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Summary
Researchers observed novel fibrillar bodies in prostate tissue using electron microscopy, potentially linked to corpora amylacea formation. These bodies, distinct from amyloid fibrils, were not found in all prostate samples, suggesting a specific role.
Area of Science:
- Uropathology
- Cell Biology
- Electron Microscopy
Background:
- Corpora amylacea are prostatic concretions of unknown origin.
- Their formation process remains poorly understood, particularly the initial steps.
Purpose of the Study:
- To investigate the early stages of corpora amylacea formation using electron microscopy.
- To identify potential precursors or novel structures involved in their development.
Main Methods:
- Electron microscopy was employed on a hyperplastic prostate specimen rich in corpora amylacea.
- Semithin and ultrathin sections were examined, alongside paraffin-embedded and standard histological preparations.
- Comparison was made across multiple prostate specimens, including hyperplasias and cancers.
Main Results:
- Unreported small fibrillar bodies, distinct from amyloid fibrils, were observed.
- These bodies were surrounded by glycogen granules and found near acinar cells.
- The fibrillar bodies were detectable in semithin sections but absent in paraffin-embedded and other histological preparations.
Conclusions:
- Novel fibrillar bodies associated with glycogen granules were identified in hyperplastic prostate tissue.
- These structures exhibit unique fibril characteristics, differing from amyloid.
- Their role as precursors to corpora amylacea could not be definitively established in this study.