Related Experiment Video
Updated: Jul 12, 2026
10:38
High Yield Purification of Plasmodium falciparum Merozoites For Use in Opsonizing Antibody Assays
Published on: July 17, 2014
Immunoglobulin E synthesis in parasite infection.
The Journal of Allergy and Clinical Immunology
|October 11, 1976
Summary
Nippostrongylus brasiliensis infection in rats boosts immunoglobulin E (IgE) synthesis and primes T cells. This parasite infection creates favorable conditions for T cells supporting IgE antibody responses.
Area of Science:
- Immunology
- Parasitology
Background:
- Nippostrongylus brasiliensis (Nb) infection in rats enhances immunoglobulin E (IgE) synthesis.
- IgE-bearing lymphocytes and blast cells appear early in lymphoid tissues and bone marrow during infection.
Purpose of the Study:
- To investigate the role of T cells in the development of IgE-producing B cells during Nb infection.
- To understand how Nb infection influences T cell priming for IgE and IgG antibody responses.
Main Methods:
- Monitoring the appearance and proliferation of IgE-bearing lymphocytes and IgE-forming plasma cells in infected rats.
- Assessing T cell involvement using neonatally thymectomized rats.
- Evaluating the helper function of Nb-primed T cells in secondary antibody responses.
Main Results:
- T cells are not essential for IgE-B cell development but are involved in their differentiation into IgE-forming plasma cells.
- Nb infection primes parasite-specific T cells that collaborate with IgE-B cells for antibody production.
- T cells primed by parasite antigen in alum support IgG but not IgE responses, indicating a dissociation in helper function.
Conclusions:
- Nb infection creates a unique environment that favors T cell priming for IgE antibody production.
- Nonspecific proliferation and differentiation of IgE-B cells contribute to enhanced IgE antibody formation against unrelated antigens.
- Parasite infections can modulate the immune system to promote specific types of antibody responses.
