Immunoglobulin E and Eosinophil-Dependent Protective Immunity to Larval Onchocerca volvulus in Mice Immunized with Irradiated Larvae

David Abraham, Ofra Leon, Silvia Schnyder-Candrian, Chun Chi Wang, Ann Marie Galioto, Laura A. Kerepesi, James J. Lee, Sara Lustigman

Research output: Contribution to journalArticle

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Abstract

Mice immunized with irradiated Onchocerca volvulus third-stage larvae developed protective immunity. Eosinophil levels were elevated in the parasite microenvironment at the time of larval killing, and measurements of total serum antibody levels revealed an increase in the immunoglobulin E (IgE) level in immunized mice. The goal of the present study was to identify the role of granulocytes and antibodies in the protective immune response to the larval stages of O. volvulus in mice immunized with irradiated larvae. Immunity did not develop in mice if granulocytes, including both neutrophils and eosinophils, were eliminated, nor did it develop if only eosinophils were eliminated. Moreover, larvae were killed in naïve interleukin-5 transgenic mice, and the killing coincided with an increase in the number of eosinophils and the eosinophil peroxidase (EPO) level in the animals. To determine if EPO was required for protective immunity, mice that were genetically deficient in EPO were immunized, and there were no differences in the rates of parasite recovery in EPO-deficient mice and wild-type mice. Two mouse strains were used to study B-cell function; μMT mice lacked all mature B cells, and Xid mice had deficiencies in the B-1 cell population. Immunity did not develop in the μMT mice but did develop in the Xid mice. Finally, protective immunity was abolished in mice treated to eliminate IgE from the blood. We therefore concluded that IgE and eosinophils are required for adaptive protective immunity to larval O. volvulus in mice.

Original languageEnglish (US)
Pages (from-to)810-817
Number of pages8
JournalInfection and Immunity
Volume72
Issue number2
DOIs
StatePublished - Feb 2004

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Onchocerca volvulus
Eosinophils
Immunoglobulin E
Larva
Immunity
Eosinophil Peroxidase
Granulocytes
Parasites
B-Lymphocytes
Antibodies
Interleukin-5
Adaptive Immunity

ASJC Scopus subject areas

  • Immunology

Cite this

Abraham, D., Leon, O., Schnyder-Candrian, S., Wang, C. C., Galioto, A. M., Kerepesi, L. A., ... Lustigman, S. (2004). Immunoglobulin E and Eosinophil-Dependent Protective Immunity to Larval Onchocerca volvulus in Mice Immunized with Irradiated Larvae. Infection and Immunity, 72(2), 810-817. https://doi.org/10.1128/IAI.72.2.810-817.2004

Immunoglobulin E and Eosinophil-Dependent Protective Immunity to Larval Onchocerca volvulus in Mice Immunized with Irradiated Larvae. / Abraham, David; Leon, Ofra; Schnyder-Candrian, Silvia; Wang, Chun Chi; Galioto, Ann Marie; Kerepesi, Laura A.; Lee, James J.; Lustigman, Sara.

In: Infection and Immunity, Vol. 72, No. 2, 02.2004, p. 810-817.

Research output: Contribution to journalArticle

Abraham, D, Leon, O, Schnyder-Candrian, S, Wang, CC, Galioto, AM, Kerepesi, LA, Lee, JJ & Lustigman, S 2004, 'Immunoglobulin E and Eosinophil-Dependent Protective Immunity to Larval Onchocerca volvulus in Mice Immunized with Irradiated Larvae', Infection and Immunity, vol. 72, no. 2, pp. 810-817. https://doi.org/10.1128/IAI.72.2.810-817.2004
Abraham, David ; Leon, Ofra ; Schnyder-Candrian, Silvia ; Wang, Chun Chi ; Galioto, Ann Marie ; Kerepesi, Laura A. ; Lee, James J. ; Lustigman, Sara. / Immunoglobulin E and Eosinophil-Dependent Protective Immunity to Larval Onchocerca volvulus in Mice Immunized with Irradiated Larvae. In: Infection and Immunity. 2004 ; Vol. 72, No. 2. pp. 810-817.
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