Bradykinin stimulates increased intracellular calcium in papillary collecting tubules of the rabbit

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Abstract

The effect of bradykinin on cytoplasmic Ca2+ concentration in rabbit papillary collecting tubule cells was determined using the fluorescent indicator Quin 2. Bradykinin stimulated a rapid increase in intracellular Ca2+. The rise in Ca2+ was dose dependent, persisted for less than 90 seconds and was independent of extracellular calcium. The ED50 for bradykinin induced changes in [Ca2+]i paralleled that observed previously for hormone-induced PGE2 formation as well as for inositol trisphosphate labelling. These studies provide additional support for the role of Ca2+ as a second messenger for bradykinin in renal papillary collecting tubule cells.

Original languageEnglish
Pages (from-to)299-304
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume134
Issue number1
DOIs
StatePublished - Jan 14 1986

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