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Observation of the morphology and calcium content of vestibular otoconia in rats after simulated weightlessness
- Source :
- Acta Oto-Laryngologica. 125:1039-1042
- Publication Year :
- 2005
- Publisher :
- Informa UK Limited, 2005.
-
Abstract
- Reduction in bone formation may have been the main reason for the lower calcium content of the otoconia after simulated weightlessness in rats. The head-ward distribution of blood volume may explain the morphological changes observed in the middle and inner ears. To observe morphological changes in the vestibular organs and measure the calcium content of otoconia in rats after simulated weightlessness. We used a tail suspension model of simulated weightlessness and then investigated changes in the vestibular organs using scanning electron microscopy and X-ray microanalysis. In comparison to untreated rats, the vestibular otoconia of the rats subjected to simulated weightlessness were small, irregularly shaped or fissured, and were arranged loosely and out of order. In addition, the calcium content of the otoconia was markedly decreased.
- Subjects :
- chemistry.chemical_element
Otolithic membrane
Calcium
Article
Otolithic Membrane
Utricle
otorhinolaryngologic diseases
medicine
Animals
Rats, Wistar
Saccule and Utricle
Otolith
Vestibular system
Weightlessness
General Medicine
Anatomy
Hindlimb Suspension
medicine.disease
Stapes
Rats
Motion sickness
medicine.anatomical_structure
Otorhinolaryngology
chemistry
Microscopy, Electron, Scanning
sense organs
Electron Probe Microanalysis
Subjects
Details
- ISSN :
- 16512251 and 00016489
- Volume :
- 125
- Database :
- OpenAIRE
- Journal :
- Acta Oto-Laryngologica
- Accession number :
- edsair.doi.dedup.....24ab004807e29d6d2b44e431f2a0e580