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Eosinophils and helminth infection: protective or pathogenic?

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Abstract

Since the earliest descriptions of this enigmatic cell, eosinophils have been implicated in both protective and pathogenic immune responses to helminth infection. Nevertheless, despite substantial data from in vitro studies, human infections, and animal models, their precise role in helminth infection remains incompletely understood. This is due to a number of factors, including the heterogeneity of the many parasites included in the designation “helminth,” the complexity and redundancy in the host immune response to helminths, and the pleiotropic functions of eosinophils themselves. This review examines the consequences of helminth-associated eosinophilia in the context of protective immunity, pathogenesis, and immunoregulation.

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We thank Drs. James Hewitson and Stephen Davies for insightful comments on the manuscript.

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  1. Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, MD, USA

    E. Mitre

  2. Human Eosinophil Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA

    A. D. Klion

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Mitre, E., Klion, A.D. Eosinophils and helminth infection: protective or pathogenic?. Semin Immunopathol 43, 363–381 (2021). https://doi.org/10.1007/s00281-021-00870-z

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