Experimental Disseminated Strongyloidiasis in Erythrocebus patas

II. Immunology

Robert M. Genta Laboratory of Parasitic Diseases, Institute of Allergy and Infectious Diseases

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James S. Harper III Infectious Diseases Branch, IRP, The National Institute of Neurological and Communicative Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20205

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Albert A. Gam Laboratory of Parasitic Diseases, Institute of Allergy and Infectious Diseases

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William I. London Infectious Diseases Branch, IRP, The National Institute of Neurological and Communicative Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20205

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Franklin A. Neva Laboratory of Parasitic Diseases, Institute of Allergy and Infectious Diseases

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DOI:
https://doi.org/10.4269/ajtmh.1984.33.444
Volume/Issue:
Volume 33: Issue 3
Page(s):
444–450
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Parasite-specific humoral and cellular immune responses were evaluated in seven Erythrocebus patas monkeys experimentally infected with a Southeast Asian strain of Strongyloides stercoralis. Most animals developed high titers of anti-larval surface IgG antibody (as evaluated by the indirect immunofluorescence test), and all animals tested developed specific IgE antibody (as shown by the in vitro histamine release test). Modest lymphoproliferative responses to S. stercoralis antigens were demonstrated in most animals during the early phase of the infection (days 20–40), but disappeared later. Steroid treatment (prednisone, 12.5 mg/kg on alternate days) was given to three animals, but did not appear to significantly affect the immune parameters tested. The degree of the immune responses to S. stercoralis larval antigens did not correlate well with the course of the infection, and several animals died of disseminated disease in spite of demonstrable humoral and cellular responses to these antigens. We suggest therefore that other factors, such as local intestinal immune and nonimmune mechanisms may be of importance in protection against disseminated strongyloidiasis.

Author Notes

Present address: University of Cincinnati Medical Center, Department of Pathology, 231 Bethesda Avenue, Cincinnati, Ohio 45267.

Copyright:
Copyright © 1984 by The American Society of Tropical Medicine and Hygiene 1984
Accepted:
05 Dec 1983
|
Published Online:
May 1984
Cover The American Journal of Tropical Medicine and Hygiene
The American Journal of Tropical Medicine and Hygiene
Print ISSN:
0002-9637
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