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The granulocyte factor abrogates the alloantigen-induced delayed type hypersensitivity suppression in mice
H Tchórzewski1, E Kocur, Z Wojtkowiak
1Department of Pathophysiology, Institute of Basic Medical Sciences, Lódź.
Folia Biologica
|January 1, 1988
Summary
Granulocyte factor (GF) secreted by adherent granulocytes inhibits suppressor cell generation in mice. This immune modulation impacts delayed type hypersensitivity reactions without affecting migration inhibitory factor production.
Area of Science:
- Immunology
- Cell Biology
Background:
- Adherent granulocytes release granulocyte factor (GF) within 60 minutes.
- GF has a role in immune regulation.
Purpose of the Study:
- To investigate the effect of GF on suppressor cell generation.
- To determine GF's impact on delayed type hypersensitivity (DTH) reactions.
- To assess GF's influence on migration inhibitory factor (MIF) production.
Main Methods:
- Induction of suppressor cells in mice via intravenous injection of irradiated allogeneic lymphoid cells.
- Measurement of DTH reactions using the mouse foodpad test.
- Evaluation of MIF production following antigen or phytohaemagglutinin stimulation.
Main Results:
- GF effectively abolished the generation of suppressor cells induced by allogeneic lymphoid cells.
- GF treatment did not alter DTH reactions mediated by induced suppressors.
- Neither suppressor cell induction nor GF treatment affected antigen- or phytohaemagglutinin-induced MIF production.
Conclusions:
- Granulocyte factor (GF) plays a significant role in suppressing immune responses by inhibiting suppressor cell generation.
- GF's mechanism of action in modulating DTH reactions warrants further investigation.
- GF does not interfere with MIF production, suggesting a specific role in immune regulation.