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Cited by 386

The DOI matches its Crossref record; 39 of the 39 references it cites were found in a registry or an index.

NADPH Oxidase Plays a Central Role in Blood-Brain Barrier Damage in Experimental Stroke

Kahles, Timo, Luedike, Peter, Endres, Matthias, Galla, Hans-Joachim, Steinmetz, Helmuth, Busse, Rudi, Neumann-Haefelin, Tobias, Brandes, Ralf P.·2007·Stroke

Abstract

Background and Purpose— Cerebral ischemia/reperfusion is associated with reactive oxygen species (ROS) generation, and NADPH oxidases are important sources of ROS. We hypothesized that NADPH oxidases mediate blood-brain barrier (BBB) disruption and contribute to tissue damage in ischemia/reperfusion. Methods— Ischemia was induced by filament occlusion of the middle cerebral artery in mice for 2 hours followed by reperfusion. BBB permeability was measured by Evans blue extravasation. Monolayer permeability was determined from transendothelial electrical resistance of cultured porcine brain capillary endothelial cells. Results— BBB permeability was increased in the ischemic hemisphere 1 hour after reperfusion. In NADPH oxidase–knockout (gp91phox −/− ) mice, middle cerebral artery occlusion–induced BBB disruption and lesion volume were largely attenuated compared with those in wild-type mice. Inhibition of NADPH oxidase by apocynin prevented BBB damage. In porcine brain capillary endothelial cells, hypoxia/reoxygenation induced translocation of the NADPH oxidase activator Rac-1 to the membrane. In vivo inhibition of Rac-1 by the 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitor atorvastatin or Clostridium difficile lethal toxin B also prevented the ischemia/reperfusion–induced BBB disruption. Stimulation of porcine brain capillary endothelial cells with H 2 O 2 increased permeability, an effect attenuated by inhibition of phosphatidyl inositol 3-kinase or c -Jun N -terminal kinase but not blockade of extracellular signal–regulated kinase-1/2 or p38 mitogen-activated protein kinase. Inhibition of Rho kinase completely prevented the ROS-induced increase in permeability and the ROS-induced polymerization of the actin cytoskeleton. Conclusions— Activation of Rac and subsequently of the gp91phox containing NADPH oxidase promotes cerebral ROS formation, which then leads to Rho kinase–mediated endothelial cell contraction and disruption of the BBB. Inhibition of NAPDH oxidase is a promising approach to reduce brain injury after stroke.

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Crossref · 10.1161/strokeaha.107.489765

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Metadata

Authors
Kahles, T., Luedike, P., Endres, M., Galla, H.-J., Steinmetz, H., Busse, R., Neumann-Haefelin, T., & Brandes, R. P.
Venue
Stroke
Published
2007-11
Volume
38
Issue
11
Pages
3000-3006
ISSN
  • 0039-2499 (ISSN-L)
  • 1524-4628
OpenAlex
W2121875633
Cited by
386
References
39
FWCI
13.85
Type
journal article
Language
en
Open access
closed

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