[Adenosine triphosphate (ATP) and insulin secretion: effect of different concentrations and effect of temperature].
In the presence of a glucose concentration of 1.5 g/1, ATP provokes a biphasic stimulation of insulin secretion from the isolated and perfused rat pancreas. For ATP concentrations ranging from 0.5 mg/1 to 200 mg/1, the increase in insulin secretion presents a linear relation with the logarithm of the concentration. Lowering the temperature from 37.5 degrees C to 28 degrees C provokes a decrease in insulin secretion induced by glucose (1.5 g/1). In response to the stimulation by ATP, the increase in insulin secretion measured during the first phase is weaker at 28 degrees C than at 37.5 degrees C when estimated in ng/min; however, when evaluated in percentage in relation to the baseline value, this increase is more important at the lower temperature.
D000255:Adenosine Triphosphate / Q000494:pharmacology*; D000818:Animals; D004305:Dose-Response Relationship, Drug; D007328:Insulin / Q000378:metabolism*; D000078790:Insulin Secretion; D007515:Islets of Langerhans / Q000378:metabolism; D010477:Perfusion; D051381:Rats; D013696:Temperature
D007328:Insulin; D000255:Adenosine Triphosphate
Adénosine triphosphate (ATP) et insulino-sécrétion: effet de différentes concentrations et influence de la température.