Title : Activation of P2X(7) receptors stimulates the expression of P2Y(2) receptor mRNA in astrocytes cultured from rat brain.

Pub. Date : 2007 Apr-Jun

PMID : 17624242






4 Functional Relationships(s)
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1 In the present study we report that the most potent P2X(7) receptor agonist BzATP stimulates the expression of the metabotropic ATP receptor P2Y(2) in cultured rat brain astrocytes. 3'-O-(4-benzoyl)benzoyladenosine 5'-triphosphate purinergic receptor P2Y2 Rattus norvegicus
2 Here we present evidence that P2Y(2) mRNA expression in cultured astrocytes peaks 6 h after BzATP exposure and returns to basal levels after 24 h. This effect was mimicked by high ATP concentrations (1 mM) and was abolished by P2X(7)-antagonists oATP and BBG. 3'-O-(4-benzoyl)benzoyladenosine 5'-triphosphate purinergic receptor P2Y2 Rattus norvegicus
3 The BzATP-evoked P2Y(2) receptor up-regulation in cultured astrocytes was coupled to an increased UTP-mediated intracellular calcium response. 3'-O-(4-benzoyl)benzoyladenosine 5'-triphosphate purinergic receptor P2Y2 Rattus norvegicus
4 Each inhibitor significantly reduced the extent to which BzATP induced P2Y(2) mRNA. 3'-O-(4-benzoyl)benzoyladenosine 5'-triphosphate purinergic receptor P2Y2 Rattus norvegicus