title: The Noncompetitive AMPAR Antagonist Perampanel Abrogates Brain Endothelial Cell Permeability in Response to Ischemia: Involvement of Claudin-5.
abstract: The blood-brain barrier (BBB) is formed by brain endothelial cells, and decreased BBB integrity contributes to vasogenic cerebral edema and increased mortality after stroke. In the present study, we investigated the protective effect of perampanel, an orally active noncompetitive AMPA receptor antagonist, on BBB permeability in an in vitro ischemia model in murine brain endothelial cells (mBECs). The results showed that perampanel significantly attenuated oxygen glucose deprivation (OGD)-induced loss of cell viability, release of lactate dehydrogenase, and apoptotic cell death in a dose-dependent manner. Perampanel treatment did not alter the expression and surface distribution of various glutamate receptors. Furthermore, the results of calcium imaging showed that perampanel had no effect on OGD-induced increase in intracellular Ca(2+) concentrations. Treatment with perampanel markedly reduced the paracellular permeability of mBECs after OGD in different time points, as measured by transepithelial electrical resistance assay. In addition, the expression of claudin-5 at protein level, but not at mRNA level, was increased by perampanel treatment after OGD. Knockdown of claudin-5 partially prevented perampanel-induced protection in cell viability and BBB integrity in OGD-injured mBECs. These data show that the noncompetitive AMPA receptor antagonist perampanel affords protection against ischemic stroke through caludin-5 mediated regulation of BBB permeability.
authors: Department of Neurology, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China.
authors: Jian-Meng
authors: JM
authors: Lv
authors: Department of Neurology, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China.
authors: Xiao-Min
authors: XM
authors: Guo
authors: Department of Neurosurgery, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China.
authors: Bo
authors: B
authors: Chen
authors: Department of Neurology, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China.
authors: Qi
authors: Q
authors: Lei
authors: Department of Neurology, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China.
authors: Ya-Juan
authors: YJ
authors: Pan
authors: Department of Neurology, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China. yangqian_syy@126.com.
authors: Qian
authors: Q
authors: Yang
mesh_terms: D000818:Animals; D001812:Blood-Brain Barrier / Q000187:drug effects; D001921:Brain / Q000378:metabolism; D001929:Brain Edema / Q000378:metabolism; D002463:Cell Membrane Permeability; D002478:Cells, Cultured; D062507:Claudin-5 / Q000378:metabolism*; D042783:Endothelial Cells / Q000187:drug effects* / Q000378:metabolism; D005947:Glucose / Q000378:metabolism; D007511:Ischemia / Q000378:metabolism*; D008810:Mice, Inbred C57BL; D009570:Nitriles; D010100:Oxygen / Q000378:metabolism; D011728:Pyridones / Q000494:pharmacology*; D018091:Receptors, AMPA / Q000037:antagonists & inhibitors*; D020521:Stroke / Q000378:metabolism
chemical_list: D062507:Claudin-5; C491511:Cldn5 protein, mouse; D009570:Nitriles; D011728:Pyridones; D018091:Receptors, AMPA; C551441:perampanel; D005947:Glucose; D010100:Oxygen
keywords: AMPA receptor; Blood brain barrier; Claudin-5; Perampanel