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[Effect of histamine and diprazin on the course of experimental amyloidosis in mice]
Abstract:
In experiment on 33 mice, line C57Bl, the effect of changed vascular-tissue permeability following administration of histamine and anti-histamine preparation diprazin (pipolphen) on the development of amyloidosis was studied. It was shown that histamine stimulated the development of amyloidosis in mice, causing besides generalized vascular disorders and a pronounced mast-cell reaction with degranulation of these cells, whereas diprazin, on the contrary, inhibited amyloidogenesis in mice. Differences between experimental and control groups were identified using the morphometric method and were confirmed statistically. The difference in the degree of amyloidosis revealed against the background of administration of histamine and diprazin testified to a certain extent to the role of impaired vascular-tissue permeability in the pathogenesis of amyloidosis.
Insights
Histamine promotes amyloidosis development in mice by affecting vascular permeability, while the antihistamine diprazine inhibits it. This suggests impaired vascular integrity plays a role in amyloidosis pathogenesis.
Area of Science:
- Pharmacology
- Pathology
- Immunology
Background:
- Amyloidosis is a group of diseases characterized by the deposition of amyloid protein aggregates in various organs.
- Vascular-tissue permeability is crucial in regulating the transport of substances between blood and tissues.
- Histamine is a known mediator of inflammation and vascular permeability.
Purpose of the Study:
- To investigate the effect of histamine and diprazine on amyloidosis development in mice.
- To explore the role of altered vascular-tissue permeability in the pathogenesis of amyloidosis.
Main Methods:
- Experiments were conducted on 33 C57Bl mice.
- Mice were administered histamine and diprazine (an antihistamine).
- Morphometric methods and statistical analysis were used to assess amyloidosis development and vascular changes.
Main Results:
- Histamine administration stimulated amyloidosis development, causing vascular disorders and mast-cell degranulation.
- Diprazine inhibited amyloidogenesis in mice.
- Statistically significant differences were observed between experimental and control groups.
Conclusions:
- Histamine promotes amyloidosis, likely by increasing vascular-tissue permeability.
- Diprazine exhibits inhibitory effects on amyloidogenesis.
- Impaired vascular-tissue permeability is implicated in the pathogenesis of amyloidosis.