Maresin1 alleviates neuroinflammation by inhibiting caspase-3/ GSDME-mediated pyroptosis in mice cerebral ischemia-reperfusion model.
J Stroke Cerebrovasc Dis
; 33(8): 107789, 2024 Aug.
Article
em En
| MEDLINE
| ID: mdl-38782167
ABSTRACT
OBJECTIVE:
To explore the mechanism of Maresin1 in reducing cerebral ischemia-reperfusion injury. MATERIALS ANDMETHODS:
Male C57BL/6 mice were randomly divided (n = 5 in each group), and focal middle cerebral artery occlusion (MCAO) model was used to simulate cerebral ischemia/reperfusion injury. TTC and the Longa score were used to detect the degree of neurological deficits. Western blot was used to detect the expression levels of GSDME, GSDME-N, caspase-3 and cleaved caspase-3 in cerebral ischemic penumbra tissue, and immunofluorescence was used to detect the expression levels of GSDME-N. The mRNA expression levels of GSDME and pro-inflammatory cytokines (IL-1ß, IL-6 and TNF-α) were detected by RT-PCR.RESULTS:
Compared with sham group, GSDME mRNA levels in MCAO group were significantly increased at 12 h and 24 h after reperfusion, and GSDME and GSDME-N significantly increased at 6-48 h after reperfusion. Compared with sham group, the percentage of infarct size, the Longa score, the mRNA expression levels of IL-1ß, IL-6 and TNF-α, and GSDME, GSDME-N, caspase-3 and cleaved caspase-3 in MCAO group was significantly increased. Then, the percentage of infarct size and the Longa score significantly decreased after MaR1 administration, the mRNA expression levels of IL-1ß and IL-6 downregulated, and GSDME, GSDME-N, caspase-3 and cleaved caspase-3 were also reduced. After administration of Z-DEVD-FMK(ZDF), the expression of caspase-3, cleaved caspase-3 and GSDME-N was decreased, which in MCAO+MaR1+ZDF group was not statistically significant compared with MCAO+ ZDF group.CONCLUSION:
Maresin1 alleviates cerebral ischemia/reperfusion injury by inhibiting pyroptosis mediated by caspase-3/GSDME pathway and alleviating neuroinflammation.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Traumatismo por Reperfusão
/
Transdução de Sinais
/
Ácidos Docosa-Hexaenoicos
/
Mediadores da Inflamação
/
Infarto da Artéria Cerebral Média
/
Modelos Animais de Doenças
/
Caspase 3
/
Piroptose
/
Camundongos Endogâmicos C57BL
Limite:
Animals
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article