Development of specific immunoglobulin Ga (IgGa) and IgGb antibodies correlates with control of parasitemia in Babesia equi Infection.
- Journal Article
- Research Support
- Non-U.S. Gov't
- Research Support
- U.S. Gov't
- Non-P.H.S.
Summary
This research investigates the relationship between the development of specific antibodies and the control of parasitic infection in horses. It was observed that the presence of certain immunoglobulins corresponded with resolution of acute parasitemia associated with Babesia equi infection.
Introduction
The study focuses on understanding the changes in immunoglobulin G (IgG) types in horses during an infection by Babesia equi, a parasitic organism. The investigation is centered around two specific variants of IgG (IgGa and IgGb), and their emergence during the acute phase of the infection, and IgG(T) which made its appearance after the acute parasitemia was resolved.
Methodology
- The researchers studied the temporal characteristics of IgG isotype in horses infected with Babesia equi.
- Detailed attention was given to IgGa and IgGb antibodies during the acute phase and IgG(T) post the resolution of acute parasitemia.
- They also analyzed the IgG subtypes generated for equi merozoite antigen 1/saponin immunization, which mirrored the pattern seen during acute infection.
Results
- The study found that the development of IgGa and IgGb antibodies were prominent during the acute phase of Babesia equi infection in horses.
- Interestingly, the occurrence of IgG(T) was only seen post the resolution of acute parasitemia; thus, their appearance signals control over the infection.
- The same pattern of IgG isotype profile observed during acute infection was also produced by equi merozoite antigen 1/saponin immunization, suggesting the immunization can effectively mimic the natural immune response to infection.
Conclusion
The research concluded that the
development of IgGa and IgGb antibodies correlates with the onset of acute parasitemia in Babesia equi infection while the presence of IgG(T) indicates the resolution of acute parasitemia. The study also found the isotype profile generated by the equi merozoite antigen 1/saponin immunization to be identical to the one produced during the acute infection. These findings can pave the way for developing targeted therapeutic strategies for Babesia equi infections.
Cite This Article
Publication
Researcher Affiliations
- Washington State University, Department of Veterinary Microbiology and Pathology, Pullman, WA 99164-7040, USA. cwcunha@vetmed.wsu.edu
MeSH Terms
- Animals
- Antibodies, Protozoan / biosynthesis
- Babesia / immunology
- Babesiosis / immunology
- Babesiosis / parasitology
- Babesiosis / veterinary
- Enzyme-Linked Immunosorbent Assay
- Horse Diseases / immunology
- Horse Diseases / parasitology
- Horses
- Immunoglobulin G / biosynthesis
- Immunoglobulin G / classification
- Immunoglobulin Isotypes / biosynthesis
- Parasitemia / immunology
- Parasitemia / parasitology
- Parasitemia / veterinary
- Time Factors
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Citations
This article has been cited 6 times.- Sears KP, Knowles DP, Fry LM. Clinical Progression of Theileria haneyi in Splenectomized Horses Reveals Decreased Virulence Compared to Theileria equi.. Pathogens 2022 Feb 16;11(2).
- Nadal C, Marsot M, Le Metayer G, Boireau P, Guillot J, Bonnet SI. Spatial and Temporal Circulation of Babesia caballi and Theileria equi in France Based on Seven Years of Serological Data.. Pathogens 2022 Feb 9;11(2).
- Sears K, Knowles D, Dinkel K, Mshelia PW, Onzere C, Silva M, Fry L. Imidocarb Dipropionate Lacks Efficacy against Theileria haneyi and Fails to Consistently Clear Theileria equi in Horses Co-Infected with T. haneyi.. Pathogens 2020 Dec 10;9(12).
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