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Activation and Measurement of NLRP3 Inflammasome Activity Using IL-1β in Human Monocyte-derived Dendritic Cells
Published on: May 22, 2014
Hypothesis: Febrile infection-related epilepsy syndrome is a microglial NLRP3 inflammasome/IL-1 axis-driven
Wei-Sheng Lin1,2, Ting-Rong Hsu1,2
1Department of Pediatrics Taipei Veterans General Hospital Taipei Taiwan.
Abstract:
FIRES (febrile infection-related epilepsy syndrome) is a protracted neuroinflammatory condition of obscure cause. It mainly afflicts school-age children and often leads to permanent neurological sequelae. Most treatments to date have been of limited efficacy, while ketogenic diet and anti-interleukin-1 therapy appear beneficial for some patients. Research into this clinical entity is hampered by its rarity and complexity. Nonetheless, accumulating evidence derived from basic investigations and clinical observations converges to implicate the autoinflammatory nature of this syndrome. A closer analysis of current literature suggests that microglia and the NLRP3 inflammasome might be the pivotal cellular and molecular players in FIRES pathogenesis, respectively. Through evidence synthesis, herein we formulate the working hypothesis of overactivation of microglial NLRP3 inflammasome/interleukin-1 axis as the driving event in FIRES by creating a proinflammatory and proconvulsive milieu. The reverberation between neuroinflammation and seizure forms a vicious cycle. The unique properties of microglia might also contribute to unopposed IL-1 signalling and incessant sterile neuroinflammation in this context. The potential therapeutic relevance of the proposed conceptual framework is discussed.
Insights
Febrile infection-related epilepsy syndrome (FIRES) involves chronic brain inflammation. Our hypothesis suggests overactive microglia and the NLRP3 inflammasome drive FIRES, creating a pro-seizure environment.
Area of Science:
- Neuroscience
- Immunology
- Pediatric Neurology
Background:
- Febrile infection-related epilepsy syndrome (FIRES) is a rare, severe neurological disorder in children, characterized by prolonged seizures and neuroinflammation.
- Current treatments for FIRES have limited efficacy, and its underlying cause remains largely unknown.
- Emerging evidence suggests an autoinflammatory basis for FIRES, necessitating further investigation into its pathogenesis.
Purpose of the Study:
- To propose a unifying hypothesis for FIRES pathogenesis.
- To identify key cellular and molecular players involved in FIRES.
- To explore potential therapeutic targets based on the proposed mechanism.
Main Methods:
- Systematic review and evidence synthesis of existing literature on FIRES.
- Analysis of basic research findings and clinical observations.
- Formulation of a working hypothesis based on converging evidence.
Main Results:
- Accumulating evidence implicates microglia as key cellular mediators and the NLRP3 inflammasome as a critical molecular component in FIRES.
- The hypothesis posits that overactivation of the microglial NLRP3 inflammasome/interleukin-1 axis drives FIRES by inducing a proinflammatory and proconvulsive state.
- A self-perpetuating cycle of neuroinflammation and seizures is proposed, potentially exacerbated by microglial properties.
Conclusions:
- The microglial NLRP3 inflammasome/interleukin-1 axis is hypothesized as the central driver of FIRES.
- Understanding this axis offers potential therapeutic avenues for FIRES.
- Further research is warranted to validate this hypothesis and explore targeted interventions.
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