PMID- 38472651 OWN - NLM STAT- Publisher LR - 20240313 IS - 1559-1182 (Electronic) IS - 0893-7648 (Linking) DP - 2024 Mar 12 TI - Involvement of Calpain in Neurovascular Unit Damage through Up-regulating PARP-NF-kappaB Signaling during Experimental Ischemic Stroke. LID - 10.1007/s12035-024-04092-w [doi] AB - Calpain and PARP-NF-kappaB signaling are reported to participate in the ischemic brain injury. In this study, it was investigated whether calpain was contributed to the neurovascular unit (NVU) damage through up-regulating PARP-NF-kappaB signaling during experimental ischemic stroke. Male Sprague-Dawley rats were suffered from 90 min of middle cerebral artery occlusion, followed by reperfusion. The NVU damage was evaluated by the permeability of blood-brain barrier (BBB), the degradation of proteins in extracellular matrix and tight junctions, and ultrastructural changes. The inflammatory response was determined by the expression of inflammatory genes driven by PARP-NF-kappaB signaling and the activities of myeloperoxidase (MPO). Treatment with MDL 28,170, a calpain inhibitor, improved neurological functions, reduced TUNEL staining index, lessened brain swelling, and decreased infarct volume in ischemic rats. Moreover, it reduced the BBB permeability, enhanced the levels of laminin, collagen IV and occludin, and attenuated the ultrastructural damage of NVU in penumbra and core after induction of ischemia. Meanwhile, it enhanced the levels of cytosolic IkappaBalpha, lessened the levels of nuclear PARP and NF-kappaB p65, reduced the levels of ICAM-1, TNF-alpha, IL-1beta, MMP-9, and MMP-2,and suppressed the activities of MPO in penumbra and core. These data showed that calpain inhibition suppressed PARP-NF-kappaB signaling-mediated inflammatory response, reduced NVU damage, and protected brain against ischemic stroke, suggesting the involvement of calpain in the NVU damage through up-regulating PARP-NF-kappaB signaling during brain ischemia. CI - (c) 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. FAU - Yan, Wenhao AU - Yan W AD - Department of Pediatrics, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China. FAU - Wang, Chunyang AU - Wang C AD - Department of Neuropharmacology, Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China. FAU - Zhao, Yumei AU - Zhao Y AD - Department of Neuropharmacology, Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China. FAU - Jiang, Yingying AU - Jiang Y AD - Department of Neuropharmacology, Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China. FAU - Sun, Ming AU - Sun M AUID- ORCID: 0000-0001-5772-7305 AD - Department of Neuropharmacology, Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China. sunmingbni99@163.com. LA - eng GR - 81271285/Innovative Research Group Project of the National Natural Science Foundation of China/ PT - Journal Article DEP - 20240312 PL - United States TA - Mol Neurobiol JT - Molecular neurobiology JID - 8900963 SB - IM OTO - NOTNLM OT - Calpain OT - Experimental ischemic stroke OT - Inflammatory response OT - Neurovascular unit OT - Nuclear factor kappa B OT - Poly(ADP-ribose) polymerases EDAT- 2024/03/13 06:46 MHDA- 2024/03/13 06:46 CRDT- 2024/03/13 01:11 PHST- 2023/09/25 00:00 [received] PHST- 2024/03/03 00:00 [accepted] PHST- 2024/03/13 06:46 [medline] PHST- 2024/03/13 06:46 [pubmed] PHST- 2024/03/13 01:11 [entrez] AID - 10.1007/s12035-024-04092-w [pii] AID - 10.1007/s12035-024-04092-w [doi] PST - aheadofprint SO - Mol Neurobiol. 2024 Mar 12. doi: 10.1007/s12035-024-04092-w.