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. 1993 Apr;61(4):1288–1292. doi: 10.1128/iai.61.4.1288-1292.1993

Schistosoma japonicum-infected mice show reduced hepatic fibrosis and eosinophilia and selective inhibition of interleukin-5 secretion by CD4+ cells after treatment with anti-interleukin-2 antibodies.

A W Cheever 1, Y Xu 1, A Sher 1, F D Finkelman 1, T M Cox 1, J G Macedonia 1
PMCID: PMC281360  PMID: 8095922

Abstract

Schistosoma japonicum-infected mice were injected with antibodies to interleukin-2 (IL-2) and/or IL-2 receptor to clarify the role of IL-2 on the granulomatous reaction around schistosome eggs in the liver. Granulomas were of normal or slightly increased size in animals subjected to IL-2 blockade, but hepatic fibrosis was markedly decreased in treated animals 10 weeks after infection. Anti-IL-2 treatment significantly decreased the in vitro secretion of IL-5 by antigen-stimulated spleen cells, and peripheral eosinophilia and tissue eosinophilia were diminished. Secretion of IL-2, IL-4, and gamma interferon was unaffected. Our results indicate that IL-2 is not an essential determinant of granuloma size in S. japonicum-infected mice but that, as in Schistosoma mansoni infection, the development of hepatic fibrosis is critically dependent on IL-2 levels and granuloma size and hepatic fibrosis are differentially regulated.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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