[Bis(5'-adenosyl)tetraphosphate--a partial agonist of the ATP receptors on sensory neurons of the rat].

Effect of bis(adenosyl-5')oligophosphates on the ATP receptors in the somatic membranes of rat sensory neurons has been studied. Bis(adenosyl-5')tetraphosphate and bis(adenosyl-5')pentaphosphate are partial agonists of these receptors. They can activate currents of about an order lower than maximum ATP-activated currents.