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THE RELATION OF THE RETICULO-ENDOTHELIAL SYSTEM TO THE FORMATION OF AMYLOID
1Department of Pathology, Peking Union Medical College, Peking, China.
The Journal of Experimental Medicine
|October 30, 2009
Summary
Reticulo-endothelial cells are actively involved in amyloid formation. Evidence suggests local amyloid development within these cells, particularly in the liver capillaries.
Area of Science:
- Pathology
- Cell Biology
Background:
- Amyloidosis is a group of diseases characterized by amyloid deposition.
- The cellular origin of amyloid has been a subject of investigation.
Purpose of the Study:
- To investigate the role of reticulo-endothelial cells in amyloid formation.
- To present evidence supporting the involvement of reticulo-endothelial cells in amyloidogenesis.
Main Methods:
- Observation of amyloid deposition in relation to reticulo-endothelial cell distribution.
- Histological analysis of early amyloid formation in localized areas.
- Utilizing India ink injections to identify and track reticulo-endothelial cells and their interaction with amyloid.
- Investigating the effects of reticulo-endothelial cell blockage on amyloid development.
Main Results:
- Amyloid deposits were observed in areas rich in reticulo-endothelial cells.
- Early amyloid formation appeared as small, localized patches, suggesting local synthesis.
- Amyloid was found within liver capillaries, consistent with cellular involvement.
- Phagocytized ink particles and amyloid showed co-localization within reticulo-endothelial cells.
- Reticulo-endothelial cells were absent in areas of active amyloid formation post-India ink injection.
- Blockage of reticulo-endothelial cells delayed amyloid appearance in experimental animals.
Conclusions:
- Reticulo-endothelial cells play an active role in the formation of amyloid.
- The findings support a model where amyloid originates from or is closely associated with reticulo-endothelial cell activity.
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