“… phosphatidylinositol 4,5-bisphosphate (PIP(2)) or phosphatidylinositol 3,4,… K(ATP) current activated by pinacidil and abolished the inhibitory effect of IGF-I. Thus, we show regulation of arterial K(ATP) channels … the first time that IGF-I inhibits these channels via a phosphoinositide 3-kinase-dependent pathway.”