Pb2(+)-induced secretion from bovine chromaffin cells: fura-2 as a probe for Pb2+.

Abstract

The effect of Pb2+ on catecholamine release was studied in isolated intact and permeabilized bovine chromaffin cells. Fura-2 was used to monitor intracellular Pb2+. A characterization of Pb2(+)-fura-2 interactions in solutions simulating intracellular ionic composition showed that Pb2+ forms a 1:1 Pb2(+)-fura-2 complex (apparent dissociation constant = 4.2… (More)

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