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[Cell-mediated immunity in experimental amoebic meningoencephalitis]
Abstract:
Cell-mediated and humoral immune reactions in mice infected with pathogenic Acanthamoeba culbertsoni were observed according to the period of time after amoebic infection by intranasal inoculation. The degrees of blastogenesis of spleen cells induced by mitogens, which were measured using radioactive [3H]-thymidine, were compared between infected and non-infected control groups. The mitogens used in this blastogenesis experiment were concanavalin A (Con A) and lipopolysaccharide(LPS). On the other hand, enzyme-linked immunosorbent assay(ELISA) was employed for the detection of humoral antibodies against A. culbertsoni. The levels of blastogenesis of splenocytes and serum titres in the experimental group showed increasing tendency a week after inoculation of A. culbertsoni, although there was no difference between the experimental and control groups in other periods of the experimental time.
Insights
Mice infected with Acanthamoeba culbertsoni showed increased spleen cell blastogenesis and antibody levels one week post-infection. This study observed cell-mediated and humoral immune responses to pathogenic amoebic infection.
Area of Science:
- Immunology
- Parasitology
- Microbiology
Context:
- Amoebic infections, particularly those caused by pathogenic Acanthamoeba species, pose significant health risks.
- Understanding the host immune response is crucial for developing effective treatments and preventative strategies.
Purpose:
- To investigate the cell-mediated and humoral immune responses in mice following intranasal inoculation with pathogenic Acanthamoeba culbertsoni.
- To quantify changes in spleen cell blastogenesis and serum antibody titers over time post-infection.
Summary:
- Mice infected intranasally with Acanthamoeba culbertsoni were monitored for immune reactions.
- Spleen cell blastogenesis, induced by concanavalin A (Con A) and lipopolysaccharide (LPS), and humoral antibody levels (detected by ELISA) were measured.
- A significant increase in blastogenesis and antibody titers was observed one week after infection, with no significant differences at other time points.
Impact:
- This research provides insights into the dynamics of the immune response to Acanthamoeba infection in a murine model.
- Findings may contribute to understanding host-pathogen interactions and inform future therapeutic interventions against amoebic keratitis and other Acanthamoeba-related diseases.