Regulatory T Cell Induction during Plasmodium chabaudi Infection Modifies the Clinical Course of Experimental Autoimmune Encephalomyelitis
2011

How Malaria Infection Affects Autoimmune Disease

Sample size: 5 publication Evidence: moderate

Author Information

Author(s): Farias Alessandro S., Talaisys Rafael L., Blanco Yara C., Lopes Stefanie C. P., Longhini Ana Leda F., Pradella Fernando Santos, Leonilda M. B. Costa, Fabio T. M. Costa

Primary Institution: Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil

Hypothesis

Does malaria infection influence the clinical course of experimental autoimmune encephalomyelitis (EAE) through regulatory T cells?

Conclusion

Malaria infection induces regulatory T cells that can suppress the clinical symptoms of EAE.

Supporting Evidence

  • Infection with Plasmodium chabaudi reduced clinical symptoms of EAE in mice.
  • Increased levels of IL-10 and TGF-β1 were observed in malaria-infected mice.
  • Regulatory T cells were found to be elevated in the spleen of infected mice.

Takeaway

When mice with a type of autoimmune disease got infected with malaria, their symptoms got better because of special immune cells that help calm down the body's response.

Methodology

Mice were infected with Plasmodium chabaudi and then induced with EAE to observe the effects on clinical symptoms and immune responses.

Limitations

The effects of malaria-induced regulatory T cells were temporary and did not create long-lasting immunity.

Participant Demographics

C57BL/6 mice, 6-8 weeks old.

Statistical Information

P-Value

p<0.01

Statistical Significance

p<0.01

Digital Object Identifier (DOI)

10.1371/journal.pone.0017849

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