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Immunocytochemical demonstration of the equilibrative nucleoside transporter rENT1 in rat sinoatrial node


, : Immunocytochemical demonstration of the equilibrative nucleoside transporter rENT1 in rat sinoatrial node. Journal of Histochemistry and Cytochemistry 50(3): 305-309

Adenosine exerts multiple receptor-mediated effects in the heart, including a negative chronotropic effect on the sinoatrial node. The aim of this study was to investigate the distribution of the equilibrative nucleoside transporter rENT1 in rat sinoatrial node and atrial muscle. Immunocytochemistry and/or immunoblotting revealed abundant expression of this protein in plasma membranes of sinoatrial node and in atrial and ventricular cells. Because rENT1-mediated transport is likely to regulate the local concentrations of adenosine in the sinoatrial node and other parts of the heart, it represents a potential pharmacological target that might be exploited to ameliorate ischemic damage during heart surgery.

US$19.90

PMID: 11850433

DOI: 10.1177/002215540205000302


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