ArticleParasites, hosts and diseases2025
Strain-dependent immune responses reveal a critical role of IL-17A in defense against Balamuthia mandrillaris.
Article in Parasites, hosts and diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Balamuthia mandrillaris is a causative agent of granulomatous amebic encephalitis, a rare but often fatal condition. To investigate the role of T helper (Th) cell subsets in the immune response against B. mandrillaris, we examined 3 mouse strains with distinct immunological profiles: C57BL/6 (Th1-dominant), BALB/c (Th2-dominant), and ICR (balanced Th1/Th2). Mice were infected intranasally with 1×105 amoebae. Body weight and neurologic symtoms were monitored weekly, and cytokine expression was assessed biweekly over 6 weeks. Minimal weight loss and no mortality were observed in C57BL/6 mice, whereas BALB/c and ICR mice exhibited significant early and delayed mortality, respectively. Interleukin-17A expression was notably elevated in C57BL/6 mice compared with the other strains. These findings indicate that a robust Th17 response, particularly interleukin-17A production, is a critical component of the host defense against B. mandrillaris infection.
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