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Curcumin Alleviates Cerebral Ischemia-reperfusion Injury by Inhibiting NLRP1-dependent Neuronal Pyroptosis

[ Vol. 18 , Issue. 2 ]

Author(s):

Lifa Huang*, Xu Li, Yajun Liu, Xiaolong Liang, Hui Ye, Chao Yang, Lin Hua and Xin Zhang*   Pages 189 - 196 ( 8 )

Abstract:


Background: Cerebral ischemia-reperfusion injury is caused by a blood reperfusion injury in the ischemic brain and usually occurs in the treatment stage of ischemic disease, which can aggravate brain tissue injury.

Objective: Curcumin was reported to exert a good therapeutic effect on neural cells against ischemia- reperfusion injury, However, the mechanism is not clear.

Methods: In this study, Oxygen-Glucose Deprivation (OGD) model of fetal rat cerebral cortical neurons and the Middle Cerebral Artery Occlusion (MCAO) model of rats were employed to mimic cerebral ischemia-reperfusion injury in vitro and in vivo, respectively.

Results: We confirmed that curcumin has a promotive effect on neuronal proliferation and an inhibitory effect on neuronal pyroptosis. Furthermore, we found that curcumin could improve cerebral infarction. The results of western blotting showed that curcumin down-regulated the expression of nucleotide-binding oligomerization domain-containing protein-, leucine-rich repeats-, and pyrin domain-containing protein 1 (NLRP1), cysteinyl aspartate-specific protease 1 (caspase-1), gasdermin D (GSDMD), IL-1β, IL-6, TNF-α, and iNOS proteins in OGD and MCAO models. NLRP1- dependent neuronal pyroptosis played an important role in cerebral ischemia-reperfusion injury.

Conclusion: Curcumin could effectively inhibit NLRP1-dependent neuronal pyroptosis by suppressing the p38 MAPK pathway and therefore exerted neuroprotective effects against cerebral ischemia- reperfusion injury.

Keywords:

Cerebral ischemia-reperfusion injury, curcumin, pyroptosis, NLRP1, blood reperfusion, brain.

Affiliation:

Department of Neurosurgery, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, Department of Neurosurgery, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, Department of Neurosurgery, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, Department of Neurosurgery, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, Department of Neurosurgery, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, Department of Neurosurgery, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, Department of Neurosurgery, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006



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