Role of beta interferon in resistance to Toxoplasma gondii infection

M. A. Orellana, Y. Suzuki, F. Araujo, J. S. Remington

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

The role of recombinant murine beta interferon (rMuIFN-β) and recombinant human IFN-β (rHuIFN-β) in resistance to Toxoplasma gondii was examined. rMuIFN-β protected mice against a lethal infection with the parasite. The protective effect appeared to depend on the concomitant release of gamma interferon. rMuIFN-β did not activate murine peritoneal macrophages to inhibit or kill T. gondii whether used alone or in combination with lipopolysaccharide (LPS). rHuIFN-β did not activate human monocyte-derived macrophages to inhibit or kill T. gondii when 5-day-old monocyte-derived macrophages were used. In contrast, significant killing of T. gondii was noted when 10-day-old monocyte-derived macrophages were used. The addition of LPS enhanced this effect. These results revealed a role for IFN-β in the mechanisms of defense against T. gondii and suggest its potential use in the treatment of toxoplasmosis in humans.

Original languageEnglish
Pages (from-to)3287-3290
Number of pages4
JournalInfection and Immunity
Volume59
Issue number9
StatePublished - 1991

Funding

FundersFunder number
National Institute of Allergy and Infectious DiseasesU01AI030230

    ASJC Scopus subject areas

    • Parasitology
    • Microbiology
    • Immunology
    • Infectious Diseases

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