Ca2+ Influx Through Voltage- and Purinoceptor-Operated Channels Estimated from [Ca2+]C Signals (Myocytes from Guinea-Pig Urinary Bladder)
The rise in free cytosolic calcium was studied by a combination of the techniques of microspectrofluorometry and whole-cell patch clamp. By comparing the membrane currents with their effect on [Ca2+]c, the relative importance of Ca2+ influx could be quantified for both L-type Ca2+ channels and non-selective channels activated by extracellular ATP.
KeywordsSuccinic Acid Membrane Current Sustained Level Bath Application Free Cytosolic Calcium
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