Modulation of bradykinin (BK)-induced intracellular Ca2+ oscillations was investigated with single cell Ca2+ analysis in v-Ki-ras-transformed NIH3T3 fibroblasts. The Ca2+ oscillations were inhibited by the addition of a specific antagonist for subtype 2 of BK receptors (B2 receptor), not the antagonist for B1 receptor. Decrease of the extracellular Ca2+ concentration suppressed the [Ca2+](i) oscillations and application of thapsigargin dissipated the [Ca2+](i) oscillations. These findings suggest that the continuous activation of B2 receptor leading to the fluctuations of both Ca2+ influx which refills the internal Ca2+ stores, and Ca2+ mobilization from the internal stores, is essential to the occurrence of the [Ca2+](i) oscillations in these cells.
|Original language||English (US)|
|Number of pages||5|
|Journal||Acta Pharmacologica Sinica|
|State||Published - Jan 1 1994|
ASJC Scopus subject areas
- Pharmacology (medical)