ArticleParasitology research2023
Role of FcγRIII in the nasal cavity of BALB/c mice in the primary amebic meningoencephalitis protection model.
Article in Parasitology research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 4 citations in OpenAlex.
- Neuroinvasive Free-Living Amoebae Pathogenesis, Neuroinflammation and Therapeutic Challenges.International journal of molecular sciences · 2026Review
- Analysis of the Short- and Long-Term Immune Response in BALB/c Mice Immunized with TotalTropical medicine and infectious disease · 2026Article
- Therapeutic glycan-specific antibody binding mediates protection during primary amoebic meningoencephalitis.Infection and immunity · 2024Article
- Immunogens in Balamuthia mandrillaris: a proteomic exploration.Parasitology research · 2024Article
- Identification of the Linear Fc-Binding Site on the Bovine IgG1 Fc Receptor (boFcγRIII) Using Synthetic Peptides.Veterinary sciences · 2024Article
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
Abstract
Different mechanisms of the host immune response against the primary amebic meningoencephalitis (PAM) in the mouse protection model have been described. It has been proposed that antibodies opsonize Naegleria fowleri trophozoites; subsequently, the polymorphonuclear cells (PMNs) surround the trophozoites to avoid the infection. FcγRs activate signaling pathways of adapter proteins such as Syk and Hck on PMNs to promote different effector cell functions which are induced by the Fc portion of the antibody-antigen complexes. In this work, we analyzed the activation of PMNs, epithelial cells, and nasal passage cells via the expression of Syk and Hck genes. Our results showed an increment of the FcγRIII and IgG subclasses in the nasal cavity from immunized mice as well as Syk and Hck expression was increased, whereas in the in vitro assay, we observed that when the trophozoites of N. fowleri were opsonized with IgG anti-N. fowleri and interacted with PMN, the expression of Syk and Hck was also increased. We suggest that PMNs are activated via their FcγRIII, which leads to the elimination of the trophozoites in vitro, while in the nasal cavity, the adhesion and consequently infection are avoided.
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