PAF Receptor Inhibition Attenuates Neuronal Pyroptosis in Cerebral Ischemia/Reperfusion Injury
| Autor: | Yunman Li, Bo Zhao, Jianping Zhu, Weirong Fang, Qiyang Yin, Yuxiang Fei |
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| Rok vydání: | 2021 |
| Předmět: |
Male
Inflammasomes Neuroscience (miscellaneous) Ischemia Inflammation Platelet Membrane Glycoproteins Pharmacology Neuroprotection Receptors G-Protein-Coupled Cellular and Molecular Neuroscience Lactones Mice medicine Pyroptosis Animals Receptor Neurons business.industry Inflammasome medicine.disease Disease Models Animal Ginkgolides Neuroprotective Agents Neurology Reperfusion Injury medicine.symptom Platelet-activating factor receptor business Reperfusion injury medicine.drug |
| Zdroj: | Molecular neurobiology. 58(12) |
| ISSN: | 1559-1182 |
| Popis: | Ischemic stroke is an inflammation-related disease, during which process activation of NLRP3 inflammasome and subsequent pyroptosis play crucial roles. Platelet-activating factor (PAF) is a potent phospholipid regulator of inflammation which exerts its effect via binding specific PAF receptor (PAFR). However, whether PAFR contributes to pyroptosis during ischemia/reperfusion (I/R) injury remains to be elucidated. To explore the underlying effect of PAFR on ischemic stroke from the perspective of pyroptosis, mice were subjected to middle cerebral artery occlusion/reperfusion (MCAO/R) injury and primary cultures of mice cerebral cortical neurons were exposed to oxygen-glucose deprivation/reoxygenation (OGD/R) injury to mimic I/R in vivo and in vitro, after which indexes associated with pyroptosis were analyzed. Intriguingly, our results indicated that inhibition of PAFR with its inhibitor XQ-1H or PAFR siRNA exerted a neuroprotective effect against I/R injury both in vivo and in vitro. Furthermore, inflammasome activation and pyroptosis after ischemic challenge were attenuated by XQ-1H or PAFR siRNA. Besides, the protection of XQ-1H was abolished by PAF stimulaiton to some extent. Moreover, XQ-1H or PAFR siRNA alleviated the neuronal pyroptosis induced by LPS and nigericin (an NLRP3 activator) in cortical neurons. Taken together, this study firstly demonstrates that PAFR is involved in neuronal pyroptosis after I/R injury, and XQ-1H, a specific PAFR inhibitor, has a promising prospect in attenuating I/R injury from the perspective of anti-pyroptosis. |
| Databáze: | OpenAIRE |
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