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Acid phosphatase activity in the chick's inner ear
1Department of Biological Sciences, Florida Institute of Technology, Melbourne, USA.
Acta Oto-Laryngologica
|July 1, 1996
Summary
Acid phosphatase (AP) activity in chick inner ear hair cells and sensory cells was mapped using azo-coupling. LR White embedding and paraformaldehyde fixation enhanced AP detection for detailed cellular localization.
Area of Science:
- Oto-neurology
- Cellular Biology
- Biochemistry
Background:
- Acid phosphatase (AP) plays a role in cellular processes.
- Understanding AP distribution is crucial for inner ear development and function.
Purpose of the Study:
- To investigate the cellular localization and distribution of AP in the inner ear of newly hatched chicks.
- To compare the efficacy of different embedding and fixation methods for AP detection.
Main Methods:
- Azo-coupling method for AP detection in plastic sections.
- Utilized JB-4 Plus and LR White embedding resins.
- Compared fixation with 2.5% paraformaldehyde and 2.5% glutaraldehyde.
Main Results:
- Intense AP activity was observed in supranuclear regions of basilar papilla hair cells and vestibular sensory hair cells.
- Marked AP activity was noted in crista ampullaris epithelia and dark cells.
- LR White embedding and paraformaldehyde fixation yielded more intense AP activity compared to JB-4 Plus and glutaraldehyde fixation, respectively.
Conclusions:
- The study successfully mapped AP distribution in various chick inner ear cells.
- LR White embedding and paraformaldehyde fixation are superior methods for demonstrating AP activity in these tissues.
- Findings provide insights into the role of AP in inner ear cellular physiology.