The role of the ATP-gated receptor, P2X(7), has been evaluated in the unilateral 6-OHDA rat model of Parkinson's disease using the P2X(7) competitive antagonist A-438079. Nigral P2X(7) immunoreactivity was mainly located in microglia but also in astroglia. A-438079 partially but significantly prevented the 6-OHDA-induced depletion of striatal DA stores. However, this was not associated with a reduction of DA cell loss. Blockade of P2X(7) receptors may represent a novel protective strategy for striatal DA terminals in Parkinson's disease and warrants further future investigation.
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| http://dx.doi.org/10.1007/s00702-010-0400-0 | DOI Listing |
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