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Related Experiment Videos

Babesia divergens in splenectomised rats.

R S Phillips

    Research in Veterinary Science
    |March 1, 1984
    PubMed
    Summary

    Babesia divergens adapted to rats through serial passage, achieving high parasitemia. Recovered rats developed immunity, with resistance transferable to offspring and serum recipients.

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    Area of Science:

    • Veterinary Parasitology
    • Infectious Diseases
    • Immunology

    Background:

    • Babesia divergens is an important tick-borne protozoan parasite.
    • Understanding its adaptation and host-parasite interactions is crucial for disease control.

    Purpose of the Study:

    • To adapt Babesia divergens to a rat model.
    • To investigate the course of infection and host immune response in adapted rats.

    Main Methods:

    • Serial passage of Babesia divergens through gerbils and then splenectomized rats.
    • Monitoring parasitemia levels over multiple passages.
    • Assessing infection severity in irradiated rats.
    • Detecting anti-B. divergens antibodies and evaluating passive immunity.

    Main Results:

    • Babesia divergens was successfully adapted to splenectomized rats, with parasitemia reaching 60% by passage 28.
    • Rat-adapted B. divergens caused patent parasitemia lasting 7-8 days without recrudescence.
    • Irradiation exacerbated infection in splenectomized rats.
    • Recovered rats developed antibodies and resistance, transferable maternally or via serum.

    Conclusions:

    • Babesia divergens can be adapted to rats, providing a model for studying babesiosis.
    • Acquired immunity in rats confers resistance to B. divergens infection.
    • Passive transfer of immunity is feasible, suggesting potential therapeutic strategies.

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