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Helminth Infection Alters IgE Responses to Allergens Structurally Related to Parasite Proteins
Abstract
Immunological cross-reactivity between environmental allergens and helminth proteins has been demonstrated, although the clinically related implications of this cross-reactivity have not been addressed. To investigate the impact of molecular similarity among allergens and cross-reactive homologous helminth proteins in IgE-based serologic assessment of allergic disorders in a helminth-infected population, we performed ImmunoCAP tests in filarial-infected and noninfected individuals for IgE measurements to allergen extracts that contained proteins with high levels of homology with helminth proteins as well as IgE against representative recombinant allergens with and without helminth homologs. The impact of helminth infection on the levels and function of the IgE to these specific homologous and nonhomologous allergens was corroborated in an animal model. We found that having a tissue-invasive filarial infection increased the serological prevalence of ImmunoCAP-identified IgE directed against house dust mite and cockroach, but not against timothy grass, the latter with few allergens with homologs in helminth infection. IgE ELISA confirmed that filaria-infected individuals had higher IgE prevalences to those recombinant allergens that had homologs in helminths. Mice infected with the helminth Heligmosomoides polygyrus displayed increased levels of IgE and positive skin tests to allergens with homologs in the parasite. These results show that cross-reactivity among allergens and helminth proteins can have practical implications, altering serologic approaches to allergen testing and bringing a new perspective to the “hygiene hypothesis.”
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“Thus, persistent exposure to both endoparasites and ectoparasites may have played a crucial role in shaping and preserving IgE-mediated immune responses, mast cell activation, eosinophilic inflammation, and itch-associated protective behaviors, all of which are central to both parasite defense and allergic reactions (Farnell et al. 2015; Santiago et al. 2015; Sousa-Santos et al. 2020).”
From Parasites and allergies: a complex bidirectional relationship from evolutionary origins to modern therapeutics (2026) · cites this paper as Santiago et al. 2015
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“Conserved invertebrate proteins, including tropomyosin and related muscle proteins, may have become targets of IgE responses because of long-term exposure to arthropods and other metazoan parasites.”
From Parasites and allergies: a complex bidirectional relationship from evolutionary origins to modern therapeutics (2026) · cites this paper as Santiago et al. 2015
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Cited by
Sorted by citations
Reisacher, W. R. (2016) · International Forum of Allergy & Rhinology · doi:10.1002/alr.21709 · Cited by 8
Packi, K., Świerczewski, D., Klimczak, S., Ochab, D., Gałęziewska, J., Gromek, P., Kruczkowska, W., Płuciennik, E., Kałuzińska-Kołat, Ż., & Kołat, D. (2026) · Antonie van Leeuwenhoek · doi:10.1007/s10482-026-02425-4
Metadata
- Authors
- Santiago, H. D. C., Ribeiro-Gomes, F. L., Bennuru, S., & Nutman, T. B.
- Venue
- The Journal of Immunology
- Publisher
- Oxford University Press (OUP)
- Published
- 2014-01-01
- Volume
- 194
- Issue
- 1
- Pages
- 93-100
- ISSN
- 0022-1767
- 1550-6606
- PMC
- PMC4272869
- Cited by
- 28
- References
- 0
- Language
- en
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