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J Immunol. 1992 May 15;148(10):3244-8.

Treatment with anti-IL-2 antibodies reduces hepatic pathology and eosinophilia in Schistosoma mansoni-infected mice while selectively inhibiting T cell IL-5 production.

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  • 1Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.


Granulomas around Schistosoma mansoni eggs are a principal cause of morbidity in mice infected with this helminth. In vivo treatment of infected mice with anti-IL-2 antibodies, with or without anti-IL-2 receptor antibodies, significantly diminished the size of circumoval granulomas in the liver and decreased hepatic fibrosis to half that in untreated mice. Antibody-treated animals also displayed a marked reduction in both peripheral blood and tissue eosinophilia while IgE levels were unchanged or increased. Spleen cell cytokine production in response to Ag or mitogen stimulation was selectively altered by in vivo anti-IL-2 administration. IL-5 responses were dramatically reduced, whereas IL-4, IL-2, and IFN-gamma responses were not consistently changed. These findings confirm previous observations, suggesting a role for IL-2 in egg-induced pathology but indicate that the primary function of this cytokine in schistosome-infected mice may be in the generation of Th2- rather than Th1-associated responses.

[PubMed - indexed for MEDLINE]
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