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[Comparative assessment of the properties of a factor inhibiting macrophage migration and interferon]
Abstract:
The authors investigated some functional properties of interferon and the macrophages migration inhibitory factor (MIF) obtained by stimulation of human tonsil lymphocytes with the virus of Newcastle disease (NDV) or O-streptolysin. Both the interferon and MIF inhibited actively the migration of human tonsil cells, but differed by the anti-viral activity, and sensitivity to heating at 56 degrees C for 30 min. Stimulation of human tonsil lymphocytes with NDV leads to production of a more wide range of delayed hypersensitivity mediators than stimulation with O-streptolysin.
Insights
Interferon and macrophage migration inhibitory factor (MIF) from human lymphocytes inhibit cell migration. NDV stimulation produced more mediators than O-streptolysin, showing distinct functional properties.
Area of Science:
- Immunology
- Virology
- Cell Biology
Background:
- Interferon and Macrophage Migration Inhibitory Factor (MIF) are key immune mediators.
- Human tonsil lymphocytes can be stimulated to produce these factors.
Purpose of the Study:
- To investigate and compare the functional properties of interferon and MIF.
- To analyze the mediators produced by human tonsil lymphocytes stimulated with Newcastle disease virus (NDV) or O-streptolysin.
Main Methods:
- Human tonsil lymphocytes were stimulated with NDV or O-streptolysin.
- Functional properties, including anti-viral activity and heat sensitivity, were assessed.
- Migration inhibition assays were performed.
Main Results:
- Both interferon and MIF significantly inhibited human tonsil cell migration.
- Interferon and MIF exhibited different anti-viral activities and heat sensitivities (56°C for 30 min).
- NDV stimulation yielded a broader spectrum of delayed hypersensitivity mediators compared to O-streptolysin.
Conclusions:
- Interferon and MIF possess distinct functional characteristics.
- NDV is a more potent stimulator for producing a wider array of immune mediators than O-streptolysin.