of auditory epidermal cells in the human TM and EAC were discussed.

Subject headings and genre

MEDICINE
MEDICIN

Added entries (persons, corporate bodies, meetings, titles ...)

Anniko, MattiUppsala universitet,Institutionen för kirurgiska vetenskaper,Ear-Nose-Throat (author)
Kinnefors, AndersUppsala universitet,Institutionen för kirurgiska vetenskaper,Ear-Nose-Throat (author)
Rask-Andersen, HelgeUppsala universitet,Institutionen för kirurgiska vetenskaper,Ear-Nose-Throat (author)
Uppsala universitetInstitutionen för kirurgiska vetenskaper (creator_code:org_t)

Related titles

In:Acta Oto-Laryngologica117:1, s. 100-80001-64891651-2251

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