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- W2005161902 abstract "Microvascular hyperpermeability that occurs due to breakdown of the BBB is a major contributor of brain vasogenic edema, following IR injury. In microvascular endothelial cells, increased ROS formation leads to caspase-3 activation following IR injury. The specific mechanisms, by which ROS mediates microvascular hyperpermeability following IR, are not clearly known. We utilized an OGD-R in vitro model of IR injury to study this.RBMEC were subjected to OGD-R in presence of a caspase-3 inhibitor Z-DEVD, caspase-3 siRNA or an ROS inhibitor L-AA. Cytochrome c levels were measured by ELISA and caspase-3 activity was measured fluorometrically. TJ integrity and cytoskeletal assembly were studied using ZO-1 immunofluorescence and rhodamine phalloidin staining for f-actin, respectively.OGD-R significantly increased monolayer permeability, ROS formation, cytochrome c levels, and caspase-3 activity (p < 0.05) and induced TJ disruption and actin stress fiber formation. Z-DEVD, L-AA and caspase-3 siRNA significantly attenuated OGD-R-induced hyperpermeability (p < 0.05) while only L-AA decreased cytochrome c levels. Z-DEVD and L-AA protected TJ integrity and actin cytoskeletal assembly.These results suggest that OGD-R-induced hyperpermeability is ROS and caspase-3 dependent and can be regulated by their inhibitors." @default.
- W2005161902 created "2016-06-24" @default.
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- W2005161902 date "2014-02-01" @default.
- W2005161902 modified "2023-10-02" @default.
- W2005161902 title "Reactive Oxygen Species-Caspase-3 Relationship in Mediating Blood-Brain Barrier Endothelial Cell Hyperpermeability Following Oxygen-Glucose Deprivation and Reoxygenation" @default.
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- W2005161902 doi "https://doi.org/10.1111/micc.12110" @default.
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