Functional Role of Proinflammatory and Anti-Inflammatory Cytokines in Seizures

  • Annamaria Vezzani
  • Daniela Moneta
  • Cristina Richichi
  • Carlo Perego
  • Maria G. De Simoni
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 548)

Abstract

Recent evidence has shown that proinflammatory and anti-inflammatory molecules are synthesized during epileptic activity in glial cells in CNS regions where seizures initiate d spread. These molecules are released and interact with specific receptors on neurons. Since various cytokines have been shown to affect neuronal excitability, this led to the hypothesis that they may have a role in altering synaptic transmission in epileptic conditions. Indeed, intracerebral application of IL-1β enhances epileptic activity in experimental models while its naturally occurring receptor antagonist (IL-1Ra) mediates anticonvulsant actions. Transgenic mice overexpressing IL-1Ra in astrocytes are less susceptible to seizures, indicating that endogenous IL-1 has proconvulsant activity. Several studies indicate a central role of IL-1β for the exacerbation of brain damage after ischemic, traumatic or excitotoxic insults, suggesting that it may also contribute to neuronal cell injury associated with seizures. Finally, a functional polymorphism in the IL-1β gene promoter, possibly associated with enhanced ability to produce this cytokine, has been specifically found in temporal lobe epilepsy patients with hippocampal sclerosis and in children with febrile seizures. Thus, the IL-1 system may represent a novel target for controlling seizure activity and/or the associated long-term sequelae. Furthermore, these studies suggest that other inflammatory and anti-inflammatory molecules produced in the CNS may have a role in the pathophysiology of seizure disorders.

Keywords

Temporal Lobe Epilepsy Kainic Acid Febrile Seizure Anticonvulsant Action Epileptic Activity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2004

Authors and Affiliations

  • Annamaria Vezzani
  • Daniela Moneta
  • Cristina Richichi
  • Carlo Perego
  • Maria G. De Simoni

There are no affiliations available

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