Microglial ROS production in an electrical rat post-status epilepticus model of epileptogenesis.

Abstract:

:Reactive oxygen species and inflammatory signaling have been identified as pivotal pathophysiological factors contributing to epileptogenesis. Considering the development of combined anti-inflammatory and antioxidant treatment strategies with antiepileptogenic potential, a characterization of the time course of microglial reactive oxygen species generation during epileptogenesis is of major interest. Thus, we isolated microglia cells and analyzed the generation of reactive oxygen species by flow cytometric analysis in an electrical rat post-status epilepticus model. Two days post status epilepticus, a large-sized cell cluster exhibited a pronounced response with excessive production of reactive oxygen species upon stimulation with phorbol-myristate-acetate. Neither in the latency phase nor in the chronic phase with spontaneous seizures a comparable cell population with induction of reactive oxygen species was identified. We were able to demonstrate in the electrical rat post-status-epilepticus model, that microglial ROS generation reaches a peak after the initial insult, is only marginally increased in the latency phase, and returns to control levels during the chronic epileptic phase. The data suggest that a combination of anti-inflammatory and radical scavenging approaches might only be beneficial during a short time window after an epileptogenic brain insult.

journal_name

Neurosci Lett

journal_title

Neuroscience letters

authors

Rettenbeck ML,von Rüden EL,Bienas S,Carlson R,Stein VM,Tipold A,Potschka H

doi

10.1016/j.neulet.2015.05.041

subject

Has Abstract

pub_date

2015-07-10 00:00:00

pages

146-51

eissn

0304-3940

issn

1872-7972

pii

S0304-3940(15)00398-5

journal_volume

599

pub_type

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