| Literature DB >> 21088470 |
Hwan Goo Lee1, Sun Mi Won, Byoung Joo Gwag, Yong Beom Lee.
Abstract
The possibility that P2X₇ receptor (P2X₇R) expression in microglia would mediate neuronal damage via reactive oxygen species (ROS) production was examined in the APPswe/PS1dE9 mouse model of Alzheimer's disease (AD). P2X7R was predominantly expressed in CD11b-immunopositive microglia from 3 months of age before Abeta plaque formation. In addition, gp91phox, a catalytic subunit of NADPH oxidase, and ethidium fluorescence were detected in P2X₇R-positive microglial cells of animals at 6 months of age, indicating that P2X₇R-positive microglia could produce ROS. Postsynaptic density 95-positive dendrites showed significant damage in regions positive for P2X₇R in the cerebral cortex of 6 month-old mice. Taken together, up-regulation of P2X₇R activation and ROS production in microglia are parallel with Aβ increase and correlate with synaptotoxicity in AD.Entities:
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Year: 2011 PMID： 21088470 PMCID： PMC3041940 DOI： 10.3858/emm.2011.43.1.001
Source DB: PubMed Journal: Exp Mol Med ISSN： 1226-3613 Impact factor: 8.718