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Three-dimensional structure of outer hair cell pillars
Karolinska Institutet / Karolinska University Hospital, Stockholm, Sweden.
Karolinska Institutet, Stockholm.
Karolinska Institutet, Stockholm.
Karolinska Institutet, Stockholm.
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2009 (English)In: Acta Oto-Laryngologica, ISSN 0001-6489, Vol. 129, no 9, 940-945 p.Article in journal (Refereed) Published
Abstract [en]

Conclusions. Electron tomography was used to generate three-dimensional reconstructions of the pillars that connect the cell membrane with the cytoskeleton of the outer hair cell. Results are consistent with the hypothesis that pillars are important for mechanically linking the membrane with the cytoskeleton.

Objective: To make a qualitative assessment of the morphology of the sub-membrane pillars of cochlear outer hair cells.

Materials and methods. Guinea pig cochleae were fixed and prepared for electron microscopy using protocols described previously. Sections were imaged on an electron microscope equipped with a goniometer. The specimens were tilted through a range of 120°, and an image was acquired at each tilt angle. Filtered back-projection was used to generate three-dimensional reconstructions.

Results. Twelve individual pillars were successfully reconstructed. Pillars often connect to the cell membrane through a thin segment, and to the cytoskeleton through a forking structure that may form a central cavity.

Place, publisher, year, edition, pages
Informa Healthcare, 2009. Vol. 129, no 9, 940-945 p.
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URN: urn:nbn:se:liu:diva-101063DOI: 10.1080/00016480802552519PubMedID: 19023683OAI: diva2:665154
Available from: 2013-11-19 Created: 2013-11-19 Last updated: 2013-12-17Bibliographically approved

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Fridberger, Anders
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