The voltage-gated proton channel Hv1 enhances brain damage from ischemic stroke.
The voltage-gated proton channel Hv1 enhances brain damage from ischemic stroke.
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DOI:
10.1038/nn.3059
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发表时间:
2012-03-04
影响因子:
25
通讯作者:
中科院分区:
文献类型:
--
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Phagocytic cell NADPH oxidase (NOX) generates reactive oxygen species (ROS) as part of innate immunity. Unfortunately, ischemia can also induce this pathway and inflict damage on native cells. Here we show that NOX–mediated damage can be inhibited by suppression of the voltage-gated proton channel, Hv1. Hv1 is required for full NOX activity since it compensates for loss of NOX–exported charge. We show that Hv1 is required for NOX–dependent ROS generation in brain microglia in situ and in vivo. Mouse and human brain microglia, but not neurons or astrocytes, express large Hv1-mediated currents. Mice lacking Hv1 were protected from NOX–mediated neuronal death and brain damage 24 hours after stroke. These results demonstrate that Hv1–dependent ROS production is responsible for a significant fraction of brain damage at early time points after ischemic stroke and provide a rationale for Hv1 as a therapeutic target for the treatment of ischemic stroke.
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DOI:
10.1073/pnas.0902761106
发表时间:
2009-05-05
影响因子:
11.1
作者:
Ramsey, I. Scott;Ruchti, Evelyne;Clapham, David E.
通讯作者:
Clapham, David E.
影响因子:
30.5
作者:
通讯作者:
--
影响因子:
8.3
作者:
Gelderblom, Mathias;Leypoldt, Frank;Magnus, Tim
通讯作者:
Magnus, Tim
影响因子:
5.5
作者:
Kraft, R;Grimm, C;Harteneck, C
通讯作者:
Harteneck, C
DOI:
10.1085/jgp.200910379
发表时间:
2010-07
期刊:
The Journal of general physiology
影响因子:
--
作者:
Iovannisci D;Illek B;Fischer H
通讯作者:
Fischer H