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Erschienen in: Journal of the Association for Research in Otolaryngology 4/2018

23.04.2018 | Research Article

Mechanism Underlying the Effects of Estrogen Deficiency on Otoconia

verfasst von: Liping Yang, Yinfang Xu, Yan Zhang, Sarath Vijayakumar, Sherri M. Jones, Yunxia (Yesha) Wang Lundberg

Erschienen in: Journal of the Association for Research in Otolaryngology | Ausgabe 4/2018

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Abstract

Otoconia-related vertigo and balance deficits, particularly benign paroxysmal positional vertigo (BPPV), are common. Our recent studies in humans show that, while BPPV prevalence greatly increases with age in both genders, peri-menopausal women are especially susceptible. In the present study, we show that bilateral ovariectomized (OVX) mice have significant balance behavioral deficits, and that estrogen deficiency compromises otoconia maintenance and anchoring by reducing the expression of otoconial component and anchoring proteins. There is ectopic debris formation in the ampulla under estrogen deficiency due to aberrant matrix protein expression. Furthermore, phytoestrogen is effective in rescuing the otoconia abnormalities. By comparing the expression levels of known estrogen receptor (Esr) subtypes, and by examining the otoconia phenotypes of null mice for selected receptors, we postulate that Esr2 may be critical in mediating the effects of estrogen in otoconia maintenance.
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Metadaten
Titel
Mechanism Underlying the Effects of Estrogen Deficiency on Otoconia
verfasst von
Liping Yang
Yinfang Xu
Yan Zhang
Sarath Vijayakumar
Sherri M. Jones
Yunxia (Yesha) Wang Lundberg
Publikationsdatum
23.04.2018
Verlag
Springer US
Erschienen in
Journal of the Association for Research in Otolaryngology / Ausgabe 4/2018
Print ISSN: 1525-3961
Elektronische ISSN: 1438-7573
DOI
https://doi.org/10.1007/s10162-018-0666-8

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