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Peripheral blood expression levels of inflammasome complex components in two different focal epilepsy syndromes.

Abstract：

BACKGROUND:Although the role of inflammation in epilepsy pathogenesis has been extensively investigated, the inflammasome complex, a key component of neuroinflammation, has been understudied in epilepsy patients. METHODS:To better understand the involvement of this system in epilepsy, levels of inflammasome complex components (NLRP1, NLRP3, CASP1, ASC), end-products of inflammasome complex activity [IL-1β, IL-18, nitric oxide synthase (NOS) isoforms] and other inflammatory factors (NFκB, IL-6, TNF-α) were measured in peripheral blood of patients with focal epilepsy of unknown cause (FEoUC) (n = 47), mesial temporal lobe epilepsy with hippocampal sclerosis (MTLE-HS) (n = 35) and healthy controls using real time qPCR and/or ELISA. RESULTS:Inflammasome complex associated factors were either downregulated or unchanged in epilepsy patients. Likewise, flow cytometry studies failed to show an increase in ratios of NLRP3-expressing CD3+ and CD14+ peripheral blood mononuclear cells (PBMC) in epileptic patients. Anti-neuronal antibody positive epilepsy patients showed increased NLRP1 and neuronal NOS mRNA expression levels, whereas patients under poly-therapy showed reduced serum inflammasome levels. FEoUC patients demonstrated increased PBMC NFκB mRNA expression levels and serum IL-1β and IL-6 levels. Both MTLE-HS and FEoUC patients displayed higher ratios of NFκB-expressing CD14+ PBMC than healthy controls. CONCLUSIONS:Although previous clinical studies have implicated increased inflammasome complex expression levels in epilepsy, our results indicate suppressed inflammasome complex activity in the peripheral blood of focal epilepsy patients. Alternatively, the IL-6-NFκB signaling pathway, appears to be activated in focal epilepsy, suggesting that factors of this pathway might be targeted for future theranostic applications.

journal_name

J Neuroimmunol

journal_title

Journal of neuroimmunology

authors

Ulusoy C,Vanlı-Yavuz EN,Şanlı E,Timirci-Kahraman Ö,Yılmaz V,Bebek N,Küçükali Cİ,Baykan B,Tüzün E

doi

10.1016/j.jneuroim.2020.577343

subject

Has Abstract

pub_date

2020-10-15 00:00:00

pages

577343

eissn

0165-5728

issn

1872-8421

pii

S0165-5728(20)30210-1

journal_volume

347

pub_type

杂志文章

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