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Purinergic and Pyriminergic Activation of the Endothelium in Regulation of Tissue Perfusion

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Book cover Extracellular ATP and Adenosine as Regulators of Endothelial Cell Function

Abstract

The nucleotides ATP, ADP, UTP and UDP acting on P2 receptors stimulate endothelium dependent dilatation mediated via nitric oxide, endothelium derived hyperpolarising factors, and prostacyclins (to a lesser extent). They are crucial for shear stress-mediated increases in blood flow and for the increase of tissue perfusion during exercise and hypoxia. The endothelium can also release potent contractile tetraphosphate nucleotides (AP4A and UP4A). The purinergic signaling has been implicated in blood pressure regulation, development of myocardial infarction, heart failure, pulmonary hypertension, circulatory shock and regulation of blood flow in most organs of the body. Purinergic and pyriminergic endothelium-mediated effects are important for physiological and patophysiological regulation of tissue perfusion.

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Erlinge, D. (2010). Purinergic and Pyriminergic Activation of the Endothelium in Regulation of Tissue Perfusion. In: Gerasimovskaya, E., Kaczmarek, E. (eds) Extracellular ATP and Adenosine as Regulators of Endothelial Cell Function. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-3435-9_1

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