Gabapentin Alleviates Brain Injury in Intracerebral Hemorrhage Through Suppressing Neuroinflammation and Apoptosis

Overview

Journal Neurochem Res

Specialties Chemistry
Neurology

Date 2022 Jul 9

PMID 35809188

Authors

Xiaopeng Li

Bingqian Wang

Ning Yu

Liang Yang

Chengrui Nan

Zhimin Sun

Lisi Guo

Zongmao Zhao

Affiliations

Soon will be listed here.

Abstract

Neuroinflammation plays an important role in brain tissue injury during intracerebral hemorrhage. Gabapentin can reduce inflammation and oxidative stress through inhibiting nuclear factor κB (NFκB) signals. Here, we showed that gabapentin reduced brain tissue injury in ICH through suppressing NFκB-mediated neuroinflammation. ICH was induced by injecting collagenase IV into the right striatum of Sprague-Dawley rats. PC12 and BV2 cells injury induced by Hemin were used to simulate ICH in vitro. Inflammation and apoptosis were assessed in rat brain tissue and in vitro cells. The neurobehavioral scores were significantly decreased in ICH rats compared with sham rats. Phosphorylated IκB-α and cleaved caspase3, and apoptosis rate were significantly higher in tissue surrounding the hematoma than in brain tissues from rats subjected to sham surgery. Furthermore, serum IL-6 levels in ICH rats were higher than in sham rats. Gabapentin treatment significantly improved the behavioral scores, decreased levels of phosphorylated IκB-α and cleaved caspase3, apoptosis rate, and serum IL-6 level in ICH rats. Hemin-treated BV2 cells displayed higher levels of phosphorylated IκB-α, cleaved caspase3, and IL-6 in the supernatant compared with vehicle-treated cells. Hemin treatment induced a significantly lower level of peroxisome proliferator-activated receptor γ (PPARγ) in BV2 cells. BV2-PC12 co-culture cells treated by hemin displayed higher levels of cleaved caspase3 in PC12 cells. Furthermore, gabapentin treatment could reduce these effects induced by hemin and the protective effects of gabapentin were significantly attenuated by PPARγ inhibitor. Therefore, gabapentin may reduce inflammation and apoptosis induced by the ICH through PPARγ-NFκB pathway.

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