Publications by authors named "Marco Antonio Ataide"

Earlier studies indicate that either the canonical or non-canonical pathways of inflammasome activation have a limited role on malaria pathogenesis. Here, we report that caspase-8 is a central mediator of systemic inflammation, septic shock in the Plasmodium chabaudi-infected mice and the P. berghei-induced experimental cerebral malaria (ECM).

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Charcot-Leyden crystals (CLCs) are Galectin-10 protein crystals that can form after eosinophils degranulate. CLCs can appear and persist in tissues from patients with eosinophilic disorders, such as asthma, allergic reactions, and fungal and helminthic infections. Despite abundant reports of their occurrence in human disease, the inflammatory potential of CLCs has remained unknown.

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Recombinant influenza viruses are promising viral platforms to be used as antigen delivery vectors. To this aim, one of the most promising approaches consists of generating recombinant viruses harboring partially truncated neuraminidase (NA) segments. To date, all studies have pointed to safety and usefulness of this viral platform.

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Article Synopsis
  • Excessive proinflammatory cytokine release from innate immune cells plays a critical role in malaria's harmful effects, linked to the activation of Toll-like receptors (TLRs) during infection.
  • E6446, a synthetic TLR antagonist, effectively inhibits TLR9 activation in both human and mouse models, and also targets TLR8 at higher doses.
  • In studies of experimental cerebral malaria, E6446 not only reduced harmful cytokine responses but also prevented severe symptoms like limb paralysis and brain complications, highlighting its potential as a therapeutic strategy against malaria-induced inflammation.
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Malaria-induced sepsis is associated with an intense proinflammatory cytokinemia for which the underlying mechanisms are poorly understood. It has been demonstrated that experimental infection of humans with Plasmodium falciparum primes Toll-like receptor (TLR)-mediated proinflammatory responses. Nevertheless, the relevance of this phenomenon during natural infection and, more importantly, the mechanisms by which malaria mediates TLR hyperresponsiveness are unclear.

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