Levetiracetam Reduces Early Inflammatory Response After Experimental Intracerebral Hemorrhage by Regulating the Janus Kinase 2 (JAK2)-Signal Transducer and Activator of Transcription 3 (STAT3) Signaling Pathway.

Abstract:

:BACKGROUND Levetiracetam (LEV) is an antiepileptic drug that promotes recovery of neurological function by alleviating inflammatory reactions. However, it is not known whether it can improve secondary brain injury after intracerebral hemorrhage (ICH). The aim of this study was to determine whether LEV can reduce early inflammatory response after ICH in rats. MATERIAL AND METHODS An in vitro model of early inflammation was created by treating microglia cells with lipopolysaccharide (LPS). After exposure to various concentrations of LEV, the expression levels of NF-kappaB and STAT3 and inflammatory factors such as interleukin (IL)-1ß and tumor necrosis factor (TNF)-alpha in microglia were detected. In vivo, autologous blood was used to induce the rat ICH model. The effects of LEV on post-cerebral hemorrhagic inflammatory response were examined using neurobehavioral tests, FJC staining, brain water content testing, and analysis of protein expression levels of NF-kappaB, JAK2, STAT3, and inflammatory factors. RESULTS LEV treatment significantly reduced the expression of inflammatory factors and protein expression levels of NF-kappaB and STAT3 in LPS-treated microglia cells (P<0.05). In male Sprague-Dawley (SD) rats, LEV treatment markedly decreased the volume of hematoma and the number of degenerative neurons (P<0.05). It also improved the neurological function and relieved brain edema. The protein expression levels of NF-kappaB, JAK2, and STAT3 were significantly lower in the ICH+LEV group than in the control group (P<0.05). CONCLUSIONS Our study suggests that treatment with LEV alleviates early inflammatory responses induced by ICH. Mechanistically, LEV inhibited the JAK2-STAT3 signaling pathway and reduced neuronal injury around the hematoma, and ameliorated brain edema, all of which promoted recovery of nerve function after hemorrhage.

journal_name

Med Sci Monit

authors

Xiong J,Zhou H,Lu D,Wang Z,Liu H,Sun Y,Xu J,Feng Y,Xing A

doi

10.12659/MSM.922741

subject

Has Abstract

pub_date

2020-04-14 00:00:00

pages

e922741

eissn

1234-1010

issn

1643-3750

pii

922741

journal_volume

26

pub_type

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