Endocrine Abstracts

It is generally accepted that hepatic responses to α-adrenergic agonists are dependent on the redistribution of intracellular and also extracellular Ca2+. Besides, phenylephrine induces significant K+ flux changes and plasma membrane hyperpolarisation. Earlier it was shown that K+ channel blockers as well as chelating of extracellular Ca2+ with EGTA could inhibit phenylephrine-induced metabolic responses and activation of mitoch...

Early events in activated by adrenaline (10−6 M) and phenylephrine (10−5M) single hepatocytes of rat have been investigated by quantitative image microfluorometry and microspectrofluorometry. Membrane potential-sensitive cationic DiOC2(3) and anionic SqSC4 probes have been used for image analysis and transmenbrane potential (Δψp) estimation in real-time studies. Fluorescence spectra resulting from the accumulati...